CN109996225B - Data transmission method and equipment - Google Patents

Data transmission method and equipment Download PDF

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Publication number
CN109996225B
CN109996225B CN201810002096.3A CN201810002096A CN109996225B CN 109996225 B CN109996225 B CN 109996225B CN 201810002096 A CN201810002096 A CN 201810002096A CN 109996225 B CN109996225 B CN 109996225B
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sgw
terminal
address
paging information
network
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CN109996225A (en
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尚宇翔
刘景磊
王亚晨
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1045—Proxies, e.g. for session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/64—On-line charging system [OCS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing

Abstract

The invention discloses a method and equipment for data transmission, which are used for solving the problem of how to add a new network entity on a path of data transmission of a terminal at a visit place when a new function is added to a network at the visit place. In the embodiment of the invention, an MME determines a first address of an SGW and a second address of a P-SGW corresponding to a terminal accessing a visited network; the MME sends the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address; the embodiment of the invention provides a new network entity, realizes the network addressing function of the new network entity, and further the new network entity can transmit data on a data transmission path of a terminal at a visit place, thereby adding a new function for the network at the visit place.

Description

Data transmission method and equipment
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for data transmission.
Background
With the development of science and technology, terminals such as mobile phones and fixed phones are more and more important in our lives. The mobile phone, the fixed phone and other terminals are used for communication more and more conveniently, and the mobile phone, the fixed phone and other terminals can be used for communication no matter time or place.
When the terminal is not in the local domain, the terminal can still be used, the terminal belongs to a visiting place in the local domain, and when the terminal is used for contact, the terminal transmits data in the visiting place.
Currently, the mainstream international roaming scheme of Voice over Long Term Evolution (VoLTE) is S8HR, that is, a visited place only provides LTE (Long Term Evolution) and is actually accessed to an IMS (IP multimedia subsystem) in a home location.
If a new function for the accessed terminal needs to be added to the network at the visited place, a new network entity needs to be added to the path of the terminal for data transmission at the visited place, but no specific scheme exists for how to add the new network entity.
Disclosure of Invention
The invention provides a method and equipment for data transmission, which are used for solving the problem of how to add a new network entity on a path of data transmission of a terminal at a visit place when a new function is added to a visit place network.
The embodiment of the invention provides a data transmission method, which comprises the following steps:
an MME (Mobility Management Entity) determines a first address of an SGW (Serving GateWay) corresponding to a terminal accessed to a visited network and a second address of a P-SGW (Proxy-Serving GateWay);
and the MME sends the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
The embodiment of the invention provides a data transmission method, which comprises the following steps:
the SGW receives a second address of the P-SGW corresponding to the terminal accessing the visited network and sent by the MME;
and the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
The embodiment of the invention provides a data transmission method, which comprises the following steps:
after receiving paging information of a terminal from an SGW, a P-SGW determines a third address of a PGW (packet Data GateWay) of a home Network of the terminal;
and the P-SGW sends the paging information to a home network of the terminal according to the third address.
An embodiment of the present invention provides a device for data transmission, where the device includes: a processor and a transceiver:
the processor is used for determining a first address of a Service Gateway (SGW) corresponding to a terminal accessing a visited network and a second address of a proxy service gateway (P-SGW); and sending the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
An embodiment of the present invention provides a device for data transmission, where the device includes: a processor and a transceiver:
the processor is used for receiving a second address of a P-SGW corresponding to a terminal accessing the visited network and sent by the MME; and sending the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
An embodiment of the present invention provides a device for data transmission, where the device includes: a processor and a transceiver:
the processor is configured to determine a third address of a packet data gateway (PGW) of a home network of the terminal after receiving paging information from the SGW; and sending the paging information to a home network of the terminal according to the third address.
