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Method for achieving continuous broadband communication

A user terminal and signal receiving technology, applied in the direction of space transmit diversity, diversity/multi-antenna system, etc., can solve problems such as high-level signaling delay, and achieve the effect of reducing the call drop rate

Active Publication Date: 2013-03-13
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
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Problems solved by technology

While high-level signaling usually introduces more noticeable delays

Method used

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  • Method for achieving continuous broadband communication
  • Method for achieving continuous broadband communication
  • Method for achieving continuous broadband communication

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Embodiment Construction

[0023] Although this paper takes high-speed trains as an example, those skilled in the art should understand that the present invention is not limited to high-speed trains, and the present invention is also applicable to ground vehicles on expressways, aircraft, etc. or routes of transport.

[0024] figure 2 A schematic diagram of a system topology according to a specific embodiment of the present invention is shown. The system consists of three components, namely In-Train Network (ITN), Train-to-Ground Network (TGN) and Ground Network (GN). In the present invention, the TGN includes an on-board train access unit (Train Access Unit, TAU), a track side radio remote unit (Remote Radio Header, RRH), and a baseband processing unit (Base Band Unit). The TAU is responsible for communicating with the trackside RRH via the air interface channel. The number of TAUs deployed on the train depends on the user traffic capacity and the transmission bandwidth between the train and the gr...

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Abstract

The invention provides a method for achieving continuous broadband communication. In an improved communication scheme of a high-speed railway, firstly the network architecture is improved, a virtual single-cell topological structure is provided, a base station selects suitable radio remote units (RRUs) to serve user terminals by the aid of position information of the RRUs, when the base station selects a plurality of RRUs to serve the user terminals, the joint beamforming pre-processing is performed on signals to be sent according to channel state information between the plurality of RRUs and the user terminals.

Description

technical field [0001] The present invention relates to wireless broadband communication, in particular to network topology and beam forming method in wireless broadband communication. Background technique [0002] Wireless broadband has become possible in recent years. Online multimedia, games, application downloads, etc. have become the main services in the mobile network. In order to provide data-intensive applications to passengers on trains such as the China High Speed ​​Railway (CRH) running at 350km / h between Beijing and Shanghai, it is desirable to develop an access network characterized by high bandwidth And can resist high movement speed. In recent years, various efforts have been made to adapt the traditional GSM architecture to High-Speed ​​Train Communication (HSTC), resulting in GSM-R, which is a GSM standard dedicated to railways. GSM-R guarantees voice services for passengers on trains running at 500km / h, and has already been deployed along most high-speed...

Claims

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Application Information

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IPC IPC(8): H04B7/08
Inventor 罗庆霖房伟杨涛
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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