Sidelink communication resource signaling

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a base station (BS) may receive an indication of a sidelink communication queued for communication between a source user equipment (UE) and a target UE. The BS may send a sidelink resource grant via another link to identify one or more resources on a sidelink for sidelink communication between a source UE and a target UE. Many other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 876,411, filed on July 19, 2019, entitled “SIDELINKE COMMUNICATION RESOURCE SIGNALING,” and U.S. Non-Provisional Patent Application No. 16 / 928,709, filed on July 14, 2020, entitled “SIDELINKE COMMUNICATION RESOURCE SIGNALING,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and techniques and apparatus for sidelink communication resource signaling. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless communication network may include multiple base stations (BS) that can support communication of multiple user equipments (UEs). User equipments (UEs) may communicate with base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to a communication link from a BS to a UE, and an uplink (or reverse link) refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at municipal, national, regional and even global levels. New Radio (NR), also known as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR aims to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology and carrier aggregation. However, as the demand for mobile broadband access continues to increase, further improvements in LTE and NR technologies are needed. Summary of the invention

[0007] In some aspects, a wireless communication method performed by a target user equipment (UE) may include: receiving a sidelink resource grant from a serving base station (BS), the sidelink resource grant identifying one or more resources for receiving a sidelink from a source UE; activating monitoring of a sidelink based at least in part on receiving the sidelink resource grant; and monitoring one or more resources on the sidelink to receive sidelink communications from the source UE based at least in part on activating the monitoring of the sidelink.

[0008] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to receive a sidelink resource grant from a serving BS, the sidelink resource grant identifying one or more resources for receiving a sidelink from a source UE; activate monitoring of a sidelink based at least in part on receiving the sidelink resource grant; and monitor one or more resources on the sidelink to receive sidelink communications from the source UE based at least in part on activating monitoring of the sidelink.

[0009] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to receive a sidelink resource grant from a serving BS, the sidelink resource grant identifying one or more resources for receiving a sidelink from a source UE; activate monitoring of a sidelink based at least in part on receiving the sidelink resource grant; and monitor one or more resources on the sidelink to receive sidelink communications from the source UE based at least in part on activating monitoring of the sidelink.

[0010] In some aspects, an apparatus for wireless communication may include components for receiving a side link resource grant from a serving BS, the side link resource grant identifying one or more resources for receiving a side link from a source UE; components for activating monitoring of a side link based at least in part on receiving the side link resource grant; and components for monitoring one or more resources on the side link to receive side link communications from the source UE based at least in part on activating monitoring of the side link.

[0011] In some aspects, a wireless communication method performed by a BS may include: receiving an indication of sidelink communications queued for communication between a source UE and a target UE; and sending a sidelink resource grant via another link to identify one or more resources on the sidelink for sidelink communications between the source UE and the target UE.

[0012] In some aspects, a BS for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to receive an indication of a sidelink communication queued for communication between a source UE and a target UE; and send a sidelink resource grant via another link to identify one or more resources on the sidelink for sidelink communication between the source UE and the target UE.

[0013] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a BS, the one or more instructions may cause the one or more processors to receive an indication of a sidelink communication queued for communication between a source UE and a target UE; and send a sidelink resource grant via another link to identify one or more resources on the sidelink for sidelink communication between the source UE and the target UE.

[0014] In some aspects, an apparatus for wireless communication may include components for receiving an indication of sidelink communications queued for communication between a source UE and a target UE; and components for sending a sidelink resource grant via another link to identify one or more resources on the sidelink for sidelink communication between the source UE and the target UE.

[0015] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems, as fully described herein with reference to the drawings and / or description.

[0016] The features and technical advantages of examples according to the present disclosure have been outlined quite broadly above so that the specific embodiments below may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, their organization and methods of operation, and related advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for the purpose of illustration and description and not as a definition of claim limitations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to be able to understand the above features of the present disclosure in detail, a more specific description briefly summarized above can be obtained by reference to multiple aspects, some of which are shown in the accompanying drawings. However, it should be noted that the drawings only show certain typical aspects of the present disclosure and should not be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0018] Figure 1 is a block diagram illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0019] Figure 2 is a block diagram illustrating an example of a base station communicating with a UE in a wireless communication network according to various aspects of the present disclosure.

[0020] Figure 3A is a block diagram illustrating an example of a frame structure in a wireless communication network according to various aspects of the present disclosure.

[0021] Figure 3B is a block diagram illustrating an example synchronous communication hierarchy in a wireless communication network in accordance with various aspects of the present disclosure.

[0022] Figure 4 is a block diagram illustrating an example slot format with a normal cyclic prefix in accordance with various aspects of the present disclosure.

[0023] Figure 5 An example logical architecture of a distributed radio access network (RAN) according to various aspects of the present disclosure is shown.

[0024] Figure 6 An example physical architecture of a distributed RAN according to various aspects of the present disclosure is shown.

[0025] Figure 7 Examples of sidelink communication resource signaling according to various aspects of the present disclosure are shown.

[0026] Figure 8Example processes, such as those performed by a base station, are shown according to various aspects of the present disclosure.

[0027] Fig. 9 Example processes, for example performed by a target user device, according to various aspects of the present disclosure are shown.

[0028] Fig.10 is a block diagram of an example apparatus for wireless communications in accordance with various aspects of the present disclosure.