An embodiment of the present invention provides a device for data transmission, where the device includes:
the determining module is used for determining a first address of a Service Gateway (SGW) corresponding to a terminal accessing the visited network and a second address of a proxy service gateway (P-SGW);
a sending module, configured to send the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
An embodiment of the present invention provides a device for data transmission, where the device includes:
a receiving module: the second address of the P-SGW corresponding to the terminal accessing the visited network and sent by the MME is received;
a first sending module: and the home network is used for sending the paging information of the terminal to the terminal through the P-SGW corresponding to the second address.
An embodiment of the present invention provides a device for data transmission, where the device includes:
a second determining module, configured to determine, after receiving paging information from a terminal of an SGW, a third address of a packet data gateway PGW of a home network of the terminal;
and the second sending module is used for sending the paging information to a home network of the terminal according to the third address.
An embodiment of the present invention provides a device for data transmission, where the device includes: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the steps of any of the methods in a data transmission procedure of an MME; or performing the steps of the method by the SGW during data transmission; or to perform the steps of any of the methods described by the P-SGW during data transmission.
An embodiment of the present invention provides a storage medium of a computing device, including program code, when the program code runs on the computing device, the program code is configured to cause the computing device to execute any of the steps of the method in a data transmission process of an MME; or performing the steps of the method by the SGW during data transmission; or to perform the steps of any of the methods described by the P-SGW during data transmission.
In the embodiment of the invention, an MME determines a first address of an SGW and a second address of a P-SGW corresponding to a terminal accessing a visited network; the MME sends the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address; in the invention, after the terminal is determined to access the visited place, the MME acquires a first address of an SGW and a second address of a P-SGW corresponding to the terminal of the visited place network, then the MME sends the acquired second address to the first address of the SGW corresponding to the first address, and when the terminal sends paging information, the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address; the embodiment of the invention provides a new network entity, realizes the network addressing function of the new network entity, and further the new network entity can transmit data on a data transmission path of a terminal at a visit place, thereby adding a new function for the network at the visit place.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention;
fig. 2 is a diagram illustrating a new network entity being added for data transmission according to an embodiment of the present invention;
fig. 3 is a general schematic diagram of data transmission by adding a new network entity in the embodiment of the present invention;
fig. 4 is a schematic diagram of a new network entity processing data during data transmission according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first data transmission apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second data transmission apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a third data transmission apparatus according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a fourth apparatus for data transmission according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a fifth data transmission apparatus according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a sixth data transmission apparatus according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a seventh data transmission apparatus according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an eighth data transmission apparatus according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a ninth data transmission apparatus according to an embodiment of the present invention;
fig. 14 is a flowchart illustrating a first data transmission method according to an embodiment of the invention;
FIG. 15 is a flowchart illustrating a second data transmission method according to an embodiment of the invention;
FIG. 16 is a flowchart illustrating a third method for data transmission according to an embodiment of the present invention;
fig. 17 is a schematic overall flow chart of data transmission according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a system for data transmission, including:
a mobile management entity 10, configured to determine a first address of a serving gateway SGW and a second address of a proxy serving gateway P-SGW corresponding to a terminal accessing a visited network; and sending the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
The serving gateway 20 is configured to receive a second address of the P-SGW corresponding to the terminal accessing the visited network, where the second address is sent by the MME; and sending the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
The proxy service gateway 30 is configured to determine a third address of a PGW of a home network of a terminal after receiving paging information of the terminal from the SGW; and sending the paging information to a home network of the terminal according to the third address.
In the embodiment of the invention, an MME determines a first address of an SGW and a second address of a P-SGW corresponding to a terminal accessing a visited network; the MME sends the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address; in the invention, after the terminal is determined to access the visited place, the MME acquires a first address of an SGW and a second address of a P-SGW corresponding to the terminal of the visited place network, then the MME sends the acquired second address to the first address of the SGW corresponding to the first address, and when the terminal sends paging information, the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address; the embodiment of the invention provides a new network entity, realizes the network addressing function of the new network entity, and further the new network entity can transmit data on a data transmission path of a terminal at a visit place, thereby adding a new function for the network at the visit place.
