Cross-layer Scheduling and Mapping Method of Wireless Virtual Network Resources Based on Queuing Theory

Abstract

The invention discloses a wireless virtual network resource cross-layer scheduling and mapping method based on queuing theory, including: 1. In the queue of service requests, rearrange the queues according to the time urgency and real-time request, and enter the mapping stage; 2. 1. Prioritize resource blocks with the best channel status according to contract requirements and user satisfaction; 3. For service requests that do not meet the requirements, select resource blocks with better channel status again, and repeat the above process until all business requests The request meets the requirements; 4. Solve the maximum overall network rate and the resource utilization rate of the underlying network through a convex optimization problem to complete the resource mapping process. The invention utilizes the queuing theory to combine the time quota and business type of the service request. The mapping process adopts an iterative method, which can dynamically respond to the resource block channel state, and overcomes the low flexibility of the traditional static algorithm allocation and the low utilization rate of physical resources. And other issues.

Description

technical field [0001] The invention belongs to the field of service scheduling and virtual resource mapping in wireless communication systems, in particular to a method for cross-layer scheduling and mapping of wireless virtual network resources based on queuing theory. technical background [0002] Network Virtualization (Network Virtualization) technology refers to the use of abstraction, allocation and isolation mechanisms to realize node and link virtualization, and build a diverse virtual network that coexists but is isolated from each other by sharing the underlying physical resources. The virtual resource request implements reasonable configuration and management of physical resources. Network virtualization technology not only solves the "rigidity" problem of the Internet and the controversy in the future network architecture, but also provides an experimental platform and technical support for future network demonstrations, becoming the key core of the continuous e...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the prior art, to provide a wireless virtual network resource cross-layer scheduling mapping method based on queuing theory, using queuing theory combined with the time quota of service requests and related parameters of business types, the mapping process is simple and easy to use The easy iterative calculation method can dynamically predict the channel state to change the allocation strategy, which effectively overcomes the traditional static algorithm that makes allocation less flexible, poor adaptability, and low utilization of underlying physical resources and usually accompanied by physical nodes. Or the problem that the load of the physical link is too high, improve the performance of the overall network

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