Method and apparatus for sending/receiving of block resending in mobile communication system

A mobile communication system, retransmission technology, applied in the direction of error prevention/detection through transmission repetition, transmission system, wireless communication, etc., can solve problems such as damage to decoding performance

Inactive Publication Date: 2003-06-11
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, sending individual bits with a high probability of error will hurt decoding performance

Method used

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  • Method and apparatus for sending/receiving of block resending in mobile communication system
  • Method and apparatus for sending/receiving of block resending in mobile communication system
  • Method and apparatus for sending/receiving of block resending in mobile communication system

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Embodiment Construction

[0041] The preferred embodiment of the present invention will be described below with reference to the accompanying drawings which are incorporated herein. In the following description, well-known functions and constructions are not described in detail since they would obscure the invention in unnecessary detail.

[0042] H-ARQ applied in the present invention is a link control technique for correcting packet errors by retransmission. As obvious from the name, a resend is a resend of data that failed in the initial transmission. Therefore, no new data is sent in the retransmission.

[0043] As previously described, H-ARQ is divided into H-ARQ type II and H-ARQ type III according to whether systematic bits are retransmitted or not. Distinguished according to whether the same parity bits are retransmitted, the main H-ARQ type II is FIR and H-ARQ III includes CC and PIR.

[0044] The invention described below will be applied to all the above-mentioned H-ARQ methods. In CC, th...

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Abstract

The modulation symbols in a region (1) having high error probability, is converted into modulation symbols in a region (3) having low error probability, by using 16 quadrature amplitude modulation (QAM) or 64 QAM scheme. The modulation symbols in a region (2) having low error probability, are converted into different modulations to generate re-transmission modulation symbols. Independent claims are also included for the following: (1) coded bit retransmission apparatus; (2) coded bit retransmission method; (3) coded bit receiving method; and (4) coded bit receiving apparatus.

Description

[0001] This application claims priority to "Transmission / Reception Apparatus and Method for Packet Retransmission in Mobile Communication System", filed in the Korean Patent Office on October 15, 2001, Serial No. 2001-63519, which application The content is here for reference. technical field [0002] The present invention generally relates to a broad W-CDMA (Wideband Code Division Multiple Access) mobile communication system, and more particularly, to a transmission / reception apparatus and method for improving the decoding performance of retransmission. Background technique [0003] The negative effects in high-speed, high-quality data services depend on the channel environment in the mobile communication system. The radio channel environment is constantly changing due to changes in signal power due to white noise and decay, shielding, Doppler effects due to terminal movement and frequency speed changes, as well as interference and multipath signals from other users. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/00H04L1/00H04L1/16H04L1/18H04L27/34H04W28/04H04W28/18H04W76/02
CPCH04L1/0066H04L1/1819H04L1/0071H04L1/1816H04L1/0068H04B2201/709709H04L27/3405H04L1/1845H04L1/1893H04L1/1861H03M13/3769H04L1/16
Inventor 金鲁善文庸石金宪基尹在升
Owner SAMSUNG ELECTRONICS CO LTD
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