The new network entity provided in the embodiment of the present invention is a P-SGW, and as shown in fig. 2, the SGW corresponding to the visited network terminal performs data transmission to the home network through the P-SGW.
Specifically, as shown in fig. 3, when a terminal enters a visited network, an MME initiates an inquiry to a DNS, inquires a first address corresponding to an SGW and a second address corresponding to a P-SGW, and sends the second address corresponding to the P-SGW to the SGW corresponding to the first address;
when the MME determines a first address of an SGW corresponding to a terminal accessing a visited network, the MME queries the first address of the corresponding SGW from a DNS (Domain Name System) according to a TAI (Tracking Aera Identity) of the terminal;
when the MME determines a second address of a P-SGW corresponding to a terminal accessing the visited Network, the MME queries the second address of the corresponding P-SGW from the DNS according to an access point IMS APN (IP multimedia subsystem access point name) of the terminal accessing the visited Network, OI (Operator Information) and NI (Network Information) of the terminal accessing the visited Network.
Specifically, when the MME queries the DNS for the first address corresponding to the SGW, the first address corresponding to the SGW is mainly queried according to TAI information of a terminal, and a relationship list between the TAI information of the terminal and the first address corresponding to the SGW is stored in the DNS, and one first address corresponding to the SGW corresponds to one TAI information of the terminal;
when the MME inquires the DNS about the second address corresponding to the P-SGW, the second address corresponding to the P-SGW is inquired mainly according to the character string of IMS APN + OI + NI, the DNS stores the analysis function of the character string of IMS APN + OI + NI, a relation list of the analysis result and the second address corresponding to the P-SGW exists, and the second address corresponding to the P-SGW can be obtained according to the analysis result of the DNS about the character string of IMS APN + OI + NI.
Optionally, the DNS is further configured with a view function, and according to the view function of the DNS, it may be determined which network entity sends the query instruction specifically, and according to the query instruction, an address that the entity needs to query is determined accurately.
Correspondingly, the SGW may send, according to a second address corresponding to the P-SGW, paging information of the terminal received through the evolved base station to the P-SGW corresponding to the second address;
after receiving the paging information, the P-SGW initiates a query to a DNS to query an address of a PGW in a home network, and after determining the address of the PGW in the home network, the P-SGW transmits the paging information to an IPX (internet Packet Exchange protocol, internet Packet switching protocol) through a router according to the determined address, and sends the address of the PGW in the home network.
Wherein the router may be a BG (Border Gateway).
And the P-SGW sends the call to the PGW in the home network, and data transmission is mainly carried out through a roaming S8 interface.
In implementation, after the terminal accesses a visited place, the MME can accurately query the first address of the SGW corresponding to the TAI from the DNS according to the TAI of the terminal, and the MME can accurately query the second address of the corresponding P-SGW from the DNS according to the string of IMS APN + OI + NI, so that when there is paging information in the terminal, the SGW can accurately send the paging information to the P-SGW.
Optionally, when the P-SGW determines the third address of the PGW of the home network of the terminal, the P-SGW queries the third address of the PGW of the home network of the terminal from the DNS according to the access point IMS APN to which the terminal accesses the visited network and the OI and NI to which the terminal accesses the visited network.
Specifically, the P-SGW initiates query to the DNS according to the access point IMS APN of the terminal access visited area network and the character strings of IMS APN + OI + NI consisting of OI and NI of the access visited area network, and the DNS determines the third address of the PGW of the terminal home area network according to the analysis result of the character strings because the DNS is provided with the analysis function of the character strings of the IMS APN + OI + NI.
Optionally, the DNS is further configured with a view function, and according to the view function of the DNS, it may be determined which network entity sends the query instruction specifically, and according to the query instruction, an address that the entity needs to query is determined accurately.
The query instruction may be a character string of IMS APN + OI + NI sent by the P-SGW; an IMS APN + OI + NI character string sent by the MME; TAI sent by MME.
In implementation, the P-SGW initiates an inquiry to the DNS according to the character string, and may inquire an address of the PGW of the home network of the terminal from the DNS, so that the SGW may accurately send paging information to the PGW through the P-SGW.
