WO2015013922A1

WO2015013922A1 - Data transmission control method, apparatus and system for evolved packet system

Info

Publication number: WO2015013922A1
Application number: PCT/CN2013/080536
Authority: WO
Inventors: 何宁; 熊春山; 陈庆鸿; 朱雷
Original assignee: 华为技术有限公司
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2015-02-05
Also published as: CN104541566B; CN104541566A

Abstract

Disclosed are a data transmission control method, apparatus and system for an evolved packet system. The method comprises: a local S-GW acquiring an address of a peer P-GW by using an IP address of a communication peer; the local S-GW acquiring an address of a peer S-GW according to the acquired address of the peer P-GW; the local S-GW establishing a bearer with the peer S-GW according to the acquired address of the peer S-GW. In embodiments of the present invention, the local S-GW may acquire the address of the peer P-GW by using the IP address of the communication peer, acquire the address of the peer S-GW according to the address of the peer P-GW, and thereby establishing the bearer between the local S-GW and the peer S-GW, so that the data transmission does not need to use the P-GW, which optimizes routing, reduces the delay, and lowers the probability of communication interruption caused by single point of failure of the P-GW.

Description

One by one

Method, device and system for controlling data transmission of evolved packet system

The present invention relates to the field of wireless communications, and in particular, to a control method, apparatus, and system for data transmission in an evolved packet system. Background technique

The EPS (Evolved Packet System) consists of three parts: an Evolved Packet Core (EPC), an Evolved NodeB (eNB), and a User Equipment (UE). The eNB is responsible for accessing the network. The UE is a user terminal device, and the core network EPC is composed of an MME (Mobility Management Entity, Mobility Management Entity), a S-GW (Severing Gateway), a PDN Gateway (P-GW, Packet Data Network Gateway, a packet data network). The gateway is composed of a gateway, and the S-GW is a gateway that terminates the radio interface of the eNode B. The P-GW is a gateway that terminates the SGi interface facing the PDN. If the UE accesses multiple PDNs, the UE corresponds to one or more P-GWs.

In the existing EPS network, data is transmitted from the UE to the eNB through the radio bearer, transmitted from the eNB to the S-GW through the S1 bearer, and transmitted from the S-GW to the P-GW through the S5/S8 bearer, for example, UE1 and UE2 The data transmission path may be: UE1→eNB1→S-GW1→P-GW1→P-GW2→S-GW2→eNB2→UE2 (transmitted through different P-GWs) or UE1→eNBl—S-GW1 ^→ P - GW ^→ S-GW2 ^→ eNB2 → UE2 (transmitted by the same P-GW), where the bearer is a tunnel marked with an IP address and a tunnel end point ID (TEID). In the prior art, data is transmitted from the local end to the communication peer end through the P-GW, which increases the delay of data transmission, and the P-GW function is mainly used for lawful interception, charging, and data packets of the external PDN network. Filtering, etc., when it is not necessary to perform the functions of the above P-GW, the P-GW exhibits problems such as single point failure and routing redundancy. Summary of the invention

An embodiment of the present invention provides a method, a device, and a system for controlling data transmission of an evolved packet system, which are used to solve the problem that the data is transmitted from the local end to the communication selection in the prior art, and the P-GW is added. - - Delay in data transmission and problems such as single point of failure, routing redundancy, etc.

In order to solve the above technical problem, a first aspect of the embodiments of the present invention provides a method for controlling data transmission in an evolved packet system, including:

The local S-GW obtains the address of the peer P-GW by using the IP address of the peer end;

The local S-GW obtains the address of the peer S-GW according to the obtained address of the peer P-GW; the local S-GW obtains the address of the peer S-GW and the peer S-GW according to the obtained address. The GW establishes a bearer. In a first possible implementation manner of the first aspect, the local S-GW obtains an address of the peer P-GW by using an IP address of the communication peer, including:

The local S-GW obtains the address of the peer P-GW corresponding to the IP address of the communication peer from the local route.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the local S-GW obtains the peer end corresponding to the IP address of the communication peer end from the local route The address of the P-GW, including:

The local S-GW receives the data packet sent by the base station, and parses the data packet to obtain an IP address of the communication peer end;

The local S-GW queries the address of the corresponding peer P-GW in the local route according to the IP address of the communication peer.

In a third possible implementation manner of the first aspect, the local S-GW obtains an address of the peer P-GW by using an IP address of the communication peer end, and further includes:

The local S-GW obtains the address of the peer P-GW corresponding to the IP address of the communication peer from the service entity.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the local S-GW obtains an IP address corresponding to the communication peer end from the monthly service entity The address of the peer P-GW, including:

The local S-GW sends a query request to the service entity, where the query request includes:

IP address;

The local S-GW receives the address of the peer P-GW returned by the serving entity according to the query request. In a fifth possible implementation manner of the first aspect, before the local S-GW obtains the address of the peer P-GW by using the IP address of the communication peer, the method further includes: - - if the IP address of the communication peer is a public IP address that is translated by NAT, the IP address of the communication peer is converted into a private network IP address space;

The local S-GW obtains the address of the peer P-GW by using the IP address of the peer end, and includes: obtaining the address of the peer P-GW through the private IP address space of the communication peer.

In a sixth possible implementation manner of the first aspect, the local S-GW obtains an address of the peer S-GW according to the obtained address of the peer P-GW, and includes:

The local S-GW sends an address request to the peer P-GW according to the obtained address of the peer P-GW, where the address request includes: an IP address of the communication peer;

The local S-GW receives the address response returned by the peer P-GW according to the address request, and the address response includes: an IP address of the S5/S8 interface of the peer S-GW corresponding to the IP address of the communication peer.

