UPLINK AND DOWNLINK PREEMPTION INDICATIONS

专利摘要:
certain aspects of the present description provide techniques and apparatus for signaling channel preemption indications that allow a user equipment (eu) of a first type to perform one or more actions on resources that are reallocated to a eu of a second type. an illustrative method generally includes determining that the resources allocated for a scheduled transmission, by a first user equipment (eu), of a first type, overlap with the uplink channel resources, of a second eu, of a second type. the method also includes signaling based on the determination of an uplink preemption indication (ulpi) for the second eu that identifies at least some of the overlapping resources.
公开号:BR112020016250A2
申请号:R112020016250-7
申请日:2019-02-13
公开日:2020-12-15
发明作者:Chih-Ping Li；Jing Jiang；Jing Sun；Wanshi Chen；Seyedkianoush HOSSEINI；Jay Kumar Sundararajan；Yi Huang
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[0001] [0001] This order claims priority for US order No. 16 / 273,886, filed on February 12, 2019, which claims priority for US provisional order No. 62 / 630,546, filed on February 14, 2018, which are both assigned to the assignee of this application and expressly incorporated herein by reference in its entirety.
[0002] [0002] Aspects of the present description generally refer to wireless communication systems, and, more particularly, to techniques for signaling channel preemption indications that allow a first type user equipment (UE) to perform a or more actions (for example, suspending or controlling power for channel transmissions) on resources that are reallocated to a second type UE. Related Ordering Techniques
[0003] [0003] Wireless communication systems are widely developed to provide various telecommunication services, such as telephony, video, data, messaging and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (for example, bandwidth, transmission power). Examples of such multiple access technologies include Long Term Evolution (LTE) systems, code division multiple access systems (CDMA), time division multiple access systems (TDMA), frequency division multiple access systems (FDMA), orthogonal frequency division multiple access systems (OFDMA), single carrier frequency division multiple access systems (SC-FDMA), and time division synchronized code division multiple access (TD) systems -SCDMA).
[0004] [0004] In some examples, a wireless multiple access communication system may include several base stations, each simultaneously supporting communication to multiple communication devices, otherwise known as user equipment (UEs). In the LTE or LTE-A network, a set of one or more base stations can define an eNodeB (eNB). In other examples, (for example, on a next generation or 5G network), a wireless multiple access communication system may include multiple distributed units (DUs) (for example, edge units (EUs), edge nodes ( ENs), radio heads (RHs), intelligent radio heads (SRHs), transmit and receive points (TRPs), etc.) in communication with several central units (CUs) (for example, central nodes (CNs), node controllers (ANCs), etc.), where a set of one or more distributed units, in communication with a central unit, can define an access node (for example, a new radio base station (NR BS), a new Node Radio B (NR NB), a network node, NB 5G, gNB, etc.). A base station or DU can communicate with a set of UEs on downlink channels (for example, for transmissions from a base station or for a UE) and uplink channels (for example, for transmissions from a UE to a station base or distributed unit).
[0005] [0005] These multiple access technologies have been adopted in several telecommunication standards to provide a common protocol that allows different wireless devices to communicate at a municipal, national, regional and even global level. An example of an emerging telecommunication standard is the new radio (NR), for example, access to 5G radio. NR is a set of improvements to the mobile LTE standard promulgated by the 3rd Partnership Project. Generation (3GPP). It is designed to better support mobile broadband Internet access by improving spectral efficiency, reducing costs, improving services, using a new spectrum, and better integration with other open standards using OFDMA with a cyclic prefix (CP) downlink (DL) and uplink (UL), as well as support beam formation, multiple input and multiple output antenna technology (MIMO) and carrier aggregation.
[0006] [0006] However, as the demand for mobile broadband access continues to increase, there is a need to further improve NR technology. Preferably, these improvements should apply to other multiple access technologies and the telecommunication standards that employ those technologies. SUMMARY
[0007] [0007] The systems, methods and devices of the description each have several aspects, none of which is responsible for its desirable attributes alone.
[0008] [0008] Certain aspects of the present description provide a method for wireless communication that can be carried out, for example, by a base station (BS). The method generally includes determining that resources allocated for a transmission programmed by a first user equipment (UE), of a first type, overlap with the uplink channel resources allocated to a second UE of a second type. The method also includes signaling, based on the determination, an indication of uplink preemption (ULPI), for the second UE, which identifies at least some of the overlapping resources.
[0009] [0009] Certain aspects of the present description provide a method for wireless communication that can be carried out, for example, by user equipment (UE). The method generally includes signaling an uplink signal to a base station (BS) via the uplink channel resources allocated to the first UE of a first type, receiving an uplink preemption indication (ULPI) from BS, and the performance of one or more actions based on one or more resources identified in the ULPI, where the one or more resources overlap with the resources allocated for a transmission scheduled by a second UE of a second type.
[0010] [0010] Certain aspects of the present description provide a method for wireless communication that can be carried out, for example, by a base station (BS). The method generally includes determining that the resources allocated for a transmission to a first user equipment (UE), of a first type, overlap with the downlink channel resources allocated to a second UE of a second type. The method also includes signaling, based on the determination, a downlink preemption indication (DLPI), for the second UE, which comprises cross-carrier information and identifies at least some of the overlapping resources.
[0011] [0011] Certain aspects of the present description provide a method for wireless communication that can be carried out, for example, by a user equipment (UE). The method generally includes receiving a downlink signal from a base station (BS) using one or more downlink channel resources allocated to the first UE of a first type, receiving a downlink preemption indication (DLPI) comprising information from cross-bearer from the BS, and perform one or more actions based on one or more resources identified in the DLPI, where the one or more resources overlap with the resources allocated for a scheduled transmission to a second UE of a second type.
[0012] [0012] Aspects generally include methods, apparatus, systems, computer-readable media, and processing systems, as substantially described herein with reference to and as illustrated by the attached drawings.
[0013] [0013] For the purposes of the above and related purposes, the one or more aspects comprise the characteristics now fully described and particularly highlighted in the claims. The following description and the accompanying drawings present in detail certain characteristics illustrating one or more aspects. These characteristics are indicative, however, of only a few among the various ways in which the principles of the various aspects can be employed, and this description must include all said aspects and their equivalences. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] [0014] So that the way in which the characteristics mentioned above of the present description can be understood in detail, a more particular description, briefly summarized above, can be considered by reference to the aspects, some of which are illustrated in the attached drawings. It should be noted, however, that the attached drawings illustrate only certain typical aspects of this description and, therefore, are not considered to limit its scope, since the description can admit other equally efficient aspects.
[0015] [0015] Figure 1 is a block diagram illustrating conceptually an illustrative telecommunications system, in accordance with certain aspects of the present description;
[0016] [0016] Figure 2 is a block diagram illustrating a logical architecture illustrating a distributed RAN, according to certain aspects of this description;
[0017] [0017] Figure 3 is a diagram illustrating an illustrative physical architecture of a distributed RAN, according to certain aspects of this description;
[0018] [0018] Figure 4 is a block diagram illustrating conceptually a project of a BS and user equipment (EU) illustrative, according to certain aspects of this description;
[0019] [0019] Figure 5 is a diagram illustrating examples for implementing a communication protocol stack, according to certain aspects of the present description;
[0020] [0020] Figure 6 illustrates an example of a subframe centered on DL, according to certain aspects of the present description;
[0021] [0021] Figure 7 illustrates an example of a UL-centered subframe, according to certain aspects of the present description;
[0022] [0022] Figure 8 is a flow chart illustrating illustrative operations that can be performed by a BS, according to certain aspects of the present description;
[0023] [0023] Figure 9 is a flow chart illustrating illustrative operations that can be performed by a UE, according to certain aspects of this description;
[0024] [0024] Figure 10 illustrates a diagram of illustrative channels implementing channel preemption, according to certain aspects of the present description;
[0025] [0025] Figure 11 illustrates a frequency timing diagram of the illustrative downlink and uplink channels, according to certain aspects of this description;
[0026] [0026] Figure 12 illustrates a diagram of an illustrative uplink preemption indication format (ULPI), according to certain aspects of the present description;
[0027] [0027] Figure 13 shows a diagram of another illustrative ULPI format, according to certain aspects of the present description;
[0028] [0028] Figure 14 illustrates a diagram of an illustrative broadband bitmap, in accordance with certain aspects of the present description;
[0029] [0029] Figure 15 illustrates a diagram of an illustrative bitmap divided by subband, according to certain aspects of the present description;
[0030] [0030] Figure 16 illustrates a diagram of an illustrative bitmap 1630 for a TDD configuration, according to certain aspects of the present description;
[0031] [0031] Figure 17 illustrates a diagram of an illustrative bitmap for a TDD configuration divided by the subband, according to certain aspects of the present description;
[0032] [0032] Figure 18 illustrates an illustrative diagram of the uplink channels, according to certain aspects of the present description;
[0033] [0033] Figure 19 illustrates an illustrative diagram of uplink channels, according to certain aspects of the present description;
[0034] [0034] Figure 20 illustrates a diagram of an illustrative bitmap, according to certain aspects of the present description;
[0035] [0035] Figure 21 illustrates a diagram of a channel shared in physical uplink (PUSCH) illustrative, according to certain aspects of the present description;
[0036] [0036] Figure 22 illustrates a diagram of an illustrative uplink channel having resources programmed in a semi-persistent manner (SPS), according to certain aspects of the present description;
[0037] [0037] Figure 23 illustrates a diagram of an illustrative bitmap having cross-carrier information, in accordance with certain aspects of the present description;
[0038] [0038] Figure 24 illustrates a diagram of an illustrative bitmap having cross-carrier information, in accordance with certain aspects of the present description;
[0039] [0039] Figure 25 is a flow chart illustrating the illustrative operations that can be performed by a BS, according to certain aspects of this description;
[0040] [0040] Figure 26 is a flow chart illustrating illustrative operations that can be performed by a UE, according to certain aspects of the present description;
[0041] [0041] Figure 27 illustrates a diagram of an illustrative beep map having cross-carrier information, in accordance with certain aspects of the present description;
[0042] [0042] Figure 28 illustrates a diagram of an illustrative bitmap having cross-carrier information, in accordance with certain aspects of the present description;
[0043] [0043] Figure 29 illustrates a block diagram of an illustrative wireless communication device, in accordance with certain aspects of the present description.
[0044] [0044] To facilitate understanding, identical numerical references were used, where possible, to designate identical elements that are common to the figures. It is contemplated that the elements described in one aspect can be beneficially used in other aspects without specific mention. DETAILED DESCRIPTION
[0045] [0045] Aspects of this description provide apparatus, methods, processing systems and computer-readable media for new radio (NR) (new radio access technology or 5G technology). NR can support various wireless communication services, such as improved mobile broadband (eMBB) targeting broadband width (eg 80 MHz and beyond), millimeter wave (mmW) targeting high carrier frequency (eg 60 GHz), massive MTC (mMTC) targeting backward compatible MTC techniques, and / or mission critical targeting ultra reliable low latency communications (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTI) to match the respective quality of service (QoS) requirements. Additionally, these services can coexist in the same subframe.
[0046] [0046] Aspects of this description provide techniques and apparatus for dynamic switching between uplink transmission schemes based on non-codebook and codebook.
