Avoiding formation of a call loop resulting from handling of a mobile terminated call in parallel with a location update in a wireless communication network
First Claim
1. A method for preventing a call loop for a mobile terminated (MT) call to a mobile device (MD), the method comprising:
- using a processor and a memory for;
receiving, at a first mobility and call management entity (MCME) from a second MCME, a routing information request message associated with delivery of the MT call to the MD, the routing information request message comprising an indication of a gateway MCME for the MD; and
determining whether the gateway MCME for the MD that is indicated in the routing information request message identifies the first MCME.
4 Assignments
0 Petitions
Accused Products
Abstract
A call loop avoidance capability is provided for preventing formation of a call loop resulting from handling of a mobile terminated (MT) call in parallel with a location update for a mobile device (MD) in a wireless communication network. The call loop avoidance capability prevents formation of a call loop between an old mobility and call management entity (MCME) and a new MCME when delivery of an MT call to an MD is performed while the MD is in the process of moving from the old MCME to the new MCME using a location update procedure. An enhanced call routing procedure supports direct delivery of the MT call from the new MCME to the MD (rather than delivery of the MT call by the new MCME to the MD via the old MCME) in order to prevent formation of a call loop between the old MCME and the new MCME.
-
Citations
14 Claims
-
1. A method for preventing a call loop for a mobile terminated (MT) call to a mobile device (MD), the method comprising:
using a processor and a memory for; receiving, at a first mobility and call management entity (MCME) from a second MCME, a routing information request message associated with delivery of the MT call to the MD, the routing information request message comprising an indication of a gateway MCME for the MD; and determining whether the gateway MCME for the MD that is indicated in the routing information request message identifies the first MCME. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
8. A mobility and call management entity (MCME) configured for preventing a call loop for a mobile terminated (MT) call to a mobile device (MD), the MCME comprising:
a processor and a memory communicatively connected to the processor, the processor configured to; receive, at the MCME from a second MCME, a routing information request message associated with delivery of the MT call to the MD, the routing information request message comprising an indication of a gateway MCME for the MD; and determine whether the gateway MCME for the MD that is indicated in the routing information request message identifies the MCME. - View Dependent Claims (9, 10, 11, 12, 13, 14)
Specification