techniques and apparatus for multiplexing schemes for millimeter wave downlink single carrier wavefo

专利摘要:
certain aspects of the present disclosure pertain generally to wireless communication. more particularly, aspects of the present disclosure provide multiplexing schemes that may be suitable for single-carrier waveform. for example, some techniques and apparatus described herein allow multiplexing of multiple different data streams without destroying the single-carrier properties of the waveform. additionally or alternatively, some techniques and apparatus described herein may provide uneven error protection, uneven bandwidth allocation and/or the like as part of multiplexing schemes. examples of multiplexing schemes described herein include quadrature-phase/quadrature (i/q) multiplexing, overlapping quadrature amplitude modulation (qam) based at least in part on layered bit mapping, division multiplexing qam polarization with overlay coding and frequency division multiplexing using eu specific beams.
公开号:BR112020000563A2
申请号:R112020000563-0
申请日:2018-07-10
公开日:2020-07-21
发明作者:Jing Lei；Jing Sun；Tamer Kadous
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[0001] [0001] This application claims priority to Provisional Patent Application No. 62/531,799, filed on July 12, 2017, entitled "TECHNIQUES AND APPARATUSES
[0002] [0002] Aspects of the present disclosure relate generally to wireless communication, and more particularly to techniques and apparatus for multiplexing schemes for millimeter-wave downlink single carrier (SC) waveforms ( mm Wave).
[0003] [0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging and broadcasts. Typical wireless communication systems may employ multiple access technologies that are capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, division multiple access systems frequency division (OFDMA), single carrier frequency division multiple access (SC-FDMA) systems, code division time division multiple access (TD-SCDMA) and Long Term Evolution (LTE) systems . LTE/LTE Advanced is a suite of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Relationship Project (3 GPP).
[0004] [0004] A wireless communication network may include multiple base stations (BSs) that can support communication to multiple user equipment (UEs). A UE can communicate with a BS over the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail in this document, a BS may be called a Node B, a gNB, an access point (AP), a radio head, a receive and transmit point (TRP), a radio BS. new (NR), a 5G Node B and the like.
[0005] [0005] Multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at municipal, national, regional and even global levels. New radio (NR), which can also be called 5G, is a set of improvements to the LTE mobile standard enacted by the Third Generation Relationship Project (3GPP). NR is designed to support better mobile broadband Internet access by improving spectral efficiency, reducing costs, improving services, using new spectrum, and better integrating with other open standards using division multiplexing. orthogonal frequency frequency (OFDMA) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) using CP-OFDM and/or SC-FDM (e.g. also known as discrete transform spreading OFDM (DFT-s-OFDM) on the uplink (UL) as well as to support beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. Mobile broadband continues to increase, there is a need for improvements in NR and LTE technologies. Preferably, these improvements should be applicable to other multiple access technologies and other telecommunication standards that employ these technologies. technologies. SUMMARY
[0006] [0006] In some aspects, a method for wireless communication performed by a transmitting device may include receiving a first data stream and a second data stream; modulating the first data stream to create a first modulated data stream; modulating the second data stream to create a second modulated data stream; and multiplexing the first modulated data stream and the second modulated data stream into one symbol using in-phase and quadrature carriers.
[0007] [0007] In some aspects, a transmitting device for wireless communication may include a memory and one or more processors configured to receive a first data stream and a second data stream; modulating the first data stream to create a first modulated data stream; modulating the second data stream to create a second modulated data stream; and multiplexing the first modulated data stream and the second modulated data stream into one symbol using either in-phase or quadrature carriers.
[0008] [0008] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a transmitting device, may cause the one or more processors to receive a first stream of data and a second stream of data; modulate the first data stream to create a first modulated data stream; modulate the second data stream to create a second modulated data stream; and multiplexing the first modulated data stream and the second modulated data stream into one symbol using either in-phase or quadrature carriers.
[0009] [0009] In some aspects, an apparatus for wireless communication may include means for receiving the first data stream and a second data stream; means for modulating the first data stream to create a first modulated data stream; means for modulating the second data stream to create a second modulated data stream; and means for multiplexing the first modulated data stream and the second modulated data stream into one symbol using either in-phase or quadrature carriers.
[0010] [0010] In some aspects, a method for wireless communication performed by the receiving device may include receiving a signal that has a phased component and a quadrature component; identify at least one symbol pertinent to the recipient device (e.g. with at least in part an attached signature string specific to the recipient device), wherein the at least one symbol is identified from at least one of the component in phase or quadrature component; and demodulate the at least one symbol.
[0011] [0011] In some aspects, a target device for wireless communication may include a memory and one or more processors configured to receive one that has an in-phase component and a quadrature component; identifying at least one symbol pertinent to the target device, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and demodulate the at least one symbol.
[0012] [0012] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a target device, can cause the one or more processors to receive a signal that has an in-phase component and a quadrature component; identify at least one symbol pertinent to the target device, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and demodulate the at least one symbol.
[0013] [0013] In some aspects, an apparatus for wireless communication may include means for receiving a signal that has an in-phase component and a quadrature component; means for identifying at least one symbol pertinent to the apparatus, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and means for demodulating the at least one symbol.
[0014] [0014] In some aspects, a method for wireless communication may include receiving a plurality of data streams; mapping sets of data streams of the plurality of data streams to respective sets of bit layers of a plurality of bit layers, wherein each bit layer of the plurality of bit layers corresponds to a binary expansion value that is generated based at least in part on a quadrature amplitude modulation (QAM) constellation; and transmitting a signal including the plurality of bit layers.
[0015] [0015] In some aspects, a transmitting device for wireless communication may include a memory and one or more processors configured to receive a plurality of data streams; mapping sets of data streams of the plurality of data to respective sets of bit layers of a plurality of bit layers, wherein each bit layer of the plurality of bit layers corresponds to a binary expansion value that is generated based on at least in part in a QAM constellation; and transmitting a signal including the plurality of bit layers. In some respects, the signal may identify bit layer assignment to user devices or recipients.
[0016] [0016] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a recipient device, may cause the one or more processors to receive a plurality of data streams; map sets of data streams of the plurality of data streams to respective sets of bit layers of a plurality of bit layers, wherein each bit layer of the plurality of bit layers corresponds to a binary expansion value that is generated based at least in part on a QAM constellation; and transmit a signal including the plurality of bit layers.
[0017] [0017] In some aspects, an apparatus for wireless communication may include means for receiving a plurality of data streams; means for mapping sets of data streams of the plurality of data to respective sets of bit layers of a plurality of bit layers, wherein each bit layer of the plurality of bit layers corresponds to a binary expansion value that is generated based at least in part on a QAM constellation; and means for transmitting a signal including the plurality of bit layers.
[0018] [0018] In some aspects, a method for wireless communication performed by a recipient device may include receiving a signal including a plurality of bit layers, wherein the plurality of bit layers is generated based at least in part on a constellation of QAM; identifying at least one relevant bit layer of the plurality of bit layers that is relevant to the recipient device; and determining a data stream based at least in part on the at least one relevant layer of bits.
[0019] [0019] In some aspects, a recipient device for wireless communication may include receiving a signal including a plurality of bit layers, wherein the plurality of bit layers is generated based at least in part on a QAM constellation; identifying at least one relevant bit layer of the plurality of bit layers that is relevant to the recipient device; and determining a data stream based at least in part on the at least one relevant layer of bits.
[0020] [0020] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a recipient device, cause the one or more processors to receive a signal including a plurality of bit layers, wherein the plurality of bit layers are generated based on the least partly in a QAM constellation; identify at least one relevant bit layer of the plurality of bit layers that is relevant to the recipient device; and determine a data stream based at least in part on the at least one relevant bit layer.
[0021] [0021] In some aspects, an apparatus for wireless communication may include means for receiving a signal including a plurality of bit layers, wherein the plurality of bit layers are generated based at least in part on a QAM constellation; means for identifying at least one relevant bit layer of the plurality of bit layers which is relevant to the apparatus; and means for determining a data stream based at least in part on the at least one relevant layer of bits.
[0022] [0022] In some aspects, a method for wireless communication performed by a transmitting device may include performing a modulation technique with respect to at least two data streams to generate at least two modulated data streams corresponding to the at least two data streams. Dice; applying the respective polarization patterns to the at least two modulated data streams; and transmitting, as a multiplexed signal after the respective polarization patterns are applied, the at least two modulated data streams.
[0023] [0023] In some aspects, a transmitting device for wireless communication may include a memory and one or more processors configured to perform a modulation technique with respect to at least two data streams to generate at least two modulated data streams corresponding to the at least two data streams; applying the respective polarization patterns to the at least two modulated data streams; and transmitting, as a multiplexed signal after the respective polarization patterns are applied, the at least two modulated data streams.
[0024] [0024] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a transmitting device, cause the one or more processors to perform a modulation technique against at least two data streams to generate at least two corresponding modulated data streams at least two data streams; apply the respective polarization patterns to the at least two modulated data streams; and transmit, as a multiplexed signal after the respective polarization patterns are applied, the at least two modulated data streams.
[0025] [0025] In some aspects, an apparatus for wireless communication may include means for performing a modulation technique with respect to the at least two data streams to generate at least two modulated data streams corresponding to the at least two data streams; means for applying the respective polarization patterns to the at least two modulated data streams; and means for transmitting, as a multiplexed signal after the respective polarization patterns are applied, the at least two modulated data streams.
[0026] [0026] In some aspects, a method for wireless communication performed by a receiving device may include receiving a multiplexed signal including at least two modulated data streams associated with the respective polarization patterns, wherein the respective polarization patterns are applied with the use of the respective polarized antennas of a transmitting device; and obtaining data from a relevant data stream of the at least two modulated data streams, wherein at least one further data stream of the at least two modulated data streams is filtered based at least in part on the at least one of the at least one of the at least two modulated data streams. respective polarization patterns.
[0027] [0027] In some aspects, a recipient device for wireless communication may include a memory and one or more processors configured to receive a multiplexed signal including at least two modulated data streams associated with the respective polarization patterns, wherein the respective polarization are applied using the respective polarized antennas of a transmitting device; and obtaining data from a relevant data stream of the at least two modulated data streams, wherein at least one further data stream of the at least two modulated data streams is filtered based at least in part on the at least one of the at least one of the at least two modulated data streams. respective polarization patterns.
[0028] [0028] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a recipient device, may cause the one or more processors to receive a multiplexed signal including at least two modulated data streams associated with the respective polarization patterns, wherein the respective polarization patterns are applied using the respective polarized antennas of a transmitting device; and obtain data from a relevant data stream of the at least two modulated data streams, wherein at least one other data stream of the at least two modulated data streams is filtered based at least in part on the at least one of the at least one of the at least two modulated data streams. respective polarization patterns.
