Method and apparatus for sending and receiving channel quality indicators (CQIs)

Patent metadata

Field	Value
Publication number	US-10069614-B2
Application number	US-201615045133-A
Country	US
Kind code	B2
Filing date	Feb 16, 2016
Priority date	Oct 23, 2006
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A method and apparatus for sending and receiving channel quality indicators (CQIs) is disclosed. A CQI may be periodically sent or received. A CQI may also be sent or received upon request by a network.

First claim

What is claimed is:

1. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to monitor for downlink control information on a downlink control channel;
the processor configured to decode information in a transmission on the downlink control channel;
the processor configured to determine that a Node-B is requesting the WTRU to send a channel quality indicator (CQI) based on a triggering criteria associated with the transmission on the downlink control channel; and
the processor configured to send the CQI to the Node-B via a shared uplink channel.

2. The WTRU of claim 1 , wherein the information comprises an identifier of the WTRU, and wherein the identifier is a radio network temporary identifier (RNTI).

3. The WTRU of claim 1 , wherein the processor configured to periodically send CQIs via the shared uplink channel.

4. The WTRU of claim 3 , wherein the processor is configured to identify periodic intervals for the CQIs that are sent periodically.

5. The WTRU of claim 1 , wherein the processor is configured to send, to the Node-B, acknowledgements and negative acknowledgements via the shared uplink channel.

6. The WTRU of claim 1 , wherein the downlink control channel is a shared channel.

7. The WTRU of claim 1 , wherein the triggering criteria is one of a trigger or a poll.

8. The WTRU of claim 1 , wherein the processor is configured to select the CQI based on a target block error rate (BLER).

9. The WTRU of claim 1 , wherein the CQI is an index value.

10. The WTRU of claim 1 , wherein the CQI is a relative value to a previously sent CQI.

11. The WTRU of claim 1 , wherein the processor is configured to send the CQI at a physical layer.

12. A method performed by a wireless transmit/receive unit (WTRU), the method comprising:
monitoring for downlink control information on a downlink control channel;
decoding, by the WTRU, information in a transmission on the downlink control channel;
determining, by the WTRU, that a Node-B is requesting the WTRU to send a channel quality indicator (CQI) based on a triggering criteria associated with the transmission on the downlink control channel; and
sending, by the WTRU, the CQI to the Node-B via a shared uplink channel.

13. The method of claim 12 , wherein the information comprises an identifier of the WTRU, and wherein the identifier is a radio network temporary identifier (RNTI).

14. The method of claim 12 , further comprising periodically sending CQIs via the shared uplink channel.

15. The method of claim 14 , further comprising identifying periodic intervals for the CQIs that are sent periodically.

16. The method of claim 12 , further comprising sending, to the Node-B, acknowledgements and negative acknowledgements via the shared uplink channel.

17. The method of claim 12 , wherein the downlink control channel is a shared channel.

18. The method of claim 12 , wherein the triggering criteria is one of a trigger or a poll.

19. The method of claim 12 , further comprising selecting the CQI based on a target block error rate (BLER).

20. The method of claim 12 , wherein the CQI is an index value.

21. The method of claim 12 , wherein the CQI is a relative value to a previously sent CQI.

22. The method of claim 12 , further comprising sending the CQI at a physical layer.

Assignees

• Interdigital Tech Corp

Inventors

• Di Girolamo Rocco
• Cave Christopher R
• Marinier Paul
• Grandhi Sudheer A
• Roy Vincent

Classifications

• H04L25/0222

  Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency · CPC title

• H04L25/0212

  of impulse response · CPC title

• H04L1/0026 Primary

  Transmission of channel quality indication · CPC title

• H04L5/0057 Primary

  Physical resource allocation for CQI · CPC title

• H04L69/323

  in the physical layer [OSI layer 1] · CPC title