[0047] [0047] The following description provides examples and is not limiting the scope, applicability or examples presented in the claims. Changes can be made to the function and arrangement of the elements discussed without departing from the scope of the description. Various examples may omit, replace or add various procedures or components as appropriate. For example, the methods described can be performed in a different order than described and several steps can be added, omitted or combined. In addition, the characteristics described in relation to some examples can be combined in some other examples. For example, an apparatus can be implemented or a method can be practiced using any number of aspects presented here. In addition, the scope of the description should cover such apparatus or method that is practiced using another structure, functionality, or structure and functionality in addition to or in addition to various aspects of the description presented here. It should be understood that any aspect of the description presented here can be substantiated by one or more elements of a claim. The term "illustrative" is used here to mean "serving as an example, case or illustration". Any aspect described here as "illustrative" should not necessarily be considered preferred or advantageous over other aspects.
[0048] [0048] The techniques described here can be used for various wireless communication networks, such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technology, such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes Broadband CDMA (WCDMA) and other variations of CDMA. cdma2000 covers the IS-2000, IS-95 and IS-856 standards. A TDMA network can implement radio technology, such as the Global System for Mobile Communications (GSM). An OFDMA network can implement radio technology, such as NR (for example, 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX) , IEEE
[0049] [0049] Figure 1 illustrates an illustrative wireless network 100 in which aspects of the present description can be realized. For example, wireless network 110 may be a new radio (NR) or 5G network. In certain respects, a BS 110 may signal an uplink preemption indication (ULPI) to a UE of a first type (eg UE eMBB) to reallocate the uplink channel resources to a UE of a second type (eg , UE URLLC) as further described here with respect to figures 8 and 9. In other respects, BS 110 may signal a downlink preemption indication (DLPI) for the first type UE (eg UE eMBB) to reallocate the downlink channel resources for the UE of the second type (for example, UE URLLC), as further described here with respect to figures 25 and 26.
[0050] [0050] As illustrated in figure 1, wireless network 100 can include several BSs 110 and other network entities. A BS can be a station that communicates with UEs. Each BS 110 can provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to a coverage area of a Node B and / or a subsystem of Node B serving that coverage area, depending on the context in which the term is used. In NR systems, the term "cell" and gNB, Node B, NB 5G, AP, BS NR, BS NR or TRP can be interchangeable. In some instances, a cell may not necessarily be stationary, and the cell's geographical area may move according to the location of a mobile base station. In some examples, base stations can be interconnected to each other and / or to one or more other base stations or network nodes (not shown) on wireless network 100 through various types of return access channel interfaces, such as such as a direct physical connection, a virtual network, or similar, using any suitable transport network.
[0051] [0051] In general, any number of wireless networks can be developed in a given geographical area. Each wireless network can support a particular radio access technology (RAT) and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, an air interface, etc. A frequency can also be referred to as a carrier, a frequency channel, etc. Each frequency can support a unique RAT in a given geographic area to avoid interference between wireless networks from different RATs. In some cases, NR or RAT 5G networks can be developed.
[0052] [0052] A BS can provide communication coverage for a macro cell, a peak cell, a femto cell, and / or other types of cell. A macro cell can cover a relatively large geographical area (for example, several kilometers in radius) and can allow unrestricted access by UEs with a service subscription. A peak cell can cover a relatively small geographical area and can allow unrestricted access by UEs with a service subscription. A femto cell can cover a relatively small geographic area (for example, a residence) and can allow restricted access by UEs having association with the femto cell (for example, UEs in a Closed Subscriber Group (CSG), UEs for users in the residence, etc.). A BS for a macro cell can be referred to as a BS macro. A BS for a peak cell can be referred to as a BS peak. A BS for a femto cell can be referred to as a BS femto or a BS of origin. In the example shown in Figure 1, BSs 110a, 110b and 110c can be macro BSs for macro cells 102a, 102b and 102c, respectively. The BS 110x can be a BS peak for a 102x cell peak. BSs 110y and 110z can be femto BS for femto cells 102y and 102z, respectively. A BS can support one or multiple cells (for example, three).
[0053] [0053] Wireless network 100 may also include relay stations. A relay station is a station that receives a transmission of data and / or other information from an upstream station (for example, a BS or a UE) and sends a transmission of data and / or other information to a downstream station (for example, example, a UE or a BS). A relay station can also be a UE that relays transmissions to other UEs. In the example illustrated in figure 1, a relay station 110r can communicate with BS 110a and UE 120r in order to facilitate communication between BS 110a and UE 120r. A relay station can also be referred to as a relay BS, a relay, etc.
[0054] [0054] Wireless network 100 may be a heterogeneous network that includes BSs of different types, for example, macro BS, BS peak, BS femto, retransmitters, etc. These different types of BSs can have different levels of transmission power, different areas of coverage, and different impacts on interference on the wireless network 100. For example, a BS macro can have a high level of transmission power (for example, 20 Watts), while the BS peak, the BS femto, and the retransmitters may have a lower transmission power level (for example, 1 Watt).
[0055] [0055] Wireless network 100 can support synchronized or asynchronous operation. For synchronized operation, BSs can have a similar frame delay, and transmissions from different BSs can be approximately time aligned. For asynchronous operation, BSs may have different frame timing, and transmissions to different BSs may not be time aligned. The techniques described here can be used for both synchronized and asynchronous operation.
[0056] [0056] A network controller 130 can couple to a set of BSs and provide coordination and control for those BSs. The network controller 130 can communicate with the BSs 110 through a return access channel. BSs 110 can also communicate with each other, for example, directly or indirectly via the wired or wireless return access channel.
[0057] [0057] UEs 120 (e.g. 120x, 120y, etc.) can be dispersed over wireless network 100, and each UE can be stationary or mobile. A UE can also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, Customer Facility Equipment (CPE), a cell phone, a smartphone, a personal digital assistant (PDA) ),
[0058] [0058] In figure 1, a solid line with double arrows indicates the desired transmissions between a UE and a serving BS, which is a BS designated to serve the UE in downlink and / or uplink. A thin dashed line with double arrows indicates the interference transmissions between a UE and a BS.
[0059] [0059] Certain wireless networks (for example, LTE) use orthogonal frequency division multiplexing (OFDM) in downlink and single carrier frequency division multiplexing (SC-FDM) in uplink. OFDM and SC-FDM divide the system's bandwidth into multiple orthogonal subcarriers (K), which are also commonly referred to as tones, compartments, etc. 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) may depend on the system's bandwidth. For example, the spacing of the subcarriers can be 15 kHz and the minimum resource allocation (called a "resource block") can be 12 subcarriers (or 180 kHz). Consequently, the nominal FFT size can equal 128, 256, 512, 1024 or 2048 for the system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz), respectively. The system bandwidth can also be divided into sub-bands. For example, a subband can cover 1.8 MHz (that is, 6 resource blocks), and there can be 1, 2, 4, 8, or 16 subbands for the 1.25 system bandwidth, 2.5, 5, 10 or 20 MHz, respectively.
[0060] [0060] While aspects of the examples described here can be associated with LTE technologies, aspects of this description may apply to other wireless communication systems, such as NR.
[0061] [0061] NR can use OFDM with a CP in uplink and downlink and include support for half duplex operation using TDD. A single component carrier bandwidth of 100 MHz can be supported. NR resource blocks can span 12 subcarriers with a 75 kHz subcarrier bandwidth over the duration of 0.1 ms. Each radio frame can be 0.2 ms long. Each subframe can indicate a link direction (ie DL or UL) for data transmission and the link direction for each subframe can be switched dynamically. Each subframe can include DL / UL data in addition to DL / UL control data. UL and DL subframes for NR can be as described in greater detail below with respect to figures 6 and 7. For certain NR networks, such as eMBB and / or URLLC, each subframe can include a subcarrier that includes up to 4 partitions. A partition can include 14 mini partitions and up to 14 OFDM symbols. A mini partition can include one or more OFDM symbols. OFDM symbols on a partition can be classified as downlink, flexible (that is, downlink or uplink) or uplink. The beam formation can be supported and the beam direction can be dynamically configured. MIMO transmissions with pre-coding can also be supported. DL MIMO configurations can support up to 8 transmitter antennas with multi-layered DL transmissions of up to 8 streams and up to 2 streams per UE. Multilayered transmissions with up to 2 streams per UE can be supported. Multiple cell aggregation can be supported with up to 8 server cells. Alternatively, NR can support a different air interface, in addition to the one based on OFDM. NR networks can include entities such as CUs and / or DUs.
[0062] [0062] In some examples, access to the air interface can be programmed, where a programming entity (for example, a base station) allocates resources for communication between some or all devices and equipment within its service area or cell . Within the present description, as further described below, the programming entity may be responsible for programming, designating, reconfiguring and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities use resources allocated by the programming entity. Base stations are not the only entities that can function as a programming entity. That is, in some instances, a UE can function as a programming entity, programming resources for one or more subordinate entities (for example, one or more other UEs). In this example, the UE functions as a programming entity, and other UEs use resources programmed by the UE for wireless communication. A UE can function as a programming entity in a non-hierarchical network (P2P), and / or in an interlaced network. In an example of an interlaced network, UEs can optionally communicate directly with each other in addition to communicating with the programming entity.
[0063] [0063] Thus, in a wireless communication network with programmed access to time and frequency resources and having a cellular configuration, a P2P configuration, and an interlaced configuration, a programming entity and one or more subordinate entities can be communicate using the programmed resources.
[0064] [0064] As noted above, an RAN can include a CU and DUs. A BS NR (for example, gNB, NB 5G, NB, TRP, AP) can correspond to one or multiple BSs. NR cells can be configured as access cells (ACells) or data cells only (DCells). For example, the RAN (for example, a central unit or distributed unit) can configure the cells. DCells can be cells used for carrier aggregation or dual connectivity, but not used for initial access, cell selection / re-selection, or transfer. In some cases, DCells may not transmit synchronization signals - in some cases DCells may transmit SS. NR BSs can transmit downlink signals to the UEs indicating the cell type. Based on the cell type indication, the UE can communicate with BS NR. For example, the UE can determine NR BSs to consider cell selection, access, transfer and / or measurement based on the indicated cell type.
[0065] [0065] Figure 2 illustrates a logical architecture illustrating a distributed radio access network (RAN) 200, which can be implemented in the wireless communication system illustrated in figure 1. A 5G 206 access node can include a controller access node (ANC) 202. The ANC can be a central unit (CU) of the distributed RAN 200. The return access channel interface to the next generation core network (NG-CN) 204 can end at the ANC. The return access channel interface for neighboring next generation access nodes (NG-ANs) may end at the ANC. The ANC may include one or more 208 TRPs (which may also be referred to as BSs, BSs NR, Nodes B, NBs 5G, APs, or some other term). As described above, a TRP can be used interchangeably with "cell".
[0066] [0066] TRPS 208 can be a DU. TRPs can be connected to an ANC (ANC 202) or more than one ANC (not shown). For example, for RAN sharing, radio as a service (RaaS), and service-specific AND developments, the TRP can be connected to more than one ANC. A TRP can include one or more antenna ports. TRPs can be configured to server individually (for example, dynamic selection) or together (for example, joint transmission) traffic to a UE.
[0067] [0067] Local architecture 200 can be used to illustrate the definition of fronthaul channel. The architecture can be defined to support fronthaul channel solutions through different types of developments. For example, the architecture may be based on transmission network capabilities (for example, latency and / or bandwidth fluctuation).
[0068] [0068] The architecture can share characteristics and / or components with LTE. According to the aspects, next generation AN (NG-AN) 210 can support dual connectivity with NR. NG-AN shares a common fronthaul for LTE and NR.
[0069] [0069] The architecture may allow cooperation between TRPs 208. For example, cooperation can be predetermined within a TRP and / or through TRPs through ANC 202. According to aspects, no inter-TRP interface may be required / gift.