With reference to the sixth possible implementation of the first aspect, in a seventh possible implementation manner of the first aspect, the address response further includes: an S5/S8 interface identifier of a tunnel end point of the peer S-GW; The local S-GW establishes a bearer according to the address of the obtained peer S-GW and the peer S-GW, and includes:

The local S-GW sends a bearer request to the peer S-GW, where the bearer request includes: the peer end

The S5/S8 interface IP address of the S-GW and the S5/S8 interface identifier of the tunnel end of the peer S-GW; the local S-GW receives the access response returned by the peer S-GW according to the bearer request. And establish a bearer with the peer S-GW.

With reference to the sixth possible implementation of the first aspect, in an eighth possible implementation manner of the first aspect, the address response further includes: an identifier of the communication peer end;

The local S-GW establishes a bearer according to the address of the obtained peer S-GW and the peer S-GW, and includes:

The local S-GW sends a bearer request to the peer S-GW, where the bearer request includes: an IP address of the S5/S8 interface of the peer S-GW and an identifier of the communication peer;

The local S-GW receives the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW returned by the peer S-GW according to the bearer request.

The local S-GW establishes a bearer with the peer S-GW according to the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW.

Correspondingly, the second aspect of the embodiments of the present invention further provides a control for data transmission of an evolved packet system. - - System, including:

a P-GW address obtaining module, configured to obtain an address of the peer P-GW by using an IP address of the communication peer end;

An S-GW address obtaining module, configured to acquire an address of the peer S-GW according to the address of the peer P-GW acquired by the P-GW address obtaining module;

The bearer establishing module is configured to establish a bearer according to the address of the peer S-GW acquired by the S-GW address obtaining module and the peer S-GW.

In a first possible implementation manner of the second aspect, the P-GW address obtaining module includes: a first acquiring unit, configured to acquire, from a local route, a peer P-GW corresponding to an IP address of the communication peer end the address of.

With reference to the first possible implementation of the second aspect, in a second possible implementation manner of the second aspect, the first acquiring unit includes:

a data processing subunit, configured to receive a data packet sent by the base station, and parse the data packet to obtain an IP address of the communication peer end;

The query subunit is configured to query the address of the corresponding peer P-GW in the local route according to the IP address of the communication peer end parsed by the data processing subunit.

In a third possible implementation manner of the second aspect, the P-GW address obtaining module further includes:

And a second obtaining unit, configured to obtain, from the service entity, an address of the peer P-GW corresponding to the IP address of the communication peer.

With reference to the third possible implementation of the second aspect, in a fourth possible implementation manner of the second aspect, the second acquiring unit includes:

The query request sending subunit is configured to send a query request to the service entity, where the query request includes: an IP address of the communication peer end;

The P-GW address receiving subunit is configured to receive an address of the peer P-GW returned by the serving entity according to the query request sent by the query request sending subunit.

In a fifth possible implementation manner of the second aspect, the device further includes:

The address conversion module is configured to convert the IP address of the communication peer to a private network IP address space when the IP address of the communication peer is a public IP address that is translated by NAT; - The P-GW address obtaining module is specifically configured to: obtain an address of the peer P-GW by using the private network IP address space of the communication peer end.

In a sixth possible implementation manner of the second aspect, the S-GW address obtaining module includes: an address request sending unit, configured to send, according to the obtained address of the peer P-GW, to the peer P-GW Sending an address request, where the address request includes: an IP address of the communication peer;

The address response receiving unit is configured to receive an address response returned by the peer P-GW according to the address request sent by the address request sending unit, where the address response includes: the peer S-GW corresponding to the IP address of the communication peer end IP address of the S5/S8 interface.

With reference to the sixth possible implementation of the second aspect, in a seventh possible implementation manner of the second aspect, the address response received by the address response receiving unit further includes: S5 of the tunnel end point of the peer S-GW /S8 interface identifier;

The bearer establishment module includes:

a bearer request sending unit, configured to send a bearer request to the peer S-GW, where the bearer request includes: an interface IP address of the S5/S8 of the peer S-GW and a tunnel endpoint of the peer S-GW S5/S8 interface identifier;

a receiving unit, configured to receive an access response returned by the peer S-GW according to the bearer request sent by the bearer request sending unit;

And a bearer establishing unit, configured to establish a bearer with the peer S-GW according to the access response received by the receiving unit.

With the sixth possible implementation of the second aspect, in an eighth possible implementation manner of the second aspect, the address response received by the address response receiving unit further includes: an identifier of the communication peer end; The unit is further configured to send a bearer request to the peer S-GW, where the bearer request includes: an S5/S8 interface IP address of the peer S-GW and an identifier of the communication peer end;

The receiving unit is further configured to receive an S5/S8 interface identifier of a tunnel endpoint of the peer S-GW returned by the peer S-GW according to the bearer request sent by the bearer request sending unit;

The bearer establishing unit is further configured to establish a bearer according to the S5/S8 interface identifier of the tunnel end point of the peer S-GW received by the receiving unit and the peer S-GW.

Correspondingly, a third aspect of the embodiments of the present invention provides a control system for data transmission of an evolved packet system, including a second aspect, a first possible implementation manner of the second aspect, and a second aspect of the second aspect. - a possible implementation, a third possible implementation of the second aspect, a fourth possible implementation of the second aspect, a fifth possible implementation of the second aspect, and a sixth aspect of the second aspect The local S-GW and the peer S-GW according to any one of the possible implementation manners, the seventh possible implementation manner of the second aspect, and the eighth possible implementation manner of the second aspect.

