Method for cooperative computing offloading in F-RAN architecture

Abstract

The invention provides a method for cooperative computing unloading in an F-RAN architecture, and provides an F-RAN unloading scheme based on NOMA and an unloading method based on SCA, an interior point method and a coalition game so as to efficiently utilize computing resources of edge nodes in a network. According to the unloading scheme, a task user can unload a computing task to a main F-AP associated with the task user and an idle user with idle computing resources based on NOMA, and the main F-AP further unloads the computing task to other auxiliary F-APs based on a cooperative communication function between the F-APs. Meanwhile, under the condition of considering user tolerance time delay, a layered iterative algorithm is provided, the inner layer of the algorithm is formed by combining SCA and an interior point method to obtain an unloading scheme after user association is determined, the outer layer of the algorithm is user association optimization based on the coalition game theory, the total energy consumption of the system is minimized, and the system reliability is improved. Compared with a common unloading scheme and algorithm in the prior art, the method has the advantage that the total energy consumption of the system is remarkably improved.

Description

technical field [0001] The present invention belongs to the field of communication technology, and in particular relates to a method for collaborative computing offloading in an F-RAN architecture, specifically a NOMA (non-orthogonal multiple access)-based F-RAN (fog radio access networks) offloading scheme and an SCA-based (successive convex approximation), interior point method, and unloading methods for coalition games. Background technique [0002] In order to meet the critical delay requirements and reduce the pressure on the fronthaul link, the system architecture of F-RAN is proposed. The concept of F-RAN is developed from the fog computing proposed by Cisco. By moving some computing, storage and network functions from the cloud center to the edge of the network, the infrastructure in the radio access network (RAN) such as small Base stations, routers, etc. are converted into fog nodes with storage, communication, wireless signal processing and resource allocation ma...

AI Technical Summary

Problems solved by technology

The proposal of the F-RAN system architecture has led to the research on the direction of cooperative computing offloading, which allows a group of adjacent terminal devices and access nodes to jointly complete the computing offloading of computing-intensive and delay-sensitive tasks. Computing therefore poses a challenge to the current scarce spectrum resources

[0003] Under limited spectrum resources, task offloading based on OMA technology is difficult to complete within the time threshold in delay-sensitive scenarios, thus reducing offloading efficiency

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