CN107426720A - A kind of context transfer method of cross-node movement, UE, network node - Google Patents

A kind of context transfer method of cross-node movement, UE, network node Download PDF

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Publication number
CN107426720A
CN107426720A CN201610343907.7A CN201610343907A CN107426720A CN 107426720 A CN107426720 A CN 107426720A CN 201610343907 A CN201610343907 A CN 201610343907A CN 107426720 A CN107426720 A CN 107426720A
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China
Prior art keywords
node
destination node
information
contextual information
message
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Granted
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CN201610343907.7A
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Chinese (zh)
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CN107426720B (en
Inventor
史莉荣
贺美芳
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Shanghai Zhongxing Software Co Ltd
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Shanghai Zhongxing Software Co Ltd
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Priority to CN201610343907.7A priority Critical patent/CN107426720B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

The embodiment of the invention discloses a kind of context transfer method of cross-node movement, user equipment, network node, methods described includes：When user equipment (UE) in business unactivated state is moved to destination node, the information of destination node is known by system message；The UE sends mobile triggering message to destination node, so that the destination node carries out the acquisition of contextual information；After the UE receives the confirmation message that the destination node is sent, the renewal of access node is carried out.

Description

A kind of context transfer method of cross-node movement, UE, network node
Technical field
The present invention relates to the contextual information acquiring technology of cross-node, more particularly to a kind of movement of cross-node is upper Lower message transmitting method, UE, network node.
Background technology
Internet of things service is still deployed on conventional mobile network mostly, power consumption, connection number limitation, cost etc. because Element constrains the growth rate of its business.In current Long Term Evolution (LTE, Long Term Evolution) In system, by being then based on S1/EPS frameworks, in order that UE can receive and send user face data, need Connection is established and removed, is transmitted for small data packets, can eat dishes without rice or wine substantial amounts of signaling traffic load be present with S1 mouths.
Recent years, operator attempted to provide inexpensive, low-power consumption Internet of Things connection by improving existing network Connect.Internet of Things (NB-IOT, Narrow Band Internet Of in arrowband are introduced in R13 versions at present Things) function, being exactly for one of technology of most critical in NB-IOT functions will when no data transmits Radio Resource connection suspension, is recovered again when there is data transfer, is so changed compared to terminal from Idle state It can reduce Signalling exchange to connected state.
Because the suspension flow in current NB-IOT functions is to discharge what all S1 were carried, this just anticipates Taste returns to connected state, it is also necessary to spends certain core net (CN, Core Network) side signaling to recover S1 is carried, and this is for the small packet of Burst Period, or very big signaling load overhead be present.
For the enhancing mobile broadband (EMBB, Enhanced Mobile Boradband) of enhancing, in 5G In propose for never receive data such as Idle state go to receive data connected state connection foundation be no more than 10ms, analyze the time loss that each stage is established in connection at present, the time of the acquisition consumption of UE contexts The proportion accounted for is larger, meanwhile, for EMBB, there is also multiple short or long bursty data, centre Latent period is elongated this application, and therefore, EMBB and internet of things service are required for being different from present A kind of new state of Idle state and connected state, and all there is mobility demand.
Then a kind of new state, referred to as business unactivated state are proposed in the tissue of research future communications development. The node that the characteristics of business unactivated state is to be responsible for carrying out context management preserves related contextual information, When there is data transfer, the recovery carried according to the related context information of preservation, to carry out data biography It is defeated, while the terminal UE of the state has mobility.The UE of business unactivated state is transferred to multiple negative Moved between the node of duty context management, when there is business transmission, it is necessary to be recovered, recover to need Contextual information related UE, will be from CN to wireless access network (RAN, Radio Access Network) To UE passage continue on.Because UE is moved to the range of management of new context management node, and New node is because without related contextual information, then can not just be recovered, data can not be supported to pass It is defeated.
Business unactivated state is in when being moved between stepping up hereafter management node for UE at present, context The transmission of information is also without the method determined.
The content of the invention
In order to solve the above technical problems, the embodiments of the invention provide a kind of context transfer of cross-node movement Method, UE, network node.
The context transfer method of cross-node movement provided in an embodiment of the present invention, in business unactivated state User equipment (UE) when being moved to destination node, mobile triggering message is sent to destination node, so that described Destination node carries out the acquisition of contextual information.
In the embodiment of the present invention, the UE knows the information of destination node by system message.