[0070] [0070] According to the aspects, a dynamic configuration of the divided logical functions may be present within the 200 architecture. As will be described in more detail with reference to figure 5, the Radio Resource Control (RRC) layer, the layer Packet Data Convergence Protocol (PDCP), the Radio Link Control (RLC) layer, the Medium Access Control (MAC) layer and the Physical (PHY) layers can be adapted to the DU or CU (for example, TRP or ANC, respectively). According to certain aspects, a BS may include a central unit (CU) (for example, ANC 202) and / or one or more distributed units (for example, one or more TRPs 208).
[0071] [0071] Figure 3 illustrates an illustrative physical architecture of a distributed RAN 300, according to the aspects of this description. A centralized core network unit (C-CU) 302 can host the core network functions. C-CU can be developed centrally. The C-CU functionality can be downloaded (for example, for advanced wireless services (AWS)), in an effort to handle peak capacity.
[0072] [0072] A centralized RAN unit (C-RU) 304 can host one or more ANC functions. Optionally, the C-RU can host the core network functions locally. C- RU may have distributed development. The C-RU may be closer to the edge of the network.
[0073] [0073] A DU 306 can host one or more TRPs (edge node (EN), edge unit (EU), a radio head (RH), an intelligent radio head (SRH), or the like). DU can be located at network edges with radio frequency (RF) functionality.
[0074] [0074] Figure 4 illustrates illustrative components of BS 110 and UE 120 illustrated in figure 1, which can be used to implement aspects of the present description. One or more components of BS 110 and UE 120 can be used to practice the aspects of this description. For example, antennas 452, Tx / Rx 222, processors 466, 458, 464, and / or controller / processor 480 of UE 120 and / or antennas 434, processors 460, 420, 438 and / or controller / 440 processor from BS 110 can be used to perform the operations described here and illustrated with reference to figures 8 and 9.
[0075] [0075] Figure 4 illustrates a block diagram of a project of a BS 110 and a UE 120, which can be one among the BSs and one among the UEs in figure 1. For a situation of restricted association, the base station 110 it can be the macro BS 110c in figure 1, and the UE 120 can be the UE 120y. Base station 110 can also be a base station of some other type. The base station 110 can be equipped with antennas 434a to 434t, and the UE 120 can be equipped with antennas 452a to 452r.
[0076] [0076] At base station 110, a transmission processor 420 can receive data from a data source 412 and control information from a controller / processor
[0077] [0077] At UE 120, antennas 452a to 452r can receive downlink signals from base station 110 and can provide received signals to demodulators (DEMODs) 454a to 454r, respectively. Each demodulator 454 can condition (for example, filter, amplify,
[0078] [0078] On uplink on UE 120, a transmission processor 464 can receive and process data (for example, for the Shared Physical Uplink Channel (PUSCH)) from a 462 data source and control information (for example , for the Physical Uplink Control Channel (PUCCH) from controller / processor 480. The 464 transmission processor can also generate reference symbols for a reference signal.The symbols of the 464 transmission processor can be pre-encoded by a MIMO TX 466 processor, if applicable, further processed by demodulators 454a to 454r (for example, for SC-FDM, etc.), and transmitted to base station 110. In BS 110, uplink signals from UE 120 can be received by antennas 434, processed by modulators 432, detected by a MIMO detector 436, if applicable, and further processed by a receiving processor 438 to obtain decoded data and control information sent by UE 120. It processes receiving receiver 438 can provide decoded data to a data warehouse 439 and the decoded control information to the controller / processor 440.
[0079] [0079] Controllers / processors 440 and 480 can direct the operation on base station 110 and UE 120, respectively. The 440 processor and / or other processors and modules in BS 110 can perform or direct, for example, the execution of the functional blocks illustrated in figures 8 and 27 and / or other processes for the techniques described here. The processor 480 and / or other processors and modules in the UE 120 can also perform or direct, for example, the execution of functional blocks illustrated in figures 9 and 28 and / or other processes for the techniques described here. Memories 442 and 482 can store data and program codes for BS 110 and UE 120, respectively. A 444 programmer can program the UEs for downlink and / or uplink data transmission.
[0080] [0080] Figure 5 illustrates a diagram 500 illustrating the examples for implementing a communications protocol stack, according to the aspects of the present description. The illustrated communications protocol stacks can be implemented by devices operating on a 5G system (for example, a system that supports uplink-based mobility). Diagram 500 illustrates a communications protocol stack including a Radio Resource Control (RRC) layer 510, a Packet Data Convergence Protocol (PDCP) layer 515, a Radio Link Control (RLC) layer 520, a Medium Access Control (MAC) layer 525, and a Physical (PHY) layer 530. In several examples, layers of a protocol stack can be implemented as separate software modules, parts of a processor or ASIC , parts of devices not located together connected by a communications link, or various combinations thereof. Implementations of the same location cannot be used, for example, in a protocol stack for a network access device (for example, ANs, CUs and / or DUs) or a UE.
[0081] [0081] A first option 505-a illustrates a split implementation of a protocol stack, where the implementation of the protocol stack is split between a centralized network access device (for example, an ANC 202 in figure 2) and access to the distributed network (for example, DU 208 in figure 2). In the first option 505-a, an RRC layer 510 and a PDCP layer 515 can be implemented by the central unit and an RLC layer 520, a MAC layer 525, and a PHY 530 layer can be implemented by the DU. In several examples, CU and DU can be located together or not. The first option 505-a can be useful in a macro cell, micro cell or peak cell development.
[0082] [0082] A second option 505-b illustrates a unified implementation of a protocol stack, where the protocol stack is implemented in a singular network access device (for example, access node (AN), new radio base station (BS NR), a new Radio Node B (NB NR), a network node (NN), or similar). In the second option, the RRC 510 layer, the PDCP 515 layer, the RLC 520 layer, the MAC 525 layer, and the PHY 530 layer can each be implemented by the AN. The second option 505-b may be useful in developing a femto cell.
[0083] [0083] Regardless of whether a network access device implements part or all of the protocol stack, a UE can implement an entire protocol stack (for example, layer RRC 510, layer PDCP 515, layer RLC 520, layer MAC 525 and PHY 530 layer).
[0084] [0084] Figure 6 is a diagram 600 illustrating an example of a subframe centered on DL. The DL-centered subframe may include a control part 602. The control-part 602 may exist in the initial part of the DL-centered subframe. Control part 602 may include various programming information and / or control information corresponding to various parts of the DL-centered subframe. In some configurations, control part 602 can be a physical DL control channel (PDCCH), as shown in figure 6. The DL-centered subframe can also include a DL 604 data part. The DL 604 data part can, sometimes referred to as the payload of the DL-centered subframe. The DL 604 data portion may include the communication resources used to communicate DL data from the programming entity (for example, UE or BS) to the subordinate entity (for example, UE). In some configurations, the DL 604 data portion may be a physical DL shared channel (PDSCH).
[0085] [0085] The DL-centered subframe may also include a common UL part 606. The common UL part 606 can sometimes be referred to as a UL burst, a common UL burst and / or several other suitable terms. Common UL part 606 may include feedback information that corresponds to several other parts of the DL-centered subframe. For example, common UL part 606 may include return information that corresponds to the control part
[0086] [0086] Figure 7 is a diagram 700 illustrating an example of a UL-centered subframe. The UL centered subframe may include a control part 702. The control part 702 may exist in the initial part of the UL centered subframe. The control part 702 in figure 7 can be similar to the control part 602 described above with reference to figure 6. The UL-centered subframe can also include a UL 704 data part. The UL 704 data part can sometimes be referred to as the UL-centered subframe payload. The UL part can refer to the communication resources used to communicate UL data from the subordinate entity (for example, UE) to the programming entity (for example, UE or BS). In some configurations, control part 702 can be a physical DL control channel (PDCCH).
[0087] [0087] As illustrated in figure 7, the end of control part 702 can be separated in time from the beginning of UL 704 data part. This separation in time can sometimes be hurt like a space, protection period, interval protection and / or various other suitable terms. This separation provides time for switching from DL communication (for example, reception operation by the programming entity) to UL communication (for example, transmission by the programming entity). The UL-centered subframe can also include a common UL part 706 in figure 7. The common UL part 706 in figure 7 may be similar to the common UL part 606 described above with reference to figure 6. The common UL part 706 may, additionally or alternatively, include information pertaining to the channel quality indicator (CQI), sound reference signals (SRSs) and various other suitable types of information. Those skilled in the art will understand that the above is merely an example of a subframe centered on UL and alternative structures having similar characteristics can exist without necessarily deviating from the aspects described here. In one example, a frame can include both UL-centered and DL-centered subframes. In this example, the ratio of UL-centered subframes to DL subframes in a frame can be dynamically adjusted based on the amount of UL data and the amount of DL data that is transmitted. For example, if there is more UL data, then the ratio of UL-centered subframes to DL subframes can be increased. Conversely, if there is more DL data, then the ratio of UL-centered subframes to DL subframes can be reduced.
[0088] [0088] In some circumstances, two or more subordinate entities (for example, UEs) can communicate with each other using side link signals. Real-world applications of such side-link communications may include public security, proximity services, EU-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, critical interlacing for mission, and / or various other suitable applications. Generally, a side link signal can refer to a signal communicated from a subordinate entity (eg, UE1) to another subordinate entity (eg, UE2) with relaying that communication through the programming entity (eg, UE or BS), although the programming entity can be used for programming and / or control purposes. In some examples, side link signals can be communicated using a licensed spectrum (unlike wireless local area networks, which typically use an unlicensed spectrum).
[0089] [0089] An UE can operate on various radio resource configurations, including a configuration associated with broadcast pilots using a dedicated resource set (for example, a dedicated radio resource control state (RRC), etc.) or a configuration associated with transmission pilots using a common set of resources (for example, a common RRC state, etc.). When operating in the dedicated RRC state, the UE can select a dedicated set of resources to transmit a pilot signal to a network. When operating in the RRC common state, the UE can select a common set of resources to transmit a pilot signal to the network. In any case, a pilot signal transmitted by the UE can be received by one or more network access devices, such as an AN, or a DU, or parts thereof. Each receiving network access device can be configured to receive and measure the pilot signals transmitted in the common set of resources, and also receive and measure the pilot signals transmitted in dedicated sets of resources allocated to the UEs for which the access device to the network is an element of a set of monitoring devices for network access to the UE. One or more of the receiving network access devices, or a CU to which the receiving network access devices transmit the measurements of the pilot signals, can use the measurements to identify server cells for the UEs or to initiate a change in the server cell for one or more of the UEs.
[0090] [0090] In wireless communications, channel status information (CSI) can refer to known channel properties of a communication link. CSI can represent the combined effects, for example, of scattering, fading and energy degradation with distance between a transmitter and a receiver. The channel estimate can be performed to determine these effects on the channel. CSI can be used to adapt transmissions based on current channel conditions, which is useful for achieving reliable communication, in particular, with high data rates in multiple antenna systems. CSI is typically estimated at the receiver, quantized and fed back to the transmitter. ILLUSTRATIVE UPLINK PREEMPTION INDICATION
[0091] [0091] Certain communication systems (eg NR) maintain ultra-reliable low-latency communication (URLLC) that provides requirements for latency and reliability. For example, URLLC can provide an end-to-end latency of 10 milliseconds and a block error ratio (BLER) of 10-5 in 1 millisecond. In order to improve URLLC services, the RAN may signal to an UE to suspend or perform power control on ongoing transmissions when URLLC transmissions are scheduled. This preemption of resources can facilitate a reduction in interference with URLLC transmissions. As further described here, the RAN can transmit an indication to the UE eMBB to take one or more actions to reduce interference with a scheduled URLLC transmission.
[0092] [0092] Aspects presented here provide techniques for signaling an uplink preemption indication (ULPI) to a UE of a first type (eg UE eMBB) to reallocate the uplink channel resources to a UE of a second type (e.g. UE URLLC).
