US 2007/0183351 A1Published application

Method and apparatus for providing service in a multi-ran communication network

AssigneeMotorola, Inc.

InventorsShahab Sayeedi, Kris Martinovich

Life of this patent

Estimating the term…

Loading patent…

Abstract

To address the need for more resource efficient methods of providing service in multi-RAN communication systems (600), various embodiments are described for informing a cross-paging RAN that a targeted remote unit (601) is not accepting a service request, for informing a serving RAN that the targeted remote unit is accepting the service request, and for informing an IMS (IP Multimedia Subsystem) network (611) that the targeted remote unit is moving from the serving RAN to the cross-paging RAN (or simply moving to another RAN without being cross-paged). Thus, embodiments such as those described herein can enable multi-RAN communication systems to more quickly release unneeded resources, to reduce the amount of unnecessary paging, and to minimize cross-paging when an IMS core network is available to deliver voice over IP (VoIP) calls.

Claims20

Dependent claims

A method for providing service in a multi-RAN (radio access network) communication system, the method comprising:

receiving, by a first RAN, a request to page a remote unit for service to be provided from a second RAN;
paging by the first RAN the remote unit for the service, in response to the request;
performing at least one function from the group consisting of:
receiving, by the first RAN from the second RAN, an indication regarding the remote unit from the group consisting of:
an indication that the remote unit has accepted the service,
an indication of a move by the remote unit to the second RAN,
an indication that the remote unit has registered in the second RAN, and
an indication that the remote unit has been successfully acquired by the second RAN;
and
receiving, by the first RAN from the remote unit in response to the paging, a message indicating at least one remote unit response from the group consisting of:
the remote unit is leaving the first RAN,
an indication that the remote unit is moving to the second RAN,
the remote unit is deregistering with the first RAN,
the remote unit is registering with the second RAN,
the remote unit is accepting the service from the second RAN, and
the remote unit is not accepting the service from the second RAN;
when the first RAN receives from the remote unit a message indicating that the remote unit is not accepting the service, sending by the first RAN a message indicating that the remote unit is not accepting the service.

14 more elements

Dependencies are inferred from the claim text.