Multi-frequency point TD-SCDMA group network and communication implementing method based on relaying technology

Abstract

This invention relates to realizing method for multi-point TD-SCDMA netwroking and comunication including: 1, programming addresses of base stations, determining the emission power of control channel and service channel of each station adaptively and setting up-and down-line switch points flexibly and carrying out supplement cover to blind regions of service channels with relay nodes, 2, a mobile station initiates an access request according a transparent mode and the base station selects a suitable relay node for it to set up a communication link adaptively and get diversity and multiplex gain of the relay, 3, the base station manages radio resources of relay links in concentration to set emission power of the control channel and service channels and distribute radio resources of frequency, time slot and codes to relay and non-relay links.

Description

technical field [0001] The present invention relates to a method for realizing networking and communication of a TD-SCDMA mobile communication network, to be precise, relates to a flexible and convenient networking and communication of a TD-SCDMA mobile communication system using multiple frequency points of relay technology The realization method of the present invention is to achieve good effects of extending coverage, resisting inter-cell interference, and improving system spectrum efficiency, and belongs to the technical field of network design, networking strategy, and network communication management of mobile communication networks. Background technique [0002] For mobile communication systems, how to expand system capacity is a problem that both equipment manufacturers and operators must consider. Compared with the WCDMA system, the current single-frequency TD-SCDMA system has relatively low capacity. In order to increase the system capacity, the method of multi-ca...

AI Technical Summary

Problems solved by technology

[0008] (1) If the work of the TD-SCDMA smart antenna is not ideal, for example, if there is an error in beam alignment to the target mobile station, the anti-interference ability of TD-SCDMA will decline, and there will be large intra-cell and inter-cell interference, among which intra-cell interference It can be better alleviated by joint detection in the cell, and the inter-cell interference mainly comes from the interference of adjacent base stations, and the large correlation between the scrambling codes of adjacent base stations. It is technically difficult to reduce inter-cell interference by using joint detection technology Big

[0009] (2) Although the multi-frequency point technology can significantly reduce the interference of the control channel, there is still relatively large inter-cell interference for the traffic channel, because the traffic channel between adjacent cells does not use code division multiplexing according to the physical distance. Use, the scrambling code has a large mutual interference characteristic

[0010] (3) Since the control channel of the TD-SCDMA system adopts frequency division multiplexing technology, the transmission power is relatively large. However, due to the interference between cells, in order to ensure the quality of service, the transmission power of the traffic channel is smaller than that of the control channel. The coverage distance of the service channel is small, and there is a service coverage blind spot at the edge of the cell

If adjacent cells need to adaptively set their uplink and downlink time slot switching points, TD-SCDMA is prone to serious cross-slot interference

In order to reduce cross-slot interference, the transmission power of the traffic channel is small, resulting in discontinuous coverage of the cell. This method actually uses sufficient physical isolation distance between the base stations to protect the transmission quality of the communication link; but it causes discontinuity of communication service over the traffic channel

[0013] Due to the above reasons, the multi-frequency TD-SCDMA mobile communication network has problems in many aspects such as capacity, coverage, network design, and asymmetric service support in terms of networking and communication technology, and no good solution has been found so far.

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