Common control channel uplink power control for adaptive modulation and coding techniques

• US 6,745,045 B2
• Filed: 04/17/2002
• Issued: 06/01/2004
• Est. Priority Date: 05/14/2001
• Status: Expired due to Term

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Zeira, Eldad, Dick, Stephen G., Terry, Stephen E., Miller, James M., Zeira, Ariela
• Primary Examiner(s): Vuong, Quochien B.
• Application Number:
  US10/124,030
• Publication Number:
  US 20020168996A1
• Time in Patent Office: 776 Days
• Field of Search: 455/69, 455/522, 455/67.13, 455/561, 455/63.1, 370/342
• US Class Current: 455/522
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/228 using past power values or information
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/246 where the output power of a terminal is based on a path parameter calculated in said terminal
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention is a base station which receives a communication signal over an uplink common control channel and measures interference on the uplink common control channel in response to the received signal. A channel quality measuring device included in the base station monitors the channel quality of the uplink common control channel and provides a quality margin for the communication signal. A spreading device, then, transmits the quality margin over a downlink control channel in response to the quality margin.

Claims

1. A base station comprising:

a receiver for receiving a communication signal over an uplink common control channel;

an interference measurement device for measuring interference on the uplink common control channel;

a channel quality measuring device for measuring the channel quality of the uplink common control channel and for providing a quality margin for said communication signal; and

a spreading device for transmitting said measured interference and said quality margin over a downlink control channel.

2. The base station of claim 1 further comprising:

a summing device for combining said measured interference and said quality margin, whereby said combined measured interference and said quality margin is forwarded to said spreading device.

3. The base station of claim 2 wherein said measured interference and said quality margin are encoded into a single parameter.

4. The base station of claim 1 wherein said measured interference is transmitted over a broadcast channel.

5. The base station of claim 1 wherein said quality margin includes a signal to interference ratio target.

6. A base station comprising:

a means for receiving a communication signal over an uplink common control channel;

a means for measuring interference on the uplink common control channel;

a means for monitoring the channel quality of the uplink common control channel and providing a quality margin for said communication signal; and

a means for transmitting said measured interference and said quality margin over a downlink control channel.

7. The base station of claim 6 further comprising:

a means for combining said measured interference and said quality margin;

whereby said combination is forwarded to said means for transmitting.

8. The base station of claim 7 wherein said measured interference and said quality margin are encoded into a single parameter.

9. The base station of claim 6 wherein said measured interference is transmitted over a broadcast channel.

10. The base station of claim 6 wherein said quality margin includes a signal to interference ratio target.