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Multi-jumper radio relay communication system and its download data transmission method

A transmission method and wireless relay technology, applied in the field of communication, can solve problems such as inability to realize multi-hop data transmission

Active Publication Date: 2012-06-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] In view of this, the purpose of the present invention is to provide a multi-hop wireless relay communication system and its downlink data transmission method to solve the problem that multi-hop data transmission cannot be realized in the multi-hop wireless relay communication system in the prior art

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  • Multi-jumper radio relay communication system and its download data transmission method
  • Multi-jumper radio relay communication system and its download data transmission method
  • Multi-jumper radio relay communication system and its download data transmission method

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Embodiment Construction

[0116] Table 1 is a schematic diagram of the storage format of the routing database in the present invention.

[0117] In the present invention, as shown in Table 1, the routing database is composed of three domains, including a next hop relay station (Next Hop) domain, a path identification (Path ID) domain and a connection identification (CID) domain. The next hop relay station (Next Hop) field is used to store the next hop relay station identifier and the number of next hop relay stations, the path identifier field is used to store the path identifier and the number of paths passing through the current node, and the connection identifier field is used to store the The number of user terminal connection identifiers and user terminal connection identifiers of each path. Wherein, a path (Path) refers to an ordered set of all relay stations passed through by a connection from a BS (Base Station, Base Station) to a certain terminal, and each path is assigned an identifier called...

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Abstract

The invention discloses a downlink data transmitting method which is applied to a multi-hop wireless relay communication system. The communication system includes: a base station and one or more relay stations. The base station and the relay stations are node devices. The method includes the following steps: respectively arranging a route database in the node devices, the route database storing a corresponding relationship of a connection identifier and a next hop relay station ID; the node devices searching the connection identifier in a downlink Media Access Control Protocol Data Unit (MPDU) from the route database; if the route database has the connection identifier, according to the corresponding relationship, acquiring all the next hop relay station IDs corresponding to the connection identifier, then transmitting the downlink MPDU to all the acquired next hop relay station IDs till to a user terminal. The invention can realize data transmission of the multi-hop wireless communications system without changing the protocol structure of existing UE and core network. Furthermore, the invention also discloses the multi-hop wireless relay communications system as well as the base station and the relay station applied in the system.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a multi-hop wireless relay communication system and a downlink data transmission method thereof. Background technique [0002] In a wireless communication system, due to path attenuation of electromagnetic waves or building occlusion, some places become areas with low wireless communication signal strength, and the communication quality of mobile user terminals located in these areas will become very poor. As people's demand for broadband wireless communication increases day by day, the demand for wireless bandwidth becomes larger and larger, so higher and higher carrier frequencies are used in new protocols and systems. However, since the attenuation of radio waves increases with the increase of frequency, high carrier frequencies must face the problem of high attenuation, which further limits the coverage of base stations. [0003] In order to solve the coverage problem ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/28
CPCH04W88/04H04W40/22H04W8/26
Inventor 张爱民尚政冯成燕李江
Owner HUAWEI TECH CO LTD
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