AUTOMATIC REVERSE CHANNEL ASSIGNMENT IN A TWO-WAY TDM COMMUNICATION SYSTEM

• US 20120087353A1
• Filed: 12/21/2011
• Published: 04/12/2012
• Est. Priority Date: 05/19/2000
• Status: Active Grant

• Current Assignee: IPR Licensing Incorporated (InterDigital, Inc.)
• Original Assignee: IPR Licensing Incorporated (InterDigital, Inc.)
• Inventors: Johnson, Kevin P.
• Granted Patent: US 8,427,954 B2
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• 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 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1263 Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and apparatus for communication is disclosed. Information is received on a downlink channel in a time interval. On a condition that an explicit allocation of a first uplink channel is received, feedback information regarding the received information is transmitted on the first uplink channel, wherein the feedback information is transmitted with user data on the first uplink channel. On a condition that an explicit allocation of the first uplink channel is not received, feedback information regarding the received information is transmitted in a time interval on a second uplink channel, wherein an explicit allocation of the second uplink channel is not received, wherein the time interval on the second uplink channel is a pre-determined time period away from the time interval on the downlink channel.

Claims

1. An apparatus comprising:

circuitry configured to receive information on a downlink channel in a time interval;

on a condition that an explicit allocation of a first uplink channel is received, circuitry configured to transmit feedback information regarding the received information on the first uplink channel, wherein the feedback information is transmitted with user data on the first uplink channel; and

on a condition that an explicit allocation of the first uplink channel is not received, circuitry configured to transmit feedback information regarding the received information in a time interval on a second uplink channel, wherein an explicit allocation of the second uplink channel is not received, wherein the time interval on the second uplink channel is a pre-determined time period away from the time interval on the downlink channel.

2. The apparatus of claim 1 wherein the information is received in multiple segments.

3. The apparatus of claim 1 wherein the feedback information is an acknowledgement message.

4. A method for communication comprising:

receiving information on a downlink channel in a time interval;

on a condition that an explicit allocation of a first uplink channel is received, transmitting feedback information regarding the received information on the first uplink channel, wherein the feedback information is transmitted with user data on the first uplink channel; and

on a condition that an explicit allocation of the first uplink channel is not received, transmitting feedback information regarding the received information in a time interval on a second uplink channel, wherein an explicit allocation of the second uplink channel is not received, wherein the time interval on the second uplink channel is a pre-determined time period away from the time interval on the downlink channel.

5. The method of claim 4 wherein the information is received in multiple segments.

6. The method of claim 4 wherein the feedback information is an acknowledgement message.