Optimization wireless resource method based on time delay differentiated services and proportionality rate constraints

Abstract

The invention discloses an optimization wireless resource method based on time delay differentiated services and proportionality rate constraints. The method divides services into two types from a physical layer: a time Delay-Constraint (DC) type service and a Best-Effort (BE) type service. Specifically, the method classifies optimization resource distribution to a linearity problem. Through introducing time sharing parameters, an index-grade mixing integer program problem is converted into a convex problem for solving; a Lagrange differential is then solved on a result to obtain an optimum performance response of bandwidth, whether the result is reasonable is verified, if the result is not reasonable, a decision is modified forwards, and if the result is reasonable, other network distribution parameters are calculated. Generally speaking, the method provided by the invention overcomes the disadvantage of a conventional wireless resource management method that the fairness between service types and users are not taken into consideration, the diversified demands for quality of service (QoS) of different types of services can be satisfied, the maximization of a data transmission rate can be realized, and the system total data transmission rate is improved to the maximum.

Description

technical field [0001] The invention relates to the technical field of computer wireless communication, in particular to a method for optimizing wireless resources based on time-delay differentiated services and proportional rate constraints in a heterogeneous wireless network. Background technique [0002] With the continuous improvement of quality of service (QoS) requirements of broadband wireless networks in recent years, radio resource management (Radio Resource Management, RRM) has become the focus of research and development. Existing business types, such as voice transmission services that are very sensitive to delay, need to ensure a certain throughput; while some services (such as email and file download services) can tolerate short delays, so they adapt to variable transmission rate. Orthogonal frequency division multiple access (OFDMA) technology is an emerging air interface solution in broadband networks. Developing resource management strategies for heterogen...

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Problems solved by technology

The previous optimal resource allocation plan did not consider important factors such as business type and fairness between users, which led to the inefficient allocation and utilization of scarce wireless resources. In the existing resource allocation scheme, based on the bankruptcy strategy The proposed cooperative radio resource management (Joint RRM, JRRM) strategy takes into account the diversity of radio resources and seeks to efficiently allocate radio resources based on system load and user / service QoS requirements. However, the radio resource allocation mechanism (such as power and bandwidth ) is still facing great challenges in utilizing cooperative diversity technology and further meeting the diversified QoS requirements of different types of services

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