WO2012152147A1

WO2012152147A1 - Gtp-u tunnel error processing method and device

Info

Publication number: WO2012152147A1
Application number: PCT/CN2012/073159
Authority: WO
Inventors: 焦斌; 鲍炜
Original assignee: 电信科学技术研究院
Priority date: 2011-05-10
Filing date: 2012-03-28
Publication date: 2012-11-15
Also published as: CN102164364B; CN102164364A

Abstract

A General Packet Radio Service Tunnel Protocol User (GTP-U) tunnel error processing method and a device are provided. The method comprises: an agent node receives a GTP-U error indication sent by an agented node or a core network node, wherein an S1 User (S1-U) is respectively built between the agent node and the agented node and between the agent node and the core network node (S501); and the agent node disposes the GTP-U error indication according to the type of a control plane interface between the agent node and the agented node, wherein the different GTP-U tunnels are managed by different types of the control plane interfaces (S502). With the invention, the problem that the GTP-U error, which occurs after the agent node is introduced into the traditional system architecture, cannot be processed by an abnormal processing system is solved, thereby ensuring the stable running of a system.

Description

GTP-U tunnel error processing method and device The application request is submitted to the Chinese Patent Office on May 10, 2011, the application number is 201110119674.X, and the invention name is

The priority of the Chinese Patent Application for "GTP-U Tunnel Error Handling Method and Apparatus" is hereby incorporated by reference in its entirety. The present invention relates to the field of wireless communication technologies, and in particular, to a GTP user plane tunnel error processing method and apparatus. Background Art In future mobile communication systems, such as B3G (Beyond Third Generation), or LTE-A

(Long Term Evolution-Adavance, the long-term evolution upgrade), the system will provide higher peak data rate and cell throughput, and also need more bandwidth. Currently, the unallocated bandwidth below 2GHz is very small, and the part required by the B3G system. Or the full bandwidth can only be found in higher frequency bands, such as above 3 GHz. The higher the frequency band, the faster the propagation of the radio wave is, and the shorter the transmission distance is. Therefore, in the same coverage area, more base stations are needed to ensure continuous coverage. Since the base station usually has a high cost, this will undoubtedly increase the cost of the network. Not suitable for a wide range of applications. In order to solve the problem of network cost and coverage, various vendors and standardization organizations began to study the introduction of RN (Relay Node) into the cellular system to increase coverage.

Figure 1 is a network architecture diagram of the LTE-A system after the RN is introduced. The RN accesses the core network through the donor cell under the DeNB ( Donor Evolved Node B, donor base station), and has no direct wired interface with the core network. Each RN can control one or more cells. In this architecture, the interface between the UE and the RN is called the Uu interface, and the interface between the RN and the DeNB is called the Un interface. The interface between the DeNB and the adjacent e B (Evolved NodeB) is called Χ2. interface.

A user plane S 1 -U tunnel for transmitting bearer data can be established on the S 1 interface, and a user plane X2-U tunnel for transmitting bearer data can be established on the Χ 2 interface. The Un-interface can establish a user plane S1-U tunnel that receives the bearer data transmitted by the S1 interface and sends the bearer data to the S1 interface; and establishes a user plane X2- that receives the bearer data transmitted by the X2 interface and sends the bearer data to the X2 interface. U tunnel.

According to 3GPP TS 36.300, the user planes S1-U and X2-U protocol stacks are introduced as shown in FIG. 2 and FIG. The S1-U tunnel on the Un interface and the S1-U tunnel on the S1 interface are connected in series to form part of the EPS (Evolved Packet System) bearer. For the downlink data, the DeNB receives the GTP (General Packet Radio Service Tunnel Protocol) received from the S-GW (Serving Gateway) through the S1-U tunnel of the S1 interface. The General Packet Radio Service Tunneling Protocol (PDU) is exchanged to the S1-U tunnel on the Un interface to complete the forwarding of the downlink user plane data, the forwarding process of the uplink user plane data, and the X2-U. The forwarding process, the DeNB uses a similar process.

Both the S1-U tunnel and the X2-U tunnel belong to the GTP-U tunnel. According to 3GPP TS23.007, the following mechanism is used for the user plane GTP-U (GTP User) exception handling.

e B uses the following processing methods for GTP-U exceptions:

If the eNB receives the GTP error indication from the SGW, the eNB will immediately initiate an E-RAB (Evolved Radio Access Bear) release procedure and immediately release the E-RAB locally;

If the eNB receives a GTP error indication from the correspondent eNB through the X2 interface, the eNB will ignore this error indication.

The S-GW uses the following processing methods for GTP-U exceptions:

When the S-GW receives a GTP error indication from a eNB that involves a bearer context of a certain UE, the SGW will not delete the bearer context involved, but delete all the eNBs involved in the UE. TEID (Tunnel End Point Identifier) of the GTP tunnel. The S-GW starts to buffer the downlink data related to the UE, and sends a Downlink Data Notification message to the MME, and the MME triggers a subsequent re-establishment process of the involved bearer.

According to 3GPP TS 29.281, the format of the information item carried in the GTP-U error indication message in the prior art is as shown in Table 1 below. The header of the GTP-U PDU is summarized as shown in Table 2.

Table 1 Information items carried in the GTP-U Error Indication message

Table 2 Summary of GTP-U Header

5 TEID (1st Octet)

6 TEID (2nd Octet)

7 TEID (3rd Octet)

8 TEID(4th Octet)

9 Sequence Number Sequence Number (1st Octet) 1) 4)

10 Sequence Number Sequence Number (2nd Octet) 1) 4)

11 N-PDU Number2) 4)

12 Next Extension Header Type 3) 4) After the relay node RN is introduced into the system, the DeNB divides the user plane S 1 -U tunnel of the RN to the SGW and the X2-U tunnel of the RN to the neighboring eNB into two tunnels.

However, the prior art does not consider the processing method after the DeNB is used as a proxy node once the GTP error indication is found. The GTP-U tunnel transmits the PDU including both the user PDU and some control PDUs. For the control PDU, the GTP-U The Header of the PDU is all zeros, and the GTP-U error indication message belongs to the Control PDU. Since the DeNB of the prior art only performs forwarding processing according to the header of the PDU, the control PDU of the GTP-U is not forwarded. Therefore, the DeNB cannot judge based on the header information of the GTP-U, and how is the message " The next hop "for forwarding. Once the DeNB ignores the GTP error indication, it will cause the system to work abnormally. On the other hand, for the GTP error indication on the X2 interface, in the prior art, the receiving end will ignore the error indication, but in the Relay scenario, the Un port occupies the air interface resource for data forwarding, but the above data Will be deleted on the target side, which will cause waste of Un port transmission resources.