In the embodiment of the present invention, after the UE receives the confirmation message that the destination node is sent, connect The renewal of ingress.
In the embodiment of the present invention, the UE sends mobile triggering message to destination node, including：
When the UE determines that the source node of the destination node and the UE does not have syntople, to institute State destination node and send mobile triggering message.
In the embodiment of the present invention, the mobile triggering message includes：Source node identification；Or
Source node identification and the UE are moved to the previous nodal information of the destination node；Or
Source node identification and the UE pass through the information list of node.
In the embodiment of the present invention, the system message includes one of at least following information of destination node：Section Point identification, adjacent node list.
In the embodiment of the present invention, the contextual information comprises at least one of following information：The UE's is upper The contextual information of carrying between context information, wireless access network RAN and core net.
A kind of context transfer method of cross-node movement, methods described include：
After destination node receives the mobile triggering message of user equipment (UE), based on the mobile triggering message In the nodal information that includes obtain the contextual information related to the UE.
In the embodiment of the present invention, the node sends confirmation message to the UE, is entered with triggering the UE The renewal of row node.
It is described based on the nodal information acquisition included in the mobile triggering message and institute in the embodiment of the present invention The related contextual informations of UE are stated, including：
The destination node obtains the UE included in the mobile triggering message and is moved to the target section The information of intermediate node before point, the request message of contextual information is sent to the intermediate node；It is described to ask Ask and source node identification is included in message；
Receive the contextual information related to the UE that the intermediate node obtains from source node.
In the embodiment of the present invention, after the contextual information related to the UE that the destination node obtains, Methods described also includes：
After the source node sends the contextual information related to the UE, delete local with the UE Related contextual information；
Or after the source node sends the contextual information related to the UE, after reaching setting duration Delete the local contextual information related to the UE.
In the embodiment of the present invention, the contextual information related to the UE comprise at least following information it One：
The context of carrying between the contextual information of the UE, wireless access network RAN and core net is believed Breath.
A kind of user equipment, the user equipment are in business unactivated state, and the user equipment includes： Transmitting element, for when the user equipment is moved to destination node, mobile triggering to be sent to destination node Message, so that the destination node carries out the acquisition of contextual information.
In the embodiment of the present invention, the user equipment also includes：
Unit is known, for knowing the information of destination node by system message.
In the embodiment of the present invention, the user equipment also includes：
Updating block, after the confirmation message sent for receiving the destination node, carry out access node more Newly.
In the embodiment of the present invention, the user equipment also includes：
Determining unit, for determining that the source node of destination node and the UE described in the UE whether there is Syntople, when the source node of the destination node and the UE does not have syntople, described in triggering Transmitting element sends mobile triggering message to the destination node.
In the embodiment of the present invention, the mobile triggering message includes：Source node identification；Or
Source node identification and the UE are moved to the previous nodal information of the destination node；Or
Source node identification and the UE pass through the information list of node.
In the embodiment of the present invention, the system message includes one of at least following information of destination node：Section Point identification, adjacent node list.
In the embodiment of the present invention, the contextual information comprises at least one of following information：The UE's is upper The contextual information of carrying between context information, wireless access network RAN and core net.
A kind of network node, the network node include：Receiving unit, acquiring unit, wherein：
Receiving unit, for receiving the mobile triggering message of user equipment (UE)；
Acquiring unit, for being obtained and the UE based on the nodal information included in the mobile triggering message Related contextual information.
In the embodiment of the present invention, the network node also includes：
Transmitting element, for sending confirmation message to the UE, node is carried out more to trigger the UE Newly.
In the embodiment of the present invention, the acquiring unit includes：Obtain subelement, transmission sub-unit and receive son Unit, wherein：
Subelement is obtained, the mesh is moved to for obtaining the UE included in the mobile triggering message Mark the information of the intermediate node before node；
Transmission sub-unit, for sending the request message of contextual information to the intermediate node；The request Source node identification is included in message；
Receiving subelement is related to the UE for receive that the intermediate node obtains from source node Context information.
In the embodiment of the present invention, the contextual information related to the UE comprise at least following information it One：
The context of carrying between the contextual information of the UE, wireless access network RAN and core net is believed Breath.