In the embodiment of the present invention, the P-SGW not only adds a routing function, but also adds other new functions to the visited network, such as service awareness capability of the terminal, detection processing of signaling, and the like, which are described below.
Optionally, after receiving paging information from a terminal of the SGW, the P-SGW parses the paging information; determining a service type according to the analyzed message type in the paging information; and performing call ticket processing according to the determined service type.
Specifically, when the terminal accesses a visited network, an MME determines a first address of the SGW and a second address of the P-SGW, and sends the second address to the SGW corresponding to the first address, when the terminal performs paging, the SGW sends paging information to the P-SGW corresponding to the second address, and after receiving the paging information from the SGW, the P-SGW analyzes the paging information, determines a corresponding service type according to a message type in the analyzed paging information, and then performs processing on a ticket according to the determined service type.
The analyzing of the paging information is mainly performed in a GTP (GPRS Tunneling Protocol) channel.
As shown in fig. 4, after the P-SGW receives the paging information from the SGW, the paging information may pass through a GTP tunnel, and at this time, the P-SGW analyzes the received paging information in the GTP tunnel, analyzes the paging information into a corresponding signaling message, determines what specific service type is for the message type in the analyzed paging information, finally performs ticket processing according to the service type, and sends the processed ticket to an OCS (Online Charging System).
Wherein, the service types include but are not limited to the following part or all:
voice service, short message service.
The processing of the call ticket according to the determined service type mainly comprises generating the call ticket according to the time of invite, 200OK and bye contained in the analyzed paging information.
When entering the P-SGW, the paging information can be converted into a GTP data packet, and the GTP data packet is analyzed during analysis.
In the implementation, the P-SGW analyzes the paging information sent by the SGW, determines the service type of the analyzed paging information, and processes the call ticket according to the service type, so that the visited network can sense the service and process the call ticket.
Optionally, after receiving the paging information from the terminal of the SGW, and before sending the paging information to the home network of the terminal according to the third address, the P-SGW determines whether the paging information is encrypted according to a message header of an SIP signaling obtained through parsing;
if the paging information is determined to be encrypted, discarding the paging information; and if the paging information is not encrypted, sending the paging information to a home network corresponding to the terminal.
Specifically, when the terminal accesses a visited network, an MME determines a first address of the SGW and a second address of the P-SGW, and sends the second address to an SGW corresponding to the first address, when the terminal performs paging, the SGW sends paging information to the P-SGW corresponding to the second address, and after receiving the paging information from the SGW, the P-SGW analyzes the paging information to obtain an SIP signaling, and the P-SGW determines, according to a message header of the SIP signaling, whether the paging information is encrypted by the SIP signaling obtained through analysis, and processes the paging information according to a determination result; if the paging information is determined to be encrypted, discarding the paging information; and if the paging information is not encrypted, sending the paging information to a home network.
Determining whether the paging information is encrypted according to whether the header in the SIP signaling carries fields such as an ESP (Encapsulating Security Payload) or not; if fields such as ESP exist, the paging information is discarded after the paging information is determined to be the encrypted message.
As shown in fig. 4, after the P-SGW receives the paging information from the SGW, the paging information may pass through a GTP tunnel, and at this time, the P-SGW parses the received paging information in the GTP tunnel, parses the paging information into a corresponding SIP signaling message, and sends the SIP signaling message to an encryption detection module in the P-SGW, where the encryption detection module determines whether the paging information is encrypted according to a message header of the SIP signaling message, and performs a packet loss indication on the encrypted paging information, that is, discards the encrypted paging information.
In implementation, the P-SGW determines whether the paging information is encrypted according to the message header of the SIP signaling obtained by parsing, processes the paging information according to a determination result, discards the encrypted paging information, and transmits the unencrypted paging information to the PGW of the home network, so that the home network of the terminal can receive accurate paging information, and the P-SGW determines the paging information to discard the encrypted information, thereby reducing the transmission amount of information and saving resources.
