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

A heterogeneous network and dynamic spectrum technology, which is applied in network planning, electrical components, wireless communication, etc., can solve problems such as low spectrum utilization and interference of users at the edge of the cell, and achieve the effect of improving communication quality

Inactive Publication Date: 2012-03-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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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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  • Dynamic spectrum sharing (DSS) method used in multi-cell heterogeneous network (Het-Net)
  • Dynamic spectrum sharing (DSS) method used in multi-cell heterogeneous network (Het-Net)
  • Dynamic spectrum sharing (DSS) method used in multi-cell heterogeneous network (Het-Net)

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[0025] The following describes the present invention in detail with reference to the accompanying drawings and embodiments, and also describes the technical problems and beneficial effects solved by the technical solutions of the present invention. It should be pointed out that the described embodiments are only intended to facilitate the understanding of the present invention. It does not have any limiting effect.

[0026] The dynamic spectrum sharing technology combined with the FFR technology described in this technical solution mainly solves the problems of severe interference to cell edge users in a multi-cell heterogeneous network and low spectrum utilization. The present invention introduces dynamic spectrum sharing (DSS, Dynamic Spectrum Sharing) technology, and combines it with part of frequency reuse technology and applies it to multi-cell heterogeneous networks, so that the improved system performance has both dynamic spectrum sharing technology and part The advantages...

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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 subsequent 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 significant...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/14
Inventor 费泽松李猛李军龙高巍李娜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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