Interference suppression based call admission control method of D2D communication system

A technology for call access control and communication systems, which is applied in the field of heterogeneous converged networks, and can solve problems such as complex resource allocation

Active Publication Date: 2015-05-06
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For D2D communication systems, the existence of multiple interferences makes resource allocation more complicated, involving interference between CUE and DUE and between DUE pairs

Method used

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  • Interference suppression based call admission control method of D2D communication system
  • Interference suppression based call admission control method of D2D communication system
  • Interference suppression based call admission control method of D2D communication system

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0044] The selection of the scene directly affects the performance of the call access control method. The setting of the scene and the setting of parameters will be analyzed in detail below.

[0045] 1. Classification and quantity of mobile terminals

[0046] In the D2D communication system, terminals are divided into two categories: traditional cellular network mobile terminals CUE and D2D mobile terminals DUE. DUEs exist in pairs, and a pair of DUEs includes a D2D tra...

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Abstract

The invention discloses an interference suppression based cell admission control method of a D2D communication system. A terminal of the D2D communication system comprises a honeycomb network terminal (CUE) and a D2D mobile terminal (DUE). The method comprises the steps of (1) initializing system parameters, including the signal-to-noise ratio threshold, the power of a D2D emission terminal, and the CUE signal strength received by a base station; (2) acquiring the quantity of DUE pairs in the network and the distance of the terminals; (3) updating the interference parameter value in the network, and calculating the radius of a protecting area; (4) determining whether the DTUE to be accessed to the network is in a CUE suppression area; if so, entering step 7; (5) determining whether all DUE meet the communication service quality requirement after new DUE pairs accesses the network; if not, entering step 7; (6) accessing new DUE pairs to the network, and updating the quantity of the new DUE; (7) finishing the method. With the adoption of the method, the extra interference can be effectively removed, the new call blocking rate can be reduced, the network capacity can be improved, outstanding performances are achieved, and the implementation is easily carried out.

Description

technical field [0001] The present invention relates to the field of heterogeneous fusion networks, in particular to a call access control method of a D2D communication system based on interference suppression. Background technique [0002] With the sharp increase in the demand for high-speed wireless data services, the demand for voice and data services is also increasing. The next generation of wireless networks requires new technologies to increase network capacity and improve frequency utilization. End-to-end communication (D2D) can effectively improve resource utilization for cellular networks. In D2D communication, the D2D mobile terminal (DUE) can share link resources with the cellular network mobile terminal (CUE), which effectively improves the system capacity. However, the resulting interference problem is also particularly significant, and there will be mutual interference between the CUE and the DUE. Currently, several methods exist to mitigate the additional i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16H04W48/02
Inventor 李旭杰张洪浪张文娜孙颖顾燕李建霓郭洁
Owner HOHAI UNIV
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