[0029] Fig.11 is a block diagram of an example apparatus for wireless communications in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION

[0030] The various aspects of the present disclosure will be described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. Based at least in part on the teachings of this article, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method, which uses other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein to practice. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0031] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms and / or the like (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0032] It should be noted that although various aspects may be described herein using terminology generally associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied to other generation-based communication systems, such as 5G and higher, including NR technologies.

[0033] Figure 1is a diagram showing a wireless network 100 in which various aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or other wireless network, such as a 5G or NR network. The wireless network 100 may include a plurality of BSs 110 (shown as BSs 110a, BSs 110b, BSs 110c, and BSs 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0034] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5GB NB", and "cell" may be used interchangeably herein.

[0035] In some aspects, the cells are not necessarily stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections using any suitable transport network, virtual networks, etc.

[0036] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, a relay station 110d may communicate with the macro BS 110a and the UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0037] The wireless network 100 may be a heterogeneous network including different types of BSs, such as a macro BS, a pico BS, a femto BS, a relay BS, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0038] A network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0039] UE 120 (e.g., 120a, 120b, 120c, 120d, 120e) can be dispersed throughout the wireless network 100, and each UE can be fixed or mobile. UE can also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biosensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0040] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide connectivity to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120, such as processor components, memory components, etc.

[0041] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0042] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using BS 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using point-to-point (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0043] As mentioned above, providing Figure 1 As an example. Other examples may differ from the Figure 1 As described.

[0044] Figure 2 A block diagram of a design 200 of a base station 110 and a UE 120 is shown, which may be Figure 1 Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T ≥ 1 and R ≥ 1.

[0045] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the one or more MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial domain processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be used to generate synchronization signals to convey additional information.

[0046] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. Receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0047] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., including reports of RSRP, RSSI, RSRQ, CQI, etc.) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-coded and decoded by a TX MIMO processor 266, if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and provide the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0048] As described in more detail elsewhere herein, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other one or more components of the base station 110 may perform one or more techniques associated with sidelink communication resource signaling. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component or components of may perform or direct e.g. Figure 8 The process of 800 Fig. 9 The operations of process 900 and / or other processes described herein may be performed by the memory 242 and 282. The memory 242 and 282 may store data and program codes for the base station 110 and the UE 120, respectively. In some aspects, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when executed by one or more processors of the base station 110 and / or the UE 120, the one or more instructions may perform or direct, for example, Figure 8 The process of 800 Fig. 9 The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0049] In some aspects, the target UE 120 may include components for receiving a sidelink resource grant from the serving BS identifying one or more resources for receiving a sidelink from the source UE, components for activating monitoring of the sidelink based at least in part on receiving the sidelink resource grant, components for monitoring the one or more resources on the sidelink to receive sidelink communications from the source UE based at least in part on activating monitoring of the sidelink, etc. In some aspects, these components may include a combination of Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0050] In some aspects, the base station 110 may include means for receiving an indication of a sidelink communication queued for communication between a source UE and a target UE, means for sending a sidelink resource grant via another link to identify one or more resources for sidelink communication between the source UE and the target UE on the sidelink, etc. In some aspects, these means may include combining Figure 2 One or more components of the base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0051] As mentioned above, providing Figure 2As an example. Other examples may be related to Figure 2 Described differently.

[0052] Figure 3A An example frame structure 300 for frequency division duplex (FDD) in a telecommunication system (e.g., NR) is shown. The transmission timeline for each of the downlink and uplink may be divided into units of radio frames (sometimes referred to as frames). Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be divided into a set of Z (Z ≥ 1) subframes (e.g., indexed 0 to Z-1). Each subframe may have a predetermined duration (e.g., 1 ms) and may include a set of time slots (e.g., Figure 3A Each subframe 2 is shown in m time slots, where m is a number used for transmission, such as 0, 1, 2, 3, 4, etc.). Each time slot may include a group of L symbol periods. For example, each time slot may include fourteen symbol periods (e.g., Figure 3A In some aspects, the scheduling unit for FDD may be frame-based, subframe-based, slot-based, symbol-based, etc. ...

[0053] Although some techniques are described herein in conjunction with frames, subframes, time slots, etc., these techniques may also be applied to other types of wireless communication structures, and terms other than "frames," "subframes," "time slots," etc. may be used to refer to these structures in 5G NR. In some aspects, a wireless communication structure may refer to a periodic time-limited communication unit defined by a wireless communication standard and / or protocol. Additionally or alternatively, the same may be used Figure 3A Different wireless communication structure configurations are shown.

[0054] In some telecommunications (e.g., NR), a base station may send synchronization signals. For example, a base station may send a primary synchronization signal (PSS), a secondary synchronization signal (SSS), etc. on the downlink for each cell supported by the base station. The UE may use the PSS and SSS for cell search and acquisition. For example, the UE may use the PSS to determine symbol timing, and the UE may use the SSS to determine the physical cell identifier and frame timing associated with the base station. The base station may also send a physical broadcast channel (PBCH). The PBCH may carry some system information, such as system information that supports initial access of the UE.

[0055] In some aspects, such as the following combination Figure 3BAs described above, the base station may transmit the PSS, SSS and / or PBCH according to a synchronization communication hierarchy (eg, a synchronization signal (SS) hierarchy) including a plurality of synchronization communications (eg, SS blocks).

