WO2016180179A1

WO2016180179A1 - Method for acquiring location of terminal in wi-fi network, terminal, lte communication device, and system

Info

Publication number: WO2016180179A1
Application number: PCT/CN2016/079597
Authority: WO
Inventors: 李道红; 詹亚军
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-08-19
Filing date: 2016-04-18
Publication date: 2016-11-17
Also published as: CN106470397B; CN106470397A

Abstract

A method for acquiring the location of a terminal in a Wi-Fi network, a terminal, an LTE communication device, and a system. The terminal is capable of transmitting in a Wi-Fi network location information of the terminal to an evolved packet data gateway of an LTE communication device in an LTE network, and transmitting the location information to other target LTE network elements of the LTE communication device in the LTE network via the evolved packet data gateway. In the method, the LTE communication device (such as a PDN GW, PCRF, and IMS) in the LTE network is allowed to acquire the location information of the terminal in the Wi-Fi, thus facilitating implementation of relevant applications (such as number completion) requiring the location information of the terminal, also facilitating a carrier in launching location information-reliant services such as Wi-Fi voice services, and enriching services for the terminal with access to Wi-Fi.

Description

Method for acquiring terminal location in WiFi network, terminal, LTE communication device and system

Technical field

This document relates to, but is not limited to, the field of communications, and specifically relates to a method, a terminal, an LTE communication device and a system for acquiring a terminal location in a WiFi network.

Background technique

Wireless (Wireless Fidelity) is a technology that wirelessly connects terminals such as personal computers and handheld devices (such as pads and mobile phones). WiFi is a brand of wireless network communication technology and is owned by the Wi-Fi Alliance. The goal is to improve interoperability between wireless network products based on the IEEE 802.11 standard.

WiFi was originally a wireless fidelity abbreviation. WiFi English is called Wireless Fidelity. In the category of wireless LAN, it refers to "wireless compatibility authentication". It is essentially a commercial certification, and also a wireless networking technology, through radio waves. To connect to the network; the common one is a wireless router, then the terminal of the wireless router's effective range covered by the radio wave can be connected by WiFi connection. If the wireless router is connected with an ADSL line or other Internet access line, then it is Called "hot spot."

The main advantage of WiFi is that it does not require wiring and can be free from the wiring conditions. Therefore, it is very suitable for mobile office users, and because the transmitted signal power is lower than 100mw, which is lower than the mobile phone transmit power, WiFi Internet is also the safest and healthier. of.

Since the frequency band of WiFi does not require any telecom operation licenses worldwide, WLAN wireless devices provide a wireless air interface that can be used worldwide, which is extremely inexpensive and has a very high data bandwidth.

The LTE network is an evolution of the 3G network. In the 2G/3G network, the voice service is mainly implemented in the CS domain (circuit bearer domain), while in the LTE 4G network, only the PS domain (data domain) and no CS domain are available. . Therefore, the LTE mobile terminal needs to adopt a PS domain-based VoLTE (LTE voice service) technology to implement voice services based on the LTE 4G network.

With the advent of terminals supporting VoWiFi (WiFi voice service) services, VoWiFi complements VoLTE, and the interworking of VoWiFi and VoLTE has become the development trend of current voice services.

The interworking of VoWiFi and VoLTE follows the 3GPP and non-3GPP interoperability standards established by the 3GPP (3rd Generation Partnership Project). Its network architecture is shown in Figure 1, which contains the following devices/network elements:

UE (User Equipment): User equipment. Access the WiFi/LTE network and access the VoWiFi/VoLTE service.

E-UTRAN (Evolved UTRAN): an evolved universal mobile communication system terrestrial radio access network, that is, a mobile communication wireless network in LTE.

MME (Mobility Management Entity): A control plane function entity that temporarily stores user data. It is responsible for managing and storing UE contexts (such as user IDs, mobility management status, user security parameters, etc.) and assigning temporary identifiers to users. When the UE is camped on the tracking area or the network is responsible for authenticating the user; processing all non-access stratum messages between the MME and the UE.

HSS (Home Subscriber Server): A home subscriber server that permanently stores user subscription data.

Serving GW (Gateway), also known as SGW: Service Gateway, which is a user plane entity responsible for user plane data routing processing. Manage and store the bearer context of the UE, such as IP bearer service parameters and network internal routing information. It is the anchor point of the internal user plane of the 3GPP system. A user can only have one Serving GW at a time;

The PDN GW (Packet Data Network Gateway), that is, the PGW: Packet Data Network Gateway, is responsible for the UE accessing the PDN gateway, assigning the user IP address, and is the mobility anchor of the 3GPP and non-3GPP access systems. Users can access multiple PDN GWs at the same time.