In the embodiment of the present invention, the local S-GW obtains the address of the peer P-GW, obtains the address of the peer S-GW through the peer P-GW address, and then the local S-GW and the opposite end S-GW. The bearer is established between the GWs, and the data transmission does not need to pass through the P-GW, which optimizes the routing, reduces the delay, and reduces the probability of communication interruption caused by the single point failure of the P-GW. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description For some embodiments of the present invention, other drawings may be obtained from those skilled in the art without departing from the drawings.

1 is a flowchart of a method for controlling data transmission of an evolved packet system according to an embodiment of the present invention; FIG. 2 is a flow chart of a method for controlling data transmission of an evolved packet system according to an embodiment of the present invention;

3 is a flow chart of still another method for controlling data transmission of an evolved packet system according to an embodiment of the present invention;

4 is a schematic structural diagram of a control apparatus for data transmission of an evolved packet system according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a P-GW address obtaining module according to an embodiment of the present invention;

6 is a schematic structural diagram of an S-GW address obtaining module according to an embodiment of the present invention;

7 is a schematic structural diagram of a bearer setup module according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a serving gateway S-GW according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of a specific application of a control system for data transmission of an evolved packet system according to an embodiment of the present invention. detailed description The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the present invention provides a method, a device, and a system for controlling data transmission in an evolved packet system. The evolved packet system EPS is composed of three parts: an EPC, an eNB, and a UE. The eNB is responsible for the access network part, and the UE is a user terminal equipment, and the core network. The EPC is composed of an MME, an S-GW, a P-GW, etc., the S-GW is a gateway that terminates the radio interface of the eNB, and the P-GW is a gateway that terminates the SGi interface facing the PDN. When the two UEs communicate with each other, the two UEs can be marked as the local end (MN, the initiator of the communication) and the communication peer end (the CN, the receiver of the communication), and the eNB on the local end side can be marked as The local eNB 1, the local eNB 2, the local eNB 3, and the like, the eNB of the communication peer may be marked as the communication peer eNB1, the communication peer eNB2, or the communication peer eNB3. The S-GWs in the core network EPC can be respectively marked as: the local S-GW and the peer S-GW, and the P-GWs in the core network EPC can be respectively marked as: the local P-GW and the opposite P- GW.

In the embodiment of the present invention, data is transmitted from the local UE to the local eNB through the radio bearer.

The S1 bearer is transmitted from the local eNB to the local S-GW, and the data is transmitted from the local S-GW to the opposite S-GW, and then transmitted from the opposite S-GW to the communication peer eNB, and transmitted from the communication peer eNB. To the communication peer UE, the data transmission does not need to pass through the P-GW, optimizes the routing, reduces the delay, and reduces the probability of communication interruption caused by the single point failure of the P-GW. The following description will be made by way of specific examples. 1 is a flowchart of a method for controlling data transmission in an evolved packet system according to an embodiment of the present invention. The embodiment of the present invention can be implemented in a monthly service gateway S-GW, and the process in this embodiment includes the following Steps:

Step S101: The local S-GW obtains the address of the peer P-GW by using the IP address of the communication peer. In a specific implementation, the data is transmitted from the local UE to the local eNB through the radio bearer, and is transmitted from the local eNB to the local S-GW through the SI bearer, where S1 is an interface between the eNB and the S-GW. The address of the peer P-GW is an address pre-configured at the local route or the serving gateway, and the configuration may be preset by the operator. The IP address of the peer end of the communication corresponds to the address of the peer P-GW. The local S-GW can obtain the address of the corresponding peer P-GW through the IP address of the peer end, which can be locally routed. - - Obtain the address of the peer P-GW, or obtain the address of the peer P-GW from the service gateway. Optionally, the IP address of the communication peer can be a specific IP address, an IP prefix, an address range, or a set of addresses. The address of the peer P-GW may be an IP address, an IP prefix, an address range, or a set of addresses of the peer P-GW.

Step S102: The local S-GW obtains the peer end according to the obtained address of the peer P-GW.

The address of the S-GW. In the specific implementation, the local S-GW obtains the address of the peer S-GW from the address of the peer P-GW to the peer P-GW. The address of the peer S-GW includes but is not limited to: the peer S-GW The IP address of the interface of the S5/S8 or the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW.

Specifically, obtaining, by the local S-GW, the address of the peer S-GW according to the obtained address of the peer P-GW may include:

The local S-GW sends an address request to the peer P-GW according to the obtained address of the peer P-GW, where the address request includes: an IP address of the communication peer.

The address request may further include: a local IP address, a local port number, a transport layer protocol, or a communication peer port number. The peer P-GW receives the address request, and according to the address request, can query the corresponding bearer identifier (EPS Bearer ID), the identifier of the corresponding communication peer end (IMSI), or the S5/S8 interface control plane GTP tunnel. IP and TEID, the peer P-GW returns an address response to the local S-GW according to the address request, and the address response includes the IP address of the S5/S8 interface of the peer S-GW corresponding to the IP address of the communication peer, and further Optionally, the address response may further include: an S5/S8 interface identifier of the tunnel endpoint of the peer S-GW, an identifier of the communication peer, or a bearer identifier.

Step S103: The local S-GW establishes a bearer according to the obtained address of the peer S-GW and the peer S-GW. Specifically, the local S-GW may establish a bearer according to the obtained address of the peer S-GW and the peer S-GW, where the local S-GW may include:

Further, the local S-GW obtains the address and the peer end of the peer S-GW according to the obtained end - -

The S-GW establishing the bearer may further include:

The local S-GW sends a bearer request to the peer S-GW, where the bearer request includes: an IP address of the S5/S8 interface of the peer S-GW and an identifier of the communication peer end;

The local S-GW receives the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW returned by the peer S-GW according to the connection request;

The local S-GW and the peer S-GW establish a bearer, and the data can be transmitted in the TEID tunnel between the local S-GW and the peer S-GW, so that the data can be directly transmitted from the local S-GW to the peer. The S-GW, which does not need to go through the P-GW placed at the highest position of the network architecture, is beneficial to the flat development of the network architecture and optimizes the routing.

