Device and method for retransmitting data in mobile communication system

A technology for data retransmission and hybrid automatic retransmission, applied in the direction of transmission system, wireless communication, selection device, etc., which can solve the problems of discarding part of retransmission and waste of transmission resources of packet data system.

Inactive Publication Date: 2004-02-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the retransmitted part will be discarded even though it is normally received at the UE
This will cause unnecessary retransmission of packet data and waste of system transmission resources

Method used

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  • Device and method for retransmitting data in mobile communication system
  • Device and method for retransmitting data in mobile communication system
  • Device and method for retransmitting data in mobile communication system

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Embodiment Construction

[0027] Several preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the drawings, the same or similar elements are denoted by the same reference numerals even if they are depicted in different drawings. In the following description, detailed descriptions of known functions and configurations are omitted for conciseness.

[0028] figure 2 A method for retransmitting packet data in an HSDPA mobile communication system is schematically shown. refer to figure 2 , Node B 210 first transmits packet data to UE 220 on a high-speed physical downlink shared channel (hereinafter referred to as "HS-PDSCH"). suppose in figure 2 The Node B 210 transmits the first to ninth packet data to the UE 220 . Such as figure 2 As shown, the Node B 210 transmits the packet data to the UE 220 on the HS-PDSCH, and the UE 220 transmits the ACK signal of the packet data received from the Node B 210 or The NACK signal is tr...

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Abstract

An apparatus for retransmitting data using hybrid automatic retransmission request (HARQ) in a mobile communication system. A radio network controller (RNC) determines maximum waiting time for retransmission of the data, and transmits the determined maximum waiting time to a Node B and a user equipment (UE). The Node B (a) receives the maximum waiting time and transmitting the data to the UE; (b) upon detecting a retransmission request for the data from the UE, retransmits the data and sets the maximum waiting time; and (c) upon detecting a second retransmission request for the data due to abnormal receipt of the retransmitted data from the UE after a lapse of the maximum waiting time, prevents retransmission of the data. The UE (a) receives the maximum waiting time; (b) if an error exists in data received from the Node B, transmits a retransmission request for the data to the Node B and sets the maximum waiting time; and (c) waits for the retransmitted data only for the maximum waiting time.

Description

[0001] Cross References to Related Applications [0002] This application, filed with the Korean Intellectual Property Office on May 10, 2002 under Section 119 of Title 35 of U.S.C and assigned Serial No. 2002-25967, is entitled "Retransmission of Data in a Mobile Communication System Apparatus and Methods" application, the contents of which are incorporated herein by reference. technical field [0003] The present invention relates generally to a mobile communication system utilizing a high-speed downlink packet access scheme, and particularly to an apparatus and method for retransmitting defective packet data. Background technique [0004] figure 1 The structure of a conventional mobile communication system is schematically shown. figure 1 The mobile communication system shown in , that is, the UMTS (Universal Mobile Telecommunications System) mobile communication system, includes a core network (hereinafter referred to as "CN") 100, a plurality of radio network subsyste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04B7/26H04L1/18H04L12/54H04W28/00H04W28/04H04W72/12H04W88/08H04W88/12
CPCH04W88/08H04W72/1242H04L1/1887H04L1/1812H04W88/12H04W28/04H04L1/188H04W72/569H04B7/26
Inventor 崔成豪金旭朴俊枸林永珠
Owner SAMSUNG ELECTRONICS CO LTD
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