Admission control method for ultra-high-speed wireless local area network based on channel reservation

Abstract

The invention discloses an admission control method of an ultra-high-speed wireless local area network based on channel reservation. The method of the invention considers the fairness between the same type of service flows, that is, the release degree between all the same type of service flows is Under the same conditions, the bandwidth is released according to the corresponding algorithm to achieve high channel utilization and reduce the overall HCDP of the system; at the same time, in order to distinguish between new services and handover services, different release thresholds are set for bandwidth release, and the handover service threshold is higher than The threshold of the new business, and then ensure that the switching business has a higher access priority than the new business, and finally allow more business to be accepted under the premise of ensuring the normal transmission of the existing business flow.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to an admission control method of an ultra-high-speed wireless local area network based on channel reservation. Background technique [0002] Admission control plays a pivotal role in radio resource management. It is an important strategy to prevent system overload and ensure user QoS (Quality of Service, Quality of Service), and it has unusual significance for maintaining system stability and efficiency. In wireless networks, it is more and more challenging to implement admission control because it needs to reduce the loss probability of handover calls and the blocking probability of new calls, and at the same time meet the QoS requirements of different types of services. Radio admission control policy is the method used to provide admission decision for a newly arrived call. If the wireless network bandwidth resources are sufficient, then as many servic...

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Problems solved by technology

[0024] Some of the existing admission control methods are based on cost and revenue functions. The biggest difficulty of this type of admission control algorithm based on optimization problems is the design of revenue and cost functions, and the computational complexity is also very high, which limits this type of admission control algorithm. Applications in real networks; some are based on certain business scenarios, such as a certain VoIP service admission control algorithm adopted in the scenario where a large number of Internet calls occur, to achieve better VoIP services and improve system utilization It is precisely because of its strong pertinence that the use of this strategy is very small; there is also an admission control strategy based on multi-services, which releases bandwidth step by step according to the priority level of each service, although it can also achieve a good Access capability, but does not take into account the fairness between services

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