Method for improving TD-SCDMA system capacity

Abstract

A method for improving TD-SCDMA system capacity comprises the following steps: according to the inherent physical isolation of a wireless radio transmission environment or by setting different direction angles to different beams, a service cell is divided into N subsidiary spaces, and independent antenna terminals are arranged for the each subsidiary space; a RNC allocates channel resources for the each subsidiary space according to a spatial multiplexing mechanism; when UE requests to be randomly connected into a network, the RNC controls in an admission way according to the subsidiary spaces, at which the UE is located, and the under of the N, when the UE is allowed to be connected, the resources of the subsidiary spaces are used for allocating the resources for the UE; after the UE establishes connection, a base station monitors whether an antenna port which receives a UE uplink signal with the strongest power changes, if the antenna port changes, the RNC is notified that the subsidiary space which is corresponding to the changed antenna port switches the channel which is used for the spatial multiplexing of the UE onto the changed antenna port; and when the UE requests to transmit data, the UE is dispatched according to the subsidiary spaces, at which the UE is located. The invention can improve the utilization of frequency spectrum and reduce the operation maintenance cost of the system.

Description

technical field [0001] The invention relates to a technology for improving the capacity of a mobile communication system, in particular to a method for improving the capacity of a TD-SCDMA system. Background technique [0002] In some application scenarios, there will be some natural isolation in the wireless propagation environment, such as between different floors of the same building, or between areas in different directions covered by directional beams. According to the current networking method, these naturally isolated different areas will belong to different cells, that is to say, when the user equipment (UE) crosses the boundary of these areas, it means that it crosses the boundary of two cells. The complete mobility process can only be achieved through hard or relay handovers. [0003] However, in the above handover process, there is always the interaction of control information among UE, base station (Node B) and radio network controller (RNC) (see figure 1 ), es...

AI Technical Summary

Problems solved by technology

According to the current networking method, these naturally isolated different areas will belong to different cells. The complete mobility process can only be achieved through hard or relay handovers

[0003] However, in the above handover process, there is always the interaction of control information among UE, base station (Node B) and radio network controller (RNC) (see figure 1 ), especially the radio link control (RRC) signaling messages on the air interface and the physical layer synchronization process, need to occupy a certain amount of radio resources

In this way, when a certain number of UEs often perform such a mobility process, a large amount of radio resources will be consumed by the signaling interaction in the mobility process, which affects the improvement of spectrum utilization

[0004] In addition, since each cell has its own baseband signal processor and RF amplifier, these processors process a limited number of UEs in their respective areas, and even if there is surplus processing capacity, they cannot share the load of other cells, which will objectively reduce equipment Use efficiency to maintain operation and maintenance costs at a relatively high level

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