Policy and Charging Rule Functionality (PCRF): The function entity generates a QOS (Quality of Service) rule that controls user data transmission based on service information, user subscription information, and operator configuration information. And billing rules. The functional entity can also control the establishment and release of bearers in the access network.

WLAN (Wireless Local Area Network): Wireless LAN. Access network for VoWiFi services.

3GPP AAA Server (3GPP Authentication, Authorization, Accounting Server): 3GPP authentication and authorization accounting server, responsible for authentication and signing of the UE.

ePDG (Evolved Packet Data Gateway): An evolved packet data gateway that is a non-3GPP (WLAN) and 3GPP interoperable access gateway. The UE accessing the WLAN is authenticated and signed by the ePDG to the 3GPP AAA Server, and accesses the PDN GW through the ePDG to further use the resources of the LTE core network.

IMS (IP Multimedia Subsystem): The Internet Protocol Multimedia Subsystem, which is a subsystem of the 3GPP (Third Generation Partnership Project) that supports IP multimedia services. Its distinctive feature is the use of SIP (Session Initial Protocol, Session initiation protocol), communication is independent of access mode, with multiple multimedia services control functions and bearer separation, call and session separation, application and service separation, service and network separation, and mobile network and Internet service integration Ability.

During the LTE network, the eNB sends the location information of the terminal to the MME. The MME further reports the location to the SGW. The SGW reports the location information to the PGW. The PGW reports the location information to the PCRF. The IMS then obtains the information from the PCRF. Further, the service of number completion and the like is implemented based on the location information. However, when the UE is attached to the WLAN network, the location information of the user cannot be carried. When the VoWiFi service is implemented, the LTE communication devices such as the PDN GW, the PCRF, and the IMS in the LTE network cannot obtain the location information of the terminal, resulting in the need for the location information of the terminal. Applications such as number completion may not be implemented.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiments of the present invention provide a method for acquiring a location of a terminal in a WiFi network, a terminal, an LTE communication device, and a system, which enable the LTE communication device to obtain location information of the terminal in the WiFi network, so that related applications requiring terminal location information are implemented.

An embodiment of the present invention provides a method for acquiring a location of a terminal in a WiFi network, including:

The terminal transmits its own location information to the LTE communication in the LTE network in the WiFi network An evolved packet data gateway of the device, the terminal transmitting the location information to a target LTE network element of the LTE communication device by using an evolved packet data gateway.

In an embodiment of the present invention, the terminal transmitting the location information of the terminal to the evolved packet data gateway in the WiFi network includes:

When the terminal switches the access point in the WiFi network, or when the access point is switched in the WiFi network, or during the refresh process after the WiFi network is successfully attached, or when the location changes after the WiFi network is successfully attached, or the WiFi network is successfully attached And receiving the location information acquisition request message sent by the LTE communication device, and transmitting the location information to the evolved packet data gateway.

The embodiment of the invention further provides a method for acquiring a location of a terminal in a WiFi network, including:

The evolved packet data gateway of the LTE communication device receives location information transmitted by the terminal in the WiFi network, where the location information is location information of the terminal itself;

The evolved packet data gateway sends the location information to a target LTE network element of the LTE communication device.

In an embodiment of the present invention, the target LTE network element includes a packet data network gateway, a policy and charging rule function entity, and an international network protocol multimedia subsystem.

In an embodiment of the present invention, the location information is that the terminal transmits the request message to the evolved packet data gateway through an Internet Key Exchange Security Association establishment request message that includes the location information during a WiFi network attachment process. The transmitting, by the evolved packet data gateway, the location information to the target LTE network element includes:

The packet data network gateway receives a create session request message sent by the evolved packet data gateway, where the create session request message includes the evolved packet data gateway extracted from the internet key exchange security association establishment request message. The location information;

The packet data network gateway extracts the location information from the create session request message, adds it to the IP connectivity access network session establishment request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session establishment request message, and after receiving the authentication authorization request message sent by the international network protocol multimedia subsystem, The location information is added to the authentication authorization response message and sent to the international Network Protocol Multimedia Subsystem.

In an embodiment of the present invention, the location information is transmitted by the terminal to the evolved packet data gateway by using the created sub-security association negotiation request message that includes the location information in the refresh process after the WiFi network is successfully attached; The transmitting, by the evolved packet data gateway, the location information to the target LTE network element includes:

The packet data network gateway receives the modified bearer request message sent by the evolved packet data gateway, where the modified bearer request message includes the location extracted by the evolved packet data gateway from the created sub-security association negotiation request message. Location information

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP connectivity access network session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session update request message, adds it to the re-authorization request message, and sends the information to the international network protocol multimedia subsystem.