[0029] [0029] In some aspects, an apparatus for wireless communication may include means for receiving a multiplexed signal including at least two modulated data streams associated with the respective polarization patterns, wherein the respective polarization patterns are applied using the respective polarization patterns. polarized antennas of a transmitting device; and means for obtaining data from a relevant data stream of the at least two modulated data streams, wherein at least one further data stream of the at least two modulated data streams is filtered based at least in part on the at least one of the respective polarization patterns.
[0030] [0030] In some aspects, a wireless communication method performed by a transmitting device may include partitioning a bandwidth into multiple non-overlapping sub-bands; assign different subbands of the multiple non-overlapping subbands to different recipient devices; and forming a plurality of respective beams for different destination devices, wherein each beam of the plurality of respective beams occupies a respective subband of the different subbands assigned to the different destination devices.
[0031] [0031] In some aspects, a transmitting device for wireless communication may include a memory and one or more processors configured to partition a bandwidth into multiple non-overlapping sub-bands; assign different subbands of the multiple non-overlapping subbands to different recipient devices; and forms a plurality of respective beams for the different target devices, wherein each beam of the plurality of respective beams occupies a respective subband of the different subbands assigned to the different target devices.
[0032] [0032] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a transmitting device, may cause the one or more processors to partition a bandwidth into multiple non-overlapping subbands; assign different subbands of the multiple non-overlapping subbands to different recipient devices; and form a plurality of respective beams for the different target devices, wherein each beam of the plurality of respective beams occupies a respective subband of the different bands assigned to the different target devices.
[0033] [0033] In some aspects, an apparatus for wireless communication may include means for partitioning a bandwidth into multiple non-overlapping sub-bands; means for assigning subbands other than the multiple non-overlapping subbands to different recipient devices; and means for forming a plurality of respective beams for the different destination devices, wherein each beam of the plurality of respective beams occupies a respective subband of the different subbands assigned to the different destination devices.
[0034] [0034] In some respects, a method for wireless communication performed by a receiving device may include transmitting, to a transmitting device, information that identifies a bandwidth capacity of the receiving device, where the bandwidth capacity corresponds to a subband of a beam bandwidth of the transmitting device; and receiving a target device-specific beam from the transmitting device, wherein the target device-specific beam is specific to the target device and occupies the subband, wherein the target device-specific beam is one of a plurality of target device-specific beams. non-overlapping recipient device transmitted by the transmitting device in the beam bandwidth.
[0035] [0035] In some respects, a receiving device for wireless communication may include a memory and one or more processors configured to transmit, to a transmitting device, information that identifies a bandwidth capacity of the receiving device, where the capacity of bandwidth corresponds to a subband of a beam bandwidth of the transmitting device; and receiving a target device-specific beam from the transmitting device, wherein the target device-specific beam is specific to the target device and occupies the subband, wherein the target device-specific beam is one of a plurality of target device-specific beams. non-overlapping recipient device transmitted by the transmitting device in the beam bandwidth.
[0036] [0036] In some respects, a non-transient computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a receiving device, may cause the one or more processors to transmit, to a transmitting device, information that identifies a bandwidth capability of the receiving device, in which the bandwidth capability corresponds to a subband of a beam bandwidth of the transmitting device; and receive a target device-specific beam from the transmitting device, wherein the target device-specific beam is specific to the target device and occupies the subband, wherein the target device-specific beam is one of a plurality of target device-specific beams. non-overlapping recipient device transmitted by the transmitting device in the beam bandwidth.
[0037] [0037] In some aspects, a wireless device may include means for transmitting to a transmitting device information identifying a bandwidth capability of the device, where the bandwidth capability corresponds to a sub-band of a beam bandwidth of the transmitting device; and receiving an apparatus-specific beam from the transmitting device, wherein the apparatus-specific beam is apparatus-specific and occupies the subband, wherein the apparatus-specific beam is one of a plurality of transmitted non-overlapping apparatus-specific beams by the transmitting device in the beam bandwidth.
[0038] [0038] Aspects generally include a method, apparatus, system, computer program product, non-transient computer-readable medium, base station, user equipment, wireless communication device, transmitting device, recipient device, and processing system as described substantially herein with reference to and illustrated by the accompanying specification and drawings.
[0039] [0039] The above has described the features and advantages of the example technique quite broadly in accordance with this disclosure so that the detailed description which follows may be better understood. Additional features and benefits will be described later in this document. The design and specific examples disclosed may readily be used as a basis for modifying or designing other structures to accomplish the same purposes as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed in this document, their organization and their method of operation, together with the associated advantages will be better understood from the following description when considered in conjunction with the attached figures. Each of the figures is provided for the purpose of illustration and description and not as a definition of the limits of the claims. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] [0040] In order that the manner in which the resources recited above the present disclosure may be understood in detail, a more particular description, briefly summarized above, may be obtained by referring to the aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain typical aspects of this disclosure and, therefore, should not be considered as limiting its scope, as the description may admit of other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.
[0041] [0041] Figure 1 is a block diagram conceptually illustrating an exemplary wireless communication network in accordance with various aspects of the present disclosure.
[0042] [0042] Figure 2 shows a block diagram conceptually illustrating an example of a base station in communication with a user equipment (UE) in a wireless communication network in accordance with various aspects of the present disclosure.
[0043] [0043] Figure 3 is a block diagram conceptually illustrating an example of a frame structure in a wireless communication network in accordance with various aspects of the present disclosure.
[0044] [0044] Figure 4 is a block diagram conceptually illustrating two exemplary subframe formats with the normal cyclic prefix in accordance with various aspects of the present disclosure.
[0045] [0045] Figure 5 is a diagram illustrating an example of quadrature/phase multiplexing in accordance with various aspects of the present disclosure.
[0046] [0046] Figure 6 is a diagram illustrating an example of overlapping quadrature amplitude modulation (QAM) based at least in part on layered bit mapping in accordance with various aspects of the present disclosure.
[0047] [0047] Figure 7 is a diagram illustrating an example of polarization division multiplexing for wireless communications in accordance with various aspects of the present disclosure.
[0048] [0048] Figure 8 is a diagram illustrating an example of frequency division multiplexing (FDM) using UE-specific beamforming in accordance with various aspects of the present disclosure.
[0049] [0049] Figure 9 is a diagram illustrating an exemplary process performed, for example, by a base station in accordance with various aspects of the present disclosure.
[0050] [0050] Figure 10 is a diagram illustrating an exemplary process performed, for example, by a wireless communication device in accordance with various aspects of the present disclosure.
[0051] [0051] Figure 11 is a diagram illustrating an exemplary process performed, for example, by a base station in accordance with various aspects of the present disclosure.
[0052] [0052] Figure 12 is a diagram illustrating an exemplary process performed, for example, by a wireless communication device in accordance with various aspects of the present disclosure.
[0053] [0053] Figure 13 is a diagram illustrating an exemplary process performed, for example, by a base station in accordance with various aspects of the present disclosure.
[0054] [0054] Figure 14 is a diagram illustrating an exemplary process performed, for example, by a wireless communication device in accordance with various aspects of the present disclosure.
[0055] [0055] Figure 15 is a diagram illustrating an exemplary process performed, for example, by a base station in accordance with various aspects of the present disclosure.
[0056] [0056] Figure 16 is a diagram illustrating an exemplary process performed, for example, by a wireless communication device in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION
[0057] [0057] A transmitting device (eg, a base station or a UE) can generate signals to carry data to recipient devices (eg, other base stations or other UEs) using a multiplexing scheme. For example, the transmitting device may combine data streams for one or more receiving devices into a single data stream or signal using a multiplexing scheme. Examples of multiplexing schemes may include frequency division multiplexing (FDM) (e.g. where the system spectrum is partitioned into non-overlapping subbands allocated to different users), code division multiplexing (CDM) (e.g. , where orthogonal or near-orthogonal spreading codes are assigned to different users), time division multiplexing (TDM) (e.g., where different users are programmed to transmit on different time slots), and time division multiplexing space (SDM) (e.g. where spatially separated different antenna beams are formed for different users).
[0058] [0058] With the advent of 5G/NR, greater frequency bandwidths were allocated, especially for mm Wave transmission. Radio frequency (RF) constraint and propagation properties that are unique to mm Wave transmission can introduce new design challenges for cellular networks. One such design challenge is the use of a single carrier (SC) waveform. Compared to OFDM, an SC waveform has a lower peak-to-average power ratio (PAPR), which leads to benefits in power efficiency, improved link budget, and low-complexity design. However, traditional multiplexing schemes (e.g. TDM, CDM, FDM, SDM, etc.) may not be completely suitable for the SC waveform, and/or may not provide sufficient flexibility regarding uneven error protection, unequal bandwidth allocation and/or the like.
[0059] [0059] Some techniques and apparatus described in this document provide multiplexing schemes that may be suitable for the SC waveform. For example, some techniques and apparatus described herein allow multiplexing of multiple different data streams without destroying the single-carrier properties of the waveform. In addition or alternatively, some techniques and apparatus described herein may provide uneven error protection, uneven bandwidth allocation and/or the like as part of multiplexing schemes Examples of multiplexing schemes described herein include in-phase quadrature multiplexing Quadrature (I/Q), QAM overlay based at least in part on layered bit mapping, polarization division multiplexing of QAM with overlay encoding, and FDM using UE-specific beams as described in together with Figures 5, 6, 7 and 8 respectively. These multiplexing schemes can preserve the SC waveform while allowing for uneven error protection, uneven bandwidth allocation, and/or the like.
[0060] [0060] Various aspects of the disclosure are fully described hereinafter with reference to the accompanying drawings. However, this disclosure can be embodied in many different ways and should not be interpreted as limited to the specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure is thorough and complete, and fully contains the scope of disclosure for those skilled in the art. Based on the teachings herein, one of ordinary skill in the art will appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure herein, whether implemented independently or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects presented herein. Furthermore, the scope of the disclosure is intended to cover such apparatus or method which is practiced using another structure, functionality, or structure and functionality in addition to and different from the various aspects of the disclosure presented herein. It is to be understood that any aspect of the disclosure disclosed herein may be incorporated by one or more elements of a claim.
[0061] [0061] Various aspects of telecommunication systems will be presented with reference to various apparatus and techniques. These apparatus and techniques will be described in the following detailed description and illustrated in the attached drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software or combinations thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.
[0062] [0062] It should be noted that while the aspects can be described using terminology commonly associated with 3G and/or 4G wireless technologies, the aspects of the present disclosure can be applied to other generation-based communication systems such as 5G and later, including NR technologies.
[0063] [0063] Figure 1 is a diagram illustrating a network 100 in which aspects of the present disclosure may be practiced. Network 100 can be an LTE network or some other wireless network, such as a 5G or NR network. Wireless network 100 may include multiple BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with user equipment (UEs) and may also be called a base station, BS of NR, Node B, gNB, 5G NB, access point, receive and transmit point (TRP) and /or similar. Each BS can provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to a coverage area of a BS and/or a BS subsystem that serves that coverage area, depending on the context in which the term is used.
