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Distribution type antenna system, and communication method

A distributed antenna and resource allocation information technology, applied in diversity/multi-antenna systems, radio transmission systems, transmission systems, etc., can solve problems such as the inability to guarantee the maximum channel capacity of the system, and achieve the effect of increasing system capacity

Inactive Publication Date: 2007-02-21
SOUTHEAST UNIV +1
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Problems solved by technology

For such a system, there is a problem to be solved: when a user wants to access the system, which wireless access units should be selected to communicate with it
In such a distributed antenna system, the problem is how to select the wireless access unit to send signals to the user to make the system perform best
[0017] The two methods mentioned above are actually based on the absolute value of the path loss to select the wireless access unit, and neither of them can guarantee the maximum channel capacity of the system

Method used

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  • Distribution type antenna system, and communication method
  • Distribution type antenna system, and communication method
  • Distribution type antenna system, and communication method

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Embodiment Construction

[0039] The distributed antenna system of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] image 3 It is a schematic diagram of the distributed antenna system of the present invention. image 3 A plurality of cells (indicated by dotted circles) are shown in , and each cell includes at least one central processing unit and a plurality of wireless access units. For ease of description, image 3 A central processing unit CU and multiple wireless access units are uniformly set in each cell in the system, but in an actual system, the number and distribution of wireless access units can be set according to the conditions of the cell.

[0041] In each cell, the wireless access unit is connected to the central processing unit. On the one hand, each wireless access unit receives uplink information from users in the cell and transmits the uplink information to the central processing unit after processing. On the one hand, e...

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Abstract

The antenna system thereof is base on cell architecture; each cell comprises a CPU, multi wireless access units and transmission link; the multi wireless access units are respectively connected to the CPU through their own transmission link. Wherein, the wireless access unit comprises a duplexer and an antenna mounted on it; the CPU comprises a path loss estimator, a resource allotter, a transmission processor, a wireless access unit selector and a RF link group.

Description

technical field [0001] The present invention relates to a multi-antenna system and its communication method, in particular to a distributed antenna system and its communication method. The distributed antenna system and communication method can select the optimal wireless access unit for a certain user, Thus providing the best system capacity. Background technique [0002] Future wireless communication systems need to support very high-speed data services, such as video conferencing, video on demand, interactive games, and so on. According to the requirements mentioned in the ITU-R M1645 document: for high-speed wireless services (High Mobility), it is necessary to support a rate of up to 100Mbps; for low-speed (Low Mobility) or fixed wireless (Fixed wireless) services, it is necessary to reach 1Gbps rate. At the same time, as a wireless communication system, it must also ensure the coverage of the system and provide high data rate services for any user anywhere and at any...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/00H04B7/02H04B7/04
Inventor 赵新胜尤肖虎潘振岗陈岚加山英俊张战
Owner SOUTHEAST UNIV
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