waveform design based on power spectral density parameters (psd)

专利摘要:
Wireless communication systems and methods related to communication on a frequency spectrum using interlaced frequency channels and non-interlaced frequency channels are provided. A first wireless communication device selects a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communication over a frequency spectrum. The first wireless communication device communicates, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure. The interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands interlacing with a second set of frequency bands in the frequency spectrum. The non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum.
公开号:BR112020000785A2
申请号:R112020000785-4
申请日:2018-06-28
公开日:2020-07-14
发明作者:Xiaoxia Zhang；Jing Sun；Tamer Kadous
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[001] [001] The present application claims the priority and benefit of US Non-Provisional Patent Application No. 16 / 020,400, filed on June 27, 2018, and US Provisional Patent Application No. 62 / 535,098, filed on 20 July 2017, which are incorporated herein by reference in their entirety as fully explained below and for all applicable purposes. TECHNICAL FIELD
[002] [002] This application refers to wireless communication systems and methods and, more particularly, communication over a frequency spectrum using interlaced frequency channels and non-interlaced frequency channels based on power spectral density (PSD) parameters. . INTRODUCTION
[003] [003] Wireless communications systems are widely implemented to provide various types of communication content, such as voice, video, packet data, messages, broadcast and so on. These systems may be able to support communication with multiple users by sharing the available system resources (eg, time, frequency and power). A wireless multiple access communications system can include a number of base stations (BSs), each simultaneously supporting communication to multiple communication devices, which may otherwise be known as user equipment (UE).
[004] [004] To satisfy the growing demands for expanded mobile broadband connectivity, wireless communication technologies are advancing from LTE technology to a new generation of next generation radio (NR) technology. NR can provide dynamic media sharing between network operators on a licensed spectrum, a shared spectrum and / or an unlicensed spectrum. For example, shared spectra and / or unlicensed spectra may include frequency bands at about 3.5 gigahertz (GHz), about 6 GHz and about 60 GHz.
[005] [005] Some shared spectra and / or unlicensed spectra may have certain PSD requirements. For example, the document of the American European Telecommunications Institute (ETSI) EN 301 893 V2.1.1 specifies various PSD limits for sub-6 GHz frequency bands and the draft document ETSI EN 302 567 V2.0.22 specifies a radiated power maximum equivalent isotropic (EIRP) and an EIRP density for 60 GHz frequency bands. Some other frequency bands, such as Citizen Broadband Radio Service (CBRS) bands at around 3.5 GHz, cannot restrict transmissions to a specific PSD limit. In general, different spectra may have different PSD requirements and / or different bandwidth requirements. Thus, during spectrum sharing, transmissions on such shared spectra and / or unlicensed spectra are necessary to satisfy PSD requirements and / or corresponding spectrum frequency occupation requirements. BRIEF SUMMARY OF SOME EXAMPLES
[006] [006] The following summarizes some aspects of this description to provide a basic understanding of the technology discussed. This summary is not an extensive overview of all contemplated features of the disclosure, and is not intended to identify key or critical elements of all aspects of the invention or to outline the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of the revelation in summary form, as a prelude to the more detailed description presented later.
[007] [007] For example, in one aspect of disclosure, a wireless communication method including selecting, by a first wireless communication device, a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communicate on a frequency spectrum; and communicating, by the first wireless communication device with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[008] [008] In an additional aspect of the disclosure, an apparatus including means for selecting a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communication over a frequency spectrum; and means for communicating, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[009] [009] In an additional aspect of the description, a computer-readable medium having program code registered in it, the program code including code to cause a first wireless communication device to select a waveform structure from among a interlaced frequency and a non-interlaced frequency structure for communication over a frequency spectrum; and code to cause the first wireless communication device to communicate, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[0010] [0010] Other aspects, characteristics and modalities of the present invention will become evident to those skilled in the art, by reviewing the description below of specific exemplary modalities of the present invention in conjunction with the attached figures. Although the features of the present invention can be discussed in relation to certain embodiments and figures below, all embodiments of the present invention can include one or more of the advantageous features discussed herein. In other words, although one or more modalities can be discussed as having certain advantageous characteristics, one or more of these characteristics can also be used according to the various modalities of the invention discussed here. Similarly, although exemplary modalities can be discussed below as a device, system, or method modalities, it should be understood that such exemplary modalities can be implemented in various devices, systems, and methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] [0011] Figure 1 illustrates a wireless communication network according to the modalities of the present disclosure.
[0012] [0012] Figure 2 is a block diagram of exemplary user equipment (UE) according to the modalities of the present invention.
[0013] [0013] Figure 3 is a block diagram of an exemplary base station (BS) according to the modalities of the present invention.
[0014] [0014] Figure 4 illustrates a frequency interlacing scheme according to the modalities of the present invention.
[0015] [0015] Figure 5 illustrates a frequency interlacing scheme according to the modalities of the present invention.
[0016] [0016] Figure 6 illustrates a band-dependent waveform selection scheme according to the modalities of the present invention.
[0017] [0017] Figure 7 is a signaling diagram of a specific network waveform selection method according to the modalities of the present invention.
[0018] [0018] Figure 8 is a signaling diagram of a UE-specific waveform selection method according to modalities of the present invention.
[0019] [0019] Figure 9 illustrates a random access transmission scheme according to the modalities of the present invention.
[0020] [0020] Figure 10 illustrates a transmission scheme of random access according to the modalities of the present invention.
[0021] [0021] Figure 1 illustrates a frequency interlacing scheme with reduced subcarrier spacing (SCS) according to the modalities of the present disclosure.
[0022] [0022] Figure 12 is a flowchart of a communication method with a waveform selection according to the modalities of the present invention. DETAILED DESCRIPTION
[0023] [0023] The detailed description presented below, in connection with the attached drawings, is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described here can be practiced. The detailed description includes specific details for the purpose of providing a complete understanding of the various concepts. However, it will be evident to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in the form of a block diagram in order to avoid obscuring such concepts.
[0024] [0024] The techniques described here can be used for various wireless communication networks such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), access orthogonal frequency division multiple (OFDMA), single carrier FDMA
[0025] [0025] The present application describes mechanisms for communicating on a frequency spectrum using interlaced frequency structure and non-interlaced frequency structure based on power spectral density (PSD) parameters. PSD parameters can be associated with a maximum PSD level or a range of permitted PSD levels in the frequency spectrum, a target transmission PSD level and / or a transmitter power utilization factor. An interlaced frequency structure can include multiple sets of interlaced frequency bands. For example, a transmission signal can be transmitted in a set of frequency bands spaced apart and interlaced with another set of frequency bands. The distribution of a transmission signal in a frequency domain can reduce the signal transmission PSD. For example, a frequency occupancy distribution factor of about 5 can allow a transmitter to increase transmission power by about 7 decibels (dB) while maintaining the same PSD level. Thus, the distribution in the frequency domain can improve the use of power. The described modalities can further improve the power utilization by employing time domain repetitions (for example, increasing the transmission duration) in conjunction with frequency interlacing. The described modalities can further improve the use of energy by reducing an SCS together with the frequency interlacing to allow a greater frequency distribution.
[0026] [0026] In one embodiment, the selection between an interlaced frequency structure and an uninterlaced frequency structure may be dependent on the band. For example, a BS or UE can select an interlaced frequency structure when communicating in a frequency band with a PSD requirement. Alternatively, a BS or UE can select a non-interlaced frequency structure when communicating in a frequency band without a PSD requirement. BS and UE may have prior knowledge of PSD requirements in various frequency bands before communicating in the frequency bands.
