WO2010088794A1

WO2010088794A1 - Method and system for processing context in evolution network

Info

Publication number: WO2010088794A1
Application number: PCT/CN2009/070346
Authority: WO
Inventors: 陈卓; 王学龙
Original assignee: 华为技术有限公司
Priority date: 2009-02-03
Filing date: 2009-02-03
Publication date: 2010-08-12

Abstract

The embodiments of the present invention relate to a method and system for processing context in evolution network. The method includes the following steps: the User Equipment (UE) context release indication message which indicates a Core Network (CN) node to release the information related to the UE is sent to the CN node; the information related to the UE is released. A Radio Access Network (RAN) node device and a CN node device are also provided by the embodiments of the present invention. The RAN node device includes a first sending module and a first release module, and the first sending module sends the UE context release indication message which indicates the CN node to release the information related to the UE to the CN node; the first release module releases the information related to the UE. The embodiments of the present invention improve the flexibility and efficiency of the system effectively.

Description

Method and system for processing context in an evolved network

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and system for processing context in an evolved network. Background technique

Currently, in the third Generation Partnership Ge ¹ J (3rd generation partner project, hereinafter referred to as: 3GPP), the manufacturers are actively studying the evolution of the network, including long-term evolution (Long Term Evolved, hereinafter referred to as: LTE) networks and systems System Architecture Evolved (SAE) network. The purpose of LTE or SAE networks is to provide a network that reduces latency, increases user data rates, improves system capacity and coverage, and low cost. The LTE/SAE network architecture consists of three parts: User Equipment (hereinafter referred to as UE), Radio Access Network (hereinafter referred to as RAN), and Core Network (hereinafter referred to as CN). As shown in FIG. 1 , it is a schematic diagram of a network architecture of an evolved network in the prior art, including: an Evolved Universal Terrestrial Radio Access Network (E_UTRAN), and an Evolved Packet (Evolved Packet) CN, hereinafter referred to as: EPC) and some auxiliary entities, control entities and external network entities; wherein E-UTRAN consists of Evolved NodeB (hereinafter referred to as: eNB); EPC includes Mobility Management Entity (hereinafter) Abbreviation: MME), Serving Gateway, Packet Data Network Gateway (PDN-GW) and Home Subscriber Server (hereinafter referred to as HSS), among them, Li E The main function is to save the UE's mobility management context, such as: user's identity, mobility management status and location information, and so on. When the UE interacts with the LTE or SAE network, for example, when the UE performs an operation such as registration, area update, service request, and handover, the UE must first establish a connection with the LTE or SAE network. Connection The method includes: a connection between the UE and the RAN, a connection between the RAN and the CN, a connection inside the CN, and a connection between the CN and an external network. The connection between the UE and the RAN is called a Radio Resource Control (hereinafter referred to as RRC) connection, and the connection is an air interface connection; the connection between the RAN and the CN is called an S1 connection. As shown in FIG. 2, a flowchart for establishing an RRC connection and an S1 connection for a UE in the prior art mainly includes the following steps: Step 21: A UE sends an RRC connection setup request message to an eNB. Step 22: The eNB receives the RRC connection setup. After the request message, if the request message is accepted, the RRC connection establishment command is sent to the UE. Step 23: After receiving the RRC connection establishment command, the UE sends an RRC connection setup complete message to the eNB, thereby establishing an RRC connection, where the RRC connection is established. The setup complete message carries a NAS message, for example: an attach request (ATTACH REQUEST) message, starting to store the context of the UE in the UE and the eNB, for example: RAN and/or RRC context, hereinafter referred to as: RRC context; step installation 24, eNB is The UE selects the MME, and sends the NAS message sent by the UE to the MME through the initial UE message, and starts to establish the S1 connection. Step 25: If the MN receives the registration of the UE, for example: accepting the attach request message, the MME saves the The S1 context related to the UE, and sending an initial context setup request message to the eNB, requesting the eNB to establish an S1 context for the UE and an evolved universal terrestrial radio access network wireless access bearer For example, the E-RAB includes a default bearer, that is, a UE, for example, an EUT ved Univer sas Terres tr ia l Radio Acces s Ne twork Radi o Acces s Bearer (hereinafter referred to as E-RAB). The first bearer established when connected to the specific packet data network; Step 26: The eNB informs the UE to establish the E-RAB through the RRC connection reconfiguration message; Step 27: If the UE can establish the E-RAB, the RRC connection reconfiguration is completed. The MME sends an initial context setup response to the MME, and the initial context establishment result (including the E-RAB successful establishment) is fed back to the MME, and then the MME can continue to perform the related process on the EPC side. In the above process, if the eNB cannot establish an S1 context or set a bearer for the UE, the process will fail. However, at this time, the MN also has information about the user equipment, including the S1 context and/or resources allocated for the user equipment, and the eNB also has information about the user equipment, including the RRC context and the \ or S1 context and Or resources allocated for user devices. In order to save system resources, these contexts and \ or resources must be removed or released. In addition, in some cases, for example: network management needs, or long-term users Inactive, or EPC decision, etc., for a connected UE, the network may also release the RRC connection and/or the S1 connection of the UE. At this time, it is also necessary to delete or release the context saved by the E and the eNB. Or resources. Summary of the invention

The embodiments of the present invention provide a method and system for processing contexts in an evolved network, which are used to delete or release contexts and/or resources saved on the RAN node and the CN node, and effectively improve system flexibility and system efficiency.

An embodiment of the present invention provides a method for processing a context in an evolved network, including: sending, to a core network node, a user equipment context release indication message for instructing the core network node to release information related to a user equipment;

Release information about the user device.

The embodiment of the present invention further provides a method for processing a context in an evolved network, including: receiving, by a radio access network node, a user equipment context release indication message for instructing a core network node to release information related to a user equipment;

And releasing information related to the user equipment according to the user equipment context release indication message. The embodiment of the present invention further provides a method for processing a context in an evolved network, including: sending an initial context setup failure message to a core network node, and determining to request the core network node to release information related to the user equipment;

And transmitting, according to the determination result, a user equipment context release request message for requesting the core network node to release information related to the user equipment to the core network node;

Receiving, by the core network node, a user equipment context release command message for instructing the radio access network node to release information related to the user equipment, according to the user equipment context release request message, releasing information related to the user equipment.

The embodiment of the present invention further provides a method for processing a context in an evolved network, including: determining, according to an initial context setup failure message sent by a radio access network node, the wireless The access network node cannot establish an S1 context and/or set a bearer for the user equipment;

Receiving, by the radio access network node, a user equipment context release request message for requesting release of information related to the user equipment, and returning, according to the determination result, returning to the radio access network node, for invoking the radio access network a user equipment context release command message that the node releases information related to the user equipment;

And releasing information related to the user equipment according to the user equipment context release complete message sent by the radio access network node for the user equipment context release command message.

The embodiment of the invention further provides a method for processing a context in an evolved network, comprising: sending an initial context setup failure message to a core network node;

Select a new core network node for the user device.

The embodiment of the present invention further provides a method for processing a context in an evolved network, including: receiving an initial context setup failure message sent by a radio access network node;

Establishing a failure message according to the initial context, selecting a new core network node for the user equipment, and releasing information related to the user equipment.

The embodiment of the invention further provides a wireless access network node device, including:

a first sending module, configured to send, to the core network node, a user equipment context release indication message for instructing the core network node to release information related to the user equipment;

The first release module is configured to release information related to the user equipment.

