Method and apparatus for channel access

Patent metadata

Field	Value
Publication number	US-2024215064-A1
Application number	US-202017914115-A
Country	US
Kind code	A1
Filing date	Mar 27, 2020
Priority date	Mar 27, 2020
Publication date	Jun 27, 2024
Grant date	—

Abstract

Embodiments of the present application are directed to a method and apparatus for channel access. A method according to an embodiment of the present application may include: receiving control information associated with a channel occupancy (CO) initiated by a base station, determining whether the CO can be shared for a physical uplink shared channel (PUSCH) transmission and an uplink transmission beam associated with the CO in the case of being shared based on the control information, and transmitting the PUSCH transmission with the determined uplink transmission beam in the case that the CO can be shared.

First claim

1 . A method, comprising:
receiving control information associated with a channel occupancy (CO) initiated by a base station; determining whether the CO can be shared for a physical uplink shared channel (PUSCH) transmission and an uplink transmission beam associated with the CO if the CO is shareable based on the control information; and transmitting the PUSCH transmission with the determined uplink transmission beam if the CO can be shared.

2 . The method of claim 1 , further comprising transmitting the PUSCH transmission based on additional control information for the PUSCH transmission different from the control information associated with the CO if the CO cannot be shared.

3 . The method of claim 1 , wherein the control information is received in a group common-physical downlink control channel (GC-PDCCH) or a medium access control-control element (MAC-CE).

4 . The method of claim 1 , wherein the control information includes first control information indicating whether the CO can be shared, and if the first control information indicates the CO can be shared, the control information further includes second control information indicating the uplink transmission beam associated with the CO.

5 . (canceled)

6 . The method of claim 4 , wherein the first control information is received in a group common-physical downlink control channel (GC-PDCCH), and the second control information is received by high-layer signaling.

7 - 8 . (canceled)

9 . The method of claim 1 , wherein the uplink transmission beam has a one-to-one correspondence with a sounding reference signal (SRS) resource index.

10 . The method of claim 1 , wherein transmitting the PUSCH transmission with the determined uplink transmission beam if the CO can be shared comprises switching from a first channel access procedure to a second channel access procedure different from the first channel access procedure.

11 - 19 . (canceled)

20 . An apparatus, comprising:
a receiver; a transmitter; and a processor coupled to the transmitter configured to:
receive control information associated with a channel occupancy (CO) initiated by a base station;
determine whether the CO can be shared for a physical uplink shared channel (PUSCH) transmission and an uplink transmission beam associated with the CO if the CO is shareable based on the control information; and
transmitting the PUSCH transmission with the determined uplink transmission beam if the CO can be shared.

21 . An apparatus, comprising:
a receiver; a transmitter; and a processor coupled to the receiver and the transmitter configured to:
transmit control information associated with a channel occupancy (CO), the control information indicates whether the CO can be shared for a physical uplink shared channel (PUSCH) transmission and an uplink transmission beam associated with the CO if the CO is shareable; and
receive the PUSCH transmission with a reception beam corresponding to the uplink transmission beam associated with the CO if the CO can be shared.

22 . The apparatus of claim 21 , wherein the PUSCH transmission is received based on additional control information for the PUSCH transmission different from the control information associated with the CO if the CO cannot be shared.

23 . The apparatus of claim 21 , wherein the control information is transmitted in a group common-physical downlink control channel (GC-PDCCH) or a medium access control-control element (MAC-CE).

24 . The apparatus of claim 21 , wherein the control information includes first control information indicating whether the CO can be shared, and if the first control information indicates the CO can be shared, the control information further includes second control information indicating the uplink transmission beam associated with the CO.

25 . The apparatus of claim 24 , wherein the first control information is transmitted in a group common-physical downlink control channel (GC-PDCCH), and the second control information is transmitted by high-layer signaling.

26 . The apparatus of claim 21 , wherein the uplink transmission beam has a one-to-one correspondence with a sounding reference signal (SRS) resource index.

27 . The apparatus of claim 20 , wherein the processor coupled to the receiver and the transmitter are configured to transmit the PUSCH transmission based on additional control information for the PUSCH transmission different from the control information associated with the CO if the CO cannot be shared.

28 . The apparatus of claim 20 , wherein the control information is received in a group common-physical downlink control channel (GC-PDCCH) or a medium access control-control element (MAC-CE).

29 . The apparatus of claim 20 , wherein the control information includes first control information indicating whether the CO can be shared, and if the first control information indicates the CO can be shared, the control information further includes second control information indicating the uplink transmission beam associated with the CO.

30 . The apparatus of claim 29 , wherein the first control information is received in a group common-physical downlink control channel (GC-PDCCH), and the second control information is received by high-layer signaling.

31 . The apparatus of claim 20 , wherein the uplink transmission beam has a one-to-one correspondence with a sounding reference signal (SRS) resource index.

32 . The apparatus of claim 20 , wherein the PUSCH transmission transmitted with the determined uplink transmission beam if the CO can be shared comprises the processor coupled to the receiver and the transmitter configured to switch from a first channel access procedure to a second channel access procedure different from the first channel access procedure.

Assignees

• Lenovo Beijing Ltd

Inventors

• Zhang Yu
• Lei Haipeng
• Golitschek Edler Von Elbwart Alexander

Classifications

• H04B7/06966

  using beam correspondence; using channel reciprocity, e.g. downlink beam training based on uplink sounding reference signal [SRS] · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L5/005

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

• H04W72/02

  Selection of wireless resources by user or terminal · CPC title

• H04W74/006 Primary

  in the downlink, i.e. towards the terminal · CPC title