Replication of packets associated with a direction range
By replicating V2X packets at the UE's protocol stack layer and associating them with directional range, and selecting appropriate transmission parameters, the problem of unreasonable transmission parameters in multi-TRP scenarios is solved, improving the transmission reliability and coverage of V2X packets, and enhancing the quality and security of vehicle communication.
Patent Information
- Application Number
- CN202080103892.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-31
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2040-08-31
AI Technical Summary
Existing wireless communication systems fail to effectively utilize the directional differences among multiple transmit and receive points (TRPs) in vehicle-to-everything (V2X) packet transmission, resulting in unreasonable selection of transmission parameters and affecting transmission reliability and coverage.
V2X packets are replicated at the User Equipment (UE) protocol stack layer, and each replicated V2X packet is associated with a specific directional range. Appropriate transmission parameters are selected to optimize transmission, such as using different precoders, to ensure that the transmission parameters match the directionality of the TRP.
It improves the transmission reliability and coverage of V2X packets, and enhances the communication quality and security between vehicles, especially in multi-TRP scenarios.
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Figure CN116264857B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Aspects of the disclosure relate generally to wireless communication, and to techniques and apparatuses for duplication of packets associated with directional ranges. BACKGROUND
[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems can employ multiple-access technologies capable of supporting 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 (3 GPP).
[0003] A wireless network can include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A user equipment (UE) can communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication from the BS to the UE, and the uplink (or reverse link) refers to the communication from the UE to the BS. As will be described in more detail herein, a BS can be referred to as a Node B, a gNB, an access point (AP), a radio head, a transmit receive point (TRP), a new radio (NR) BS, a 5G Node B, and / or the like.
[0004] The above multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate on a municipal, national, regional, and even global level. New Radio (NR), which can also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP- OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM)) for the uplink (UL), as well as promoting SUMMARY
[0005] In some aspects, a method of wireless communication performed by a UE includes receiving a vehicle-to-everything (V2X) packet; and duplicating, at a protocol stack layer of the UE, the V2X packet to form a plurality of duplicated V2X packets, wherein each duplicated V2X packet is associated with a directional range.
[0006] In some aspects, a UE for wireless communication can include a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: receive a V2X packet; and duplicate, at a protocol stack layer of the UE, the V2X packet to form a plurality of duplicated V2X packets, wherein each duplicated V2X packet is associated with a directional range.
[0007] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive a V2X packet; and duplicate, at a protocol stack layer of the UE, the V2X packet to form a plurality of duplicated V2X packets, wherein each duplicated V2X packet is associated with a directional range.
[0008] In some aspects, an apparatus for wireless communication includes means for receiving a V2X packet; and means for duplicating, at a protocol stack layer of the apparatus, the V2X packet to form a plurality of duplicated V2X packets, wherein each duplicated V2X packet is associated with a directional range.
[0009] 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 substantially described herein with reference to and as illustrated by the accompanying drawings and specification.
[0010] The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily utilized as bases for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions are not to be considered as departing from the scope of the appended claims. The concepts disclosed herein, both as to their organization and method of operation, can better be understood by reference to the drawings, which BRIEF DESCRIPTION OF DRAWINGS
[0011] A more particular description of the aspects will be rendered by reference to specific aspects, some of which are illustrated in the accompanying drawings, which are shown by way of example and not limitation. It is appreciated that for simplicity and clarity of illustration, elements shown in the drawings have not necessarily been drawn to scale. For example, the dimensions of all the elements are markedly exaggerated or reduced, as the case can be, for clarity and instructional purposes. Identical reference numerals in different drawings denote the same or similar elements.
[0012] Figure 1 is a diagram illustrating an example of a wireless network, in accordance with various aspects of the present disclosure.
[0013] Figure 2 is a diagram illustrating an example of a base station in communication with a UE in a wireless network, in accordance with various aspects of the present disclosure.
[0014] Figure 3 is a diagram illustrating an example of data transmission with multiple transmission and reception points (mTRPs), in accordance with aspects of the present disclosure.
[0015] Figure 4 is a diagram illustrating an example of data transmission and data retransmission with mTRPs, in accordance with various aspects of the present disclosure.
[0016] Figure 5 is a diagram illustrating an example of aperiodic resource reservation, in accordance with various aspects of the present disclosure.
[0017] Figure 6 is a diagram illustrating an example of a user plane protocol stack, in accordance with various aspects of the present disclosure.
[0018] Figure 7 is a diagram illustrating an example of quality of service processing for packets, in accordance with various aspects of the present disclosure.
[0019] Figures 8-11 is a diagram illustrating an example of replication of packets associated with a directional range, in accordance with various aspects of the present disclosure.
[0020] Figure 12 is a diagram illustrating an example process of replication of packets associated with a directional range, in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION
[0021] Various aspects of the disclosure are more fully described below with reference to the figures. The disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function set forth throughout this disclosure. Rather, these aspects are provided as illustrative examples so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover devices, methods, and articles of manufacture made by the processes described herein or contacting combinations of any of the elements set forth herein. One skilled in the art should appreciate that any aspect of the disclosure disclosed herein can be embodied by one or more elements of a claim.
[0022] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods 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 can be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.
[0023] It should be noted that while aspects can be described herein using terminology commonly associated with a 5G or NR radio access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and / or a RAT subsequent to 5G (e.g., 6G).
[0024] Figure 1 is a diagram illustrating an example of a wireless network 100, in accordance with aspects of the present disclosure. The wireless network 100 can be or include elements of a 5G (NR) network, an LTE network, and / or the like. The wireless network 100 can include a number of base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 1 lOd) and other network entities. A base station (BS) is an entity that communicates with user equipment (UEs) and can also be referred to as an NR BS, a Node B, a gNB, a 5G node B (NB), an access point, a transmit receive point (TRP), and / or the like. Each BS can provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.