The embodiment of the invention further provides a core network node device, including:

a first receiving module, configured to receive a user equipment context release indication message sent by the radio access network node to instruct the core network node to release information related to the user equipment;

And a second release module, configured to release information related to the user equipment according to the user equipment context release indication message.

a second sending module, configured to send an initial context setup failure message to the core network node, where the second determining module is configured to determine that the release request to the core network node is related to the user equipment Information, and instructing the second sending module to send, to the core network node, a user equipment context release request message for requesting the core network node to release information related to the user equipment; and a second receiving module, configured to receive a user equipment context release command message sent by the core network node according to the user equipment context release request message for instructing the radio access network node device to release information related to the user equipment;

And a third release module, configured to: after the second receiving module receives the user equipment context release command message, release information related to the user equipment.

a third receiving module, configured to receive an initial context setup failure message sent by the radio access network node, and receive a user equipment context release request message sent by the radio access network node for requesting release of information related to the user equipment, and Receiving a user equipment context release complete message sent by the radio access network node for a user equipment context release command message;

a third determining module, configured to determine, according to the initial context setup failure message received by the third receiving module, that the radio access network node cannot establish an S1 context and/or a configuration bearer for the user equipment;

a third sending module, configured to return, according to the determining result of the third determining module, a user equipment context release command for instructing the radio access network node to release information related to the user equipment to the radio access network node Message

And a fourth release module, configured to release information related to the user equipment according to the user equipment context release complete message received by the third receiving module.

And a fourth sending module, configured to send an initial context setup failure message to the core network node, where the first selection module is configured to select a new core network node for the user equipment.

a fifth receiving module, configured to receive an initial context setup failure message sent by the radio access network node; a second selection module, configured to select a new core network node for the user equipment according to the initial context establishment failure message received by the fifth receiving module;

And a fifth release module, configured to: according to the initial context establishment failure message received by the fifth receiving module, release information related to the user equipment.

The embodiment of the present invention further provides a system for processing a context in an evolved network, including a radio access network node device and a core network node device, where the radio access network node device is configured to send to the core network node device a user equipment context release indication message indicating that the core network node device releases information related to the user equipment, releasing information related to the user equipment; and the core network node device is configured to receive the information sent by the wireless access network node device And a user equipment context release indication message indicating that the core network node device releases information related to the user equipment, and releasing information related to the user equipment according to the user equipment context release indication message.

The embodiment of the present invention further provides a system for processing a context in an evolved network, including a radio access network node device and a core network node device, where the radio access network node device is configured to send an initial context to the core network node device. Establishing a failure message, and determining to request the core network node device to release information related to the user equipment, and sending, according to the determination result, the request to the core network node device to release the user equipment related to the user equipment a user equipment context release request message of the information, the user equipment context release sent by the core network node device according to the user equipment context release request message for instructing the radio access network node device to release information related to the user equipment a command message, releasing information related to the user equipment; the core network node device is configured to determine, according to the initial context setup failure message sent by the radio access network node device, that the radio access network node device cannot be established for the user equipment On S1 And below, and/or setting a bearer, receiving a user equipment context release request message sent by the radio access network node device for requesting release of information related to the user equipment, according to the determination result, to the radio access network node device Returning a user equipment context release command message for instructing the radio access network node to release information related to the user equipment, according to the user equipment context release sent by the radio access network node device for the user equipment context release command message Complete the message and release information about the user device.

The embodiment of the present invention further provides a system for processing a context in an evolved network, including a radio access network node device and a core network node device, where the radio access network node device is configured to send an initial context to the core network node device. Establishing a failure message, selecting a new core network node for the user equipment; the core network node device is configured to receive an initial context setup failure message sent by the radio access network node device, and establish a failure message according to the initial context, as a user The device selects a new core network node and releases information about the user device.

The method and system for processing context in an evolved network provided by the embodiments of the present invention increase the control capability and flexibility of the wireless access network node, improve the processing efficiency of the wireless access network node, and thus effectively improve system flexibility and system. effectiveness. DRAWINGS

1 is a schematic diagram of a network architecture of an evolved network in the prior art;

2 is a flowchart of establishing an RRC connection and an S1 connection by a UE in the prior art;

3 is a flowchart of a first embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 4 is a flowchart of a second embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 6 is a flowchart of a fourth embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 7 is a flowchart of a fifth embodiment of a method for processing a context in an evolved network according to the present invention; 8 is a flowchart of a sixth embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 9 is a flowchart of a seventh embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 11 is a flowchart of a ninth embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 12 is a flowchart of a tenth embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 13 is a flowchart of an eleventh embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 14 is a flowchart of processing an evolved network according to the present invention; A flowchart of a method embodiment of the twelfth embodiment; 15 is a flowchart of a thirteenth embodiment of a method for processing a context in an evolved network according to the present invention; FIG. 16 is a flowchart of a fourteenth embodiment of a method for processing a context in an evolved network according to the present invention; Schematic diagram of the structure of the first embodiment;

18 is a schematic structural diagram of a second embodiment of a RAN node device according to the present invention;

19 is a schematic structural diagram of a first embodiment of a CN node device according to the present invention;

20 is a schematic structural diagram of a second embodiment of a CN node device according to the present invention;

21 is a schematic structural diagram of a third embodiment of a RAN node device according to the present invention;

22 is a schematic structural diagram of a fourth embodiment of a RAN node device according to the present invention;

23 is a schematic structural diagram of a third embodiment of a CN node device according to the present invention;

24 is a schematic structural diagram of a fourth embodiment of a CN node device according to the present invention;

25 is a schematic structural diagram of a fifth embodiment of a RAN node device according to the present invention;

26 is a schematic structural diagram of a sixth embodiment of a RAN node device according to the present invention;

27 is a schematic structural diagram of a fifth embodiment of a CN node device according to the present invention;

28 is a schematic structural diagram of a sixth embodiment of a CN node device according to the present invention. detailed description

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. Referring to the technical solution shown in FIG. 2, in order to delete or release these contexts and/or resources, after step 25, if the eNB finds that the S1 context cannot be established for the UE and/or the bearer is set, the eNB feeds back to the E in step 26. The initial context setup failure message, and then the eNB releases the RRC connection with the UE, directly deleting or releasing the UE-related information locally. The set bearer may include an E-RAB and/or a default bearer. After receiving the initial context setup failure message sent by the eNB, the MN E will perform the release process of the context and/or resources of the EPC side UE. However, this may cause the MME to fail to initiate a new attempt. For example, the MME may re-attempt to send an initial context setup request message to the eNB, and the eNB may re-attempt to establish the context of the UE and/or set the bearer according to its own situation. Therefore, this local release approach leads to a lack of flexibility in the system, allowing users to successfully access the network or establish a connection. The possibility of picking up is reduced, affecting the user's feelings. In order to improve the possibility of the user successfully accessing the network or establishing a connection, after the initial E receives the initial context setup failure message sent by the eNB, the solid E re-transmits the initial context setup request message in step 25 to the eNB, requesting the eNB Re-attempt to establish an S1 context for the UE and/or set the bearer until the eNB successfully establishes the S1 context and/or sets the bearer for the UE. If the eNB fails to successfully establish an S1 context and/or a set bearer for the UE, the MME sends a UE context release command to the eNB, and after receiving the instruction, the eNB releases the RRC connection with the UE, and releases the RRC connection. The information related to the UE is then sent to the MME E to release the UE context release complete message. After receiving the message, the MN E releases the information about the UE on the MME. This approach, while increasing the likelihood of process success, limits the capabilities of the eNB even if the eNB does not establish a context and/or set bearer for the UE, eg, if the eNB is at a particular capability and/or load and/or Or management state and/or condition, etc., the eNB cannot actively request the MME to initiate a context and/or connection release procedure, but must wait for the MME's instruction. Therefore, this MME-dependent method leads to poor system flexibility, resulting in Unnecessary signaling interactions reduce system efficiency.

