Reverse link channel architecture for a wireless communication system

• US 20050135320A1
• Filed: 01/28/2005
• Published: 06/23/2005
• Est. Priority Date: 02/15/2001
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Tiedemann, Edward G. Jr., Chen, Tao, Jain, Avinash
• Granted Patent: US 8,098,581 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 1/1874 Buffer management
• CPC Class Codes: H04L 2001/125 Arrangements for preventing errors in the return channel
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/0473 the resource being transmission power

Abstract

A channel structure and mechanisms that support effective and efficient allocation and utilization of the reverse link resources. In one aspect, mechanisms are provided to quickly assign resources (e.g., a supplemental channel) as needed, and to quickly de-assign the resources when not needed or to maintain system stability. The reverse link resources may be quickly assigned and de-assigned via short messages exchanged on control channels on the forward and reverse links. In another aspect, mechanisms are provided to facilitate efficient and reliable data transmission. A reliable acknowledgment/negative acknowledgment scheme and an efficient retransmission scheme are provided. Mechanisms are also provided to control the transmit power and/or data rate of the remote terminals to achieve high performance and avoid instability.

Claims

1. A method for transmitting data on a reverse link of a wireless communication system, comprising:

transmitting a frame of data on the reverse link via a data channel;

temporarily retaining the data frame in a buffer;

monitoring for a message on a forward link indicating a received status of the transmitted data frame; and

processing the data frame based on the received message.

2. The method of claim 1, wherein the processing includes;

retransmitting the data frame if the message indicates that the transmitted data frame was incorrectly received.

3. The method of claim 1, wherein the processing includes;

discarding the data frame from the buffer if the message indicates that the transmitted data frame was correctly received.

4. The method of claim 1, wherein the processing includes;

retaining the data frame in the buffer if the message is not properly detected.

5. The method of claim 1, further comprising:

monitoring for a second transmission of the message;

wherein the processing of the data frame is based on one or more received messages for the data frame.

6. The method of claim 5, further comprising:

combining the received messages for the data frame to provide a more reliable message.

7. The method of claim 1, further comprising:

identifying the transmitted data frame with a sequence number.

8. The method of claim 7, further comprising:

transmitting the sequence number of the transmitted data frame via a signaling channel.

9. The method of claim 1, further comprising:

identifying the transmitted data frame as either a first transmission or a retransmission.

10. A method for transmitting data on a reverse link of a wireless communication system, comprising:

transmitting a frame of data on the reverse link via a data channel;

temporarily retaining the data frame in a buffer;

monitoring for a message on a forward link indicating a received status of the transmitted data frame;

retransmitting the data frame if the message indicates that the transmitted data frame was incorrectly received;

discarding the data frame from the buffer if the message indicates that the transmitted data frame was correctly received; and

retaining the data frame in the buffer if the message is not properly detected.