TERMINAL DEVICE AND PCRF

• US 20180302935A1
• Filed: 05/25/2016
• Published: 10/18/2018
• Est. Priority Date: 05/25/2015
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: KAWASAKI, Yudai, ARAMOTO, Masafumi
• Granted Patent: US 10,455,626 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 28/0263 involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 4/24 Accounting or billing
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/16 Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

A method of communication control and the like accompanied with a multi-access PDN connectivity establishment request from a terminal device. Communication control for establishing a multi-access PDN connection is performed based on a response to a PDN connectivity establishment request from the terminal device. Communication control is performed for transmitting and/or receiving user data by using one or more default bearers for a multi-access PDN connection.

Claims

1. A User Equipment (UE) establishing a Packet Data Network (PDN) connection over a 3GPP access, the UE comprising:

WLAN interface circuitry configured to;

transmit a PDN connectivity request message to a Trusted WLAN Access Gateway (TWAG) in a case of adding a WLAN access to the PDN connection, and

receive a PDN connectivity accept message from the TWAG; and

a controller,

wherein, in a case where a Network-based IP flow mobility (NBIFOM) mode of the PDN connection is a UE-initiated NBIFOM mode, the PDN connectivity request message includes first information indicating a default access selected by the UE,

the PDN connectivity accept message includes second information indicating a default access determined by a Policy and Charging Rule Function (PCRF), based on the first information, and

the controller is further configured to;

consider the default access indicated by the second information, based on reception of the PDN connectivity accept message, and

route a packet not matching any routing filter to the default access indicated by the second information.

2. The UE according to claim 1,

wherein the first information and the second information indicate the 3GPP access or a non-3GPP access, respectively.

3. The UE according to claim 1,

wherein the second information is information determined by the PCRF verifying the first information.

7. The UE according to claim 2,

wherein the second information is information determined by the PCRF verifying the first information.

9. The UE according to claim 1, the UE further comprising:

LTE interface circuitry configured to;

transmit a second PDN connectivity request message to a Mobility Management Entity (MME) in order to establish the PDN connection, and

receive an Activate default Evolved Packet System (EPS) bearer context request message from the MME,

wherein the second PDN connectivity request message includes third information indicating a requested NBIFOM mode,

the Activate default EPS bearer context request message includes fourth information indicating NBIFOM mode selected by the PCRF or a PDN Gateway (PGW), and

the UE considers the NBIFOM mode indicated by the fourth information as a NBIFOM mode of the PDN connection, based on the reception of the Activate default EPS bearer context request message.

4. A Policy and Charging Rule Function (PCRF) comprising:

IP mobile communication network interface circuitry configured to receive from a User Equipment (UE) first information indicating a default access selected by the UE via a Packet Data Network (PDN) Gateway (PGW), in a case where a Network-based IP flow mobility (NBIFOM) mode of a PDN connection established by the UE over a 3GPP access is a UE-initiated NBIFOM mode and a WLAN access is to be added to the PDN connection; and

a controller configured to determine the default access, based on the first information,

wherein the IP mobile communication network interface circuitry is further configured to transmit second information indicating the default access determined by the controller to the UE via the PGW.

5. The PCRF according to claim 4, wherein

the first information and the second information indicate the 3GPP access or a non-3GPP access, respectively.

6. The PCRF according to claim 4, wherein

the controller is further configured to determine the default access by verifying the first information.

8. The PCRF according to claim 5, wherein

the controller is further configured to determine the default access by verifying the first information.

10. A communication method performed by a User Equipment (UE) establishing a Packet Data Network (PDN) connection over a 3GPP access, the communication method comprising:

transmitting a PDN connectivity request message to a Trusted WLAN Access Gateway (TWAG) in a case of adding a WLAN access to the PDN connection, and

receiving a PDN connectivity accept message from the TWAG,

wherein

in a case where a Network-based IP flow mobility (NBIFOM) mode of the PDN connection is a UE-initiated NBIFOM mode, the PDN connectivity request message includes first information indicating a default access selected by the UE, and

the PDN connectivity accept message includes second information indicating a default access determined by a Policy and Charging Rule Function (PCRF), based on the first information, and

the communication method further comprising;

considering the default access indicated by the second information, based on reception of the PDN connectivity accept message; and

routing a packet not matching any routing filter to the default access indicated by the second information.

11. The communication method according to claim 10,

wherein the first information and the second information indicate the 3GPP access or a non-3GPP access, respectively.

12. The communication method according to claim 10,

wherein the second information is information determined by the PCRF verifying the first information.

13. The communication method according to claim 10, the communication method further comprising:

transmitting a second PDN connectivity request message to a Mobility Management Entity (MME) in order to establish the PDN connection; and

receiving an Activate default Evolved Packet System (EPS) bearer context request message from the MME,

wherein the second PDN connectivity request message includes third information indicating a requested NBIFOM mode,

the Activate default EPS bearer context request message includes fourth information indicating NBIFOM mode selected by the PCRF or a PDN Gateway (PGW), and

the UE considers the NBIFOM mode indicated by the fourth information as a NBIFOM mode of the PDN connection, based on the reception of the Activate default EPS bearer context request message.

14. A communication method performed by a Policy and Charging Rule Function (PCRF), the communication method comprising:

receiving from a User Equipment (UE) first information indicating a default access selected by the UE via a Packet Data Network (PDN) Gateway (PGW), in a case where a Network-based IP flow mobility, NBIFOM, mode of a PDN connection established by the UE over a 3GPP access is a UE-initiated NBIFOM mode and a WLAN access is to be added to the PDN connection;

determining the default access, based on the first information; and

transmitting second information indicating the default access determined by the PCRF to the UE via the PGW.

15. The communication method according to claim 14, where

the first information and second information indicate the 3GPP access or a non-3GPP access, respectively.

16. The communication method according to claim 14, the communication method further comprising:

determining the default access by verifying the first information.