As shown in FIG. 3, the flowchart of the first embodiment of the method for processing a context in an evolved network according to the present invention may specifically include the following steps:

Step 301: The RAN node sends, to the CN node, a UE context release indication message for instructing the CN node to release information related to the UE.

Specifically, when the RAN node may release the RRC connection of the UE for network management and/or network adjustment/configuration/optimization or the UE is no longer active, or the RAN node finds that the UE has lost contact, or the UE's air interface fails. The recovered error, or the RRC connection has been released/interrupted, the RAN node may delete and/or release the context and/or resources related to the UE as soon as possible, and then notify or inform or inform or indicate to the CN node; The UE context release indication message is not limited to being a special message, and may also be used as a parameter in other messages, or may be a network management operation or the like;

Step 302: The RAN node releases information related to the UE.

It should be noted that the sequence between step 301 and step 302 may be reversed, that is, the RAN node. The information about the UE may be released after the UE context release indication message is sent to the CN node, or may be released before the UE context release indication is sent to the CN node.

In this embodiment, the RAN node can release the information related to the UE as early as possible, and then notify or inform or inform or instruct the CN node, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 4, the flowchart of the second embodiment of the method for processing a context in an evolved network according to the present invention may specifically include the following steps:

Step 401: The CN node receives a UE context release indication message sent by the RAN node to instruct the CN node to release information related to the UE.

Specifically, after receiving the UE context release indication message, the CN node considers that the RAN node has released the information related to the UE, and does not need to instruct the RAN node to perform the release operation, and the CN node can perform related processing on the EPC side, including releasing and Information about the UE, and notification or notification or notification or indication to the relevant network node, for example: SAE Gateway (SAE-GW), releasing information related to the user equipment;

Step 402: The CN node releases information related to the UE according to the UE context release indication message.

In this embodiment, after receiving the UE context release indication message sent by the RAN node, the CN node releases the information related to the UE, and does not need to instruct the RAN node to perform the release operation, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 5, it is a flowchart of a method for processing a context in an evolved network according to a third embodiment of the present invention. In this embodiment, the RAN node may be an eNB, and the CN node may be a specific E. Including the following steps:

Step 41: The eNB sends an RRC connection release message to the UE, thereby releasing an RRC connection with the UE. Step 42: The eNB determines to delete and/or has deleted the RRC context and/or S1 context related to the UE, and/or releases the Resources allocated by the UE;

It should be noted that the sequence between step 41 and step 42 may be reversed, that is, the eNB may determine to release the information related to the UE after sending the RRC connection release message to the UE, or Before transmitting the RRC connection release message to the UE, determining to release information related to the UE; Step 43: The eNB sends a UE context release indication message to the MME;

Specifically, when the eNB considers it necessary to release the UE's S1 connection, delete the UE-related context, and/or release the resources allocated for the UE, the eNB may perform the deletion and/or release procedure locally, and notify or inform Or the notification or indication to the MN; the UE context release indication message is not limited to a special message, and may also be used as a parameter in other messages, or may also be a network management operation or the like;

Step 44: The MME performs related processing on the EPC side.

Specifically, after receiving the notification of the eNB, the MME considers that the eNB has performed release of the RRC connection with the UE, deletes the RRC context and/or S 1 context related to the UE, and/or releases the resources allocated for the UE. The MME may perform related processing on the EPC side, including releasing the S 1 context and/or resources allocated for the UE, and notifying other network nodes to delete and/or release the eNB. The context and/or resources associated with the UE.

In this embodiment, the RAN side node may release the connection of the UE and delete the context of the UE and/or resources allocated to the UE as soon as possible, and then notify or inform or inform or indicate to the MME, thereby effectively improving the system. Flexibility and system efficiency.

As shown in FIG. 6, the flowchart of the fourth embodiment of the method for processing a context in an evolved network according to the present invention may specifically include the following steps:

Step 51: The eNB determines to delete and/or has deleted the RRC context and/or S 1 context related to the UE, and/or releases the resources allocated for the UE;

Step 52: The eNB sends a UE context release indication message to the MME.

Specifically, when the eNB considers it necessary to release the RRC connection and/or the S1 connection of the UE, delete the context of the UE, and/or release the resources allocated for the UE, the eNB may perform a deletion and/or release procedure locally, and The notification or notification or notification or indication to the EI, the UE context release indication message is not limited to a special message, may also be used as a parameter in other messages, or may be a network management operation or the like; Step 5: The eNB sends an RRC connection release message to the UE.

Specifically, if the RRC connection of the UE has not been released or interrupted, or the RRC context of the UE remains on the eNB, the eNB may release the RRC connection and delete the RRC context;

Step 54: The MME performs related processing on the EPC side.

Specifically, after receiving the notification of the eNB, the MME considers that the eNB has performed release of the RRC connection with the UE, deletes the RRC context and/or S 1 context related to the UE, and/or releases the resources allocated for the UE. Instead of instructing the eNB to perform the release and/or delete operations, the E can perform related processing on the EPC side, including deleting the S1 context related to the UE and/or releasing the resources allocated for the UE, and notifying other network nodes. Delete and/or release UE context and/or resources.

It should be noted that there is no strict timing relationship between step 53 and step 54.

Similar to the technical solution shown in FIG. 4, the RAN side node may release the connection of the UE as soon as possible and delete the context of the UE and/or resources allocated for the UE, and then notify or inform or inform or indicate to the E, thereby Effectively increase system flexibility and system efficiency, but the specific steps taken vary.

As shown in FIG. 7, the flowchart of the fifth embodiment of the method for processing a context in an evolved network according to the present invention may specifically include the following steps:

Step 71: The RAN node sends an initial context setup failure message to the CN node, and determines to request the CN node to release information related to the UE.

Specifically, if the RAN node cannot establish an S1 context and/or a set bearer for the UE, send an initial context setup failure message to the CN node, where the set bearer may include an E-RAB and/or a default bearer;

Step 72: The RAN node sends, to the CN node, a UE context release request message for requesting the CN node to release information related to the UE according to the determination result;

Step 73: The RAN node receives a UE context release command message sent by the CN node according to the UE context release request message for instructing the RAN node device to release information related to the UE, and releases information related to the UE.

In this embodiment, if the RAN node cannot establish the S1 context and/or set the bearer for the UE, the RAN The node determines that the CN node is requested to release the information related to the UE, and after receiving the release instruction of the CN node, releases the information related to the UE, which enhances the control capability and flexibility of the RAN node, and can prevent the CN node from re-issuing unnecessary attempts. The instruction improves the processing efficiency of the RAN node, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 8, the flowchart of the sixth embodiment of the method for processing a context in an evolved network according to the present invention may specifically include the following steps:

Step 81: The CN node establishes a failure message according to an initial context sent by the RAN node, and determines that the RAN node cannot establish an S1 context and/or set a bearer for the UE.

Wherein, setting the bearer may include an E-RAB and/or a default bearer;

Step 82: The CN node receives a UE context release request message sent by the RAN node for requesting release of UE-related information, and returns, according to the determination result, a UE context release command for instructing the RAN node to release UE-related information. Message

Step 83: The CN node releases the information related to the UE according to the UE context release complete message sent by the RAN node for the UE context release command message.

