Resource allocation and processing behaviors for nr v2x sidelink communications

Patent metadata

Field	Value
Publication number	US-2021400650-A1
Application number	US-201917287754-A
Country	US
Kind code	A1
Filing date	Nov 1, 2019
Priority date	Nov 2, 2018
Publication date	Dec 23, 2021
Grant date	—

Abstract

An apparatus of user equipment (UE) includes processing circuitry coupled to a memory, where to configure the UE for New Radio (NR) vehicle-to-everything (V2X) sidelink communication. The processing circuitry is to determine a set of candidate resources of the UE from a sidelink resource pool, the sidelink resource divided into multiple time slots, frequency channels, and frequency sub-channels. Sidelink control information (SCI) is encoded for transmission to a second UE via a physical sidelink control channel (PSCCH). The SCI indicates a plurality of transmission resources of the set of candidate resources. A transport block is mapped across the plurality of transmission resources. A physical sidelink shared channel (PSSCH) is encoded for transmission to the second UE using the plurality of transmission resources, the PSSCH encoded to include the mapped transport block.

First claim

1 .- 20 . (canceled)

21 . An apparatus, comprising:
a memory; and processing circuitry in communication with the memory, wherein, to configure a user equipment (UE) for vehicle-to-everything (V2X) sidelink communication, the processing circuitry is configured to: determine a set of candidate resources of the UE from a sidelink resource pool, wherein the sidelink resource is divided into multiple time slots, frequency channels, and frequency sub-channels; encode sidelink control information (SCI) for transmission to a second UE via a physical sidelink control channel (PSCCH), wherein the SCI indicates a plurality of transmission resources of the set of candidate resources; map a transport block across the plurality of transmission resources; and encode a physical sidelink shared channel (PSSCH) for transmission to the second UE using the plurality of transmission resources, wherein the PSSCH is encoded to include the mapped transport block.

22 . The apparatus of claim 21 ,
wherein the plurality of transmission resources includes N number of the time slots, the frequency channels, or the frequency sub-channels, and wherein N is an integer and N>2.

23 . The apparatus of claim 21 ,
wherein the set of candidate resources is determined during a resource selection window, wherein the resource selection window is configurable, and wherein the resource selection window is determined based on packet delay budget information.

24 . The apparatus of claim 21 ,
wherein the processing circuitry is further configured to:
cause discontinuous transmission in time of the mapped transport block, wherein the discontinuous transmission includes N number of transmission resources of the plurality of transmission resources, wherein N is an integer greater than or equal to 2, and wherein channel access boundaries for the PSSCH are aligned at a slot level.

25 . The apparatus of claim 21 ,
wherein the processing circuitry is further configured to:
select the plurality of transmission resources from the set of candidate resources, based on earliest in time resources after the transport block becomes available for transmission.

26 . The apparatus of claim 21 ,
wherein the processing circuitry is further configured to:
detect a PSCCH transmission from the second UE prior to the transmission of the mapped transport block, wherein the detected PSCCH transmission indicates candidate resources of the second UE for subsequent PSSCH transmissions; and
revise the set of candidate resources of the UE based on avoiding collision with the candidate resources of the second UE.

27 . The apparatus of claim 21 ,
wherein the processing circuitry is further configured to:
perform channel quality measurements within a sensing window to determine the sidelink resource pool.

28 . The apparatus of claim 27 ,
wherein the sensing window is configurable based on at least a maximum reservation interval associated with the V2X sidelink communication.

29 . The apparatus of claim 21 ,
wherein the processing circuitry is further configured to:
perform small scale sensing by monitoring the plurality of transmission resources prior to transmission of the mapped transport block.

30 . The apparatus of claim 29 ,
wherein the processing circuitry is further configured to:
detect a signal on one of the plurality of transmission resources during the small scale sensing;
perform signal measurements on the detected signal; and
determine to proceed with the transmission of the mapped transport block or perform random back-off based on the signal measurements.

31 . The apparatus of claim 29 ,
wherein the processing circuitry is further configured to:
determine to proceed with the transmission of the mapped transport block or perform random back-off based on detecting a resource reservation during the small scale sensing.

32 . The apparatus of claim 21 ,
wherein the processing circuitry is further configured to:
decode PSCCH data and PSSCH data from the second UE, wherein a number of decoding attempts for the PSCCH data is equal to the number of decoding attempts for the PSSCH data.

33 . The apparatus of claim 21 ,
further comprising transceiver circuitry coupled to the processing circuitry; and one or more antennas coupled to the transceiver circuitry.

34 . A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the instructions to configure the UE for New Radio (NR) vehicle-to-everything (V2X) sidelink communication, and to cause the UE to:
determine during a resource selection window, a set of candidate resources of the UE from a sidelink resource pool, wherein the sidelink resource is divided into multiple time slots, frequency channels, and frequency sub-channels; select a plurality of transmission resources from the set of candidate resources, based on earliest in time resources after a transport block becomes available for transmission to a second UE; encode sidelink control information (SCI) for transmission to the second UE via a physical sidelink control channel (PSCCH), wherein the SCI indicates the plurality of transmission resources of the set of candidate resources; map the transport block across the plurality of transmission resources; and encode a physical sidelink shared channel (PSSCH) for transmission to the second UE using the plurality of transmission resources, the PSSCH encoded to include the mapped transport block.

35 . The non-transitory computer-readable storage medium of claim 34 ,
wherein the instructions further cause the UE to:
perform small scale sensing by monitoring the plurality of transmission resources prior to transmission of the mapped transport block; and
determine to proceed with the transmission of the mapped transport block or perform random back-off based on detecting a resource reservation during the small scale sensing.

36 . A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the instructions to configure the UE for New Radio (NR) vehicle-to-everything (V2X) sidelink communication, and to cause the UE to:
determine a set of candidate resources of the UE from a sidelink resource pool, wherein the sidelink resource is divided into multiple time slots, frequency channels, and frequency sub-channels; encode sidelink control information (SCI) for transmission to a second UE via a physical sidelink control channel (PSCCH), wherein the SCI indicate a plurality of transmission resources of the set of candidate resources; map a transport block across the plurality of transmission resources; and encode a physical sidelink shared channel (PSSCH) for transmission to the second UE using the plurality of transmission resources, wherein the PSSCH is encoded to include the mapped transport block.

37 . The non-transitory computer-readable storage medium of claim 36 ,
wherein the instructions further cause the UE to:
cause discontinuous transmission in time of the mapped transport block, wherein the discontinuous transmission includes N number of transmission resources of the plurality of transmission resources, wherein N is an integer greater than or equal to 2, and wherein channel access boundaries for the PSSCH are aligned at a slot level.

38 . The non-transitory computer-readable storage medium of claim 36 ,
wherein the instructions further cause the UE to:
detect a PSCCH transmission from the secon

Assignees

• Apple Inc

Inventors

• Shilov Mikhail
• Khoryaev Alexey
• Panteleev Sergey
• Chervyakov Andrey
• Belov Dmitry

Classifications

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04W72/02

  Selection of wireless resources by user or terminal · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title