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Method and system for inhibiting overlapping interference between wave beams in multiple address system

A beam and system capacity technology, applied in the field of multiple access technology, can solve problems such as packet coverage defects, beam overlapping interference, etc., and achieve the effects of improving beam overlapping interference, improving dynamic characteristics, and improving spectrum utilization

Inactive Publication Date: 2010-02-10
SHENZHEN TINNO WIRELESS TECH
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Problems solved by technology

[0004] The present invention designs a multiple access system and method using space division and code division for the above-mentioned packet coverage defects and beam overlap interference problems of the existing space division multiple access (SDMA) technology
On the other hand, the code division feature is introduced. When overlapping interference occurs between beams, orthogonal codes are adaptively assigned to beams, and beams are identified with orthogonal codes to solve the problem of overlapping interference between beams.

Method used

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  • Method and system for inhibiting overlapping interference between wave beams in multiple address system
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  • Method and system for inhibiting overlapping interference between wave beams in multiple address system

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Embodiment Construction

[0026] According to the characteristics presented by each access user's downlink channel, the present invention uses the strong correlation between the user's spatial position and mobility as the user's grouping measure, and performs correlation calculation in real time. Shape-forming dynamically tracks and partitions each group of users. At the same time, the inter-beam correlation is calculated in real time, the code division feature is introduced, and the orthogonal codewords are adaptively assigned to the strongly correlated beams, and different beams are identified from the two characteristics of space and orthogonal codes, and relatively independent beams are formed on the spatial channel. The beam coverage area can improve the beam overlapping interference problem in the SDMA multiple access system, and also provide support for better dynamic partition coverage.

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the...

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Abstract

The invention discloses a method and system for inhibiting overlapping interference between wave beams in a multiple address system and relates to mobile communication technology. Space division and code division are effectively combined, spatial information of wireless channel is fully utilized, correlation detection is carried out on accessed user in real time, strong correlation users are dynamically grouped, and beam forming is carried out for dynamic tracking and covering on user grouping; and correlation detection is carried out on the formed wave beams in real time, orthogonal code is distributed for adaptation of relevant wave beams, so as to effectively inhibit mutual interference between wave beams. The formed wave beams are identified by spatial and orthogonal code characteristic, thus realizing improvement of system capacity, communication quality and frequency spectrum utilization.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to the multiple access technology in the mobile communication technology. Background technique [0002] The design concept of space division multiple access (SDMA) technology is to realize user access by dynamically identifying, locating and tracking through multiple high-gain narrow beams respectively corresponding to multiple desired users. However, in practical applications, if one beam is used to access one user, as the number of users increases, the number of beams will increase accordingly, which will increase the system load and put forward higher requirements for system processing capabilities. When the number of users increases to a certain number, if the above-mentioned multiple access scheme technology is still used, the application of the smart antenna technology in the cellular mobile communication system will become impractical. In order to make full use ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/14H04W16/28
Inventor 张祖凡卢晓宇丁市召
Owner SHENZHEN TINNO WIRELESS TECH
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