Method for eliminating shadow region of mobile subscriber by using multiple antennae of multiple base station terminals

A mobile user and multi-antenna technology, applied in diversity/multi-antenna systems, space transmit diversity, preventing/detecting errors through diversity reception, etc., can solve problems such as waste, unfavorable user services, waste of antennas of other base stations, etc., to achieve The effect of improving overall performance, increasing the number of system users, and reducing complexity

Inactive Publication Date: 2011-05-18
SHANGHAI DIANJI UNIV
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Problems solved by technology

[0005] Furthermore, in the existing method, if the antennas of multiple base stations are used as antennas of one base station, while obtaining system performance gains, when there are multiple users in the section of each base station that need to se

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  • Method for eliminating shadow region of mobile subscriber by using multiple antennae of multiple base station terminals
  • Method for eliminating shadow region of mobile subscriber by using multiple antennae of multiple base station terminals
  • Method for eliminating shadow region of mobile subscriber by using multiple antennae of multiple base station terminals

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Embodiment Construction

[0035] Embodiments of the present invention are described with reference to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. In the following embodiments, the same parts are denoted by the same symbols in different drawings.

[0036] When the present invention selects a multi-user service mode in a multi-base station, it is first assumed that there are K base stations in the system, and each base station has Nk antennas. In this way, for user m in the k-th cell, firstly, according to the communication situation with the base station in the k-th cell, it is judged whether user m is at the edge of the cell, and if so, choose to use multiple base stations in adjacent multiple cells for it. service; if not then the service to user m can be accomplished by the multiple antennas of the base station in cell k using space division multiplexing. In the selection of the user service mode in the cell, the multi-antenna of ...

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Abstract

The invention provides a method for eliminating a shadow region of a mobile subscriber by using multiple antennae of multiple base station terminals. The method comprises the following steps of: a. analyzing a channel matrix from a base station to a subscriber; b. judging the receiving signal to noise ratio of the subscriber under the condition that subscriber noise power is supposed to be known; c. judging whether the subscriber meets single-cell service condition according to the receiving signal to noise ratio of the subscriber; if so, entering a step d; and otherwise, entering a step e; d. servicing the subscriber only by the station of the current cell, and performing space division multiplexing for the subscriber in the current cell by a base station antenna; e. servicing the subscriber by the base stations of a plurality of cells, and performing space division multiplexing for the subscriber by base station antennae, and servicing the subscriber by different weave beams formed by multiple antennae of base stations of adjacent cells; and f. calculating a wave beam forming vector according to a service mode. The method is favorable for effectively eliminating the shadow region, reducing the complexity of scheduling multiple antennae of the base stations and improving communication quantity.

Description

technical field [0001] The present invention relates to electronic technology, network technology, communication technology and multimedia application technology, in particular, relates to a method for eliminating shadow areas of mobile users by using multiple antennas at multiple base station terminals. Background technique [0002] In a traditional wireless communication system, one base station in each base station serves mobile users in the cell. When multiple antennas are used at the base station, the multiple antennas at the base station can also be used to use space division multiplexing for different users in the cell to improve the spectrum efficiency of the entire system. However, in such cell division, the base station of each cell only serves the cell, and the signals from other cells are regarded as interference, and measures must be taken to filter them out, so as to ensure that the mobile users in this cell can have reliable communication. communication quali...

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Application Information

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IPC IPC(8): H04B7/04H04L1/06
Inventor 孟银阔
Owner SHANGHAI DIANJI UNIV
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