In an embodiment of the present invention, the location information is sent by the terminal when the WiFi network switches the access point, or when the terminal location changes after the WiFi network is successfully attached, by the notification request message including the location information. And the sending, by the evolved packet data gateway, the location information to the target LTE network element includes:

Receiving, by the packet data network gateway, a modify bearer request message sent by the evolved packet data gateway, where the modify bearer request message includes the location information extracted by the evolved packet data network from the notification request message;

In an embodiment of the present invention, the location information is after the terminal successfully attaches to the WiFi network. Receiving, by the LTE communication device, the location information acquisition request message, the location information acquisition request response message is delivered to the evolved packet data gateway; and the evolved packet data gateway sends the location information to the target LTE The network element includes:

Receiving, by the packet data network gateway, a modify bearer request message sent by the evolved packet data gateway, where the modify bearer request message includes the location information extracted by the evolved packet data gateway from the location information acquisition request response message ;

An embodiment of the present invention further provides a terminal, including: a location acquiring module, and a location information sending module;

The location obtaining module is configured to acquire location information of the terminal;

The location information sending module is configured to transmit the location information of the terminal to the evolved packet data gateway of the LTE communication device in the LTE network, and send the location information to the LTE network by using the evolved packet data gateway. Target LTE network element.

In an embodiment of the present invention, the location information sending module is in the process of attaching the WiFi network, or switching the access point in the WiFi network, or in the refreshing process after the WiFi network is successfully attached, or in the WiFi network. When the location of the terminal changes after the connection is successful, or after receiving the location information acquisition request message sent by the LTE communication device after the WiFi network is successfully attached, the location information is delivered to the evolved packet data gateway.

An embodiment of the present invention further provides an LTE communication device, including an evolved packet data gateway and a target LTE network element;

The evolved packet data gateway is configured to receive location information delivered by the terminal in the WiFi network, and send the received location information to the target LTE network element;

The target LTE network element is configured to receive location information of the terminal sent by the packet data gateway.

In an embodiment of the present invention, the location information is that the terminal transmits the request message to the evolved packet data gateway through an Internet Key Exchange Security Association establishment request message that includes the location information during a WiFi network attachment process. The target LTE network element is configured to implement location information of the terminal that is sent by the receiving packet data gateway by:

In an embodiment of the present invention, the location information is transmitted by the terminal to the evolved packet data gateway by using the created sub-security association negotiation request message that includes the location information in the refresh process after the WiFi network is successfully attached; The target LTE network element is configured to implement location information of the terminal that is sent by the receiving packet data gateway by:

The policy and charging rule function entity extracts the location information from an IP connectivity access network session update request message, adds it to a re-authorization request message, and sends the message to the international network protocol multimedia Body subsystem.

In an embodiment of the present invention, the location information is sent by the terminal when the WiFi network switches the access point, or when the terminal location changes after the WiFi network is successfully attached, by the notification request message including the location information. For the evolved packet data gateway, the target LTE network element is configured to implement location information of the terminal that is sent by the receiving packet data gateway by:

In an embodiment of the present invention, the location information is sent by the terminal to the evolved packet by using the location information acquisition request response message when the terminal receives the location information acquisition request message sent by the LTE communication device after the WiFi network is successfully attached. The target LTE network element is configured to implement location information of the terminal that is sent by the receiving packet data gateway by:

An embodiment of the present invention further provides a communication system, including the terminal as described above and as described above LTE communication device;

The terminal is configured to communicate its location information to the LTE communication device in a WiFi network.

The beneficial effects of the embodiments of the present invention are:

A method, a terminal, an LTE communication device, and a system for acquiring a location of a terminal in a WiFi network provided by an embodiment of the present invention, where the terminal can transmit its own location information to an evolved packet data gateway of the LTE communication device in the LTE network; The evolved packet data gateway will pass the location information to other target LTE network elements of the LTE communication device in the LTE network. In this way, the LTE communication device (for example, PDN GW, PCRF, IMS) in the LTE network can obtain the location information of the terminal in the WiFi, facilitating the implementation of related applications (such as number completion) that require terminal location information, and facilitating the operator. The service of relying on location information, such as the WiFi voice service, enables the terminal to access the WiFi service more abundantly and enhance the user experience.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic diagram of a network architecture of a communication system;

2 is a schematic flowchart of a method for acquiring a location of a terminal in a WiFi network according to Embodiment 1 of the present invention;

FIG. 3 is a schematic flowchart of reporting location information during a WiFi network attachment process according to Embodiment 2 of the present invention;

4 is a schematic flowchart of reporting location information during a handover process in a WLAN network according to Embodiment 2 of the present invention;

FIG. 5 is a schematic flowchart of reporting location information during a refresh process in a WLAN network according to Embodiment 2 of the present invention;

FIG. 6 is a schematic flowchart of reporting location information when a terminal location information changes in a WLAN according to Embodiment 2 of the present invention;

FIG. 7 is a schematic flowchart of actively acquiring terminal location information by a network side according to Embodiment 2 of the present invention;

FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1:

In this embodiment, the terminal first acquires its own location information, and then transmits its location information to the evolved packet data gateway of the LTE communication device in the LTE network in the WiFi network; the location information is transmitted to the LTE through the evolved packet data gateway. The target LTE network element of the LTE communication device in the network enables the target LTE network element in the LTE network to obtain the location information of the terminal in the WiFi, which is convenient for the related application requiring the terminal location information. The process is shown in Figure 2 and includes:

Step 201: The terminal acquires its own location information.

