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An Adaptive Cooperative Multicast Method and System Based on Optimal Relay Selection

A cooperative multicast and adaptive technology, applied in broadcast service distribution, advanced technology, power management and other directions, can solve the problem of lack of optimization of the number of relays

Active Publication Date: 2016-08-10
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since its concern is not energy consumption, but throughput, in order to maximize throughput, this patent application selects all successful mobile terminal users as a cooperation set to participate in the second stage of cooperation, and lacks the number of relays optimization
In addition, this method does not necessarily guarantee the coverage of a fixed-rate multicast service.

Method used

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  • An Adaptive Cooperative Multicast Method and System Based on Optimal Relay Selection
  • An Adaptive Cooperative Multicast Method and System Based on Optimal Relay Selection
  • An Adaptive Cooperative Multicast Method and System Based on Optimal Relay Selection

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Embodiment Construction

[0049] see figure 1 and figure 2 , figure 1 It is a flowchart of a method on the base station 1 side according to an embodiment of the present invention, figure 2 It is a flow chart of a method at the terminal side of the mobile terminal user 2 according to an embodiment of the present invention. The adaptive cooperative multicast method based on optimal relay selection of the present invention includes:

[0050] Step 100, the step of obtaining the number of mobile terminal users 2 in the cell, which is used to count and count the mobile terminal users 2 receiving the corresponding multicast service in the cell;

[0051] Step 200, the step of judging the number of mobile terminal users in the cell to decide to adopt the corresponding multicast mode;

[0052] Wherein, in the step of judging the number of mobile terminal users in the cell to decide to adopt the corresponding multicast mode, further include:

[0053] Step 201, when the number N of mobile terminal users 2 i...

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Abstract

The invention provides an optimization relay selection based adaptive collaborative multicast method and system. The method includes the steps of firstly, acquiring the number of cell users for counting statistics on mobile terminal users receiving corresponding multicast services in a cell, and secondly, judging the number of the mobile terminal users in the cell to decide to adopt corresponding multi-cast modes; the second step further includes: when the number N of the mobile terminal users in the cell is smaller than a set threshold value N*, a base station provides communication services in a traditional multicast mode; when the number of the mobile terminal users in the cell is larger than or equal to the threshold value N*, the base station provides communication services in a relay optimization selection based two-stage multicast transmission mode, wherein N* is the number of mobile terminal users of divisional two-stage collaborative multicast. The invention further provides the base station and a mobile terminal used for the adaptive collaborative multicast system.

Description

technical field [0001] The present invention relates to a broadband wireless communication method and system, in particular to an adaptive cooperative multicast method and system based on optimal relay selection for cooperative multicast communication in broadband wireless communication, a base station and a mobile terminal thereof. Background technique [0002] In wireless communication, multicast service is an efficient communication transmission method. The base station (BS) uses a certain power P BS and data rate R one Send data to the users in the cell, and the mobile terminal users in the cell receive the signal from the base station, if the received signal-to-noise ratio (SNR) is greater than the given decoding data (rate R one data) required signal-to-noise ratio SNR one , where R one =Blog 2 (1+SNR one ), B is the system bandwidth. Then the mobile terminal user can successfully receive the data from the base station; if the signal-to-noise ratio received by a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W52/02
CPCY02D30/70
Inventor 周一青刘航焦惠芳田霖黄伊石晶林
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI