Voice over LTE via generic access handover (HO) apparatus and method
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMagnus Hallenstål, Göran Rune, Jari Vikberg, Häkan Axelsson, Thomas Johansson, Tomas Nylander
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Abstract
A method and system wherein a Voice over LTE via Generic Access (VoLGA) Access Network Controller (VANC)1 upon receiving a REGISTER and REGISTER UPDATE message from the UE1 notifies a Hand Over Selection Function node (HOSF) that a user equipment (UE) is registered in the VANC. This will only be done if the HOSF has not theretofore been notified.
Claims14
A method of facilitating a handover (HO) of a user equipment (UE) in a wireless system, comprising the steps of:
- triggering, by a Long Term Evolution (LTE) Attachment or Tracking Area Update (TAU), a UE to start a REGISTER or REGISTER UPDATE procedure;
- sending the REGISTER or REGISTER UPDATE to a Voice over LTE Generic Access (VoLGA) Access Network Controller (VANC);
- checking, by the VANC, upon receiving the REGISTER or REGISTER UPDATE, if a plurality of LTE HO selection functions (HOSFs) have theretofore been notified that the UE is registered to the VANC, and if not, then sending, by the VANC, data with a VANC name/address and an International Mobile Subscriber Identity (IMSI) of the UE, all in parallel, to the plurality of LTE HOSFs;
- and
- acknowledging, by each of the plurality of LTE HOSFs, receipt of the data with a response.
A system for facilitating the handover (HO) of a user equipment (UE), comprising:
- a node operable to trigger, by a Long Term Evolution (LTE) Attachment or Tracking Area Update (TAU), a UE to start a REGISTER or REGISTER UPDATE procedure;
- a UE operable to send the REGISTER or REGISTER UPDATE to a Voice over LTE Generic Access (VoLGA) Access Network Controller (VANC);
- the VANC operable to check upon receiving the REGISTER or REGISTER. UPDATE, if a plurality of LTE HO selection functions (HOSFs) have theretofore been notified that the UE is registered to the VANC, and if not, then sending, by the VANC, data with a VANC name/address and an International Mobile Subscriber Identity (IMSI) of the UE, all in parallel, to the plurality of LTE HOSFs;
- and
- the plurality of LTE HOSFs operable to acknowledge receipt of the data with a response.
Dependencies are inferred from the claim text.