[0027] [0027] In one embodiment, the selection between an interlaced frequency structure and a non-interlaced frequency structure can be network specific. For example, a BS can signal an interlaced frequency structure for a frequency band with a PSD requirement. Alternatively, a BS can signal a non-interlaced frequency structure for a frequency band without a PSD requirement. Signaling can be a broadcast signal for all UEs on a network.
[0028] [0028] In one embodiment, the selection between an interlaced frequency structure and a non-interlaced frequency structure can be specific to the UF. For example, a BS can configure a power-limited UE with an interlaced frequency structure and configure a non-power-limited UE with a non-interlaced frequency structure. The configuration can be performed in a radio resource configuration (RRC) message.
[0029] [0029] In one modality, a BS can configure some random access resources with an interlaced frequency structure and some other random access resources with an non-interlaced frequency structure. A UE may choose to send a random access channel preamble (RACH) with interlaced or non-interlaced random access resources based on a downlink error measurement. In addition, the UE can perform power lift in a random access procedure between interlaced and non-interlaced RACH resources. For example, the UE can start transmitting a random access signal using a non-interlaced frequency resource with an initial transmit power. The UE can increase the transmission power for subsequent random access signal transmissions. The UE may switch to use an interlaced frequency resource when the transmit power is increased to a level that exceeds a maximum allowable PSD level in a frequency band of the non-interlaced frequency resources.
[0030] [0030] Aspects of the present patent application can provide several benefits. For example, the use of frequency interlacing can improve the use of power in a transmitter. Band-dependent, network-specific and / or UE-specific selections allow dynamic multiplexing of interlaced frequency channels and non-interlaced frequency channels based on PSD requirements and EU power utilization factors. Reduced TTI and / or SCS provides flexibility in programming with consideration of energy use. The described modalities can be suitable for use in any wireless communication network with any wireless communication protocol.
[0031] [0031] Figure 1 illustrates a wireless communication network 100 according to the modalities of the present invention. Network 100 includes BSs 105, UEs 115 and a central network 130. In some embodiments, network 100 operates over a shared spectrum. The shared spectrum can be licensed or partially licensed to one or more network operators. Access to the spectrum can be limited and can be controlled by a separate coordinating body. In some embodiments, network 100 may be an LTE or LTE-A network. In still other modalities, the network 100 can be a millimeter wave network (mmW), a new radio network (NR), a 5G network, or any other successor network for LTE. Network 100 can be operated by more than one network operator. Wireless resources can be divided and arbitrated between different network operators for coordinated communication between network operators over network 100.
[0032] [0032] BSs 105 can communicate wirelessly with UEs 115 through one or more BS antennas. Each BS 105 can provide communication coverage for a respective geographical coverage area 110. In 3 GPP, the term "cell" can refer to this specific geographical coverage area of a BS and / or a BS subsystem serving the coverage area , depending on the context in which the term is used. In this regard, a BS 105 can provide communication coverage for a macrocell, a peak cell, a femto cell, and / or other types of cells. A “macrocell usually covers a relatively large geographical area (for example, several kilometers in radius) and can allow unrestricted access by UEs with service subscriptions with the network provider. A peak cell can generally cover a relatively smaller geographical area and can allow unrestricted access by UEs with service subscriptions with the network provider. A femto cell can also generally cover a relatively small geographical area (for example, a house) and, in addition to unrestricted access, it can also provide access restricted by the UEs having “an association with the femto cell (eg UEs in a group closed subscribers (CSG), UEs for in-house users and the like). A BS for a macrocell can be referred to as a BS macro. A BS for a peak cell can be referred to as a Picto BS. A BS for a femto cell can be referred to as a BS femto or a domestic BS. In the example shown in Figure 1, BSs l105a, 105b and 105c are examples of macro BSs for coverage areas 110a, 110b and l110c, respectively. BSs 105d is an example of a BS peep or a BS femto for the 110d coverage area. As will be recognized, a BS 105 can support one or multiple cells (for example, two, three, four, and the like).
[0033] [0033] Communication links 125 shown on network 100 may include uplink (UL) transmissions from a UE 115 to a BS 105, or downlink (DL) transmissions from a BS 105 to a UE 115. UEs 115 can be dispersed throughout the network 100, and each UE 115 can be stationary or mobile. An UE 115 can also be referred to as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communications device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal a telephone device, a user agent, a mobile client, a customer, or some other suitable terminology. An UE 115 can also be a cell phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a portable device, a desktop computer, a laptop computer, a cordless phone, a device personal electronic device, a portable device, a personal computer, a wireless local circuit station (WLL), an Internet of Things (IoT) device, an Internet of Everything (TIoE) device, a machine-type communication device ( MTC), a device, an automobile, or the like.
[0034] [0034] BSs 105 can communicate with central network 130 and with each other. Core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. At least some of the BSs 105 (for example, which can be an example of an Evolved Node B (eNB), a Next Generation b node (gNB), or an access node controller (ANC) can interface with the network central 130 via backhaul links 132 (eg SI, S2, etc. 6 & e can perform radio configuration and programming for communication with UEs 115. In several instances, BSs 105 can communicate, directly or indirectly (for example, through core network 130), with each other through backhaul links 134 (e.g., Xl, X2, etc.), which can be wired or wireless communication links.
[0035] [0035] Each BS 105 can also communicate with a number of UEs 115 through a number of other BSs 105, where BS 105 can be an example of an intelligent radio head. In alternative configurations, several functions of each BS 105 can be distributed through several BSs 105 (for example, radio heads and access network controllers) or consolidated into a single BS 105.
[0036] [0036] In some implementations, network 100 uses orthogonal frequency division multiplexing (OFDM) in the downlink and single carrier frequency division multiplexing (SC-FDM) in UL. OFDM and SC-FDM divide the system's bandwidth into multiple orthogonal (K) subcarriers, which are also commonly referred to as tones, deposits or the like. Each subcarrier can be modulated with data. In general, the modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system's bandwidth. The system's bandwidth can also be divided into sub-bands.
[0037] [0037] In one embodiment, BSs 105 can allocate or program transmission resources (for example, in the form of time-frequency resource blocks) for DL AND UL transmissions On network 100. DL Refers to the transmission direction of a BS 105 for a UE 115, while UL Refers to the direction of transmission from a UE 115 to a BS
[0038] [0038] DL subframes and UL subframes can be further divided into several regions. For example, each DL or UL subframe can have predefined regions for transmitting reference signals, control information and data. Reference signals are predetermined signals that facilitate communications between BSs 105 and UEs 115. For example, a reference signal can have a particular pilot pattern or structure, where pilot tones can extend across an operational bandwidth or frequency band, each positioned at a predefined time and a predefined frequency. For example, a BS 105 can transmit cell-specific reference signals (CRSs) and / or channel status information reference signals (CSI-RSs) to allow a UE 115 to estimate a DL Channel. Similarly, an UE 115 can transmit sound reference signals (SRSs) to allow a BS 105 to estimate an UL channel. Control information can include resource assignments and protocol controls. The data can include protocol data and / or operational data. In some embodiments, BSs 105 and UEs 115 can communicate using self-contained subframes. A self-contained subframe can include a portion for DL communication and a portion for UL communication. A self-contained subframe can be centered by DL or centered by UL. A central DL subframe can include a longer duration for DL communication than UL communication. A UL-centered subframe can include a longer duration for UL communication than UL communication.
[0039] [0039] In one embodiment, a UE 115 attempting to access network 100 can perform an initial cell search by detecting a primary sync signal (PSS) from a BS 105. PSS can allow period timing synchronization and can indicate a physical layer identity value. The UE 115 can then receive a secondary synchronization signal (SSS). The SSS can enable radio frame synchronization, and can provide a cell identity value, which can be combined with the physical layer identity value to identify the cell. SSS can also allow the detection of a duplexed mode and a cyclic prefix length. Some systems, such as TDD systems, can transmit an SSS, but not a PSS. Both the PSS and the SSS can be located in a central part of a carrier, respectively.