In this embodiment, if the RAN node cannot establish the S1 context and/or set the bearer for the UE, the CN node receives the request of the RAN node to release the UE-related information, and then instructs the RAN node to release the information related to the UE, The CN node releases the UE-related information, which can prevent the CN node from re-issuing unnecessary attempting instructions, improve the processing efficiency of the RAN node, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 9, the flow chart of the seventh embodiment of the method for processing the context in the evolved network is different from the technical solution shown in FIG. 2, and the step 25 may specifically include the following steps:

Step 66: The eNB sends an initial context setup failure message to the MN.

Specifically, if the eNB is unable to establish the S1 context and/or the set bearer for the UE, the initial context setup failure message is sent to the MME, where the set bearer may include the E-RAB and/or the default bearer; Step 67, the eNB determines Requesting the MME to delete the RRC context and/or S 1 associated with the UE And, and/or release resources allocated for the UE;

Step 68: The eNB sends a UE context release request message to the MN.

The UE context release request message is not limited to a special message, and may also be used as a parameter in other messages, for example: a specific cause value, or may be a network management operation or the like;

Step 69: The MME sends a UE context release command message to the eNB.

Step 61: The eNB sends an RRC connection release request message to the UE.

The connection release request message may include a cause value (Caus e ) of the air interface release; the cause value may be indication information indicating that the UE performs a preset operation and/or a special cause value. The indication information indicating that the UE performs the preset operation may include indication information indicating that the UE establishes an RRC connection with the RAN node; or indication information indicating that the UE establishes an RRC connection with the new RAN node; or indicating that the UE is after the preset time and/or Or indication information that establishes an RRC connection with the RAN node under the trigger of the preset instruction; or indication information indicating that the RAN node instructs the RAN node to select a new CN node. After receiving the indication information, the UE may abandon the retry, that is, after receiving the indication information, the UE does not retry the interaction with the RAN node within a preset time, for example, the eNB establishes a RAN connection, or only in other instructions. The interaction with the RAN node may be performed again under the trigger of the indication, or may be re-tried to establish a RAN connection with the RAN node after receiving the indication information. There may be two ways to establish a RAN connection with the RAN node again: 1;) retrying to establish a RAN connection on the original RAN node, eg, the eNB; 2), the UE may reselect a new cell and/or The eNB and/or the access system retry to establish a RAN connection with the RAN node, and which retry method is selected may also depend on implementation considerations such as network planning, load, interference, and signal strength;

Step 61: The eNB deletes an RRC context and/or an S1 context related to the UE, and/or releases a resource allocated for the UE.

Step 61: The eNB sends a UE context release complete message to the MME.

Step 61 3. The E E deletes the S 1 context related to the UE and/or releases the resources allocated for the UE. This embodiment increases the control capability and flexibility of the eNB, and can avoid the MME re-issuing The attempted instruction is to improve the processing efficiency of the eNB, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 10, the flowchart of the eighth embodiment of the method for processing the context in the evolved network is different from the technical solution shown in FIG. 2, and the step 25 may specifically include the following steps:

Step 76: The eNB sends an initial context setup failure message to the MN.

Step 77: The eNB determines to release the RRC connection, delete the RRC context and/or S 1 context related to the UE, and/or release the resources allocated for the UE.

Step 78: The eNB sends an RRC connection release request message to the UE. The connection release request message may include a cause value (Caus e ) of the air interface release. The cause value may be indication information indicating that the UE performs a preset operation, and may be other Special reason value. The indication information indicating that the UE performs the preset operation may include indication information indicating that the UE establishes an RRC connection with the RAN node; or indication information indicating that the UE establishes an RRC connection with the new RAN node; or indicating that the UE is after the preset time and/or Or indication information that establishes an RRC connection with the RAN node under the trigger of the preset instruction; or indication information indicating that the RAN node instructs the RAN node to select a new CN node. After receiving the indication information, the UE may abandon the retry, that is, after receiving the indication, the UE does not retry the interaction with the RAN node within a preset time, for example: the eNB establishes a RAN connection, or only in other instructions or The interaction with the RAN node will only be performed again under the trigger of the indication. In addition, after receiving the indication, the UE may retry to establish a RAN connection with the RAN node again, and retrying to establish a RAN connection with the RAN node may be performed in two ways: 1). Initiating the RAN on the original RAN node, for example, the eNB. The connection reconstruction process; 2), the UE may reselect a new RAN node, and establish a RAN connection with the new RAN node. If the connection is established on the new RAN node, the information on the original RAN node needs to be deleted. The deletion may be performed by the RAN node itself, or may be under the indication or request or command of other nodes or UEs. delete. Moreover, when the UE retryes again, the UE may carry specific indication information to the eNB to assist and/or direct the eNB to perform appropriate processing, for example, selecting a suitable CN node, for example, an MME. Which retry method to choose depends on implementation considerations such as network planning, load, interference, and signal strength; Step 79: The UE sends a UE context release indication message to the MME.

The UE context release indication message is not limited to a special message, and may also be used as a parameter in other messages, for example: a specific cause value, or may be a network management operation or the like;

Step 71: The MME deletes the S1 context related to the UE, and/or releases the resource allocated to the UE. Step 71: The eNB deletes an RRC context and/or an S1 context related to the UE, and/or releases a resource allocated for the UE.

This embodiment increases the control capability and flexibility of the eNB, and can prevent the MME from re-issuing unnecessary command instructions, which can improve the processing efficiency of the eNB, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 11 , the flowchart of the ninth embodiment of the method for processing a context in an evolved network according to the present invention may specifically include the following steps:

Step 91: The RAN node sends an initial context setup failure message to the CN node.

Specifically, if the RAN node is unable to establish an S1 context and/or a set bearer for the UE, the RAN node sends an initial context setup failure message to the CN node, where the set bearer may include an E-RAB and/or a default bearer;

Step 92: The RAN node selects a new CN node for the UE.

In this embodiment, when the RAN node cannot establish the S1 context and/or set the bearer for the UE, the RAN node may reselect a CN node, which increases the control capability and flexibility of the RAN node, and can avoid the RAN node always The failure scenario improves the UE access success rate, which effectively improves system flexibility and system efficiency.

As shown in FIG. 12, the flowchart of the tenth embodiment of the method for processing a context in an evolved network according to the present invention may specifically include the following steps:

Step 1 01: The CN node receives an initial context setup failure message sent by the RAN node. Specifically, the CN node may determine, according to the initial context setup failure message, that the RAN node cannot establish an S1 context and/or set a bearer for the UE, where Fixed bearers may include E-RAB and/or Default bearer

Step 1 02: The CN node establishes a failure message according to the initial context, selects a new CN node for the UE, and releases information related to the UE. The RAN node then retryes to establish an S 1 connection with the new CN node.

In this embodiment, when the RAN node cannot establish the S1 context and/or set the bearer for the UE, the CN node can reselect a CN node, which increases the control capability and flexibility of the CN node, and can avoid the RAN node always The failure scenario improves the UE access success rate, which effectively improves system flexibility and system efficiency.

As shown in FIG. 13 , the flowchart of the eleventh embodiment of the method for processing the context in the evolved network is different from the technical solution shown in FIG. 2 , after the step 25, when the eNB receives the MME sends the After the initial context setup request message is found, it is found that the S1 context and/or the set bearer cannot be established for the UE, and the method further includes the following steps:

Step 86: The eNB sends an initial context setup failure message to the MN.