As shown in fig. 5, an apparatus for data transmission according to an embodiment of the present invention includes: processor 400 and transceiver 501:
the processor 500 is configured to determine a first address of a serving gateway SGW and a second address of a proxy serving gateway P-SGW corresponding to a terminal accessing a visited network; and sending the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
The processor 500 is specifically configured to:
according to the tracking area identification TAI of the terminal, inquiring a first address of a corresponding SGW from a Domain Name System (DNS);
and the MME accesses the OI and NI of the visited place network according to the access point IMS APN of the terminal access visited place network, and inquires the second address of the corresponding P-SGW from the DNS.
As shown in fig. 6, an apparatus for data transmission according to an embodiment of the present invention includes:
a determining module 600, configured to determine a first address of a serving gateway SGW and a second address of a proxy serving gateway P-SGW corresponding to a terminal accessing a visited network;
the sending module 601: and the SGW is configured to send the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
Optionally, the determining module 600 is specifically configured to:
according to the tracking area identification TAI of the terminal, inquiring a first address of a corresponding SGW from a Domain Name System (DNS);
and inquiring a second address of the corresponding P-SGW from the DNS according to the access point IMS APN of the terminal access visited place network and the OI and NI of the terminal access visited place network.
As shown in fig. 7, an apparatus for data transmission according to an embodiment of the present invention includes: at least one processing unit 700 and at least one memory unit 701, wherein the memory unit 701 stores program code which, when executed by the processing unit 700, causes the processing unit 700 to perform the steps of any of the methods in a data transmission procedure of an MME.
As shown in fig. 8, an apparatus for data transmission according to an embodiment of the present invention includes: a processor 800 and a transceiver 801;
the processor 800 is configured to receive a second address of a P-SGW corresponding to a terminal accessing a visited network, where the second address is sent by an MME; and sending the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
As shown in fig. 9, an apparatus for data transmission according to an embodiment of the present invention includes:
a receiving module 900, configured to receive a second address of the P-SGW corresponding to the terminal accessing the visited network, where the second address is sent by the MME;
a first sending module 901, configured to send the paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address.
As shown in fig. 10, an apparatus for data transmission according to an embodiment of the present invention includes: at least one processing unit 1000 and at least one memory unit 1001, wherein the memory unit 1001 stores program code, which when executed by the processing unit 1000 causes the processing unit 1000 to perform the steps of any of the methods of the SGW during data transmission.
As shown in fig. 11, an apparatus for data transmission according to an embodiment of the present invention includes: processor 1100 and transceiver 1101:
the processor 1100 is configured to determine, after receiving paging information of a terminal from an SGW, a third address of a packet data gateway PGW of a home network of the terminal; and sending the paging information to a home network of the terminal according to the third address.
As shown in fig. 12, an apparatus for data transmission according to an embodiment of the present invention includes:
a second determining module 1200, configured to determine, after receiving paging information from a terminal of an SGW, a third address of a packet data gateway PGW of a home network of the terminal;
a second sending module 1201, configured to send the paging information to a home network of the terminal according to the third address.
Optionally, the second determining module 1200 is specifically configured to:
and inquiring a third address of a PGW of a home network of the terminal from the DNS according to the access point IMS APN of the terminal access visited network and the OI and NI of the access visited network.
Optionally, the second determining module 1200 is further configured to:
analyzing the paging information; determining a service type according to the analyzed message type in the paging information; and performing call ticket processing according to the determined service type.
Optionally, the second sending module 1201 is further configured to:
and determining that the paging information is not encrypted according to a message header of SIP (Session Initiation Protocol) signaling obtained by analysis.
Optionally, the second sending module 1201 is further configured to:
and if the paging information is determined to be encrypted according to the message header of the SIP signaling obtained by analysis, discarding the paging information.
As shown in fig. 13, an apparatus for data transmission according to an embodiment of the present invention includes: at least one processing unit 1300 and at least one storage unit 1301, wherein the storage unit 1301 stores program code, and when the program code is executed by the processing unit 1300, the program code causes the processing unit 1300 to execute the steps of any one of the methods of the P-SGW during data transmission.