In this step, the terminal may acquire its own location information through its own location acquisition module (such as a positioning module (such as a GPS module)), or obtain its own location information through other positioning methods (for example, through cell information, etc.);

Step 202: The terminal transmits its location information to the evolved packet data gateway in the WiFi network, and sends the location information to the target LTE network element in the LTE network by using the evolved packet data gateway.

The terminal may transmit the location information acquired by the location obtaining module to the evolved packet data gateway in the WiFi network by using the location information sending module;

The target LTE network element includes a packet data network gateway PDN GW, a policy and charging rule function entity PCRF, and an international network protocol multimedia subsystem IMS; and may also include a serving gateway SGW, a mobility management entity MME, and the like.

In the foregoing step 202, the location information sending module of the terminal may specifically be in the process of attaching the WiFi network, or switching the access point in the WiFi network, or in the refreshing process after the WiFi network is successfully attached, or after the WiFi network is successfully attached. When the location changes, or when the location information acquisition request message sent by the target LTE network element is received after the WiFi network is successfully attached, the location information of the location is transmitted to the evolved packet data gateway.

The terminal transmits the location information to the evolved packet data in the process of attaching the WiFi network. When the gateway includes:

The terminal is attached to the WiFi access point;

Transmitting, by the terminal, an Internet Key Exchange Security Association (IKE SA) setup request message including the location information to the evolved packet data gateway;

The process of transmitting the location information to the target LTE network element by the evolved packet data gateway at this time includes:

The evolved packet data gateway extracts the location information of the terminal from the IKE SA setup request message, adds it to the create session request message, and sends it to the packet data network gateway;

The packet data network gateway extracts the location information of the terminal from the create session request message, and adds it to the IP-connectivity access network (IP CAN, IP-Connectivity Access Networ) session establishment request message and sends it to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information of the terminal from the IP CAN session establishment request message, and after receiving the authentication authorization request (AAR, AA-Request) message sent by the international network protocol multimedia subsystem, the location of the terminal The information is added to the authentication authorization response message (ie, the AAA message) and sent to the International Network Protocol Multimedia Subsystem. The international network protocol multimedia subsystem can extract the location information of the terminal from the AAA message, which facilitates the implementation of services such as number completion.

After the terminal refreshes the WiFi network after the connection is successful, the location information is transmitted to the evolved packet data gateway, including:

The terminal sends a CREATE-CHILD-SA negotiation request message to the evolved packet data gateway, where the CREATE-CHILD-SA negotiation request message includes location information of the terminal;

The Evolving Packet Data Gateway transmits the location information of the terminal to the target LTE network element, including:

The evolved packet data gateway extracts the location information of the terminal from the CREATE-CHILD-SA negotiation request message, adds it to the modify bearer request message, and sends it to the packet data network gateway;

The packet data network gateway extracts the location information of the terminal from the modify bearer request message, adds it to the IP CAN session update request message, and sends it to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP CAN session update request message, adds it to the Re-authorization Request (RAR) message, and sends it to the International Network Protocol Multimedia Subsystem. The international network protocol multimedia subsystem can extract the location information of the terminal from the RAR message, which facilitates the implementation of services such as number completion.

When the terminal switches the access point in the WiFi network, or changes the location of the terminal after the WiFi network is successfully attached, the location information of the terminal is transmitted to the evolved packet data gateway, including:

The terminal sends a notification request message to the evolved packet data gateway, where the notification request message includes location information of the terminal;

The evolved packet data gateway extracts the location information of the terminal from the notification request message, adds it to the modify bearer request message, and sends it to the packet data network gateway;

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP CAN session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information of the terminal from the IP CAN session update request message, adds it to the RAR message and sends it to the international network protocol multimedia subsystem; the international network protocol multimedia subsystem can extract from the RAR message. The location information to the terminal facilitates the implementation of services such as number completion.