[0025] BSs can provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell can cover a relatively large geographic area (e.g., several kilometers in radius) and can allow unrestricted access by UEs with service subscriptions appropriate for the Figure 1 macro cell. A pico cell can cover a relatively small geographic area and can allow unrestricted access by UEs with service subscriptions appropriate for the pico cell. A femto cell can cover a relatively small geographic area (e.g., a home) and can allow restricted access by UEs with service subscriptions appropriate for the femto cell. A BS for a macro cell can be referred to as a macro BS. A BS for a pico cell can be referred to as a pico BS. A BS for a femto cell can be referred to as a femto BS or a home BS. In the example shown in FIG. 1, a BS can be referred to as a macro BS, a pico BS, and / or a femto BS. In
[0026] In some aspects, a cell can not necessarily be stationary, and the geographic area of the cell can move according to the location of a mobile BS. In some aspects, a BS can be interconnected to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and / or the like using any appropriate transport network.
[0027] Wireless network 100 can also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in FIG. 1, relay BS 1 lOd can communicate with macro BS 110a and UE 120d in order to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, a relay base station, a relay, or the like.
[0028] Wireless network 100 can be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, or the like. These different types of BSs can have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100. For example, macro BSs can have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 Watts).
[0029] A network controller 130 can couple to a set of BSs and can provide coordination and control for these BSs. Network controller 130 can be in communication with the BSs via a backhaul. The BSs can also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.
[0030] UEs 120 (e.g., 120a, 120b, 120c) can be dispersed throughout wireless network 100, and each UE can be stationary or mobile. A UE can also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. A 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, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (e.g., a smart ring, a smart bracelet), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicular component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.
[0031] Some UEs can be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, e.g., robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that can communicate with a base station, another device (e.g., remote device), or some other entity. A wireless node can provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link. Some UEs can be considered Intemet-of-Things (IoT) devices, and / or can be implemented as NB-IoT (narrowband internet of things) devices. Some UEs can be considered user equipment (UE). A UE 120 can be included inside a housing that houses components of the UE 120, such as processor components, memory components, and / or the like. In some aspects, the processor components and the memory components can be coupled together. For example, the processor components (e.g., one or more processors) and the memory components (e.g., a memory) can be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, and / or the like.
[0032] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a particular RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, an air interface, and / or the like. Frequencies can also be referred to as carriers, frequency channels, and / or the like. Each frequency can support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.
[0033] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with one another). For example, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110. FIG. 2 shows a diagram of a wireless communications device that can be employed with one or more embodiments of the disclosure.
[0034] Devices of wireless network 100 can use electromagnetic spectrum for communication, which can be subdivided, based on frequency or wavelength, into various classes, bands, channels, and / or the like. For example, devices of wireless network 100 can communicate using an operating band having a first frequency range (FR1), which can span from 410 MHz to 7.125 GHz, and / or can communicate using an operating band having a second frequency range (FR2), which can span from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a “sub-6 GHz” band. Similarly, although FR2 is not identical to an extremely high frequency (EHF) band, which is identified by the International Telecommunications Union (ITU) as spanning from 30 GHz to 300 GHz, FR2 is often referred to
[0035] As indicated above, Figure 1 are provided as examples. Other examples can differ from what is described with respect to at least one of the Figure 1 described examples.
[0036] Figure 2 is a schematic diagram illustrating an example 200 of a base station 110 in communication with a UE 120 in a wireless network 100, in accordance with various aspects of the present disclosure. The base station 110 can be equipped with T antennas 234a through 234t, and the UE 120 can be equipped with R antennas 252a through 252r, where generally T > 1 and R > 1.
[0037] At base station 110, a transmit processor 220 can receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmit processor 220 can 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.) to provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS), demodulation reference signals (DMRS), etc.) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and / or the reference symbols, if applicable, and can provide T output symbol streams to T modulators (MOD) 232a through 232t. Each modulator 232 can process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t can be transmitted via T antennas 234a through 234t, respectively.
[0038] At the UE 120, the antennas 252a through 252r can receive the downlink signals from the base station 110 and / or other base stations and can provide received signals to the demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term “controller / processor” can refer to one or more controllers, one or more processors, or combinations thereof. A channel processor can 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 UE 120 can be included in a housing 284.
[0039] The network controller 130 can include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 can include, for example, one or more devices in a core network. The network controller 130 can communicate with the base station 110 via the communication unit 294.
[0040] On the uplink, at the UE 120, a transmit processor 264 can receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.) from the controller / processor 280. Transmit processor 264 can also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 can be precoded 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. In some aspects, the UE 120 includes a transceiver. The transceiver can include any combination of antennas 252, modulators and / or demodulators 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver can be used by a processor (e.g., controller / processor 280) and memory 282 to perform any of the methods described herein, for example, as described with reference to Figures 8-12 The network controller 130 can include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 can include, for example, one or more devices in a core network. The network controller 130 can communicate with the base station 110 via the communication unit 294.
[0041] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 can provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 for scheduling downlink and / or uplink communications by UE 120. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to execute aspects of any of the methods described herein, for example, as referenced Figures 8-12 Described.
[0042] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2 Any other component may perform one or more techniques associated with the replication of packets related to the directional range, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can perform or direct, for example Figure 12 The operation of process 1200 and / or other processes as described herein. Memory 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code, program code, etc.) for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, translation, interpretation, etc.), may cause one or more processors, UE 120 and / or base station 110 to perform or direct, for example... Figure 12 The operation of process 1200 and / or other processes as described herein. In some aspects, execution instructions may include run instructions, translation instructions, compilation instructions, interpretation instructions, etc.
[0043] In some aspects, a UE (e.g., UE 120) can include means for receiving a V2X packet; means for duplicating, at a protocol stack layer of the UE, the V2X packet to form a plurality of duplicated V2X packets, wherein each duplicated V2X packet is associated with a direction range; and / or the like. In some aspects, such means can include one or more components of UE 120 described in connection with FIG. 2, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and / or the like. Figure 2 One or more components of UE 120 described, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and / or the like.