[0040] [0040] After receiving the PSS and SSS, the UE
[0041] [0041] In some embodiments, UEs 115 can perform transmission power control (TPC) instead of transmitting at full power to allow multiplexing in a frequency domain, multiplexing in a spatial domain, and / or managing interference. For example, an UE 115 can reduce the transmission power to a minimum enough power to maintain a communication link 125 of a certain quality.
[0042] [0042] In one embodiment, network 100 can operate through a shared channel, which can include a licensed spectrum, a shared spectrum and / or an unlicensed spectrum, and can support dynamic media sharing. A BS 105 or UE 115 can reserve a transmission opportunity (TXOP) on a shared channel by transmitting a backup signal before transmitting data on the TXOP. Other BSs 105 and / or other UEs 115 can listen to the channel and refract them from accessing the channel during the detection of the Backup signal. In some embodiments, BSs 105 and / or UEs 115 can coordinate with one another to perform interference management for further improvements in spectrum usage.
[0043] [0043] In one embodiment, network 100 can operate over several frequency bands, for example, in frequency bands between about 2 GHz to about 60 GHz. Different frequency bands may have different PSD requirements. As described above, ETSI EN 301 893 V2.1.1 specifies PSD requirements for various sub-6 GHz bands. For example, the frequency band between about 5150 MHz and about 5350 MHz may have a PSD level permissible maximum of about 10 dBm / MHz with TPC. The frequency band between about 5250 MHz and about 5350 MHz can have a maximum permissible PSD level of about 7 dBm / MHz Without TPC. The frequency band between about 5150 MHz and about 5250 MHz can have a maximum permissible PSD level of about 10 dBm / MHz without TPC. The frequency band between about 5470 MHz and about 5725 MHz can have a maximum allowable PSD level of about 17 dBm / MHz with TPC and a maximum allowed PSD level of about 14 dBm / MHz without TPC. The drawing document ETSI EN 302 567 V2.0.22 specifies a maximum EIRP and an EIRP density for 60 GHz bands. For example, a 60 GHz band may allow an EIRP density of around 13 dBm / MHz and an EIRP of about 40 dBm.
[0044] [0044] To satisfy a certain limit of PSD in a frequency spectrum, a transmitter (for example, BSs 105 and UEs 115) can employ frequency interlacing to spread a transmission signal across a wider bandwidth. For example, a transmitter can transmit a signal across multiple narrow frequency bands spaced from one another in a frequency bandwidth at a higher power than transmitting the signal over contiguous frequencies. In one embodiment, BSs 105 and UEs 115 can communicate over the various frequency bands by selecting between an interlaced frequency waveform and an uninterlaced frequency waveform depending on the requirements of the PSD In the frequency spectra and / or in the power utilization factors of the UEs 115. Mechanisms For selecting between the interlaced frequency waveform and the non-interlaced frequency waveform are described in more detail here.
[0045] [0045] Figure 2 is a block diagram of an exemplary UE 200 in accordance with embodiments of the present invention. UE 200 can be UE 115 as discussed above. As shown, the UE 200 may include a processor 202, a memory 204, a waveform selection module 208, a transceiver 210 including a modem subsystem 212 and a radio frequency (RF) unit 214, and one or more antennas 216 These elements can be in direct or indirect communication with each other, for example, through one or more buses.
[0046] [0046] Processor 202 may include a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a controller, a field programmable port device (FPGA), another hardware device, a firmware device, or any combination thereof configured to perform the operations described here. Processor 202 may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
[0047] [0047] Memory 204 may include a cache memory (for example, a processor 202 cache memory), random access memory (RAM), Magnetostrictive RAM (MRAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, solid state memory device, hard disk drives, other forms of volatile and non-volatile memory, or a combination of different types of memory. In one embodiment, memory 204 includes a non-transitory, computer readable medium. Memory 204 can store instructions 206. Instructions 206 can include instructions that, when executed by processor 202, cause processor 202 to perform the operations described here with reference to UEs 115 in connection with the modalities of the present description. Instructions 206 can also be referred to as a code. The terms "instructions" and "code" must be interpreted widely to include any type of computer-readable statement (s). For example, the terms "instructions" and "code" can refer to one or more programs, routines, subroutines, functions, procedures, etc. "instructions" and "code" can include a single computer-readable statement or many computer-readable statements.
[0048] [0048] The waveform selection module 208 can be implemented via hardware, software, or combinations thereof. For example, the waveform selection module 208 can be implemented as a processor, circuit and / or instructions 206 stored in memory 204 and executed by processor 202. The waveform selection module 208 can be used for several aspects For example, waveform selection module 208 is configured to select a waveform structure between an interlaced frequency structure and a non-interlaced frequency structure for communication on a frequency spectrum, receiving waveform from BSs, such as BSs 105, and / or perform power lift with or without frequency interlacing for initial network accesses. The waveform selection module 208 can perform the selection based on previous knowledge of a PSD requirement (for example, a limit of
[0049] [0049] As shown, transceiver 210 can include modem subsystem 212 and RF unit 214. Transceiver 210 can be configured to communicate bidirectionally with other devices, such as BSs
[0050] [0050] The RF 214 unit can supply the modulated and / or processed data, for example, data packets (or, more generally, data messages that may contain one or more data packets and other information), to the 216 antennas for transmission to one or more other devices. This can include, for example, the transmission of communication signals using an interlaced frequency structure and / or a non-interlaced frequency structure according to the modalities of the present disclosure. Antennas 216 can additionally receive data messages transmitted from other devices. Antennas 216 can provide the received data messages for processing and / or demodulation at transceiver 210. Antennas 216 may include multiple antennas of similar or different designs to support multiple transmission links. The RF 214 unit can configure antennas 216.
[0051] [0051] Figure 3 is a block diagram of an exemplary BS 300 according to the modalities of the present invention. The BS 300 can be a BS 105 as discussed above. As shown, BS 300 can include a processor 302, a memory 304, a waveform selection module 308, a transceiver 310 including a modem subsystem 312 and an RF unit 314, and one or more antennas 316. These elements can be in direct or indirect communication with each other, for example, through one or more buses.
[0052] [0052] Processor 302 can have several characteristics like a processor of the specific type. For example, these can include a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination of them configured to perform the operations described here. The processor 302 can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core or any other such configuration.
[0053] [0053] Memory 304 may include a cache memory (for example, a 302 processor cache memory), RAM, MRAM, ROM, PROM, EPROM, EEPROM, instant memory, a solid state memory device, one or more drives hard disk, memorial-based layouts, other forms of volatile and non-volatile memory, or a combination of different types of memory. In some embodiments, memory 304 may include a non-transitory, computer readable medium. Memory 304 can store instructions 306. Instructions 306 can include instructions that, when executed by processor 302, cause processor 302 to perform operations described here. Instructions 306 can also be referred to as code, which can be interpreted widely to include any type of computer-readable statement (s) as discussed above with reference to figure 3
[0054] [0054] The waveform selection module 308 can be implemented via hardware, software, or combinations thereof. For example, the waveform selection module 308 can be implemented as a processor, circuit and / or instructions 306 stored in memory 304 and executed by processor 302. The waveform selection module 308 can be used for several aspects of the present invention. For example, the waveform selection module 308 is configured to select a waveform structure between an interlaced frequency structure and a non-interlaced frequency structure for communication on a frequency spectrum, determining waveform settings for different frequency spectra and / or Different UEs such as UEs 115, configure resources with different waveform configurations for initial network access and / or transmit waveform configurations for UEs. The waveform selection module 308 can perform selection and / or determination based on previous knowledge of a PSD requirement (for example, a PSD limit or a range of permitted PSD levels) across a frequency spectrum and / or power headroom available in UEs, as described in more detail here.
