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Method and apparatus for gated ACK/NAK channel in communication system

A communication system and channel technology, applied in the field of communication, can solve problems such as conflicts, not knowing when data units are sent, ACK/NAK signal occupation, etc.

Inactive Publication Date: 2006-07-12
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because access terminals do not know very well when data units are sent to them, the channel in the direction from the access terminal to the access point, i.e. the reverse link direction, may be occupied by sent ACK / NAK signals, causing unnecessary collisions

Method used

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  • Method and apparatus for gated ACK/NAK channel in communication system
  • Method and apparatus for gated ACK/NAK channel in communication system
  • Method and apparatus for gated ACK/NAK channel in communication system

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Embodiment Construction

[0018] Novel and improved methods and apparatus for transmitting ACK / NAK information on an ACK / NAK channel are described herein. The exemplary embodiments described herein are presented in the context of digital cellular telephone systems. Although advantageous for use in this context, different embodiments of the invention may be combined in different environments or configurations. In general, the various systems described herein may be implemented using software-controlled processors, integrated circuits, or discrete logic. The data, instructions, commands, information, signals, symbols and chips mentioned throughout the application can preferably be generated using voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or a combination of the above express. Furthermore, the blocks shown in each block diagram may represent hardware or method steps.

[0019] figure 1 An exemplary communication system 100 in which ...

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Abstract

A method and apparatus are disclosed for transmitting ACK / NAK information in a communication system including a transmitter ( 74 ) for transmitting ACK / NAK information on an ACK / NAK channel, and a channel gate ( 699 ) for gating the ACK / NAK channel based on whether a matching preamble is detected in a received data unit by receiver ( 106 ). The data unit is a first data unit in a series of data units comprising a data packet. The channel gate ( 699 ) prevents transmission of the ACK / NAK channel when receiver ( 106 ) has failed to receive the matching preamble in the data unit.

Description

technical field [0001] The present invention relates to the field of communication. More particularly, the present invention relates to novel methods and apparatus for gating ACK / NAK channels in a communication system. Background technique [0002] The efficiency of the communication channel between two terminals can be improved by using error control coding. However, with the use of error control coding, some transmitted data packets are lost or received erroneously at the receiving terminal. A data packet can be allocated into a series of data units, each with a sequence number. The first data unit may carry a preamble indicating the receiving terminal, and the first data unit and subsequent data units carry payloads. [0003] When the receiving terminal detects a data unit whose sequence number is higher than the expected sequence number, the receiving terminal declares the data units whose sequence number is between the expected sequence number and the detected data u...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L1/18H04J3/00H04L1/12H04L1/16H04L29/08
CPCH04L1/1848H04L1/1809H04L1/1877H04L2001/125H04L1/1671H04L1/1854H04B7/26
Inventor P·E·本德
Owner QUALCOMM INC