[0064] [0064] A BS can provide communication coverage for a macrocell, picocell, femtocell and/or other cell types. A macrocell can cover a relatively wide geographic area (eg, many kilometers in radius) and can allow unrestricted access by UEs with a service subscription. A picocell can cover a small geographic area and can allow unrestricted access by UEs with a service subscription. A femtocell covers a relatively small geographic area (eg, a household) and may allow restricted access by UEs that join the femtocell (eg, UEs in a closed subscriber group (CSG)). A BS for a macrocell can be called a BS macro. A BS for a femtocell may be called a femtocell or domestic BS. A BS for a femtocell may be called a femtocell or domestic BS. In the example shown in Figure 1, a BS 110a can be a macro BS for a macrocell 102a, a BS 110b can be a pico BS for a picocell 102b, and a BS 110c can be a femtocell for a femtocell 102c. A BS can support one cell or multiple cells (eg three). The terms "eNB", "base station", "BS of NR", "gNB", "TRP", "AP", "B node", "5G NB" and "cell" may be used interchangeably in the present document.
[0065] [0065] In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS. In some examples, BSs may be interconnected with each other and/or with one or more other BSs or network nodes (not shown) on wireless network 100 through various types of backhaul interfaces, such as a direct physical connection, a virtual or similar with the use of any transport network
[0066] [0066] Wireless network 100 may also include relay stations. A relay station is an entity that can receive a data transmission from an upstream station (e.g. a BS or a UE) and sends a data transmission to a downstream station (e.g. a UE or a BS). A relay station can also be a UE that can relay transmissions to other UEs. In the example shown in Figure 1, a relay station 110d may communicate with the macro BS 110a and with the UE 120d in order to facilitate communication between the BS 110a and the UE 120d. A relay station may be called a relay BS, relay base station, relay, etc.
[0067] [0067] Wireless network 100 can be a heterogeneous network that includes BSs of different types, e.g. macro BS, pico BS, femto BS, relay BSs, etc. These different types of BSs can have different transmit power levels, different coverage areas, and different impact on interference on the wireless network 100. For example, macro BSs can have a high transmit power level (for example, 5 to 40 W) while pico eNBs, femto eNBs and relay BSs may have lower transmit power levels (eg 0.1 to 2 W).
[0068] [0068] A network controller 130 can couple to a set of BSs and can provide coordination and control for those BSs. The network controller 130 may communicate with the BSs via a loopback. The BSs can also communicate with each other, for example directly or indirectly via a wireless or wired loopback.
[0069] [0069] The BS 110 may include a signaling manager 140. In some respects, the signaling manager 140 may perform operations related to the signaling of the BS 110 (eg, modulation, multiplexing, etc.). For example, signaling manager 140 may receive a first data stream and a second data stream; can modulate the first data stream to create a first modulated data stream; can modulate the second data stream to create a second modulated data stream; and can multiplex the first modulated data stream and the second modulated data stream into one symbol using both in-phase and quadrature carriers.
[0070] [0070] The UE 120 may include a signaling manager 150. In some aspects, the signaling manager 150 may perform operations related to the signaling received by the UE 120 (eg, demodulation, demultiplexing, etc.). For example, signaling manager 150 may receive a signal that has an in-phase component and a quadrature component; may identify at least one symbol pertaining to the UE 120, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and can demodulate the at least one symbol. Additionally or alternatively, the signaling manager 150 may receive a signal including a plurality of bit layers, wherein the plurality of bit layers are generated based at least in part on a QAM constellation; may identify at least one relevant bit layer of the plurality of bit layers which is relevant to the UE 120; and can determine a data stream based at least in part on the at least one relevant layer of bits. Additionally or alternatively, the signaling manager 150 may receive a multiplexed signal including at least two modulated data streams associated with respective polarization patterns, wherein the respective polarization patterns are applied using respective polarized antennas; and can obtain data from a relevant data stream of the at least two modulated data streams, wherein at least one other data stream of the at least two modulated data streams is filtered based at least in part on the at least one of the respective polarization patterns. Additionally or alternatively, the signaling manager 150 may transmit to a base station information identifying a bandwidth capacity of the UE 120, where the bandwidth capacity corresponds to a subband of a bandwidth base station beam; and can receive a user equipment specific beam from the base station, where the user equipment specific beam is specific to UE device 120 and occupies the subband, where the user equipment specific beam is a from among a plurality of non-overlapping user equipment specific beams transmitted by the base station in the beam bandwidth. Additionally or alternatively, the signaling manager 150 may perform similar operations or other operations described herein.
[0071] [0071] The UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless communication network 100, and each UE may be stationary or mobile. A UE may also be called an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE can be a cell phone (e.g. a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone , a wireless local circuit (WLL) station, a tablet-type computer, a camera, a gaming device, a netbook-type computer, a smartbook-type computer, an ultrabook-type computer, medical device or equipment, sensors / biometric devices, wearable devices (smart watches, smart clothing, smart glasses, smart bracelets, smart jewelry (e.g. smart ring, smart bracelet)), an entertainment device (e.g. a video or music device or a radio satellite), a vehicle component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other device which is configured to communicate over a wireless or wired medium.
[0072] [0072] Some UEs can be considered machine type communication (MTC) or evolved or improved machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices such as sensors, meters, monitors, location indicators, etc. ) or with some other entity. A wireless node can, for example, provide connectivity to or to a network (for example, a wide area network such as the Internet or a cellular network) over a wired or wireless communication link. Some UEs can be considered Internet of Things (IoT) devices, and/or can be implemented as can be implemented as NB-IoT (narrowband internet of things) devices. Some UEs can be considered a Customer Premises Equipment (CPE). The UE 120 may be included within a housing 120' that houses components of the UE 120, such as processor components, memory components and/or the like.
[0073] [0073] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a particular RAT and can operate on one or more frequencies. A RAT can also be called radio technology, air interface, etc. A frequency can also be called a carrier, a frequency channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.
[0074] [0074] In some examples, access to the air interface may be programmed, where a programming entity (e.g., a base station) allocates resources for communication among some or all of the devices and equipment contained in its area or cell of the programming entity. Within the present disclosure, as discussed below, the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities use resources allocated by the scheduling entity.
[0075] [0075] Base stations are not the only entities that can function as a programming entity. That is, in some examples, a UE may function as a programming entity, programming resources to one or more subordinate entities (eg, one or more other UEs). In this example, the UE is functioning as a programming entity, and other UEs use resources programmed by the UE for wireless communication. A UE can function as a scheduling entity in a peer-to-peer (P2P) network and/or a mesh network. In an example mesh network, the UEs can optionally communicate directly with each other in addition to communicating with the programming entity.
[0076] [0076] Thus, in a wireless communication network with a scheduled access to frequency and time resources and which has a cellular configuration, a P2P configuration and a mesh configuration, a schedule entity and one or more subordinate entities can communicate using programmed resources.
[0077] [0077] As indicated above, Figure 1 is provided merely as an example. Other examples are possible and may differ from the example described in relation to Figure 1.
[0078] [0078] Figure 2 shows a block diagram of a design of base station 110 and UE 120, which may be one of the base stations and one of the UEs in Figure 1. Base station 110 may be equipped with antennas T 234a to 234t, and the UE 120 can be equipped with antennas R 252a to 252r, where, in general, T > 1 and R > 1.
[0079] [0079] At base station 110, a transmission processor 220 can receive data from a data source
[0080] [0080] At UE 120, antennas 252a to 252r can receive the downlink signals from base station 110 and/or other base stations and can provide received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 may further process input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain symbols received from all demodulators R 254a to 254r, perform MIMO detection on received symbols if applicable, and provide detected symbols. A receiving processor 258 may process (e.g., demodulate and decode) the detected symbols, provide data to UE 120 to a data collector 260, and provide decoded control information and system information to a controller/processor 280. For example, receive processor 258 may perform one or more of the operations described with respect to signaling manager 150 above. Additionally or alternatively, the receive processor 258 may include means for performing one or more operations performed by the signaling manager 150 above. A channel processor can determine the received reference signal power (RSRP), received signal strength indicator (RSSI), received reference signal quality (RSRQ), channel quality indicator (CQI), etc.
[0081] [0081] On the uplink, at the UE 120, a transmission processor 264 can receive and process data from a data source 262 and control information (e.g. for reports comprising RSRP, RSSI, RSRQ, CQI, etc. ) of controller/processor 280. Transmission processor 264 may also generate reference symbols for one or more reference signals. Transmission processor 264 symbols may be pre-encoded by TX MIMO processor 266 if applicable, further processed by modulators 254a to 254r (e.g. for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station 110. At base station 110, uplink signals from UE 120 and other UEs may be received by antennas 234, processed by DEMODs 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120. For example, the receive processor 238 may perform one or more of the operations described with respect to the signaling manager 140 above. Additionally or alternatively, the receive processor 238 may include means for performing one or more operations performed by the signaling manager 140 above. Receive processor 238 may provide decoded data for data synchronization 239 and decoded control information to controller/processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 through the communication unit
[0082] [0082] In some respects, one or more components of the UE 120 may be included in a housing. Controllers/processors 240 and 280 and/or any other component (or components) in Figure 2 may direct operation at base station 110 and UE 120, respectively, to perform multiplexing schemes for single-carrier (SC) waveforms. ) millimeter wave downlink (mm Wave transmission). For example, the controller/processor 280 and/or other processors and modules at the UE 120 may perform or direct operations of the UE 120 to perform multiplexing schemes for transmitting MM Wave downlink SC waveforms. For example, controller/processor 280 and/or other controller/processor modules in UE 120 may perform or direct operations, for example, process 1000 of Figure 10, process 1200 of Figure 12, process 1400 of Figure 14, process 1600 of Figure 14 Figure 16 and/or other processes as described herein. For example, the controller/processor 240 and/or other processors and modules in the BS 110 may perform or direct operations from the BS 110 to perform multiplexing schemes for transmitting MM Wave downlink SC waveforms. For example, controller/processor 240 and/or other controller/processor modules in UE 110 may perform or direct operations, for example, of process 900 of Figure 9, process 1100 of Figure 11, process 1300 of Figure 13, process 1500 of Figure 13. Figure 15 and/or other processes as described herein. In some aspects, one or more components shown in Figure 2 may be employed to carry out the exemplary process 900, the exemplary process 1000, the exemplary process 1100, the exemplary process 1200, the exemplary process 1300, the exemplary process 1400, the exemplary process 1500, exemplary process 1600, and/or other processes for the techniques described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120 respectively. A scheduler 246 may schedule UEs for downlink and/or uplink data transmissions.