[0093] [0093] Figure 8 is a flow chart illustrating illustrative operations 800 that can be performed, for example, by a base station and / or radio access network (for example, BS 110 in figure 1) to implement a preemption indication of uplink (ULPI), in accordance with certain aspects of this description. Operations 800 can be implemented as software components that run and run on one or more processors (for example, processor 440 in figure 4). Additionally, the transmission and reception of signals by the BS in operations 800 may be allowed, for example, by one or more antennas (for example, the antennas 434 of figure 4). In certain aspects, the transmission and / or reception of signals by the BS can be implemented through a bus interface of one or more processors (for example, processor 440) obtaining and / or sending signals.
[0094] [0094] Operations 800 can begin, in 802, by BS determining that the resources allocated for a transmission programmed by a first user equipment (UE) of a first type (for example, UE URLLC) overlap with the channel resources of uplink allocated to a second UE of a second type (for example, UE eMBB). In 804, BS signals, based on the determination in 802, an indication of uplink preemption (ULPI), for the second UE, which identifies at least some of the overlapping resources.
[0095] [0095] Figure 9 is a flow chart illustrating the illustrative operations 900 that can be performed, for example, by a UE (for example, the UE 120), to implement ULPI reception and processing, according to certain aspects of this description. Operations 900 can be implemented as software components that run and run on one or more processors (for example, processor 480 in figure 4). In addition, the transmission and reception of signals by the UE in operations 900 may be permitted, for example, by one or more antennas (for example, the antennas 452 of figure 4). In certain aspects, the transmission and / or reception of signals by the UE can be implemented through a bus interface of one or more processors (for example, processor 480) obtaining and / or sending signals.
[0096] [0096] Operations 900 can start, in 902, by the UE by signaling an uplink signal to a base station (BS) through the uplink channel resources allocated to a first UE of a first type (for example, an UE eMBB) . In 904, the first UE receives an indication of uplink preemption (ULPI) from BS. In 906, the first UE performs one or more actions, as further described here, based on one or more resources identified in the ULPI, where the one or more resources overlap with the resources allocated for a transmission scheduled by a second EU of a second type (for example, UE URLLC).
[0097] [0097] In certain aspects, performing one or more actions may include several actions performed by the UE as further described here. For example, performing one or more actions may include reducing transmission power during scheduled transmission. Performing one or more actions may also include resuming a transmission from the first UE after the scheduled transmission. In certain respects, performing one or more actions may depend on whether the identified resources are physical uplink control channel resources (PUCCH), semi-persistent programmed resources (SPS), audible reference signal resources (SRS), channel resources physical random access (PRACH), physical broadcast channel (PBCH) capabilities, demodulation reference signal capabilities (DMRS), synchronization signal block capabilities (SSB), phase tracking reference signal capabilities ( PTRS), channel status information reference signal resources (CSIRS) and the like, as further described here.
[0098] [0098] In certain aspects, the UE eMBB can receive ULPI through downlink signaling and suspend any scheduled transmissions during URLLC transmissions as indicated by ULPI. For example, figure 10 illustrates a frequency timing diagram of an illustrative downlink channel 1002 and uplink channel 1004, in accordance with aspects of the present description. As shown, the downlink and uplink channels 1002 and 1004 span partition 1006. BS can transmit a DCI URLLC 1010 and an ULPI 1020 via the DL 1002 channel. Since the UE eMBB is transmitting UL 1012 data via the UL 1004 channel. , UE eMBB receives ULPI and determines which of its allocated resources overlap with the scheduled URLLC transmission. The DCI 1010 can provide a UL grant to the UE URLLC and the UE URLLC can transmit UL 1014 data over the UL 1004 channel. At the same time, the UE eMBB can suspend UL transmissions using the resources reallocated to the UE URLLC as indicated by ULPI. This allows URLLCs to avoid interference with eMBB broadcasts and provides an ideal wireless environment for URLLCs. In certain respects, BS may also periodically signal ULPI to UE eMBB to each or more OFDM symbols or partitions as illustrated by the second ULPI 1020.
[0099] [0099] In certain aspects, the ULPI can be signaled through a location other than a search space and / or a control resource region with respect to a downlink preemption indication (DLPI). DLPI can also be signaled using a temporary radio network identifier (RNTI) distinct from an RNTI used to signal DLPI. In certain aspects, ULPI can be signaled using the same location of a search space and / or a control resource region and the same RNTI as DLPI, but there is an additional indication to decide if the signaling is for uplink or downlink preemption.
[00100] [00100] In certain respects, ULPI may identify one or more resources allocated to the UE eMBB with respect to a time offset, a time duration, and one or more resources from a reference uplink region (RUR). For example, figure 11 illustrates a frequency timing diagram of the illustrative downlink and uplink channels 1102 and 1104, respectively. As illustrated, the downlink and uplink channels 1102 and 1104 span three partitions. In the second partition, ULPI 1120 is transmitted via downlink signaling. ULPI can indicate a deviation time 1122, which is, for example, relative to the transmission time of ULPI, as shown in figure 11. Deviation time 1122 indicates to the UE eMBB when a RUR (for example, RUR 1140 ) starts within the UL 1104 channel and can be one or more mini partitions in length. The RUR is a resource map that includes an 1124 duration and one or more 1126 resources that are reallocated to the UE URLLC, which receives UL 1114 resources. The 1126 resources reallocated for the scheduled URLLC transmission can also be referred to here as a space of preemption.
[00101] [00101] In certain aspects, BS can serve UEs having various capabilities, such as latency capabilities, and provide information at ULPI to take into account these different types of UEs. For example, ULPI 1120 can provide a second RUR 1142 that has a longer deviation time in length than the first RUR 1140. That is, ULPI 1120 can indicate for UEs, having a higher latency, a deviation time which provides these UEs with sufficient time to respond to ULPI 1120.
[00102] [00102] In certain respects, the ULPI may be exclusive to one or more UEs that have a specific capacity, such as an ULPI that is specific to a particular UE (that is, an EU specific ULPI). That is, the RAN can generate a ULPI for a group of UEs that have a specific capacity, for example, latency. For example, figure 12 illustrates a diagram of the illustrative formats of ULPI 1220A and B, according to the aspects of the present description. As illustrated, the ULPI 1220A format has RUR 1240 information that is exclusive to one or more UEs having a specific capacity. Similarly, the ULPI 1220B format has RUR 1242 information that is exclusive to one or more UEs having another specific capacity.
[00103] [00103] In certain respects, ULPI can be applied to UEs having different capacities (for example, latencies), such as a ULPI that is common among a group of UEs (that is, a ULPI common to the group). That is, the RAN can generate a ULPI that has RUR information for UEs having different capacities or a ULPI that is common among a group of UEs (that is, a ULPI common to a group). For example, figure 13 shows a diagram of an illustrative ULPI format 1320, according to certain aspects of the present description. As illustrated, the ULPI 1320 format includes RUR 1340 information that is applied to UEs that have a specific capacity and RUR 1342 information that is applied to UEs that have a different capacity. As further described here, the RUR information can be transported via a bitmap at ULPI. When ULPI is applied to UEs having different capacities, UEs of one capacity can use part of the bitmap, ignoring the rest of the RUR information in the bitmap used by UEs of another capacity.
[00104] [00104] In certain respects, the ULPI format can be determined based on the exchange of information between the RAN and the UE, such as the exchange of RRC information. In some respects, the ULPI format can be programmed in advance, so that the RAN does not exchange information with a UE to determine the ULPI format compatible with that UE.
[00105] [00105] In certain aspects, ULPI may include a bitmap that identifies the one or more resources to be used during the scheduled URLLC transmission. The bitmap can define the duration of and resources included in the RUR. Each bit of the bitmap can represent several resource parameters. A bit from the bitmap can correspond to a broadband resource, a subband resource, or one or more OFDM RUR symbols. Broadband resources can refer to all frequency domain resources in a component bearer active bandwidth (BWP) portion, or in component bearers' active BWPs in the contiguous bearer aggregation. For example, figure 14 illustrates a diagram of an illustrative bitmap 1430, in accordance with certain aspects of the present description. As illustrated, ULPI 1420 provides a 1430 bitmap including 14 bits, where each bit represents a broadband uplink resource. Bitmap 1430 identifies the uplink resources that are reallocated for URLLC transmission. As illustrated, a 1432 bit having a value of "0" can indicate a resource not reallocated for URLLC transmission, and a 1434 bit having a value of "1" can indicate the resource which is identified as being reallocated for transmission URLLC. The bits in an ULPI can be equally distributed over the length of time of a RUR that can be of one or more partitions. As a result, each bit in the ULPI represents one or more OFDM symbols.
[00106] [00106] Figure 15 illustrates a diagram of an illustrative bitmap 1530 divided by the subband, according to the aspects of the present description. As illustrated, ULPI 1520 provides a bitmap 1530 including 14 bits, where each bit represents a subband uplink resource by dividing the RUR region equally by 14 bits. In figure 15, bit 1534 identifies a subband uplink resource that is reallocated for URLLC transmission. In addition, bitmap 1530 can be formed by making bit 1532 the most significant bit (MSB), descending from the MSB to make the next bit in the bitmap, and down to the subband adjacent to the MSB, to make the next bit in the bitmap, and so on, as indicated by the arrows. While each bit in figure 14 comprises a single OFDM symbol, each bit in figure 15 comprises two OFDM symbols, providing a time duration of 14 OFDM symbols for the RURs illustrated in figures 14 and 15.
[00107] [00107] In certain respects, ULPI may include a bitmap that represents UL resources in a time division duplexing (TDD) configuration. For example, figure 16 illustrates a diagram of an illustrative bitmap 1630 for a TDD configuration, according to certain aspects of the present description. As illustrated, ULPI 1620 provides a 1630 bitmap including 14 bits, where each bit represents one or more OFDM symbols from a broadband uplink resource by dividing the RUR region by 14 bits as homogeneously as possible. The RUR represented by bitmap 1630 comprises two partitions that have 28 OFDM symbols. The first two downlink symbols 1632 in the subframe can be indicated as being omitted from the bitmap. That is, the UE can interpret the bitmap to indicate whether the uplink or flexible resources are reallocated for URLLC transmission. The most significant bit of the bitmap is bit 1634 which includes two flexible OFDM symbols. The next bit in the bitmap corresponds to the two uplink symbols after bit 1634. Bit 1636 includes an uplink symbol, two downlink symbols, and a flexible symbol. The UE ignores any downlink resources associated with or adjacent to the bit, so that the UE does not take any action regarding downlink resources that may be adjacent to or within the bit. Similarly, the 1638 downlink features are ignored or omitted from the bitmap. Each bit of the last bits, starting with bit 1640, covers a single uplink or flexible symbol.
[00108] [00108] Similar to figure 15, ULPI can include a TDD bitmap that covers subband resources. For example, figure 17 illustrates a diagram of an illustrative bitmap 1730 for a TDD configuration, according to certain aspects of the present description. As illustrated, ULPI 1620 provides a 1630 bitmap including 14 bits, where each bit represents one or more OFDM symbols from a subband uplink resource by dividing the RUR region by 14 bits as homogeneously as possible in the time domains. and frequency. The first four 1632 downlink symbols in the subframe can be indicated as being omitted from the bitmap. As illustrated, the most significant bit is bit 1734, which has six symbols within a subband. The bitmap is formed from MSB 1734 similar to the progression indicated by the arrows in figure 15.
[00109] [00109] In certain aspects, the ULPI RR may include or exclude one or more resources in a physical uplink control channel (PUCCH). For example, figure 18 illustrates an illustrative diagram of uplink channels 1800A and B, according to certain aspects of the present description. As illustrated, RUR 1840 includes channel resources shared on physical uplink (PUSCH) 1850 and PUCCH 1852 resources, which can be long or short PUCCH resources. Long PUCCH resources can span an entire partition as shown in figure 18. In cases where RUR identifies PUCCH resources as being reallocated, the UE can continue to transmit control signaling using PUCCH resources, suspend transmission of control signaling using PUCCH resources, or reduce the power of transmissions using PUCCH resources. Similarly, after the ULPI transmission identifying the PUCCH resources to be allocated, BS can receive uplink signals from the UE eMBB through the PUCCH resources during scheduled transmission and decode the programmed URLLC transmission based, at least in part, on the effect of uplink signals received on scheduled transmissions. For example, BS can cancel the received uplink signals to decode the programmed URLLC transmission. In certain respects, scheduled URLLC transmissions may not use the PUCCH resources of the eMBB UEs that are included in the RUR. That is, although the RUR may include PUCCH resources, these resources may not be reallocated for URLLC transmissions.