[0056] Figure 3B is a block diagram showing an example SS hierarchy, which is an example of a synchronous communication hierarchy. Figure 3B As shown, the SS hierarchy may include an SS burst set, which may include multiple SS bursts (identified as SS burst 0 to SS burst B-1, where B is the maximum number of repetitions of the SS burst that the base station may send). As further shown, each SS burst may include one or more SS blocks (identified as SS block 0 to SS block (b max_SS -1), where b max_SS -1 is the maximum number of SS blocks that a SS burst can carry). In some aspects, different SS blocks may be beamformed differently. Figure 3B As shown, the SS burst set may be sent by the wireless node periodically, for example, every X milliseconds. In some aspects, the SS burst set may have a fixed or dynamic length, such as Figure 3B The Y milliseconds are shown in Figure 2.

[0057] Figure 3B The SS burst set shown in is an example of a synchronous communication set, and other synchronous communication sets may be used in conjunction with the techniques described herein. Figure 3B The SS blocks shown in are examples of synchronous communications, and other synchronous communications may be used in conjunction with the techniques described herein.

[0058] In some aspects, an SS block includes resources that carry PSS, SSS, PBCH, and / or other synchronization signals (e.g., a third synchronization signal (TSS)) and / or synchronization channels. In some aspects, multiple SS blocks are included in an SS burst, and in each SS block of an SS burst, the PSS, SSS, and / or PBCH may be the same. In some aspects, a single SS block may be included in an SS burst. In some aspects, an SS block may be at least four symbol periods in length, with each symbol carrying one or more of a PSS (e.g., occupying one symbol), an SSS (e.g., occupying one symbol), and / or a PBCH (e.g., occupying two symbols).

[0059] In some aspects, such as Figure 3BAs shown, the symbols of the SS blocks are continuous. In some aspects, the symbols of the SS blocks are non-contiguous. Similarly, in some aspects, one or more SS blocks of an SS burst may be sent in continuous radio resources (e.g., continuous symbol periods) during one or more time slots. Additionally, or alternatively, one or more SS blocks of an SS burst may be sent in non-contiguous radio resources.

[0060] In some aspects, an SS burst may have a burst periodicity, whereby the base station transmits an SS block of the SS burst according to the burst periodicity. In other words, the SS block may repeat during each SS burst. In some aspects, an SS burst set may have a burst set periodicity, whereby the base station transmits an SS burst of the SS burst set according to a fixed burst set periodicity. In other words, the SS burst may repeat during each SS burst set.

[0061] The base station may send system information, such as system information blocks (SIBs), on a physical downlink shared channel (PDSCH) in certain time slots. The base station may send control information / data on a physical downlink control channel (PDCCH) within C symbol periods of a time slot, where B is configurable for each time slot. The base station may send traffic data and / or other data on the PDSCH in the remaining symbol periods of each time slot.

[0062] As mentioned above, providing Figure 3A and 3B As an example. Other examples may be related to Figure 3A and 3B Described differently.

[0063] Figure 4 An example slot format 410 with a normal cyclic prefix is ​​shown. The available time-frequency resources may be divided into resource blocks. Each resource block may cover a group of subcarriers (e.g., 12 subcarriers) in a slot and may include multiple resource elements. Each resource element may cover a subcarrier in a symbol period (e.g., in time) and may be used to send a modulation symbol, which may be real or complex valued.

[0064] In some telecommunication systems (e.g., NR), an interleaving structure may be used for each of the downlink and uplink of FDD. For example, Q interleavings indexed from 0 to Q–1 may be defined, where Q may be equal to 4, 6, 8, 10, or some other value. Each interleaving may include time slots separated by Q frames. Specifically, interleaving q may include time slots q, q+Q, q+2Q, etc., where q∈{0,…,Q–1}.

[0065] A UE may be located within the coverage of multiple BSs. One of these BSs may be selected to serve the UE. The serving BS may be selected based at least in part on various criteria, such as received signal strength, received signal quality, path loss, etc. The received signal quality may be quantified by a signal-to-noise-and-interference ratio (SNIR), a reference signal received quality (RSRQ), or some other metric. The UE may operate in a dominant interference scenario, in which the UE may observe high interference from one or more interfering BSs.

[0066] Although aspects of the examples described herein may be associated with NR or 5G technology, aspects of the present disclosure may be applicable to other wireless communication systems. New Radio (NR) may refer to a radio configured to operate according to a new air interface (e.g., an air interface different from that based on Orthogonal Frequency Division Multiple Access (OFDMA)) or a fixed transport layer (e.g., different from the Internet Protocol (IP)). In some aspects, NR may utilize OFDM with CP (referred to herein as cyclic prefix OFDM or CP-OFDM) and / or SC-FDM on the uplink, may utilize CP-OFDM on the downlink, and include support for half-duplex operation using time division duplex (TDD). In some aspects, for example, NR may utilize OFDM with CP (referred to herein as CP-OFDM) and / or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) on the uplink, may utilize CP-OFDM on the downlink, and include support for half-duplex operation using TDD. NR may include enhanced mobile broadband (eMBB) services targeting wide bandwidth (e.g., 80 megahertz (MHz) and above), millimeter wave (mmW) targeting high carrier frequencies (e.g., 60 gigahertz (GHz)), massive MTC (mMTC) targeting non-backward compatible MTC technologies, and / or mission-critical services targeting ultra-reliable low latency communication (URLLC) services.