[0083] [0083] In some aspects, a receiving device (e.g., UE 120) may include means for receiving a signal that has an in-phase component and a quadrature component; means for identifying at least one symbol pertinent to the UE 120; means for demodulating the at least one symbol; means for receiving a signal including a plurality of bit layers; means for identifying at least one relevant bit layer of the plurality of bit layers that is relevant to the UE 120; means for determining the data stream based at least in part on the at least one relevant layer of bits; means for receiving a multiplexed signal including at least two modulated data streams associated with respective polarization patterns; means for obtaining data from a relevant data stream of the at least two modulated data streams; and/or similar. In some aspects, such means may include one or more components of the UE 120 described in conjunction with Figure 2.
[0084] [0084] In some aspects, a transmitting device (e.g., BS 110) may include means for receiving a first data stream and a second data stream; means for modulating the first data stream to create a first modulated data stream; means for modulating the second data stream to create a second modulated data stream; means for multiplexing the first modulated data stream and the second modulated data stream into one symbol using in-phase or quadrature carriers; means for adding a first signature to the first data stream and a second signature to the second data stream; means for receiving a plurality of data streams; means for mapping sets of data streams of the plurality of data streams to respective sets of bit layers of a plurality of bit layers; means for transmitting a signal including the plurality of bit layers; means for assigning respective sets of bit layers to one or more entities associated with the plurality of data streams; means for performing a modulation technique with respect to the at least two data streams to generate at least two corresponding modulated data streams for the at least two data streams; means for applying respective polarization patterns to the at least two modulated data streams; means for transmitting, as a multiplexed signal after respective polarizations are applied, the at least two modulated data streams; means for partitioning a bandwidth into multiple non-overlapping subbands; means for assigning subbands other than the multiple non-overlapping subbands to different recipient devices; means for forming a plurality of respective beams for the different recipient devices; and/or similar. In some aspects, such means may include one or more BS 110 components described in conjunction with Figure 2.
[0085] [0085] As indicated above, Figure 2 is provided merely as an example. Other examples are possible and may differ from the example described in relation to Figure 2.
[0086] [0086] Figure 3 shows an exemplary frame structure 300 for frequency division duplexing (FDD) in a telecommunication system (eg LTE). The transmission timeline for each of the downlink and uplink can be partitioned into units of radio frames. Each radio frame may have a predetermined duration (eg, 10 milliseconds (ms)) and may be partitioned into 10 subframes with indices from 0 to 9. Each subframe may include two slits. Thus, each radio frame can include 20 slits with indices from 0 to 19. Each slit can include symbol periods L, for example, seven symbol periods for a normal cyclic prefix (as shown in Figure 3) or six symbol periods for an extended cyclic prefix. The 2L symbol periods in each subframe can be assigned to indices from 0 to 2L-1.
[0087] [0087] Although some techniques are described in this document in conjunction with frames, subframes, slits and/or similar, these techniques may apply equally to other types of wireless communication structures, which may be referred to using different terms. of "frame", "subframe", "slit" and/or similar in 5G NR. In some respects, a wireless communication structure may refer to a time-limited periodic communication unit defined by a wireless communication standard and/or protocol.
[0088] [0088] In certain telecommunications (e.g. LTE), a BS may transmit a primary sync signal (PSS) and a secondary sync signal (SSS) on the downlink at the center of the system bandwidth for each cell supported by the system. BS. PSS and SSS can be transmitted in symbol periods 6 and 5, respectively, in subframes 0 and 5 of each radio frame with the normal cyclic prefix as shown in Figure 3. PSS and SSS can be used by UEs to cell search and acquisition. The BS may transmit a cell-specific reference signal (CRS) across the system bandwidth for each cell supported by the BS. The CRS may be transmitted at certain symbol periods of each subframe and may be used by UEs to perform channel estimation, channel quality measurement and/or other functions. The BS may also transmit a physical broadcast channel (PBCH) in symbol periods 0 to 3 in slot 1 of certain radio frames. The PBCH may carry some system information. TA BS may transmit other system information such as system information blocks (SIBs) on a physical downlink shared channel (PDSCH) in certain subframes. The BS may transmit control information/data on a physical downlink control channel (PDCCH) in the first B symbol periods of a subframe, where B may be configurable for each subframe. The BS may transmit traffic data and/or other data on the PDSCH in the remaining symbol periods of each subframe.
[0089] [0089] In other systems (eg such as NR or 5G systems), a Node B may transmit these and other signals at these locations or at locations other than the subframe. Additionally or alternatively, Node B may use different multiplexing schemes, such as the multiplexing schemes described elsewhere in this document.
[0090] [0090] As indicated above, Figure 3 is provided merely as an example. Other examples are possible and may differ from the example described in relation to Figure 3.
[0091] [0091] Figure 4 shows two exemplary subframe formats 410 and 420 with the normal cyclic prefix. Available time frequency resources can be partitioned into resource blocks. Each resource block can cover 12 subcarriers in a slot and can include multiple resource elements. Each resource element can cover a subcarrier in a symbol period and can be used to send a modulation symbol, which can be a real or complex value.
[0092] [0092] Subframe format 410 can be used for two antennas. A CRS can be transmitted from antennas 0 and 1 in symbol periods 0, 4, 7 and
[0093] [0093] PSS, SSS, CRS and PBCH in LTE are described in the 3 GPP Technical Specification 36.211 entitled "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation," which is publicly available.
[0094] [0094] An interleaving structure can be used for each of the downlink and uplink for FDD in certain telecommunication systems (eg LTE). For example, entanglements of Q with indices from 0 to Q-1 can be defined, where Q can be equal to 4, 6, 8, 10 or some other value. Each interlace may include subframes that are separated by Q frames. In particular, the interlace q may include subframes q, q+Q, q+2Q, etc., where q ∈ {o,..., ,Q-1 } .
[0095] [0095] Wireless network can support Hybrid Automatic Retransmission Request (HARQ) for downlink and uplink data transmission. For HARQ, a sender (eg, a BS) may send one or more transmissions of a packet until the packet is correctly decoded by a receiver (eg, a UE) or some other termination condition is met. For synchronous HARQ, all packet transmissions can be sent in single interleave subframes. For asynchronous HARQ, each packet transmission can be sent in any subframe.
[0096] [0096] A UE may be located in the coverage of multiple BSs. One of these BSs can be selected to serve the UE. The service BS can be selected based at least in part on various criteria such as received signal strength, received signal quality, path loss and/or the like. Received signal quality can be quantified by an interference to noise to signal ratio (SINR) or a reference signal received quality (RSRQ) or some other metric. The UE may operate in an interference dominant scenario in which the UE may observe high interference from one or more interference BSs.
[0097] [0097] While aspects of the examples described in this document may be associated with LTE technologies, aspects of the present disclosure may be applicable to other wireless communications systems, such as NR or 5G technologies.
[0098] [0098] Radio, new (NR) can refer to radios configured to operate under a new air interface (e.g. different from air interfaces based on Orthogonal Frequency Division Multiple Access (OFDMA)) or with the fixed transport layer (for example, different from Internet Protocol (IP)). In aspects, the NR may use OFDM with a CP (called cyclic prefix OFDM or CP-OFDM in this document) and/or SC-FDM on the uplink, may use CP-OFDM on the downlink, and include support for half operation -duplex using time division duplexing (TDD). In aspects, the NR can, for example, use OFDM with a CP (called CP-OFDM in this document) and/or orthogonal frequency division multiplexing discrete Fourier transform (DFT-s-OFDM) on the link uplink, can use CP-OFDM on the downlink, and includes support for half-duplex operation using TDD. NR can include Enhanced Mobile Broadband (eMBB) service that targets wide bandwidth (e.g. 80 megahertz (MHz) and beyond), millimeter wave (mmW) that targets high carrier frequency (e.g. 60 gigahertz (GHz)), massive MTC (mMTC) targeting backward compatible MTC techniques, and/or mission critical targeting low-reliability latency communications service (URLLC).
[0099] [0099] A single component carrier bandwidth of 100 MHz can be supported. NR resource blocks can span 12 subcarriers with a subcarrier bandwidth of 75 kilohertz (kHz) for a duration of 0.1 ms. Each radio frame can include 50 subframes with a length of 10 ms. Consequently, each subframe can be 0.2 ms long. Each subframe can indicate a link direction (i.e. DL or UL) for data transmission and the link direction for each subframe can be dynamically switched. Each subframe can include DL/UL data as well as DL/UL control data. The UL and DL subframes for NR may be as described in more detail below with reference to the Figures. 7 and 8.
[0100] [0100] Beamforming can be supported and beam direction can be dynamically configured. Pre-encoded MIMO streams can be supported as well. MIMO configurations in DL can support up to 8 broadcast antennas with multi-layer DL transmissions up to 8 streams and up to 2 streams per UE. Multilayer transmissions with up to 2 streams per UE can be supported. Multiple cell aggregation can be supported with up to 8 service cells. Alternatively, the NR can support an air interface other than the OFDM-based air interface. NR networks can include entities such as central units or distributed units.
[0101] [0101] The RAN may include a central unit (CU) and distributed units (DUs). A BS of NR (e.g. gNB, 5G Node B, Node B, receive and transmit point (TRP), access point (AP)) can correspond to one BS or multiple BSs. NR cells can be configured as access cells (ACells) or just data cells (DCells). For example, the radio access network (RAN) (eg a central unit or distributed unit) can configure the cells. DCells can be cells used for carrier aggregation or dual connectivity, but are not used for initial access, cell selection/reselection, or handover. In some cases, DCells may not transmit sync signals. In some cases, DCells can transmit sync signals. The NR BSs can transmit downlink signals to the UEs that indicate the cell type. Based at least in part on the cell type indication, the UE can communicate with the BS of NR. For example, the UE may determine NR BSs to consider for cell selection, access, transfer and/or measurement based on the indicated cell type.
[0102] [0102] As indicated above, Figure 4 is provided as an example. Other examples are possible and may differ from the example described in relation to Figure 4.
[0103] [0103] Figure 5 is a diagram illustrating an example 500 of quadrature/phase multiplexing in accordance with various aspects of the present disclosure. For the purposes of Figure 5, a transmitting device (e.g., a BS 110) is considered to be performing the operations shown in example 500. In some aspects, another device (e.g., UE 120) may perform one or more (or all) of the operations shown in example 500.
[0104] [0104] As shown in Figure 5, and by reference numeral 505, the transmitting device may receive a first stream of data for UE A (e.g., a recipient device such as a UE 120), and may receive a second stream data to UEB (e.g. another recipient device). In some aspects, the first data stream and/or the second data stream may be received from a higher layer of the transmitting device (e.g. after processing the first data stream and/or the second data stream) from a external source and/or similar. In some aspects, the data stream may include sets of bits of information that are to be used to form respective symbols or parts of symbols. In some respects, UE A may be a different UE B. Additionally or alternatively, UE A and UE B may be the same UE. For example, the first data stream and the second data stream can be different data streams destined for the same UE. In some aspects, the first data stream and/or the second data stream may be for a device other than a UE. The aspects described in this document are not limited to the multiplexing of data directed to the UEs.
