Reliability detection of channel quality indicator (CQI) and application to outer loop power control

Patent metadata

Field	Value
Publication number	US-9414314-B2
Application number	US-201313862735-A
Country	US
Kind code	B2
Filing date	Apr 15, 2013
Priority date	Dec 4, 2002
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A method for performing outer loop power control in wireless communications includes initializing a time interval clock to count down a predetermined time interval; receiving and decoding a channel quality indicator (CQI) message; computing a decision metric value for each symbol in the decoded CQI message; determining whether the CQI message is erroneous; counting a number of erroneous CQI messages; and signaling a wireless/transmit receive unit to adjust an uplink transmission power on a condition that the time interval clock has expired and the number of erroneous CQI messages exceeds a threshold.

First claim

What is claimed is:

1. A method comprising:
receiving, via a receiver, control channel transmissions;
counting, by the counter circuit, a number of erroneously received control channel transmissions during the time interval;
counting, by the counter circuit, a number of missed control channel transmissions during the time interval; and
reporting, via a transmitter and the counting circuit, the number of erroneously received control channel transmissions, and the number of missed control channel transmissions.

2. The method of claim 1 , wherein the time interval is a fixed time interval.

3. The method of claim 1 , wherein the steps of counting and reporting are done periodically.

4. The method of claim 1 , further comprising:
decoding, by a decoder circuit, the received control channel transmissions; and
computing, by a processor, a decision metric value for each symbol in the decoded control channel transmissions;
wherein whether a received control channel transmission is deemed erroneous is based on the decision metric values.

5. The method of claim 4 , wherein the control channel transmissions include channel quality index messages.

6. The method of claim 1 , wherein the control channel is a physical uplink control channel.

7. The method of claim 1 , wherein the control channel is a high speed dedicated control channel.

8. The method of claim 1 , wherein the method is performed by a base station and the control channel transmissions are received from a wireless transmit and receive unit.

9. An apparatus comprising:
a receiver, wherein the receiver receives control channel transmissions;
a counter circuit, wherein the counter circuit counts, during a time interval, a number of erroneously received control channel transmissions, and a number of missed control channel transmissions; and
a transmitter and the counter circuit report the number of erroneously received control channel transmissions, and the number of missed control channel transmissions.

10. The apparatus of claim 9 , wherein the time interval is a fixed time interval.

11. The apparatus of claim 9 , wherein the counter circuit counts and the transmitter and the counter circuit reports periodically.

12. The apparatus of claim 9 , further comprising:
a decoder circuit, wherein the decoder circuit decodes the received control channel transmissions; and
a processor, wherein the processor computes a decision metric value for each symbol in the decoded control channel transmissions;
wherein whether a received control channel transmission is deemed erroneous is based on the decision metric values.

13. The apparatus of claim 12 , wherein the control channel transmissions include channel quality index messages.

14. The apparatus of claim 9 , wherein the control channel is a physical uplink control channel.

15. The apparatus of claim 9 , wherein the control channel is a high speed dedicated control channel.

16. The apparatus of claim 9 , wherein the apparatus is a base station and the control channel transmissions are received from a wireless transmit and receive unit.

17. An apparatus comprising:
a receiver, wherein the receiver receives control channel transmissions;
a counter circuit, wherein the counter circuit counts a number of erroneously received control channel transmissions during the time interval;
another counter circuit, wherein the another counter circuit counts a number of missed control channel transmissions during the time interval; and
a transmitter, the counter circuit, and the another counter circuit report the values of said counter circuit, and said another counter circuit.

18. The apparatus of claim 17 , wherein the time interval is a fixed time interval.

19. The apparatus of claim 17 , wherein the counter and another counter circuits count and the transmitter, the counter circuit, and the another counter circuit reports periodically.

20. The apparatus of claim 17 , further comprising:
a decoder circuit, wherein the decoder circuit decodes the received control channel transmissions; and
a processor, wherein the processor computes a decision metric value for each symbol in the decoded control channel transmissions;
wherein whether a received control channel transmission is deemed erroneous or not is based on the decision metric values.

21. The apparatus of claim 20 , wherein the control channel transmissions include channel quality index messages.

22. The apparatus of claim 17 , wherein the control channel is a physical uplink control channel.

23. The apparatus of claim 17 , wherein the control channel is a high speed dedicated control channel.

24. The apparatus of claim 17 , wherein the apparatus is a base station and the control channel transmissions are received from a wireless transmit and receive unit.

Assignees

• Signal Trust For Wireless Innovation

Inventors

• Rudolf Marian
• Dick Stephen G
• Miller James M

Classifications

• H04L43/16

  Threshold monitoring · CPC title

• H04W28/24

  Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service] · CPC title

• H04W52/0225 Primary

  using monitoring of external events, e.g. the presence of a signal · CPC title

• H04W48/08

  Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) · CPC title

• H04L1/0026

  Transmission of channel quality indication · CPC title