[0055] [0055] As shown, transceiver 310 can include modem subsystem 312 and RF unit 314. Transceiver 310 can be configured to communicate bidirectionally with other devices, such as UEs 115 and / or another central network element. The modem subsystem 312 can be configured to modulate and / or encode data according to the MCS, for example, an LDPC encoding scheme, a turbo encoding scheme, a convolutional encoding scheme, a digital beam formation scheme, etc. The RF 314 unit can be configured to process (for example, perform analog to digital or digital to analog conversion, etc.) modulated / encoded from the modem subsystem 312 (in outbound transmissions) or from transmissions originating from another source such such as a UE 115 or 200. The RF Unit 314 can be additionally configured to carry out analog beam formation in conjunction with digital beam formation. Although shown as integrated together in transceiver 310, modem subsystem 312 and RF unit 314 can be separate devices that are coupled together in BS 105 to allow BS 105 to communicate with other devices.
[0056] [0056] The RF 314 unit can supply the modulated and / or processed data, for example, data packets (or, more generally, data messages that can contain one or more data packets and other information), to the 3l6 antennas for transmission to one or more other devices. This may include, for example, transmission of information to complete connection to a network and communication with a connected UE 115 or 200, in accordance with the modalities of the present disclosure. The 316 antennas can additionally receive data messages transmitted from other devices and provide the received data messages for processing and / or demodulation on transceiver 310. The 316 antennas can include multiple antennas of similar or different designs to support multiple connections transmission.
[0057] [0057] Figures 4 and 5 illustrate several frequency interlacing mechanisms to distribute a transmission or resource allocation across a frequency spectrum to improve energy use. In Figures 4 and 5, the x axes represent time in some constant units, and the y axes represent frequency in some constant units.
[0058] [0058] Figure 4 illustrates a 400 frequency interlacing scheme according to modalities of the present invention. Scheme 400 can be employed by BSs such as BSs 105 and 300 and UEs such as UEs 115 and 200 to communicate over a frequency spectrum
[0059] [0059] Each interleave 408 can include ten islands 406 evenly spaced over the frequency spectrum 402. The interlaces are shown as 408;, (9) to 408661, where M is a positive integer depending on several factors, as described in greater detail. details here. In one embodiment, interlacing 4087; (x) can be assigned to one UE and interlacing 4081: (x: 1) can be assigned to another UE, where k can be between 0 and M -2.
[0060] [0060] A group of M islands located 406, one of each interleaving 408, forms a 404 cluster. As shown, interlaces 4087, 4086w41, form ten clusters 404c (0) y 404069). Each island 406 includes an RB 410 Thus, interlaces 408 have a granularity at an RB level. RBs 410 are indexed from 0 to 11. Each RB 410 can cover about twelve subcarriers 412 in frequency and a time period 414. Time period 414 can cover any suitable number of Symbols
[0061] [0061] Although the 400 scheme is illustrated with ten 404 clusters, the number of clusters may vary depending on the bandwidth of the frequency spectrum 402, the granularity of the interlaces 408 and / or the SCS of the subcarriers 412. In one embodiment, the frequency spectrum 402 can have a bandwidth of about 20 megahertz (MHz) and each subcarrier 412 can cover about 15 kHz in frequency. In such an embodiment, the frequency spectrum 402 may include about ten interlaces 408 (for example, M = 10). For example, an allocation may include a 408 interlaced having ten RBs distributed
[0062] [0062] In another embodiment, the frequency spectrum 402 can have a bandwidth of about 10 MHz and each subcarrier 412 can cover about 15 kHz in frequency. In such an embodiment, the frequency spectrum 402 may include about five interlaces 408 (for example, M = 5). Similarly, an allocation can include a 408 interlacing that has ten RBs distributed. The interlaced allocation with the ten distributed RBs may allow better use of power than an allocation with a single RB or ten RBs located at the same level of PSD
[0063] [0063] In another embodiment, the frequency spectrum 402 can have a bandwidth of about 20 MHz and each subcarrier 412 can cover about 30 kHz in frequency. In such an embodiment, the frequency spectrum 402 may include about five interlaces 408 (for example, M = 5). Similarly, an allocation can include a 408 interlacing that has ten RBs distributed. The interlaced allocation with the ten distributed RBs may allow better use of power than an allocation with a single RB or ten RBs located at the same PSD level.
[0064] [0064] The use of frequency interlacing for an allocation in the frequency spectrum 402 allows a transmitter to transmit at a higher power level than when an allocation occupies contiguous frequencies. As an example, the frequency spectrum 402 may have a maximum permissible PSD level of about 13 decibel-milliwatts per megahertz (dBm / MHz) and a transmitter (for example, UEs 115 and 200) may have a power amplifier ( PA) capable of transmitting at about 23 dBm. The distribution of the frequency occupation of an allocation with five 404 clusters can allow the transmitter to transmit at around 20 dBm (for example, with a power boost of around 7 dB) while maintaining a PSD level of around 13 dBm / MHz. The frequency occupation distribution of an allocation with ten 404 clusters can allow the transmitter to transmit at a total power of around 23 dBm (for example, with a power boost of around 10 dB) while maintaining a PSD level of about 13 dBm / MHz. Thus, the use of frequency interlacing for resource allocation can provide better utilization of power.
[0065] [0065] In one embodiment, the 400 scheme can be applied to One PUCCH, one PUSCH and one Physical Random Access Channel (PRACH) to provide a power pulse on a transmitter. For example, a UE can transmit a random access preamble to a BS during initial network access via a PRACH using a 408 interleave, transmit UL control information to a BS via a PUCCH using a 408 interleave, and / or transmit UL data via a PUSCH using a 408 interlacing. In one embodiment, scheme 400 can be applied to spectrum sharing, where a UE or BS can transmit an average reserve signal using an interlaced frequency structure, for example , a 408 interlacing, to improve the detection performance of the medium.
[0066] [0066] Figure 5 illustrates a frequency interlacing scheme 500 according to modalities of the present invention. Scheme 500 can be employed by BSs such as BSs 105 and 300 and UEs such as UEs 115 and 200 to communicate through frequency spectrum 402. Frequency spectrum 402 can have a bandwidth of about 20 MHz and an SCS of around 60 kHz. Scheme 500 can be substantially similar to scheme 400. For example, scheme 500 can allocate resources in interleaving units 508, shown as 508i (0) to 508 (4). However, each interleave 508 can include five islands 506 evenly spaced over frequency spectrum 402 instead of ten islands 406 evenly spaced over frequency spectrum 402 as in scheme 400. A group of five islands located 506, one from each interlayer 508 , forms a 504 cluster As shown, interlaces 508i (0) to 508 (4) form five clusters 504c (0) to 504c (5 each Island 506 includes an RB 510. Each RB 510 covers twelve 512 subcarriers in frequency and a period time 514. Each subcarrier 512 can cover about 60 kHz in frequency, time period 514 can include any suitable number of OFDM symbols.
[0067] [0067] The five interlocks 508 can allow a transmitter to have a power boost of about 7 dB. As an example, the frequency spectrum 402 may have a maximum permissible PSD level of about 10 dBm / MHz. The distribution of an interleaving allocation across five islands 506 or five clusters 504 allows a transmitter to transmit at around 17 dBm. To further improve power utilization, Scheme 500 can apply time domain repetitions or TTI grouping, where an allocation can jump from one TTI to another TTI. For example, time period 514 can include two TTIS (for example, about 28 OFDM symbols) instead of a TTI (for example, about 14 OFDM symbols) as in scheme 402. Such a grouping of TTI may allow the transmitter further increase the transmission power to about 20 dBm (for example, an increase of about 3 dB).
[0068] [0068] Although the 400 and 500 schemes illustrate resource allocations at a level of RB granularity, the 400 and 500 schemes can alternatively be configured to allocate resources at a different granularity to achieve similar functionality. For example, islands 406 or 506 can be defined in frequency units of about 4 subcarriers instead of twelve subcarriers to provide better utilization of power.
[0069] [0069] Figures 6 to 8 illustrate several mechanisms for selecting between an interlaced frequency structure and an non-interlaced frequency structure for communication on a frequency spectrum such as frequency spectrum 402.
[0070] [0070] Figure 6 illustrates a band-dependent waveform selection scheme 600 according to the modalities of the present description. The x-axis represents the frequency in some constant units. Scheme 600 can be employed by BSs such as BSs 105 and 300 and UVEs such as UEs 115 and 200 to determine whether to employ an interlaced frequency structure or an non-interlaced frequency structure for communications on a frequency spectrum based on in a Frequency Spectrum PSD parameter. Scheme 600 can employ - similar mechanisms as described in schemes 400 and 500 with respect to Figures 4 and 5, respectively, when using an interlaced frequency structure. In Scheme 600, BSs and UEs may have prior knowledge of PSD requirements in various frequency bands 610 and 620. Frequency bands 610 and 620 can be located at any suitable frequencies.
[0071] [0071] As an example, frequency band 610 may have a PSD limit, while frequency band 620 may not have a PSD limit. To satisfy the PSD limit in the 610 frequency band, a BS can communicate with a UE in the 610 frequency band using an interlaced frequency structure (for example, a 408.6 or 508: 6wW interlacing). Since the frequency band 620 does not have a PSD limit, a BS can communicate with a UE in the frequency band 620 using a non-interlaced frequency structure (for example, including contiguous frequencies).
