Pscch control channel design for nr v2x sidelink communication and pscch dmrs physical structures

Patent metadata

Field	Value
Publication number	US-2022191875-A1
Application number	US-202017440586-A
Country	US
Kind code	A1
Filing date	Apr 1, 2020
Priority date	Apr 1, 2019
Publication date	Jun 16, 2022
Grant date	—

Abstract

A method for allocating channel resources for transmitting data by user equipment (UE), includes receiving a resource allocation specification for a PSCCH transmission on PSSCH resources. The resource allocation specifies a PSCCH decoding unit of N symbols by M PRBs. The decoding unit is larger than a resource element group (REG) associated with the PSSCH resources. The method includes causing transmission, by a transceiver, of the PSCCH transmission in using the decoding unit specified by the resource allocation specification.

First claim

1 . A method for allocating channel resources for transmitting data by user equipment (UE), the method comprising:
receiving a resource allocation specification for a Physical Sidelink Control Channel (PSCCH) transmission on Physical Sidelink Shared Channel (PSSCH) resources, wherein the resource allocation specifies a PSCCH decoding unit of a first number of symbols by a second number physical resource blocks (PRBs), the decoding unit being larger than a resource element group (REG) associated with the PSSCH resources; and transmitting the PSCCH transmission based on the resource allocation specification.

2 .- 5 . (canceled)

6 . The method of claim 1 , wherein the resource specification specifies that the PSCCH decoding unit starts at a beginning of a slot of the PSSCH resources.

7 . The method of claim 1 , wherein a first symbol of the PSCCH is replicated on symbols 0 and 1 of the PSSCH resources.

8 . The method of claim 1 , wherein the transmission is configured for a New Radio (NR) Vehicle to Anything (V2X) Sidelink (SL) scenario.

9 . The method of claim 1 , further comprising configuring PSCCH aggregation levels across consecutive PSSCH sub-channels.

10 . The method of claim 1 , further comprising configuring PSCCH aggregation levels for allocation within a single PSSCH sub-channel, wherein the PSSCH sub-channel includes at least 20 PRBs.

11 . The method of claim 1 , wherein the resource allocation specification further specifies a plurality of PSCCH sub-channels, wherein each PSCCH sub-channel corresponds to a different number of PRBs from each other PSCCH sub-channel.

12 . The method of claim 1 , wherein the resource allocation specification further specifies a plurality of PSCCH sub-channels, wherein each PSCCH sub-channel corresponds to a complete coverage duration for sidelink PSCCH transmissions.

13 . The method of claim 1 , wherein the resource allocation specification specifies at least one transmission parameter value for a PSCCH demodulation reference signal (DMRS) rate matching pattern, and wherein the method comprises:
selecting the at least one transmission parameter value for the rate matching pattern from a resource pool configuration of a system.

14 . The method of claim 13 , wherein the at least one transmission parameter comprises a selection of an interference measurement resource.

15 . The method of claim 14 , wherein the selection of the interference measurement resource is randomized.

16 . The method of claim 13 , wherein the at least one parameter of the PSCCH DMRS rate matching pattern distinguishes the DMRS, wherein the method further comprises:
enabling a receiver of the transmission to resolve a collision on the PSCCH based on the at least one parameter that distinguishes the DMRS.

17 . The method of claim 13 , wherein the transmission parameter value comprises a DMRS symbol definition configured to orthogonalize the transmission with respect to other transmissions by other devices.

18 . The method of claim 17 , wherein the transmission parameter specifies at least one of an frequency direction orthogonal cover code (FD-OCC) configuration, a time direction orthogonal cover code (TD-OCC) configuration, a cyclic shift, a frequency division multiplexing (FDM) configuration, a time division multiplexing (TDM) configuration, or a combination of any thereof

19 . The method of claim 17 , wherein the DMRS symbol definition is initialized with a random transmission parameter value.

20 - 22 . (canceled)

23 . A user equipment (UE) device, comprising:
a transceiver;
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:

receiving a resource allocation specification for a Physical Sidelink Control Channel (PSCCH) transmission on Physical Sidelink Shared Channel (PSSCH) resources, wherein the resource allocation specifies a PSCCH decoding unit of a first number of symbols by a second number physical resource blocks (PRBs), the decoding unit being larger than a resource element group (REG) associated with the PSSCH resources; and
transmitting, by the transceiver, the PSCCH transmission based on the resource allocation specification.

24 . (canceled)

Assignees

• Apple Inc

Inventors

• Panteleev Sergey
• Khoryaev Alexey
• Shilov Mikhail
• Roth Kilian
• Baltar Leonardo Gomes

Classifications

• H04W72/541 Primary

  using the level of interference · CPC title

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title