Relay station broadcast message transmission method in multi-hop relay network

A broadcast message and multi-hop relay technology, applied in the field of communication, can solve the problems of large delay, high overhead, and inability to guarantee downlink bandwidth relay stations, etc., to achieve the effect of reducing overhead and delay

Active Publication Date: 2009-07-15
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The existing technical solution has two major disadvantages. One is that the overhead caused by the bandwidth application header sent each time is too large, and the other is that after the base station receives the bandwidth application, it cannot guarantee that the downlink bandwidth can be allocated to the relay station immediately, that is, cause a large delay

Method used

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  • Relay station broadcast message transmission method in multi-hop relay network
  • Relay station broadcast message transmission method in multi-hop relay network

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Embodiment Construction

[0026] As mentioned above, after receiving the DCD / UCD and other management messages, the relay station saves them and periodically broadcasts them on the downlink. In order to save overhead and ensure timely allocation of bandwidth, the present invention proposes that the bandwidth used by the relay station to send broadcast messages on the downlink is actively allocated by the base station, without requiring the relay station to apply to the base station before each transmission.

[0027] The periodic sending interval of the broadcast message of the relay station is defined during initial configuration of the relay station or notified to the base station during basic capability interaction. The base station actively allocates downlink bandwidth for the relay station periodically according to the periodic sending interval of the broadcast message of the relay station, which is indicated by a specific MAP IE. The MAP IE indicates the message type corresponding to the allocated ...

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Abstract

The invention discloses a relay station broadcast message transmission method in a multi-hop relay network, which can reduce system cost and delay. The method is suitable for a non-transparent centralized scheduling multi-hop relay network, and comprises that a base station sends messages waiting to be broadcasted to the relay station, after the relay station receives the messages a confirm end is returned to the base station, after receiving the confirm end the base station periodically sends messages directing the bandwidth allocation of a downlink to the delay station, the messages are used for directing the downlink bandwidth automatically allocated for the delay station by the base station, and the delay station can send broadcast messages to a terminal or a lower layer delay station in the downlink bandwidth. By adopting the method of the invention, cost on sending management messages, such as DCD / UCD, and the like by the delay station can be reduced, bandwidth used for sending the management messages can be confirmed to be distributed timely, and the delay is reduced.

Description

technical field [0001] The present invention relates to the communication field, and more particularly relates to a relay station broadcast message transmission method in a non-transparent centralized scheduling multi-hop relay network. Background technique [0002] Such as figure 1 As shown, in a multi-hop relay system, one or several relay stations (Relay Station, referred to as RS) are arranged between a base station (Multi-hop Relay Base Station, referred to as MR-BS) and a mobile terminal ( Mobile Stations, referred to as MS), through the relay station to the base station and terminal signal relay transmission to achieve the expansion of coverage and the increase of system capacity. In order to meet the needs of different application scenarios, the relay station can be set as a fixed relay station or a mobile relay station. Depending on whether to generate and transmit a prefix and a control message, relay stations can be classified into transparent relay stations and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04W72/04H04W72/12H04W80/02H04L1/16H04W88/08H04B17/40
CPCH04W84/047H04W72/005H04B7/2606H04W72/0453H04W72/1289H04W72/30H04W72/23
Inventor 陈玉芹曲红云
Owner ZTE CORP
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