Uplink transmission in discovery reference signal measurement timing configuration window

Patent metadata

Field	Value
Publication number	US-2020112978-A1
Application number	US-201916588658-A
Country	US
Kind code	A1
Filing date	Sep 30, 2019
Priority date	Oct 5, 2018
Publication date	Apr 9, 2020
Grant date	—

Abstract

Wireless communications systems and methods related to transmission of discovery signals are provided. A wireless communication device communicates an indication of an uplink (UL) resource that falls within a discovery reference signal (DRS) measurement timing configuration (DMTC) window. The wireless communication device communicates an UL transmission within the UL resource during the DMTC window.

First claim

What is claimed is:

1 . A method of wireless communication, comprising:
communicating, by a first wireless communication device with a second wireless communication device, an indication of an uplink (UL) resource that falls within a discovery reference signal (DRS) measurement timing configuration (DMTC) window; and communicating, by the first wireless communication device with the second wireless communication device, an UL transmission within the UL resource during the DMTC window.

2 . The method of claim 1 , wherein communicating the indication of the UL resource includes scheduling an UL grant for the UL transmission.

3 . The method of claim 1 , wherein communicating the indication of the UL resource includes communicating a configured grant for the UL transmission.

4 . The method of claim 1 , comprising:
determining, by the first wireless communication device, whether the UL resource overlaps with a synchronization signal block (SSB) occasion within the DMTC window, wherein communicating the UL transmission includes communicating the UL transmission in response to a determination of no overlap with the SSB occasion.

5 . The method of claim 1 , comprising:
determining, by the first wireless communication device, whether the UL resource overlaps with an SSB occasion within the DMTC window; and in response to a determination of an overlap with the SSB occasion, determining, by the first wireless communication device, a validity state of the UL resource based on an arrangement of the UL resource, wherein communicating the UL transmission includes communicating the UL transmission in response to determination of the validity state as valid.

6 . The method of claim 5 , comprising:
withholding transmission, by the first wireless communication device, of the UL transmission in response to determination of the validity state of the UL resource as invalid.

7 . The method of claim 5 , wherein the determining whether the UL resource overlaps with an SSB occasion within the DMTC window includes one of:
determining the overlap in response to the UL resource overlapping the DMTC window, wherein the DMTC window includes at least one slot of a plurality of slots having the SSB occasion; determining the overlap in response to the UL resource overlapping within a first predetermined number of symbols of a slot of the DMTC window having the SSB occasion; determining the overlap in response to the UL resource overlapping any symbol within a slot of the DMTC window prior to a last symbol allocated for the SSB occasion within the slot; or determining the overlap in response to the UL resource overlapping a symbol allocated for the SSB occasion within the slot of the DMTC window having the SSB occasion.

8 . The method of claim 5 , comprising:
determining, by the first wireless communication device, that the validity state of the UL resource is invalid in response to one or more of:
failure of a first gap between the DMTC window and the UL resource to meet a first predetermined length;
failure of a second gap between the UL resource and a subsequent DMTC window to meet a second predetermined length;
failure of a third gap between a previous SSB occasion and the UL resource to meet a third predetermined length; or
failure of a fourth gap between the UL resource and a subsequent SSB occasion to meet a fourth predetermined length.

9 . The method of claim 5 , comprising:
failing, by the first wireless communication device, to detect a channel occupancy time (COT) from a beginning of the DMTC window, wherein determining the validity state includes one of:
determining the validity state as invalid in response to a determination that the UL resource overlaps with the SSB occasion;
determining the validity state as valid in response to the UL resource having been dynamically triggered via a physical control channel;
determining the validity state as valid in response to the UL resource having been triggered as UE-specific UL resources; or
determining the validity state as invalid in response to the UL resource having been triggered via remaining minimum system information (RMSI).

10 . The method of claim 1 , comprising:
sensing a shared communication channel for occupying signals during a predetermined duration of the DMTC window; and determining a validity state of the UL resource as valid in response to the shared communication channel detected as idle for the predetermined duration.

11 . The method of claim 10 , comprising:
determining the validity state of the UL resource as invalid in response to the UL resource occurring within a threshold duration from a beginning of the DMTC window.

12 . The method of claim 10 , comprising:
identifying, by the first wireless communication device, one or more fixed SS burst start points within the DMTC window, wherein the sensing begins at each of the one or more fixed SS burst start points, and wherein the validity state of the UL resource as valid ends at a next fixed SS burst start point of the one or more fixed SS burst start points.

13 . The method of claim 1 , wherein the UL transmission associated with the UL resource determined to overlap with the SSB occasion includes one of: a high priority transmission or a transmission of a predetermined physical channel type.

14 . An apparatus comprising:
a transceiver configured to:
communicate, by a first wireless communication device with a second wireless communication device, an indication of an uplink (UL) resource that falls within a discovery reference signal (DRS) measurement timing configuration (DMTC) window; and
communicate, by the first wireless communication device with the second wireless communication device, an UL transmission within the UL resource during the DMTC window.

15 . The apparatus of claim 14 , wherein the UL transmission is at least one of a random access channel (RACH) transmission, a configured grant transmission, or a scheduled grant transmission.

16 . The apparatus of claim 14 , wherein the transmitter communicates the indication of the UL resource by scheduling an UL grant for the UL transmission.

17 . The apparatus of claim 14 , wherein the transmitter communicates the indication of the UL resource by communicating a configured grant for the UL transmission.

18 . The apparatus of claim 14 , comprising:
a processor configured to determine, by the first wireless communication device, whether the UL resource overlaps with a synchronization signal block (SSB) occasion within the DMTC window, wherein the transceiver communicates the UL transmission in response to a determination of no overlap with the SSB occasion.

19 . The apparatus of claim 14 , comprising:
a processor configured to:
determine, by the first wireless communication device, whether the UL resource overlaps with an SSB occasion within the DMTC window; and
determine, by the first wireless communication device, a validity state of the UL resource based on an arrangement of the UL resource in response to a determination of an overlap with the SSB occasion,
wherein the transceiver communicates the UL transmission in response to determination of the validity state as valid.

20 . The apparatus of claim 19 , wherein the transceiver withholds transmission of the UL transmission in response to determination of the validity state of the UL resource as invalid.

21 . The apparatus of claim 19 , wherein the processor is configured to determine that the UL reso

Assignees

• Qualcomm Inc

Inventors

• Zhang Xiaoxia
• Sun Jing
• Bhattad Kapil
• Luo Tao
• Deogun Pravjyot Singh
• Thyagarajan Ananta Narayanan

Classifications

• H04W16/14

  Spectrum sharing arrangements {between different networks} · CPC title

• H04W24/08

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

• H04W74/0808

  using carrier sensing, e.g. carrier sense multiple access [CSMA] · CPC title

• H04W72/1268 Primary

  of uplink data flows · CPC title

• H04L5/005 Primary

  of common pilots, i.e. pilots destined for multiple users or terminals · CPC title