Up-admission control method for CDMA communication system

Abstract

This invention discloses an up admission control method in the CDMA communication system including: 1, setting a service to be a primary service, a base station pre-configures the equivalent user numbers of the primary service, other services, the maximum numbers of the primary service and an up interference threshold, 2, the base station receives the service call request to find out the configured equivalent and the maximum user numbers of the primary service, the up interference threshold and the current total interference of the local area, 3, if the up total interference of the local area is greater than the threshold, then it enters into step 6, otherwise, step 4, 4, if the sum of the current and the service equivalent user numbers are greater than the maximum of the primary service, then step 6 is done, otherwise step 5 is done, 5, receiving the request and refreshing the current numbers of the area to the sum of the two equivalent user numbers in step 4 then returning to step 2, 6, refusing the request to be fed back to step 2 and the base station asks for releasing said service and refreshes the current equivalent user numbers of the area.

Description

technical field [0001] The invention relates to an uplink admission control method in a Code Division Multiple Access (CDMA, Code Division Multiple Access) communication system. Background technique [0002] A notable feature of the CDMA system is that it is a self-interference system. In the uplink direction, for a specific user, the signals of other users are interference. When a new user accesses, the interference to the existing users in the system is increased. In order to maintain the call quality, under the effect of closed-loop power control, all users increase the transmission power, and the power rises. If the number of users accessing the system is not limited, in extreme cases, the power increase will cause all users to transmit at the maximum power, but still cannot reach the required signal-to-noise ratio threshold, and all users cannot make normal calls , the system is paralyzed. Therefore, the total number of users accessing the system must be limited to ke...

AI Technical Summary

Problems solved by technology

An obvious disadvantage of this method is that the amount of calculation of the matrix operation is large, which is not suitable for the real-time requirements of the communication system.

[0006] Obviously, the existing technology does not well solve the problem of how to effectively control the uplink access of new users in the CDMA communication system

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