Handling PLMN Prioritization
AssigneeApple Inc.
InventorsRoland GRUBER, Deepak DASH, Nitin KUPPELUR
Life of this patent
Estimating the term…
Abstract
A user equipment (UE) transmits a registration request message to a first public land mobile network (PLMN), wherein the first PLMN is a roaming PLMN, receives a registration accept message from the first PLMN, determines that the registration accept message includes a manipulated steering of roaming (SoR) container or does not include a SoR container, wherein the SoR container is configured by a home PLMN (HPLMN) of the UE and transmitted to the first PLMN from the HPLMN, determines that the registration accept message includes an indication that the first PLMN does not support voice over packet switching (VoPS) and adds the first PLMN to a first list of PLMNs in which voice service is not possible in an N1 mode.
Claims21
A user equipment (UE), comprising:
- a transceiver configured to connect to a plurality of networks;
- and
- a processor communicatively coupled to the transceiver and configured to perform operations comprising:
- transmitting a registration request message to a first public land mobile network (PLMN), wherein the first PLMN is a roaming PLMN;
- receiving a registration accept message from the first PLMN;
- determining that the registration accept message includes a manipulated steering of roaming (SoR) container or does not include a SoR container, wherein the SoR container is configured by a home PLMN (HPLMN) of the UE and transmitted to the first PLMN from the HPLMN;
- determining that the registration accept message includes an indication that the first PLMN does not support voice over packet switching (VoPS);
- and
- adding the first PLMN to a first list of PLMNs in which voice service is not possible in an N1 mode.
A processor of a user equipment (UE) configured to perform operations comprising:
- transmitting a registration request message to a first public land mobile network (PLMN), wherein the first PLMN is a roaming PLMN;
- receiving a registration accept message from the first PLMN;
- determining that the registration accept message includes a manipulated steering of roaming (SoR) container or does not include a SoR container, wherein the SoR container is configured by a home PLMN (HPLMN) of the UE and transmitted to the first PLMN from the HPLMN;
- determining that the registration accept message includes an indication that the first PLMN does not support voice over packet switching (VoPS);
- and
- adding the first PLMN to a first list of PLMNs in which voice service is not possible in an N1 mode.
A method performed by a user equipment (UE), comprising:
- transmitting a registration request message to a first public land mobile network (PLMN), wherein the first PLMN is a roaming PLMN;
- receiving a registration accept message from the first PLMN;
- determining that the registration accept message includes a manipulated steering of roaming (SoR) container or does not include a SoR container, wherein the SoR container is configured by a home PLMN (HPLMN) of the UE and transmitted to the first PLMN from the HPLMN;
- determining that the registration accept message includes an indication that the first PLMN does not support voice over packet switching (VoPS);
- and
- adding the first PLMN to a first list of PLMNs in which voice service is not possible in an N1 mode.
Dependencies are inferred from the claim text.