Discrete speed cross-layer power distribution method based on mobile multicast system

A distribution method, discrete rate technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as less research

Inactive Publication Date: 2009-07-22
SOUTHEAST UNIV
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Problems solved by technology

The above studies are all aimed at unicast transmission system, and there are few related studies on the power allocation of multicast system

Method used

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  • Discrete speed cross-layer power distribution method based on mobile multicast system
  • Discrete speed cross-layer power distribution method based on mobile multicast system
  • Discrete speed cross-layer power distribution method based on mobile multicast system

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Embodiment Construction

[0026] The present invention proposes a discrete rate cross-layer power allocation method suitable for mobile multicast systems, and the specific implementation steps of the method are:

[0027] Step 1: The base station reads the queue state information of each service in the data link layer, and obtains the channel state information fed back by the users of the corresponding multicast group of each service;

[0028] Step 2: The system performs cross-layer power allocation by using an improved genetic algorithm according to the queue state information and channel state information of each multicast service.

[0029] In the above discrete rate cross-layer power allocation method applicable to mobile multicast systems, the queue state information of each service in the first step refers to the tth scheduling cycle service S 1 , S 2 ,...,S N The buffer size u at the base station 1 (t), u 2 (t),...,u N (t), the corresponding multicast group channel state information of each s...

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Abstract

A discrete speed cross-layer power distribution method which is suitable for mobile multicast system relates to a cross-layer power distribution method which is suitable for multiple services of mobile multicast system of single cell. In the mobile multicast system, each service requires to be allocated with appropriate power for completing the service transmission from point to multiple points. The method firstly obtains the queue state information of data link layer and channel state information of physical layer supposing that the base station only uses definite discrete transmission rate. Then an improved genetic algorithm is applied for optimizing the throughput coefficient of system and fairness coefficient of system thereby executing cross-layer power allocation. The hypothesis of discrete transmission rate more accords with the actual system. The multicast system can effectively increase the system queue time delay performance, system throughput performance and system fairness performance when the cross-layer power distribution method according to the invention is adopted.

Description

technical field [0001] The invention relates to an adaptive cross-layer power allocation method suitable for a mobile multicast system, and belongs to the field of wireless resource management in mobile communication. technical background [0002] In recent years, the rapid development of wireless multimedia services has greatly improved the reliability and effectiveness of communication system transmission. Orthogonal Frequency Division Multiple Access (OFDM) is recognized as the first because of its high spectrum utilization and anti-multipath fading. The third generation mobile communication system (3G) long-term evolution (LTE) standard and the core technology of the fourth generation mobile communication system (4G). In the OFDM system, in order to improve the utilization of wireless resources, mobile users with the same service requirements in the same cell can use the same sub-channel to receive the downlink service transmitted by the base station, which forms multica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/18H04W72/04
Inventor 唐苏文陈明
Owner SOUTHEAST UNIV
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