[00110] [00110] Figure 19 illustrates an illustrative diagram of uplink channels 1900A and B where PUCCH 1952 resources are included in RUR 1940, according to certain aspects of this description. As illustrated, RUR 1940 prevents PUCCH 1852 resources, which may be short or long PUCCH resources, from being identified as reallocated resources.
[00111] [00111] In certain respects, RUR may include or exclude audible reference signal (SRS) resources similar to PUCCH resources, as previously described. For example, figure 19 illustrates RUR 1940 including SRS 1954 resources. In cases where RUR identifies SRS resources as being reallocated, the UE can continue to transmit SRS using SRS resources, suspend the transmission of SRS, or reduce the transmission power using PUCCH resources. Similarly, after transmitting to ULPI indicating that SRS resources must be reallocated, BS can receive SRS from the UE eMBB and decode the scheduled URLLC transmission based, at least in part, on the SRS effect received on the scheduled URLLC transmission. For example, BS can cancel the received SRS to decode the scheduled URLLC transmission. In certain respects, scheduled URLLC transmissions may not use the SRS resources of the eMBB UEs that are included in the RUR. That is, although the RUR may include SRS resources, these resources may not be reallocated for URLLC transmissions.
[00112] [00112] In certain respects, the RUR may include or exclude other reference signal resources, such as demodulation reference signals (DMRS), channel status information reference signals (CSIRS), and tracking reference signals phase (PTRS). The RUR may include or exclude other physical layer channels, such as physical random access channels (PRACH), and physical broadcast channels (PBCH). The RUR can include or exclude sync signal (SSB) resource blocks. In certain aspects, the resources used by the reference signals, physical channels and synchronization signals of the eMBB UEs, as exemplified above, may or may not be reallocated for URLLC transmissions, even when the resources are included in the RUR.
[00113] [00113] In certain respects, RUR may include the resources of reference signals, physical channels, and synchronization signals as previously described with respect to figures 18 and 19, but these resources should not be reallocated for URLLC transmissions based on predefined rules or radio resource control (RRC) settings. In that case, the allocation of resources from URLLC transmissions can be recombined around those resources. In certain respects, the resources of the reference signals, physical channels, and synchronization signals may possibly be reallocated for URLLC transmissions based on certain pre-defined rules or radio resource control (RRC) settings. In that case, URLLC transmissions can reuse these resources regardless of whether the eMBB UEs continue, suspend or control the power of the transmissions on those resources.
[00114] [00114] In certain respects, the UE may consider that the preemption space applies to adjacent resources in the RUR. That is, perform one or more actions in
[00115] [00115] In certain cases, ULPI may trigger a preemption space in a UE PUSCH transmission, for example, as the UE performs one or more actions based on the resources identified by the suspension of transmissions, as indicated by RUR. If the UE can preserve phase continuity through the preemption space, the BS can decode the received uplink signals having the preemption space. That is, BS decodes the received signals if the UE is able to preserve phase continuity through the preemption space.
[00116] [00116] In cases where the UE is unable to maintain phase continuity, the UE can transmit a demodulation reference signal (DMRS) before and after the preemption space. For example, figure 21 shows a diagram of an illustrative PUSCH transmission, in accordance with certain aspects of the present description. As illustrated, the PUSCH 2102 transmission has a preemption space that divides the transmission into two blocks of data.
[00117] [00117] In certain aspects, ULPI can drill the DMRS. That is, ULPI can identify the resources to be reallocated and that coincide with the transmission of the DMRS UE. In such a situation, BS may determine not to decode at least a portion of the received signals based on a determination that the preemption space pierces an expected DMRS. In cases where the preemption space pierces the first DMRS (for example, DMRS 2160), BS can determine to delete the entire partition of the uplink data. In cases where the preemption space perforates the second DMRS (for example, DMRS 2162), BS can determine to delete the second data block after the expected DMRS. A DMRS can be perforated if one or more DMRS symbols are perforated.
[00118] [00118] In certain aspects, ULPI can identify resources programmed in a semi-persistent manner (SPS) to be reallocated to URLLC. SPS resources are periodic and can be skipped over the frequency domain. Figure 22 illustrates a diagram of an illustrative uplink channel 2200 having SPS features, according to certain aspects of the present description. As illustrated, the uplink channel 2200 includes the SPS disabled features 2270 and the SPS enabled features 2272. In the first partition, a UE is dynamically programmed with PUSCH 2274 features that utilize the disabled SPS features. In the second partition, PUSCH resources 2276 overlap with activated SPS resources 2272, triggering a preemption space 2214. The BS can transmit an ULPI that identifies the SPS resources to be activated and reallocated to URLLCs. The UE can then match the rate around the activated SPS features. In certain respects, BS may signal an uplink grant of PUSCH resources to the UE that excludes SPS resources (for example, PUSCH 2278 resources). The ULPI for SPS features can be a bitmap that identifies one or more SPS features enabled, a situation for SPS features (for example, enabled or disabled), or a change in status for SPS features (for example, enabled for disabled and vice versa).
[00119] [00119] In certain respects, ULPI may include cross-bearer information. That is, ULPI identifies resources corresponding to more than one component carrier. This allows the RAN to reduce the payload size of ULPIs and has a more compact ULPI format that serves more than one component carrier. For example, up to 16 component carriers are supported on certain systems, resulting in a maximum payload size of 224 bits if 14 bits are provided in each ULPI, representing each of the 16 component carriers. A 224-bit ULPI payload may be too large to be included as part of a DCI message. Cross-carrier ULPIs can reduce the payload to indicate uplink preemption through more than one component carrier.
[00120] [00120] As an example of a cross-bearer ULPI, figure 23 illustrates a diagram of a 2330 bit map having cross-bearer information, in accordance with certain aspects of the present description. As illustrated, ULPI 2320 provides a bit map 2330 having 14 bits that correspond to more than one component carrier. The seven most significant bits can correspond to component holder 2302, and the seven least significant bits can correspond to another component holder 2304. That is, the bitmap has two bitmaps (7, 1) for the annotation (M , N), where M provides the number of columns, that is, symbols, of the RUR and N provides the number of rows of the RUR, that is, N indicates whether the bitmaps are broadband or subband. Each bit can correspond to one or more OFDM symbols and a broadband resource. In this example, bitmap 2330 identifies bits 2332 and 2334 as being relocated on different component carriers 2302 and 2304.
[00121] [00121] In certain respects, each cross-carrier ULPI bit can correspond to more than one component carrier. For example, figure 24 shows a diagram of a bit map 2430 having cross-carrier information, according to certain aspects of the present description. As illustrated, ULPI 2420 provides a bit map 2430 having 14 bits (M = 14, N = 1), where each bit corresponds to more than one component carrier. In this example, the UE can treat bit 2432 as identifying both respective resources on component carriers 2402 and 2404 as being reallocated, even if only the resource of component holder 2404 is being reallocated to bit 2432. That is, the UE it can assume that both resources on component carriers 2402 and 2404 are being reallocated regardless of whether the resources are, in fact, being reallocated. ILLUSTRATIVE DOWNLINK PREEMPTION INDICATION
[00122] [00122] In certain respects, the RAN may signal to an UE eMBB that the downlink resources have been reallocated for URLLC transmissions through a downlink preemption indication (DLPI). DLPI can identify downlink resources that have been relocated in the past. That is, DLPI can indicate to the UE that it discards the signals received through the resources identified in the reference downlink region (RDR). Similar to the ULPI previously discussed, DLPI can also include cross-carrier information, which allows the RAN to serve multiple component carriers or bandwidth parts for downlink preemption with a reduced payload.
[00123] [00123] Aspects presented here provide techniques for signaling a downlink preemption indication (DLPI) to a UE of a first type (for example, an UE eMBB) to reallocate the downlink channel resources to a UE of a second type (e.g. UE URLLC).
[00124] [00124] Figure 25 is a flow chart illustrating the illustrative operations 2500 that can be performed, for example, by a base station and / or radio access network (for example, BS 110 in figure 1), to implement an indication of downlink preemption (DLPI), in accordance with certain aspects of this description. 2500 operations can be implemented as software components that run and run on one or more processors (for example, processor 440 in figure 4). Additionally, the transmission and reception of signals by the BS in the 2500 operations can be activated, for example, by one or more antennas (for example, the antennas 434 of figure 4). In certain aspects, the transmission and / or reception of signals by the BS can be implemented through a bus interface of one or more processors (for example, processor 440) obtaining and / or sending signals.
[00125] [00125] 2500 operations may start, in 2502, by BS determining that the resources allocated for a transmission to a first UE (for example, UE URLLC), of a first type, overlap with the downlink channel resources allocated to a according to UE, of a second type (for example, UE eMBB), In 2504, BS signals, based on the determination in 2502, an indication of downlink preemption (DLPI) for the second UE, which comprises the crossed carrier information and identifies at least some of the overlay features.
[00126] [00126] Figure 26 is a flow chart illustrating the illustrative operations 2600 that can be performed, for example, by a UE (for example, UE 120), to implement ULPI reception and processing, in accordance with certain aspects of this description. Operations 2600 can be implemented as software components that run and run on one or more processors (for example, processor 480 in figure 4). In addition, the transmission and reception of signals by the UE in operations 2600 can be activated, for example, by one or more antennas (for example, antennas 452 of figure 4). In certain aspects, the transmission and / or reception of signals by the UE can be implemented via a bus interface of one or more processors (for example, processor 480) which obtains and / or sends the signals.
[00127] [00127] Operations 2600 may start, in 2602, by the UE receiving a downlink signal from a base station (BS) using one or more downlink channel resources allocated to a UE of a first type (for example, UE eMBB) . In 2604, the first UE receives a downlink preemption indication (DLPI) which comprises BS cross-carrier information. In 2606, the first UE takes one or more actions based on one or more resources identified in the DLPI, where the one or more resources overlap with the resources allocated for a scheduled transmission to a second UE of a second type (for example, UE URLLC). For example, the UE can discard the signals received by the resources identified during the scheduled transmission as these signals may be contaminated with URLLC interference.
[00128] [00128] In certain respects, the DLPI may include cross-bearer information, which may be formed in a manner similar to the cross-bearer information previously discussed for the DLPI in figures 23 and 24. For example, figure 27 illustrates a diagram of a 27830 bitmap having cross-carrier information, in accordance with certain aspects of the present description. As illustrated, the DLPI 2720 provides a 2730 bitmap having 14 bits that correspond to more than one component carrier. The seven most significant bits can correspond to the component carrier 2702, and the seven least significant bits can correspond to the other component carrier 2704. That is, the bitmap includes two (M = 7, N = 1) bit maps as described here with reference to figure 23. Each bit can correspond to one or more OFDM symbols and a broadband resource. In this example, bitmap 2730 identifies bits 2732 and 2734 as being relocated on different component carriers 2702 and
[00129] [00129] In certain respects, each bit of the cross-bearer DLPI may correspond to more than one component carrier similar to the bit map of figure 24. For example, figure 28 shows a diagram of a 2830 bit map having information of cross-bearer, in accordance with certain aspects of this description. As illustrated, DLPI 2820 provides a bit map 2830 having 14 bits (M = 14, N = 1), where each bit corresponds to more than one component carrier. In this example, the UE can treat bit 2832 as identifying the respective resources on component holders 2802 and 2804 as being reallocated, regardless of whether the resources were, in fact, reallocated.
[00130] [00130] In certain aspects, the DLPI can be spread to more than the UE having the same carrier indicator field (CIF). That is, the DLPI can be unique to a specific CIF value assigned to one or more UEs. The CIF can provide a basis for identifying the reference downlink region in the DLPI. That is, RDE can be relative to the CIF assigned to a UE. In certain respects, the DLPI may be exclusive to a UE having a specific CIF value. That is, DLPI can be applicable to a single UE and its CIF.
[00131] [00131] In certain respects, the cross-bearer DLPI may include multiple distinct DLPI bitmaps, each of which applies to one or more UEs having the same CIF, that is, the same cross-bearer configuration. UEs having a specific CIF value can be provided and / or preconfigured with an indication that allows UEs to locate their DLPI bitmap on the cross-bearer DLPI.