In some possible implementations, various aspects of data transmission provided by the embodiments of the present invention can also be implemented in the form of a program product including program code for causing a computer device to perform the steps of the method for data transmission according to various exemplary implementations of the present invention described in this specification when the program code runs on the computer device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A program product for data forwarding control according to an embodiment of the present invention may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a server device. However, the program product of the present invention is not limited thereto, and in this document, the readable storage medium may be any tangible medium containing or storing the program, which can be used by or in connection with an information transmission, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the periodic network action system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device.
The embodiment of the invention also provides a storage medium readable by the computing equipment aiming at the data transmission method, namely, the content is not lost after the power is off. The storage medium stores therein a software program comprising program code which, when executed on a computing device, when read and executed by one or more processors, implements the aspects of any of the MMEs in data transmission above the embodiments of the present invention.
The data transmission method of the embodiment of the invention also provides a storage medium readable by the computing equipment, namely, the content is not lost after power failure. The storage medium stores therein a software program comprising program code which, when read and executed by one or more processors, implements any of the above aspects of embodiments of the present invention in data transmission when the program code runs on a computing device.
The data transmission method of the embodiment of the invention also provides a storage medium readable by the computing equipment, namely, the content is not lost after power failure. The storage medium stores therein a software program, including program code, which when read and executed by one or more processors implements any of the above aspects of embodiments of the present invention in data transmission when the program code runs on a computing device.
Based on the same inventive concept, the embodiment of the present invention further provides a data transmission method, and since the device corresponding to the method is the method corresponding to the data transmission device in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the implementation of the method can refer to the implementation of the device, and repeated details are not repeated.
As shown in fig. 14, a method for data transmission according to an embodiment of the present invention specifically includes the following steps:
step 1400, the MME determines a first address of an SGW and a second address of a P-SGW corresponding to a terminal accessing the visited network;
step 1401, the MME sends the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to the home network of the terminal through the P-SGW corresponding to the second address.
Optionally, when the MME determines a first address of an SGW corresponding to a terminal accessing a visited network, the MME queries the first address of the corresponding SGW from a domain name system DNS according to a tracking area identity TAI of the terminal;
and when the MME determines the second address of the P-SGW corresponding to the terminal accessing the visited network, the MME queries the corresponding second address of the P-SGW from the DNS according to the access point IMS APN of the terminal accessing the visited network and the OI and NI of the visited network.
Based on the same inventive concept, the embodiment of the present invention further provides a data transmission method, and since the device corresponding to the method is the method corresponding to the data transmission device in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the implementation of the method can refer to the implementation of the device, and repeated details are not repeated.
As shown in fig. 15, a method for data transmission according to an embodiment of the present invention specifically includes the following steps:
step 1500, the SGW receives a second address of the P-SGW corresponding to the terminal accessing the visited network and sent by the MME;
step 1501, the SGW sends the paging information of the terminal to the home network of the terminal through the P-SGW corresponding to the second address.
Based on the same inventive concept, the embodiment of the present invention further provides a data transmission method, and since the device corresponding to the method is the method corresponding to the data transmission device in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the implementation of the method can refer to the implementation of the device, and repeated details are not repeated.
As shown in fig. 16, a method for data transmission according to an embodiment of the present invention specifically includes the following steps:
step 1600, after receiving the paging information from the terminal of the SGW, the P-SGW determines a third address of a packet data gateway PGW of a home network of the terminal;
and step 1601, the P-SGW sends the paging information to a home network of the terminal according to the third address.
Optionally, when the P-SGW determines the third address of the PGW of the home network of the terminal,
and the P-SGW inquires a third address of a PGW of a home network of the terminal from a DNS according to the access point IMS APN of the terminal access visited network and the OI and NI of the terminal access visited network.
