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Data transmitting/receiving method in HARQ data communication system

A data and receiver technology, applied in the field of data sending equipment, can solve the problem of not being able to increase the amount of sending

Inactive Publication Date: 2003-01-29
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing methods have limitations in the implementation of composite data transmission and retransmission
Moreover, existing systems cannot increase the amount of transmission when retransmitting composite data through ARQ

Method used

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  • Data transmitting/receiving method in HARQ data communication system
  • Data transmitting/receiving method in HARQ data communication system
  • Data transmitting/receiving method in HARQ data communication system

Examples

Experimental program
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Embodiment Construction

[0026] Preferred embodiments of the invention will be described hereinafter with the aid of the drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

[0027] 1. Combination of block codes

[0028] Generally, a system using a retransmission scheme (such as HARQ) uses a block code combining scheme to increase transmission throughput. The sender sends a different code with coding rate R in each packet transmission. If an error is found in a received packet, the receiver requests a retransmission and performs soft combining between the original packet and the retransmitted packet. Retransmitted packets may have a different code than previous packets. The block code combination scheme is to combine the received N blocks with coding rate R into a code with effective coding rate R / N before decoding, thereby obtaining coding gain.

[0029] On the other hand, for the p...

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PUM

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Abstract

There is provided a data transmitting / receiving method in an HARQ data communication system. To transmit a physical layer information stream having a plurality of sub-blocks, each sub-block having an error correction code, a QoS (Quality of Service), and a priority if the sub-blocks has a different QoS, the encoded physical layer information stream is divided into a plurality of slots. The slot data are sequentially transmitted to a receiver in predetermined time intervals. If an HARQ (Hybrid Automatic Repeat Request) message for the initial slot data is received from the receiver, indicating that at least one of the sub-block in the initial slot data has a reception error and the other sub-blocks are good in reception, slot data with a sub-block having an error repeated within the number of the sub-blocks is retransmitted after transmission of initial slot data.

Description

technical field [0001] The present invention generally relates to a data transmission apparatus and method for a wireless communication system, and more particularly, to an apparatus and method for retransmitting data having errors during transmission. Background technique [0002] For forward packet data transmission, the mobile station is assigned a forward channel, eg a dedicated channel (DCH), from the base station. The wireless communication systems mentioned below include: satellite system, ISDN (Integrated Services Digital Network), digital cellular system, W-CDMA (Wideband Code Division Multiple Access), UMTS (Universal Mobile Telecommunications System) and IMT-2000 (2000 International System for Mobile Communications). Upon receipt of forward packet data, the mobile station determines whether the reception was successful, and if so, the mobile station sends the packet data to higher layers. On the other hand, if an error is detected from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/12H04J3/24H04L1/00H04L1/18
CPCH04L1/0066H04L1/1819H04L1/1887H04L1/1816H04L1/1845H04L1/1803H04L1/12
Inventor 金潣龟朴东植具昌会金大均
Owner SAMSUNG ELECTRONICS CO LTD
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