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Relay selecting and power distribution method for double bounce honeycomb system

A technology of a cellular system and an allocation method, which is applied in the fields of relay selection and power allocation, can solve the problems of low utilization of system resources, aggravated network signaling load, and increased computational complexity, etc., and achieves improved transmission quality and high performance-to-cost ratio. , the effect of reducing implementation complexity and network signaling load

Inactive Publication Date: 2005-03-02
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

From the perspective of theoretical analysis, SIR-based adaptive power allocation (SIR_OPA) can maximize the instantaneous channel capacity, but because it introduces a large number of power allocation calculations in the selection process of RS, it greatly increases the complexity of the operation , aggravating the network signaling load, so the realizability is low
Other algorithms, such as the PL-based average power allocation algorithm (PL_UPA) and the SIR-based average power allocation algorithm (SIR_UPA), cannot adaptively meet the user's business needs due to the equal power sharing, so the system resource utilization rate is low

Method used

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  • Relay selecting and power distribution method for double bounce honeycomb system
  • Relay selecting and power distribution method for double bounce honeycomb system
  • Relay selecting and power distribution method for double bounce honeycomb system

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Embodiment Construction

[0021] Combine below figure 1 The relay station selection and adaptive power allocation method of the present invention will be described.

[0022] In the first step, according to the requirements of network planning, in the cellular system, the base station is the main control center, and N relay stations (RS) are set in its service area. These relay stations are located around the base station, and the relay stations of this cell serve the Users connected to this cell.

[0023] According to the different processing methods of the relay station for the received signal, it is divided into regenerative relay station (RRS) and non-regenerative relay station (NRRS), in which RRS decodes and reconstructs the received signal before forwarding, and NRRS amplifies the received signal before forwarding .

[0024] The second step is to collect basic information such as the location, working mode, and power limit of these RSs, and transmit the initialization parameters of these RSs to...

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Abstract

This invention discloses a relay selection and power distribution method used in a two-hop cellular system including setting multiple relay stations in the said cellular system, initializing their working parameters and getting path information from the base station to the users according to user information combining with the working parameters of the relay stations, selecting a relay station with the least two hop path loss as a service one for each user and detecting the multi-area system interference of communication chains and utilizing adaptive power distribution method to design the powers of the signal emit end and the selected service relay stations.

Description

technical field [0001] The invention relates to a relay selection and power allocation method suitable for a two-hop cellular system. Background technique [0002] The future wireless communication system will be committed to developing multiple services with higher rates and greater dynamic range, while expanding network coverage, improving spectrum efficiency, and increasing system robustness. In the non-relay system of the cellular network, the power allocation is only completed at the signal sending end. Through the detection of channel information, the adaptive adjustment of the transmitting power at the source end can be completed to meet the quality of service (QoS) indicators of different users. Since the communication of the non-relay system of the cellular network is directly established between the base station (BS) and the user, there is no problem of relay station (RS) selection, and accordingly there is no need for adaptive power between the signal sending end ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/02H04B7/005H04B7/145H04W88/08
Inventor 张平张静美王莹邵春菊
Owner BEIJING UNIV OF POSTS & TELECOMM
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