[0105] [0105] As shown by reference number 510, the transmitting device can perform channel coding on the first data stream and the second data stream. For example, the transmitting device may add a cyclic redundancy check (CRC), an error detection code and/or the like. In some aspects, the transmitting device may perform rate matching to increase or decrease a code rate of the first data stream and/or the second data stream.
[0106] [0106] As shown by reference numeral 515, the transmitting device may insert a signature associated with UE A into the first data stream after channel coding is performed on the first data stream. The signature associated with UE A may include any information that identifies UE A or is associated with UE A. In some aspects, the transmitting device may add the signature before a bitstream encoded data set. In some aspects, the transmitting device may add the signature after a bitstream encoded dataset. As shown by reference numeral 520, the transmitting device may insert a signature associated with UE A into the first data stream after channel coding is performed on the first data stream. The signature associated with UE B may include any information that identifies UE B or is associated with UE B. UE A and/or UE B may use their respective signatures to identify symbols, codewords, or sets of bits relevant to the UEB. UE A and/or UE B.
[0107] [0107] As shown by reference number 525, the transmitting device can apply amplitude modulation to the first data stream and the second data stream. Thus, the transmitting device can generate a first stream of modulated data and a second stream of modulated data. In some aspects, the transmitting device can QAM the first data stream and the second data stream.
[0108] [0108] As shown by reference number 530, the transmitting device may use a phased carrier and a quadrature carrier to multiplex the amplitude modulated data streams into a single carrier QAM (SC-QAM) symbol. In the document, the quadrature carrier is used for the second data stream (denoted as multiplying the second data stream by j). Thus, the phase/quadrature multiplexed (I/Q) SC-QAM symbol is generated from the first data stream and the second data stream. The phase/quadrature multiplexed I/Q SC-QAM symbol can preserve the SC properties of the waveform, which can enhance the PAPR of the waveform and therefore improve the downlink performance of the transmitting device. As shown by part number 535, the transmitting device can perform pulse shaping and/or can transmit the SC-QAM symbols. By performing pulse shaping, the transmitting device can further improve the SC performance of the waveform.
[0109] [0109] In some aspects, the transmitting device may use TDM in conjunction with I/Q multiplexing data streams for more than two UEs. As an example, for a first time frame 1≤ n < TAB, the transmitting device can multiplex UEs A and B into QAM symbols SA(n) + jSB(n). For a second time frame 1+TAB≤ n≤ TAB+ TCD, the transmitting device may multiplex UEs C and D into QAM symbols Sc(n) + jSD(n). Of course, other TDM/I/Q multiplexing approaches are possible, and any combination of UEs, time frames, and TDM arrangements can be used.
[0110] [0110] As indicated above, Figure 5 is provided as an example. Other examples are possible and may differ from the example described in relation to Figure 5.
[0111] [0111] Figure 6 is a diagram illustrating an example 600 of QAM overlay based at least in part on layered bit mapping in accordance with various aspects of the present disclosure. For the purposes of Figure 6, a transmitting device (e.g., a BS 110) is considered to be performing the operations shown in example 600. In some aspects, another device (e.g., UE 120) may perform one or more (or all) of the operations shown in example 600.
[0112] [0112] Figure 6 describes the mapping of data streams to bit layers that are generated using a binary expansion of a layered QAM constellation. For example, due to the high penetration loss and quasi-optical propagation of mm Wave transmission, the mm Wave channel can be approximated by a binary expansion of the layered QAM constellation. To illustrate, the transmitting device is considered to transmit a constellation in layer S with distinct layers M. Each layer can be associated with a respective power level based at least in part on the components in I and/or Q that form each layer. . For example, magnitude levels in I and/or Q components can be shown or approximated by the following equation: where
[0113] [0113] As a more particular example, consider a layered 64 QAM constellation. Each constellation point of the 64 QAM constellation X can be represented by a two-dimensional array[Xj XQ]. XJ and XQ represent the projection of X for in-phase (I) and quadrature (Q) branches respectively. Furthermore, there are 8 distinct amplitude levels in both the I branch and the Q branch in the 64 QAM constellation X. Through binary expansion, the amplitude levels can be represented by: X1 =∑2m=o B1(m) 2m, where B1m)=±1 , and XQ =∑2n=oBQ(n)2n, where BQ(n)=±1, respectively.
[0114] [0114] For the I branch, the 8 amplitude levels are mapped to a set of three bit layers determined by [5/(0) B/(2)]. Similarly, for the branch on Q, the 8 levels of amplitude are mapped to another set of three bit layers determined by [BQ(0 BQX BQ(2)]. So there are, in total, 3 + 3 = 6 layers available for multiplexing In accordance with channel feedback, QoS requirements and/or the like, the transmitting device may allocate a different combination of one or more bit layers to each UE as described in more detail below.
[0115] [0115] As shown in Figure 6, and by reference number 605, the transmitting device can assign bit layer sets of a layered constellation to one or more UEs. In the document, the transmitting device assigns sets of bit layers to UE A, UE B and UE C as described in more detail below. As shown, the transmitting device may assign a bit layer based at least in part on the channel information. For example, when a UE reports channel information (e.g., channel state information (CSI), feedback, and/or the like) that indicates poor channel quality, the transmitting device may assign an associated layer to higher transmit power. . As shown further, the transmitting device may assign a bit layer based at least in part on a QoS requirement of a UE. For example, when the UE is associated with a high QoS requirement, the transmitting device may assign an associated bit layer with higher transmit power. In some respects, the transmitting device may assign a bit layer based at least in part on a combination of channel information and the QoS requirement.
[0116] [0116] As shown by reference numeral 610, at least one bit layer can be assigned to each of UE A, UE B and UE C. For example,
[0117] [0117] In some respects, the transmitting device may assign a bit layer based at least in part on a traffic type. For example, control data (e.g. a PDCCH, a physical uplink control channel (PUCCH), etc.) can be assigned to a more reliable bit layer or a bit layer associated with a higher level. higher power than traffic data (e.g. payload data, a PDSCH, an uplink shared physical channel (PUSCH), etc.). This can be done for the same UE or for different UEs. When two or more bit layers are assigned, the bit layers may or may not be adjacent to each other. In some respects, bit layers may be assigned based at least in part on a throughput function or a utility function. For example, the transmitting device may maximize a throughput function or utility function by assigning the bit layers based at least in part on channel feedback, QoS requirements, bit layer power levels, and/or similar.
[0118] [0118] As shown by reference numeral 615, the transmitting device can perform channel coding and rate matching for data streams associated with UE A, UE B, and UE C. For example, the transmitting device can add CRCs, error checking and/or similar data streams. Additionally or alternatively, the transmitting device may perform rate matching for one or more data streams. By performing rate matching, the transmitting device can improve resiliency or reliability of data streams. For example, the transmitting device may use stronger channel coding and/or a more resilient rate for information associated with a higher QoS requirement. As another example, the transmitting device may use stronger channel coding and/or a more resilient rate for information assigned to a bit layer associated with a lower power level to increase the probability of successful reception of the information.
[0119] [0119] As shown by reference number 620, the transmitting device can perform permutation to prepare data streams from UEs A, B and C to map to the QAM constellation. For example, the transmitting device can modulate data streams to particular amplitude levels with respect to the I and Q components of the QAM constellation, so that the data streams can be mapped to corresponding bit layers. The permutation can provide multi-user gain and/or diversity gain for the transmitted signal. In some respects, the permutation may be configured by the transmitting device (for example, with the use of sending radio resource control messages, control information such as downlink control information and/or the like).
[0120] [0120] As shown by reference number 625, the transmitting device can perform QAM constellation mapping of data streams. For example, the transmitting device can generate symbols according to a layered QAM constellation using data streams from UEs A, B and C (for example, using carriers in I and Q that are modulated according to the particular amplitude levels of the bit layers to which the data streams must be mapped). As shown by reference numeral 630, the transmitting device may perform pulse shaping and/or may transmit an RF signal including the SC-QAM symbols generated as part of the QAM constellation mapping process.
[0121] [0121] In this way, the transmitting device multiplexes multiple different data streams using different bit layers of a layered QAM constellation. When generating symbols using the different bit layers, the SC properties of the transmitted waveform are preserved. Additionally, uneven error protection for the multiple different data streams is enabled based at least in part on the different transmit power levels of the bit layers. These operations can be performed for a shared channel (e.g. data channel, PDSCH, PUSCH, etc.), a control channel (e.g. PDCCH, PUCCH, etc.), and/or a hybrid or a combination of a shared channel and a control channel.
[0122] [0122] As indicated above, Figure 6 is provided as an example. Other examples are possible and may differ from the example described in relation to Figure 6.
[0123] [0123] Figure 7 is a diagram illustrating an example 700 of polarization division multiplexing for wireless communications, in accordance with various aspects of the present disclosure. For the purposes of Figure 7, the operations of example 700 are assumed to be performed by a transmitting device (eg, a BS 110). In some aspects, another device (e.g., UE 120) may perform one or more (or all) of the operations shown in example 700.
[0124] [0124] As shown in Figure 7, and by reference number 710, the transmitting device may receive or generate a data stream associated with a UE A (e.g., a recipient device such as UE 120) and an associated data stream to a UE B (e.g. another recipient device). In some aspects, data streams may be received from a higher layer of the transmitting device (e.g. after processing the data streams), from an external source and/or the like. As shown by reference numeral 720, the transmitting device may perform QAM modulation of the data stream associated with UE A and the data stream associated with UE B. For example, the transmitting device may map each data stream to a respective constellation. of QAM to generate QAM symbols and/or to generate modulated data streams corresponding to the data streams. The aspects described in this document are not limited to those in which data flows are directed to UEs.
[0125] [0125] As shown by reference number 730, the transmitting device can perform polarization division multiplexing of the modulated data streams. To perform polarization division multiplexing, the transmitting device can transmit each data stream modulated according to a different polarization pattern. For example, the transmitting device may transmit a first stream of modulated data using a first polarized antenna of the transmitting device, and may transmit a second stream of modulated data using a second polarized antenna of the transmitting device which is associated with a different polarization pattern than the first polarized antenna. In some aspects, the transmitting device may perform polarization division multiplexing based at least in part on the capabilities of a receiving device, such as a UE 120. For example, the transmitting device may identify a polarization pattern that a receiving device is capable of. to receive, and can use the identified polarization pattern to transmit a stream of data to the receiving device. As shown by reference numeral 740, the transmitting device may perform pulse shaping and/or may transmit RF signals including the multiplexed signal.
