Methods for establishing connection for packet data transfer of a wireless communication device

Patent metadata

Field	Value
Publication number	US-2020359291-A1
Application number	US-201716754591-A
Country	US
Kind code	A1
Filing date	Oct 9, 2017
Priority date	Oct 9, 2017
Publication date	Nov 12, 2020
Grant date	—

Abstract

The invention relates to methods and devices establishing connection for packet data transfer of a wireless communication device and methods and devices for of enabling handover of a wireless communication device. In an aspect of the invention, a method performed by a wireless communication device ( 101, 201 ) of enabling establishing of connection for packet data transfer is provided. The method comprises transmitting (S 108 , S 206 ), to a mobility management node ( 103, 203 ), during the establishment of said connection, an identifier of the established connection, and a Single Network Slice Selection Assistance Information (S-NSSAI) associated with the established connection.

First claim

1 - 54 . (canceled)

55 . A method performed by a wireless communication device for enabling establishment of a connection for packet data transfer, the method comprising:
during the establishment of the connection, transmitting to a mobility management node an identifier of the established connection and a Single Network Slice Selection Assistance Information (S-NSSAI) associated with the established connection.

56 . The method of claim 55 , wherein the wireless communication device is provisioned with the S-NSSAI before the establishing of the connection.

57 . The method of claim 55 , further comprising:
transmitting, to the mobility management node in a target communication network, a request to establish the connection; and receiving, from the mobility management node, network slicing information enabling the wireless communication device to acquire the S-NSSAI associated with the connection being established.

58 . A method performed by a Session Management Function for enabling establishment of a connection for packet data transfer of a wireless communication device, the method comprising:
receiving a request to establish the connection for the wireless communication device; and providing the wireless communication device with network slicing information enabling the wireless communication device to acquire Single Network Slice Selection Assistance Information (S-NSSAI) associated with the connection being established.

59 . A method for enabling a handover of a wireless communication device, the method comprising:
receiving a request for handover comprising a Tracking Area Identity (TAI) designating a target Access and Mobility Management function (AMF) to which the wireless communication device may be handed over; and acquiring an identifier of at least one established packet data connection to be handed over, and a Single Network Slice Selection Assistance Information (S-NSSAI) associated with the at least one established packet data connection to be handed over.

60 . The method of claim 59 , wherein the request for handover comprises the identifier of the at least one established connection and the S-NSSAI associated with the at least one established packet data connection to be handed over.

61 . The method of claim 59 , wherein the acquiring comprising:
fetching the identifier of the at least one established connection and the S-NSSAI associated with the at least one established packet data connection to be handed over from a Unified Data Management (UDM) function.

62 . The method of claim 59 , wherein the request for handover comprises a priority indicator configured to indicate an order of priority among packet data connections in case a plurality of packet data connections are established and not all of the established packet data connections can be handled by the target AMF at handover.

63 . The method of claim 62 , wherein the priority indicator further indicates order of priority for any S-NSSAI yet without an active packet data connection.

64 . A wireless communication device configured to enable establishing of connection for packet data transfer, the wireless communication device comprising:
a processing unit; and a memory, the memory containing instructions executable by the processing unit, whereby the wireless communication device is operative to: transmit, to a mobility management node, during the establishment of the connection, an identifier of the established connection and a Single Network Slice Selection Assistance Information (S-NSSAI) associated with the established connection.

65 . The wireless communication device of claim 64 , wherein the wireless communication device is provisioned with the S-NSSAI before the establishing of the connection.

66 . The wireless communication device of claim 64 , being operative to:
transmit, to the mobility management node in a target communication network, a request to establish the connection; and receive, from the mobility management node, network slicing information enabling the wireless communication device to acquire the S-NSSAI associated with the connection being established.

67 . A Session Management Function configured to enable establishment of connection for packet data transfer of a wireless communication device, comprising:
a processing unit; and a memory, the memory containing instructions executable by the processing unit, whereby the Session Management Function is operative to: receive a request to establish the connection for the wireless communication device; and provide the wireless communication device, with network slicing information enabling the wireless communication device to acquire Single Network Slice Selection Assistance Information (S-NSSAI) associated with the connection being established.

68 . An Access and Mobility Management function (AMF) configured to enable handover of a wireless communication device, comprising:
a processing unit; and a memory, the memory containing instructions executable by the processing unit, whereby the Access and Mobility Management function is operative to: receive a request for handover comprising a Tracking Area Identity (TAI) designating a target AMF to which the wireless communication device may be handed over; and acquire an identifier of at least one established packet data connection to be handed over, and a Single Network Slice Selection Assistance Information (S-NSSAI) associated with the at least one established packet data connection to be handed over.

69 . The Access and Mobility Management function of claim 68 , the request for handover being configured to comprise the identifier of the at least one established connection and the S-NSSAI associated with the at least one established packet data connection to be handed over.

70 . The Access and Mobility Management function of claim 68 , being operative to:
fetch the identifier of the at least one established connection and the S-NSSAI associated with the at least one established packet data connection to be handed over from a Unified Data Management, UDM, function.

71 . The Access and Mobility Management function of claim 68 , the request for handover being configured to comprise a priority indicator configured to indicate an order of priority among packet data connections in case a plurality of packet data connections are established and not all of the established packet data connections can be handled by the target AMF at handover.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Ramle Peter
• Bolle Aldo
• Hedman Peter
• Olsson Lars-Bertil
• Schliwa-Bertling Paul

Classifications

• H04W76/11 Primary

  Allocation or use of connection identifiers · CPC title

• H04W48/18

  Selecting a network or a communication service · CPC title

• H04W8/08

  Mobility data transfer · CPC title

• H04W48/16

  Discovering, processing access restriction or access information · CPC title

• H04W36/32 Primary

  by location or mobility data, e.g. speed data · CPC title