After receiving the location information acquisition request message sent by the target LTE network element, the location information acquisition request message may be a packet data network gateway PDN GW, a policy and charging rule function entity PCRF, and an international network protocol multimedia subsystem. Passing any one or more of the IMSs to the evolved packet data gateway includes:

The terminal receives the target LTE network element (the location information acquisition request message may be any one of a packet data network gateway PDN GW, a policy and charging rule function entity PCRF, and an international network protocol multimedia subsystem IMS), and is forwarded by the evolved packet data gateway. Location information acquisition request message;

The terminal feeds back a location information acquisition request response message to the evolved packet data gateway, where the location information acquisition request response message includes location information of the terminal;

The Evolving Packet Data Gateway transmitting the location information of the terminal to the target LTE network element includes:

The evolved packet data gateway extracts the location information of the terminal from the location information acquisition request response message, adds it to the modify bearer request message, and sends the message to the packet data network gateway;

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP CAN session update request message, and sends it to the policy and charging rule function entity;

The policy and charging rule function entity extracts location information from the IP CAN session update request message. It is added to the RAR message and sent to the international network protocol multimedia subsystem; the international network protocol multimedia subsystem can extract the location information of the terminal from the RAR message, which is convenient for the application of the location.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.

Embodiment 2:

For a better understanding of the present invention, the present invention further exemplifies the present invention in combination with several specific application scenarios.

The following embodiments take the flow of the user's initial attachment/switching/refresh/active reporting of location information and the like as an example. In an actual application, the method in this embodiment may also be used to obtain location information of the terminal in a service process in which any other terminal in the WLAN network interacts with the evolved packet data gateway. In order to make the figure concise, the diagram of this embodiment ignores the forwarding network elements and related scenarios that have no influence on the transmission of key parameters, such as roaming, cross-network switching, etc., but it should be understood that these may exist in the actual environment. . In addition, in this embodiment, the terminal obtains location information by using GPS positioning as an example for example.

As shown in FIG. 3, the figure shows a process for the terminal to report the location of the terminal in the process of attaching the WiFi network. The terminal first obtains the location information of the terminal by means of GPS positioning, and then the reporting process of the location information includes:

Step 301, the terminal is attached to the WiFi access point;

Step 302: The terminal and the ePDG (Evolved Packet Data Gateway) perform an Internet Key Exchange Security Association initialization (IKE_SA_INIT) negotiation to establish an IKE SA.

Step 303: The terminal and the ePDG perform an Internet Key Exchange Authentication (IKE_AUTH) negotiation, establish an IKE SA, and carry a notification payload in the request message, including the GPS location information of the terminal.

Step 304: The ePDG sends a create session request message to the packet data gateway, where the location information (ULI, User Location Information) includes the GPS location information of the terminal.

Step 305: The packet data gateway sends an IP CAN session establishment request message to the policy and charging rule function entity, and includes GPS location information of the terminal in the ULI.

Step 306: The policy and charging rule function entity sends an IP CAN session establishment response message to the packet data gateway.

Step 307: The packet data gateway sends a create session response message to the ePDG.

Step 308, the terminal and the ePDG complete the IPSec tunnel negotiation.

Step 309, the terminal initiates a VoWiFi call.

Step 310: The Internet Protocol Multimedia Subsystem sends an Authentication Authorization Request (AAR, AA-Request) message to the policy and charging rule function entity.

Step 311: The policy and charging rule function entity sends an authentication authorization response (AAA, AA-Answer) message to the Internet Protocol multimedia subsystem, and includes the GPS location information of the terminal in the ULI.

As shown in FIG. 4, the figure shows a process for reporting terminal location information during a handover process of a terminal in a WLAN network, including:

Step 401, the terminal is attached to the WiFi access point 1;

Step 402, the terminal switches to the WiFi access point 2;

Step 403: The terminal sends a notification request message to the ePDG (evolved packet data gateway), and carries the notification payload in the notification request message, including the GPS location information of the terminal.

Step 404: The ePDG sends a modify bearer request message to the packet data gateway, where the location information of the terminal is included in the ULI.

Step 405: The packet data gateway sends an IP CAN session update request message to the policy and charging rule function entity, and includes the GPS location information of the terminal in the ULI.

Step 406: The policy and charging rule function entity sends an IP CAN session establishment response message to the packet data gateway.

Step 407: The packet data gateway sends a create session response message to the ePDG.

Step 408, the terminal completes the handover to the WiFi access point 2;

Step 409: The policy and charging rule function entity sends a RAR message to the Internet Protocol multimedia subsystem, and includes the GPS location information of the terminal in the ULI.

Step 410: The Internet Protocol Multimedia Subsystem sends an RAA message to the Policy and Charging Rules function entity.

As shown in FIG. 5, the figure shows a process for reporting, by the terminal, the location information of the terminal in the WLAN network, that is, Rekey, which means that the key information is refreshed by the Internet key exchange, and the signaling used is to create a sub-security alliance. include:

Step 501: The terminal is successfully attached to the WLAN network.

Step 502: The terminal initiates a sub-security association CREATE_CHILD_SA negotiation to the ePDG (evolved packet data gateway), and carries a notification payload in the request message, including the GPS location information of the terminal.

