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Method and device for scheduling policy selection in heterogeneous network

A scheduling strategy and heterogeneous network technology, applied in the field of communications, can solve problems such as adjustment and poor non-real-time service performance, and achieve the effects of ensuring system throughput, improving system fairness and service QoS matching.

Active Publication Date: 2013-12-18
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The M-LWDF algorithm is particularly suitable for scheduling real-time services, but it is not adjusted according to the change of user tolerance delay urgency, and the performance of non-real-time services is poor

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  • Method and device for scheduling policy selection in heterogeneous network
  • Method and device for scheduling policy selection in heterogeneous network
  • Method and device for scheduling policy selection in heterogeneous network

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Embodiment Construction

[0031] The scheduling strategy in the existing heterogeneous network meets the performance requirements of the system to a certain extent, and compromises in fairness, efficiency, and service QoS, but there are problems in the following aspects:

[0032] First, the scheduling strategy in heterogeneous networks is a multi-objective optimization problem, where the key objectives include: fairness, efficiency and service QoS.

[0033]When considering fairness, the round robin algorithm is generally used as a benchmark. This algorithm cyclically schedules resources for each user. Theoretically, each user has the same probability of obtaining resources. are served, so the throughput of the system is usually not high. The maximum carrier-to-interference ratio scheduling algorithm is the opposite. It only selects the user with the largest carrier-to-interference ratio as the scheduling object each time, that is, the base station always serves the user with the best channel quality, ...

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Abstract

The invention provides a method and device for scheduling policy selection in a heterogeneous network. An m*3 matrix is established, each line of the matrix represents a scheduling request, the first column of the matrix is fairness factors, the second column of the matrix is efficiency factors, and the third column of the matrix is matching factors; the established matrix is normalized; the normalized matrix is weighted according to a weight vector so that a weighting matrix can be obtained; a positive ideal solution and a negative ideal solution are determined according to the weighting matrix; a positive ideal distance and a negative ideal distance are calculated; relative proximity is calculated according to the positive ideal distance and the negative ideal distance; sequencing is conducted according to the relative proximity, a scheduling sequence is determined, and scheduling is conducted according to the scheduling sequence. According to the current network capacity situation, fairness, efficiency and service QoS are comprehensively considered, scheduling selection is conducted, the throughput capacity of a system is guaranteed, and meanwhile the fairness of the system and the matching performance of service QoS are improved.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a method and a device for selecting a scheduling policy in a heterogeneous network. Background technique [0002] Wireless communication is facing many challenges such as increasing business demands of various types, scarcity of wireless network resources, and user requirements for service quality. In the process of network development, due to the compatibility with the original network technology, in the future wireless network system, the original network will not be eliminated due to the research of new technology, but will coexist with the wireless network of the new technology. Therefore, the future wireless network is a complex heterogeneous network based on many different types of wireless access technologies. The heterogeneous network environment makes some technologies in traditional wireless networks no longer applicable. [0003] Scheduling technology is one of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
Inventor 张英海胡畔叶进王犇王卫东
Owner BEIJING UNIV OF POSTS & TELECOMM
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