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User access mode selecting method under cell heterogeneous network

An access mode and heterogeneous network technology, applied in the field of communication, can solve problems such as high cost and high power consumption, and achieve the effect of expanding the scope of services and benefiting user experience

Active Publication Date: 2014-04-16
ZHEJIANG UNIV
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Problems solved by technology

Therefore, in order to achieve the full coverage of small cells in the macro cellular network, a considerable number of small base stations are required, and the high-density layout of small cells in the cellular network will make the same-channel interference between small cells more serious, and the power consumption is high, and the cost high

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  • User access mode selecting method under cell heterogeneous network
  • User access mode selecting method under cell heterogeneous network
  • User access mode selecting method under cell heterogeneous network

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Embodiment Construction

[0076] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0077] The technical scenario of the user access mode selection method under the cellular heterogeneous network in this embodiment is as follows: the radius of the macro cell is R MB =500m; 15 communicating macrocell users and 6 non-overlapping small cells are deployed in a macrocell, and each small cell has 10 small cell users, of which 6 are idle small cell users and 1 standby Access users; the total number of small base stations in the cellular heterogeneous network is N=6; the path loss of the cellular communication link is 128.1+37.6log10(d[km]), the mean value of shadow fading is 0, and the variance is 10dB;

[0078] In the user access mode selection method under the cellular heterogeneous network of this embodiment, the user has three access modes, such as figure 1 As shown, they are small cell access mode, macro cell access mode and D2...

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Abstract

The invention discloses a user access mode selecting method under a cell heterogeneous network, and belongs to the field of communication. Users needing access under the cell heterogeneous network can select three access modes which are the macro cell access mode, the small cell access mode and the D2D relay access mode. The users needing access outside a small cell covering range can build D2D direct-connection communication with small cell users through the D2D relay access mode when meeting a certain condition, the small cell users serve as relays to have access to small base stations, and therefore service ranges of the small base stations are enlarged and user experience is enhanced. Meanwhile, the invention also provides the access mode selecting method and a relay selecting and channel and power distributing method under the D2D relay access mode, the problems of access mode selecting, relay selecting and channel and power distributing can be effectively solved, and energy efficiency of the heterogeneous network is improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for selecting a user access mode in a cellular heterogeneous network. 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] Introducing small cells into a single macrocellular network to form a cellula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22H04W48/20
CPCY02B60/50Y02D30/70
Inventor 余官定鲍鹏程殷锐陈琪美江玉环
Owner ZHEJIANG UNIV
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