Step 503: The ePDG sends a modify bearer request message to the packet data gateway, where the location information of the terminal is included in the ULI.

Step 504: The packet data gateway sends an IP CAN session update request message to the policy and charging rule function entity, and includes the GPS location information of the terminal in the ULI.

Step 505: The policy and charging rule function entity sends an IP CAN session establishment response message to the packet data gateway.

Step 506: The packet data gateway sends a create session response message to the ePDG.

Step 507: The policy and charging rule function entity sends a RAR message to the Internet Protocol multimedia subsystem, and includes the GPS location information of the terminal in the ULI.

Step 508, the Internet Protocol Multimedia Subsystem sends an RAA message to the Policy and Charging Rules Function Entity.

As shown in FIG. 6, the figure shows a process for actively reporting terminal location information when the terminal location changes, including:

Step 601, the terminal is successfully attached to the WLAN network;

Step 602, the location of the terminal changes;

Step 603: The terminal sends a notification request message to the ePDG (evolved packet data gateway), and carries the notification payload in the notification request message, including the GPS location information of the terminal.

Step 604: The ePDG sends a modify bearer request message to the packet data gateway, where the location information of the terminal is included in the ULI.

Step 605, the packet data gateway sends an IP CAN session to the policy and charging rule function entity. a new request message and including the GPS location information of the terminal in the ULI;

Step 606: The policy and charging rule function entity sends an IP CAN session establishment response message to the packet data gateway.

Step 607: The packet data gateway sends a create session response message to the ePDG.

Step 608: The policy and charging rule function entity sends a RAR message to the Internet Protocol multimedia subsystem, and includes the GPS location information of the terminal in the ULI.

Step 609, the Internet Protocol Multimedia Subsystem sends an RAA message to the policy and charging rule function entity.

As shown in FIG. 7, the figure shows a process for obtaining location information from a terminal when the network side needs terminal location information, including:

Step 701, the terminal is successfully attached in the WLAN network;

Step 702: The target LTE network element (IMS, PCRF, PDN GW) needs terminal location information.

In step 703, the target LTE network element sends a notification request message to the terminal through the ePDG (evolved packet data gateway), and carries the notification payload in the notification request message, including the identifier indicating that the terminal reports the GPS location information; the terminal replies to the ePDG with the notification response message. And carrying the notification payload in the notification request message, including the GPS location information of the terminal;

Step 704: The ePDG sends a modify bearer request message to the packet data gateway, where the location information of the terminal is included in the ULI.

Step 705: The packet data gateway sends an IP CAN session update request message to the policy and charging rule function entity, and includes the GPS location information of the terminal in the ULI.

Step 706: The policy and charging rule function entity sends an IP CAN session establishment response message to the packet data gateway.

Step 707: The packet data gateway sends a create session response message to the ePDG.

Step 708: The policy and charging rule function entity sends a RAR message to the Internet Protocol multimedia subsystem, and includes the GPS location information of the terminal in the ULI.

Step 709, the Internet Protocol Multimedia Subsystem sends an RAA message to the policy and charging rule function entity.

Compared with the related art, the method of the embodiment of the present invention solves the problem that the VoWiFi call cannot obtain the terminal location information, and the service cannot be based on the location, so that the terminal accesses the WiFi service more abundantly and improves the user experience.

The embodiment of the invention further provides a terminal. As shown in FIG. 8, the terminal includes:

a location acquisition module, configured to acquire location information of the terminal;

The location information sending module is configured to transmit the location information of the terminal to the evolved packet data gateway in the WiFi network, and send the location information to the target LTE network element in the LTE network by using the evolved packet data gateway.

The location obtaining module may be a positioning module, such as a GPS module, or may be configured to acquire location information of the terminal by using cell information or the like.

The location information sending module is configured to be in a WiFi network attaching process, or when the access point is switched in the WiFi network, or in a refreshing process after the WiFi network is successfully attached, or when the location changes after the WiFi network is successfully attached, Or, when the location information acquisition request message sent by the target LTE network element is received after the WiFi network is successfully attached, the location information of the terminal is delivered to the evolved packet data gateway.

The target LTE network element includes a packet data network gateway PDN GW, a policy and charging rule function entity PCRF, and an international network protocol multimedia subsystem IMS; and may further include a serving gateway SGW, a mobility management entity MME, and the like.

The evolved packet data gateway is configured to receive location information transmitted by the terminal in the WiFi network, and send the received location information to the target LTE network element;

The target LTE network element includes a packet data network gateway, a policy and charging rule function entity, and an international network protocol multimedia subsystem.

