Scheduling request for beam failure recovery and buffer status reporting

Patent metadata

Field	Value
Publication number	US-12096442-B2
Application number	US-202318337184-A
Country	US
Kind code	B2
Filing date	Jun 19, 2023
Priority date	Mar 30, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A wireless device transmits a first scheduling request (SR) in response to initiating a beam failure recovery procedure. A second SR for a buffer status reporting procedure is transmitted. A downlink control information comprising an uplink grant is received via a downlink control channel while the first SR and the second SR are pending. Based on the reception of the downlink control information: the second SR for the buffer status reporting procedure is cancelled, and the first SR for the beam failure recovery procedure is kept pending.

First claim

What is claimed is:

1. A wireless device, comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
transmit a first scheduling request (SR) based on a buffer status reporting procedure;
transmit a second SR for a beam failure recovery, wherein the second SR is transmitted via an uplink control channel resource configured for the second SR;
receive, via a downlink control channel, first downlink control information; and
based on the first downlink control information:
keep the first SR pending; and
cancel the second SR for the beam failure recovery.

2. The wireless device of claim 1 , wherein the uplink control channel resource comprises at least one of:
a frequency radio resource;
an uplink control channel format;
a cyclic shift of a base sequence; and
a time radio resource.

3. The wireless device of claim 1 , wherein the first downlink control information comprises a downlink assignment or an uplink grant.

4. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to complete the beam failure recovery in response to cancelling the second SR.

5. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive one or more messages comprising at least one of:
first configuration parameters of a first plurality of SRs comprising the first SR; and
second configuration parameters of the second SR.

6. The wireless device of claim 1 , wherein the beam failure recovery is in response to a detection of a number of beam failure instances.

7. The wireless device of claim 6 , wherein the detection of the number of beam failure instances is in response to a channel quality of one or more reference signal resources being lower than one or more first thresholds.

8. The wireless device of claim 6 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to select, from a plurality of reference signals, a first reference signal based on one or more second thresholds, in response to the beam failure recovery.

9. The wireless device of claim 8 , wherein the second SR is indicative of at least one of:
the number of beam failure instances being detected; and the first reference signal being selected.

10. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to monitor the downlink control channel for the first downlink control information, and wherein the downlink control channel is monitored on:
at least one control resource set of the downlink control channel; and
at least one search space of the downlink control channel.

11. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to monitor the downlink control channel for the first downlink control information, wherein the downlink control channel is associated with the second SR, wherein at least one control resource set of the downlink control channel is determined based on the second SR, and wherein at least one search space of the downlink control channel is determined based on the second SR.

12. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to transmit the first SR via a second uplink control channel resource configured for the first SR, in response to keeping the first SR pending.

13. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
receive, via a second downlink control channel, second downlink control information comprising one or more uplink grants; and
cancel the first SR in response to the one or more uplink grants accommodating data available for uplink transmission.

14. A method comprising the following steps executed by a base station:
receiving a first scheduling request (SR) based on a buffer status reporting procedure;
receiving a second SR for a beam failure recovery;
transmitting, via a downlink control channel, first downlink control information; and
based on the first downlink control information:
keeping the first SR pending; and
cancelling the second SR for the beam failure recovery.

15. The method of claim 14 , further comprising completing the beam failure recovery in response to cancelling the second SR.

16. The method of claim 14 , further comprising transmitting one or more messages comprising at least one of:
first configuration parameters of a first plurality of SRs comprising the first SR; and
second configuration parameters of the second SR.

17. The method of claim 14 , wherein the beam failure recovery is initiated in response to detecting a number of beam failure instances.

18. The method of claim 14 , further comprising:
transmitting, via a second downlink control channel, second downlink control information comprising one or more uplink grants; and
cancelling the first SR in response to the one or more uplink grants accommodating data available for uplink transmission.

19. A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
receive a first scheduling request (SR) based on a buffer status reporting procedure;
receive a second SR for a beam failure recovery;
transmit, via a downlink control channel, first downlink control information; and
based on the first downlink control information:
keep the first SR pending; and
cancel the second SR for the beam failure recovery.

20. The base station of claim 19 , where the instructions, when executed by the one or more processors, further cause the base station to transmit one or more messages comprising at least one of:
first configuration parameters of a first plurality of SRs comprising the first SR; and
second configuration parameters of the second SR.

Assignees

• Resmed Inc

Inventors

• Zhou Hua
• Dinan Esmael Hejazi
• Cirik Ali
• Babaei Alireza
• Jeon Hyoungsuk
• Park Kyungmin

Classifications

• H04W74/0833

  Random access procedures, e.g. with 4-step access · CPC title

• H04W28/0278

  using buffer status reports (dynamic wireless traffic scheduling definition H04W72/12) · CPC title

• H04W24/08

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

• H04W72/232

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04B7/06964

  Re-selection of one or more beams after beam failure · CPC title