A similar problem exists in the scenario where the network deploys the home base station HeNB. As shown in FIG. 4, in the scenario where the network deploys the home base station HeNB, the home base station gateway HeNB Gateway serves as the S1-U proxy node of the HeNB, and the HeNB acts as the HeNB. The proxy node of S1-U. In the prior art, the processing method after the GTP error indication is found when the HeNB Gateway is used as the proxy node is not considered. SUMMARY OF THE INVENTION The present invention provides a GTP-U tunnel error processing method and apparatus, which solves the problem that an abnormality processing mechanism is not processed after a GTP-U error occurs after a proxy node is introduced in an existing system architecture, thereby ensuring stable operation of the system. .

The present invention provides a user plane general packet radio service tunneling protocol GTP-U tunnel error processing method, including: a proxy node receives a GTP-U error indication sent by a proxy node or a core network node, wherein the proxy node is respectively proxyed A GTP-U tunnel S1-U corresponding to the same bearer is established between the node and the core network node;

The proxy node indicates the GTP-U error according to the type of the control plane interface between the proxy node and the proxy node. Row processing, where different control plane interface types manage different types of GTP-U tunnels.

The invention also provides a user plane general packet radio service tunneling protocol GTP-U tunnel error processing method, which comprises:

Receiving, by the proxy node, a GTP-U error indication sent by the proxy node, wherein the proxy node respectively establishes a GTP-U tunnel S1-U corresponding to the same bearer between the proxy node and the core network node;

The proxy node processes the GTP-U error indication according to the type of the control plane interface between the proxy node and the proxy node, wherein different control plane interface types manage different types of GTP-U tunnels.

The invention also provides a proxy device, comprising:

The error indication receiving unit is configured to receive a GTP-U error indication sent by the proxy node or the core network node, where the proxy device establishes a GTP-U tunnel S1- corresponding to the same bearer between the proxy node and the core network node. The error processing unit is configured to process the GTP-U error indication according to the control plane interface type between the proxy device and the proxy node, where different control plane interface types manage different types of GTP-U tunnels.

The invention also provides an agent device, comprising:

An error information receiving unit, configured to receive a GTP-U error indication sent by the proxy node, wherein the proxy node establishes a GTP-U tunnel S1-U corresponding to the same bearer between the proxy device and the core network node;

The user plane error processing unit is configured to process the GTP-U error indication according to the control plane interface type between the proxy device and the proxy node, where different control plane interface types manage different types of GTP-U tunnels.

The GTP-U error processing method and device provided by the invention have the following beneficial effects: the problem that the exception handling mechanism is not processed after the GTP-U error occurs after the introduction of the proxy node in the existing system architecture is solved, thereby ensuring that the system obtains Stable operation. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram of an E-UTRAN network architecture including an RN;

2 is a schematic diagram of an S1-U user plane protocol stack in a relay deployment scenario;

Figure 3 is a schematic diagram of an X2-U user plane protocol stack in a relay deployment scenario;

4 is a system architecture diagram of a home base station HeNB deployment scenario;

FIG. 5 is a schematic diagram of a GTP-U tunnel error processing method of a proxy node according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a GTP-U tunnel error processing method of a proxy node according to an embodiment of the present invention;

FIG. 7 is a flowchart of a processing method 1 after a DeNB receives a GTP-U error indication from a relay through an UN interface according to an embodiment of the present invention;

FIG. 8 is a flowchart of a processing method 2 after a DeNB receives a GTP-U error indication from a relay through an UN interface according to an embodiment of the present invention; FIG. 9 is a flowchart of a processing method after a DeNB receives a GTP-U error indication from an S-GW through an S1 interface according to an embodiment of the present invention;

10 is a flow chart of a processing method after the Relay receives a GTP-U error indication from a DeNB according to an embodiment of the present invention;

11 is a structural diagram of a proxy device according to an embodiment of the present invention;

FIG. 12 is a structural diagram of a proxy device according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION The GTP-U error processing method and apparatus provided by the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

The embodiment of the present invention mainly solves the problem that the processing of the user plane GTP-U tunnel occurs after the proxy node, such as the donor base station, enters the existing system architecture, and as shown in FIG. 5, the GTP-U error provided by the embodiment of the present invention is provided. The processing method includes: Step S501: The proxy node receives a GTP-U error indication sent by the proxy node or the core network node, where the proxy node establishes a GTP-U tunnel corresponding to the same bearer with the proxy node and the core network node respectively. S 1-U; wherein the proxy node is an access network node serving a user terminal in the network, and the proxy node is a node in the network for implementing data forwarding by the proxy node and the core network node.

That is, S 1-U between the proxy node and the proxy node, and S 1-U between the proxy node and the core network node form part of the system bearer.

Step S502: The proxy node processes the GTP-U error indication according to the control plane interface type between the proxy node and the proxy node, where different control plane interface types manage different types of GTP-U tunnels.

The proxy node is a node that provides services to the UE, and the proxy node is a special node. The interface type of the control plane with the proxy node may include one or more. Therefore, in the embodiment of the present invention, the proxy node determines the proxy node. The specific interface type, how to make GTP-U tunnel error handling, and whether the interface plane control type is multiple, determines whether the proxy node needs to correctly indicate the GTP-U error indication sent from the core network node to the proxy node. And whether it is necessary to distinguish which type of GTP-U tunnel or the like is received from the GTP-U error indication received by the proxy node. Therefore, the embodiment of the present invention solves the problem that the GTP-U error does not occur after the proxy node is introduced in the existing system architecture. The processing mechanism handles the problem, thus ensuring the stable operation of the system.

For the specific control mode of the GTP-U error indication for the proxy node to determine the type of the control plane interface with the proxy node, the processing manner provided by the following embodiments of the present invention is preferably used.

1) How to handle the GTP-U error indication from the proxy node for the proxy node

The control plane interface type includes both an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, where X2-U is a correspondence between the proxy node and the node being noded and the access network node respectively. GTP-U tunnel of the same bearer, That is, the proxy node connects the core network node and the access network node at the same time. In this application scenario, the proxy node processes the GTP-U error indication, including:

If the GTP-U error indication is received from the proxy node, the tunnel identification information in the GTP-U error indication is obtained, and according to the existing mechanism, when the proxy node sends a GTP-U error indication to the proxy node, the proxy is generated. The tunnel identification information of the GTP-U tunnel that is sent by the node to the proxy node is carried in the GTP-U error indication. Specifically, the tunnel identifier information includes the tunnel endpoint identifier TEID and the transport layer address.

