Congestion control for interworking between networks

摘要

A congestion indication is introduced to indicate the congestion status of the circuit-switched network to a packet-switched network, such as an LTE network. The congestion indication is transmitted from an interworking function in the circuit-switched network to the LTE network. The congestion indication and/or other congestion information is transmitted with a circuit services signaling message that is otherwise being sent. Piggy-backing the congestion information with other circuit services signaling messages reduces the amount of signaling over the LTE network.

主权项

1. A method of controlling access to a circuit-switched network by mobile terminals in a packet-switched network, said method comprising:
receiving a congestion indication indicative of a congestion status in the circuit-switched network from the circuit-switched network; subsequently receiving an access message from a mobile terminal in the packet-switched network attempting to access said circuit-switched network; and sending a persistence parameter to said mobile terminal responsive to said access message when said congestion indicator indicates that the circuit-switched network is congested, wherein the congestion indicator is stored in a mobile management entity in the packet-switched network, and wherein the persistence parameter controls a probability that the mobile terminal will continue or abort an access attempt.