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Retransmission method and system

A technology of retransmission and retransmission protocol, which is applied in the field of retransmission and can solve the problem of not mentioning the MACPDU data indicator, etc.

Inactive Publication Date: 2014-11-26
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, none of the cited documents mention MAC PDU data indicator for soft combining control in Node B

Method used

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  • Retransmission method and system

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Embodiment Construction

[0056] figure 2 A preferred layered protocol structure, ie a protocol stack, according to the invention is shown. figure 1 The L2MAC layer has been extended and divided into two sublayers, a new L2MAC sublayer and a new MAC-ARQ sublayer. Essentially, the new L2MAC sublayer corresponds to figure 1 The prior art L2MAC sublayer. The MAC-ARQ plus MAC layer can be viewed as a single MAC layer that is extended to also include hybrid ARQ functionality. However, for purposes of explanation, they are preferably viewed as separate sub-layers. Also, on the network side, viewing them as separate protocol sublayers physically better corresponds to the physical entity in which they reside. as in figure 2 As shown in , on the UTRAN side (or network side), the L2MAC sublayer is preferably located in the RNC, while the L2MAC-ARQ sublayer is located in the Node B. Hybrid ARQ protocols combine retransmissions for consecutive receptions. There are great benefits to having a hybrid ARQ pr...

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Abstract

The invention relates to retransmission in a communication system, and discloses a method and system for reducing uplink retransmission delay of a radio communication system by introducing an uplink MAC ARQ (Media Access Control Automatic Repeat Request) layer of a node B. Moreover, the invention further introduces an MAC PDU (Media Access Control Protocol Data Unit) data indicator for soft composite control in the node B and RLC PDU (Radio Link Control Protocol Data Unit) rearrangement.

Description

[0001] The present application is a divisional application of the invention application with the application number 03826599.0 and the invention name "retransmission method and system" submitted by the applicant of the present invention on April 10, 2003. technical field [0002] The present invention relates to retransmissions in communication systems, and more particularly to a cellular mobile radio system, especially a Universal Mobile Telecommunications System UMTS or WCDMA system. Background technique [0003] Retransmission of data to or from a mobile station MS or user equipment UE is known previously. It is also known to use the Medium Access Control and Radio Link Control layers of the UMTS protocol structure in acknowledged mode for dedicated channels. [0004] In acknowledged mode, retransmissions are made in the event of detected transmission errors not recovered by forward error control. This is also known as Automatic Repeat Request ARQ. With ARQ, if a transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
Inventor J·托尔斯纳J·佩萨
Owner TELEFON AB LM ERICSSON (PUBL)