An embodiment of the present invention provides a method for controlling data transmission in an evolved packet system. The local S-GW obtains the address of the peer P-GW, obtains the address of the peer S-GW through the peer P-GW address, and further The local S-GW establishes a bearer between the S-GW and the peer S-GW. The data transmission does not need to pass through the P-GW, optimizes the routing, reduces the delay, and reduces the probability of communication interruption caused by the single point failure of the P-GW. 2 is a flowchart of a method for controlling data transmission in an evolved packet system according to an embodiment of the present invention. The embodiment of the present invention may be implemented in a serving gateway S-GW. The process in this embodiment includes the following steps. :

Step S201: The local S-GW obtains the address of the peer P-GW corresponding to the IP address of the communication peer end from the local route. In a specific implementation, the local S-GW obtains the address of the peer P-GW corresponding to the IP address of the communication peer from the local route, and may include: the local S-GW receives the data packet sent by the base station, and parses the The data packet obtains the IP address of the peer end of the communication; the local S-GW queries the address of the corresponding peer P-GW in the local route according to the IP address of the communication peer. The address of the peer P-GW is pre-configured in the local route, and the configuration may be preset by the operator. The IP address of the peer end of the communication peer corresponds to the address of the peer P-GW. The local S-GW can obtain the address of the corresponding peer P-GW through the IP address of the peer end, and can obtain the peer P on the local route. -GW's address.

Step S202, the local S-GW sends the address of the peer P-GW to the peer P-GW according to the obtained address. - - Send an address request. The address request includes: an IP address of the communication peer.

Step S203: The local S-GW receives an address response returned by the peer P-GW according to the address request. The address response includes: an IP address of the S5/S8 interface of the peer S-GW corresponding to the IP address of the communication peer end, and an S5/S8 interface identifier of the tunnel end point of the peer S-GW. The IP address of the S5/S8 interface of the peer S-GW is the IP address of the GTP tunnel of the S5/S8 interface control plane allocated by the peer S-GW to the peer P-GW, and the tunnel endpoint of the peer S-GW. The S5/S8 interface identifier is the TEID of the GTP tunnel of the S5/S8 interface control plane allocated by the peer S-GW to the peer P-GW. S5 is the interface between the S-GW and the P-GW. The two NEs belong to the same PLMN or GTPv2-C. S5 corresponds to the internal interface of the network. S8 is an interface between the S-GW (roaming place) and the P-GW (home), and S8 corresponds to an interface when roaming between different operators.

Step S204: The local S-GW sends a bearer request to the peer S-GW according to the received address response. The bearer request includes: an interface IP address of the S5/S8 of the peer S-GW and an S5/S8 interface identifier of the tunnel endpoint of the peer S-GW.

Step S205: The local S-GW receives an access response returned by the peer S-GW according to the bearer request, and establishes a bearer with the peer S-GW. In a specific implementation, the peer S-GW receives the bearer request sent by the local S-GW, and reads the bearer request. After the matching succeeds, the peer S-GW sends an access response to the local S-GW, and the local S-GW receives the peer end. The access response sent by the S-GW is established with the peer S-GW.

An embodiment of the present invention provides a method for controlling data transmission in an evolved packet system. The local S-GW obtains the address of the peer P-GW from the local route, and obtains the peer S-GW through the peer P-GW address. The address is further established between the local S-GW and the peer S-GW. The data transmission does not need to pass through the P-GW, which optimizes the routing, reduces the delay, and reduces the communication interruption caused by the single point failure of the P-GW. The probability. FIG. 3 is a flowchart of a method for controlling data transmission in an evolved packet system according to an embodiment of the present invention. The embodiment of the present invention may be implemented in an S-GW, and the process in this embodiment includes the following - - Steps:

Step S301: If the IP address of the communication peer is a public IP address that is translated by NAT, the IP address of the communication peer is converted into a private network IP address space. In the specific implementation, if the local end communicates with the public IP address of the communication peer, and the communication peer uses the private network IP address in the communication process, the data packet is transmitted from the local UE to the local eNB through the radio bearer. The SI bearer is transmitted from the local eNB to the local S-GW. The IP address of the communication peer included in the data packet is the public IP address. When the local S-GW recognizes that the IP address of the communication peer is NAT (Network Address) Translator, network address translation) converts the public IP address of the communication peer to the private network IP address space. The private IP address space of the communication peer can be a specific IP address, an IP prefix, an address range, or A collection of addresses, etc.

Step S302: The local S-GW obtains, from the service entity, the address of the peer P-GW corresponding to the private network IP address space of the communication peer. In a specific implementation, the local S-GW obtains the address of the peer P-GW corresponding to the IP address of the communication peer from the serving entity (Server), which may include: the local S-GW sends a query request to the service entity. The query request includes: a private network IP address space of the communication peer; the local S-GW receives an address of the peer P-GW returned by the service entity according to the query request. The address of the peer P-GW is pre-configured in the service entity, and the configuration may be preset by the operator. The IP address of the peer end of the communication peer corresponds to the address of the peer P-GW. The local S-GW can obtain the address of the corresponding peer P-GW through the IP address of the peer end, and can obtain the peer end in the service entity. The address of the P-GW.

