Association update from a service support node to a pool of mobile switching centers
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsHakan Sture Magnus Svensson, Frode Bjelland
Life of this patent
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Abstract
The invention relates to an update of an association (Gs) from a serving GPRS support node (SGSN) to a mobile switching center (MSC1, . . . , MSCn) in a pool (12) of mobile switching centers. After receipt of a routing area update from a mobile station (MS), there follows a detection of a new assignment between the mobile unit (MS) to a mobile switching center (MSC) in the pool (12) of mobile switching centers. After detection of a new assignment, there follows the initialization of an association update from a serving GPRS support node to a new mobile switching center in the pool of mobile switching centers (12).
Claims12
A method of updating an association for a mobile unit from a service support node supporting packet switched services to a mobile switching center in a pool of mobile switching centers supporting circuit switched services, comprising the steps:
- receiving a routing area update at the service support node from a mobile unit being supported by the service support node;
- detecting a new assignment of the mobile unit to a mobile switching center in the pool of mobile switching centers after receipt of the routing area update, wherein said step of detecting an assignment of the mobile unit to a mobile switching center in the pool of mobile switching centers comprises the step of mapping a unique identification of the mobile unit to a mobile switching center in the pool of mobile switching centers according to a pre-specified algorithm, wherein said pre-specified algorithm maps the unique identification of the mobile unit into an index for access to a table storing a relation between the index and a mobile switching center in the pool of the mobile switching centers providing services to the mobile unit;
- and
- initiating an association update from the service support node to the mobile switching center assigned to the mobile unit after receipt of the routing area update.
A service support node supporting packet switched services and being associated with a mobile switching center in a pool of mobile switching centers supporting circuit switched services, comprising:
- an interface unit adapted to receive a routing area update at the service support node from a mobile unit being supported by the service support node;
- and
- a processing unit (74) adapted to:
- detect a new assignment of the mobile unit to a mobile switching center in the pool of mobile switching centers after receipt of the routing area update, said assignment being detected by running a pre-specified algorithm, wherein the pre-specified algorithm relies on a unique identification of the mobile unit;
- map the unique identification to a mobile switching center in the pool of mobile switching centers, wherein the unique identification of the mobile unit is mapped into an index for access to a table storing a relation between the index and a mobile switching center in the pool of mobile switching centers providing services to the mobile unit;
- and
- initiate an association update from the service support node to the mobile switching center assigned to the mobile unit after receipt of the routing area update.
Dependencies are inferred from the claim text.