Reliable communication based femtocell user clustering method in cognition heterogenous network

A technology of cognitive heterogeneous network and home base station, which is applied in the field of clustering of home base station users based on reliable communication in cognitive heterogeneous network

Active Publication Date: 2014-11-19
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] Through a large number of investigations and based on the above discussion, the existing interference research methods have not improved spectrum utilization while reducing co-channel interference and ensuring reliable communication for femtocell users in the case of scarce spectrum resources.

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  • Reliable communication based femtocell user clustering method in cognition heterogenous network
  • Reliable communication based femtocell user clustering method in cognition heterogenous network
  • Reliable communication based femtocell user clustering method in cognition heterogenous network

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Embodiment Construction

[0020] A non-limiting embodiment is given below in conjunction with the accompanying drawings to further illustrate the present invention. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0021] 1 Network Model and Assumptions

[0022] It is assumed that in the cognitive heterogeneous network, N home base stations exist in the coverage area of ​​the macro base station. There are overlapping coverage areas among the home base stations, and a home base station user FUE1 is located at the edge of the coverage area of ​​the FBS1 and is also within the coverage area of ​​the FBS2. When the home base station FBS2 is communicating with the home base station user FUE2 at its edge, the downlink transmission of the home base sta...

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Abstract

The invention discloses a reliable communication based femtocell user clustering method in a cognition heterogenous network. The clustering method comprises the following steps: at the initial moment of each time slot, acquiring position information of non-clustered femtocell base stations by perceiving available spectrum of the stations; under the management of an integrated controller, obtaining path loss information among all femtocell base stations with communication users to be regarded as interference among the femtocell users; randomly selecting one existing femtocell user cluster for the non-clustered femtocell users, calculating the interference subjected by each femtocell base station; if all the femtocell base stations in the cluster satisfy the interference limiting condition, enabling the femtocell users to join the cluster; if not, selecting other clusters, and judging whether the femtocell users satisfy the condition to join the other clusters or not. The clustering method improves stability and anti-interference performance of femtocell base station communication.

Description

technical field [0001] The present invention aims at research on interference management among home base station users in a cognitive heterogeneous network, belongs to the technical field of cognitive wireless network communication, and in particular relates to a large number of home base station users within the coverage area of ​​a macro base station, and these home base station users use Research on methods to effectively suppress mutual interference and ensure reliable communication of home base station users when spectrum resources are limited. Background technique [0002] In recent years, with the development of the mobile Internet and the emergence of a large number of smart terminals, wireless data services have exploded. At the same time, due to the increasingly powerful functions of mobile terminals, there must be higher requirements for the rate of real-time and non-real-time data services. It has been proven that more than 50% of total phone calls and 70% of da...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08
Inventor 李云刘瑞雪曹傧刘期烈
Owner CHONGQING UNIV OF POSTS & TELECOMM
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