Optionally, after receiving paging information from a terminal of the SGW, the P-SGW parses the paging information; determining a service type according to the analyzed message type in the paging information; and performing call ticket processing according to the determined service type.
Optionally, after receiving the paging information from the terminal of the SGW, and before sending the paging information to the home network of the terminal according to the third address, the P-SGW determines that the paging information is not encrypted according to the message header of the SIP signaling obtained through parsing.
Optionally, after the P-SGW receives the paging information from the SGW, if the P-SGW determines that the paging information is encrypted according to the message header of the SIP signaling obtained through parsing, the P-SGW discards the paging information.
As shown in fig. 17, the method for data transmission according to the embodiment of the present invention specifically includes the following steps:
step 1700, after the terminal accesses to the visited network, the MME initiates a query to the DNS according to the TAI of the terminal, and queries the first address of the SGW;
step 1701, the MME initiates a query to the DNS according to an access point IMS APN of the terminal access visited network, operator information OI and network information NI of the access visited network, and queries the second address of the P-SGW;
step 1702, the MME sending a second address of the P-SGW to the SGW corresponding to the first address;
step 1703, the SGW sends the paging information of the terminal to the P-SGW corresponding to the second address;
step 1704, after receiving the paging information, the P-SGW initiates a query to the DNS according to the access point IMS APN of the visited network to which the terminal is accessed, the operator information OI and the network information NI of the visited network, and queries the third address of the PGW;
step 1705, the P-SGW sends the paging information to a PGW corresponding to the third address.
The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (16)

1. A method of data transmission, the method comprising:
a mobile management entity MME inquires a first address of a corresponding service gateway SGW from a domain name system DNS according to a tracking area identification TAI of a terminal accessed to a visited network, and the MME inquires a second address of a corresponding proxy service gateway P-SGW from the DNS according to an access point IMS APN, operator information OI and network information NI of the terminal accessed to the visited network;
and the MME sends the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to a P-SGW corresponding to the second address, wherein the P-SGW is used for sending the paging information of the terminal to a home network of the terminal through a roaming S8 interface according to a third address of a packet data gateway (PGW) of the home network of the terminal.
2. A method of data transmission, the method comprising:
a Service Gateway (SGW) receives a second address of a proxy service gateway (P-SGW) corresponding to a terminal accessing an visited network, which is sent by a Mobile Management Entity (MME), wherein the second address is inquired from a Domain Name System (DNS) by the MME according to an access point (IMS APN) of the terminal accessing the visited network, Operator Information (OI) and Network Information (NI);
and the SGW sends the paging information of the terminal to a P-SGW corresponding to the second address, wherein the P-SGW is used for sending the paging information of the terminal to a home network of the terminal through a roaming S8 interface according to a third address of a packet data gateway (PGW) of the home network of the terminal.
3. A method of data transmission, the method comprising:
after receiving paging information of a terminal from a Service Gateway (SGW), a proxy service gateway (P-SGW) determines a third address of a packet data gateway (PGW) of a home network of the terminal; a first address of the SGW is inquired from a Domain Name System (DNS) by a Mobile Management Entity (MME) according to a Tracking Area Identity (TAI) of the terminal, a second address of the P-SGW is inquired from the DNS by the MME according to an access point (IMS APN) of a visited network accessed by the terminal, Operator Information (OI) and Network Information (NI), and the second address is sent to the SGW by the MME so that the SGW sends paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address;
and the P-SGW sends the paging information to a home network of the terminal through a roaming S8 interface according to the third address.
4. The method of claim 3, wherein the P-SGW determining a third address of a PGW of a home network of the terminal, comprises:
and the P-SGW inquires a third address of a PGW of a home network of the terminal from a DNS according to the access point IMS APN of the terminal access visited network and the OI and NI of the terminal access visited network.
5. The method of claim 3, wherein the P-SGW, upon receiving paging information from a terminal of the SGW, further comprises:
the P-SGW analyzes the paging information;
the P-SGW determines the service type according to the analyzed message type in the paging information;
and the P-SGW performs ticket processing according to the determined service type.