The context transfer method of the cross-node movement of the embodiment of the present invention, UE, network node, in business When the UE of unactivated state is moved to destination node, the information of destination node is known by system message, from And mobile triggering message is sent to destination node, destination node is based on mobile triggering message and obtained and the UE Related contextual information, and send confirmation message to the UE；The UE receives the destination node After the confirmation message of transmission, destination node is linked into.By the technical scheme of the embodiment of the present invention, can keep away The related context letters of UE can not be obtained by exempting from the node of the UE accesses when UE steps up hereafter management node movement The defects of breath, also, due to including the information of interdependent node in related news, can accurately carry out context The transmission of information, unnecessary interacting message is effectively reduced, greatly reduce system loading, also can Meet the mobility demand of the UE in business unactivated state.
Brief description of the drawings
Fig. 1 is the flow chart for the context transfer method that the cross-node of the embodiment of the present invention one moves；
Fig. 2 is the flow chart for the context transfer method that the cross-node of the embodiment of the present invention two moves；
Fig. 3 is mobile flow between the UE cross-nodes in business unactivated state according to the embodiment of the present invention Figure；
Fig. 4 is the flow chart of progress context transfer between the node according to the embodiment of the present invention；
Fig. 5 is the composition structural representation of the user equipment of the embodiment of the present invention；
Fig. 6 is the composition structural representation of the network node of the embodiment of the present invention.
Embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings Realization to the embodiment of the present invention is described in detail, and appended accompanying drawing purposes of discussion only for reference, is not used for Limit the embodiment of the present invention.
The flow chart for the context transfer method that Fig. 1 moves for the cross-node of the embodiment of the present invention one, such as Fig. 1 Shown, the context transfer method of the cross-node movement of the embodiment of the present invention includes following processing step：
Step 101, when UE is moved to destination node, the information of destination node is known by system message.
In the embodiment of the present invention, UE is the UE in business unactivated state.The system message includes One of at least following information of destination node：Node identification, adjacent node list.
Step 102, UE sends mobile triggering message to destination node, so that the destination node is carried out up and down The acquisition of literary information.
In the embodiment of the present invention, the mobile triggering message includes：Source node identification；Or
Source node identification and the UE are moved to the previous nodal information of the destination node；Or
Source node identification and the UE pass through the information list of node.
The purpose that UE sends mobile triggering message to destination node is the source that triggering destination node accesses to UE Node obtains contextual information.
The contextual information comprises at least one of following information：The contextual information of the UE, wirelessly connect The contextual information of carrying between networking RAN and core net.
Specifically, when the UE in business unactivated state is moved to destination node, disappeared by reading system Breath knows the information of destination node, and whether decision-making sends movement to destination node and trigger message.If it is determined that Syntople is not present between the source node that destination node and UE are accessed before, then sends and moves to destination node Dynamic triggering message, otherwise mobile triggering message is not sent to destination node.
Destination node obtains the related contextual informations of UE by source node, and sends confirmation message to UE, So that UE carries out source node renewal.
Step 103, after UE receives the confirmation message that the destination node is sent, the renewal of access node is carried out.
In the embodiment of the present invention, after UE receives the confirmation message that the destination node is sent, i.e., saved from source Point is switched in destination node.
In the embodiment of the present invention, source node and destination node are all responsible for the node of context information management.Source For UE, source node is the node for preserving UE contextual informations for node and destination node, and Destination node is the home node that UE is moved to the destination node range of management.
The flow chart for the context transfer method that Fig. 2 moves for the cross-node of the embodiment of the present invention two, such as Fig. 2 Shown, the context transfer method of the cross-node movement of the embodiment of the present invention includes following processing step：
Step 201, after destination node receives the mobile triggering message of UE transmissions, based on the mobile triggering The nodal information included in message obtains the contextual information related to the UE.
In the embodiment of the present invention, UE is the UE in business unactivated state.
The mobile triggering message includes：Source node identification；Or
Source node identification and the UE are moved to the previous nodal information of the destination node；Or
Source node identification and the UE pass through the information list of node.
The purpose that UE sends mobile triggering message to destination node is the source that triggering destination node accesses to UE Node obtains contextual information.
The contextual information related to UE comprises at least one of following information：The contextual information of the UE, The contextual information of carrying between wireless access network RAN and core net.
Specifically, when the UE in business unactivated state is moved to destination node, disappeared by reading system Breath knows the information of destination node, and whether decision-making sends movement to destination node and trigger message.If it is determined that Syntople is not present between the source node that destination node and UE are accessed before, then sends and moves to destination node Dynamic triggering message, otherwise mobile triggering message is not sent to destination node.
