Feedback prioritization for wireless communications

Patent metadata

Field	Value
Publication number	US-2021307025-A1
Application number	US-201917263109-A
Country	US
Kind code	A1
Filing date	Aug 8, 2019
Priority date	Aug 9, 2018
Publication date	Sep 30, 2021
Grant date	—

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a set of channel state processes scheduled to be performed. The UE may receive a channel state feedback request corresponding to another set of channel state processes. The combination of the set of channel state processes and the other set of channel state processes may be greater than an amount that the UE may process at a given time. The UE may determine a priority for the channel state processes either on an individual or group basis. The UE may determine channel state process (es) to drop based on the determined priorities, and may perform the remaining channel state processes. The UE may generate and transmit a channel state feedback report message based on the performed channel state processes.

First claim

What is claimed is:

1 . A method for wireless communication at a user equipment (UE), comprising:
identifying a set of channel state information processes scheduled to be reported by the UE; receiving a request that the UE is to perform reporting for an additional channel state information process; determining a priority of each of the set of channel state information processes and the additional channel state information process; updating channel state information for a subset of channel state information processes based at least in part on a capability of the UE and the priority of each of the set of channel state information processes and the additional channel state information process; and transmitting updated channel state information feedback corresponding to the subset of channel state information processes.

2 . The method of claim 1 , wherein transmitting updated channel state information feedback comprises:
transmitting channel state information feedback corresponding to the set of channel state information processes and the additional channel state information process, wherein the channel state information feedback comprises updated channel state information feedback for the subset of channel state information processes.

3 . The method of claim 2 , wherein the channel state information feedback comprises stale information for at least one channel state information process.

4 . The method of claim 2 , wherein the channel state information feedback excludes information for at least one channel state information process.

5 . The method of claim 1 , further comprising:
identifying a number of channel state information processing units of the UE capable of performing a channel state information process; determining whether the set of channel state information processes and the additional channel state information process exceeds the number of channel state information processing units of the UE; and updating channel state information for the subset of channel state information processes based at least in part on determining whether the set of channel state information processes and the additional channel state information process exceeds the number of channel state information processing units of the UE.

6 . The method of claim 1 , further comprising:
dropping at least one channel state information process of the set of channel state information processes based at least in part on the at least one channel state information process having a lower priority than the additional channel state information process.

7 . The method of claim 6 , wherein the subset of channel state information processes includes the additional channel state information process and excludes the at least one channel state information process.

8 . The method of claim 6 , wherein dropping the at least one channel state information process comprises:
refraining from transmitting feedback for the at least one channel state information process.

9 . The method of claim 6 , wherein dropping the at least one channel state information process comprises:
refraining from updating channel state information for the at least one channel state information process.

10 . The method of claim 9 , wherein refraining from updating channel state information comprises:
ceasing an ongoing computation of channel state information for the at least one channel state information process.

11 . The method of claim 1 , further comprising:
dropping the additional channel state information process based at least in part on the additional channel state information process having a lower priority than each channel state information process of the set of channel state information processes.

12 . The method of claim 11 , wherein the subset of channel state information processes includes each channel state information process of the set of channel state information processes and excludes the additional channel state information process.

13 . The method of claim 1 , further comprising:
receiving an indication of priority for each of the set of channel state information processes or the additional channel state information process; and determining the priority of each of the set of channel state information processes and the additional channel state information process based at least in part on the indication of priority.

14 . The method of claim 13 , wherein the indication of priority for at least one channel state information process of the set of channel state information processes comprises a downlink control information (DCI) field associated with the at least one channel state information process, a search space associated with the at least one channel state information process, a control resource set associated with the at least one channel state information process, a bandwidth part associated with the at least one channel state information process, a radio network temporary identifier (RNTI) masking parameter associated with the at least one channel state information process, a scrambling sequence for a physical downlink control channel (PDCCH) associated with the at least one channel state information process, a transmission reception point identifier associated with the at least one channel state information process, a block error rate (BLER) associated with the at least one channel state information process, or any combination thereof.

15 . The method of claim 13 , wherein the indication of priority for the additional channel state information process comprises a downlink control information (DCI) field associated with the additional channel state information process, a search space associated with the additional channel state information process, a control resource set associated with the additional channel state information process, a bandwidth part associated with the additional channel state information process, a radio network temporary identifier (RNTI) masking parameter associated with the additional channel state information process, a scrambling sequence for a physical downlink control channel (PDCCH) associated with the additional channel state information process, a transmission reception point identifier associated with the additional channel state information process, a block error rate (BLER) associated with the additional channel state information process, or any combination thereof.

16 . The method of claim 1 , further comprising:
determining a service type, a cell index, a channel state information feedback type, a channel state information content type, a transmission reception point identifier (ID), or a channel state information ID associated with at least one channel state information process of the set of channel state information processes or the additional channel state information process; and determining the priority of each of the set of channel state information processes and the additional channel state information process based at least in part on at least one of the determined service type, cell index, channel state information feedback type, channel state information content type, transmission reception point ID, channel state information identifier ID, or any combination thereof.

17 . The method of claim 1 , further comprising:
identifying an expiration time period for reception of the request; determining that the request is received after the identified expiration time period; and dropping the additional channel state information process based at least in part on that the request is received after the identified expiration time period.

Assignees

• Hosseini Seyedkianoush
• Huang Yi
• Zhang Yu
• Chen Wanshi
• Qualcomm Inc

Inventors

• Hosseini Seyedkianoush
• Huang Yi
• Zhang Yu
• Chen Wanshi

Classifications

• H04W72/569

  of the traffic information · CPC title

• H04W72/23

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

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/542

  using measured or perceived quality · CPC title

• H04W72/54 Primary

  based on quality criteria · CPC title