Admission control method for determining priority of resource allocation and related device

Abstract

The invention discloses an admission control method. The method comprises the following steps: receiving a request message for requesting admission of a service in the current admission control period; judging the type of service for admission which is requested by the request message; admitting non-real-time service of the request in case the type of the requested service for admission is of non-real-time service; determining admission priority of the requested real-time service in case the type of the requested service for admission is of real-time service; judging whether real-time service resources are available for the request based on the determined admission priority; and admitting the requested real-time service when a judgment result is that the real-time service resources are available for the request. Correspondingly, the invention further discloses an admission controller, a method for allocating resources for a real-time service and a device thereof, as well as a method for determining priority of resource allocation and a device thereof. The proposal can help meet various new requirements brought forward by next generation wireless communication system for admission control.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an admission control method and an admission controller, a method for determining resource allocation priorities and its device, and a method for allocating resources for real-time services and its device. Background technique [0002] The radio resource management (RRM, Radio Resource Management) subsystem is a very important module in the wireless network subsystem, and the call admission control (CAC, Call Admission Control) is an important part of RRM, and the call admission control module (CACM) can be based on According to the current wireless resources and load conditions of the cell and the call quality of service (QoS, Quality of Service), according to a certain algorithm, the load increase that may be generated by the new call request is predicted, and then the new call request is determined according to a certain access criterion. calls are allowed or re...

AI Technical Summary

Problems solved by technology

[0005] Scheme 1. The admission control scheme based on channel reservation, that is, to reserve a part of resources for handover users in advance. This scheme considers the performance of the call level, but does not consider the different QoS requirements of various services in the next generation wireless system and the QoS of the packet level. Require;

[0006] Scheme 2. The admission control scheme based on partial channel reservation, that is, according to the use of wireless resources, it is determined with a certain probability whether the call requesting user is accessed. This scheme cannot accurately judge the overload situation of the system, nor can it guarantee the QoS performance at the packet level ;

[0007] Solution 3, based on the estimated cooperative admission control scheme, that is, using information about the resource usage of adjacent cells to reserve some wireless resources for handover users, the disadvantage is the same as that of solution 1, and the system overhead is relatively large;

[0008] Solution 4. The admission control scheme based on the user's mobile information, that is, using the user's mobile information to reserve wireless resources for handover users. It is difficult to use this scheme in the system;

[0009] To sum up, the existing admission control schemes cannot meet the new requirements for admission control of the next generation wireless communication system based on OFDM technology. Users who switch over from neighboring cells) and users who initiate new access requests (that is, users who initiate new access requests in this cell); cannot support multiple service types and meet the QoS requirements of different service types; When the type brings temporary overload, continue to guarantee the service quality of the system; cannot meet the QoS requirements of the packet level and call level, etc., so that the capacity of the system cannot be guaranteed and improved under the premise of guaranteeing the quality of service

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