[0044] Although Figure 2 the blocks in FIG. 2 are shown as distinct components, the functionality described above with respect to these blocks can be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by controller / processor 280 or under its control.
[0045] As indicated above, Figure 2 is provided by way of example. Other examples can differ from what is described with respect to at least one of the described examples. Figure 2
[0046] Sidelink communications (e.g., V2X communications) can be performed between UEs (e.g., vehicles). Vehicles can be equipped with mTRPs, which can improve reliability, coverage, and capacity performance through flexible deployment scenarios. Moreover, mTRPs can improve reliability of safety and other high-robustness and throughput-desiring applications.
[0047] Figure 3 is a diagram illustrating an example 300 of data transmission with mTRPs, in accordance with various aspects of the present disclosure.
[0048] As Figure 3 shown in FIG. 3, in an mTRP scenario, a UE 102 associated with a vehicle can transmit data to multiple TRPs. For example, UE 102 can transmit data that is received at a first TRP (TRP1) and a second TRP (TRP2). The first TRP can be in a first direction relative to UE 102, and the second TRP can be in a second direction relative to UE 102. In this particular example, the first TRP can be in a front-side direction relative to UE 102, and the second TRP can be in a back-side direction relative to UE 102.
[0049] In some cases, side coverage for the UE 102 can not be as important in certain scenarios. Depending on packet content, packet type, deployment scenario, etc., transmissions from the UE 102 can be biased in the front side direction and / or the back side direction. In this particular example, data transmissions from the UE 102 can be more biased towards the front side than the back side.
[0050] As indicated above, Figure 3 are provided by way of example. Other examples can differ from those described Figure 3 without departing from the spirit of the disclosure.
[0051] Figure 4 is a diagram illustrating an example 400 of data transmission and data retransmission with mTRPs, in accordance with various aspects of the present disclosure.
[0052] As Figure 4 indicated in FIG. 6, the UE 102 associated with the vehicle can transmit a V2X packet that is received at a first TRP (TRP1) and a second TRP (TRP2). The UE 102 can transmit the V2X packet to achieve 360-degree coverage to improve control reception. In some cases, at a later time, the UE 102 can retransmit the V2X packet. The retransmitted V2X packet can be received at the first TRP and the second TRP. The retransmission of the V2X packet can be biased towards the front side of the UE 102 because the front of the UE 102 can have increased priority compared to the back side of the UE 102.
[0053] As indicated above, Figure 4 are provided by way of example. Other examples can differ from those described Figure 4 without departing from the spirit of the disclosure.
[0054] Figure 5 is a diagram illustrating an example 500 of aperiodic resource reservation, in accordance with various aspects of the present disclosure.
[0055] Sidelink control information (SCI) can carry resource reservation information. The SCI can be transmitted from a first UE to a second UE over a sidelink interface. The resource reservation information can be transmitted periodically or aperiodically from the first UE.
[0056] As Figure 5 indicated in FIG. 7, the resource reservation information can reserve sidelink resources in the current slot (in which the resource reservation information is transmitted) and up to two slots that occur later in time. The resource reservation information can define a resource allocation in the frequency domain in units of subchannels. The resource allocation can be limited to one slot in the time domain.
[0057] The SCI can be a first-stage SCI transmitted from the first UE according to SCI format 0-1. The SCI can include a priority value, such as a quality of service (QoS) value. The SCI can include a physical sidelink shared channel (PSSCH) resource assignment, which can define frequency and time resources for the PSSCH. The SCI can include a resource reservation period. When multiple PSSCH DMRS patterns are preconfigured, the SCI can include a PSSCH DMRS pattern. The SCI can include a second-stage SCI format, which can include information related to a size of the second-stage SCI. The SCI can include a 2-bit beta offset indicator for control resource allocation associated with the second-stage SCI. The SCI can include a 1-bit field indicating a number of PSSCH DMRS ports. The SCI can include a 5-bit field indicating an MCS. The SCI can not include a transmission configuration indicator (TCI) state (e.g., no TCI state indication for the first-stage SCI).
[0058] As indicated above, Figure 5 are provided as examples. Other examples can differ from what is described Figure 5 with respect to the examples described.
[0059] Figure 6 FIG. 6 is a diagram illustrating an example 600 showing a user plane protocol stack, in accordance with various aspects of the present disclosure.
[0060] As Figure 6 indicated in FIG. 6, a first UE (UE A) and a second UE (UE B) can communicate via a user plane for an NR PC5 reference point (also referred to as a PC5 user plane protocol stack). For the first UE and the second UE, the NR PC5 reference point can include a V2X application (V2X App) layer, a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a medium access control (MAC) layer, and a physical (PHY) layer. Internet protocol (IP) and non-IP PDCP service data unit (SDU) types can be supported for V2X communications over the NR PC5 reference point.
[0061] As indicated above, Figure 6 are provided as examples. Other examples can differ from what is described Figure 6 with respect to the examples described.
[0062] Figure 7 FIG. 7 is a diagram illustrating an example 700 showing quality of service handling for packets, in accordance with various aspects of the present disclosure.
[0063] Quality of service (QoS) handling can be performed for V2X communications over the NR PC5 reference point. As Figure 7As shown in FIG. 2, a V2X packet can be received at a V2X layer. The V2X layer can be included in a protocol stack of a UE. The V2X layer can communicate with a V2X application layer of the UE. A PC5 QoS flow, which can be associated with a PC5 QoS rule and QoS parameters, can be applied to the V2X packet. The V2X packet and a corresponding QoS flow identifier (QFI) can be provided to a SDAP layer, at which a PC5 QoS flow can be mapped to a sidelink radio bearer. The sidelink radio bearer can be associated with a PDCP layer, an RLC layer, a MAC layer, and a PHY layer.