The abnormality of the GTP-U tunnel type is determined according to the tunnel identification information of the X2-U managed by the X2-C interface and the tunnel identification information of the S1-U managed by the S1-C interface, that is, the abnormality is determined. Whether the GTP-U tunnel involves S1-U or X2-U or both, and the GTP-U managed by each interface type can be obtained through access messages obtained from these interfaces;

According to the determined GTP-U tunnel type, the GTP-U tunnel error handling is performed. Different GTP-U tunnel types determine different processing modes. The GTP-U error indication carries the proxy node to be assigned to the proxy node. Tunnel identification information, if X2-U and S1-U are related to the same bearer, the proxy node will assign the same tunnel identification information to the proxy node for X2-U and S1-U, thus determining the abnormal GTP-U When the tunnel may only contain S 1 -U, or may include both S1-U and X2-U, in this scenario, the specific processing method is preferably used in any of the following manners.

Determining a bearer corresponding to the tunnel identification information in the GTP-U error indication; determining tunnel identification information of the S 1 -U corresponding to the bearer allocated to the core network node; and transmitting a GTP-U error indication to the core network node The determined GTP-U error indication carries the determined tunnel identification information.

There is a one-to-one correspondence between the tunnel identification information and the bearer, and the proxy node assigns the tunnel identification information allocated by the proxy node to the GTP-U tunnel corresponding to the bearer, and the core network node corresponds to the proxy node for the bearer. The tunnel identification information allocated by the GTP-U tunnel is different. Therefore, the proxy node carries the tunnel identification information allocated by the core network node to the proxy node for the bearer in the GTP-U error indication sent.

2: determining a bearer corresponding to the tunnel identifier information in the GTP-U error indication; respectively, initiating a deactivation procedure for the determined bearer to the proxy node and the core network node.

The proxy node triggers the deactivation process initiated by the proxy node and the core network node, and can be implemented by referring to the existing deactivation process, which will not be described in detail herein.

When it is determined that the GTP-U tunnel having an abnormality only includes X2-U, the present embodiment preferably uses the following processing manner: marking the X2-U in which the abnormality occurs, and then receiving the tunneling direction through the X2-U in which the abnormality occurs. When the data forwarded by the network node is accessed, the data is directly discarded. Specifically, the bearer corresponding to the tunnel identifier information in the GTP-U error indication may be determined, and the tunnel identifier information assigned by the access network node to the proxy node for the X2-U tunnel corresponding to the bearer is marked.

When the control plane interface type only includes the S1-C interface that manages S1-U, the GTP-U error indication is processed, and preferably one of the following processing methods is used: 1 If the GTP-U error indication is received from the proxy node, the proxy node forwards the GTP-U error indication to the core network node. It should be noted that since there is only one interface type, the proxy node does not need to perform which The judgment of the interface type error directly sends a GTP-U error indication to the core network node, and the GTP-U error indication carries the tunnel identification information allocated by the core network node to the proxy node for the erroneous S1-U tunnel.

2, the proxy node obtains the tunnel identifier information in the GTP-U error indication, and determines the bearer corresponding to the acquired tunnel identifier information; the proxy node respectively initiates a deactivation process for the determined bearer to the proxy node and the core network node, specifically The activation process can be implemented with reference to the existing deactivation process, which will not be described in detail here.

The control plane interface type only includes the error handling mode of the S1-C interface that manages the S1-U, and is preferably applied to the following scenario: The proxy node is the home evolved base station gateway HeNB GW, and the proxy node and the access network node are different families. The base station HeNB, the core network node is a serving gateway. The control plane interface type includes the error handling modes of the above two types of interfaces, and is preferably applied to the following scenario: the proxy node is the donor evolved base station De B, the access network node is the evolved base station e B, and the proxy node is the relay Node RN, the core network node is a serving gateway.

2) For the way the proxy node receives the GTP-U error indication from the core network node

The control plane interface type includes both an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, where X2-U is a corresponding bearer established between the proxy node and the node being accessed and the access network node respectively. The GTP-U tunnel, that is, the proxy node is connected to the core network node and the access network node at the same time, and the proxy node processes the GTP-U error indication, and preferably uses any of the following processing methods:

If the GTP-U error indication is received from the core network node, the tunnel identifier information in the GTP-U error indication is obtained, where the tunnel identifier information is a tunnel identifier corresponding to the tunnel that is abnormally assigned by the proxy node to the core network node. Information, the proxy node determines the bearer corresponding to the acquired tunnel identification information; determines the tunnel identification information of the S1-U corresponding to the bearer allocated by the proxy node to the proxy node; sends a GTP-U error indication to the proxy node, and sends the The determined GTP-U error indication carries the determined tunnel identification information, so that the proxy node obtains a GTP-U tunnel with a specific abnormality.

If the GTP-U error indication is received from the core network node, the tunnel identification information in the GTP-U error indication is obtained, where the tunnel identification information is a tunnel identifier corresponding to the abnormally assigned tunnel allocated by the proxy node to the core network node. The information, the proxy node determines the bearer corresponding to the acquired tunnel identifier information, and initiates a deactivation process for the determined bearer to the proxy node and the core network node, respectively.

The specific deactivation process can be implemented with reference to the existing deactivation process, which will not be described in detail herein.

When the control plane interface type only includes the S1-C interface that manages S1-U, the GTP-U error indication is processed. It is preferred to use either of the following methods:

1 If a GTP-U error indication is received from the core network node, the proxy node forwards the GTP-U error indication to the proxy node. It should be noted that since there is only one interface type, the proxy node does not need to make any interface type error judgment, and directly sends a GTP-U error indication to the proxy node. 2, the proxy node obtains the tunnel identifier information in the GTP-U error indication, and determines the bearer corresponding to the acquired tunnel identifier information; the proxy node respectively initiates a deactivation process for the determined bearer to the proxy node and the core network node, specifically The activation process can be implemented with reference to the existing deactivation process, which will not be described in detail here.

The control plane interface type only includes the error handling mode of the S1-C interface that manages the S1-U, and is preferably applied to the following scenario: The proxy node is the home evolved base station gateway He B GW, and the proxy node and the access network node are different. The home base station He B, the core network node is a serving gateway. The control plane interface type includes the error handling modes of the above two types of interfaces, and is preferably applied to the following scenario: the proxy node is the donor evolved base station De B, the access network node is the evolved base station e B, and the proxy node is the relay Node RN, the core network node is a serving gateway.

3) The proxy node receives the GTP-U error indication from the access network node.