[0126] [0126] In some aspects, the transmitting device may transmit data streams to multiple different UEs using a single polarization pattern. In such a case, the transmitting device may use overlay coding to multiplex the data streams to multiple different UEs. For example, the transmitting device may use a first level of overlap for a first data stream from a first receiving device (e.g. UE 120), and may use a second level of overlap for a second data stream from a second device. recipient. In such a case, the transmitting device may assign the first level and/or second level based at least in part on the data streams and/or the recipient devices. For example, the transmitting device may assign a more resilient tier for a higher priority data stream, may assign a tier with a higher data rate for a higher data stream bandwidth, and/or the like.
[0127] [0127] In some aspects, the transmitting device can perform polarization division multiplexing for at least two data streams (e.g. 3 data streams, 4 data streams, 5 data streams, 6 data streams, etc. ). For example, the transmitting device may use a different polarization pattern for each data stream of the at least two data streams. Additionally or alternatively, the transmitting device may use overlay coding to multiplex two or more data streams contained in the same polarization pattern. In this way, data for multiple different data streams can be multiplexed into a single polarization pattern or using multiple different polarization patterns. Additionally, by multiplexing the data streams using polarization division multiplexing (eg, compared to OFDM), the transmitting device preserves the single-carrier properties of the waveform.
[0128] [0128] As indicated above, Figure 7 is provided as an example. Other examples are possible and may differ from the example described in relation to Figure 7.
[0129] [0129] Figure 8 is a diagram illustrating an example 800 of FDM using UE-specific beamforming, in accordance with various aspects of the present disclosure. For the purposes of Figure 8, the operations of example 800 are assumed to be performed by a transmitting device (eg, a BS 110). In some aspects, another device (e.g., UE 120) may perform one or more (or all) of the operations shown in example 800.
[0130] [0130] As shown in Figure 8, and by reference number 810, a transmitting device can partition a transmitting device bandwidth into multiple non-overlapping subbands. In Figure 8, the transmitting device partitions the bandwidth into an A subband, a B subband, and a C subband, which do not overlap with each other. For example, the transmitting device may partition the bandwidth into the subbands to form respective UE-specific beams for recipient devices for communication within the subbands. In some respects, the subbands may include less than the bandwidth of the transmitting device. As used herein, transmitting device bandwidth may refer to a bandwidth of a downlink communication channel of the transmitting device. In some respects, the subbands do not overlap. In some respects, the subbands may be separated by a protective band or similar spacing.
[0131] [0131] In some respects, the transmitting device may partition bandwidth based at least in part on the capabilities or configuration of a receiving device (eg UE 120). For example, a UE (e.g. low-end UEs, machine-type communication (MTC) UEs, etc.) may not have the ability to access the entire bandwidth of a downlink communication channel of the transmitting device. . In such a case, the transmitting device can partition the bandwidth of the downlink communication channel so that the UE can use a portion of the bandwidth that the UE is able to use. Then, the transmitting device can allocate other portions of the bandwidth to other UEs, and can form UE-specific beams to the UE and to other UEs, which reduces the overflow effect and the interference between the downlink signals associated with the UE. UE and the downlink signals associated with the other UEs.
[0132] [0132] As shown by reference number 820, the transmitting device may assign different non-overlapping subbands to different receiving devices. For example, the transmitting device may assign each subband to a respective receiving device based at least in part on the bandwidth capabilities of the receiving devices. In Figure 8 , the transmitting device assigns subband A to UE A, subband B to UE B and subband C to UE C.
[0133] [0133] As shown by reference numeral 830, the transmitting device may form respective UE-specific beams to the different recipient devices. For example, each UE-specific beam may be confined to the subband assigned to the target device to which each UE-specific beam is directed. In this way, interference between the subbands is reduced. This can be particularly beneficial for recipient devices that are not configured or capable of using full system bandwidth.
[0134] [0134] As indicated above, Figure 8 is provided as an example. Other examples are possible and may differ from the example described in relation to Figure 8.
[0135] [0135] Figure 9 is a diagram illustrating an exemplary process 900 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 900 is an example where a transmitting device (e.g., BS 110) performs quadrature/phase multiplexing.
[0136] [0136] As shown in Figure 9, in some aspects, process 900 may include receiving a first data stream and a second data stream (block 910). For example, the transmitting device (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller/processor 240 and/or the like) may receive a first data stream and a second data stream. of data. The transmitting device may receive the first data stream and the second data stream to multiplex the first data stream and the second data stream using I/Q multiplexing as described in more detail elsewhere in this document. In some aspects, the first data stream and/or the second data stream may be received from a higher layer of the transmitting device (e.g. after processing the first data stream and/or the second data stream) from a external source and/or similar.
[0137] [0137] As shown in Figure 9, in some aspects, process 900 may include modulating the first data stream to create a first modulated data stream (block 920), and modulating the second data stream to create a second data stream. modulated data (block 930). For example, the transmitting device (e.g. using controller/processor 240 and/or the like) can modulate the first data stream and the second data stream. In some aspects, the transmitting device may insert UE-specific signatures corresponding to the recipient devices associated with the first data stream and the second data stream, which enables identification of the first modulated data stream and the second modulated data stream.
[0138] [0138] As shown in Figure 9, in some aspects, process 900 may include multiplexing the first stream of modulated data and the second stream of modulated data into one symbol using either in-phase or quadrature carriers (block 940). For example, the transmitting device (e.g., using controller/processor 240, transmission processor 220, TX MIMO processor 230, MOD 232, antenna 234 and/or the like) may multiplex the first modulated data stream and the second modulated data stream. The transmitting device may multiplex the first modulated data stream using a phased carrier, and may multiplex the second modulated data stream using a quadrature carrier. By multiplexing the data streams using I/Q multiplexing, the transmitting device preserves the SC properties of the SC waveform.
[0139] [0139] With respect to the 900 process, in some respects, the 900 process may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0140] [0140] In some aspects, the transmitting device is additionally configured to add a first signature to the first data stream and a second signature to the second data stream, where the first signature and the second signature are added to identify a destination of the data. first data stream and the second data stream by at least one decoding device. In some respects, the first signature and second signature are added after channel encoding the first data stream and the second data stream. In some respects, the first signature and second signature are added after channel encoding the first data stream and the second data stream. In some respects, modulation is amplitude modulation. In some aspects, the first data stream is associated with a first receiving device and the second data stream is associated with a second receiving device. In some aspects, the first data stream is associated with a first receiving device and a second receiving device, and time division multiplexing is used to multiplex symbols associated with the first receiving device and the second receiving device for transmission.
[0141] [0141] Although Figure 9 shows exemplary blocks of process 900, in some aspects, process 900 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 9. Additionally or alternatively, two or more blocks of process 900 can be performed in parallel.
[0142] [0142] Figure 10 is a diagram illustrating an exemplary process 1000 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 1000 is an example where a recipient device (e.g., a wireless communication device such as UE 120) communicates using I/Q multiplexing.
[0143] [0143] As shown in Figure 10, in some aspects, the process 1000 may include receiving a signal that has an in-phase component and a quadrature component (block 1010). For example, the receiving device (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller/processor 280, and/or the like) may receive a signal that has an in-phase component and a quadrature component. In some aspects, the signal may be generated based at least in part on the process 900 described above.
[0144] [0144] As shown in Figure 10, in some aspects, process 1000 may include identifying at least one symbol pertinent to the recipient device, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component (block 1020). For example, the target device (e.g. using controller/processor 280 and/or the like) can identify at least one signal symbol that is pertinent to the target device. In some aspects, the recipient device may identify the at least one token based at least in part on the UE-specific signature included in the at least one token. The at least one symbol may be identified from at least one of the in-phase component or the quadrature component (e.g., based at least in part on the possibility that a data stream associated with the at least one symbol is modulated with the use of the in-phase carrier or the quadrature carrier).
[0145] [0145] As shown in Figure 10, in some aspects, process 1000 may include demodulating the at least one symbol (block 1030). For example, the receiving device (e.g., using DEMOD 254, MIMO detector 256, receiving processor 258, controller/processor 280 and/or the like) may demodulate the at least one symbol to obtain an associated data stream. to the recipient device. In some aspects, the at least one symbol is identified based at least in part on the at least one symbol that is received in one of the in-phase component or the quadrature component. In some aspects, the at least one token is identified based at least in part on the signature specific to the recipient device associated with the at least one token. In some aspects, the at least one symbol is identified from a plurality of symbols in one of the in-phase component or the quadrature component, wherein the at least one symbol is time division multiplexed with the plurality of symbols.
[0146] [0146] With respect to Process 1000, in some respects, Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0147] [0147] Although Figure 10 shows exemplary blocks of process 1000, in some aspects, process 1000 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 10. Additionally or alternatively, two or more blocks of process 1000 can be performed in parallel.
[0148] [0148] Figure 11 is a diagram illustrating an exemplary process 1100 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 1100 is an example where a transmitting device (e.g., BS 110) performs QAM overlay based at least in part on layered bit mapping.
[0149] [0149] As shown in Figure 11, in some aspects, process 1100 may include receiving a plurality of data streams (block 1110). For example, the transmitting device (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller/processor 240 and/or the like) can receive a plurality of data streams. The plurality of data streams may be associated with at least one recipient device. The transmitting device may receive the plurality of data streams to multiplex the plurality of data streams using the bit layers of a layered QAM constellation. In some aspects, the plurality of data streams may be received from an upper layer of the transmitting device (e.g., after processing the plurality of the first data stream and/or the second data stream), from an external source, and/or or similar.
[0150] [0150] As shown in Figure 11, in some aspects, process 1100 may include mapping sets of data streams from the plurality of data streams to respective sets of bit layers of a plurality of bit layers, wherein each layer of the plurality of bit layers corresponds to a binary expansion value that is generated based at least in part on a QAM constellation (block 1120). For example, the transmitting device (e.g. using controller/processor 240 and/or the like) may map sets of data streams from the plurality of data streams to respective sets of bit layers of a plurality of data layers. bit. Bit layers can correspond to binary expansion values that are generated based at least in part on a QAM constellation, such as a layered QAM constellation.
[0151] [0151] As shown in Figure 11, in some aspects, the process 1100 may include transmitting a signal including the plurality of bit layers (block 1130). For example, the transmitting device may transmit a signal including the plurality of bit layers. In some aspects, the transmitting device may determine symbols using the QAM constellation and based at least in part on mapping the data streams to the bit layers, and may transmit a signal that identifies the symbols.
[0152] [0152] With respect to the 1100 process, in some respects, the 1100 process may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0153] [0153] In some aspects, the plurality of bit layers are associated with a plurality of corresponding transmit power levels, and the respective sets of bit layers are assigned to one or more entities based at least in part on the bit levels. corresponding transmit power of the plurality of corresponding transmit power levels associated with respective sets of bit layers.
[0154] [0154] Although Figure 11 shows exemplary blocks of process 1100, in some aspects, process 1100 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 11. Additionally or alternatively, two or more blocks of process 1100 can be performed in parallel.