[0064] The V2X layer can indicate QoS parameters associated with the V2X packet. The QoS parameters can include QoS parameters mapped to a PC5 QoS identifier (PQI) on a per-PC5 QoS flow basis and / or QoS parameters for dynamic control on a per-packet basis. The QoS parameters can include a resource type, such as a guaranteed bit rate (GBR), a delay-critical GBR, or a non-GBR. The QoS parameters can include a priority level. The QoS parameters can include a packet delay budget. The QoS parameters can include a packet error rate. The QoS parameters can include an average window for GBR and delay-critical GBR resource types. The QoS parameters can include a maximum data burst volume for delay-critical GBR resource types. The QoS parameters can include a range parameter for V2X groupcast transmissions, where the range parameter can indicate a minimum distance for which the QoS parameters are to be implemented. The QoS parameters can not include a direction indication.
[0065] As indicated above, Figure 7 are provided by way of example. Other examples can differ from Figure 7 the examples described.
[0066] In mTRP scenarios, a UE (e.g., a vehicle) can transmit and / or retransmit a V2X packet with some bias, as the TRPs configured to receive the V2X packet can be located in different directions relative to the UE, and the TRPs can each be associated with different priority levels. The UE can benefit by applying different transmission parameters (e.g., different precoders) to the V2X packet transmission (or retransmission) according to the various directionality of the TRPs relative to the UE. However, past solutions do not allow the UE to apply different transmission parameters (e.g., precoder variations) to the V2X packet transmission (or retransmission) according to the various directionality of the TRPs relative to the UE.
[0067] In various aspects of the techniques and apparatuses described herein, a UE can provide a received V2X packet to a protocol stack layer of the UE. The V2X packet can be duplicated at the protocol stack layer of the UE to form a plurality of duplicated V2X packets. The duplicated V2X packets can be associated with a direction range. The direction range can correspond to a directionality of a TRP. A transmission parameter (e.g., a precoder) for a duplicated V2X packet can be selected based at least in part on the direction range associated with the duplicated V2X packet. Thus, each duplicated V2X packet can be transmitted or retransmitted in accordance with a transmission parameter (e.g., a precoder) selected based at least in part on the directionality of the TRP.
[0068] Figure 8 is a diagram illustrating an example 800 associated with duplication of packets associated with a direction range, in accordance with various aspects of the present disclosure. As shown in Figure 8 As shown in example 800, the first UE (e.g., UE 120a) and the second UE (e.g., UE 120e) can be included in a wireless network, such as the wireless network 100. The first UE and the second UE can communicate over a wireless sidelink.
[0069] As shown by reference number 802, the first UE can receive a V2X packet. As described herein, a “V2X packet” can refer to a complete V2X packet, a portion of a V2X packet, a V2X data packet, and / or the like. The V2X packet can be received for transmission to the second UE.
[0070] As shown by reference number 804, the V2X packet can be provided to a protocol stack layer of the first UE. In some aspects, the V2X packet can be provided to a V2X layer of the first UE. In some aspects, the V2X packet can be provided to a PDCP layer of the first UE. In some aspects, the V2X packet can be provided to a MAC layer of the first UE. In some aspects, the V2X packet can be provided to other protocol stack layers of the first UE.
[0071] In some aspects, the V2X packet can be provided directly as data to the protocol stack layer of the first UE. In some aspects, the V2X packet can be provided indirectly (e.g., via accessible memory) to the protocol stack layer of the first UE. In other words, the V2X packet can be provided to the protocol stack layer of the first UE based at least in part on a push mechanism and / or a pull mechanism. In some aspects, the V2X packet can be provided (directly or indirectly) from a first protocol stack layer of the first UE to a second protocol stack layer of the first UE, where the second protocol stack layer can include a V2X layer, a PDCP layer, a MAC layer, and / or the like.
[0072] As shown by reference number 806, the V2X packet can be duplicated at a protocol stack layer of the UE to form a plurality of duplicated V2X packets. The duplicated V2X packets can be associated with a directional range, and different duplicated V2X packets can be associated with different directional ranges. In some aspects, the V2X packet can be duplicated at a V2X layer to form a plurality of duplicated V2X packets. In some aspects, the V2X packet can be duplicated at a PDCP layer to form a plurality of duplicated V2X packets. In some aspects, the V2X packet can be duplicated at a MAC layer to form a plurality of duplicated V2X packets.
[0073] In some aspects, the V2X layer can be duplicated at another protocol stack layer of the first UE to form a plurality of V2X packets. In other words, duplication of the V2X packet at the V2X layer, the PDCP layer, and / or the MAC layer of the first UE is not intended to be limiting.
[0074] In some aspects, when the V2X packet is duplicated at the V2X layer, the V2X layer can provide the plurality of duplicated V2X packets to different PFIs, where each PFI can be associated with a set of QoS parameters and a directional range. The set of QoS parameters can include a packet priority, a reliability, a latency, and / or the like for the directional range. The V2X packet can be duplicated to different PFIs to differentiate directional importance of the V2X packet.
[0075] In some aspects, when the V2X packet is duplicated at the PDCP layer, the V2X packet can be duplicated using different directional range indications. The V2X packet can be duplicated at the PDCP layer when dynamic per-packet range is enabled for the first UE. In this case, the duplicated V2X packets can be duplicated PDCP SDUs from the same PQI, but can be associated with unique directional ranges.
[0076] In some aspects, the first UE can perform hybrid automatic repeat request (HARQ) feedback for the duplicated V2X packet when the V2X packet is duplicated at the MAC layer. The first UE can transmit the HARQ feedback based at least in part on a directional range associated with the duplicated V2X packet. In some cases, the first UE can perform HARQ combining of the HARQ feedback associated with the duplicated V2X packet. The duplicated V2X packet can be a duplicated MAC SDU with different directional ranges, which allows for HARQ combining to be performed. The HARQ combining can be performed for duplicated V2X packets associated with different transmission parameters (e.g., different precoders). In some aspects, the duplicated V2X packet can be associated with a MAC PDU group, and the first UE can combine HARQ feedback between one or more HARQ processes associated with the MAC PDU group, where a separate HARQ process can be assigned for each directional range associated with the duplicated V2X packet. The first UE can determine to perform HARQ combining for the MAC PDU group based at least in part on an indication received via an upper layer of the first UE.