When the proxy node is connected to the proxy node and is also connected to the access network node and the core network node, the control plane interface type includes the S1-C interface for managing S1-U and the X2-C interface for managing X2-U. X2-U is a GTP-U tunnel corresponding to the same bearer established between the proxy node and the proxy node and the access network node. In this embodiment, the proxy node receives the GTP-U error indication processing manner from the access network node. , preferably used in any of the following ways:

1 When the proxy node receives the GTP-U error indication sent by the access network node, it determines that the X2-C managed by the X2-U interface is abnormal; and determines that the user terminal UE that uses the abnormal X2-C is provided by the proxy node. At the time of service, the proxy node marks the abnormal X2-U, specifically, the X2-U tunnel identification information assigned by the proxy node to the proxy node; and then receives the X2-U direction through which the abnormality needs to be received. When the data is forwarded by the proxy node, the data is directly discarded.

2 When the proxy node receives the GTP-U error indication sent by the access network node, it determines that the X2-C managed by the X2-U interface is abnormal; and determines that the UE that uses the abnormal X2-C is served by the proxy node. Sending a GTP-U error indication to the proxy node, and the sent GTP-U error indication carries the tunnel identification information allocated by the proxy node to the proxy node for the abnormal X2-C.

The type of interface between the proxy node and the access network node only exists in X2-C, so no GTP-U error is required when receiving the GTP-U error indication.

The proxy node receives the GTP-U error indication from the access network node, and is preferably applied to the scenario that the proxy node is the donor evolved base station DeNB, the access network node is the evolved base station eNB, and the proxy node is the relay node RN. The core network node is a serving gateway.

The embodiment of the present invention further provides a GTP-U tunnel error processing method for the user plane general packet radio service tunneling protocol, as shown in FIG. 6, which includes:

Step S601, the proxy node receives the GTP-U error indication sent by the proxy node, where the proxy node establishes a GTP-U tunnel S1-U corresponding to the same bearer between the proxy node and the core network node;

Step S602, the proxy node according to the control plane interface type between the proxy node and the proxy node,

The GTP-U error indication is processed, where different control plane interface types manage different types of GTP-U tunnels. The proxy node is a special node, and the proxy node may only have an S1-C interface, and the S1-C interface and the X2-U interface may exist at the same time. In the embodiment of the present invention, by determining which interface types exist, it is determined according to whether It is necessary to distinguish which interface type is wrong, or whether the interface type error is judged, etc., thus solving the problem that after the introduction of the proxy node in the existing system architecture, there is no abnormal processing mechanism after the GTP-U error occurs, thereby ensuring the stability of the system. run.

Preferably, the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, where X2-U is established between the proxy node and the proxy node and the access network node respectively. Corresponding to the GTP-U tunnel of the same bearer, that is, the proxy node is connected to the access network node and the core network node at the same time, and the proxy node processes the GTP-U error indication, including: acquiring the tunnel identifier in the GTP-U error indication The information, that is, the tunnel identification information corresponding to the currently abnormal GTP-U tunnel allocated by the proxy node to the proxy node; the X2-U tunnel identification information managed by the predetermined X2-C interface, and the S1-C interface The managed S1-U tunnel identification information identifies the GTP-U tunnel type in which the abnormality occurs. The GTP-U tunnel error handling is performed according to the determined GTP-U tunnel type in which the abnormality occurs.

Preferably, the proxy node performs GTP-U tunnel error processing according to the determined type of GTP-U tunnel in which the abnormality occurs, and preferably uses any one or any of the following methods:

1 When the abnormal GTP-U tunnel is S1-U, the bearer corresponding to the acquired tunnel identifier information is determined; and the deactivation process for the determined bearer is initiated.

2 When the abnormal GTP-U tunnel is X2-U, the X2-U with the abnormality is marked; after receiving the data to be sent to the proxy node through the X2-U with the abnormality, the data is directly discarded. .

Preferably, the tunnel identification information includes a tunnel endpoint identifier TEID and a transport layer address.

When the control plane interface type only includes the S1-C interface for managing the S1-U, the processing method of the GTP-U error indication by the proxy node can refer to the error processing mode of the existing evolved base station, and will not be described in detail herein.

The method provided by the embodiment of the present invention can be applied to an scenario of an evolved base station scenario or a home base station, and the error handling manner when the control plane interface type includes the S1-C interface for managing the S1-U and the X2-C interface for managing the X2-U. Preferably, the method is applied to the following scenario: the proxy node is a donor evolved base station De B, the access network node is an evolved base station e B, the proxy node is a relay node RN, and the core network node is a serving gateway S-GW .

The GTP-U tunnel error processing method provided by the embodiment of the present invention is applied to the following scenario as an example to give a preferred embodiment of the present invention: the proxy node is a donor evolved base station DeNB, and the access network node is an evolved base station eNB, The proxy node is a relay node RN, and the core network node is a serving gateway. The processing method is different according to the difference of the node type of the GTP-U error and the type of the interface of the control plane. The processing method of the GTP-U error is found by the relay node Relay and the processing method after the DeNB finds the error.

Embodiments 1 to 6 are used to solve the processing method for the DeNB to discover the GTP-U error indication. Specifically, in Embodiments 1 and 2, a processing method for receiving a GTP-U error indication from the Relay by the DeNB through the Un interface is solved. Embodiment 3 and 4 resolve the DeNB. A processing method for receiving a GTP-U error indication from the S-GW through the SI interface; Embodiments 5 and 6 address a processing method for the DeNB to receive a GTP-U error indication from an adjacent eNB or DeNB through the X2 interface.

Example 1

After the DeNB receives the GTP-U error indication GTP-U error indication from the Relay through the Un interface, the control plane interface type includes the S1-C interface for managing S1-U and the X2-C interface for managing X2-U. As shown in Figure 7, the following steps are included:

Step S701: The DeNB sets the Relay as its GTP according to the control plane interface type (for example, an S1 access (S1AP) message transmitted from the S1-C interface or an X2 access (X2AP) message transmitted from the X2-C interface). The tunnel endpoint identifier "Tunnel Endpoint Identifier Data" and the transport layer address "GTP-U Peer Address" assigned by the -U tunnel are associated with Sl-U or X2-U.

The S1AP message carries the TEID and the transport layer address assigned by the relay to the S1-U tunnel of the DeNB. The X2AP message carries the TEID and transport layer address assigned by the relay to the X2-U tunnel of the DeNB. It should be noted that Relay may assign the same GTP-U TEID and transport layer address to S1-U and X2-U related to the same E-RAB. In this case, S1-U and X2-U may be involved at the same time.