Step S303: The local S-GW sends an address request to the peer P-GW according to the obtained address of the peer P-GW. The address request includes: a private network IP address space of the communication peer.

Step S304, the local S-GW receives an address response returned by the peer P-GW according to the address request. The address response includes: an IP address of the S5/S8 interface of the peer S-GW corresponding to the private network IP address space of the communication peer end, and an identifier of the communication peer end. The IP address of the S5/S8 interface of the peer S-GW is the IP address of the GTP tunnel of the S5/S8 interface control plane allocated by the peer S-GW to the peer P-GW.

Step S305: The local S-GW sends a bearer request to the peer S-GW according to the received address response. The bearer request includes: an S5/S8 interface IP address of the peer S-GW and an identifier of the communication peer end. - Step S306, the local S-GW receives the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW returned by the peer S-GW according to the bearer request. In a specific implementation, the peer S-GW receives the bearer request sent by the local S-GW, reads the bearer request, and returns the S5/S8 interface of the tunnel endpoint of the peer S-GW to the local S-GW after the matching succeeds. Logo.

Step S307: The local S-GW establishes a bearer with the peer S-GW according to the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW. In the specific implementation, the local S-GW receives the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW sent by the peer S-GW, and establishes a bearer with the peer S-GW.

An embodiment of the present invention provides a method for controlling data transmission in an evolved packet system, which can convert a public network IP address of a communication peer end into a private network IP address space, and obtain a pair from a service entity by using a private network IP address space of the communication peer end. The address of the end p-GW is obtained by the address of the peer S-GW through the peer P-GW address, and the bearer is established between the local S-GW and the peer S-GW. The data transmission does not need to pass through the P-GW. Optimized routing, reduced latency, and reduced the probability of communication interruption due to a single point of failure of the P-GW. 4 is a schematic structural diagram of a control apparatus for data transmission of an evolved packet system according to an embodiment of the present invention. The embodiment of the present invention can implement the evolved packet system data in the serving gateway S-GW as shown in this embodiment. The control device for transmission may include: a P-GW address obtaining module 401, an S-GW address obtaining module 402, and a bearer establishing module 403.

The P-GW address acquisition module 401 is configured to obtain an address of the peer P-GW by using an IP address of the communication peer. In a specific implementation, the data is transmitted from the local UE to the local eNB through the radio bearer, and is transmitted from the local eNB to the local S-GW through the SI bearer, where S1 is an interface between the eNB and the S-GW. The address of the peer P-GW is an address pre-configured at the local route or the serving gateway, and the configuration may be preset by the operator. The IP address of the peer end corresponds to the address of the peer P-GW. The local S-GW can obtain the address of the corresponding peer P-GW through the IP address of the peer. Optionally, the IP address of the communication peer can be a specific IP address, an IP prefix, an address range, or an address. - - Collections, etc. The address of the peer P-GW may be an IP address, an IP prefix, an address range, or a set of addresses of the peer P-GW.

Further, FIG. 5 is a schematic structural diagram of a P-GW address obtaining module in the embodiment of the present invention. As shown in FIG. 5, the P-GW address obtaining module 401 may include: a first acquiring unit 4011 and a second acquiring unit. 4012.

The first obtaining unit 4011 is configured to obtain, from the local route, an address of the peer P-GW corresponding to the IP address of the communication peer. Specifically, as shown in FIG. 5, the first obtaining unit 4011 may include: a data processing subunit 40111 and a query subunit 40112, where:

a data processing subunit 40111, configured to receive a data packet sent by the base station, and parse the data packet to obtain an IP address of the communication peer end;

The query sub-unit 40112 is configured to query the address of the corresponding peer P-GW in the local route according to the IP address of the communication peer parsed by the data processing sub-unit 40111.

The second obtaining unit 4012 is configured to obtain, from the service entity, an address of the peer P-GW corresponding to the IP address of the communication peer. Specifically, as shown in FIG. 5, the second obtaining unit 4012 may include: a query request sending subunit 40121 and a P-GW address receiving subunit 40122. among them:

The query request sending subunit 40121 is configured to send a query request to the monthly service entity, where the query request includes: an IP address of the communication peer end;

The P-GW address receiving subunit 40122 is configured to receive an address of the peer P-GW returned by the serving entity according to the query request sent by the query request sending subunit 40121.

The S-GW address obtaining module 402 is configured to obtain an address of the peer S-GW according to the address of the peer P-GW acquired by the P-GW address obtaining module 401. In the specific implementation, the local S-GW obtains the address of the peer S-GW from the peer P-GW through the address of the peer P-GW. The address of the peer S-GW includes but is not limited to: the peer S-GW The IP address of the interface of the S5/S8 or the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW.

Further, FIG. 6 is a schematic structural diagram of an S-GW address obtaining module in the embodiment of the present invention. As shown in FIG. 6, the S-GW address obtaining module 402 may include: an address request sending unit 4021 and an address response receiving unit. 4022, where:

The address request sending unit 4021 is configured to send an address request to the peer P-GW according to the obtained address of the peer P-GW, where the address request includes: an IP address of the communication peer. - an address response receiving unit 4022, configured to receive an address response returned by the peer P-GW according to the address request sent by the address request sending unit 4021, where the address response includes: a pair corresponding to the IP address of the communication peer IP address of the S5/S8 interface of the S-GW.

The address request may further include: a local IP address, a local port number, a transport layer protocol, or a communication peer port number. The peer P-GW receives the address request, and according to the address request, can query the corresponding bearer identifier (EPS Bearer ID), the identifier of the corresponding communication peer end (IMSI), or the S5/S8 interface control plane GTP tunnel. IP and TEID, the peer P-GW returns an address response to the local S-GW according to the address request, and the address response includes the IP address of the S5/S8 interface of the peer S-GW corresponding to the IP address of the communication peer, and further Optionally, the address response may further include: an S5/S8 interface identifier of the tunnel endpoint of the peer S-GW, an identifier of the communication peer, or an identifier.

