Call admission control method

Abstract

The method includes steps: (1) receiving request of calling, base station controller (RNC) obtains existed service information of current access subzone; (2) determining whether causation of current calling request is reconfiguration of channel; if yes, executing (3); otherwise, executing (4); (3) determining whether requested access operation requires to raise quality of service of down going link; if yes, executing step (4); otherwise, accepting the calling request, and ending current processing; (4) based on the calling request, existed information of down going link of current access subzone and load threshold setup in advance, RNC determines whether down going link is able to accept the current calling; if yes, accepting the request; otherwise refusing the calling request. The invention discloses three methods for controlling call admittance. Through four methods provided by the invention, RNC controls admittance by using system resources for different calling requests.

Description

technical field [0001] The invention relates to a call control technology, in particular to a call admission control method applied to a base station controller (RNC) in a wideband code division multiple access (WCDMA) system. Background technique [0002] The WCDMA system is a cellular mobile communication system with advanced performance. The RNC, as the control core of the radio resource management of the WCDMA system, manages and dispatches the radio resources of the entire system. [0003] Among them, the power resource of the air interface is one of very important wireless resources. In the WCDMA system, when a new service is admitted, for the uplink, the total interference level received by the system, that is, the total received wideband power (RTWP) will increase; for the downlink, the downlink transmission of the base station Power, that is, carrier transmit power (TCP) will also increase. In an overloaded system, the increase of RTWP or TCP may lead to the decli...

AI Technical Summary

Problems solved by technology

[0008] In addition, the existing technology does not take into account the needs and service quality expectations of operators and users for different services, and sets the same admission control load threshold for all services, which will cause some low-priority services to affect high-priority services. business access

For example, for users, switching services and voice services usually have a higher priority. If the load thresholds of voice services and other services are set to the same value, the access of data services with large data volume fluctuations will affect the original Call quality of voice services or making new voice services inaccessible

[0009] To sum up, the existing call admission schemes cannot manage the system flexibly as a whole, cannot efficiently control different call requests, cannot guarantee the communication quality of high-priority services, and cannot make full use of the system's limited resources. wireless resources to meet the user's business needs

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