[0067] In some aspects, a single component carrier bandwidth of 100 MHz may be supported. NR resource blocks may span 12 subcarriers with a subcarrier bandwidth of 60 or 120 kilohertz (kHz) and a duration of 0.1 milliseconds (ms). Each radio frame may include 40 time slots and may have a length of 10 ms. Thus, each time slot may have a length of 0.25 ms. Each time slot may indicate a link direction (e.g., DL or UL) for data transmission, and the link direction of each time slot may be switched dynamically. Each time slot may include DL / UL data and DL / UL control data.

[0068] Beamforming can be supported, and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. MIMO configuration in DL can support up to 8 transmit antennas, with multi-layer DL transmission of up to 8 streams and up to 2 streams per UE. Multi-layer transmission of up to 2 streams per UE can be supported. Multi-cell aggregation of up to 8 serving cells can be supported. Alternatively, NR can support a different air interface instead of an OFDM-based interface. The NR network can include entities such as a central unit or a distributed unit.

[0069] As mentioned above, providing Figure 4 As an example. Other examples may be related to Figure 4 Described differently.

[0070] Figure 5 An example logical architecture of a distributed RAN 500 according to aspects of the present disclosure is shown. A 5G access node 506 may include an access node controller (ANC) 502. The ANC may be a central unit (CU) of the distributed RAN 500. The backhaul interface to the next generation core network (NG-CN) 504 may terminate at the ANC. The backhaul interface to the adjacent next generation access node (NG-AN) may terminate at the ANC. The ANC may include one or more TRPs 508 (which may also be referred to as BS, NR BS, Node B, 5GNB, AP, gNB, or some other terminology). As described above, "TRP" may be used interchangeably with "cell".

[0071] The TRP 508 may be a distributed unit (DU). The TRP may be connected to one ANC (ANC 502) or more than one ANC (not shown). For example, for RAN sharing, Radio as a Service (RaaS), and service-specific AND deployments, the TRP may be connected to more than one ANC. The TRP may include one or more antenna ports. The TRP may be configured to provide services to the UE individually (e.g., dynamically selected) or jointly (e.g., joint transmission).

[0072] The local architecture of RAN 500 can be used to illustrate fronthaul communication. The architecture can be defined to support fronthaul solutions across different deployment types. For example, the architecture can be based at least in part on the sending network capabilities (e.g., bandwidth, latency, and / or jitter).

[0073] The architecture may share features and / or components with LTE. According to various aspects, the next generation AN (NG-AN) 510 may support dual connectivity with NR. For LTE and NR, the NG-AN may share a common fronthaul.

[0074] The architecture may enable cooperation between TRPs 508. For example, cooperation may be provisioned within a TRP and / or across TRPs via ANC 502. According to various aspects, an inter-TRP interface may not be required / existent.

[0075] According to various aspects, dynamic configuration of split logic functions may exist within the architecture of the RAN 500. Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) or Medium Access Control (MAC) protocols may be adaptively placed at the ANC or TRP.

[0076] According to various aspects, a BS may include a central unit (CU) (eg, ANC 502) and / or one or more distributed units (eg, one or more TRPs 508).

[0077] As mentioned above, providing Figure 5 As an example. Other examples may be related to Figure 5 Described differently.

[0078] Figure 6 An example physical architecture of a distributed RAN 600 according to aspects of the present disclosure is shown. A centralized core network unit (C-CU) 602 may host core network functions. The C-CU may be centrally deployed. To handle peak capacity, C-CU functions may be offloaded (e.g., to Advanced Wireless Services (AWS)).

[0079] A centralized RAN unit (C-RU) 604 may host one or more ANC functions. Optionally, the C-RU may host core network functions locally. The C-RU may have a distributed deployment. The C-RU may be closer to the network edge.

[0080] A distributed unit (DU) 606 may host one or more TRPs. A DU may be located at the edge of a network with radio frequency (RF) capabilities.

[0081] As mentioned above, providing Figure 6 As an example. Other examples may differ from Figure 6 as described.

[0082] In some communication systems, side link communication may be supported to enable a first UE (e.g., a source UE) to communicate with a second UE (e.g., a target UE) without relaying the communication through one or more BSs. In this case, the target UE may receive information (e.g., control information or data) from the source UE via the side link, and may receive information from the serving BS via another link, such as Uu (e.g., a link on a Uu interface) or an access link. For the UE, the communication on the other link is controlled by the corresponding serving cell of the UE. The BS may send a scheduling grant to the UE to enable the UE to send and / or receive information. For example, the BS may send a side link resource grant to the source UE to allocate resources to the source UE to send to the target UE. However, the target UE does not receive a grant for the side link resources, and therefore may monitor the side link at all times when the resources may be used on the side link in an attempt to receive information from the source UE. This may cause the target UE to monitor the side link and another link at the same time, which may result in excessive utilization of power resources.

[0083] Some aspects described herein enable the BS to indicate a sidelink authorization to the target UE so that the target UE can selectively monitor the sidelink. In this case, the target UE can give up monitoring the sidelink at one or more times, during which resources are available for the sidelink allocation, but for which no resources are allocated to the target UE to receive on the sidelink. In this way, the BS and the target UE can reduce the utilization of power resources.

[0084] Figure 7 An example 700 of sidelink communication resource signaling according to various aspects of the present disclosure is shown. Figure 7 As shown, example 700 includes one or more BSs 110, a source UE 120 to send sidelink communications, and a target UE 120 to receive target communications. For example, a single BS 110 may be a serving cell for the source UE 120 and the target UE 120. Alternatively, a first BS 110 may be a serving cell for the source UE 120 and may communicate with a second BS 110 that is a serving cell for the target UE 120 via a backhaul link.