Optionally, the location information is that, when the terminal is in the WiFi network attachment process, the terminal transmits the request message to the evolved packet data gateway by using an Internet Key Exchange Security Association setup request message that includes the location information; The network element is configured to implement location information of the terminal that is sent by the receiving packet data gateway by:

Optionally, the location information is sent by the terminal to the evolved packet data gateway by using a create sub-security association negotiation request message that includes the location information in a refresh process after the WiFi network is successfully attached;

The target LTE network element is configured to implement location information of a terminal that is sent by the receiving packet data gateway by:

Optionally, the location information is that when the terminal switches the access point in the WiFi network, or the terminal location changes after the WiFi network is successfully attached, the notification request message that includes the location information is delivered to the evolved packet data gateway. of;

Optionally, the location information is sent by the terminal to the evolved packet data gateway by using the location information acquisition request response message when the terminal receives the location information acquisition request message sent by the LTE communication device after the WiFi network is successfully attached;

The embodiment of the invention further provides a communication system, comprising the terminal and the LTE communication device as described above.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. The invention is not limited to any specific form of combination of hardware and software.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Industrial applicability

The LTE communication device in the LTE network can obtain the location information of the terminal in the WiFi, facilitate the implementation of the related application that needs the location information of the terminal, and facilitate the operation of the location-based information such as the WiFi voice service by the operator. Access to WiFi services is more abundant and enhances the user experience.

Claims

A method for obtaining a terminal location in a wireless fidelity WiFi network, comprising:

Transmitting, by the terminal, the location information of the terminal to the evolved packet data gateway of the LTE communication device in the long term evolution LTE network in the WiFi network;

The terminal sends the location information to a target LTE network element of the LTE communication device by using an evolved packet data gateway.
The method for obtaining a location of a terminal in a WiFi network according to claim 1, wherein

The terminal transmits its own location information to the evolved packet data gateway in the WiFi network, including:

When the terminal switches the access point in the WiFi network, or when the access point is switched in the WiFi network, or during the refresh process after the WiFi network is successfully attached, or when the location changes after the WiFi network is successfully attached, or the WiFi network is successfully attached And receiving the location information acquisition request message sent by the LTE communication device, and transmitting the location information to the evolved packet data gateway.
A method for obtaining a terminal location in a wireless fidelity WiFi network, comprising:

The evolved packet data gateway of the LTE communication device receives the location information transmitted by the terminal in the WiFi network, where the location information is location information of the terminal itself;

The evolved packet data gateway sends the location information to a target LTE network element of the LTE communication device.
The method for obtaining a location of a terminal in a WiFi network according to claim 3, wherein

The target LTE network element includes a packet data network gateway, a policy and charging rule function entity, and an international network protocol multimedia subsystem.
The method for obtaining a location of a terminal in a WiFi network according to claim 4, wherein the location information is that the terminal establishes a request message through an Internet Key Exchange Security Association that includes the location information during a WiFi network attachment process. To the evolved packet data gateway;

The transmitting, by the evolved packet data gateway, the location information to the target LTE network element includes:

Receiving, by the packet data network gateway, a create session request message sent by the evolved packet data gateway, where the create session request message includes the evolved packet data gateway from the internet The key exchange security association establishes the location information extracted by the request message;

And the packet data network gateway extracts the location information from the create session request message, adds the location information to the Internet Protocol IP connectivity access network session establishment request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session establishment request message, and after receiving the authentication authorization request message sent by the international network protocol multimedia subsystem, The location information is added to the authentication authorization response message and sent to the international network protocol multimedia subsystem.
The method for obtaining a location of a terminal in a WiFi network according to claim 4, wherein the location information is transmitted by the terminal to create a sub-security association negotiation request message including the location information in a refresh process after the WiFi network is successfully attached. Evolved packet data gateway;

The transmitting, by the evolved packet data gateway, the location information to the target LTE network element includes:

The packet data network gateway receives the modified bearer request message sent by the evolved packet data gateway, where the modified bearer request message includes the location extracted by the evolved packet data gateway from the created sub-security association negotiation request message. Location information

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP connectivity access network session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session update request message, adds it to the re-authorization request message, and sends the information to the international network protocol multimedia subsystem.
The method for obtaining a location of a terminal in a WiFi network according to claim 4, wherein the location information is when the terminal switches the access point in the WiFi network, or when the location of the WiFi network changes after the WiFi network is successfully attached, The notification request message of the location information is delivered to the evolved packet data gateway;

The transmitting, by the evolved packet data gateway, the location information to the target LTE network element includes:

Receiving, by the packet data network gateway, a modify bearer request message sent by the evolved packet data gateway, where the modify bearer request message includes the location information extracted by the evolved packet data network from the notification request message;

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP connectivity access network session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session update request message, adds it to the re-authorization request message, and sends the information to the international network protocol multimedia subsystem.
The method for obtaining a location of a terminal in a WiFi network according to claim 4, wherein the location information is obtained by using the location information when the terminal receives the location information acquisition request message sent by the LTE communication device after the WiFi network is successfully attached. The request response message is delivered to the evolved packet data gateway;

