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Combined type relay system and state switching method thereof

A relay system and state switching technology, applied in baseband system components, repeaters/relay circuits, etc., can solve the problem of difficulty in implementing directional tracking antennas, eliminate multipath interference, achieve simple, low cost effect

Inactive Publication Date: 2013-08-14
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the high-speed mobile communication environment of high-speed rail, it is more difficult to realize the directional tracking antenna

Method used

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  • Combined type relay system and state switching method thereof
  • Combined type relay system and state switching method thereof
  • Combined type relay system and state switching method thereof

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Experimental program
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Embodiment Construction

[0054] Below in conjunction with accompanying drawing, specific embodiment of the present invention and principle are described in detail:

[0055] The application scenario of the combined relay system of the present invention is the same as figure 1 The application scenario of the prior art shown.

[0056] In the prior art, there are multiple radio remote units and / or base stations arranged in a linear arrangement in a high-speed rail application scenario. On a carrier moving at high speed (take high-speed railway trains as an example) 101, two mobile repeaters 111 and 112 are installed as relay devices. Each mobile repeater has a directional tracking donor antenna (that is, an antenna facing the remote radio unit), which receives the signals of the two nearest remote radio units 122 and 121 at the front and rear respectively. The two mobile repeaters 111, 112 share a receiver antenna (that is, the antenna facing the mobile station) to implement wireless coverage on the car...

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Abstract

The invention discloses a combined type relay system and a state switching method thereof. The system is arranged on a high speed moving carrier and capable of synchronously moving along with the carrier, and can receive signals in different directions through a plurality of directional antennas towards different directions to realize identification of the signals in an air domain; one relay device is used for completing covering the signals of the current covering region, and the other relay device pre-traces signals of the next covering region or completes overlapped covering of the signalsof the two neighboring cells together with the former relay device; the two relay devices are exchanged every a covering region; a control unit selects the signals in different directions according to different situations to pass through different relay devices, and switches and combines the signals to complete quasi single channel covering inside the moving carrier, so manmade multi-channel interference is eliminated, and the reliable communication between a mobile platform in the moving carrier and different radio frequency remote units or base stations along a railway. The system provided by the invention has the characteristics of simple implementation, low cost, reliable quality and the like.

Description

technical field [0001] The invention relates to the field of wireless network coverage optimization of mobile communication, in particular to a combined relay system and a state switching method thereof. Background technique [0002] In the high-speed railway mobile communication environment, if the base station is used to directly cover the railway area, in order to avoid frequent handovers, the coverage radius of each base station needs to reach more than ten kilometers. For the linear railway area, this The efficiency of the base station direct coverage method is very low. In order to improve the coverage efficiency, wireless coverage can be realized by adding base stations and remote radio units. A base station can be configured with multiple remote radio units, lined up along the railway. Compared with the coverage radius of the base station, the coverage radius of each radio remote unit is small, so it is easy to achieve effective coverage of the linear railway area ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/20
Inventor 窦怀宇高伟钱春
Owner COMBA TELECOM SYST CHINA LTD
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