The bearer establishing module 403 is configured to establish a bearer according to the obtained address of the peer S-GW and the peer S-GW. In a specific implementation, the bearer is established according to the obtained address of the peer S-GW and the peer S-GW. After the local S-GW establishes a bearer with the peer S-GW, the data can be at the local S-GW and the peer. The TEID tunnel is transmitted between the S-GWs, so that the data can be directly transmitted from the local S-GW to the peer S-GW without going through the P-GW placed at the highest position of the network architecture, which is beneficial to the flat development of the network architecture. , optimized routing.

Further, FIG. 7 is a schematic structural diagram of a bearer setup module in the embodiment of the present invention. As shown in FIG. 7, the bearer setup module 403 may include a bearer request sending unit 4031, a receiving unit 4032, and a bearer establishing unit 4033.

When the address response received by the address response receiving unit 4022 includes: the IP address of the S5/S8 interface of the peer S-GW corresponding to the IP address of the communication peer end and the S5/S8 interface identifier of the tunnel end point of the peer S-GW, The IP address of the S5/S8 interface of the peer S-GW and the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW are established for 7 years. specific:

The bearer request sending unit 4031 is configured to send a bearer request to the peer S-GW, where the bearer request includes: an interface IP address of the S5/S8 of the peer S-GW and a tunnel endpoint of the peer S-GW S5/S8 interface identifier.

The receiving unit 4032 is configured to receive an access response returned by the peer S-GW according to the bearer request sent by the bearer request sending unit 4031.

a bearer establishing unit 4033, configured to receive, according to the access response received by the receiving unit 4032, a peer end - -

The S-GW establishes a bearer.

Further, optionally, the address response received by the address response receiving unit 4022 includes: an IP address of the S5/S8 interface of the peer S-GW corresponding to the IP address of the communication peer end, and an identifier of the communication peer end, with the peer S-GW The IP address of the S5/S8 interface and the identifier of the communication peer establish a bearer. Specifically, the request sending unit 4031 is further configured to send a request to the peer S-GW, where the request includes: the peer end The IP address of the S5/S8 interface of the S-GW and the identifier of the communication peer.

The receiving unit 4032 is further configured to receive an S5/S8 interface identifier of the tunnel endpoint of the peer S-GW returned by the peer S-GW according to the bearer request sent by the bearer request sending unit 4031.

The bearer establishing unit 4033 is further configured to establish, according to the S5/S8 interface identifier of the tunnel end point of the peer S-GW received by the receiving unit 4032, with the peer S-GW.

Further, optionally, the control device for data transmission of the evolved packet system in this embodiment may further include:

The address translation module 404 is configured to convert the IP address of the communication peer to a private network IP address space when the IP address of the communication peer is a public IP address that is translated by NAT. In the specific implementation, if the local end communicates with the public IP address of the communication peer, and the communication peer uses the private network IP address in the communication process, the data packet is transmitted from the local UE to the local eNB through the radio bearer. The S1 bearer is transmitted from the local eNB to the local S-GW. The IP address of the communication peer included in the data packet is the public IP address. When the local S-GW identifies the IP address of the communication peer as the NAT-transformed public When the IP address is used, the IP address of the communication peer is translated into the private IP address space. The private IP address of the peer can be a specific IP address, an IP prefix, an address range, or an address set.

Further, the P-GW address obtaining module 401 obtains the address of the peer P-GW by using the IP address of the peer end, and is specifically configured to: obtain the address of the peer P-GW through the private network IP address space of the communication peer end. .

The embodiment of the present invention provides a control device for data transmission of an evolved packet system. The local S-GW can obtain the address of the peer P-GW from the local routing or service entity, and obtain the peer S through the peer P-GW address. - The address of the GW, and the bearer is established between the local S-GW and the peer S-GW. The data transmission does not need to pass through the P-GW, optimizes the routing, reduces the delay, and reduces the single point fault caused by the P-GW. The probability of communication disruption. Further, optionally, the control system for the data transmission of the evolved packet system in the embodiment of the present invention may include: the local S-GW and the peer S-GW as described in any of FIG. 4 to FIG. Further, optionally, the control system for data transmission of the evolved packet system in the embodiment of the present invention may further include: a P-GW or a service entity.

FIG. 8 is a schematic diagram of a specific embodiment of a control system for data transmission of an evolved packet system according to an embodiment of the present invention. The control system for data transmission of an evolved packet system according to an embodiment of the present invention includes a local user UE1 and a communication pair. The end user UE2, the local base station eNB1, the local base station eNB2, the communication peer base station eNB3, the communication peer base station eNB4, the local S-GW, the opposite S-GW, and the P-GW. The data is transmitted from the local user UE1 to the local base station eNB1 through the radio bearer, and then transmitted from the local base station eNB1 to the local S-GW. The local S-GW obtains the address of the opposite P-GW through the IP address of the communication peer. Acquiring an address of the peer S-GW according to the obtained address of the peer P-GW, and establishing a bearer according to the obtained address of the peer S-GW and the peer S-GW, thereby data from the local end The S-GW transmits to the peer S-GW, and the data is transmitted from the peer S-GW to the communication peer base station eNB4, and finally the data is transmitted from the communication peer eNB4 to the communication peer UE2. The data transmission does not need to pass through the P-GW, optimizes the routing, reduces the delay, and reduces the probability of communication interruption caused by the single point of failure of the P-GW. FIG. 9 is a schematic structural diagram of a serving gateway S-GW according to an embodiment of the present invention. The method shown in any of FIG. 1 to FIG. 3 can be implemented in a monthly service gateway S-GW. In this embodiment, the monthly service gateway S The -GW may include: a processor 901, a memory 902, an S1 interface 903, and an S5/S8 interface 904, where:

The processor 901 is configured to obtain an address of the peer P-GW by using an IP address of the peer end; the processor 901 is further configured to obtain an address of the peer S-GW according to the obtained address of the peer P-GW;

The processor 901 is further configured to establish a bearer according to the obtained address of the peer S-GW and the peer S-GW.