[0085] like Figure 7 As further shown in FIG. 1 and by reference numeral 710, BS 110 may receive a request for a sidelink grant. For example, when source UE 120 has data or control information queued for transmission to target UE 120, source UE 120 may request a grant for sidelink resources to send the data or control information as a sidelink communication to target UE 120. Additionally or alternatively, BS 110 may send or configure periodic or semi-persistent sidelink grants to source UE 120 to enable source UE 120 to transmit to target UE 120 on the sidelink.

[0086] In some aspects, BS 110 may determine a UE identifier of target UE 120 based at least in part on the request for sidelink grant. For example, source UE 120 may indicate the UE identifier of target UE 120 to BS 110 to enable BS 110 to provide an indication of the sidelink grant to target UE 120. Additionally or alternatively, source UE 120 may indicate the UE identifier of target UE 120 to BS 110 to enable BS 110 to communicate with another BS 110 that is a serving cell for target UE 120 (e.g., via a backhaul link), thereby causing the other BS 110 to provide the indication of the grant to target UE 120.

[0087] In some aspects, BS 110 may determine resources from a set of available resources to allocate to source UE 120. For example, resources may be divided (e.g., using time division multiplexing (TDM)) into a first type that may be granted by BS 110 and a second type that may not be granted by BS 110. In this case, BS 110 may select resources of the first type and indicate the resources of the first type to source UE 120 to enable source UE 120 to transmit to target UE 120.

[0088] like Figure 7 As further shown in FIG. 1 and by reference numeral 720, BS 110 may provide an indication of a sidelink grant. For example, base station 110 may send an indication of a sidelink grant to source UE 120, target UE 120, etc. In this manner, when one or more resources are allocated to target UE 120, BS 110 enables target UE 120 to monitor the sidelink to receive transmissions via the sidelink, thereby reducing power resource utilization relative to if target UE 120 always monitors the sidelink. Additionally or alternatively, BS 110 may send or configure a periodic or semi-persistent sidelink grant to target UE 120 to enable target UE 120 to periodically or semi-persistently monitor the sidelink, respectively.

[0089] In some aspects, BS 110 may provide an indication of a sidelink grant via a group common control signal. For example, BS 110 may broadcast a single indication of a sidelink grant to source UE 120, target UE 120, one or more other UEs 120, etc. In this case, source UE 120 may process a single indication of a sidelink grant to determine that the sidelink grant includes resource allocation for sidelink transmission. Additionally or alternatively, target UE 120 may process a single indication of a sidelink grant to determine that the sidelink grant includes resource allocation for sidelink reception. In some aspects, BS 110 may send a sidelink grant to a group of UEs 120 associated with a common radio network temporary identifier (RNTI) of a physical downlink control channel (PDCCH). For example, BS 110 may send a PDCCH transmission that identifies a sidelink grant for a group of UEs 120 associated with a common RNTI. Additionally or alternatively, the indication of a sidelink grant may include one or more identifiers of a source UE 120, a target UE 120, etc.

[0090] In some aspects, BS 110 may provide an indication of a sidelink grant via multiple messages. For example, BS 110 may send a first indication of a sidelink grant to source UE 120 and a second indication of a sidelink grant to target UE 120. Additionally or alternatively, a first BS 110 may send a first indication of a sidelink grant to source UE 120 and a second BS 110 may send a second indication of a sidelink grant to target UE 120. In this case, one or more BSs 110 may send one or more indications of a sidelink grant via a control signal.

[0091] like Figure 7 As further shown in FIG. 1 and by reference numeral 730, the target UE 120 may activate monitoring of the side link. For example, the target UE 120 may switch from monitoring another link with the BS 110 to monitoring the side link with the source UE 120. Additionally or alternatively, the UE 120 may start monitoring of the side link and may continue monitoring the other link.

[0092] In some aspects, the target UE 120 can monitor the side link based at least in part on the resource type scheduled on the side link. For example, during a time period of a resource that can be authorized (e.g., a resource of the first type that can be authorized by BS 110), UE 120 can monitor another link (e.g., an access link or Uu), and abandon monitoring the side link until the resource in the time period is identified as a side link authorization. In this case, during a time period of another non-authorized resource (e.g., a second type of resource that is not controlled by BS 110), the target UE 120 can monitor both another link and the side link. In this case, the target UE 120 reduces the utilization of power resources relative to always (e.g., during all time periods associated with the authorized resource) monitoring another link.

[0093] like Figure 7 As further shown in , and by reference numeral 740, source UE 120 can send and target UE 120 can receive sidelink communication via sidelink. For example, source UE 120 can send control information and / or data (e.g., physical sidelink control channel (PSSCH) or physical sidelink shared channel (PSSCH)) to target UE 120, and target UE 120 can receive the control information and / or data. In this way, relative to target UE 120 always monitoring the communication from source UE 120, source UE 120 communicates with target UE 120 under the condition of reduced utilization of network resources. In some aspects, target UE 120 can switch from monitoring sidelink after receiving sidelink communication. For example, after receiving sidelink communication, target UE 120 can stop monitoring sidelink (e.g., until receiving another indication of sidelink authorization), and can monitor another link, thereby reducing the utilization of power resources relative to both monitoring sidelink and another link.