[00132] [00132] Each bit of the DLPI bitmap can represent several resource parameters. A bit from the bitmap can correspond to a broadband resource, a subband resource, or one or more OFDM symbols of an RDR, as described here with respect to figures 14 to 17. The DLPI can also employ the same TDD techniques described here with respect to figures 16 and 17.
[00133] [00133] Figure 29 illustrates a wireless communications device 2900 that can include various components (for example, corresponding to the media components plus function) configured to perform the operations for the techniques described here, such as the operations illustrated in one or more of figures 8, 9, 25 and 26. The 2900 communications device includes a 2900 processing system coupled to a 2910 transceiver. The 2910 transceiver is configured to transmit and receive signals to the 2900 communications device via a 2912 antenna, just like the various signs described here. The 2902 processing system can be configured to perform the processing functions for the 2900 communications device, including the processing signals received and / or to be transmitted by the 2900 communications device.
[00134] [00134] The 2902 processing system includes one or more 2904 processors coupled to a computer-readable medium 2906 via a 2908 bus. In certain aspects, the computer-readable medium 2906 is configured to store instructions executable by computer that, when executed by processor 2904, causes processor 2904 to perform the operations illustrated in one or more of figures 8, 9, 25 and 26, or other operations to perform the various techniques discussed here.
[00135] [00135] In certain respects, the processing system 2902 additionally includes a receiving component 2914 to perform the receiving operations illustrated in one or more of Figures 8, 9, 25 and 26. Additionally, the processing system 2902 includes a transmission component 2916 for carrying out the transmission operations illustrated in one or more of Figures 8, 9, 25 and 26. In addition, the processing system 2902 includes a carrying out component 2918 for carrying out the carrying out operations illustrated in one or more figures 8, 9, 25 and 26. In addition, processing system 2902 includes a determination component 1020 for performing the determination operations illustrated in one or more of figures 8, 9, 25 and 26. The receiving component 2914 , the transmission component 2916, the realization component 2918, and the determining component 2920 can be coupled to processor 2904 via bus 2904. Processor 2904 can obtain or send send signals across bus 2908 to perform the operations illustrated in one or more of Figures 8, 9, 25, and 26. In certain respects, the receiving component 2914, the transmitting component 2916, the realizing component 2918 and the component determination 2920 can be hardware circuits. In certain aspects, the receiving component 2914, the transmitting component 2916, the realizing component 2918 and the determining component 2920 can be software components that are executed and run on the processor 2904.
[00136] [00136] The techniques described here provide advantages for URLLC systems. In order to improve the latency and reliability of URLLC systems, the RAN can signal to one or more UEs, through ULPI, the suspension of transmissions or the reduction of transmission power of transmissions during scheduled URLLC transmissions. This can reduce the interference found in the BS and improve the signal-to-noise ratio of URLLC signals. In addition, cross-carrier information allows the RAN to serve more than one carrier component, reducing signaling overhead to precede resources as described here.
[00137] [00137] The methods described here comprise one or more steps or actions to achieve the described method. The method steps and / or actions can be interchanged with one another without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be modified without departing from the scope of the claims.
[00138] [00138] As used here, a phrase that refers to "at least one among" a list of items refers to any combination of these items, including singular elements. As an example, "at least one of: a, b or c" should cover a, b, c, ab, ac, bc and a- bc, in addition to any combination with multiples of the same element (for example, aa, aaa , aab, aac, abb, a-cc, bb, bbb, bbc, cc and ccc or any order of a, b and c).
[00139] [00139] As used here, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, querying (for example, querying a table, database or other data structure), determining, and the like. In addition, "determining" may include receiving (for example, receiving information), accessing (for example, accessing data in a memory) and the like. In addition, "determining" may include resolving, selecting, choosing, establishing and the like.
[00140] [00140] The previous description is provided to allow anyone skilled in the art to practice the various aspects described here. Various modifications of these aspects will be readily apparent to those skilled in the art, and the generic principles defined here can be applied to other aspects. As such, claims should not be limited to the aspects illustrated here, but the full scope consistent with language claims should be agreed, where reference to an element in the singular should not mean "one and only one" unless specifically mentioned, but, instead, to "one or more". Unless specifically stated otherwise, the term "some" refers to one or more. All structural and functional equivalences to the elements of the various aspects described throughout this description, which are known or become known to those skilled in the art, are expressly incorporated herein by reference and are to be encompassed by the claims. In addition, nothing described here should be dedicated to the public regardless of whether such a description is explicitly mentioned in the claims. No claim element should be considered under the provision of 35 USC § 112, sixth paragraph, unless the element is expressly mentioned using the phrase "means for" or in the case of a method claim, the element is mentioned using the phrase "step to".
[00141] [00141] The various method operations described above can be performed by any suitable means capable of carrying out the corresponding functions. The means may include various hardware and / or software components and / or modules, including, but not limited to, a circuit, an application specific integrated circuit (ASIC), or processor. Generally, where there are transactions illustrated in the figures, these transactions may have components of means plus corresponding counterpart function with similar numbering.
[00142] [00142] For example, means for transmitting (or means for sending for transmission) or means for signaling may comprise an antenna 434 of base station 110 or antennas 452 of user equipment 120 illustrated in figure 4. Means for receiving (or means for obtain) may comprise antennas 343 of base station 110 or antennas 452 of user equipment 120, illustrated in figure 4. Means for processing, means for obtaining, means for determining, means for carrying out one or more actions, or means for identifying may comprise a processing system, which may include one or more processors, such as the MIMO 436 detector, the MIMO TX 430 processor, the TX 420 processor and / or the base station controller 440 or the MIMO 456 detector, the MIMO TX processor 466, TX processor 464 and / or controller 480 of user equipment 120 illustrated in figure 4.
[00143] [00143] In some cases, instead of actually transmitting a signal, a device may have an interface to send a signal for transmission (a means of sending). For example, a processor can send a signal, via a bus interface, to a radio frequency (RF) front end for transmission. Similarly, instead of actually receiving a signal, a device may have an interface for obtaining a signal received from another device (a means of obtaining it). For example, a processor can obtain (or receive) a signal, via a bus interface, from an RF front end for reception. In some cases, an interface, to send a signal for transmission, and an interface, to obtain a signal, can be integrated as a single interface.
[00144] [00144] As used here, the terms "transmit" and "receive" encompass a wide variety of actions. For example, "transmit" can include send (for example, send a signal to be transmitted), signal and the like. In addition, "receiving" may include obtaining (for example, getting a signal), accessing (for example, accessing data in a memory), sampling (for example, sampling a signal) and the like.
[00145] [00145] The various logic blocks, modules and illustrative circuits described in relation to this description can be implemented or carried out with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable port set (FPGA), or other programmable logic device (PLD), discrete port or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described here. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any commercially available 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, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other similar configuration.
[00146] [00146] If implemented in hardware, an illustrative hardware configuration can comprise a processing system in a wireless node.
[00147] [00147] If implemented in software, the functions can be stored or transmitted as one or more instructions or code in a computer-readable medium. Software should be considered broadly as meaning instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise. Computer-readable medium includes both the computer storage medium and the communication medium, including any medium that facilitates the transfer of a computer program from one place to another. The processor may be responsible for bus management and processing in general, including running software modules stored in machine-readable storage media. A computer-readable storage medium can be coupled to a processor, so that the processor can read information from and write information to the storage medium. Alternatively, the storage medium can be integral to the processor. For example, the machine-readable medium may include a transmission line, a data-modulated carrier wave and / or a computer-readable storage medium with instructions stored on it, separate from the wireless node, all of which can be accessed by the processor through the bus interface. Alternatively, or in addition, the machine-readable medium, or any part of it, can be integrated into the processor, as is the case with general log files and / or temporary memory. Examples of machine-readable storage media may include, for example, RAM (Random Access Memory), flash memory, ROM (Read-Only Memory), PROM (Programmable Read-Only Memory), EPROM (Read-Only Memory) Programmable and Erasable), EEPROM (Read Only Electrically Programmable and Erasable), registers, magnetic disks, optical disks, hard disks, or any other suitable storage medium, or any combination thereof. The machine-readable medium can be embodied in a computer program product.
[00148] [00148] A software module can comprise a single instruction, or many instructions, and can be distributed across several different code segments, between different programs and across multiple storage media. The computer-readable medium may comprise several software modules. The software modules include instructions that, when executed by a device, such as a processor, cause the processing system to perform various functions. Software modules can include a transmit module and a receive module. Each software module can reside on a single storage device or can be distributed across multiple storage devices. For example, a software module can be loaded into RAM from a hard drive when a trigger event occurs. During the execution of the software module, the processor can load some of the instructions in the temporary memory to increase the access speed. One or more lines of temporary memory can then be loaded into a general log file for execution by the processor. When referring to the functionality of a software module below, it will be understood that such functionality is implemented by the processor when executing instructions from that software module.
[00149] [00149] In addition, any connection is properly called a computer-readable medium. For example, if the software is transmitted from a network site, server or other remote source, using a coaxial cable, a fiber optic cable, a twisted pair, a digital subscriber line (DSL), or wireless technologies , such as infrared (IR), radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of middle. Floppy disk and disk, as used here, include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk, and Blu-ray disk, where floppy disks normally reproduce data magnetically, while disks reproduce data data optically with lasers. Thus, in some respects, the computer-readable medium may comprise a non-transitory computer-readable medium (for example, a tangible medium). In addition, for other aspects, the computer-readable medium may comprise a transient computer-readable medium (for example, a signal). Combinations of the above can also be included in the scope of computer-readable medium.
[00150] [00150] Thus, certain aspects may comprise a computer program product to perform the operations presented here. For example, such a computer program product may comprise a computer-readable medium having instructions stored (and / or encoded) therein, the instructions being executable by one or more processors to perform the operations described herein.
[00151] [00151] Additionally, it should be appreciated that the modules and / or other suitable means to carry out the methods and techniques described here can be downloaded and / or otherwise obtained by a user terminal and / or base station, as applicable. For example, such a device can be coupled to a server to facilitate the transfer of means to carry out the methods described here. Alternatively, several methods described here can be provided via the storage media (for example, RAM, ROM, a physical storage medium, such as a compact disc (CD) or floppy disk, etc.), so that a user terminal and / or base station can obtain the various methods after coupling or supplying the storage media to the device. In addition, any other technique suitable for providing the methods and techniques described here for a device can be used.
[00152] [00152] It should be understood that the claims are not limited to the precise configuration and components illustrated above. Various modifications, changes and variations can be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