[0072] [0072] Figure 7 is a signaling diagram of a specific network 700 waveform selection method according to the modalities of the present invention. Method 700 is implemented between a BS, a UE a, and a UE B a BS can be similar to BSs 105 and 300. UEs A and B can be similar to UEs 115 and 200. the steps of method 700 can be performed by computing devices (for example, a processor, processing circuit, and / or other suitable component) from BS and Dos UEs A and B. As illustrated, method 700 includes a number of steps listed, but modalities of method 700 may include additional steps before, after, and between The steps listed. In some embodiments, one or more of the steps listed - can be omitted or performed in a different order.
[0073] [0073] In step 710, BS transmits a configuration that indicates waveform structures for various frequency bands (for example, frequency bands 610 and 620). For example, the configuration can indicate an interlaced frequency structure (for example, a 408.6 interlacing, or 508: (% wW) for a frequency band with a PSD limit and can indicate an uninterlaced frequency structure (for example, example, including contiguous frequencies) for a frequency band Without a PSD limit In one embodiment, BS can broadcast the configuration in One SIB to all UEs (for example, including UEs A and B) over a network (for example example, network 100).
[0074] [0074] In step 720, BS can communicate with UE a and UE B according to the configuration. UE à or UE B can determine whether to use an interlaced frequency structure or a non-interlaced frequency structure for communication with the BS based on the waveform structures indicated in the received configuration. When the waveform structure for a frequency band indicates an interlaced frequency structure, the BS and the UE can communicate with each other using similar mechanisms as in the 400 or 500 scheme.
[0075] [0075] Figure 8 is a signaling diagram of a specific EU 800 waveform selection method, according to the modalities of the present invention. Method 800 is implemented between a BS, a UE a, and a UE B a BS can be similar to BSs 105 and 300. UEs A and B May be similar to UEs 115 and 200. Steps 800 method can be performed by computing devices (for example, a processor, processing circuit, and / or other suitable component) from BS and UEs A and B. As illustrated, method 800 includes a number of steps listed, but The modalities of method 800 may include additional steps before, after, and between the steps listed. In some embodiments, one or more of the steps listed - can be omitted or performed in a different order.
[0076] [0076] Method 800 can configure or designate transmissions per UE with an interlaced frequency structure or a non-interlaced frequency structure based on power headroom reports received from the UEs. For example, when a UE is limited by power, the BS can program a transmission (for example, a PUSCH transmission) to the UE with an interlaced frequency structure. A UE is limited by power when the transmission power required for a UL transmission on a specific communication channel or link exceeds the available transmission power of the UE. Alternatively, when a UE is not limited by power, BS can program a transmission to the UE with a non-interlaced frequency structure.
[0077] [0077] In step 810, the BS transmits a configuration a indicating a waveform structure to the UE a, for example, the UE a is limited by power and thus the waveform structure can indicate a structure of interlaced frequency (for example, a 408 interlacing; or 508: 6)) .-
[0078] [0078] In step 820, the BS transmits a configuration B indicating a waveform structure to the UE B, for example, the UE B is not limited by power, and thus the waveform structure may indicate a structure of non-interlaced frequency (for example, including contiguous frequencies).
[0079] [0079] In step 830, BS can communicate with UE A based on configuration A, for example, using the interlaced frequency structure.
[0080] [0080] In step 840, BS can communicate with UE B based on configuration B, for example, using the non-interlaced frequency structure.
[0081] [0081] In one embodiment, BS can select either an interlaced frequency structure or a non-interlaced frequency structure for a UE based on a UE power headroom and a PSD parameter (for example, a PSD limit or a range of Permissible PSD levels) of a frequency band. For example, BS can program the UE a with a frequency structure interlaced in one frequency band and a frequency structure not interlaced in another frequency band. Alternatively, BS can program the UE a with a frequency structure interlaced in one period of time and a frequency structure not interlaced in another period of time.
[0082] [0082] Figures 9 and 10 illustrate several mechanisms for configuring random access resources with an interlaced frequency structure and an uninterlaced frequency structure.
[0083] [0083] Figure 9 illustrates a 900 random access transmission scheme according to the modalities of the present description. The x-axis represents the frequency in some constant units. Scheme 900 can be employed by BSs such as BSs 105 and 300 and UEs such as UEs 115 and 200. In scheme 900, a BS can configure multiple sets of random access resources in different frequency bands. For example, a set of random access resources 910 can be located in a frequency band 902 and can have an interlaced frequency structure (for example, a 408.6 or 508: 6wan interleave). Another set of random access resources 920 may be located in a frequency band 904 and may have a non-interlaced frequency structure (for example, including contiguous frequencies). A UE can autonomously select resources from resources 910 in frequency band 902 or from resources 920 in frequency band 904 for the transmission of a random access signal. BS can monitor a random access signal on resources 910 based on the interlaced frequency structure and on resources 920 based on the non-interlaced frequency structure.
[0084] [0084] In one mode, the selection can be based on a measurement of loss of path DL. When a UE is limited by power, the UE can select resources from the 910 resources with the interlaced frequency structure for better use of power. For example, the UE can transmit a random access preamble on an interlaced channel of frequency similar to interleaves 408 and
[0085] [0085] In one mode, a UE can perform the power lift during a random access procedure. For example, at the start of a random access procedure, the UE may select a resource from resources 920 with the non-interlaced frequency structure for a transmission of random access preamble. When no random access response is received, the UE can increase the transmission power for a subsequent random access transmission. When the transmit power reaches a maximum permissible PSD level in frequency band 904, the UE can switch to select a resource from resources 910 with the frequency structure interlaced for a subsequent random access preamble transmission.
[0086] [0086] Figure 10 illustrates a random access transmission scheme 1000 according to the modalities of the present invention. The x-axis represents time in some constant units. The y-axis represents the frequency in some constant units. Scheme 1000 can be employed by BSs such as BSs 105 and 300 and UEs such as UEs 115 and 200. Scheme 1000 can be substantially similar to Scheme 900. However, a BS can configure multiple sets of random access resources in different time periods instead of different frequency bands as in scheme 900. For example, a set of random access resources 1010 can be located in a time period 1002 and can have an interlaced frequency structure (for example, a interlacing 408.66 or 508: 6w). Another set of random access resources 1020 can be located in a time period 1004 and can have a non-interlaced frequency structure (for example, including contiguous frequencies). In one embodiment, resources 1010 and 1020 are located in the same frequency band 1001.
[0087] [0087] Similar to scheme 900, a UE can autonomously select resources from resources 1010 in time period 1002 or from resources 1020 in time period 1004 for the transmission of a random access signal. The selection can be based on a measurement of path loss DL, a power utilization factor (for example, a power headroom) from the UE and / or A transmission power used for the transmission of random access preamble as described in scheme
[0088] [0088] Figure 1 illustrates an 1100 frequency interlacing scheme with a reduced SCS according to the modalities of the present description. Scheme 1100 can be employed by BSs such as BSs 105 and 300 and UEs such as UEs 115 and 200 to communicate across a 402 frequency spectrum. Scheme 1100 can be substantially similar to schemes 400 and 500 but can allocate resources in a reduced SCS.
[0089] [0089] The frequency spectrum 402 can have a bandwidth of about 20 MHz and an SCS of about 60 kHz. Thus, the frequency spectrum 402 includes twenty-five RBs 510 (for example, indexed from 0 to 24). As described above with respect to Figure 5, when allocating resources in interleaving units 508 at a level of RB granularity, the 500 scheme can provide a power boost of about 7 dB without the TTI cluster. Instead of further improving power utilization using TTI clustering, the 1100 scheme applies frequency interlacing in a reduced SCS.
[0090] [0090] Scheme 1100 divides each 512 subcarrier into about four 1112 subcarriers. Thus, each 1112 subcarrier exceeds about 15 kHz. For example, subcarrier 512 indexed O is divided into four subcarriers 1112 indexed 0 to 3, subcarrier 512 indexed 1 is divided into four subcarriers 1112 indexed 4 to 7, and subcarrier 512 indexed 2 is divided into four subcarriers 1112 indexed 8 to 11. The group of 12 subcarriers 1112 forms an RB 1110.
