User access method under macro cell and small cell heterogeneous network

A heterogeneous network and access method technology, applied in the field of communication, can solve the problem of large number of small cells, etc., and achieve the effect of reducing transmission power, expanding service range, and improving coverage

Active Publication Date: 2013-12-11
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

[0005] Aiming at the problem in the prior art that the number of small cells is large in order to improve the coverage of small cells, the present invention provides a user access method under the heterogeneous network of macro cells and small cells, without increasing the number of small cells, Effectively improve the coverage of small cells

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  • User access method under macro cell and small cell heterogeneous network
  • User access method under macro cell and small cell heterogeneous network
  • User access method under macro cell and small cell heterogeneous network

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] The technical scenario of the user access method under the heterogeneous network of the macro cell and the small cell in this embodiment is as follows: the radius of the macro cell is R MB =500m, small cell coverage radius is R SB = 100m; there are 9 macrocell users deployed in a macrocell, 4 non-overlapping small cells, each small cell has 4 small cell users, and 5 users to be accessed are outside the coverage of the small cell; The total number of access users is M=5, the total number of small cell users is N=20, the total number of macro cell users is K=9, the SINR threshold of macro cell users and cellular users to be accessed γ cth ,γ dth Both are 15dB, the maximum power P max =23dB, the user bandwidth is 1MHz; the noise power is -174dBm / Hz; the path loss of the cellular communication link is 128.1+37.6log 10 d (in dB), where d is...

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Abstract

The invention discloses a user access method under a macro cell and small cell heterogeneous network, and belongs to the field of communication. According to the user access method under the macro cell and small cell heterogeneous network, users to have access have three kinds of selectable access modes, except for a traditional small cell mode and a traditional macro cell mode, a D2D relay mode further exits, and under a certain condition, the users to have the access outside a small cell coverage range are made to build D2D relay chains with small cell users as relays through the channels of users repeatedly using a macro cell to access small base stations. A D2D relay technology is adopted to help the users outside the small cell coverage range to access the small base stations, the users outside the small cell coverage range can access the small base stations, the service range of a small cell can be enlarged without increasing the number of the small base stations.

Description

technical field [0001] The invention relates to the communication field, in particular to a user access method in a heterogeneous network where a macrocell and a small cell coexist. Background technique [0002] With the rapid development of wireless communication systems, the existing single network system can no longer meet the communication requirements of high speed, large capacity, and high quality of service. The next generation of wireless communication technology is developing towards the heterogeneous integration of multiple wireless networks. Heterogeneous network refers to the introduction of other communication methods within the coverage of macro base stations to strengthen the coverage of specific areas in a targeted manner to form a network structure with multi-layer coverage. It has flexible network construction and low maintenance costs, so it is popular received widespread attention. [0003] The introduction of small cells into a single macrocellular netw...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16H04W48/18H04W48/04H04W52/04
Inventor 余官定鲍鹏程殷锐
Owner ZHEJIANG UNIV
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