Resource allocation method of wireless virtual network in ofdma system

Abstract

The invention discloses a wireless virtual network resource allocation method in an OFDMA system, which mainly solves the problems that the existing resource allocation method has low real-time performance and cannot meet user service quality requirements. The technical solution is: the MAC layer virtual network integrates the user's business needs and makes a resource request to the physical layer; the physical layer establishes an objective function according to the resource request and channel statistical information, and maximizes it to obtain the channel allocation matrix; the channel allocation matrix Get the resource configuration information, and pass it to the MAC layer to establish and maximize the utility function, and get the resource allocation ratio of the user business flow; calculate the service delay according to the ratio, perform business flow access control, and recalculate the resource request amount; the physical layer and The MAC layers interact dynamically until the QoS constraints of the virtual network are satisfied. The invention can perform access control for multi-user and multi-service requirements in a single-cell OFDMA system, while ensuring the service quality and specific performance constraints of the system.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a wireless virtual network resource allocation method, which can be used for access control of multi-user and multi-service requirements in a single-cell OFDMA system. Background technique [0002] With the popularization of mobile terminals, the number and types of service requests are rapidly expanding and enriching, which greatly increases the pressure of various applications to compete for wireless resources. Not only do they have different resource requests, but they also have strict service quality requirements. Therefore, It is necessary to properly configure and manage limited radio resources. In order to solve this problem, wireless network virtualization came into being. Mobile network operators can use virtualization technology to control and manage their own resources more flexibly, and due to the unique nature of wireless channels, wireless network ...

AI Technical Summary

Problems solved by technology

[0003] Wireless resource virtualization technology greatly reduces network deployment and operation costs by abstracting and sharing infrastructure and wireless frequency band resources, and establishes multiple virtual networks on the infrastructure through virtualization, which can be operated and managed independently, enabling new achievements and Technology is more accessible to the network, but despite the great potential advantages of wireless virtualization, resource allocation in virtualization is still limited by dynamic allocation algorithms

Yi Jiangtao, Research on joint allocation algorithm of LTE resources based on cooperative game [D]. Xi'an: School of Communication Engineering, Xidian University, 2012. The ratio scheduling algorithm takes the maximum system capacity as the goal, and allocates resources to users with the best channel status, while users with poor channel status will not be allocated resources for a long time. Although the fairness between users is considered, it still cannot dynamically allocate resources according to the amount of resource requests of users, and cannot meet the flexible quality of service requirements.

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