Step 87: The MME deletes the S1 context related to the UE, and/or releases the resource allocated to the UE. Step 88: The eNB determines to reselect a new MN;

Specifically, for various considerations, such as: eNB capability, load, network topology, or other implementation considerations, the eNB may decide to reselect the MME;

Step 89: The eNB sends an initial UE message to the new MN.

Step 81: After receiving the initial UE message sent by the eNB, the new MN sends an initial context establishment request message to the eNB.

Through this step, the new MN initiates the establishment process of the S1 connection to the eNB;

Step 81: The eNB informs the UE to establish an E-RAB through an RRC connection reconfiguration message, and if the UE can establish an E-RAB, sends an RRC connection reconfiguration complete response message to the eNB;

Step 81 2. The eNB establishes an S 1 context.

Step 81 3. The eNB sends an initial context setup response message to the new MN.

It should be noted that, in this embodiment, there is no strict time between step 86 and step 89. In order. At the same time, the eNB may re-initiate one or more new MME selection procedures, that is, when the eNB finds that the S1 context cannot be established for the UE through a certain E or cannot establish a set bearer for the UE, the eNB may select a new solid again. E.

In this embodiment, when the eNB cannot establish the S1 context and/or set the bearer for the UE, the eNB may decide to reselect an EPC node. The scheme substantially increases the control capability and flexibility of the eNB, can avoid the scenario where the eNB always fails, and improves the UE access success rate, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 14 , a flowchart of a twelfth embodiment of a method for processing a context in an evolved network according to the present invention is different from the technical solution shown in FIG. 13 in that step 86 is performed first, and then step 89 is performed. After 86 can include the following steps:

Step 1 31: The MN sends a reselection indication message to the eNB according to the initial context establishment failure message, where the reselection indication message includes reselection indication information.

On the basis of the technical solution shown in FIG. 12, the step 88 may be specifically as follows: Step 1 32: The eNB determines, according to the reselection indication information carried in the reselection indication message, that the UE selects a new MME.

In this embodiment, when the eNB cannot establish the S1 context and/or set the bearer for the UE, the eNB may reselect an EPC node under the direction of the MME. The scheme substantially increases the control capability and flexibility of the eNB, can avoid the scenario where the eNB always fails, and improves the UE access success rate, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 15, a flowchart of a thirteenth embodiment of a method for processing a context in an evolved network according to the present invention. On the basis of the technical solution shown in FIG. 2, after the step 25, when the eNB receives the initial transmission of the E-E, After the context setup request message is found, it is found that the S1 context cannot be established for the UE and/or the bearer is set, and the following steps can also be included:

Step 96: The eNB sends an initial context setup failure message to the MN.

Step 97: The MME determines to select a new MME. After receiving the initial context setup failure message, the MME finds that the eNB cannot establish an S1 context and/or a set bearer for the UE, and the MME may determine the UE as the UE. Re-select a new MN, this re-selection can be based on capabilities such as eNB and/or MN, load, network topology or other implementation considerations;

Step 98: The MME sends an initial UE message to the new MME. After determining to reselect the new MME, the MME may send a request and/or an indication and/or a message to the new MME, for example: forwarding related information of the UE and/or Or message, the new EPC node (such as solid E) can initiate on the eNB if the UE is accepted

The establishment process of the UE context and/or S 1 connection;

Step 99: The MME releases the S1 context related to the UE and/or the resource allocated for the UE. Step 91: After receiving the initial UE message sent by the eNB, the new MME sends an initial context setup request message to the eNB. Step: initiate a process of establishing a UE context and/or an S1 connection to the eNB;

Step 91: The eNB informs the UE to establish an E-RAB through an RRC connection reconfiguration message, and if the UE can establish an E-RAB, sends an RRC connection reconfiguration complete response to the eNB;

Step 91 2. The eNB establishes an S 1 context.

Step 91: The eNB sends an initial context setup response message to the new MN.

In this embodiment, when the EPC node finds that the context and/or the setup bearer cannot be established for the UE on the eNB, the EPC node may decide to reselect an EPC node, thereby increasing the control capability and flexibility of the EPC node, and avoiding The EPC node always fails, improving the UE access success rate, thereby effectively improving system flexibility and system efficiency.

FIG. 16 is a flowchart of a fourteenth embodiment of a method for processing a context in an evolved network according to the present invention. The difference from the technical solution shown in FIG. 15 is that the initial context established by the eNB to the MME is established in step 96. The failure message includes a reselection indication information. Based on the technical solution shown in FIG. 14, step 97 may specifically be as follows:

Step 914: The MME determines to select a new MME according to the reselection indication information carried in the initial context establishment failure message.

In this embodiment, when the EPC node finds that the UE cannot establish a context and/or sets a load for the UE, the EPC node may decide to reselect an EPC node under the instruction of the eNB, thereby The control capability and flexibility of the EPC node are increased, and the situation that the EPC node always fails is avoided, and the UE access success rate is improved, thereby effectively improving system flexibility and system efficiency.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The steps of the foregoing method embodiments are included; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

As shown in FIG. 17, a schematic structural diagram of a first embodiment of a RAN node device according to the present invention may specifically include a first sending module 151 and a first releasing module 152, where the first sending module 151 is configured to send an indication to the CN node. The UE node releases the UE context release indication message of the information related to the UE; specifically, when the RAN node device may release the RRC connection of the UE for reasons such as network management and/or network adjustment/configuration/optimization or the UE is no longer active, Or the RAN node device finds that the UE has lost contact, or the UE's air interface has an unrecoverable error, or the RRC connection has been released/interrupted, and the RAN node device can delete and/or release the UE-related context and/or resources as soon as possible. Then notify or inform or inform or instruct the CN node; it should be noted that the UE context release indication message is not limited to a special message, and may also be used as a parameter in other messages, or may also be a network management Operation, etc.; the first release module 152 is configured to release information related to the UE; specifically, A sending module 151 may first send a UE context release indication message to the CN node, and then the first release module 152 may release the information related to the UE, or the first release module 152 may first release information related to the UE, and the first sending module 151 The UE context release indication message is sent to the CN node.

In this embodiment, the first release module 152 can release the information related to the UE as soon as possible, and the first sending module 151 notifies or informs or informs or instructs the CN node, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 18, it is a schematic structural diagram of a second embodiment of a RAN node device according to the present invention. On the basis of the schematic diagram shown in FIG. 15, the first sending module 151 is further configured to: if the RAN node cannot establish the S1 context for the UE, / or set the bearer, send an initial context establishment failure message to the CN node. Ben The embodiment may further include a first determining module 161, configured to determine release of information related to the UE if the RAN node device is unable to establish an S1 context and/or set a bearer for the UE. The first release module 152 is further configured to release information related to the UE according to the determination result of the first determining module 161. The set bearer may include an E-RAB and/or a default bearer.

In this embodiment, the first release module 152 may specifically include a first deleting unit 16 3 and/or a first releasing unit 164, where the first deleting unit 163 is configured to delete an RRC context and/or an S 1 context related to the UE. The first release unit 164 is configured to release resources allocated for the UE.

