Method by which PGW processes data for UE in wireless communication system, and apparatus therefor
AssigneeLG Electronics Inc.
InventorsLaeyoung Kim, Jaehyun Kim, Myungjune Youn, Dongsoo Kim
Life of this patent
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Abstract
One embodiment of the present invention relates to a method by which a packet data network gateway (PGW) processes data for an UE in a wireless communication system, the method comprising the steps of: receiving a tracking area identifier (TAI) list from a mobility management entity (MME); and receiving downlink data for the UE from a network, wherein the PGW buffers the downlink data when all of the tracking areas (TAs), which belong to the TAI list, are not included in the same serving gateway (SGW) service region.
Claims9
A method for processing data for a user equipment (UE) by a packet data network gateway (PGW) in a wireless communication system, the method comprising:
- receiving a tracking area identifier (TAI) list from a mobility management entity (MME);
- and
- receiving downlink data for the UE in an RRC (Radio Resource Control) idle mode from a network,
- wherein not all tracking areas (TAs) belonging to the TAI list are included in a same serving gateway (SGW) service area, the method further comprises:
- buffering the downlink data;
- and
- transmitting the downlink data to a first SGW based on the UE switching from the RRC idle mode to an RRC connected mode,
- wherein all the TAs belonging to the TAI list are included in the same SGW service area and the UE is in the RRC idle mode, the method further comprises transmitting the downlink data to the first SGW, and
- wherein the UE is located in a service area of the first SGW.
A packet data network gateway (PGW) for processing data for a user equipment (UE) in a wireless communication system, the PGW comprising:
- a transceiver;
- and
- a processor that:
- receives, through the transceiver, a tracking area identifier (TAI) list from an MME and downlink data for the UE in an RRC (Radio Resource Control) idle mode from a network,
- wherein not all tracking areas (TAs) belonging to the TAI list are included in a same serving gateway (SGW) service area, the processor further:
- buffers the downlink data, and
- transmits, through the transceiver, the downlink data to a first SGW based on the UE switching from the RRC idle mode to an RRC connected mode,
- wherein all the TAs belonging to the TAI list are included in the same SGW service area and the UE is in the RRC idle mode, the processor transmits, through the transceiver, the downlink data to the first SGW, and
- wherein the UE is located in a service area of the first SGW.
Dependencies are inferred from the claim text.