6. The method of claim 5, wherein the P-SGW, after receiving paging information from a terminal of the SGW, further comprises, before sending the paging information to a home network of the terminal according to the third address:
and the P-SGW determines that the paging information is not encrypted according to the message header of the SIP signaling obtained by analysis.
7. The method of claim 6, wherein the P-SGW, upon receiving paging information from a terminal of the SGW, further comprises:
and the P-SGW determines to discard the paging information if the paging information is encrypted according to the message header of the SIP signaling obtained by analysis.
8. An apparatus for data transmission, the apparatus comprising: a processor and a transceiver:
the processor is used for inquiring a first address of a corresponding Service Gateway (SGW) from a Domain Name System (DNS) according to a Tracking Area Identity (TAI) of a terminal accessed to a visited network, and inquiring a second address of a corresponding proxy service gateway (P-SGW) from the DNS according to an access point (IMS APN) of the terminal accessed to the visited network, Operator Information (OI) and Network Information (NI); and sending the second address to the SGW corresponding to the first address, so that the SGW sends the paging information of the terminal to the P-SGW corresponding to the second address, where the P-SGW is configured to send the paging information of the terminal to the home network of the terminal through a roaming S8 interface according to a third address of a packet data gateway PGW of the home network of the terminal.
9. An apparatus for data transmission, the apparatus comprising: a processor and a transceiver:
the processor is used for receiving a second address of a proxy service gateway P-SGW corresponding to a terminal accessing an visited network and sent by a mobile management entity MME, wherein the second address is inquired by the MME from a domain name system DNS according to an access point IMS APN, operator information OI and network information NI of the terminal accessing the visited network; and sending the paging information of the terminal to a P-SGW corresponding to the second address, wherein the P-SGW is used for sending the paging information of the terminal to a home network of the terminal through a roaming S8 interface according to a third address of a packet data gateway (PGW) of the home network of the terminal.
10. An apparatus for data transmission, wherein the apparatus is a proxy serving gateway P-SGW, comprising: a processor and a transceiver:
the processor is configured to determine a third address of a packet data gateway PGW of a home network of a terminal after receiving paging information of the terminal from a serving gateway SGW; a first address of the SGW is inquired from a Domain Name System (DNS) by a Mobile Management Entity (MME) according to a Tracking Area Identity (TAI) of the terminal, a second address of the P-SGW is inquired from the DNS by the MME according to an access point (IMS APN) of a visited network accessed by the terminal, Operator Information (OI) and Network Information (NI), and the second address is sent to the SGW by the MME so that the SGW sends paging information of the terminal to a home network of the terminal through the P-SGW corresponding to the second address;
and sending the paging information to the home network of the terminal through a roaming S8 interface according to the third address.
11. The device of claim 10, wherein the processor is specifically configured to:
and inquiring a third address of a PGW of a home network of the terminal from the DNS according to the access point IMS APN of the terminal access visited network and the OI and NI of the access visited network.
12. The device of claim 10, wherein the processor is further configured to:
analyzing the paging information; determining a service type according to the analyzed message type in the paging information; and performing call ticket processing according to the determined service type.
13. The device of claim 12, wherein the processor is further configured to:
and determining that the paging information is not encrypted according to the message header of the SIP signaling obtained by analysis.
14. The device of claim 13, wherein the processor is further configured to:
and if the paging information is determined to be encrypted according to the message header of the SIP signaling obtained by analysis, discarding the paging information.
15. An apparatus for data transmission, the apparatus comprising: at least one processing unit and at least one memory unit, wherein the memory unit stores program code which, when executed by the processing unit, causes the processing unit to perform the steps of the method of claim 1; or performing the steps of the method of claim 2; or to carry out the steps of the method according to any one of claims 3 to 7.
16. A computer-readable storage medium, characterized by program code means for causing a computer to carry out the steps of the method as claimed in claim 1 when said program code means are run on the computer; or the steps of the method of claim 2; or the steps of the method of any one of claims 3 to 7.
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