[0155] [0155] Figure 12 is a diagram illustrating an exemplary process 1200 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 1200 is an example where a recipient device (e.g., a wireless communication device such as UE 120) communicates using QAM overlay based at least in part on layered bit mapping.
[0156] [0156] As shown in Figure 12, in some aspects, the process 1200 may include receiving a signal including a plurality of bit layers, wherein the plurality of bit layers is generated based at least in part on a QAM constellation (block 1210). For example, the receiving device (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller/processor 280 and/or the like) may receive a signal. The signal may include a plurality of bit layers. The plurality of bit layers can be generated based at least in part on a QAM constellation. For example, the signal may include symbols that are generated according to a QAM constellation bit layer that is assigned to the wireless communication device.
[0157] [0157] As shown in Figure 12, in some aspects, process 1200 may include identifying at least one relevant bit layer of the plurality of bit layers that is relevant to the wireless communication device (block 1220). For example, the recipient device (e.g. using controller/processor 280 and/or the like) may identify at least one relevant bit layer that is relevant to the recipient device. In some aspects, the receiving device may identify the relevant bit layer based at least in part on information included in the relevant bit layer (e.g. a UE identifier and/or the like). In some aspects, the receiving device may identify the relevant layer of bits based at least in part on programming information that indicates that the relevant layer of bits is pertinent to the receiving device.
[0158] [0158] As shown in Figure 12, in some aspects, process 1200 may include determining a data stream based at least in part on at least one relevant bit layer (block 1230). For example, the receiving device (e.g. using controller/processor 280 and/or the like) may determine a data stream based at least in part on at least one relevant bit layer. In some aspects, the receiving device may determine a data stream based at least in part on the relevant multiple bit layers (for example, when multiple bit layers are assigned to the wireless communication device).
[0159] [0159] With respect to the 1200 process, in some respects, the 1200 process may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0160] [0160] In some respects, the at least one relevant layer of bit is identified based at least in part on a transmit power level of the at least one relevant layer of bit. In some aspects, the at least one relevant bit layer includes at least two bit layers that are not adjacent to each other. In some respects, the at least one bit layer is assigned based at least in part on a quality of service requirement, a priority class, or an error protection requirement of the recipient device.
[0161] [0161] Although Figure 12 shows exemplary blocks of process 1200, in some aspects, process 1200 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 12. Additionally or alternatively, two or more blocks of process 1200 can be performed in parallel.
[0162] [0162] Figure 13 is a diagram illustrating an exemplary process 1300 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 1300 is an example where a transmitting device (e.g., BS 110) performs polarization division multiplexing for wireless communications.
[0163] [0163] As shown in Figure 13, in some aspects, the process 1300 may include performing a modulation technique against at least two data streams to generate at least two modulated data streams corresponding to the at least two data streams ( block 1310). For example, the transmitting device (e.g., using controller/processor 240, transmission processor 220, TX MIMO processor 230, MOD 232, antenna 234 and/or the like) may perform a modulation technique with respect to at least two data streams. In some aspects, the at least two data streams may be destined for the respective recipient devices (e.g. wireless communication devices such as UE 120). In some aspects, the modulation technique may include a QAM technique and/or the like. The transmitting device may perform the modulation technique to generate at least two modulated data streams using the at least two data streams to multiplex using polarization division multiplexing. In some aspects, the at least two data streams may be received from an upper layer of the transmitting device (e.g. after processing the at least two data streams), from an external source and/or the like.
[0164] [0164] As shown in Figure 13, in some aspects, process 1300 may include applying the respective polarization patterns to the at least two modulated data streams (block 1320). For example, the transmitting device (e.g., using controller/processor 240, transmission processor 220, TX MIMO processor 230, MOD 232, antenna 234 and/or the like) may apply the respective polarization patterns to the at least least two modulated data streams. In some respects, the transmitting device may select the respective polarization patterns for application to the at least two modulated data streams (e.g. based at least in part on the capabilities of recipient devices of the at least two modulated data streams and/or or similar). Additionally or alternatively, the transmitting device may identify particular polarized antennas to transmit the at least two modulated data streams so that the respective polarization patterns are applied.
[0165] [0165] As shown in Figure 13, in some aspects, the process 1300 may include transmitting, as a multiplexed signal after the respective polarization patterns are applied, the at least two modulated data streams (block 1330). For example, the transmitting device (e.g., using controller/processor 240, transmission processor 220, TX MIMO processor 230, MOD 232, antenna 234 and/or the like) can transmit the at least two data streams modulated as a multiplexed signal after the respective polarization patterns are applied. In some aspects, the transmission of the at least two modulated data streams may apply the respective polarization patterns. For example, the transmitting device may use polarized antennas associated with the respective polarization patterns to transmit the at least two modulated data streams.
[0166] [0166] With respect to the 1300 process, in some respects, the 1300 process may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0167] [0167] In some respects, the modulation technique is a quadrature amplitude modulation technique. In some aspects, a particular data stream of the at least two data streams includes data multiplexed to multiple different wireless communication devices. In some aspects, the multiplexed data is multiplexed based at least in part on at least one of an overlap amplitude modulation technique using layered bit mapping or a phase/quadrature multiplexing technique. In some respects, the respective polarization standards are applied using the respective polarized antennas of the transmitting device.
[0168] [0168] Although Figure 13 shows exemplary blocks of process 1300, in some aspects, process 1300 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 13. Additionally or alternatively, two or more blocks of process 1300 can be performed in parallel.
[0169] [0169] Figure 14 is a diagram illustrating an exemplary process 1400 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 1400 is an example where a recipient device (e.g., a wireless communication device such as UE 120) communicates using polarization division multiplexing for wireless communications.
[0170] [0170] As shown in Figure 14, in some aspects, the 1400 process may include receiving a multiplexed signal including at least two modulated data streams associated with the respective polarization patterns, wherein the respective polarization patterns are applied using the respective polarized antennas of a base station (block 1410). For example, the receiving device (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller/processor 280 and/or the like) may receive a multiplexed signal. The multiplexed signal may include at least two modulated data streams that are associated with respective polarization patterns. The respective polarization patterns can be applied using the respective polarized antennas of a transmitting device that transmitted the multiplexed signal.
[0171] [0171] As shown in Figure 14, in some respects the 1400 process may include obtaining data from a relevant stream of data from the at least two modulated data streams, wherein at least one other stream of data from the at least two modulated data streams is filtered based at least in part on at least one of the respective polarization patterns (block 1420). For example, the receiving device (e.g. using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller/processor 280 and/or the like) can obtain data from a relevant stream of data. of the at least two modulated data streams. To obtain the data, the receiving device may filter at least one other data stream from the at least two modulated data streams based at least in part on at least one of the respective polarization patterns. This filtering can be active (for example, when the receiving device has a receiving antenna that is capable of selectively filtering polarization patterns) or passive. For example, the receiving device may only be capable of receiving a particular polarization pattern associated with the relevant data stream.
[0172] [0172] With respect to the 1400 process, in some respects, the 1400 process may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0173] [0173] In some respects, the at least two modulated data streams are modulated using quadrature amplitude modulation. In some aspects, the relevant stream of data includes data multiplexed to multiple different recipient devices including the recipient device, and the recipient device is configured to extract the relevant stream of data from the multiplexed data. In some aspects, the multiplexed data is multiplexed based at least in part on at least one of an overlay quadrature amplitude modulation technique using layered bit mapping or a phase/quadrature multiplexing technique.
[0174] [0174] Although Figure 14 shows exemplary blocks of process 1400, in some aspects, process 1400 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 14. Additionally or alternatively, two or more blocks of process 1400 can be performed in parallel.
[0175] [0175] Figure 15 is a diagram illustrating an exemplary process 1500 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 1500 is an example where a transmitting device (e.g., BS 110) performs FDM using UE-specific beamforming.
[0176] [0176] As shown in Figure 15, in some aspects, process 1500 may include partitioning a bandwidth into multiple non-overlapping subbands (block 1510). For example, the transmitting device (e.g. using controller/processor 240 and/or the like) may partition a bandwidth into multiple non-overlapping subbands. In some respects, the bandwidth may correspond to a bandwidth of a downlink channel of the transmitting device. In some aspects, the multiple non-overlapping subbands may be separated from each other by guard bands and/or the like. In some respects, another device, such as a network controller, can partition the bandwidth. In some respects, bandwidth partitioning may be specified in a standard or a technique specification.
[0177] [0177] As shown in Figure 15, in some aspects, process 1500 may include assigning different subbands of the multiple non-overlapping subbands to different wireless communication devices (block 1520). For example, the transmitting device (e.g., using controller/processor 240 and/or the like) may assign different subbands to (e.g., respective) different recipient devices. In some aspects, the transmitting device may allocate the different subbands based at least in part on the bandwidth capabilities of the receiving devices. For example, the transmitting device may assign each subband to a corresponding recipient device associated with a compatible bandwidth capacity.
[0178] [0178] As shown in Figure 15, in some aspects, the process 1500 may include forming a plurality of respective beams to different recipient devices, wherein each beam of the plurality of respective beams occupies a respective subband of the different assigned subbands. to different recipient devices (block 1530). For example, the transmitting device (e.g., using controller/processor 240, transmission processor 220, TX MIMO processor 230, MOD 232, antenna 234, and/or the like) may form a specific UE beam for each recipient device that is assigned to a subband. UE specific beams can occupy the corresponding subbands. In this way, the transmitting device reduces interference between downlink communications with different wireless communication devices.
[0179] [0179] With respect to the 1500 process, in some respects, the 1500 process may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0180] [0180] In some respects, a subband of the different subbands assigned to a particular recipient device of the different recipient devices corresponds to a maximum bandwidth capacity of the particular recipient device. In some aspects, the plurality of respective beams are formed using user equipment specific beamforming.
[0181] [0181] Although Figure 15 shows exemplary blocks of process 1500, in some aspects, process 1500 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 15. Additionally or alternatively, two or more blocks of process 1500 can be performed in parallel.
[0182] [0182] Figure 16 is a diagram illustrating an exemplary process 1600 performed, for example, by a transmitting device in accordance with various aspects of the present disclosure. Exemplary process 1600 is an example where a target device (e.g., a target device such as UE 120) performs FDM using UE-specific beamforming.
[0183] [0183] As shown in Figure 16, in some respects, the 1600 process may include transmitting to a transmitting device information that identifies a bandwidth capacity of the receiving device, where the bandwidth capacity corresponds to a subband of a beam bandwidth of the transmitting device (block 1610). For example, a recipient device (e.g., using controller/processor 280, broadcast processor 264, TX MIMO processor 266, MOD 254, antenna 252, and/or the like) may transmit information that identifies a bandwidth capability. bandwidth from the receiving device to a transmitting device. The receiving device may transmit the information so that the transmitting device can partition a subband of a bandwidth associated with the transmitting device for communication with the receiving device. For example, the bandwidth capacity may correspond to the bandwidth sub-band.