[0077] In some aspects, a PFI can be associated with a unique set of QoS parameters and a unique directional range. As one example, different PFIs can include a first PFI associated with a first directional range and a second PFI associated with a second directional range. The first directional range can be associated with a first direction of the first UE, and the second directional range can be associated with a second direction of the first UE. The first direction and the second direction can include a front side direction, a back side direction, a left side direction, a right side direction, and / or the like.
[0078] In some aspects, the first UE can select a protocol stack layer to duplicate the V2X packet based at least in part on a directional priority associated with the V2X packet and / or when the first UE is to perform HARQ combining for the duplicated V2X packet. In other words, depending on the directional priority associated with the V2X packet and / or the HARQ combining, the first UE can duplicate the V2X packet at a V2X layer, a PDCP layer, or a MAC layer.
[0079] In some aspects, the first UE can select a protocol stack layer to duplicate the V2X packet based at least in part on an application requirement and / or whether HARQ combining is to be performed at the first UE. In some aspects, the V2X packet can be duplicated at the V2X layer when each transmission (or retransmission) direction is associated with a different packet priority, latency, reliability, and / or the like. In this case, the V2X packet can be duplicated to a corresponding QoS flow for each direction. In some aspects, the V2X packet can be duplicated at the PDCP layer when each transmission (or retransmission) direction is associated with the same packet priority, latency, reliability, and / or the like, and dynamic per-packet range is supported at the first UE. In this case, the PDCP layer can duplicate the same V2X packet to various PDCP PDUs, where each PDCP PDU can be associated with a particular direction range. In some aspects, the V2X packet can be duplicated at the MAC layer when HARQ combining is to be performed at the MAC layer of the first UE. In this case, the V2X packet can be duplicated to form a duplicated MAC PDU. The duplicated MAC PDU can be marked as belonging to the same MAC PDU group and HARQ combining can be performed among HARQ processes within the MAC PDU group.
[0080] In some aspects, whether the V2X packet is duplicated at the V2X layer, the PDCP layer, or the MAC layer, the first UE can apply different transmission parameters (e.g., precoder changes) to the duplicated V2X packet based at least in part on a direction range (or directionality) associated with each duplicated V2X packet.
[0081] As shown by a block 808, the first UE can transmit (or retransmit) the duplicated V2X packet to the second UE. The duplicated V2X packet can be transmitted to the second UE according to one or more transmission parameters. The one or more transmission parameters can include a precoder, power splitting information, and / or the like. The first UE can select the one or more transmission parameters based at least in part on a direction range associated with the duplicated V2X packet. In other words, the first UE can change the transmission parameters (e.g., perform precoder changes) according to the direction range associated with the duplicated V2X packet.
[0082] As indicated above, Figure 8 are provided as examples. Other examples can differ from what is described with respect to at least one of the Figure 8 described examples.
[0083] Figure 9 is a diagram illustrating an example 900 associated with duplication of packets associated with direction ranges, in accordance with various aspects of the present disclosure.
[0084] As Figure 9As shown in FIG. 10, a V2X packet can be received at a V2X layer of a UE. The V2X layer can receive the V2X packet, a V2X service type, and / or a V2X application requirement from a V2X application layer. The V2X layer can duplicate the same V2X packet and / or V2X service to different PFIs to distinguish direction importance of the V2X packet. The V2X packet can be mapped to different PFIs associated with different PC5 QoS flows. Different PFIs can be associated with PC5 QoS rules. A PFI can be associated with unique QoS parameters, such as a PQI, a direction range, and / or the like. A PFI can be associated with a unique direction range. Different PFIs can be associated with different QoS characteristics, such as packet priority in the associated direction range, latency requirement, and / or the like. A PFI can be associated with the same V2X service type.
[0085] As one example, a V2X packet can be duplicated using a first PFI to form a first duplicated V2X packet. The V2X packet can be duplicated using a second PFI to form a second duplicated V2X packet. The first duplicated V2X packet can be associated with a first direction range (e.g., front side direction), a first reliability requirement, and a first priority requirement. The second duplicated V2X packet can be associated with a second direction range (e.g., back side direction), a second reliability requirement, and a second priority requirement. In this example, each duplicated V2X packet can be associated with unique QoS characteristics and a unique direction range.
[0086] As noted above, Figure 9 is provided as an example. Other examples can differ from that described with Figure 9 respect to the example described with respect to
[0087] Figure 10 is a diagram illustrating an example 1000 associated with duplication of packets associated with direction ranges, in accordance with various aspects of the present disclosure.
[0088] As Figure 10As shown in FIG. 11, a V2X packet can be received at a V2X layer of a UE. The V2X layer can receive the V2X packet and a corresponding PFI. The V2X layer can forward the V2X packet to a SDAP layer of the UE. The SDAP layer can map the V2X packet to a sidelink radio bearer. The sidelink radio bearer can include a PDCP layer of the UE. The PDCP layer can replicate the V2X packet to form a replicated V2X packet when the replicated V2X packet has different directional importance but the same requirements in terms of priority, latency, reliability, and / or the like. The replicated V2X packet can be associated with different directional ranges. The UE can select a transmission parameter (e.g., a precoder) to apply during transmission or retransmission of the replicated V2X packet based at least in part on a directional range associated with the replicated V2X packet, a bias (or bias importance) associated with the replicated V2X packet, feedback received at the UE, and / or the like.
