EP1556981A2

5G,4G,3G

Title

Closed-loop rate control for a multi-channel communication system

Application Number:

EP20030781561

Publication Date:

27-07-2005

Current Assignee:

QUALCOMM INC

Family ID:

32179857

Application Date:

24-10-2003

Publication Country:

US

View on Espacenet

Priority Date:

25-10-2002

Declaring Company:

QUALCOMM INC

Abstract  Abstract

Closed-loop rate control for data transmission on multiple parallel channels is provided. An inner loop estimates the channel conditions for a communication link and selects a suitable data rate for each of the multiple parallel channels based on the channel estimates. For each parallel channel a received SNR is computed based on the channel estimates an operating SNR is computed based on the received SNR and an SNR offset for the parallel channel and the data rate is selected based on the operating SNR for the parallel channel and a set of required SNRs for a set of data rates supported by the system. An outer loop estimates the quality of data transmissions received on the multiple parallel channels and adjusts the operation of the inner loop. For example the SNR offset for each parallel channel is adjusted based on the status of packets received on that parallel channel.

Closed-loop rate control for data transmission on multiple parallel channels is provided. An inner loop estimates the channel conditions for a communication link and selects a suitable data rate for each of the multiple parallel channels based on the channel estimates. For each parallel channel a received SNR is computed based on the channel estimates an operating SNR is computed based on the received SNR and an SNR offset for the parallel channel and the data rate is selected based on the operating SNR for the parallel channel and a set of required SNRs for a set of data rates supported by the system. An outer loop estimates the quality of data transmissions received on the multiple parallel channels and adjusts the operation of the inner loop. For example the SNR offset for each parallel channel is adjusted based on the status of packets received on that parallel channel.

Note:

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