User equipment, control, and communication control method apparatus

Patent metadata

Field	Value
Publication number	US-2021136840-A1
Application number	US-201917045643-A
Country	US
Kind code	A1
Filing date	Apr 9, 2019
Priority date	Apr 9, 2018
Publication date	May 6, 2021
Grant date	—

Abstract

Provided is a communication unit configured to allow a function for CIoT to be used even in a 5GS that supports a network-initiated configuration update procedure and a plurality of types of session and service continuities. Further provided is a communication unit configured to appropriately manage, by a user equipment, connection established between the user equipment and a network even in a case that a network-initiated change of a state of the user equipment has been performed. Thereby, the communication unit for implementing the function for CIoT in the 5GS and the communication unit for implementing a network-initiated procedure of changing the state of the user equipment are provided.

First claim

What is claimed is:

1 . A user equipment (UE) comprising:
a controller; a transmission and/or reception unit; and a storage unit, wherein: in a state where the storage unit has stored first local area data network (LADN) information, and further the controller has established a protocol data unit (PDU) session for LADN based on the first LADN information, the transmission and/or reception unit receives, from a core network, a configuration update command message including information A and information B, and the controller invalidates the first LADN information stored in the storage unit, stores the information A in the storage unit, validates the information A stored in the storage unit, and initiates a registration procedure, in the registration procedure, the transmission and/or reception unit transmits a registration request message including information C to the core network, and the controller establishes, with the core network, synchronization of PDU session state including the PDU session, and releases the PDU session, based on the synchronization of the PDU session state, the information A is second LADN information, the information B is information indicating a request to perform the registration procedure, the information C is information indicating the PDU session state, and the first LADN information is information different from the second LADN information.

2 . The UE according to claim 1 , wherein:
in the registration procedure performed before establishment of the PDU session, the transmission and/or reception unit receives a first registration accept message including information D from the core network, the information D being the first LADN information, and the controller stores the information D in the storage unit.

3 . A control apparatus comprising:
a controller:
a transmission and/or reception unit; and
a storage unit, wherein:
in a state where a user equipment (UE) has stored first local area data network (LADN) information and has further established a protocol data unit (PDU) session for LADN based on the first LADN information,
the transmission and/or reception unit
transmits, to the UE, a configuration update command message including information A and information B and
receives a registration request message including information C from the UE, and
the controller
establishes synchronization of PDU session state including the PDU session, based on reception of the registration request message, and
releases the PDU session, based on the synchronization of the PDU session state,
the information A is second LADN information,
the information B is information indicating a request to perform a registration procedure,
the information C is information indicating the PDU session state, and
the first LADN information is information different from the second LADN information.

4 . A communication control method for a user equipment (UE), the communication control method comprising:
storing first local area data network (LADN) information; establishing a protocol data unit (PDU) session for LADN based on the first LADN information; receiving, from a core network, a configuration update command message including information A and information B; invalidating the first LADN stored; storing the information A; validating the information B stored in the storing; initiating a registration procedure; and in the registration procedure transmitting a registration request message including information C to the core network, establishing, with the core network, synchronization of PDU session state including the PDU session, and releasing the PDU session, based on the synchronization of the PDU session state, wherein the information A is second LADN information, the information B is information indicating a request to perform the registration procedure, the information C is information indicating the PDU session state, and the first LADN information is information different from the second LADN information.

5 . The communication control method according to claim 4 , further comprising:
in a registration procedure performed before establishment of the PDU session, receiving a first registration accept message including information D from the core network, the information D being the first LADN information, and storing the information D.

6 . A communication control method for a control apparatus, the communication control method comprising:
transmitting, to a user equipment (UE), first local area data network (LADN) information; establishing a PDU session for LADN based on the first LADN information; transmitting, to the UE, a configuration update command message including information A and information B; receiving, from the UE, a registration request message including information C; establishing synchronization of PDU session state including the PDU session, based on reception of the registration request message; and releasing the PDU session, based on the synchronization of the PDU session state, wherein the information A is second LADN information, the information B is information indicating a request to perform a registration procedure, the information C is information indicating the PDU session state, and the first LADN information is information different from the second LADN information.

Assignees

• Sharp Kk
• Fg innovation co ltd

Inventors

• KAWASAKI Yudai
• Aramoto Masafumi

Classifications

• H04W60/00

  Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration · CPC title

• H04W76/12 Primary

  Setup of transport tunnels · CPC title

• H04W76/32

  Release of transport tunnels · CPC title

• H04W76/16

  Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer · CPC title

• H04W76/22

  Manipulation of transport tunnels · CPC title