Admission control method and device for TD-SCDMA system

Abstract

The invention discloses an admission control method for a TD-SCDMA system. The method is applied to Node B of the TD-SCDMA system based on a distributed network, and comprises the following steps: judging whether uplink and downlink loads of a distributed unit of a cell allow to access new service; if the new service is allowed to be accessed, controlling the distributed unit to perform a normal random access process; and if the new service is not allowed to be accessed, controlling the distributed unit to block the normal random access process. Correspondingly, the invention also provides anadmission control device for the TD-SCDMA system. Therefore, the method and the device adopt the Node B to perform auxiliary admission control so as to improve the reliability of the TD-SCDMA system.

Description

Technical field [0001] The present invention relates to wireless communication technology, in particular to a method and device for admission control of a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system based on distributed networking. Background technique [0002] The maximum number of users simultaneously served in the TD-SCDMA system is limited by both the available codewords and the interference to the system. Therefore, when users make calls and handoffs, the network needs to perform admission control to confirm whether there are any Whether the resources allocated to the user and the new resources allocated to the user will have an irreversible impact on the stability of the network and the QoS (Quality of Service) of the established connection. The conventional admission control module is located in the RNC (Radio Network Controller). The RNC collects many aspects of cell load information from the NodeB base station. The admission control module e...

AI Technical Summary

Problems solved by technology

However, in the distributed networking mode of the TD-SCDMA system, it will become a challenge for the RNC to accurately and timely collect various parameters reflecting the uplink and downlink load parameters of the cell. The parameters need to reflect the load on each distribution point, so each parameter will be expanded into a parameter vector related to the distributed topology. RNC may not be able to obtain the complete parameter vector from NodeB by using the existing measurement interface

At the same time, because the RNC cannot easily obtain the topology information of the user access relative to the antenna distribution of the cell, it will also affect the RNC's access control.

[0004] In summary, the existing admission control technology based on distributed networking TD-SCDMA system obviously has inconvenience and defects in actual use, so it is necessary to improve it

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