Method for implementing space division multiple access by TD-SCDMA indoor distribution system

Abstract

The invention discloses a method used for realizing Space Division Multiple Access (SMMA)by a TD-SCDMA indoor distribution system, comprising the steps as follows: an uplink associated special physical channel is estimated, thus gaining the symbol average energy of each uplink associated special physical passage of each user in the measurement period; the passage of each user with the highest symbol average energy is selected as the best emission passage of each user; the symbol average energies of best emission passages of every two users are compared to judge whether each user can be space-divided or not; the deploying authority of the uses which can be space-divided is calculated; the space division users are grouped according to a rule arranged in advance; the space division users of the same group are code-reused in a way of space division multiple address; space reuse of the same code resource is carried out by introducing the SDMA technique of the indoor distribution system and the natural insulation of the floors, thus effectively improving the utilization ratio of the code resource, improving the transmission throughput of the downlink data and the transmission efficiency of the system.

Description

technical field [0001] The present invention relates to a kind of SDMA (Spatial Division Multiple Access, space division multiple access) method of TDD (Time Division Duplexing, time division duplex) communication system, what relate in particular is, a kind of third generation mobile communication field HSDPA (High-Speed Downlink PacketAccess, high-speed downlink packet access) SDMA implementation method in the indoor environment of the system. Background technique [0002] For ordinary TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time division synchronous code division multiple access technology) indoor distribution system, such as figure 1 As shown, all channels share the same code resource, that is to say, all floors logically form a cell, the scrambling code is the same, the code channel is the same, and all baseband channels send data for a certain user at the same time, so The problem is that, due to the isolation of floors and walls between dif...

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Problems solved by technology

[0002] For ordinary TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time division synchronous code division multiple access technology) indoor distribution system, such as figure 1 As shown, all channels share the same code resource, that is to say, all floors logically form a cell, the scrambling code is the same, the code channel is the same, and all baseband channels send data for a certain user at the same time, so The problem is that due to the isolation of the floor walls between different floors, the signals emitted by some channels are almost attenuated by these penetration losses, which damages the system efficiency

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