[0089] In some aspects, the PDCP layer can replicate the V2X packet by forming replicated PDCP PDUs associated with different directional ranges. For example, the replicated PDCP PDUs can be associated with a PQI and a particular directional range. Replicating the V2X packet at the PDCP layer has no or minimal impact on V2X layer PC5 QoS processing and / or SDAP layer radio bearer mapping.
[0090] As indicated above, Figure 10 are provided as examples. Other examples can differ from what is described Figure 10 with respect to the examples described.
[0091] Figure 11 is a diagram illustrating an example 1100 associated with replication of packets associated with directional ranges, in accordance with various aspects of the present disclosure.
[0092] As Figure 11 As shown in FIG. 11, a V2X packet can be received at a V2X layer of a UE. The V2X layer can receive the V2X packet and a corresponding PFI. The V2X layer can forward the V2X packet to a SDAP layer of the UE. The SDAP layer can map the V2X packet to a sidelink radio bearer. The sidelink radio bearer can include a PDCP layer of the UE. The PDCP layer can replicate the V2X packet to form a replicated V2X packet when the replicated V2X packet has different directional importance but the same requirements in terms of priority, latency, reliability, and / or the like. The replicated V2X packet can be associated with different directional ranges. The UE can select a transmission parameter (e.g., a precoder) to apply during transmission or retransmission of the replicated V2X packet based at least in part on a directional range associated with the replicated V2X packet, a bias (or bias importance) associated with the replicated V2X packet, feedback received at the UE, and / or the like.
[0093] In some aspects, the UE can establish different HARQ processes for different directional ranges associated with the duplicated V2X packet. For example, the UE can establish a first HARQ process for a first directional range associated with the duplicated V2X packet, a second HARQ process for a second directional range associated with the duplicated V2X packet, and so on. The different HARQ processes can be associated with transmission parameters (such as associated transmit precoders, power splitting information, and / or the like), where the transmission parameters can be based at least in part on the different directional ranges associated with the duplicated V2X packet.
[0094] In some aspects, the MAC layer can duplicate a V2X packet by forming duplicated MAC PDUs associated with different directional ranges. The duplicated MAC PDUs can have the same V2X packet, but can be associated with different directional ranges. In some cases, when HARQ combining is to be performed at the MAC layer, the MAC PDUs can be tagged to the same MAC PDU group. The MAC PDUs can be tagged to the same MAC PDU group to indicate that HARQ combining can be performed between HARQ processes within the MAC PDU group. By duplicating the V2X packet at the MAC layer, HARQ combining can be implemented between the duplicated MAC PDUs associated with different directional ranges and / or different transmission parameters (e.g., different precoders).
[0095] As indicated above, Figure 11 are provided as examples. Other examples can differ from what is described with respect to at least one of the Figure 11 described examples.
[0096] Figure 12 is a schematic illustration of an example process 1200 performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 1200 is an example where the UE (e.g., UE 120) performs operations associated with duplication of packets associated with directional ranges.
[0097] As Figure 12 indicated in FIG. 12, in some aspects, process 1200 can include receiving a V2X packet (block 1210). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller / processor 280, and / or memory 282) can receive a V2X packet, as described above.
[0098] As Figure 12As further shown in Fig. 12, in some aspects, process 1200 can include copying, at a protocol stack layer of the UE, the V2X packet to form a plurality of copied V2X packets, where each copied V2X packet is associated with a directional range (block 1220). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, and / or memory 282) can copy, at a protocol stack layer of the UE, the V2X packet to form a plurality of copied V2X packets, where each copied V2X packet is associated with a directional range, as described above.
[0099] Process 1200 can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.
[0100] In a first aspect, copying, at a protocol stack layer of the UE, the V2X packet to form a plurality of copied V2X packets includes copying the V2X packet at a V2X layer of the UE.
[0101] In a second aspect, alone or in combination with the first aspect, process 1200 includes providing the plurality of copied V2X packets to different PFIs, where each PFI is associated with a unique set of QoS parameters and a unique directional range.
[0102] In a third aspect, alone or in combination with one or more of the first and second aspects, the set of QoS parameters includes at least a packet priority, a reliability, a latency, or a combination thereof for the directional range.
[0103] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the PFI includes a first PFI associated with a first directional range and a second PFI associated with a second directional range, where the first directional range is associated with a first direction of the UE and the second directional range is associated with a second direction of the UE.
[0104] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, copying the V2X packet to form a plurality of copied V2X packets includes copying the V2X packet to different PFIs to differentiate directional importance of the V2X packet.
[0105] In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, copying, at a protocol stack layer of the UE, the V2X packet to form a plurality of copied V2X packets includes copying the V2X packet at a PDCP layer of the UE.
[0106] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, process 1200 includes selecting the protocol stack layer of the UE based at least in part on a direction priority associated with the V2X packet or a HARQ combining to be performed by the UE for the duplicated V2X packet.
[0107] In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, process 1200 includes providing the multiple duplicated V2X packets to a single PFI, wherein the single PFI is associated with a set of QoS parameters and each duplicated V2X packet is associated with a unique direction range.
[0108] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, process 1200 includes transmitting the HARQ feedback based at least in part on the direction range associated with the duplicated V2X packet.
[0109] In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, duplicating the V2X packet at the protocol stack layer of the UE to form the multiple duplicated V2X packets includes duplicating the V2X packet at a MAC layer of the UE.
[0110] In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, process 1200 includes associating the multiple duplicated V2X packets with a MAC PDU group and combining HARQ feedback between one or more HARQ processes associated with the MAC PDU group, wherein an indication of the MAC PDU group to be combined is received via an upper layer of the UE.
[0111] In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, combining the HARQ feedback includes performing HARQ combining for duplicated V2X packets associated with different precoders, wherein the different precoders are selected based at least in part on the direction range associated with the duplicated V2X packet.
[0112] In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, process 1200 includes assigning a HARQ process for each direction range associated with the multiple duplicated V2X packets.