Step S702: The DeNB receives the GTP-U error indication and first determines the GTP-U error indication type. Possible error types include GTP-U error indication on S1-U, GTP-U error Indication on X2-U, and S1 at the same time. -U and X2-U GTP-U error Indication After receiving the Error indication message, the DeNB according to the "Tunnel Endpoint Identifier Data" and "GTP-U Peer Address" information items in the error indication and the "Tunnel Endpoint Identifier Data" saved before the Relay "and" GTP-U Peer Address" is associated with the control plane interface (received from the Sl-C interface S1AP message or received from the X2-C interface X2-AP message), and the error type of the GTP error indication is determined to belong to S1-U. The GTP-U error on the GTP-U error on X2-U or both S1-U and X2-U. If it is a GTP-U error indication involving the Sl-U or both Sl-U and X2-U, step S703 is performed, and if it is a GTP-U error indication involving only X2-U, step S705 is performed.

Step S703, if the DeNB determines that it is a GTP-U error indication involving S1-U or both S1-U and X2-U, obtain the TEID and the transport layer address in the GTP-U error indication, and according to The saved UE context obtains the E-RAB information related to the tunnel corresponding to the TEID, and then obtains the TEID information and the transport layer address information allocated by the SGW at the S1 interface according to the E-RAB information.

Step S704, the DeNB constructs GTP-U error indication information according to the TEID information and the transport layer address information allocated by the SGW on the S1 interface obtained in step S703, and sends the information to the SGW through the S1 interface;

Step S705: If the DeNB determines that the GTP-U error indication is only related to the X2-U, the GTP-U tunnel is marked, and the DeNB performs direct packet loss processing for the forwarding data related to the GTP-U tunnel.

Example 2 After De B receives the GTP-U error indication from the relay through the UN interface, the control plane interface type includes the S1-C interface for managing S1-U and the X2-C interface for managing X2-U, as shown in Figure 8. The main difference from the method 1 is that the processing method when the S 1-U error is involved mainly includes the following steps:

Step S801: According to the control plane interface type (for example, received from the S1-C interface S1AP message or received from the X2-C interface X2AP), the DeNB allocates the "Tunnel Endpoint Identifier Data" and the "GTP" that the Relay allocates to its GTP-U tunnel. -U Peer Address" is associated with Sl-U or X2-U. (Note: Relay may assign the same GTP-U TEID and transport layer address to S1-U and X2-U involving the same E-RAB. In this case, S1-U and X2-U may be involved at the same time)

Step S802, the DeNB receives the GTP-U error indication and first determines the GTP-U error indication type. Possible error types include GTP-U error indication on S1-U, GTP-U error Indication on X2-U, and S1 at the same time. -U and X2-U GTP-U error Indication After receiving the Error indication message, the DeNB according to the "Tunnel Endpoint Identifier Data" and "GTP-U Peer Address" information items in the error indication and the "Tunnel Endpoint Identifier Data" saved before the Relay "and" GTP-U Peer Address" is associated with the control plane interface (received from the S1-C interface S1AP message or received from the X2-C interface X2-AP), and the error type of the GTP error indication is determined to belong to the S1 interface. The GTP-U error is also a GTP-U error on the X2 interface or both S1-U and X2-U. If the GTP-U error indication of the S1-U is involved or the S1-U and X2-U are involved, step S803 is performed, if only the GTP-U error indication of the X2 interface is involved, step S805 is performed; Step S803, if the DeNB determines Is the GTP-U error indication involving S 1 -U or both S 1 -U and X2-U, then the DeNB obtains the error tunnel according to the tunnel identification information in the GTP-U error indication and according to the saved UE context. E-RAB information.

Step S804, the E-RAB information obtained in step S803, the DeNB acts as a proxy of the MME to trigger the deactivation process of the E-RAB related to the GTP-U tunnel to the relay device, and the E-RAB release procedure may refer to 3GPP TS 36.413 8.2. A description of the MME-triggered E-RAB release procedure in .3.2.1.

Step S805, according to the E-RAB identification information obtained in step S803, the DeNB acts as a proxy of the Relay to trigger the deactivation process of the E-RAB related to the GTP-U tunnel to the MME device, and the E-RAB release procedure may refer to 3GPP TS 36.413. 8.2.3.2.2, Description of the e-RAB release procedure triggered by e B.

The execution of step S804 and step S805 is not limited in sequence.

Step S806: If the DeNB determines that the GTP-U error indication involving only the X2 interface marks the GTP-U tunnel, the DeNB performs direct packet loss processing for the forwarding data related to the GTP-U tunnel.

Example 3

After the DeNB receives the GTP-U error indication from the S-GW through the S1 interface, the method includes the following steps:

Step 1, the DeNB according to the tunnel identification information in the GTP-U error indication and according to the saved UE context, Obtaining the E-RAB information involved in the error tunnel, and then obtaining the TEID information and the transport layer address information allocated by the E-RAB on the Un interface by the Relay for the S1-U according to the E-RAB information.

Step 2: De B constructs the GTP-U error indication information and sends it to the relay through the Un interface S1-U according to the TEID information and the transport layer address information of the relay on the Un interface obtained in step 1.

Example 4

The processing method 2 after the DeNB receives the GTP-U error indication from the S-GW through the S1 interface, as shown in FIG. 9, mainly includes the following steps:

Step S901: The DeNB obtains the E-RAB information related to the tunnel according to the tunnel identification information in the GTP-U error indication and according to the saved UE context.

Step S902, the E-RAB identification information obtained in step S901, and the DeNB acting as a proxy triggering of the MME

For the deactivation process of the E-RAB involved in this GTP-U tunnel, the E-RAB release procedure can refer to the description of the MME-triggered E-RAB release procedure in 3GPP TS 36.413 8.2.3.2.1.

Step S903, according to the E-RAB identification information obtained in step S901, the DeNB acts as a proxy of the Relay to trigger the deactivation process of the E-RAB related to the GTP-U tunnel to the MME device, and the E-RAB release procedure may refer to 3GPP TS 36.413. 8.2.3.2.2, Description of the e-RAB release procedure triggered by e B.

Example 5

After the DeNB receives the GTP-U error indication from the peer eNB through the X2-C interface, the processing method 1 includes the following steps:

Step 1: If an error indication is received from the X2-C interface, it is determined that the X2-U is in error, and the DeNB determines, according to the information of the UE that is saved by itself, whether the UE using the erroneous tunnel is served by the cell controlled by the relay device.

Step 2: If the UE involved is directly served by the cell controlled by the relay, the DeNB marks the GTP-U tunnel, and the DeNB performs direct packet loss processing for the forwarding data related to the GTP-U tunnel.