Optionally, the processor 901 is further configured to: obtain, from the local route, an address of the peer P-GW corresponding to the IP address of the communication peer.

Optionally, the S1 interface 903 is configured to receive a data packet sent by the base station. The processor 901 is further configured to parse the data packet received by the S1 interface 903 to obtain an IP address of the communication peer end, and query the address of the corresponding peer P-GW in the local route according to the IP address of the communication peer end. - Optionally, the processor 901 obtains the address of the peer P-GW by using the IP address of the communication peer end, and is specifically used to: obtain the peer P-GW corresponding to the IP address of the communication peer end from the monthly service entity address.

Optionally, the S1 interface 903 is configured to send a query request to the service entity, where the query request includes: an IP address of the communication peer.

Optionally, the S1 interface 903 is further configured to receive a peer that is returned by the service entity according to the query request.

The address of the P-GW.

Optionally, the processor 901 is further configured to: when the IP address of the communication peer is a public IP address that is translated by NAT, convert the IP address of the communication peer into a private network IP address space, and further The private IP address space of the peer end of the communication acquires the address of the peer P-GW.

Optionally, the S5/S8 interface 904 is configured to send an address request to the peer P-GW according to the address of the peer P-GW that is obtained by the processor 901, where the address request includes: an IP address of the communication peer.

Optionally, the S5/S8 interface 904 is further configured to receive an address response that is returned by the peer P-GW according to the address request, where the address response includes: the peer S-GW corresponding to the IP address of the communication peer end IP address of the S5/S8 interface.

Optionally, when the address response received by the S5/S8 interface 904 further includes: the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW, the S5/S8 interface 904 is further configured to send to the peer S-GW. The bearer request, the bearer request includes: an interface IP address of the S5/S8 of the peer S-GW and an S5/S8 interface identifier of the tunnel endpoint of the peer S-GW.

The S5/S8 interface 904 is further configured to receive an access response returned by the peer S-GW according to the bearer request.

The processor 901 is specifically configured to establish a bearer according to the access response received by the S5/S8 interface 904 and the peer S-GW.

Optionally, when the address response received by the S5/S8 interface 904 further includes: the identifier of the communication peer, the S5/S8 interface 904 is further configured to send a bearer request to the peer S-GW, where the bearer request includes: The IP address of the S5/S8 interface of the peer S-GW and the identifier of the communication peer.

The S5/S8 interface 904 is further configured to receive the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW returned by the peer S-GW according to the bearer request.

The processor 901 is specifically configured to establish a bearer with the peer S-GW according to the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW received by the S5/S8 interface 904. - The memory 902 is used to store the data packet, the IP address of the communication peer, the address of the peer P-GW, and the address of the peer S-GW.

The serving gateway S-GW in this embodiment may include a bus 905. The processor 901, the memory 902, the S1 interface 903, and the S5/S8 interface 904 can be connected and communicated via the bus 905. The processor 901 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or the like. The memory 902 may include: a random access memory (RAM), a read-only memory (ROM), a disk and the like having a storage function.

The embodiment of the present invention provides a serving gateway S-GW, including: a processor, a memory, an S1 interface, and an S5/S8 interface, where the S-GW can obtain the address of the peer P-GW from the local routing or service entity, and The peer P-GW address obtains the address of the peer S-GW, and then establishes a bearer with the peer S-GW. The data transmission does not need to pass through the P-GW, optimizes the routing, reduces the delay, and reduces the P- Probability of communication interruption caused by GW single point of failure.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware implementation, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. By way of example and not limitation, computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure. The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media. As used in the present invention, a disk and a disc include a compact disc (CD), a laser disc, a disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. The above combination should also be included in the computer - - Within the protection of readable media.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Rights request

1. A control method for data transmission in an evolved packet system, characterized in that the method includes: the local serving gateway S-GW obtains the peer packet data network gateway through the IP address of the communication peer

P-GW address;

The local S-GW obtains the address of the opposite S-GW according to the obtained address of the opposite P-GW; The local S-GW obtains the address of the opposite S-GW according to the obtained address of the opposite S-GW and the opposite S-GW. GW establishes the bearer.

2. The method of claim 1, wherein the local S-GW obtains the address of the peer P-GW through the IP address of the communication peer, including:

3. The method of claim 2, wherein the local S-GW obtains the address of the peer P-GW corresponding to the IP address of the communication peer from a local route, including:

The local S-GW receives the data packet sent by the base station and parses the data packet to obtain the communication peer's

IP address;

The local S-GW searches the local route for the address of the corresponding peer P-GW based on the IP address of the communication peer.

4. The method of claim 1, wherein the local S-GW obtains the address of the peer P-GW through the IP address of the communication peer, and further includes:

5. The method of claim 4, wherein the local S-GW obtains the address of the peer P-GW corresponding to the IP address of the communication peer from the service entity, including:

The local S-GW sends a query request to the good service entity. The query request includes: the IP address of the communication peer;

The local S-GW receives the address of the opposite P-GW returned by the service entity according to the query request.

