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A Dynamic TDD Configuration Method for Reducing Serial Interference Between Micro Cell Clusters

A serial interference and configuration method technology, applied in wireless communication, power management, electrical components, etc., can solve the problems of no research on inter-cluster interference, unexplained change degree, limited service adaptability, etc., to meet user service needs Adaptive requirements, interference reduction, and the effect of solving inter-cell interference

Active Publication Date: 2019-01-29
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0009] Among the existing inventions, there is almost no research on inter-cluster interference. Most of them are based on cross-layer interference between macro and micro. Some are based on dynamic configuration changes of services, but the specific degree of change is not specified. Some are based on predicted interference values. Select the configuration method, if the interference is predicted to be large, the configuration will not be changed, but this limits the business adaptability

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  • A Dynamic TDD Configuration Method for Reducing Serial Interference Between Micro Cell Clusters
  • A Dynamic TDD Configuration Method for Reducing Serial Interference Between Micro Cell Clusters
  • A Dynamic TDD Configuration Method for Reducing Serial Interference Between Micro Cell Clusters

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Embodiment

[0108] Users are deployed in a wireless communication heterogeneous network in an ultra-dense networking scenario. The macro base station is used for basic coverage, and the micro base station is used to fill coverage holes and improve the capacity of hotspot areas. According to business adaptability, M micro base stations are formed into one Cell clusters are convenient for management and control. Each cluster uses the same TDD uplink and downlink subframe configuration, and one macro cell contains C micro cell clusters. Such as Image 6 As shown, it is assumed that there are three micro cell clusters within the coverage of a macro cell, which are respectively micro cell cluster 1, micro cell cluster 2 and micro cell cluster 3. Micro cell cluster 1 includes three micro base stations, which are base station ID11, base station ID12 and base station ID13; micro cell cluster 2 includes 3 micro base stations, respectively base station ID21, base station ID22 and base station ID23;...

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Abstract

The present invention is a dynamic TDD configuration method for reducing serial interference between micro-cell clusters, which belongs to the field of mobile communication; specifically, it is as follows: firstly, counting the interference value of each micro-cell cluster to itself by all other micro-cell clusters; then, The interference value is divided into grade 1 to grade C from large to small; set the micro cell cluster of grade 1 as the target cell cluster, and define other cell clusters as neighbor cell clusters. Finally, match the UL-DL subframe configuration mode for the target cell cluster and the neighboring cell cluster respectively, and report the target cell cluster to all base stations in the cluster and the cluster head of the neighboring cell cluster; after comparing the configuration modes of the neighboring cell cluster and the target cell cluster, The neighboring cell cluster reports the compared UL-DL subframe configuration mode to all base stations in the cluster. The advantage is that the interference value and service adaptability are comprehensively considered, and by setting the downlink transmission power reduction value and clarifying the signaling interaction process between the target cell cluster and adjacent cell clusters, the interference between cell clusters is reduced and the system performance is improved.

Description

technical field [0001] The invention belongs to the field of mobile communication, and describes a dynamic TDD configuration method for reducing serial interference between small cell clusters. Background technique [0002] The future 5G network is a network form that integrates multiple access technologies, multiple deployment scenarios, and multiple connection methods, and needs to meet the business needs of various users. It is the development trend of next-generation wireless networks to adopt ultra-dense deployment of micro base stations to improve the throughput of service hotspots. In the ultra-dense network, the serial interference between adjacent micro base stations is particularly obvious, which seriously affects the average throughput of the system. The effective management method usually adopted to solve this problem is to perform clustering and centralized control on the cells; [0003] A relatively common cell clustering method is a dynamic clustering method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W52/14H04W72/08H04W72/54
CPCH04W24/02H04W52/143H04W72/541
Inventor 啜钢张璇
Owner BEIJING UNIV OF POSTS & TELECOMM
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