Example 6

Step 1: If an error indication is received from the X2-C interface, it is determined that the X2-U is in error, and the DeNB determines whether the UE using the GTP-U tunnel is served by the cell controlled by the relay device according to the information of the UE stored in the UE.

Step 2: If the UE involved is served by a cell controlled by the relay device, the DeNB sends a GTP-U error indication message to the Relay through the Un port. The GTP-U error indication includes the transport layer address information and TEID information allocated by the DeNB for the E2-RAB's X2-U on the Un port.

Example 7

This embodiment is used to solve the problem that the relay receives the GTP-U error indication from the DeNB on the Un interface, where the control plane interface type includes the S1-C interface for managing the S1-U and the X2-C interface for managing the X2-U. . Figure 10 As shown, it mainly includes the following steps:

Step S101: According to the control plane interface type (for example, received from the S1-C interface S1AP message or received from the X2-C interface X2AP), the Relay allocates the "Tunnel Endpoint Identifier Data" and the "GTP" allocated by the DeNB to its GTP-U tunnel. -U Peer Address" is associated with the Sl-U or X2-U interface.

Step S102: The Relay receives the GTP-U error indication to first determine the GTP-U error indication type, and the possible error types include the GTP-U error indication on the S1-U and the GTP-U error Indication on the X2-U. After the Error indication message, the "Tunnel Endpoint Identifier Data" and "GTP-U Peer Address" information items in the error indication and the "Tunnel Endpoint Identifier Data" and "GTP-U Peer Address" and control planes saved before the Relay are used. The association of the interface (received from the S 1 -C interface S 1 AP message or received from the X2-C interface X2-AP) determines whether the error type of the GTP error indication belongs to the GTP-U error on the S1-U or the X2-U GTP-U error. If it is a GTP-U error indication involving S1-U, step S103 is performed, if it is a GTP-U error indication involving X2-U, step S104 is performed;

Step S103: If the Relay determines that the GTP-U error indication is related to the S1-U, the Relay triggers the deactivation process of the E-RAB involved in the GTP-U tunnel. The E-RAB release procedure may refer to 3GPP TS 36.413 8.2. A description of the e-RAB release procedure triggered by e B in .3.2.2.

Step S104: If the Relay determines that the GTP-U error indication related to the X2-U, the Relay stops transmitting data on the GTP-U tunnel.

The problem solved by the embodiment of the present invention is introduced in the shield for the DeNB as a user plane proxy node of the Relay device and the core network (EPC). Therefore, the solution of the present invention is also applicable to the HeNB deployment scenario, but only the function execution entity may Become a proxy node (such as HeNB) and a proxy node (such as HeNB gateway).

Based on the same inventive concept, an agent device and a proxy device are also provided in the embodiment of the present invention. Since the principle of solving the problem of these devices is similar to a GTP-U tunnel error handling method, the implementation of these devices can be referred to the method. Implementation, repetition will not be repeated.

An embodiment of the present invention provides a proxy device, as shown in FIG. 11, including:

The error indication receiving unit 10 is configured to receive a GTP-U error indication sent by the proxy node or the core network node, where the proxy device establishes a GTP-U tunnel S1 corresponding to the same bearer between the proxy node and the core network node respectively. -U;

The error processing unit 20 is configured to: according to a control plane interface type between the proxy device and the proxy node,

The GTP-U error indication is processed, where different control plane interface types manage different types of GTP-U tunnels.

Preferably, the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, wherein X2-U is established between the proxy device and the proxy node and the access network node respectively. Corresponding to the same bearer

GTP-U tunnel, error handling unit 20, specifically for:

If the GTP-U error indication is received from the proxy node, the tunnel label in the GTP-U error indication is obtained. Knowledge

Determining the abnormal GTP-U tunnel type according to the tunnel identification information of the X2-U managed by the X2-C interface and the tunnel identification information of the S1-U managed by the S1-C interface;

GTP-U tunnel error handling based on the determined GTP-U tunnel type with anomalies

Preferably, the error processing unit 20 determines that the abnormality of the GTP-U tunnel includes only S1-U, or both S1-U and X2-U, and performs GTP-U tunnel error processing, including:

Determining a bearer corresponding to the tunnel identifier information in the GTP-U error indication;

Determining, by the core network node, the tunnel identifier information of the S 1 -U corresponding to the bearer allocated to the proxy device; sending a GTP-U error indication to the core network node, where the sent GTP-U error indication carries the determining Tunnel identification information.

A deactivation process for the determined bearer is initiated to the proxy node and the core network node, respectively.

Preferably, the error processing unit 20 determines that the GTP-U tunnel error processing is performed when the GTP-U tunnel that has an abnormality only includes the X2-U tunnel, and specifically includes:

The X2-U in which the abnormality is marked is marked, and when the data forwarded to the access network node by the X2-U tunnel in which the abnormality occurs is received, the data is directly discarded.

Preferably, the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, wherein X2-U is established between the proxy device and the proxy node and the access network node respectively. Corresponding to the GTP-U tunnel of the same bearer, the error processing unit 20 is specifically configured to:

If the GTP-U error indication is received from the core network node, the tunnel identification information in the GTP-U error indication is obtained, and the bearer corresponding to the acquired tunnel identification information is determined;

Determining tunnel identification information of the S1-U corresponding to the bearer allocated by the proxy node to the core network node; transmitting a GTP-U error indication to the core network node, where the sent GTP-U error indication carries the determination Tunnel identification information.

Preferably, the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U. The port, where X2-U is a GTP-U tunnel corresponding to the same bearer established between the proxy device and the access node and the access network node, and the error processing unit 20 is further configured to:

When receiving the GTP-U error indication sent by the access network node, determining that the X2-C managed by the X2-U interface is abnormal; determining that the user terminal UE using the abnormal X2-C is served by the proxy node, Mark the X2-U with an abnormality;

When the data that needs to be forwarded by the X2-U that has an abnormality to the proxy node is received, the data is directly discarded.

Preferably, the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, wherein X2-U is established between the proxy device and the proxy node and the access network node respectively. Corresponding to the GTP-U tunnel of the same bearer, the error processing unit 20 is further configured to:

When receiving the GTP-U error indication sent by the access network node, determining that the X2-C managed by the X2-U interface is abnormal; determining that the user terminal UE using the abnormal X2-C is served by the proxy node, A GTP-U error indication is sent to the proxy node, and the transmitted GTP-U error indication carries the tunnel identification information of the X2-C that is abnormally assigned by the proxy node to the proxy device.

Preferably, when the control plane interface type only includes the S1-C interface for managing S1-U, the error processing unit 20 is specifically configured to:

If the GTP-U error indication is received from the proxy node, forwarding the GTP-U error indication to the core network node;

If a GTP-U error indication is received from the core network node, the GTP-U error indication is forwarded to the proxy node.

