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Relay-node-number selection algorithm based on interruption probability in cellular-cell downlink

A downlink and cellular cell technology, applied in the field of relay technology, can solve the problems of unsuitable transmission of high-speed data and multimedia services, low spectrum utilization rate, poor anti-interference ability, etc., to reduce the probability of interruption and improve the system capacity , the effect of improving the utilization rate

Inactive Publication Date: 2014-03-19
ZHENJIANG KUN QUAN ELECTRONICS TECH
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Problems solved by technology

Although the existing mobile communication network is constantly developing, there are still shortcomings such as small system capacity, low spectrum utilization rate, poor anti-interference ability, long link delay, and unsuitable for transmission of high-speed data and multimedia services.

Method used

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  • Relay-node-number selection algorithm based on interruption probability in cellular-cell downlink
  • Relay-node-number selection algorithm based on interruption probability in cellular-cell downlink
  • Relay-node-number selection algorithm based on interruption probability in cellular-cell downlink

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Embodiment Construction

[0026] The selection method and power allocation problem of the multi-user multi-relay optimal relay node number based on the outage probability in the cell downlink proposed by the present invention are described in detail as follows in conjunction with the accompanying drawings and the implementation process.

[0027] Such as figure 1 As shown, the system model of multi-user multi-relay in the cell downlink of the present invention, the specific selection of optimal relay node number and power allocation method includes the following steps:

[0028] Suppose there are K users and L relays in the cell;

[0029] Step 1: The base station and the user send pilot signals to all relays respectively. These two pilot signals are orthogonal to ensure that the relay can obtain channel state information from the base station to the relay and from the user to the relay without interference;

[0030] The transmission channel of the present invention adopts an orthogonal channel of two t...

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Abstract

The invention proposes a multi-user optimal-relay-node-number selection algorithm based on an interruption probability in a cellular-cell downlink and relates to a selection method of relay nodes and is used for solving a relay-node distribution problem, which a multi-user multi-relay mobile cellular network faces. Optimal configuration of the relay nodes is realized through minimizing of the interruption probability so that user service access quality is satisfied to the largest extent and at the same time, the number of the relay nodes is minimized. The relay-node-number selection algorithm based on the interruption probability in the cellular-cell downlink is capable of optimizing of the number of the relay nodes in the cellular-cell downlink based on two-hop relays so that a frequency-spectrum use method and power control use are optimized jointly. The relay-node-number selection algorithm is capable of ensuring downlink user services and minimizing the number of the used relay nodes at the same time so that network layout cost is reduced affectively. Therefore, the selection algorithm is capable of acquiring a comparatively large transmission capacity through the fewest relay nodes so that effective area coverage of user services of the cellular-cell downlink based on the two-hop relays is realized.

Description

technical field [0001] The invention relates to a selection method of a multi-user multi-relay relay node in mobile cellular communication, and a power distribution method, specifically to the relay technology. Background technique [0002] The main development goals of wireless mobile communication in the future are high speed, high bandwidth, high spectrum utilization, and the ability to provide a variety of new services. Although the existing mobile communication network is constantly developing, it still has the disadvantages of small system capacity, low spectrum utilization rate, poor anti-interference ability, long link delay, and is not suitable for transmitting high-speed data and multimedia services. [0003] In recent years, introducing Relay technology into traditional mobile cellular networks and combining it with other advanced technologies will greatly improve system performance. Introducing Relay technology into the future wireless cellular network communica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04W52/02H04W72/04
CPCY02D30/70
Inventor 徐晓声郭坤祺哈成涛王志鹏
Owner ZHENJIANG KUN QUAN ELECTRONICS TECH
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