Dynamic spectrum sharing (DSS) method used in multi-cell heterogeneous network (Het-Net)

Abstract

The invention discloses a dynamic spectrum sharing (DSS) method used in a multi-cell heterogeneous network (Het-Net), and belongs to the field of wireless communications. The method comprises the following steps of: dividing each Macro cell into four parts such as one Macro cell inner ring and three Macro cell outer rings, wherein, the three Macro cell outer rings can only use a designated frequency band part, and the Macro cell inner ring can use the frequency bands which are not used by all the Macro cell outer rings; reclassifying Pico cells, wherein, central Pico cells can reuse all uplink frequency bands of the Macro cells only by a TDD (Time Division Duplexing) mode, and edge Pico cells can reuse all the uplink frequency bands of the Macro cells or a downlink frequency band corresponding to an area D by the TDD mode; and averagely allocating available resource in each sector to each CMUE (central Macro user (UE)), EMUE (Edge Macro UE) and PUE (Pico UE) in the sector. The DSS method used in the multi-cell Het-Net has the beneficial effects of obviously improving the communication quality of cell-edge UEs (CEUs), solving the difficulty in a frequency reuse mode between the Macro cells and the Pico cells to a certain extent, and realizing coordination of interference between the Macro cells and the Pico cells.

Description

Technical field [0001] The invention relates to a spectrum sharing method suitable for multi-cell heterogeneous networks, in particular to a dynamic spectrum sharing method for improving the communication quality of cell edge users and the system spectrum utilization rate. It belongs to the field of wireless communication. Background technique [0002] The demand for wireless communication services continues to grow, and users (UE, users) have increasingly higher requirements for mobile communication transmission rates. In order to effectively solve this problem, the concept of Heterogeneous Network (Het-Net, Heterogeneous Network) is proposed in the follow-up evolution LTE-Advanced of the Long Term Evolution (LTE) technology. A heterogeneous network is a hybrid network in which low-power nodes are deployed in traditional cells. The traditional cells here are the Macro cells in the present invention, and the low-power nodes are the Pico cells. The use of Pico nodes significantl...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low spectrum utilization rate and serious interference of cell edge users in the current heterogeneous network, the present invention proposes a system design to improve spectrum utilization rate and cell edge user communication quality without changing the overall layout of the network Program

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