Restoration of mobile terminating CS services in case of failure of a core network entity in a mobile communication system
AssigneeAlcatel Lucent
InventorBruno Landais
Life of this patent
Estimating the term…
Abstract
In an embodiment, a method for restoration of MT (Mobile Terminating) CS services in case of failure of a PS Core Network CN entity, referred to as original CN entity, originally identified as to be contacted for a paging request towards a User Equipment UE for said MT CS services, in a mobile communication system, comprises: providing that an alternative CN entity is contacted instead of said original CN entity, and that said alternative CN entity is forced to accept said paging request even if said UE is unknown to said alternative CN entity.
Claims17
An apparatus comprising:
- at least one processor;
- and
- at least one memory including computer program code;
- the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform:
- detecting that a mobility management entity serving a user equipment is no longer in service, and
- sending, to one alternative mobility management entity, an SGs paging request with a restoration indicator to cause said alternative mobility management entity to accept and handle said SGs paging request regardless of the value of a mobility management entity-reset parameter, including a value of mobility management entity-reset parameter set to false, in the alternative mobility management entity if an international mobile subscriber identity associated to the user equipment is unknown to the alternative mobility management entity.
An apparatus comprising:
- at least one processor;
- and
- at least one memory including computer program code;
- the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform:
- determining if a SGs paging request is received with a restoration indicator for a mobile terminated circuit switched service for a user equipment;
- and
- if said SGs paging request is received with said restoration indicator, accept and handle said SGs paging request regardless of the value of a mobility management entity-reset parameter in the mobility management entity, including a value of mobility management entity-reset parameter set to false, if an international mobile subscriber identity associated to the user equipment is unknown to the mobility management entity.
A method, performed by one or more processors of a visitor location register, to generate a SG paging request for paging a user equipment for a mobile terminated circuit switched service, the method comprising:
- detecting that a mobility management entity serving said user equipment is no longer in service, and
- sending, to one alternative mobility management entity, an SGs paging request with a restoration indicator to cause said alternative mobility management entity to accept and handle said SGs paging request regardless of the value of a mobility management entity-reset parameter, including a value of mobility management entity-reset parameter set to false, in the alternative mobility management entity in response to an international mobile subscriber identity associated to the user equipment being unknown to the alternative mobility management entity.
A method, performed by one or more processors of a mobility management entity, to receive a SG paging request, the method comprising:
- determining if a SGs paging request is received with a restoration indicator for a mobile terminated circuit switched service for a user equipment;
- and
- in response to receiving the SGs paging request with said restoration indicator, accepting and handling said SGs paging request regardless of the value of a mobility management entity-reset parameter, including a value of mobility management entity-reset parameter set to false, in the mobility management entity in response to an international mobile subscriber identity associated to the user equipment being unknown to the mobility management entity.
Dependencies are inferred from the claim text.