Channel state measurement and reporting

Patent metadata

Field	Value
Publication number	US-10735985-B2
Application number	US-201614994083-A
Country	US
Kind code	B2
Filing date	Jan 12, 2016
Priority date	May 9, 2013
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

A method for reporting uplink control information (UCI) on a user equipment (UE) is described. A second channel state information (CSI) report is transmitted. The second CSI report is computed from interference measurements only on a subframe of the CSI reference resource. A first CSI report is computed from interference measurements based on an unrestricted observation interval in time and frequency. The CSI reference resource for the second CSI report reported in uplink subframe n is defined by a valid downlink subframe n−k.

First claim

What is claimed is:

1. A method for receiving uplink control information (UCI), comprising:
receiving a second Channel State Information (CSI) report from a user equipment (UE),
the second CSI report being computed from interference measurements that are derived only on a single subframe within a configured CSI-interference measurement (CSI-IM) resource, the single subframe being determined based on a CSI reference resource and the configured CSI-IM resource,
a first CSI report being computed from interference measurements based on an observation interval which is unrestricted in time and frequency,
the CSI reference resource referred to for the second CSI report reported in an uplink subframe being defined by a valid downlink subframe which precedes the uplink subframe by a specific number of subframes.

2. The method of claim 1 , wherein the second CSI report is a periodic CSI report.

3. The method of claim 1 , wherein the second CSI report is configured in a CSI process configuration.

4. The method of claim 1 , wherein the second CSI report is an aperiodic CSI report.

5. The method of claim 1 , wherein the second CSI report corresponds to a configured CSI process.

6. A method for reporting uplink control information (UCI), comprising:
computing a first Channel State Information (CSI) report from interference measurements based on an observation interval which is unrestricted in time and frequency;
computing a second CSI report from interference measurements that are derived only on a single subframe within a configured CSI-interference measurement (CSI-IM) resource, the single subframe being determined based on a CSI reference resource and the configured CSI-IM resource; and
transmitting the second CSI report,
the CSI reference resource referred to for the second CSI report reported in an uplink subframe being defined by a valid downlink subframe which precedes the uplink subframe by a specific number of subframes.

7. The method of claim 6 , wherein the second CSI report is a periodic CSI report.

8. The method of claim 6 , wherein the second CSI report is configured in a CSI process configuration.

9. The method of claim 6 , wherein the second CSI report is an aperiodic CSI report.

10. The method of claim 6 , wherein the second CSI report corresponds to a configured CSI process.

11. A base station configured for receiving uplink control information (UCI), comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, the instructions being executable to:
receive a second Channel State Information (CSI) report from a user equipment (UE),
the second CSI report being computed from interference measurements that are derived only on a single subframe within a configured CSI-interference measurement (CSI-IM) resource, the single subframe being determined based on a CSI reference resource and the configured CSI-IM resource,
a first CSI report being computed from interference measurements based on an observation interval which is unrestricted in time and frequency,
the CSI reference resource referred to for the second CSI report reported in an uplink subframe being defined by a valid downlink subframe which precedes the uplink subframe by a specific number of subframes.

12. The base station of claim 11 , wherein the second CSI report is a periodic CSI report.

13. The base station of claim 11 , wherein the second CSI report is configured in a CSI process configuration.

14. The base station of claim 11 , wherein the second CSI report is an aperiodic CSI report.

15. The base station of claim 11 , wherein the second CSI report corresponds to a configured CSI process.

16. A user equipment (UE) configured for reporting uplink control information (UCI), comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, the instructions being executable to:
compute a first Channel State Information (CSI) report from interference measurements based on an observation interval which is unrestricted in time and frequency;
compute a second CSI report from interference measurements that are derived only on a single subframe within a configured CSI-interference measurement (CSI-IM) resource, the single subframe being determined based on a CSI reference resource and the configured CSI-IM resource; and
transmit the second CSI report,
the CSI reference resource referred to for the second CSI report reported in an uplink subframe being defined by a valid downlink subframe which precedes the uplink subframe by a specific number of subframes.

17. The UE of claim 16 , wherein the second CSI report is a periodic CSI report.

18. The UE of claim 16 , wherein the second CSI report is configured in a CSI process configuration.

19. The UE of claim 16 , wherein the second CSI report is an aperiodic CSI report.

20. The UE of claim 16 , wherein the second CSI report corresponds to a configured CSI process.

Assignees

• Sharp Laboratories America Inc
• Sharp Kk

Inventors

• Khoshnevis Ahmad
• Yamada Shohei
• Yin Zhanping

Classifications

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04W72/21

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

• H04L1/00

  Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)} · CPC title

• H04L5/0057

  Physical resource allocation for CQI · CPC title

• H04W24/08

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