[0094] As mentioned above, providing Figure 7 As an example. Other examples may differ from the Figure 7 as described.

[0095] Figure 8 An example process 800 is shown, for example, as performed by a BS, in accordance with various aspects of the present disclosure. Example process 800 is an example of operations performed by a BS (eg, BS 110, etc.) associated with sidelink communication resource signaling.

[0096] like Figure 8As shown, in some aspects, process 800 may include receiving an indication of a sidelink communication queued for communication between a source UE and a target UE (block 810). For example, as described above, the BS (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, etc.) may receive an indication of a sidelink communication queued for communication between a source UE and a target UE.

[0097] like Figure 8 As further shown in FIG. 8 , in some aspects, process 800 may include sending a side link resource grant via another link to identify one or more resources on the side link for side link communication between the source UE and the target UE (block 820). For example, as described above, the BS (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, etc.) may send a side link resource grant via another link to identify one or more resources on the side link for side link communication between the source UE and the target UE.

[0098] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0099] In a first aspect, the sidelink resource grant is transmitted via a group common control signal.

[0100] In a second aspect, alone or in combination with the first aspect, a sidelink resource grant is broadcast to at least one of a source UE or a target UE to identify one or more resources.

[0101] In a third aspect, alone or in combination with one or more of the first and second aspects, the sidelink resource grant is transmitted via a physical downlink control channel message associated with a group radio network temporary identifier.

[0102] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the sidelink resource grant is transmitted via a first control signal sent to the source UE and a second control signal sent to the target UE.

[0103] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a sidelink resource grant is broadcast to a plurality of UEs to convey information identifying one or more resources to a target UE.

[0104] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 800 includes receiving an indication of a UE identifier associated with a target UE from a source UE, and sending a side link resource authorization to the target UE via a message based at least in part on the indication of the UE identifier of the target UE.

[0105] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the sidelink resource grant to the target UE is through downlink control information with a cell radio network temporary identifier of the target UE.

[0106] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, one or more resources are divided into a first type that is authorizable for receiving operations and a second type that is not authorizable for receiving operations.

[0107] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the other link is a Uu or access link.

[0108] although Figure 8 Example blocks of process 800 are shown, but in some aspects, process 800 may include Figure 8 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in process 800. Additionally or alternatively, two or more blocks of process 800 may be performed in parallel.

[0109] Fig. 9 An example process 900 is shown, for example, performed by a UE, in accordance with various aspects of the present disclosure. Example process 900 is an example of a target UE (eg, UE 120, etc.) performing operations associated with sidelink communication resource signaling.

[0110] like Fig. 9 As shown, in some aspects, process 900 may include receiving a sidelink resource grant from a serving base station (BS), the sidelink resource grant identifying one or more resources for receiving a sidelink from a source UE (block 910). For example, as described above, a target UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may receive a sidelink resource grant from a serving BS, the sidelink resource grant identifying one or more resources for receiving a sidelink from a source UE.

[0111] like Fig. 9 As further shown in FIG. 9 , in some aspects, process 900 may include activating monitoring of the sidelink based at least in part on receiving the sidelink resource grant (block 920). For example, as described above, the target UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may activate monitoring of the sidelink based at least in part on receiving the sidelink resource grant.

[0112] like Fig. 9As further shown in FIG. 9 , in some aspects, process 900 may include monitoring one or more resources on the sidelink based at least in part on activating monitoring of the sidelink to receive sidelink communications from the source UE (block 930). For example, as described above, the target UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may monitor one or more resources on the sidelink based at least in part on activating monitoring of the sidelink to receive sidelink communications from the source UE.

[0113] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0114] In a first aspect, process 900 includes monitoring one or more other resources on another link that are not identified in a sidelink resource grant.

[0115] In a second aspect, either alone or in combination with the first aspect, one or more resources are first type resources that are authorizable for receive operations, and process 900 includes monitoring the side link for second type resources that are not authorizable for receive operations, wherein monitoring the side link for the second type of resources is not based at least in part on receiving side link resource authorization.

[0116] In a third aspect, alone or in combination with one or more of the first and second aspects, the sidelink resource grant is transmitted via a group common control signal.

[0117] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the sidelink resource grant is a broadcast signal.

[0118] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the sidelink resource grant is transmitted via a physical downlink control channel message associated with a group radio network temporary identifier.

[0119] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the sidelink resource grant is transmitted via a control signal sent to the target UE.

[0120] although Fig. 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include Fig. 9 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in process 900. Additionally or alternatively, two or more blocks of process 900 may be performed in parallel.

[0121] Fig.101 is a block diagram of an example apparatus 1000 for wireless communication. Apparatus 1000 may be a BS, or a BS may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002 and a transmitting component 1004, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using receiving component 1002 and transmitting component 1004. As further shown, apparatus 1006 may include a communication control component 1008 and one or more of the other examples.

[0122] In some aspects, the apparatus 1000 may be configured to perform Figure 7 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more of the processes described herein, such as Figure 8 In some aspects, Fig.10 The device 1000 and / or one or more components shown may include the above-mentioned Figure 2 Additionally or alternatively, Fig.10 One or more of the components shown above may be combined Figure 2 Additionally or alternatively, one or more components in the set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0123] The receiving component 1002 may receive communications from the apparatus 1006, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1002 may provide the received communications to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 may perform signal processing (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the apparatus 1006. In some aspects, the receiving component 1002 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described BS.