In this embodiment, the first sending module 151 is further configured to send an RRC connection release message to the UE, thereby releasing the RRC connection of the UE. The RRC Connection Release message may include indication information indicating that the UE performs a preset operation. In addition, the packet in the RRC Connection Release message may also include other special cause values. The indication information indicating that the UE performs the preset operation may include indication information indicating that the UE establishes an RRC connection with the RAN node; or indication information indicating that the UE establishes an RRC connection with the new RAN node; or indicating that the UE is after the preset time and/or Or the indication information of establishing an RRC connection with the RAN node triggered by the preset instruction; or indicating the indication information that the RAN node instructs the RAN node to select a new CN node. After receiving the indication information, the UE may abandon the retry, that is, after receiving the indication information, the UE does not perform interaction with the network within a preset time, or may be executed again only when triggered by other instructions or indications. In interaction with the network, an RRC Connection Request message is sent to the RAN node device. In addition, after receiving the indication information, the UE may initiate a retry again, and may initiate the retry again. There are two ways: 1). Initiating a connection reestablishment process on the original RAN node device, for example, an eNB, to the original RAN node. The device sends an RRC connection request message; 2), the UE may reselect a new RAN node device, and send an RRC connection request message to the new RAN node device. Which retry method to choose depends on implementation considerations such as network planning, load, interference, and signal strength.

In this embodiment, if the eNB fails to establish the S1 context for the UE and/or establishes the set bearer, the first sending module 151 first sends an initial context setup failure message to the CN node, and the first determining module 161 determines to release the UE related information. Information, then the first sending module 151 indicates to the CN node to release information related to the UE, instructing the UE to release the RAN connection, and the first deleting unit 163 deletes the information with the UE. The RRC context and/or the SI context; the first release unit 164 releases the resources allocated for the UE, increases the control capability and flexibility of the RAN node device, and can prevent the CN node device from re-issuing unnecessary trial commands and improve the RAN node. The processing efficiency of the equipment effectively increases system flexibility and system efficiency.

As shown in FIG. 19, it is a schematic structural diagram of a first embodiment of a CN node device according to the present invention, which may include a first receiving module 181 and a second releasing module 182, where the first receiving module 181 is configured to receive a RAN node for sending a UE context release indication message indicating that the CN node device releases the information related to the UE; specifically, according to the UE context release indication message, the CN node device may learn that the RAN node has determined to release information related to the UE; The UE-related information is released according to the UE context release indication message.

In this embodiment, the CN node device can be prevented from re-issuing unnecessary attempting instructions, and the processing efficiency of the RAN node is improved, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 20, it is a schematic structural diagram of a second embodiment of a CN node device according to the present invention. The second release module 182 may specifically include a second deletion unit 192 and/or a second release. The unit 193, where the second deleting unit 192 is configured to delete the S1 context related to the UE, and the second releasing unit 193 is configured to release the resource allocated for the UE.

As shown in FIG. 21, it is a schematic structural diagram of a third embodiment of the RAN node device according to the present invention, which may specifically include a second sending module 171, a second determining module 172, a second receiving module 173, and a third releasing module 174, where the second The sending module 171 is configured to send an initial context setup failure message to the CN node. Specifically, if the RAN node device cannot establish an S1 context and/or set a bearer for the UE, the second sending module 171 sends an initial context setup failure message to the CN node. The setting of the bearer may include the E-RAB and/or the default bearer. The second determining module 172 is configured to determine to request the CN node to release information related to the UE, and instruct the second sending module 171 to send the information to the CN node. Requesting, by the CN node, a UE context release request message for releasing information related to the UE; Receiving a UE context release command message for instructing the RAN node device to release information related to the UE, which is sent by the CN node according to the UE context release request message; the third release module 1 74 is configured to receive the UE context release command by the second receiving module 173. After the message, the UE-related information is released.

In this embodiment, if the RAN node device cannot establish the S1 context and/or set the bearer, the CN node may be requested to indicate that the information related to the UE is released, to prevent the CN node from re-issuing unnecessary attempting instructions, and to improve the RAN node device. Processing efficiency, which effectively improves system flexibility and system efficiency.

As shown in FIG. 22, it is a schematic structural diagram of a fourth embodiment of a RAN node device according to the present invention. On the basis of the structure diagram shown in FIG. 21, the second sending module 171 is further configured to send, to the UE, an indication that the UE releases the RRC connection. And an RRC connection release message, where the RRC connection release message includes indication information indicating that the UE performs a preset operation. The indication information indicating that the UE performs the preset operation may include indication information indicating that the UE establishes an RRC connection with the RAN node; or indication information indicating that the UE establishes an RRC connection with the new RAN node; or indicating that the UE is after the preset time and/or Or the indication information of establishing an RRC connection with the RAN node triggered by the preset instruction; or indicating the indication information that the RAN node instructs the RAN node to select a new CN node. In addition, other special cause values may be included in the RRC connection release message. After receiving the indication information, the UE may abandon the retry, that is, after receiving the indication, the UE does not perform interaction with the network within a preset time, or may only perform again after being triggered by other instructions or instructions. The interaction of the network sends an RRC Connection Request message to the RAN node device. In addition, after receiving the indication, the UE may initiate a retry again. There may be two ways to initiate the retry again: 1) Initiating a connection reestablishment process on the original RAN node, for example, the eNB, and sending the connection reestablishment process to the original RAN node device. RRC Connection Request message; 2) The UE may reselect a new RAN node device and send an RRC Connection Request message to the new RAN node device. Which retry method to choose depends on implementation considerations such as network planning, load, interference, and signal strength.

On the basis of the technical solution shown in FIG. 21, the third release module 174 may specifically include a third deletion unit 175 and/or a third release unit 176, where the third deletion unit 175 is configured to delete the RRC context and related to the UE. / or S 1 context; the third release unit 1 76 is used to release the allocation for the UE Resources.

In this embodiment, if the RAN node device cannot establish the S1 context and/or set the bearer, the CN node may be requested to release the UE-related information to prevent the CN node from re-issuing unnecessary attempting instructions, and the RAN node device may also Instructing the UE to release the RAN connection improves the processing efficiency of the RAN node device, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 23, a schematic structural diagram of a third embodiment of a CN node device according to the present invention may specifically include a third receiving module 177, a third determining module 178, a third sending module 179, and a fourth releasing module 171 0, where The third receiving module 177 is configured to receive an initial context setup failure message sent by the RAN node, receive a UE context release request message sent by the RAN node for requesting release of information related to the UE, and send the RAN node to send a UE context release command message. The UE Context Release Complete message is used. The third determining module 178 is configured to determine, according to the initial context setup failure message received by the third receiving module, that the RAN node cannot establish an S1 context and/or set a bearer for the UE. The E-RAB and/or the default bearer are included; the third sending module 179 is configured to return, to the RAN node, a UE context release command message for instructing the RAN node to release information related to the UE according to the determining result of the third determining module; The four release module 171 0 is configured to release the UE context according to the third receiving module Completion message, the release of information related to the UE.

In this embodiment, the third determining module 178 determines that the RAN node cannot establish the S1 context and/or the setup bearer according to the initial context setup failure message sent by the RAN node, and therefore, receives the third bearer module 177. After the RAN node sends a request for releasing information related to the UE, the third sending module 179 sends a UE context release command message to the RAN node to instruct the RAN node device to perform a release operation, to prevent the CN node device from re-issuing unnecessary attempting instructions, and improve the RAN. The processing efficiency of the nodes effectively improves system flexibility and system efficiency.

