Multi-cell interference coordination power-distribution method for mobile multi-casting system

A technology of interference coordination and allocation method, applied in broadcast service allocation, power management, network planning and other directions, can solve the problems of not considering inter-cell interference, not realizing power coordination and allocation, etc., to achieve the effect of simple steps

Inactive Publication Date: 2009-08-26
SOUTHEAST UNIV
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Problems solved by technology

The above studies either did not consider inter-cell interference, or directly regard

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  • Multi-cell interference coordination power-distribution method for mobile multi-casting system
  • Multi-cell interference coordination power-distribution method for mobile multi-casting system
  • Multi-cell interference coordination power-distribution method for mobile multi-casting system

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Embodiment Construction

[0015] The present invention proposes a multi-cell interference coordination power allocation method suitable for a mobile multicast system, and the specific implementation steps of the method are as follows:

[0016] The first step: let the number of iterations mark t=0, let the power distribution vector P t = ( P 1 max , P 2 max , · · · , P N max ) , Initialize the pricing factor ω of each business 1 , ω 2 ,...,ω N , the initialization algorithm iteration accuracy θ, where N represents the number of cells using a sub-channel of the same frequency, and the multicast service using this sub-channel in the nth cell is S n , subscri...

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Abstract

The invention relates to a multi-cell interference coordination power-distribution method for a mobile multi-casting system, in particular to a power-distribution method for a multi-cell mobile multi-casting system among multiple services. In each dispatching cycle of the mobile multi-casting system, proper power is needed to be distributed for each service, so as to finish point to multi-point business transmission; a non-cooperative game is introduced to the multi-cell power distribution of the multi-casting system, and a multi-cell multi-casting system power-distribution model is built by taking a maximum system throughput as a target, and the Nash equilibrium solution of the model is proved to be optimal Pareto, the existence and uniqueness of the Nash equilibrium is discussed, and a simple distributed iterative algorithm is obtained. On the premise of not reducing the system throughput, the transmission power of each service in the power-distribution method provided by the invention is reduced along with the increasing of the pricing factor; the power-distribution method can effectively coordinate the same frequency interference among cells, improves the system throughput and saves the transmission power of a base station.

Description

technical field [0001] The invention relates to a multi-cell interference coordination power allocation method suitable for a mobile multicast system, and belongs to the field of wireless resource management in mobile communication. technical background [0002] With the continuous development of network technology, especially the increase in the demand for multimedia applications, the mobile multicast system using Orthogonal Frequency Division Multiplexing (OFDM) technology can better alleviate the high data rate and increasingly tense demands of future communication systems. The contradiction between wireless resources plays an increasingly important role in modern communication. In an OFDM multicast system, due to the existence of co-channel interference between cells, the power allocation between services transmitted by different cells using the same sub-channel affects each other. How to coordinate and allocate the transmission power of various services has a great impa...

Claims

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Application Information

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IPC IPC(8): H04W4/06H04W16/04H04W52/20H04W52/24
CPCY02B60/50
Inventor 唐苏文陈明
Owner SOUTHEAST UNIV
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