[0124] The transmitting component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the apparatus 1006. In some aspects, one or more other components of the apparatus 1006 may generate communications and may provide the generated communications to the transmitting component 1004 for transmission to the apparatus 1006. In some aspects, the transmitting component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communications and may transmit the processed signals to the apparatus 1006. In some aspects, the transmitting component 1004 may include the above in combination with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described BS. In some aspects, the transmit component 1004 can be collocated with the receive component 1002 in a transceiver.

[0125] The receiving component 1002 can receive an indication of a sidelink communication queued for communication between a source UE (e.g., the first device 1006) and a target UE (e.g., the second device 1006), receive an indication of a UE identifier associated with the target UE from the source UE, etc. The communication control component 1008 can control the receiving component 1002 and / or the sending component 1004 to enable receiving an indication of a sidelink communication and sending a sidelink resource grant, respectively. The sending component 1004 can send a sidelink resource grant via another link to identify one or more resources on the sidelink for sidelink communication between the source UE and the target UE, send the sidelink resource grant to the target UE via a message based at least in part on an indication of a UE identifier of the target UE, and the like.

[0126] supply Fig.10 The number and arrangement of components shown in FIG. are provided as examples. Fig.10 There may be additional components, fewer components, different components, or differently arranged components than those shown in FIG. Fig.10 Two or more components shown may be implemented in a single component, or Fig.10 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.10 The illustrated set (one or more) of components may perform the operations described as being performed by Fig.10 Another group of components shown performs one or more functions.

[0127] Fig.111 is a block diagram of an example apparatus 1100 for wireless communication. Apparatus 1100 may be a UE, or a UE may include apparatus 1100. In some aspects, apparatus 1100 includes a receiving component 1102 and a sending component 1104, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1100 may communicate with another apparatus 1106 (such as a UE, a base station, or another wireless communication device) using receiving component 1102 and sending component 1104. As further shown, apparatus 1106 may include one or more of activation component 1108 or monitoring component 1110 and other examples.

[0128] In some aspects, the apparatus 1100 may be configured to perform Figure 7 Additionally or alternatively, the apparatus 1100 may be configured to perform one or more processes described herein, such as Fig. 9 In some aspects, Fig.11 The device 1100 and / or one or more components shown may include the above combined Figure 2 Additionally or alternatively, Fig.11 One or more of the components shown above may be combined Figure 2 Additionally or alternatively, one or more components in the set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0129] The receiving component 1102 may receive communications from the apparatus 1106, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1102 may provide the received communications to one or more other components of the apparatus 1100. In some aspects, the receiving component 1102 may perform signal processing (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the apparatus 1106. In some aspects, the receiving component 1102 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a UE are described.

[0130] The transmitting component 1104 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1106. In some aspects, one or more other components of the device 1106 may generate communications and may provide the generated communications to the transmitting component 1104 for transmission to the device 1106. In some aspects, the transmitting component 1104 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communications and may transmit the processed signals to the device 1106. In some aspects, the transmitting component 1104 may include the above in combination with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1104 can be collocated with the receive component 1102 in a transceiver.

[0131] The receiving component 1102 may receive a sidelink resource grant from a serving base station (BS), the sidelink resource grant identifying one or more resources for receiving a sidelink from a source UE. The activating component 1108 may activate monitoring of the sidelink based at least in part on receiving the sidelink resource grant. The transmitting component 1104 may monitor one or more resources on the sidelink based at least in part on activating monitoring of the sidelink to receive sidelink communications from the source UE, and / or monitor the sidelink for resources of a second type that are not authorizable for receiving operations.

[0132] supply Fig.11 The number and arrangement of components shown in FIG. are provided as examples. Fig.11 There may be additional components, fewer components, different components, or differently arranged components than those shown in FIG. Fig.11 Two or more components shown may be implemented in a single component, or Fig.11 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.11 The illustrated set (one or more) of components may perform the operations described as being performed by Fig.11 Another group of components shown performs one or more functions.

[0133] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of these aspects.

[0134] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0135] As used herein, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0136] It will be apparent that the systems and / or methods described herein may be implemented in various forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement the systems and / or methods is not limited in these respects. Thus, the operation and behavior of the systems and / or methods described herein are not referenced to specific software code—it should be understood that software and hardware may be designed to implement the systems and / or methods based at least in part on the description herein.

[0137] Although specific combinations of features are stated in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways that are not stated in the claims and / or disclosed in the specification. Although each dependent claim listed below can directly depend on only one claim, the disclosure of each aspect includes each dependent claim combined with each other claim in the claim set. A phrase referring to "at least one" in a list of items refers to any combination of those items, including single members. For example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbc, bbc, cc, and ccc or any other ordering of a, b, and c).

[0138] Unless explicitly described, the elements, actions or instructions used herein should not be interpreted as critical or essential. In addition, as used herein, the articles "one" and "an" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.), and can be used interchangeably with "one or more". When only one item is intended, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "contain" and / or similar terms are intended to be open terms. In addition, unless otherwise explicitly stated, the phrase "based on" is intended to mean "based at least in part on".

Claims

1. A wireless communication method performed by a network entity, comprising: receiving an indication of a sidelink communication queued for communication between a source user equipment UE and a target UE; as well as The network entity directly sends a sidelink resource grant to the source UE and the target UE based on the source UE and the target UE being associated with a common radio network temporary identifier RNTI, wherein the sidelink resource grant identifies one or more resources on the sidelink for sidelink communication between the source UE and the target UE.