As shown in FIG. 24, it is a schematic structural diagram of a fourth embodiment of a CN node device according to the present invention. On the basis of the structure diagram shown in FIG. 23, the fourth release module 171 0 may specifically include a fourth deletion unit 171 1 and/or The fourth release unit 1712, wherein the fourth deletion unit 171 1 is configured to delete the S 1 context related to the UE; and the fourth release unit 1712 is configured to release the resource allocated for the UE. In this embodiment, the third determining module 178 determines that the RAN node cannot establish the S1 context and/or the setup bearer according to the initial context setup failure message sent by the RAN node, and therefore, receives the third bearer module 177. After the RAN node device sends a request for releasing information related to the UE, the third sending module 179 sends a UE context release command message to the RAN node to command the RAN node device to perform a release operation, and the fourth deleting unit 1711 deletes the S1 related to the UE. Context, the fourth release unit 1712 releases the resources allocated for the UE, thereby preventing the CN node device from re-issuing unnecessary attempt instructions, improving the processing efficiency of the RAN node, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 25, it is a schematic structural diagram of a fifth embodiment of a RAN node device according to the present invention, which may specifically include a fourth sending module 21 1 and a first selecting module 212, where the fourth sending module 21 1 is configured to send an initial to the CN node. Context establishment failure message; specifically, if the RAN node device cannot establish the S1 context and/or set the bearer for the UE, the fourth sending module 21 1 sends an initial context setup failure message to the CN node; The E-RAB and/or the default bearer; the first selecting module 212 is configured to select a new CN node for the UE after the fourth sending module 21 1 sends the initial context setup failure message.

In this embodiment, when the RAN node device cannot establish the S1 context for the UE and/or establish a setup bearer, the first selection module 212 may reselect a CN node, which increases the control capability and flexibility of the RAN node device. The scenario that the RAN node device always fails can be avoided, and the UE access success rate is improved, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 26, it is a schematic structural diagram of a sixth embodiment of a RAN node device according to the present invention. On the basis of the structure diagram shown in FIG. 25, the embodiment may further include a fourth receiving module 221, configured to receive a CN node for initial And the first selection module 222 is configured to select, according to the reselection indication information carried in the reselection indication message, the UE to select the reselection indication message that is sent by the re-selection indication information. New CN node. The fourth sending module 21 1 may also be configured to send an initial UE message to the new CN node, thereby requesting to establish an S1 connection with the new CN node. In this embodiment, when the RAN node device cannot establish the S1 context and/or set the bearer for the UE, the first selecting unit 222 may reselect a CN node under the guidance of the CN node, and increase the control capability of the RAN node device. And flexibility, can avoid the scenario where the RAN node device always fails, improve the UE access success rate, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 27, it is a schematic structural diagram of a fifth embodiment of a CN node device according to the present invention, which may specifically include a fifth receiving module 231, a second selecting module 232, and a fifth releasing module 233, wherein the fifth receiving module 231 is configured to receive An initial context setup failure message sent by the RAN node; the CN node device determines that the RAN node cannot establish an S1 context and/or sets a bearer for the UE according to the initial context setup failure message; wherein the set bearer includes the E-RAB and/or Or the default bearer; the second selecting module 232 is configured to select a new CN node according to the initial context setup failure message received by the fifth receiving module 231, and the fifth release module 233 is configured to receive the initial according to the fifth receiving module 231. A context establishment failure message releases information related to the UE.

In this embodiment, when the RAN node cannot establish an S1 context for the UE and/or set a bearer, the second selection module 232 may reselect a CN node, which increases the control capability and flexibility of the RAN node, and can avoid the RAN node. The scenario of always failing improves the access success rate of the UE, thereby effectively improving system flexibility and system efficiency.

As shown in FIG. 28, it is a schematic structural diagram of a sixth embodiment of a CN node device according to the present invention. On the basis of the structure diagram shown in FIG. 23, the initial context setup failure message includes reselection indication information. The second selection module 232 may specifically The second selection unit 241 is configured to select a new CN node for the UE according to the reselection indication information carried in the initial context setup failure message.

The embodiment may further include a fifth sending module 242, configured to send an initial UE message to the new CN node, so as to establish an S1 connection with the new CN node device.

In this embodiment, the fifth release module 233 may specifically include a fifth deletion unit 243 and/or a fifth release unit 244, where the fifth deletion unit 243 is configured to delete the S1 context related to the UE; Release the resources allocated for the UE.

In this embodiment, when the RAN node cannot establish an S1 context and/or set a bearer for the UE, The second selecting unit 241 can reselect a CN node under the guidance of the RAN node, which increases the control capability and flexibility of the RAN node, can avoid the scenario where the RAN node always fails, and improves the UE access success rate, thereby effectively improving the system. Flexibility and system efficiency.

First embodiment of a system for processing context in an evolved network

The embodiment of the invention further provides a system for processing a context in an evolved network, including a RAN node device and a CN node device.

The RAN node device sends a UE context release indication message to the CN node device for instructing the CN node device to release information related to the UE, releasing information related to the UE.

Specifically, when the RAN node device may release the RRC connection of the UE for network management and/or network adjustment/configuration/optimization or the UE is no longer active, or the RAN node device finds that the UE has lost contact, or the UE's air interface occurs. An unrecoverable error, or an RRC connection has been released/interrupted, the RAN node device may delete and/or release the context and/or resources associated with the UE as early as possible, and then notify or inform or inform or indicate to the CN node device.

The CN node device is configured to receive a UE context release indication message sent by the RAN node device to instruct the CN node device to release information related to the UE, and release information related to the UE according to the UE context release indication message.

Specifically, after receiving the UE context release indication message, the CN node device considers that the RAN node device has released the information about the UE, and does not need to instruct the RAN node device to perform the release operation, and the CN node device can perform related processing on the EPC side. . It should be noted that the UE context release indication message is not limited to a special message, and may also be used as a parameter in other messages, or may be a network management operation or the like.

In this embodiment, after receiving the UE context release indication message sent by the RAN node device, the CN node device releases the information about the UE, and does not need to instruct the RAN node device to perform the release operation, thereby enhancing the flexibility and flexibility of the RAN node device. And work efficiency, which effectively improves system flexibility and system efficiency.

System for processing context in an evolved network The difference from the previous embodiment is that, in the present embodiment, releasing UE-related information includes deleting an RRC context and/or an S 1 context related to the UE; and/or releasing resources allocated for the UE.

Third embodiment of a system for processing context in an evolved network

The RAN node device is configured to send an initial context setup failure message to the CN node device, and determine to request the CN node device to release information related to the UE, and send, according to the determination result, the CN node device to request release from the CN node device. The UE context release request message of the information about the UE is used to receive the UE context release command message sent by the CN node device according to the UE context release request message for instructing the RAN node device to release the UE-related information, and release the information about the UE.

The CN node device is configured to determine, according to the initial context setup failure message sent by the RAN node device, that the RAN node device cannot establish an S1 context and/or set a bearer for the UE, and receive information sent by the RAN node device for requesting release of the UE. a UE context release request message, according to the determination result, returning, to the RAN node device, a UE context release command message for releasing the UE-related information for instructing the RAN node device to be sent according to the received RAN node device for the UE context release command message. The UE context release complete message releases information related to the UE.

This embodiment increases the control capability and flexibility of the RAN node device, avoids the scenario where the RAN node device always fails, and improves the UE access success rate, thereby effectively improving system flexibility and system efficiency.

System for processing context in an evolved network Fourth Embodiment

The difference from the previous embodiment is that, in this embodiment, releasing information related to the UE includes deleting an RRC context and/or an S 1 context associated with the UE; and/or releasing resources allocated for the UE.

Fifth Embodiment of System for Processing Context in Evolved Network

The embodiment further provides a system for processing a context in an evolved network, including a RAN node device and a CN node device.

The RAN node device is configured to send an initial context setup failure message to the CN node device, that is, the UE Select a new CN node;

The CN node device is configured to receive an initial context setup failure message sent by the RAN node, select a new CN node according to the initial context establishment failure message, and release information related to the UE.