6. The method according to claim 1, characterized in that, before the local S-GW obtains the address of the peer P-GW through the IP address of the communication peer, it further includes: converting the IP address of the communication peer It is the private IP address space;

The local S-GW obtains the address of the peer P-GW through the IP address of the communication peer, including: obtaining the address of the peer P-GW through the private IP address space of the communication peer.

7. The method of claim 1, wherein the local S-GW obtains the address of the peer S-GW based on the obtained address of the peer P-GW, including:

The local S-GW sends an address request to the opposite P-GW according to the obtained address of the opposite P-GW. The address request includes: the IP address of the communication opposite end;

The local S-GW receives the address response returned by the peer P-GW according to the address request. The address response includes: the IP address of the S5/S8 interface of the peer S-GW corresponding to the IP address of the communication peer.

8. The method of claim 7, wherein the address response further includes: peer

S5/S8 interface identification of the S-GW tunnel endpoint;

The local S-GW establishes a bearer with the opposite S-GW based on the acquired address of the opposite S-GW, including:

The local S-GW sends a bearer request to the opposite S-GW. The bearer request includes: the S5/S8 interface IP address of the opposite S-GW and the S5/S8 tunnel endpoint of the opposite S-GW. S8 interface identifier; The local S-GW receives the access response returned by the opposite S-GW according to the bearer request, and establishes a bearer with the opposite S-GW.

9. The method of claim 7, wherein the address response further includes: an identification of the communication peer;

The local S-GW sends a bearer request to the opposite S-GW. The bearer request includes: the S5/S8 interface IP address of the opposite S-GW and the identification of the communication opposite end; The local S-GW receives the S5/S8 interface identifier of the tunnel endpoint of the opposite S-GW returned by the opposite S-GW according to the bearer request;

The local S-GW establishes a bearer with the opposite S-GW based on the S5/S8 interface identifier of the tunnel endpoint of the opposite S-GW.

10. A control device for evolved packet system data transmission, characterized in that the device includes: a P-GW address acquisition module, configured to obtain the address of the peer P-GW through the IP address of the communication peer;

The S-GW address acquisition module is configured to obtain the address of the peer S-GW according to the address of the peer P-GW obtained by the P-GW address acquisition module;

A bearer establishment module is configured to establish a bearer with the opposite S-GW according to the address of the opposite S-GW obtained by the S-GW address acquisition module.

11. The device according to claim 10, wherein the P-GW address acquisition module includes:

The first obtaining unit is configured to obtain the address of the peer P-GW corresponding to the IP address of the communication peer from the local route.

12. The device according to claim 11, wherein the first acquisition unit includes: a data processing subunit, configured to receive data packets sent by the base station, and parse the data packets to obtain the IP address of the communication peer;

The query subunit is configured to query the address of the corresponding peer P-GW in the local route according to the IP address of the communication peer parsed by the data processing subunit.

13. The device according to claim 10, wherein the P-GW address acquisition module further includes:

The second obtaining unit is configured to obtain the address of the peer P-GW corresponding to the IP address of the communication peer from the service entity.

14. The method of claim 13, wherein the second acquisition unit includes: a query request sending subunit, configured to send a query request to the service entity, where the query request includes: the IP address of the communication peer;

The P-GW address receiving subunit is configured to receive the address of the peer P-GW returned by the query request sent by the service entity according to the query request sending subunit.

15. The device according to claim 10, characterized in that, the device further includes: an address conversion module, configured to convert the communication when the IP address of the communication peer is a public network IP address that has been NAT converted. The peer IP address is converted into a private IP address space;

The P-GW address acquisition module is specifically used for:

Obtain the address of the peer P-GW through the private network IP address space of the communication peer.

16. The device according to claim 10, wherein the S-GW address acquisition module includes:

An address request sending unit, configured to send a request to the opposite end according to the acquired address of the opposite end P-GW.

The P-GW sends an address request, which includes: the IP address of the communication peer;

The address response receiving unit is configured to receive an address response returned by the peer P-GW according to the address request sent by the address request sending unit. The address response includes: the peer S-GW corresponding to the IP address of the communication peer. IP address of the S5/S8 interface.

17. The device according to claim 16, wherein the address response received by the address response receiving unit further includes: the S5/S8 interface identifier of the tunnel endpoint of the peer S-GW;

The bearer establishment module includes:

A bearer request sending unit, configured to send a bearer request to the opposite S-GW, where the bearer request includes: the S5/S8 interface IP address of the opposite S-GW and the tunnel endpoint of the opposite S-GW. S5/S8 interface identification;

A receiving unit, configured to receive an access response returned by the opposite end S-GW according to the bearer request sent by the bearer request sending unit;

A bearer establishment unit, configured to establish a connection with the peer S-GW based on the access response received by the receiving unit. carry.

18. The device according to claim 16, wherein the address response received by the address response receiving unit further includes: an identification of the communication peer;

The bearer request sending unit is also used to send a bearer request to the opposite end S-GW. The bearer request includes: the S5/S8 interface IP address of the opposite end S-GW and the identification of the communication opposite end;

The receiving unit is also configured to receive the S5/S8 interface identifier of the tunnel endpoint of the opposite S-GW returned by the bearer request sent by the bearer request sending unit;

The bearer establishing unit is also configured to establish a bearer with the opposite S-GW according to the S5/S8 interface identifier of the tunnel end point of the opposite S-GW received by the receiving unit.

19. A control system for evolved packet system data transmission, characterized by including the local S-GW and the opposite S-GW as described in any one of claims 10 to 18.