Method for implementing mixed automatic retransmit in communication system containing repeater station

A hybrid automatic retransmission and communication system technology, applied in the field of hybrid automatic retransmission, can solve the problem of hybrid automatic retransmission that does not include base stations and terminals, and achieve the effects of improving transmission quality, realizing transparency, and improving performance

Inactive Publication Date: 2007-10-03
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] However, in the 802.16 protocol, it does not include how to realize the hybrid automatic retransmission p

Method used

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  • Method for implementing mixed automatic retransmit in communication system containing repeater station
  • Method for implementing mixed automatic retransmit in communication system containing repeater station
  • Method for implementing mixed automatic retransmit in communication system containing repeater station

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Example Embodiment

[0062] In the present invention, the HARQ process after introducing the relay station into the communication system using time division duplex (TDD) and OFDMA mode similar to the 802.16 protocol is realized.

[0063] After introducing the relay station, the physical frame structure of the base station, the relay station and the terminal can be as shown in Figure 5, or as shown in Figure 6, where the part filled with oblique lines is the transmitting state, the part without filling is the receiving state, and the dotted line box is idle state, the grid filling part is the terminal frame header of the next frame. The base station frame includes four parts: terminal downlink subframe, relay downlink subframe, terminal uplink subframe and relay uplink subframe. The terminal downlink subframes and terminal uplink subframes are used by the base station to provide services for terminals within its coverage, and the relay downlink subframes and relay uplink subframes are used to provi...

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Abstract

A method for realizing mixed automatic retransmission in communication system containing relay station includes sending data block to opposite end by terminal or base station through relay station, returning reception state of data block back to sending end by relay station after sending process is finished and confirming that it is necessary to retransmit data block or not by sending end according to said reception state.

Description

technical field [0001] The invention relates to hybrid automatic retransmission technology, in particular to a method for realizing hybrid automatic retransmission in a communication system with a relay station. Background technique [0002] Worldwide Interoperability for Microwave Access (WiMAX) is a Broadband Wireless Access (BWA) technology whose air interface is based on the IEEE 802.16 protocol. The Orthogonal Frequency Division Multiple Access (OFDMA) method adopts OFDMA as one of its multiple access methods due to its unique advantages. The physical frame structure of the time division duplex (TDD) mode OFDMA specified in the 802.16 protocol is shown in Figure 1. The WiMAX system adopts this frame structure, where (a) is the base station frame, (b) is the terminal frame, The part filled with slashes is the transmitting state, and the part without filling is the receiving state. A base station frame is composed of a downlink subframe and an uplink subframe, the downl...

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Application Information

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IPC IPC(8): H04B7/26H04L1/18
CPCH04L1/1812H04L1/1614H04L1/1803H04L5/0007H04L2001/0097
Inventor 张爱民尚政王媛媛
Owner HUAWEI TECH CO LTD
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