权利要求:
Claims (1)
[1]
1. A method for wireless communication by a first user equipment (UE), comprising: signaling an uplink signal to a base station (BS) through the uplink channel resources allocated to the first UE of a first type; receive a BS uplink preemption indication (ULPI); and perform one or more actions based on one or more resources identified in the ULPI, where the one or more resources overlap with the resources allocated for a transmission scheduled by a second EU of a second type.
2. Method, according to claim 1, in which performing one or more actions comprises: reducing a transmission energy during scheduled transmission; suspend a transmission by the first UE during the scheduled transmission; apply one or more actions to a resource that is adjacent to one or more resources identified in the ULPI; identify a physical uplink control channel (PUCCH) resource in one or more ULPI resources and signal the uplink control information through the PUCCH resource during scheduled transmission; identify an audible reference signal (SRS) resource in one or more ULPI resources and signal the SRS during scheduled transmission; identify the SRS resource in one or more resources and suspend the transmission of the SRS during scheduled transmission; or identify the semi-persistent programmed resources (SPS) activated in one or more resources in the ULPI and combine the rate of a transmission around the SPS resources activated during the scheduled transmission.
3. Method, according to claim 1, in which receiving the ULPI comprises receiving the ULPI periodically after one or more symbols or partitions.
4. Method, according to claim 1, in which one or more resources identified in the ULPI are related to a time deviation, a time duration, and one or more resources of a reference uplink region.
5. Method according to claim 1, in which the ULPI is specific to a UE.
6. Method according to claim 1, in which the ULPI applies to a plurality of UEs.
7. Method according to claim 1, in which the ULPI comprises a bitmap that identifies the one or more resources to be used by the wireless device during the scheduled transmission.
8. Method according to claim 7, in which a bit of the bitmap corresponds to at least one of a broadband resource of a reference uplink region (RUR), a subband resource of RUR, or one or more RUR symbols.
9. Method according to claim 7, in which the bitmap indicates the omission of downlink resources adjacent to the uplink resources in a time division duplexing (TDD) configuration.
A method according to claim 1, further comprising signaling uplink signals with a space in the signals as indicated by ULPI and preserving a phase continuity across the space.
11. Method according to claim 1, further comprising signaling uplink signals from the first UE with a space in the signals as indicated by ULPI, where the signals comprise at least one demodulation reference signal (DMRS).
12. The method of claim 1, further comprising signaling the uplink signals with a space in the signals as indicated by ULPI, where the space pierces a demodulation reference signal (DMRS) that is expected to receive.
13. Method according to claim 1, in which the programmed transmission uses the resources programmed in a semi-persistent manner (SPS).
14. Method, according to claim 13, in which ULPI comprises a bitmap that identifies one or more activated SPS resources, a situation of the SPS resources, or a change in the situation of the SPS resources.
15. Method, according to claim 1, in which ULPI identifies resources corresponding to more than one component carrier or more than a part of bandwidth (BWP).
16. Method according to claim 1, in which receiving the ULPI comprises receiving the ULPI through a location other than at least one of a search space or a control resource region with respect to a downlink preemption indication (DLPI).
17. Method according to claim 16, in which the ULPI is signaled using a temporary radio network identifier (RNTI) distinct from an RNTI used to signal the DLPI.
18. Method, according to claim 1, in which receiving the ULPI comprises receiving the ULPI using the same location of at least one of a search space or a control resource region and the same temporary radio network identifier ( RNTI) than a downlink preemption indication (DLPI), where ULPI includes an indication that serves for uplink preemption.
19. A method for wireless communication by a base station (BS), comprising: determining that the resources allocated for a transmission programmed by a first user equipment (UE) of a first type overlap with the uplink channel resources allocated for a second EU of a second type; and signal, based on the determination, an indication of uplink preemption (ULPI) for the second UE, which identifies at least some of the overlay features.
20. Method according to claim 19, in which the ULPI signaling comprises the periodic ULPI signaling after one or more symbols or partitions.
21. Method, according to claim 19, in which one or more resources identified in the ULPI are related to a time deviation, a time duration, and one or more resources of a reference uplink region.
22. The method of claim 19, in which the ULPI is specific to a UE.
23. Method according to claim 19, in which the ULPI applies to a group of UEs.
24. Method, according to claim 19, in which the ULPI comprises a bitmap that identifies the one or more resources to be used during the programmed transmission.
25. The method of claim 24, wherein a bit of the bitmap corresponds to a broadband resource of a reference uplink region (RUR), a subband resource of RUR, or one or more symbols of the RUR.
26. Method according to claim 24, in which the bitmap indicates the omission of the downlink resources adjacent to the uplink resources in a time division duplexing (TDD) configuration.
27. The method of claim 19, further comprising: receiving uplink signals from the second UE with a space in the signals as indicated by ULPI; and decoding the received signals if the second UE is able to preserve phase continuity through space.
28. Method, according to claim 19, in which ULPI identifies resources corresponding to more than one component carrier or more than a part of bandwidth (BWP).
29. The method of claim 19, wherein signaling the ULPI comprises signaling the ULPI through a location other than at least one of a search space or a control feature region with respect to a downlink preemption indication (DLPI).
30. The method of claim 29, in which the ULPI is signaled using a temporary radio network identifier (RNTI) distinct from an RNTI used to signal the DLPI.
31. Method, according to claim 19, in which signaling the ULPI comprises signaling the ULPI using the same location of at least one of a search space or a control resource region and the same temporary network identifier. radio (RNTI) than a downlink preemption indication (DLPI), where the ULPI includes an indication that it is for uplink preemption.
32. Method according to claim 19, in which ULPI excludes at least one of one or more physical uplink control channel (PUCCH) resources, one or more audible reference signal (SRS) resources, one or more more physical random access channel (PRACH) resources, one or more physical broadcast channel (PBCH) resources, one or more demodulation reference signal resources (DMRS), one or more synchronization signal block resources ( SSB), one or more phase tracking reference signal resources (PTRS) and one or more channel state information reference signal resources (CSIRS).
33. The method of claim 19, further comprising: receiving uplink signals from the second UE during programmed transmission, where the received signals comprise an audible reference signal (SRS); receive the scheduled transmission from the wireless device; decode the scheduled transmission based,
at least in part, in an effect of the SRS received on the scheduled transmission.
34. The method of claim 19, further comprising: receiving uplink signals from the second UE with a space in the signals as indicated by ULPI, where the received signals comprise at least one of a demodulation reference signal (DMRS); and decoding the received signals based on at least one DMRS.
35. The method of claim 19, further comprising: receiving uplink signals from the second UE with a space in the signals, as indicated by ULPI; determining that the space pierces a demodulation reference signal (DMRS) that is expected to receive; and determining not to decode at least part of the received signals based on the determination that the space pierces the expected DMRS.
36. Method according to claim 19, in which the programmed transmission uses the programmed resources in a semi-persistent manner (SPS).
37. Method, according to claim 36, in which ULPI comprises a bitmap that identifies one or more activated SPS resources, a situation of the SPS resources, or a change in the situation of the SPS resources.
38. An apparatus for wireless communication, comprising: a processing system configured to determine that the resources allocated for a scheduled transmission, by a first user equipment (UE), of a first type overlap with the allocated uplink channel resources, for a second EU, of a second type; and an interface configured to send, based on the determination, an uplink preemption indication (ULPI), to the second UE, which identifies at least some of the overlapping resources.
39. An apparatus for wireless communication, comprising: an interface configured to: send an uplink signal to a base station (BS) through uplink channel resources allocated to a first user equipment (UE) of a first type; and obtaining an uplink preemption indication (ULPI) from BS; and a processing system configured to perform one or more actions based on one or more resources identified in the ULPI, where the one or more resources overlap with the resources allocated for a transmission scheduled by a second UE of a second type.
40. Method for wireless communication by a base station (BS), comprising: determining that the resources allocated for a transmission to a first user equipment (UE) of a first type overlap with the downlink channel resources allocated for a second EU of a second type; and signaling, based on the determination, a downlink preemption indication (DLPI), for the second UE that comprises cross-carrier information and identifies at least some of the overlay features.
41. Method according to claim 40, in which the cross-bearer information indicates that the resources identified in the DLPI correspond to more than one component bearer.
42. The method of claim 40, wherein the DLPI comprises one or more cross-carrier bit maps, where each bit map applies to one or more UEs having a specific value of a carrier indicator field (CIF ).
43. The method of claim 40, wherein the DLPI is unique to a specific value of a carrier indicator field (CIF) designated for one or more UEs.
44. Method according to claim 40, in which the DLPI is exclusive to the first UE having a specific value of a carrier indicator field (CIF).
45. The method of claim 40, wherein signaling the DLPI comprises signaling the DLPI through a location other than at least a search space or a control feature region with respect to an uplink preemption indication (ULPI ).
46. Method according to claim 45, in which the DLPI is signaled using a temporary radio network identifier (RNTI) distinct from the RNTI used to signal the ULPI.
47. Method according to claim 40, in which signaling the DLPI comprises signaling the DLPI using the same location of at least one of a search space or a control resource region and the same temporary radio network identifier ( RNTI) than an uplink preemption indication (ULPI), where the DLPI includes an indication that serves for downlink preemption.
48. Method for wireless communication by a first user equipment (UE), comprising: receiving a downlink signal from a base station (BS) using one or more downlink channel resources allocated to the first UE of a first type; receiving a downlink preemption indication (DLPI) comprising BS cross-carrier information; and carry out one or more actions based on one or more resources identified in the DLPI, where the one or more resources overlap with the resources allocated for a scheduled transmission to a second UE of a second type.
49. Method according to claim 48, in which the cross-bearer information indicates that the resources identified in the DLPI correspond to more than one component bearer.
50. The method of claim 48, wherein the DLPI comprises one or more cross-carrier bit maps, where each bit map is applicable to one or more UEs having a specific value of a carrier indicator field (CIF ).
51. Method according to claim 48, in which the DLPI is unique to a specific value of a carrier indicator field (CIF) designated for one or more UEs.
52. The method of claim 48, in which the DLPI is exclusive to the first UE having a specific value of a carrier indicator field (CIF).
53. The method of claim 48, wherein receiving the DLPI comprises receiving the DLPI through a location other than at least one of a search space or a control feature region with respect to an uplink preemption indication (ULPI).
54. Method according to claim 54, in which receiving the DLPI comprises receiving the DLPI using the same location as at least one of a search space or a control resource region and the same temporary radio network identifier ( RNTI) than an uplink preemption indication (ULPI), where the DLPI includes an indication that it is for downlink preemption.
56. An apparatus for wireless communication, comprising: a processing system configured to determine that the resources allocated for a transmission to a first user equipment (UE) of a first type overlap with the downlink channel resources allocated to a second UE a second type; and an interface configured to send, based on the determination, a downlink preemption indication (DLPI) to the second UE, which comprises cross-carrier information and identifies at least some of the overlapping resources.
57. An apparatus for wireless communication, comprising: an interface configured to: obtain a downlink signal from a base station (BS) using one or more downlink channel resources allocated to a first user equipment (UE) of a first type ; and obtaining a downlink preemption indication (DLPI) comprising cross-carrier information from the BS; and a processing system configured to perform one or more actions based on one or more resources identified in the DLPI, where the one or more resources overlap with the resources allocated for a scheduled transmission to a second UE of a second type.

