Method and apparatus for channel quality feedback in a wireless communication
First Claim
Patent Images
1. A remote station apparatus comprising:
- a quality measurement unit for iteratively measuring link quality of a communication link;
a quality message processing unit for generating a quality message based on the measured link quality and for generating a parity check corresponding to the quality message; and
a differential analyzer for determining changes in the measured link quality.
1 Assignment
0 Petitions
Accused Products
Abstract
Method and apparatus for providing link quality feedback to a transmitter. In one embodiment, a periodic link quality message is transmitted on a gated channel, while continuous differential indicators are transmitted. Between quality messages, the differential indicators track the quality of the link. In one embodiment, a parity check is provided with the quality message. In another embodiment, the frequency of transmission for the quality messages is determined by the channel quality. When the receiver anticipates reception of a transmission, the quality messages are generated; else the quality messages are halted.
186 Citations
19 Claims
-
1. A remote station apparatus comprising:
-
a quality measurement unit for iteratively measuring link quality of a communication link;
a quality message processing unit for generating a quality message based on the measured link quality and for generating a parity check corresponding to the quality message; and
a differential analyzer for determining changes in the measured link quality. - View Dependent Claims (2, 3)
-
-
4. In a wireless communication system, a method comprising:
-
generating quality messages at a first frequency, the quality messages providing information on the quality of a communication link; and
generating a parity check for each of the quality messages. - View Dependent Claims (7)
-
-
5. The method of claim 5, further comprising:
generating differential indicators at a second frequency, the differential indicators indicating changes in the quality of the communication link, wherein the second frequency is greater than the first frequency. - View Dependent Claims (6)
-
8. In a wireless communication system, a method comprising:
-
estimating a channel condition over a first time window;
comparing the estimated channel condition to a first threshold value;
determining a transmission rate for transmission of quality messages based on the comparison; and
transmitting quality messages at the transmission rate. - View Dependent Claims (9, 10)
-
-
11. A wireless apparatus, comprising:
-
means for estimating a channel condition over a first time window;
means for comparing the estimated channel condition to a first threshold value;
means for determining a transmission rate for transmission of quality messages based on the comparison; and
means for transmitting quality messages at the transmission rate.
-
-
12. In a wireless communication system for processing voice communications and packet-switched communications, a base station comprising:
-
receive circuitry operative to receive signals on a reverse link, including a quality message with a parity check, and differential indicators, the quality message periodically providing a quality metric of a forward link, wherein the differential indicators track the quality metric between successive quality messages;
a memory storage unit operative to store a quality message received on the reverse link; and
a differential analyzer to update the quality message stored in the memory storage unit in response to the differential indicators and the parity check.
-
-
13. A wireless apparatus, comprising:
-
processing unit, operative for executing computer-readable instructions; and
a memory storage unit adapted to store a plurality of computer-readable instructions for;
generating quality messages at a first frequency, the quality messages providing information on the quality of a communication link; and
generating a parity check for each of the quality messages. - View Dependent Claims (14)
-
-
15. A wireless apparatus, comprising:
-
processing unit, operative for executing computer-readable instructions; and
a memory storage unit adapted to store a plurality of computer-readable instructions for;
estimating a channel condition over a first time window;
comparing the estimated channel condition to a first threshold value;
determining a transmission rate for transmission of quality messages based on the comparison; and
transmitting quality messages at the transmission rate.
-
-
16. In a wireless communication system, the wireless communication system supporting a plurality of carriers, a method comprising:
-
determining an average channel condition among the plurality of carriers;
comparing the average channel condition to a first threshold value;
determining a transmission rate for transmission of quality messages based on the comparison; and
transmitting quality messages at the transmission rate. - View Dependent Claims (17)
-
-
18. A wireless apparatus, comprising:
-
processing unit, operative for executing computer-readable instructions; and
a memory storage unit adapted to store a plurality of computer-readable instructions for;
determining a best channel condition associated with a first frequency; and
generating a quality message, the quality message including a quality indicator and a frequency indicator, the frequency indicator identifying the first frequency. - View Dependent Claims (19)
-
Specification