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Method and system for implementing H-ARQ assisted ARQ operation

A wireless communication system and receiver technology, applied in the field of automatic repeat request

Inactive Publication Date: 2009-01-21
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The H-ARQ transmitter will try to recover the failed packet

Method used

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  • Method and system for implementing H-ARQ assisted ARQ operation
  • Method and system for implementing H-ARQ assisted ARQ operation
  • Method and system for implementing H-ARQ assisted ARQ operation

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Embodiment

[0051] 1. A method for implementing ARQ assisted by H-ARQ in a wireless communication system, wherein the wireless communication system includes a transmitter and a receiver, the transmitter includes an H-ARQ transmitter and an ARQ transmitter, the Receivers include H-ARQ receivers and ARQ receivers.

[0052] 2. The method according to embodiment 1, comprising the following steps: the H-ARQ receiver determines whether an H-ARQ NACK-to-ACK error occurs.

[0053] 3. The method as described in embodiment 2, which includes the following steps: when H-ARQ NACK occurs to ACK errors, unless the number of retransmissions of the failed packet reaches the maximum retransmission limit, the maximum delivery time of the failed packet expires or the failed packet The time limit expires, otherwise the H-ARQ receiver sends an H-ARQ NACK to ACK error indicator to the H-ARQ transmitter.

[0054] 4. The method as in any one of embodiments 2-3, wherein the H-ARQ NACK-to-ACK error indicator is as...

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Abstract

A method and system for implementing hybrid automatic repeat request (H-ARQ)-assisted automatic repeat request (ARQ) in a wireless communication system are disclosed. When an H-ARQ negative acknowledgement (NACK)-to-positive acknowledgement (ACK) error occurs, the H-ARQ receiver sends an H-ARQ NACK-to-ACK error indicator to the H-ARQ transmitter unless a maximum retransmission limit has reached, a maximum time for delivery has expired or a lifespan of the failed packet has expired. The H-ARQ transmitter sends a local NACK to the ARQ transmitter so that the failed packet is recovered at an ARQ level. The H-ARQ receiver sends a local NACK to the ARQ receiver if the H-ARQ receiver does not receive the failed packet before certain conditions occur. The ARQ receiver may send a status report to the ARQ transmitter for recovery of the failed packet.

Description

technical field [0001] The present invention relates to wireless communication systems. In particular, the present invention relates to a method and system for implementing Hybrid Automatic Repeat Request (H-ARQ) assisted Automatic Repeat Request (ARQ) in a wireless communication system. Background technique [0002] In conventional wireless communication systems such as Wideband Code Division Multiple Access (WCDMA) Release 5 / 6, high-speed data transmission is via High-Speed ​​Downlink Packet Access (HSDPA) and High-Speed ​​Uplink Packet Access (HSUPA) technology achieved. In order to improve the reliability of data transmission, H-ARQ and ARQ are implemented in it. [0003] FIG. 1 shows a conventional wireless communication system 100 . System 100 includes User Equipment (UE) 110 , Node-B 120 and Radio Network Controller (RNC) 130 . The H-ARQ entity resides at the Medium Access Control (MAC) layer 112 of the UE 110 and at the MAC layer 122 of the Node-B 120 . Packets ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1812H04L1/1848H04L1/1874H04L2001/0092
Inventor 史蒂芬E·泰利亚蒂·钱德拉
Owner INTERDIGITAL TECH CORP
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