Reverse rate indicator detection

• US 20040141523A1
• Filed: 07/14/2003
• Published: 07/22/2004
• Est. Priority Date: 01/21/2003
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Bhushan, Naga, Ma, Jun, Fan, Mingxi
• Granted Patent: US 7,719,991 B2
• Time in Patent Office: Days
• US Class Current: 370/469
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 28/22 Negotiating communication rate

Abstract

Method and apparatus for Reverse Rate Indicator (RRI) detection. The receiver receives data rate and subpacket index information and applies the information to decoding the RRI. Processing traverses a path based on the last several entries.

Claims

1. A method for decoding a message transmitted in a wireless communication system supporting packet data transmission, wherein a packet is divided into a number of subpackets, the method comprising:

determining a set of hypotheses for decoding the message, wherein the set of hypotheses includes all combinations of available data rate and the number of subpackets;

using historical transmission information to reduce the set of hypotheses; and

decoding the message using each of the reduced set of hypotheses.