[0184] [0184] As shown in Figure 16, in some respects the 1600 process may include receiving a user-specific beam from the base station, where the user-specific beam of equipment is specific to the target device and occupies the sub - band, wherein the user equipment specific beam is one of a plurality of non-overlapping user equipment specific beams transmitted by the transmitting device in the beam bandwidth (block 1620). For example, the receiving device (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller/processor 280 and/or the like) may receive a specific UE beam from the transmitting device. The UE-specific beam may be specific to the target device, and may occupy the subband of the bandwidth associated with the target device. For example, the UE specific beam may be one of a plurality of non-overlapping UE specific beams (in frequency) transmitted by the transmitting device in the beam bandwidth. The receiving device can communicate based at least in part on information received on the specific UE beam.
[0185] [0185] With respect to the 1600 process, in some respects, the 1600 process may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere in this document .
[0186] [0186] Although Figure 16 shows exemplary blocks of process 1600, in some aspects, process 1600 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently from the blocks depicted in Figure 16. Additionally or alternatively, two or more blocks of process 1600 can be performed in parallel.
[0187] [0187] The aforementioned revelation provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form revealed. Modifications and variations are possible in light of the above disclosure or may be gained from practicing the aspects.
[0188] [0188] As used herein, the term component is intended to be interpreted broadly as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, or a combination of hardware and software.
[0189] [0189] Some aspects are described in this document together with limits. As used herein, satisfying a limit may refer to a value that is greater than the limit, greater than or equal to the limit, less than the limit, less than or equal to the limit, equal to the limit, not equal to the limit, and/or similar.
[0190] [0190] It will be apparent that the systems and/or methods described in this document may be implemented in different forms of hardware, firmware or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and/or methods is not limited to aspects. Thus, the operation and behavior of systems and/or methods have been described in this document without reference to specific software code, it is understood that software and hardware may be designed to implement systems and/or methods based on at least least in part in the description herein.
[0191] [0191] Although particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of possible aspects. In practice, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. While each independent claim listed below may depend directly on only one claim, the disclosure of possible aspects includes each dependent claim in combination with any other claim in the set of claims. An expression referring to "at least one of a list of items" refers to any combination of those items including unique members. As an example, "at least one of: a, b or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination of multiples of the same elements (e.g., aa, aa-a, aab, aac, abb, acc, bb, bbb, bbc, cc, and c-cc or any order of a, b and c).
[0192] [0192] No element, act or instructions used in this document should be interpreted as critical or essential unless otherwise described as such.
Furthermore, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more." Additionally, as used herein, it is intended The terms "set" and "group" are intended to include one or more items (e.g. related items, unrelated items, a combination of related and unrelated items, etc.), and may be used interchangeably with " one or more." Where only one term is intended, the term "one" or similar language is used.
Furthermore, as used herein, the terms "has", "have", "has" and/or the like are intended to be open terms.
Additionally, the term "based on" is intended to mean "based at least in part on" unless stated otherwise.

权利要求:
Claims (40)
[1]
1. Wireless communication method performed by a transmitting device comprising: receiving a first data stream and a second data stream; modulating the first data stream to create a first modulated data stream; modulating the second data stream to create a second modulated data stream; and multiplexing the first modulated data stream and the second modulated data stream into one symbol using either in-phase or quadrature carriers.
[2]
A method according to claim 1, wherein the transmitting device is further configured to add a first signature to the first data stream and a second signature to the second data stream, wherein the first signature and the second signature are added. for identifying a destination of the first data stream and the second data stream by at least one recipient device.
[3]
A method according to claim 2, wherein the first signature and the second signature are added after channel encoding the first data stream and the second data stream.
[4]
The method of claim 1, wherein the modulation is amplitude modulation.
[5]
A method according to claim 1, wherein the first data stream is associated with a first receiving device and the second data stream is associated with a second receiving device.
[6]
A method according to claim 1, wherein the first data stream is associated with a first receiving device and a second receiving device, wherein time division multiplexing is used to multiplex symbols associated with the first receiving device. and to the second recipient device for transmission.
[7]
7. A wireless communication method performed by a receiving device comprising: receiving a signal having a phased component and a quadrature component; identifying at least one symbol pertinent to the target device, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and demodulate the at least one symbol.
[8]
The method of claim 7, wherein the at least one symbol is identified based at least in part on the at least one symbol that is received in one of the in-phase component or the quadrature component.
[9]
The method of claim 7, wherein the at least one symbol is identified based at least in part on a signature specific to the recipient device associated with the at least one symbol.
[10]
The method of claim 7, wherein the at least one symbol is identified from a plurality of symbols in one of the in-phase component or the quadrature component, wherein the at least one symbol is multiplexed by division of time with the plurality of symbols.
[11]
11. A transmitter device for wireless communication comprising: a memory; and one or more processors operably coupled to the memory, the memory and the one or more processors configured to: receive a first data stream and a second data stream; modulating the first data stream to create a first modulated data stream; modulating the second data stream to create a second modulated data stream; and multiplexing the first modulated data stream and the second modulated data stream into one symbol using either in-phase or quadrature carriers.
[12]
The transmitting device according to claim 11, wherein the transmitting device is further configured to add a first signature to the first data stream and a second signature to the second data stream, wherein the first signature and the second signature are added to identify a destination of the first data stream and the second data stream by at least one recipient device.
[13]
A transmitter device according to claim 12, wherein the first signature and the second signature are added after channel encoding the first data stream and the second data stream.
[14]
A transmitter device according to claim 11, wherein the modulation is amplitude modulation.
[15]
The device of claim 11, wherein the first data stream is associated with a first receiving device and the second data stream is associated with a second receiving device.
[16]
The transmitting device of claim 11, wherein the first data stream is associated with a first receiving device and a second receiving device, wherein time division multiplexing is used to multiplex symbols associated with the first device. recipient and the second recipient device for transmission.
[17]
17. A recipient device for wireless communication comprising: a memory; and the one or more processors operably coupled to the memory, the memory and the one or more processors configured to: receive a signal having an in-phase component and a quadrature component; identifying at least one symbol pertinent to the target device, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and demodulate the at least one symbol.
[18]
A recipient device according to claim 17, wherein the at least one symbol is identified based at least in part on the at least one symbol that is received in one of the in-phase component or the quadrature component.
[19]
The recipient device according to claim 17, wherein the at least one symbol is identified based at least in part on a signature specific to the recipient device associated with the at least one symbol.
[20]
A recipient device according to claim 17, wherein the at least one symbol is identified from a plurality of symbols in one of the in-phase component or the quadrature component, wherein the at least one symbol is multiplexed. by division of time with the plurality of symbols.
[21]
21. A non-transient computer-readable medium that stores one or more instructions for wireless communication, wherein the one or more instructions comprise: one or more instructions which, when executed by one or more processors of a transmitting device, cause the one or more processors: receive a first data stream and a second data stream; modulate the first data stream to create a first modulated data stream; modulate the second data stream to create a second modulated data stream; and multiplexing the first modulated data stream and the second modulated data stream into one symbol using either in-phase or quadrature carriers.
[22]
A non-transient computer readable medium according to claim 21, wherein the one or more instructions, when executed by one or more processors, additionally cause the one or more processors to add a first signature to the first data stream and a second signature to the second data stream, wherein the first signature and the second signature are added to identify a destination of the first data stream and the second data stream by at least one recipient device.
[23]
A non-transient computer readable medium according to claim 22, wherein the first signature and the second signature are added after channel encoding the first data stream and the second data stream.
[24]
A non-transient computer readable medium as claimed in claim 21, wherein the modulation is amplitude modulation.
[25]
The non-transient computer readable medium of claim 21, wherein the first data stream is associated with a first receiving device and the second data stream is associated with a second receiving device.
[26]
The non-transient computer readable medium of claim 21, wherein the first data stream is associated with a first recipient device and a second recipient device, wherein time division multiplexing is used to multiplex symbols associated with the first receiving device and the second receiving device for transmission.
[27]
27. A non-transient computer-readable medium that stores one or more instructions for wireless communication, wherein the one or more instructions comprise: one or more instructions which, when executed by one or more processors of a transmitting device, cause the one or more processors: receive a signal that has a phase component and a quadrature component; identify at least one symbol pertinent to the target device, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and demodulate the at least one symbol.
[28]
A non-transient computer readable medium as claimed in claim 27, wherein the at least one symbol is identified based at least in part on the at least one symbol that is received at one of the in-phase component or the in-phase component. quadrature.
[29]
A non-transient computer readable medium according to claim 27, wherein the at least one symbol is identified based at least in part on a signature specific to the recipient device associated with the at least one symbol.
[30]
The non-transient computer readable medium of claim 27, wherein the at least one symbol is identified from a plurality of symbols in one of the in-phase component or the quadrature component, wherein the at least a symbol is time division multiplexed with the plurality of symbols.
[31]
31. Apparatus for wireless communication comprising: means for receiving the first data stream and the second data stream; means for modulating the first data stream to create a first modulated data stream; means for modulating the second data stream to create a second modulated data stream; and means for multiplexing the first modulated data stream and the second modulated data stream into one symbol using either in-phase or quadrature carriers.
[32]
An apparatus according to claim 31, further comprising means for adding a first signature to the first data stream and a second signature to the second data stream, wherein the first signature and the second signature are added for identifying a destination of the first data stream and the second data stream by at least one recipient device.
[33]
An apparatus according to claim 32, wherein the first signature and the second signature are added after channel encoding the first data stream and the second data stream.
[34]
An apparatus as claimed in claim 31, wherein the modulation is amplitude modulation.
[35]
An apparatus according to claim 31, wherein the first data stream is associated with a first receiving device and the second data stream is associated with a second receiving device.
[36]
An apparatus according to claim 31, wherein the first data stream is associated with a first receiving device and a second receiving device, wherein time division multiplexing is used to multiplex symbols associated with the first receiving device. and to the second recipient device for transmission.
[37]
37. Apparatus for wireless communication comprising: means for receiving a signal having an in-phase component and a quadrature component; means for identifying at least one symbol pertaining to the apparatus, wherein the at least one symbol is identified from at least one of the in-phase component or the quadrature component; and means for demodulating the at least one symbol.
[38]
An apparatus according to claim 37, wherein the at least one symbol is identified based at least in part on the at least one symbol that is received in one of the in-phase component or the quadrature component.
[39]
An apparatus according to claim 37, wherein the at least one symbol is identified based at least in part on a signature specific to the recipient device associated with the at least one symbol.
[40]
An apparatus as claimed in claim 37, wherein the at least one symbol is identified from a plurality of symbols in one of the in-phase component or the quadrature component, wherein the at least one symbol is multiplexed by division of time with the plurality of symbols.

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法律状态:
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