2. The method according to claim 1, wherein: The sidelink resource grant is sent via the Uu or access link.

3. The method according to claim 1, wherein: The sidelink resource grant is transmitted via a group common control signal.

4. The method according to claim 1, wherein: The sidelink resource grant is transmitted via a physical downlink control channel message associated with the common RNTI.

5. The method according to claim 1, wherein: The sidelink resource grant is transmitted via a first control signal sent to the source UE and a second control signal sent to the target UE.

6. The method according to claim 1, wherein: The one or more resources are divided into a first type that is authorizable for receiving operations and a second type that is not authorizable for receiving operations.

7. The method according to claim 1, wherein: The sidelink resource grant is a periodic or semi-persistent sidelink grant.

8. The method according to claim 1, wherein: The indication of the sidelink resource grant includes identifiers of the source UE and the target UE.

9. A wireless communication method performed by a target user equipment UE, comprising: receiving a sidelink resource grant from a network entity, the sidelink resource grant being sent directly to the source UE and the target UE based on the source UE and the target UE being associated with a common radio network temporary identifier RNTI, wherein the sidelink resource grant identifies one or more resources for receiving a sidelink from the source UE; activating monitoring of the sidelink based at least in part on receiving the sidelink resource grant; as well as Based at least in part on activating the monitoring of the sidelink, one or more resources on the sidelink are monitored to receive sidelink communications from the source UE.

10. The method according to claim 9, further comprising: One or more other resources not identified in the sidelink resource grant are monitored on another link.

11. The method according to claim 9, wherein: The one or more resources are resources of a first type that are authorizable for receiving an operation; as well as The method further comprises: monitoring the side link for resources of a second type that are not authorizable for receive operations, and Wherein monitoring the sidelink for the second type of resources is not based on receiving the sidelink resource grant.

12. The method according to claim 9, wherein: The sidelink resource grant is transmitted via a group common control signal.

13. The method according to claim 9, wherein: The sidelink resource grant is a broadcast signal.

14. The method according to claim 9, wherein: The sidelink resource grant is transmitted via a physical downlink control channel message associated with the common RNTI.

15. The method according to claim 7, wherein: The sidelink resource grant is transmitted via a control signal sent to the target UE.

16. The method according to claim 9, wherein: The sidelink resource grant is a periodic or semi-persistent sidelink grant.

17. The method according to claim 9, wherein: The indication of the sidelink resource grant includes identifiers of the source UE and the target UE.

18. A network entity for wireless communication, comprising: Memory; as well as One or more processors, coupled to the memory, configured to: receiving an indication of a sidelink communication queued for communication between a source user equipment UE and a target UE; and A sidelink resource grant is sent directly to the source UE and the target UE based on the source UE and the target UE being associated with a common radio network temporary identifier RNTI, wherein the sidelink resource grant identifies one or more resources on a sidelink for sidelink communication between the source UE and the target UE.

19. The network entity according to claim 18, wherein: The sidelink resource grant is sent via the Uu or access link.

20. The network entity according to claim 18, wherein: The sidelink resource grant is transmitted via a group common control signal.

21. The network entity according to claim 18, wherein: The sidelink resource grant is transmitted via a physical downlink control channel message associated with a common RNTI.

22. The network entity according to claim 18, wherein: The sidelink resource grant is transmitted via a first control signal sent to the source UE and a second control signal sent to the target UE.

23. The network entity according to claim 18, wherein: The sidelink resource grant is a periodic or semi-persistent sidelink grant.

24. The network entity according to claim 18, wherein: The indication of the sidelink resource grant includes identifiers of the source UE and the target UE.

25. A target user equipment UE for wireless communication, comprising: Memory; as well as One or more processors, coupled to the memory, configured to: receiving a sidelink resource grant from a network entity, the sidelink resource grant identifier being directly sent to the source UE and the target UE based on the source UE and the target UE being associated with a common radio network temporary identifier RNTI, wherein the sidelink resource grant identifier is used to receive one or more resources of the sidelink from the source UE; activating monitoring of the sidelink based at least in part on receiving the sidelink resource grant; as well as Based at least in part on activating the monitoring of the sidelink, one or more resources on the sidelink are monitored to receive sidelink communications from the source UE.

26. The target UE according to claim 25, wherein: The one or more processors are further configured to: One or more other resources not identified in the sidelink resource grant are monitored on another link.

27. The target UE according to claim 25, wherein: The one or more resources are resources of a first type that are authorizable for receiving an operation; wherein the one or more processors are configured to monitor the side link for a second type of resource that is not authorizable for receive operations, and Wherein monitoring the sidelink for the second type of resources is not based at least in part on receiving the sidelink resource grant.

28. The target UE according to claim 25, wherein: The sidelink resource grant is transmitted via a group common control signal.

29. The target UE according to claim 25, wherein: The sidelink resource grant is a broadcast signal.

30. The target UE according to claim 25, wherein: The sidelink resource grant is a periodic or semi-persistent sidelink grant.

31. A computer readable medium having stored thereon instructions which, when executed by a computer, cause the computer to perform the method according to any one of claims 1 to 8.

32. A computer readable medium having stored thereon instructions which, when executed by a computer, cause the computer to perform the method according to any one of claims 9 to 17.

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