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BR112020010411A2|2020-11-24|power control for communication technology of dual radio access |

同族专利:

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公开号 | 公开日

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JP2021513797A|2021-05-27|

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KR20200119259A|2020-10-19|

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US20190254081A1|2019-08-15|

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AU2019221543A1|2020-08-06|

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EP3753348A1|2020-12-23|

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TW201939994A|2019-10-01|

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CN111713161A|2020-09-25|

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WO2019160969A1|2019-08-22|

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EP3777385A4|2018-04-04|2021-04-14|ZTE Corporation|Methods, apparatus and systems for preempting uplink transmission resource in a wireless communication|

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US10764833B2|2018-04-16|2020-09-01|Qualcomm Incorporated|Uplink preemption or dynamic power control for mobile broadband and low latency communication multiplexing|

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US20200314775A1|2019-03-29|2020-10-01|Huawei Technologies Co., Ltd.|Systems and methods for ran slicing synchronization channel design|

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WO2021035392A1|2019-08-23|2021-03-04|Qualcomm Incorporated|Techniques for uplink control informationbased uplink preemption indication transmissions|

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WO2021097590A1|2019-11-18|2021-05-27|Zte Corporation|Systems and methods for determining information indicative of cancelation|

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WO2021201754A1|2020-04-02|2021-10-07|Telefonaktiebolaget Lm Ericsson |Reference resource for downlink preemption in nr-u|

法律状态:
2021-12-07| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US201862630546P| true| 2018-02-14|2018-02-14|

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US62/630,546|2018-02-14|

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US16/273,886|2019-02-12|

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US16/273,886|US20190254081A1|2018-02-14|2019-02-12|Uplink and downlink preemption indications|

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PCT/US2019/017869|WO2019160969A1|2018-02-14|2019-02-13|Uplink and downlink preemption indications|

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