[0091] [0091] Similar to schemes 400 and 500, scheme 1100 can allocate resources in interleaving units similar to interlaces 408 and 508. For example, each interleaving can include about ten islands 1106 evenly spaced over the spectrum 402, where each island 1106 includes an RB 1110. Thus, the frequency spectrum can include about ten interlaces. The distribution of an allocation frequency occupation on ten islands 1106 can provide a power boost of about 10 dB. Alternatively, scheme 1100 can divide each subcarrier 512 into about two subcarriers, each spanning around 30 kHz. The Reduced SCS can distribute an allocation in a frequency domain to allow a transmitter to transmit at a higher power while maintaining a certain level of PSD.
[0092] [0092] In one mode, SCS Reduced can increase computational complexity. For example, under normal operation with a bandwidth of 20 MHz and an SCS of around 60 kHz, a fast 512 point De Fourier transform (FFT) can be applied. However, reducing the SCS to about 15 kHz, an FFT of 2048 points may be necessary. the larger FFT size can increase computational complexity. One approach to reduce computational complexity is to segment the 20 MHz bandwidth into about four segments and apply four 512-point FFTs, one for each segment.
[0093] [0093] In one embodiment, communications on a frequency spectrum below about 6 GHz can use an interlaced frequency waveform structure and communications on a frequency spectrum above about 6 GHz can use a shape structure interlaced frequency waveform and a non-interlaced frequency waveform structure. For example, schemes 400, 500 and 1100 described with respect to 4, 5 and 11, respectively, can be used for communications based on interlaced frequency. Schemes 600, 900 and 1000 and methods 700 and 800 described with respect to Figures 6, 9, 10, 7 and 8, respectively, can be used to select between the interlaced frequency waveform structure and the shape structure frequency waveform for communications above 6 GHz.
[0094] [0094] Figure 12 is a flow chart of a communication method 1200 with a waveform selection according to the modalities of the present invention. Method 1200 steps can be performed by a computing device (for example, a processor, processing circuit, and / or other suitable component) of a wireless communication device, such as BSs 105 and 300 and UEs 115 and 200. Method 1200 may employ similar mechanisms as in schemes 400,500,600, 900 and 1000 and methods 700 and 800 described with respect to Figures 4,5,6, 9, 10, 7 and 8, respectively. As illustrated, method 1200 includes a number of steps listed, but the modalities of method 1200 may include additional steps before, after, and between the steps listed. In some embodiments, one or more of the steps listed may be omitted or performed in a different order.
[0095] [0095] In step 1210, method 1200 includes selecting, by a first wireless communication device, a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communication in a frequency spectrum (for example, example, frequency spectrum 402). The interlaced frequency structure can include at least a first set of frequency bands (e.g., the 408; ,, or 508: 6 interlacing)) in the spectrum. The first set of frequency bands interleaves with a second set of frequency bands (for example, the 4087 (1) or 5081 (1) interlacing) in the frequency spectrum. The non-interlaced frequency structure can include one or more contiguous frequency bands, RBs, or in the frequency spectrum. The selection can be band-dependent, as described in scheme 600, network-based, as described in method 700, or specific to UE, as described in method 800.
[0096] [0096] In step 1220, method 1200 includes the communication, by the first wireless communication device with a second wireless communication device, of a communication signal in the frequency spectrum based on the selected waveform structure.
[0097] [0097] Information and signals can be represented using any one of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and chips that can be referred to throughout the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0098] [0098] The various blocks and illustrative modules described with respect to the disclosure here can be implemented or executed with a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete port or transistor logic, components of discrete hardware, or any combination thereof designed to perform the functions described here. A general purpose processor can be a microprocessor, but in the alternative system, the processor can be any conventional processor, controller, microcontroller or state machine. A processor can also be implemented as a combination of computing devices (for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors together with a DSP core, or any other such configuration).
[0099] [0099] The functions described here can be implemented in hardware, software executed by a processor, firmware, or any combination thereof.
[00100] [00100] Additional embodiments of the present invention include a wireless communication method comprising selecting, by a first wireless communication device, a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communicating on a frequency spectrum; and communicating, by the first wireless communication device with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[00101] [00101] In some embodiments, where the interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands intertwine with a second set of frequency bands in the frequency spectrum , and where the non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum. In some modalities, the selection is based on a power spectral density (PSD) parameter of the frequency spectrum. In some embodiments, where the PSD parameter is associated with a PSD requirement in the frequency spectrum, and where the selection includes determining whether the frequency spectrum has the PSD requirement; and selecting the interlaced frequency structure as the waveform structure when determining that the frequency spectrum has the PSD requirement. In some modalities where the PSD parameter is associated with a PSD requirement in the frequency spectrum, where the selection is based on a first frequency band having the PSD requirement and a second frequency band not having the PSD requirement, and wherein communication includes the communication of a first communication signal with the frequency structure interlaced in the first frequency band; and communicating a second communication signal with the frequency structure not interlaced in the second frequency band. In some modalities, the method still comprises transmitting, through the first wireless communication device, a configuration indicating the waveform structure for communication in the frequency spectrum.
[00102] [00102] Additional embodiments of the present invention include an apparatus comprising a processor configured to select a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communication over a frequency spectrum; and a transceiver configured to communicate, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[00103] [00103] In some embodiments, where the interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands intertwine with a second set of frequency bands in the frequency spectrum , and where the non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum.
[00104] [00104] Additional embodiments of the present invention include a computer-readable medium having program code written to it, the program code comprising "code to cause a first wireless communication device to select a waveform structure from among a interlaced frequency structure and a non-interlaced frequency structure for communication over a frequency spectrum; and code to cause the first wireless communication device to communicate, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[00105] [00105] In some embodiments, where the interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands intertwine with a second set of frequency bands in the frequency spectrum , and where the non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum. In some embodiments, where the code to make the first wireless communication device select the waveform structure is additionally configured to select the waveform structure based on a power spectral density (PSD) parameter of the frequency spectrum.
[00106] [00106] Additional embodiments of the present invention include an apparatus comprising means for selecting a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communication over a frequency spectrum; and means for communicating, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[00107] [00107] In some embodiments, where the interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands intertwine with a second set of frequency bands in the frequency spectrum , and where the non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum. In some embodiments, the means for selecting the waveform structure is further configured to select the waveform structure based on a power spectral density (PSD) parameter of the frequency spectrum. In some embodiments, where the PSD parameter is associated with a PSD requirement in the frequency spectrum, and where the means for selecting the waveform structure is additionally configured to select the waveform structure by determining whether the waveform frequency has the PSD requirement; and selecting the interlaced frequency structure as the waveform structure when determining that the frequency spectrum has the PSD requirement.
[00108] [00108] As those skilled in the art now realize and depending on the specific application at hand,
many modifications, substitutions and variations can be made in and to the materials, apparatus, configurations and methods of use of the devices of the present invention without departing from the spirit and scope of the same.
In view of this, the scope of the present invention should not be limited to that of the particular modalities illustrated and described here, since they are merely by way of some examples, but, instead, they must be fully commensurate with those of the attached claims and their functional equivalents.