[0113] In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, process 1200 includes selecting one or more transmission parameters based at least in part on the directional range associated with the duplicated V2X packet, wherein the one or more transmission parameters include at least a precoder, power splitting information, or a combination thereof; and transmitting the plurality of duplicated V2X packets to the one or more second UEs using the one or more transmission parameters.
[0114] In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, transmitting the plurality of duplicated V2X packets includes performing a retransmission of the plurality of duplicated V2X packets.
[0115] Although Figure 12 Example blocks of process 1200 are illustrated, but in some aspects, process 1200 can include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. 12. Additionally, or alternatively, two or more of the blocks of process 1200 can be performed in parallel. Figure 12
[0116] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations can be made in light of the above disclosure or can be acquired from practice of the aspects.
[0117] As used herein, the term “component” is intended to be broadly interpreted to include hardware, firmware, and / or combinations of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or combinations of hardware and software. It will be apparent that systems and / or methods described herein can be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and / or methods were described herein without reference to specific software code — it being understood that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.
[0118] As used herein, depending on the context, satisfying a threshold can refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and / or the like.
[0119] Even if a particular feature is expressly identified as an aspect in a claim, among other places, such disclosure simply serves as an example of that feature. The scope of the aspects is not limited to the specific examples given and the scope is specified only by the claims. Furthermore, to the extent that the terms "includes," "including," "has," "having," "contains" or "containing," or variants thereof, are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term "comprising" as an open term with the most suitable scope enumerated by the claims. Also, the term "another" is used herein to mean "one or more than one" unless explicitly stated otherwise. Furthermore, to the extent that the term "or" is used in the detailed description or claims (such as the phrase "X and Y, or Z" is intended to cover the combinations X and Y, Y and Z, and Z and X, in addition to the combinations X and Y, Y and Z, and X and Z. Also, the term "about" is used herein to mean approximately, roughly, around, or in the immediate vicinity of a numeric value, unless otherwise explicitly described. Thus, for example, the expression "about 90°" or "about 90 degrees" means approximately 90°, plus or minus a few degrees, such as plus or minus 5 degrees. Similarly, the expression "about 90" means the range from 85 to 95, or more particularly, 90 plus or minus 10%, or more particularly, 90 plus or minus 5%. Furthermore, to the extent that the term "substantially" is used in the detailed description or claims, such term is intended to refer to things which are desirable or beneficial but not necessarily absolutely required. Moreover, the terms "example" and "exemplary" are used herein to mean serving as an instance, example, or implementation, and not to imply a preference as preferred over other examples. Also, the term "in accordance with" is used herein to mean in accordance with or in compliance with, unless explicitly stated otherwise.
[0120] No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items, and can be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items, and can be used interchangeably with “the one or more.” Also, as used herein, the terms “set” and “group” are intended to include one or more items (for example, related items, unrelated items, a combination of related and unrelated items, or the like), and can be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has,” “have,” “having,” and / or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series and can be used interchangeably with “and / or,” unless explicitly stated otherwise (e.g., if used in combination with “or else” or “solely”).
Claims
1. A method of wireless communication performed by a user equipment (UE), comprising: receiving a vehicle-to-everything (V2X) packet; replicating, at a protocol stack layer of the UE, the V2X packet to form a plurality of replicated V2X packets, wherein each replicated V2X packet is associated with a directional range; and providing the plurality of replicated V2X packets to different PC5 quality of service (QoS) flow identifiers (IDs) (PFIs), wherein each of the different PFIs is associated with a unique set of QoS parameters and a unique directional range, wherein the unique set of QoS parameters includes at least a packet priority, a reliability, a latency, or a combination thereof for the directional range, and wherein replicating the V2X packet to form the plurality of replicated V2X packets comprises replicating the V2X packet to the different PFIs to differentiate directional importance of the plurality of replicated V2X packets.
2. The method of claim 1, wherein: replicating, at the protocol stack layer of the UE, the V2X packet to form the plurality of replicated V2X packets comprises replicating the V2X packet at a V2X layer of the UE.
3. The method of claim 1, wherein, the different PFIs include a first PFI associated with a first directional range and a second PFI associated with a second directional range, wherein the first directional range is associated with a first direction of the UE and the second directional range is associated with a second direction of the UE.
4. The method of claim 1, wherein: replicating, at the protocol stack layer of the UE, the V2X packet to form the plurality of replicated V2X packets comprises replicating the V2X packet at a packet data convergence protocol (PDCP) layer of the UE.
5. The method of claim 1, further comprising: selecting the protocol stack layer of the UE based at least in part on a directional priority associated with the V2X packet or a hybrid automatic repeat request (HARQ) combining to be performed by the UE for the plurality of replicated V2X packets.
6. The method of claim 1, further comprising: providing the plurality of replicated V2X packets to a single PC5 quality of service (QoS) flow identifier (ID) (PFI), wherein the single PFI is associated with a set of QoS parameters and each replicated V2X packet is associated with a unique directional range.
7. The method of claim 1, further comprising: transmitting hybrid automatic repeat request (HARQ) feedback based at least in part on the directional range associated with the plurality of replicated V2X packets.
8. The method of claim 1, wherein: replicating, at the protocol stack layer of the UE, the V2X packet to form the plurality of replicated V2X packets comprises replicating the V2X packet at a medium access control (MAC) layer of the UE.
9. The method of claim 8, further comprising: associating the plurality of replicated V2X packets with a group of MAC packet data units (PDUs); and combining HARQ feedback among one or more hybrid automatic repeat request (HARQ) processes associated with a group of MAC PDUs, wherein an indication of the group of MAC PDUs to be combined is received via an upper layer of the UE.
10. The method of claim 9, wherein, combining the HARQ feedback comprises performing HARQ combining for duplicated V2X packets associated with different precoders, wherein the different precoders are selected based at least in part on the direction ranges associated with the duplicated V2X packets.