Sixth Embodiment of a System for Processing Context in an Evolved Network

It should be noted that all of the above retry or reselection processes can be cycled back and forth until successful, or some limit number and/or time is reached. The number and/or time of retrying or reselection can be a standard specification value or dependent on the specific implementation of each device. In addition, if the retry is successful on the new node, the UE-related information on the original node needs to be deleted. This deletion may be the original node deleting itself locally, or may be an indication at another node or UE. Or delete it under request or command.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. Modifications or equivalents are made without departing from the spirit and scope of the invention.

Claims

Rights request

A method for processing a context in an evolved network, comprising:

Transmitting, to the core network node, a user equipment context release indication message for instructing the core network node to release information related to the user equipment;

Release information about the user device.

The method according to claim 1, wherein the sending, to the core network node, the user equipment context release indication message for instructing the core network node to release information related to the user equipment, further includes:

An initial context setup failure message is sent to the core network node and it is determined to release information related to the user equipment.

The method according to claim 2, wherein the determining, after releasing the information related to the user equipment, the method further comprises:

Sending, to the user equipment, a radio resource control connection release message for instructing the user equipment to release the radio resource control connection, where the radio resource control connection release message includes indication information indicating that the user equipment performs a preset operation.

The method according to claim 3, wherein the indication information indicating that the user equipment performs a preset operation comprises:

Instructing the user equipment to establish a radio resource control connection with the radio access network node; or

Instructing the user equipment to establish a radio resource control connection with the new radio access network node; or

Instructing the user equipment to establish a radio resource control connection with the wireless access network node after a preset time and/or triggered by a preset instruction; or

Instructing the user equipment to instruct the radio access network node to select indication information for a new core network node.

A method for processing a context in an evolved network, the method comprising: Receiving, by the radio access network node, a user equipment context release indication message for instructing the core network node to release information related to the user equipment;

And releasing information related to the user equipment according to the user equipment context release indication message.

6. A method for processing a context in an evolved network, the method comprising:

Sending an initial context setup failure message to the core network node, and determining to request the core network node to release information related to the user equipment;

The method according to claim 6, wherein the receiving, by the core network node, according to the user equipment context release request message, is used to command the radio access network node to release information related to the user equipment. After the user equipment context release command message, the method further includes: sending, to the user equipment, a radio resource control connection release message for instructing the user equipment to release the radio resource control connection, where the radio resource control connection release message includes indicating the user The device performs instructions for the preset operation.

The method according to claim 7, wherein the indication information indicating that the user equipment performs a preset operation comprises:

Instructing the user equipment to instruct the radio access network node to select a new core network node Instructions.

9. A method for processing a context in an evolved network, the method comprising:

Determining, according to the initial context setup failure message sent by the radio access network node, that the radio access network node cannot establish an S1 context and/or a setup bearer for the user equipment;

A method for processing a context in an evolved network, comprising:

Sending an initial context setup failure message to the core network node;

Select a new core network node for the user device.

The method of claim 10, after the sending the initial context setup failure message to the core network node, the method further includes:

Receiving a reselection indication message carrying the reselection indication information sent by the core network node for the initial context setup failure message;

The selecting a new core network node for the user equipment includes: selecting a new core network node for the user equipment according to the reselection indication information carried in the reselection indication message.

12. A method for processing a context in an evolved network, the method comprising:

Receiving an initial context setup failure message sent by the radio access network node;

The method according to claim 12, wherein the initial context establishment failure message includes reselection indication information;

The selecting a new core network node for the user equipment includes: establishing according to the initial context The reselection indication information carried in the failure message selects a new core network node for the user equipment.

A radio access network node device, comprising:

The radio access network node device according to claim 14, wherein the first sending module is further configured to send an initial context setup failure message to the core network node; Also includes:

a first determining module, configured to: if the wireless access network node cannot establish an S1 context and/or set a bearer for the user equipment, determine to release information related to the user equipment;

The first release module is further configured to release information related to the user equipment according to the determination result of the first determining module.

The radio access network node device according to claim 14, wherein the first sending module is further configured to send, to the user equipment, a radio resource for instructing the user equipment to release a radio resource control connection. Controlling the connection release message, the radio resource control connection release message includes indication information indicating that the user equipment performs a preset operation.

17. A core network node device, comprising:

18. A radio access network node device, comprising:

a second sending module, configured to send an initial context setup failure message to the core network node, where the second determining module is configured to determine to request the core network node to release information related to the user equipment, and instruct the second sending module to The core network node sends a user equipment context release request message for requesting the core network node to release information related to the user equipment; a second receiving module, configured to receive, by the core network node, a user equipment context release command message for instructing the radio access network node device to release information related to the user equipment, according to the user equipment context release request message;

The radio access network node device according to claim 18, wherein the second sending module is further configured to send, to the user equipment, a radio resource, used to instruct the user equipment to release a radio resource control connection. Controlling the connection release message, the radio resource control connection release message includes indication information indicating that the user equipment performs a preset operation.

20. A core network node device, comprising:

A radio access network node device, comprising:

11. The radio access network node device according to claim 21, further comprising Includes:

a fourth receiving module, configured to receive, by the core network node, a reselection indication message that carries reselection indication information that is sent by the initial context establishment failure message;

The first selection module includes a first selection subunit, configured to select a new core network node for the user equipment according to the reselection indication information carried in the reselection indication message.

A core network node device, comprising:

a fifth receiving module, configured to receive an initial context setup failure message sent by the radio access network node;

a second selection module, configured to select a new core network node for the user equipment according to the initial context establishment failure message received by the fifth receiving module;

The core network node device according to claim 23, wherein the initial context establishment failure message includes reselection indication information;

The second selection module includes a second selection subunit, configured to select a new core network node for the user equipment according to the reselection indication information carried in the initial context establishment failure message.

25. A system for processing context in an evolved network, comprising: a radio access network node device and a core network node device;

The wireless access network node device is configured to send, to the core network node device, a user equipment context release indication message for instructing the core network node device to release information related to the user equipment, and release information related to the user equipment;

The core network node device is configured to receive a user equipment context release indication message that is sent by the radio access network node device to indicate that the core network node device releases information related to the user equipment, and is released according to the user equipment context Indicates a message that releases information about the user device.

26. A system for processing context in an evolved network, characterized by comprising a radio access network Network node device and core network node device;

The radio access network node device is configured to send an initial context setup failure message to the core network node device, and determine to request the core network node device to release information related to the user equipment, according to the determination result, to the core The network node device sends a user equipment context release request message for requesting the core network node device to release information related to the user equipment, and receives a command for sending, by the core network node device, according to the user equipment context release request message Deactivating, by the radio access network node device, a user equipment context release command message of information related to the user equipment, releasing information related to the user equipment;

The core network node device is configured to determine, according to the initial context setup failure message sent by the radio access network node device, that the radio access network node device cannot be established for the user equipment.

Receiving, by the S1 context and/or setting bearer, a user equipment context release request message sent by the radio access network node device for requesting release of information related to the user equipment, according to the determination result, to the radio access network The node device returns a user equipment context release command message for instructing the radio access network node to release information related to the user equipment, according to the user equipment sent by the radio access network node device for the user equipment context release command message A context release completion message, releasing information related to the user equipment.

27. A system for processing context in an evolved network, comprising: a radio access network node device and a core network node device;

The radio access network node device is configured to send an initial context setup failure message to the core network node device, and select a new core network node for the user equipment;

The core network node device is configured to receive an initial context setup failure message sent by the radio access network node device, select a new core network node for the user equipment according to the initial context setup failure message, and release the user equipment Information.