权利要求:
Claims (51)
[1]
1. Wireless communication method, comprising: selecting, by a first wireless communication device, a waveform structure between an interlaced frequency structure and a non-interlaced frequency structure for communication in a frequency spectrum; and communication, by the first wireless communication device with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[2]
A method according to claim 1, wherein the interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands interlacing with a second set of frequency bands in the frequency spectrum, and where the non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum.
[3]
3. Method according to claim 1, in which the selection is based on a power spectral density (PSD) parameter of the frequency spectrum.
[4]
4, Method according to claim 3, wherein the PSD parameter is associated with a PSD requirement in the frequency spectrum, and the selection includes: determining whether the frequency spectrum has the PSD requirement; and selecting the interlaced frequency structure as the waveform structure when determining that the frequency spectrum has the PSD requirement.
[5]
5. Method according to claim 3, in which the PSD parameter is associated with a PSD requirement in the frequency spectrum, in which the selection is based on a first frequency band having the PSD requirement and a second frequency band frequency not having the PSD requirement, and in which the communication includes: communicating a first communication signal with the frequency structure interlaced in the first frequency band; and communicating a second communication signal with the frequency structure not interlaced in the second frequency band.
[6]
A method according to claim 1, wherein it further comprises transmitting, by the first wireless communication device, a configuration indicating the waveform structure for communication in the frequency spectrum.
[7]
7. Method according to claim 6, wherein the selection is based on a power headroom of the second wireless communication device.
[8]
A method according to claim 1, wherein it further comprises receiving, by the first wireless communication device from the second wireless communication device, a configuration indicating the waveform structure for communication in the frequency spectrum, where the selection is based on the configuration.
[9]
A method according to claim 1, further comprising: communicating, by the first wireless communication device with the second wireless communication device, a configuration indicating a first set of random access resources having a frequency structure interlaced and a second set of random access resources having a non-interlaced frequency structure; and communicating, by the first wireless communication device with the second wireless communication device, a random access signal based on the configuration.
[10]
10. The method of claim 9, wherein the first set of random access resources and the second set of random access resources are in different frequency bands within the frequency spectrum.
[11]
11. The method of claim 9, wherein the first set of random access resources and the second set of random access resources are at different time periods.
[12]
A method according to claim 9, wherein the communication of the configuration includes transmitting, by the first wireless communication device to the second wireless communication device, configuration, and in which the communication of the random access signal includes monitoring , by the first wireless communication device, for the random access signal.
[13]
A method according to claim 9, wherein the communication of the configuration includes receiving, by the first wireless communication device from the second wireless communication device, the configuration.
[14]
14. The method of claim 13, further comprising: determining, by the first wireless communication device, whether to transmit the random access signal to the second wireless communication device using the first set of random access resources or the second set of random access features based on at least one of the configuration, a power headroon from the second wireless communication device, or a power utilization factor from the second wireless communication device.
[15]
A method according to claim 13, wherein the communication of the random access signal includes: transmitting, by the first wireless communication device to the second wireless communication device using the second set of random access resources, a first random access signal with the frequency structure not interlaced at a first transmission power; and transmit, by the first wireless communication device to the second wireless communication device using the first set of random access resources, a second random access signal with the frequency structure interlaced at a second transmission power greater than the first transmission power.
[16]
16. The method of claim 15, further comprising determining, by the first wireless communication device, to transmit the second random access signal with the interlaced frequency structure using the first set of random access features based on a comparison between the second transmission power and a power spectral density (PSD) parameter of a frequency band of the second set of random access resources.
[17]
17. The method of claim 1, wherein the frequency spectrum includes a first subcarrier spacing for the non-interlaced frequency structure, wherein communicating the communication signal includes communicating the communication signal using a second spacing. subcarrier for the interlaced frequency structure, and where the first subcarrier spacing is greater than the second subcarrier spacing.
[18]
18. An apparatus comprising: means for selecting a waveform structure between an interlaced frequency structure and an uninterlaced frequency structure for communication over a frequency spectrum; and means for communicating, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[19]
An apparatus according to claim 18, wherein the interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands interlacing with a second set of frequency bands in the frequency spectrum, and where the non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum.
[20]
Apparatus according to claim 18, wherein the means for selecting the waveform structure is further configured to select the waveform structure based on a power spectral density (PSD) parameter of the frequency spectrum .
[21]
21. Apparatus according to claim 20, in which the PSD parameter is associated with a PSD requirement in the frequency spectrum, and in which the means for selecting the waveform structure is additionally configured to select the shape structure wave by: determining if the frequency spectrum has the PSD requirement; and selecting the interlaced frequency structure as the waveform structure when determining that the frequency spectrum has the PSD requirement.
[22]
22. Apparatus according to claim 20, wherein the PSD parameter is associated with a PSD requirement in the frequency spectrum, wherein the means for selecting the waveform structure is further configured to select the waveform structure wave based on a first frequency band having the PSD requirement and a second frequency band not having the PSD requirement, and in which the device for communicating the communication signal is additionally configured to: communicate a first communication signal with the frequency structure interlaced in the first frequency band; and communicating a second communication signal with the frequency structure not interlaced in the second frequency band.
[23]
An apparatus according to claim 18, further comprising means for transmitting a configuration indicating the waveform structure for communication in the frequency spectrum.
[24]
Apparatus according to claim 23, wherein the means for selecting the waveform structure is further configured to select the waveform structure based on a power headroom of the second wireless communication device.
[25]
Apparatus according to claim 18, further comprising means for receiving, from the second wireless communication device, a configuration indicating the waveform structure for communicating in the frequency spectrum, wherein the means for selecting the waveform structure is additionally configured to select the waveform structure based on the configuration.
[26]
26. Apparatus according to claim 18, further comprising: means for communicating, with the second wireless communication device, a configuration indicating a first set of random access resources having an interlaced frequency structure and a second set of random access resources having a non-interlaced frequency structure; and means for communicating, with the second wireless communication device, a random access signal based on the configuration.
[27]
27. Apparatus according to claim 26 wherein the first set of random access resources and the second set of random access resources are in different frequency bands within the frequency spectrum.
[28]
28. Apparatus according to claim 26 wherein the first set of random access resources and the second set of random access resources are at different time periods.
[29]
29. The apparatus of claim 26, wherein the device for communicating the configuration is further configured to transmit, to the second wireless communication device, the wireless communication device, the configuration, and in which the device stops. communicating the random access signal is additionally configured to monitor the random access signal.
[30]
Apparatus according to claim 26, wherein the device for communicating the configuration is additionally configured to receive, from the second wireless communication device, the configuration.
[31]
