Throttling schemes for location updating traffic in personal communications systems

The delayed location updating (DLU), oc-likelihood location updating (OALU) and delayed-(alpha)-likelihood location updating (D-oALU) schemes for throttling network-level registration traffic in personal communication network are proposed. The operational details of the proposed throttling schemes are described. The performance of the throttling schemes is evaluated analytically using the metrics, of network-level registration delay, network-level registration load, and the probability that an incoming call cannot be delivered to an MS because its exact location is not known to the network. Numerical results are presented from which it is concluded that the DLU scheme provides up to 80% reduction in networklevel registration load compared to when there is no throttling. The results are useful for efficient operation of personal communication networks.