Obtaining the tunnel identifier information in the GTP-U error indication, determining the bearer corresponding to the acquired tunnel identifier information, and initiating a deactivation process for the determined bearer to the proxy node and the core network node, respectively.

Preferably, the proxy device is a donor evolved base station De B, the access network node is an evolved base station e B, the proxy node is a relay node RN, and the core network node is a serving gateway; The proxy device is a home evolved base station gateway He B GW, and the proxy node and the access network node are different home base stations He B , and the core network node is a serving gateway.

The embodiment of the present invention further provides a proxy device, as shown in FIG. 12, including: an error information receiving unit 30, configured to receive a GTP-U error indication sent by the proxy node, where the proxy node and the proxy device respectively A GTP-U tunnel S1-U corresponding to the same bearer is established between the core network nodes; a user plane error processing unit 40 is configured to perform GTP-U error indication according to the type of the control plane interface between the proxy device and the proxy node. Processing, where different control plane interface types manage different types of GTP-U tunnels. Preferably, the control plane interface type includes an S 1-C interface for managing S 1-U and an X2-C interface for managing X2-U, where X2-U is a proxy node between the proxy device and the access network node respectively. The GTP-U tunnel corresponding to the same bearer, the user plane error processing unit 40 is specifically configured to:

Obtaining tunnel identification information in the GTP-U error indication;

According to the X2-U tunnel identification information managed by the predetermined X2-C interface, and the S 1-C interface management

The tunnel identification information of S 1 -U determines the type of GTP-U tunnel in which an abnormality occurs;

The GTP-U tunnel error handling is performed according to the determined type of GTP-U tunnel in which the abnormality occurs.

Preferably, the user plane error processing unit 40 is specifically configured to: when the GTP-U tunnel in which the abnormality occurs is S 1-U, determine the bearer corresponding to the acquired tunnel identifier information; initiate a deactivation process for the determined bearer.

Preferably, the user plane error processing unit 40 is specifically configured to mark the X2-U where the abnormality occurs when the abnormal GTP-U tunnel is X2-U; and then receive the X2-U that needs to pass the abnormality. When the data is sent to the proxy node, the data is directly discarded.

Preferably, the proxy device is a relay node RN, the proxy node is a donor evolved base station De B , the access network node is an evolved base station e B , and the core network node is a serving gateway; or the The proxy device and the access network node are different home base stations He B , the proxy node is a home evolved base station gateway He B GW, and the core network node is a serving gateway.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that the computer Or performing a series of operational steps on other programmable devices to produce computer-implemented processing such that instructions executed on a computer or other programmable device are provided for implementing a block in a flow or a flow and/or block diagram of the flowchart Or the steps of the function specified in multiple boxes.

Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the inventions

Claims

Rights request

A user plane general packet radio service tunneling protocol GTP-U tunnel error processing method, which is characterized in that:

The proxy node receives the GTP-U error indication sent by the proxy node or the core network node, wherein the proxy node establishes a GTP-U tunnel S 1-U corresponding to the same bearer between the proxy node and the core network node;

2. The method according to claim 1, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-U When the proxy node and the GTP-U tunnel corresponding to the same bearer are established between the proxy node and the access network node, the proxy node processes the GTP-U error indication, including:

Obtaining tunnel identification information in the GTP-U error indication when receiving a GTP-U error indication from the proxy node;

The proxy node determines the abnormal GTP-U tunnel type according to the tunnel identification information of the X2-U managed by the X2-C interface and the tunnel identification information of the S1-U managed by the S1-C interface.

The method according to claim 2, wherein the GTP-U tunnel error handling is performed when it is determined that the abnormal GTP-U tunnel contains only S 1-U or both S 1 -U and X2-U , including:

Determining, by the core network node, the tunnel identity information of the S1-U corresponding to the bearer allocated to the proxy node; sending a GTP-U error indication to the core network node, where the sent GTP-U error indication carries the determining Tunnel identification information.

The method of claim 2, wherein when the GTP-U tunnel that is abnormal is only included in the X2-U, the GTP-U tunnel error processing is performed, including:

6. The method according to claim 1, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-U For the proxy node and the proxy node and access When a GTP-U tunnel corresponding to the same bearer is established between the network nodes, the proxy node processes the GTP-U error indication, including:

Obtaining the tunnel identifier information in the GTP-U error indication, and determining the bearer corresponding to the acquired tunnel identifier information, when receiving the GTP-U error indication from the core network node;

Determining tunnel identification information of the S1-U corresponding to the bearer allocated by the proxy node to the proxy node; transmitting a GTP-U error indication to the core network node, where the sent GTP-U error indication carries the determination Tunnel identification information.

7. The method according to claim 1, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-U is a proxy. When the node and the GTP-U tunnel corresponding to the same bearer are established between the node and the access network node, the proxy node processes the GTP-U error indication, including:

8. The method according to claim 1, wherein the control plane interface type includes management S1-U at the same time

The S1-C interface and the X2-C interface of the X2-U are managed, and the method is further performed when the X2-U is a GTP-U tunnel corresponding to the same bearer established between the proxy node and the access node and the access network node. Includes:

When the proxy node receives the GTP-U error indication sent by the access network node, it determines that the X2-C managed by the X2-U interface is abnormal.

Determining that the user terminal UE using the abnormal X2-C is served by the proxy node, the proxy node marks the X2-U in which the abnormality occurs;

After receiving the data that needs to be forwarded to the proxy node by the X2-U in which the abnormality occurs, the data is directly discarded.

9. The method according to claim 1, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-U is a proxy. When the node is respectively associated with the GTP-U tunnel that is established by the proxy node and the access network node, the method further includes:

Determining that when the user terminal UE using the abnormal X2-C is served by the proxy node, transmitting a GTP-U error indication to the proxy node, and the sent GTP-U error indication carries the proxy node to allocate to the proxy node The tunnel identification information corresponding to the abnormal X2-C.

10. The method of claim 1, wherein the control plane interface type only includes management S1-U

When the S1-C interface is used, the GTP-U error indication is processed, including: When receiving a GTP-U error indication from the proxy node, the proxy node forwards the GTP-U error indication to the core network node;

Upon receiving a GTP-U error indication from the core network node, the proxy node forwards the GTP-U error indication to the proxy node.

11. The method of claim 1 wherein the control plane interface type only includes management S1-U

When the S1-C interface is used, the GTP-U error indication is processed, including:

The proxy node obtains the tunnel identifier information in the GTP-U error indication, and determines the bearer corresponding to the acquired tunnel identifier information.