Apparatus according to claim 30, further comprising: means for determining whether to transmit the random access signal to the second wireless communication device using the first set of random access features or the second set of random access based on at least one of the configuration, a power headroom from the second wireless communication device, or a power utilization factor from the second wireless communication device.
[32]
An apparatus according to claim 30, wherein the device for communicating the random access signal is further configured to: transmit, to the second wireless communication device using the second set of random access resources, a first signal random access with the frequency structure not interlaced in a first transmission power; and transmitting, to the second wireless communication device using the first set of random access resources, a second random access signal with the frequency structure interlaced at a second transmission power greater than the first transmission power.
[33]
An apparatus according to claim 32, further comprising means for determining to transmit the second random access signal with the interlaced frequency structure using the first set of random access resources based on a comparison between the second transmission power and a power spectral density (PSD) parameter of a frequency band from the second set of random access resources.
[34]
34. The apparatus of claim 18, wherein the frequency spectrum includes a first SCS for the non-interlaced frequency structure, wherein the means for communicating the communication signal is further configured to communicate the communication signal using a second SCS for the interlaced frequency structure, and where the first SCS is greater than the second SsCcs.
[35]
35. Computer readable medium having program code written on it, the program code comprising: code to make a first wireless communication device select a waveform structure between an interlaced frequency structure and a frequency structure not interlaced for communication over a frequency spectrum; and code to cause the first wireless communication device to communicate, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure.
[36]
36. A computer readable medium according to claim 35, wherein the interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands interlacing with a second set of bands frequency in the frequency spectrum, and where the non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum.
[37]
37. Computer-readable medium according to claim 35, wherein the code for making the first wireless communication device select the waveform structure is further configured to select the waveform structure based on a power spectral density parameter (PSD) of the frequency spectrum.
[38]
38. Computer readable medium according to claim 37, where the PSD parameter is associated with a PSD requirement in the frequency spectrum, and where the code to make the first wireless communication device select the structure waveform is additionally configured to select the waveform structure by: determining whether the frequency spectrum has the PSD requirement; and selecting the interlaced frequency structure as the waveform structure when determining that the frequency spectrum has the PSD requirement.
[39]
39. Computer readable medium according to claim 37, wherein the PSD parameter is associated with a PSD requirement in the frequency spectrum, where the code for making the first wireless communication device to select the shape structure waveform is additionally configured to select the waveform structure based on a first frequency band having the PSD requirement and a second frequency band not having the PSD requirement, and in which code to make the first wireless communication device communicating the communication signal is additionally configured to communicate the communication signal by: communicating a first communication signal with the interlaced frequency structure in the first frequency band; and communicating a second communication signal with the frequency structure not interlaced in the second frequency band.
[40]
40. Computer-readable medium according to claim 35, wherein it further comprises code to cause the first wireless communication device to transmit a configuration indicating the waveform structure for communication in the frequency spectrum.
[41]
41. Computer readable medium according to claim 40, wherein the code to make the first wireless communication device select the waveform structure is further configured to select the waveform structure based on a power headroom of the second wireless communication device.
[42]
42. A computer-readable medium according to claim 35, wherein it further comprises code to cause the first wireless communication device to receive, from the second wireless communication device, a configuration indicating the waveform structure for communicate in the frequency spectrum, where the code to make the first wireless communication device select the waveform structure is additionally configured to select the configuration based waveform structure.
[43]
43. A computer-readable medium according to claim 35, further comprising: code to cause the first wireless communication device to communicate, with the second wireless communication device, a configuration indicating a first set of random access resources having an interlaced frequency structure and a second set of random access resources having an non-interlaced frequency structure; and code to cause the first wireless communication device to communicate, with the second wireless communication device, a random access signal based on the configuration.
[44]
44, Computer-readable medium according to claim 43, wherein the first set of random access resources and the second set of random access resources are in different frequency bands within the frequency spectrum.
[45]
45. A computer-readable medium according to claim 43, wherein the first set of random access resources and the second set of random access resources are in different time periods.
[46]
46. A computer-readable medium according to claim 43, wherein the code to cause the first wireless communication device to communicate with the configuration is additionally configured to transmit, to the second wireless communication device, the configuration, and where the code to cause the first wireless communication device to communicate with the random access signal is additionally configured to monitor the random access signal.
[47]
47. A computer-readable medium according to claim 43, wherein the code to cause the first wireless communication device to communicate with the configuration is additionally configured to receive, from the second wireless communication device, the configuration.
[48]
48. Computer-readable medium according to claim 47, further comprising: code to make the first wireless communication device determine whether to transmit the random access signal to the second wireless communication device using the first set of random access features or the second set of random access features based on at least one of the configuration, a power headroom from the second wireless communication device, or a power utilization factor from the second wireless communication device thread.
[49]
49. Computer-readable medium according to claim 47, wherein the code to cause the first wireless communication device to communicate with the random access signal is additionally configured to: transmit, to the second communication device wireless using the second set of random access features, a first random access signal with the frequency structure not interlaced at a first transmit power; and transmitting, to the second wireless communication device using the first set of random access resources, a second random access signal with the frequency structure interlaced at a second transmission power greater than the first transmission power.
[50]
50. Computer-readable medium according to claim 49, in which it further comprises code to cause the first wireless communication device to transmit the second random access signal with the interlaced frequency structure using the first set of resources random access based on a comparison between the second transmission power and a power spectral density (PSD) parameter of a frequency band of the second set of random access resources.
[51]
51. Computer-readable medium according to claim 35, in which the frequency spectrum includes a first Sscs for the non-interlaced frequency structure, in which the code to cause the first wireless communication device to communicate with the communication signal is further configured to communicate the communication signal using a second SCS for the interlaced frequency structure, and where the first SCS is greater than the second SCS.

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公开号 | 公开日

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US20190029019A1|2019-01-24|

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JP2020527901A|2020-09-10|

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TW201909600A|2019-03-01|

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CN110892670A|2020-03-17|

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KR20200033847A|2020-03-30|

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WO2019018112A1|2019-01-24|

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US11122566B2|2021-09-14|

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EP3656074A1|2020-05-27|

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CA3067149A1|2019-01-24|

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法律状态:
2021-11-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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US201762535098P| true| 2017-07-20|2017-07-20|

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US62/535,098|2017-07-20|

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PCT/US2018/039992|WO2019018112A1|2017-07-20|2018-06-28|Waveform design based on power spectral densityparameters|

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