The transmitting, by the evolved packet data gateway, the location information to the target LTE network element includes:

Receiving, by the packet data network gateway, a modify bearer request message sent by the evolved packet data gateway, where the modify bearer request message includes the location information extracted by the evolved packet data gateway from the location information acquisition request response message ;

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP connectivity access network session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session update request message, adds it to the re-authorization request message, and sends the information to the international network protocol multimedia subsystem.
A terminal includes: a location acquisition module, and a location information sending module;

The location obtaining module is configured to acquire location information of the terminal;

The location information sending module is configured to transmit the location information of the terminal to the evolved packet data gateway of the LTE communication device in the long term evolution LTE network in the wireless fidelity WiFi network, The evolved packet data gateway sends the location information to a target LTE network element in the LTE network.
The terminal according to claim 9, wherein the location information sending module is configured to be in a WiFi network attaching process, or when the access point is switched in the WiFi network, or in a refreshing process after the WiFi network is successfully attached, Or, when the terminal location changes after the WiFi network is successfully attached, or when the location information acquisition request message sent by the LTE communication device is received after the WiFi network is successfully attached, the location information is delivered to the evolved packet data gateway.
A long term evolution LTE communication device, including an evolved packet data gateway and a target LTE network element;

The evolved packet data gateway is configured to receive location information transmitted by the terminal in the wireless fidelity WiFi network, and send the received location information to the target LTE network element;

The target LTE network element is configured to receive location information of the terminal sent by the packet data gateway.
The LTE communication device of claim 11, wherein the target LTE network element comprises a packet data network gateway, a policy and charging rules functional entity, and an international network protocol multimedia subsystem.
The LTE communication device according to claim 12, wherein said location information is that said terminal transmits an Internet Key Exchange Security Association establishment request message including said location information to said evolved type during a WiFi network attachment process Packet data gateway;

The target LTE network element is configured to implement location information of a terminal that is sent by the receiving packet data gateway by:

The packet data network gateway receives a create session request message sent by the evolved packet data gateway, where the create session request message includes the evolved packet data gateway extracted from the internet key exchange security association establishment request message. The location information;

And the packet data network gateway extracts the location information from the create session request message, adds the location information to the Internet Protocol IP connectivity access network session establishment request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session establishment request message, and after receiving the authentication authorization request message sent by the international network protocol multimedia subsystem, The location information is added to the authentication authorization response message and sent to the international network protocol multimedia subsystem.
The LTE communication device according to claim 12, wherein the location information is transmitted to the evolved packet data gateway by the created sub-security association negotiation request message including the location information in the refresh process after the WiFi network is successfully attached. of;

The target LTE network element is configured to implement location information of a terminal that is sent by the receiving packet data gateway by:

The packet data network gateway receives the modified bearer request message sent by the evolved packet data gateway, where the modified bearer request message includes the location extracted by the evolved packet data gateway from the created sub-security association negotiation request message. Location information

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP connectivity access network session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session update request message, adds it to the re-authorization request message, and sends the information to the international network protocol multimedia subsystem.
The LTE communication device according to claim 12, wherein the location information is a notification that the terminal includes the location information when the WiFi network switches the access point or when the terminal location changes after the WiFi network is successfully attached. Requesting a message to the evolved packet data gateway;

The target LTE network element is configured to implement location information of a terminal that is sent by the receiving packet data gateway by:

Receiving, by the packet data network gateway, a modify bearer request message sent by the evolved packet data gateway, where the modify bearer request message includes the location information extracted by the evolved packet data network from the notification request message;

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP connectivity access network session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session update request message, adds it to the re-authorization request message, and sends the information to the international network protocol multimedia subsystem.
The LTE communication device according to claim 12, wherein the location information is sent by the location information acquisition request response message to the terminal after receiving the location information acquisition request message sent by the LTE communication device after the WiFi network is successfully attached. Evolved packet data gateway;

The target LTE network element is configured to implement location information of a terminal that is sent by the receiving packet data gateway by:

Receiving, by the packet data network gateway, a modify bearer request message sent by the evolved packet data gateway, where the modify bearer request message includes the location information extracted by the evolved packet data gateway from the location information acquisition request response message ;

The packet data network gateway extracts the location information from the modify bearer request message, adds it to the IP connectivity access network session update request message, and sends the location information to the policy and charging rule function entity;

The policy and charging rule function entity extracts the location information from the IP connectivity access network session update request message, adds it to the re-authorization request message, and sends the information to the international network protocol multimedia subsystem.
A communication system comprising the terminal of claim 9 or 10 and the Long Term Evolution (LTE) communication device of any of claims 11-16.