11. The method of claim 1, further comprising: assigning a hybrid automatic repeat request (HARQ) process for each direction range associated with the plurality of duplicated V2X packets.
12. The method of claim 1, further comprising: selecting one or more transmission parameters based at least in part on the direction ranges associated with the plurality of duplicated V2X packets, wherein the one or more transmission parameters comprise at least: a precoder, power splitting information, or a combination thereof; and transmitting the plurality of duplicated V2X packets to one or more second UEs using the one or more transmission parameters.
13. The method of claim 12, wherein, transmitting the plurality of duplicated V2X packets comprises performing retransmission of the plurality of duplicated V2X packets.
14. A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: receive a vehicle-to-everything (V2X) packet; duplicate the V2X packet at a protocol stack layer of the UE to form a plurality of duplicated V2X packets, wherein each duplicated V2X packet is associated with a direction range; and provide the plurality of duplicated V2X packets to different PC5 quality of service (QoS) flow identifiers (IDs) (PFIs), wherein each of the different PFIs is associated with a unique set of QoS parameters and a unique direction range, wherein the unique set of QoS parameters comprises at least a packet priority, a reliability, a latency, or a combination thereof for the direction range, and wherein duplicating the V2X packet to form the plurality of duplicated V2X packets comprises duplicating the V2X packet to the different PFIs to differentiate direction importance of the plurality of duplicated V2X packets.
15. The UE of claim 14, wherein: duplication of the V2X packet at the protocol stack layer of the UE to form the plurality of duplicated V2X packets comprises duplication of the V2X packet at a V2X layer of the UE.
16. The UE of claim 14, wherein, the different PFIs comprise a first PFI associated with a first direction range and a second PFI associated with a second direction range, wherein the first direction range is associated with a first direction of the UE and the second direction range is associated with a second direction of the UE.
17. The UE of claim 14, wherein: copying, at a protocol stack layer of the UE, the V2X packet to form the plurality of duplicated V2X packets comprises copying, at a packet data convergence protocol (PDCP) layer of the UE, the V2X packet.
18. The UE of claim 14, wherein, The one or more processors are further configured to: select the protocol stack layer of the UE based at least in part on a direction priority associated with the V2X packet or a hybrid automatic repeat request (HARQ) combining to be performed by the UE for the plurality of duplicated V2X packets.
19. The UE of claim 14, wherein, The one or more processors are further configured to: provide the plurality of duplicated V2X packets to a single PC5 quality of service (QoS) flow identifier (ID) (PFI), wherein the single PFI is associated with a set of QoS parameters and each duplicated V2X packet is associated with a unique direction range.
20. The UE of claim 14, wherein, The one or more processors are further configured to: transmit hybrid automatic repeat request (HARQ) feedback based at least in part on the direction ranges associated with the plurality of duplicated V2X packets.
21. The UE of claim 14, wherein: copying, at a protocol stack layer of the UE, the V2X packet to form the plurality of duplicated V2X packets comprises copying, at a medium access control (MAC) layer of the UE, the V2X packet.
22. The UE of claim 21, wherein, The one or more processors are further configured to: associate the plurality of duplicated V2X packets with MAC packet data unit (PDU) groups; and combine HARQ feedback across one or more hybrid automatic repeat request (HARQ) processes associated with the MAC PDU groups, wherein an indication of the MAC PDU groups to be combined is received via an upper layer of the UE.
23. The UE of claim 22, wherein, combining the HARQ feedback comprises performing HARQ combining for duplicated V2X packets associated with different precoders, wherein the different precoders are selected based at least in part on the direction ranges associated with the duplicated V2X packets.
24. The UE of claim 14, wherein, The one or more processors are further configured to: assign a hybrid automatic repeat request (HARQ) process for each direction range associated with the plurality of duplicated V2X packets.
25. The UE of claim 14, wherein, The one or more processors are further configured to: select one or more transmission parameters based at least in part on the direction ranges associated with the plurality of duplicated V2X packets, wherein the one or more transmission parameters comprise at least: a precoder, power splitting information, or a combination thereof; and transmit, to one or more second UEs, the plurality of duplicated V2X packets using the one or more transmission parameters.
26. The UE of claim 25, wherein, The one or more processors, when transmitting the plurality of duplicated V2X packets, are configured to perform retransmission of the plurality of duplicated V2X packets.
27. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: receive a vehicle-to-everything (V2X) packet; copy the V2X packet at a protocol stack layer of the UE to form a plurality of copied V2X packets, wherein each copied V2X packet is associated with a directional range; and provide the plurality of copied V2X packets to different PC5 service quality (QoS) flow identifiers (IDs) (PFIs), wherein each of the different PFIs is associated with a unique set of QoS parameters and a unique directional range, wherein the unique set of QoS parameters includes at least a packet priority, a reliability, a latency, or a combination thereof for the directional range, and wherein copying the V2X packet to form the plurality of copied V2X packets includes copying the V2X packet to the different PFIs to differentiate directional importance of the plurality of copied V2X packets.
28. The non-transitory computer-readable medium of claim 27, wherein, The one or more instructions cause the UE to: copy the V2X packet at a V2X layer of the UE.
29. An apparatus for wireless communication, comprising: means for receiving a vehicle-to-everything (V2X) packet; means for copying the V2X packet at a protocol stack layer of the apparatus to form a plurality of copied V2X packets, wherein each copied V2X packet is associated with a directional range; and means for providing the plurality of copied V2X packets to different PC5 service quality (QoS) flow identifiers (IDs) (PFIs), wherein each of the different PFIs is associated with a unique set of QoS parameters and a unique directional range, wherein the unique set of QoS parameters includes at least a packet priority, a reliability, a latency, or a combination thereof for the directional range, and wherein copying the V2X packet to form the plurality of copied V2X packets includes copying the V2X packet to the different PFIs to differentiate directional importance of the plurality of copied V2X packets.
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