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Method for requesting and transmitting status report of a mobile communication system and therefor apparatus

A technology for mobile communication systems and status reporting, which is applied in the direction of error prevention/detection using the return channel, and can solve the problems of the receiver side not being able to recognize, many retransmission requests, and delays.

Inactive Publication Date: 2008-01-30
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, when the receiver fails to receive the last packet, the receiver side cannot recognize the fact that a retransmission needs to be requested, so excessive delay occurs for the retransmission request

Method used

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  • Method for requesting and transmitting status report of a mobile communication system and therefor apparatus
  • Method for requesting and transmitting status report of a mobile communication system and therefor apparatus
  • Method for requesting and transmitting status report of a mobile communication system and therefor apparatus

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Embodiment Construction

[0039] Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In the following description, when the well-known functions and configurations incorporated herein may make the subject of the present invention unclear, detailed descriptions thereof are omitted. In addition, various specific definitions found in the following description are provided to help the overall understanding of the embodiments of the present invention, and it is clear to those skilled in the art that the present invention can be implemented without such definitions.

[0040] The embodiment of the present invention reduces the retransmission delay by determining whether there is an error in the sequence number of the received packet or whether the packet is lost in the packet in the RLC layer of the mobile communication system that supports retransmission of the packet. As a basis for the description of the exemplary embodiment of the present invention, th...

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Abstract

A method and apparatus are provided for reducing excessive retransmission delays which may occur due to the loss of the last packet of a transmission buffer in a Radio Link Control (RLC) layer of a mobile communication system. The method includes receiving a Service Data Unit (SDU) from a higher layer, dividing the SDU into a plurality of Packet Data Units (PDUs), and storing the PDUs in a buffer, setting a poll bit for a last PDU from among the PDUs stored in the buffer, the poll bit requesting a status report, and repeatedly transmitting the last PDU having the setup poll bit at least twice from a sender to a receiver, regardless of whether there is a request for retransmission of the last PDU.

Description

Technical field [0001] The invention relates to a mobile communication system. More specifically, the present invention relates to a method and apparatus for requesting / transmitting a status report in a mobile communication system in order to reduce the delay that occurs in packet retransmission. Background technique [0002] The current mobile communication system has evolved beyond the original system mainly provided for voice communication services, and is now developing towards a high-speed and high-quality wireless data packet communication system that provides data services and multimedia services. In particular, as the universal mobile communication service (3G) of the third-generation (3G) mobile communication system using Wideband Code Division Multiple Access (WCDMA) based on the Global System for Mobile Communications (GSM) General Packet Radio Service (GPRS) adopted in Europe ( UMTS) system, which provides a consistent service through which users of mobile phones or c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16
Inventor 金成勋李国熙郑景仁郭鲁濬
Owner SAMSUNG ELECTRONICS CO LTD
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