The proxy node initiates a deactivation process for the determined bearer to the proxy node and the core network node, respectively.

The method according to any one of claims 1 to 11, wherein the tunnel identification information includes a tunnel end identifier TEID and a transport layer address.

The method according to any one of claims 1 to 11, wherein the proxy node is a donor evolved base station DeNB, the access network node is an evolved base station eNB, and the proxy node is a relay node RN The core network node is a serving gateway; or

The proxy node is a home evolved base station gateway He B GW, and the proxy node and the access network node are different home base stations He B, and the core network node is a serving gateway.

14. A user plane general packet radio service tunneling protocol GTP-U tunnel error processing method, which is characterized in that:

Receiving, by the proxy node, a GTP-U error indication sent by the proxy node, wherein the proxy node establishes a corresponding GTP-U tunnel S1-U with the proxy node and the core network node respectively;

15. The method according to claim 14, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-U is a proxy. When the node and the GTP-U tunnel corresponding to the same bearer are established between the node and the access network node, the proxy node processes the GTP-U error indication, including:

Obtaining tunnel identification information in the GTP-U error indication;

The method according to claim 15, wherein the GTP-U tunnel error processing is performed by the proxy node according to the determined GTP-U tunnel type of the abnormality, which specifically includes:

When the abnormal GTP-U tunnel is S 1 -U, the bearer corresponding to the acquired tunnel identifier information is determined; A deactivation process for the determined bearer is initiated.

The method according to claim 15, wherein the GTP-U tunnel error processing is performed by the proxy node according to the determined GTP-U tunnel type in which the abnormality occurs, which specifically includes:

When an abnormal GTP-U tunnel is X2-U, mark the X2-U with an abnormality;

After receiving the data to be sent to the proxy node by the X2-U having the abnormality, the data is directly discarded.

The method according to any one of claims 14 to 17, wherein the tunnel identification information comprises a tunnel end identifier TEID and a transport layer address.

The method according to any one of claims 14 to 17, wherein the proxy node is a donor evolved base station DeNB, the access network node is an evolved base station eNB, and the proxy node is a relay node RN. The core network node is a serving gateway; or

20. A proxy device, comprising:

The proxy device according to claim 20, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-U is When the proxy device and the GTP-U tunnel corresponding to the same bearer are established between the proxy node and the access network node, the error processing unit is specifically configured to: when receiving the GTP-U error indication from the proxy node, obtain the location The tunnel identification information in the GTP-U error indication;

The proxy device according to claim 21, wherein the error processing unit determines that the GTP-U tunnel having an abnormality only includes S1-U, or includes both S1-U and X2-U, and performs a GTP-U tunnel The error processing includes: determining a bearer corresponding to the tunnel identifier information in the GTP-U error indication;

23. The proxy device of claim 21 wherein the error handling unit determines that an abnormal GTP-U is present The GTP-U tunnel error handling is performed when the tunnel includes only the S1U or the S1U and the X2-U, and the method includes: determining the bearer corresponding to the tunnel identifier information in the GTP-U error indication;

The proxy device according to claim 21, wherein the error processing unit determines that the GTP-U tunnel error processing is performed when the GTP-U tunnel having the abnormality only includes the X2-U, and specifically includes:

The proxy device according to claim 20, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-C interface When the U is a GTP-U tunnel corresponding to the same bearer established between the proxy device and the access node and the access network node, the error handling unit is specifically configured to:

Determining, by the proxy node, the tunnel identity information of the S1-U corresponding to the bearer allocated to the core network node; sending a GTP-U error indication to the core network node, where the sent GTP-U error indication carries the Determined tunnel identification information.

The proxy device according to claim 20, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-C interface When the U is a GTP-U tunnel corresponding to the same bearer established between the proxy device and the access node and the access network node, the error handling unit is further configured to:

28. The proxy device according to claim 20, wherein the control plane interface type includes management at the same time

S 1-C interface of S 1-U and X2-C interface for managing X2-U, and the X2-U is a GTP-U corresponding to the same bearer established between the proxy device and the node being connected and the access network node When tunneling, the error handling unit is further used to:

When receiving the GTP-U error indication sent by the access network node, determining that the X2-C managed by the X2-U interface is abnormal; Determining that when the user terminal UE using the abnormal X2-C is served by the proxy node, transmitting a GTP-U error indication to the proxy node, and the sent GTP-U error indication carries the proxy node to allocate to the proxy device. The abnormal X2-C tunnel identification information appears.

The proxy device according to claim 20, wherein when the control plane interface type only includes the S1-C interface for managing S1-U, the error handling unit is specifically configured to:

Forwarding the GTP-U error indication to the core network section when receiving the GTP-U error indication from the proxy node, forwarding the GTP-U error indication when receiving the GTP-U error indication from the core network node To be commissioned

The proxy device according to any one of claims 20 to 30, wherein the proxy device is a donor evolved base station De B, the access network node is an evolved base station e B, and the proxy node is a relay node RN, the core network node is a serving gateway; or

The proxy device is a home evolved base station gateway He B GW, and the proxy node and the access network node are different home base stations He B, and the core network node is a serving gateway.

32. A proxy device, comprising:

An error information receiving unit, configured to receive a GTP-U error indication sent by the proxy node, wherein the proxy node establishes a GTP-U tunnel S 1 -U corresponding to the same bearer between the proxy device and the core network node;

33. The proxy device according to claim 32, wherein the control plane interface type includes an S1-C interface for managing S1-U and an X2-C interface for managing X2-U, and the X2-U When the proxy node is respectively associated with the GTP-U tunnel of the same bearer established between the proxy device and the access network node, the user plane error processing unit is specifically configured to:

Obtaining tunnel identification information in the GTP-U error indication;

The proxy device according to claim 33, wherein the user plane error processing unit is specifically configured to: When the abnormal GTP-U tunnel is the Sl-U, the bearer corresponding to the acquired tunnel identifier information is determined; and the deactivation process for the determined bearer is initiated.

The proxy device according to claim 33, wherein the user plane error processing unit is specifically configured to:

When the abnormal GTP-U tunnel is X2-U, the abnormal X2-U is marked; after receiving the data to be sent to the proxy node by the X2-U having the abnormality, the data is directly discarded. .

The proxy device according to any one of claims 32 to 35, wherein the proxy device is a relay node RN, the proxy node is a donor evolved base station DeNB, and the access network node is an evolved a base station eNB, where the core network node is a serving gateway; or

The proxy device and the access network node are different home base stations He B , the proxy node is a home evolved base station gateway He B GW, and the core network node is a serving gateway.