Optimal radio resource method based on time-delay differentiated services and proportional rate constraints

Abstract

The present invention discloses a method for optimizing wireless resources based on time-delay differentiated services and proportional rate constraints. The method divides services into two types from the physical layer: delay-constrained (Delay-Constraint, DC) services and best-effort For the type (Best-Effort, BE) business; specifically, the present invention plans the optimal resource allocation into a linear problem, and converts the exponential mixed integer programming problem into a convex problem by introducing a time-sharing parameter to solve; Lagrangian differentiation obtains the best performance response of the bandwidth, and verifies whether the result is reasonable, and if unreasonable, then revises the decision forward; if reasonable, then calculates other network allocation parameters; in general, the present invention overcomes the existing wireless The resource management method does not consider the shortcomings of business types and fairness between users, and meets the diverse requirements of different types of services for quality of service (QoS), maximizes the data transmission rate, and maximizes the total system data. Transmission rate.

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...

AI Technical Summary

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 effectively 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 huge challenges in utilizing cooperative diversity technology and further meeting the diversified QoS requirements of different types of services

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