Step 202, destination node sends confirmation message to UE, to trigger the renewal that the UE carries out node.
Destination node obtains the related contextual informations of UE by source node, and sends confirmation message to UE, So that UE carries out source node renewal.Specifically, destination node obtains what is included in the mobile triggering message The information for the intermediate node that the UE is moved to before the destination node, sent up and down to the intermediate node The request message of literary information；Source node identification is included in the request message；The intermediate node is received from source The contextual information related to the UE that node obtains.
After the source node sends the contextual information related to the UE, delete local with the UE Related contextual information；Or after the source node sends the contextual information related to the UE, The local contextual information related to the UE is deleted after reaching setting duration.
Below by way of specific example, the skill of the context transfer method moved to the cross-node of the embodiment of the present invention The essence of art scheme is further elaborated.
Fig. 3 is mobile flow between the UE cross-nodes in business unactivated state according to the embodiment of the present invention Figure, as shown in figure 3, mobile flow comprises the following steps between the UE cross-nodes in business unactivated state：
S302, UE are moved to the range of management of destination node, and system message is received by destination node, UE knows destination node information by nodal information in system message etc., and destination node information includes target section Point identification, adjacent node information.
S304, UE decide whether to need to send mobile triggering message to destination node, if destination node and Source node does not have syntople, then needs to send mobile triggering message to destination node；
S306, UE send mobile triggering message to destination node, and source node is included in movement triggering message Information (such as source node identification), alternatively, it is also previous comprising the destination node is moved in mobile triggering message Secondary nodal information or the information list of the node of process；
S308, destination node obtain contextual information by the source node accessed before UE.
S310, destination node send confirmation message to UE.
S312, UE carry out the renewal of source node, and destination node is updated to new nodal information.
Fig. 3 is the flow of progress context transfer between the node according to the embodiment of the present invention.
S302, destination node gets UE into the information of the node before own node, to this intermediate node Context information request is sent, source node identification and UE information (such as UE marks) are included in request message；
Context request message is sent to source node by S304, intermediate node；
Contextual information is sent to centre by S306, source node by UE identification search to contextual information Node；
Contextual information is transmitted to destination node by S308, intermediate node.
S310, after destination node gets the related contextual informations of UE by intermediate node, sent out to UE Send confirmation message.
S312, UE receive destination node transmission confirmation message after, carry out the renewal of source node, i.e., from Source node is switched to destination node.
Fig. 4 is the flow chart of progress context transfer between the node according to the embodiment of the present invention, as shown in Figure 4.
S402, after destination node receives the mobile triggering message of UE transmissions, triggered by mobile in message Node listing information that the source node identification or UE of carrying pass through etc. sends contextual information to intermediate node Request message.The relevant information such as source node identification and UE identification information is carried in request message.
S404, request message of the intermediate node to source node forwarding contexts information.
S406, source node receive context request message, are believed context by context information response message Cease and sent to intermediate node；
Context information response message is transmitted to destination node by S406, intermediate node.
Source node is deleted the related contextual informations of the UE.If there is it in source node with core net Preceding carrying, is also deleted.Specifically, the source node sends the context letter related to the UE After breath, the local contextual information related to the UE is directly deleted；Or the source node is sent After the contextual information related to the UE, reach delete again after setting duration it is local with the UE phases The contextual information of pass.
Fig. 5 is the composition structural representation of the user equipment of the embodiment of the present invention, as shown in figure 5, of the invention The user equipment of embodiment is in business unactivated state, and the user equipment includes：
Transmitting element 51, for when the user equipment is moved to destination node, sending and moving to destination node Dynamic triggering message, so that the destination node carries out the acquisition of contextual information；
The user equipment also includes：
Unit 50 is known, for knowing the information of destination node by system message.
The user equipment also includes：
Receiving unit 52, the confirmation message sent for receiving the destination node, triggers the updating block；
Updating block 53, for carrying out the renewal of access node.
On the basis of user equipment shown in Fig. 5, the user equipment of the embodiment of the present invention can also include：
Determining unit (not shown in Fig. 5), for determining destination node described in the UE and the UE's Source node whether there is syntople, adjacent close be present in the destination node and the UE source node When being, trigger the transmitting element and send mobile triggering message to the destination node.
In the embodiment of the present invention, the mobile triggering message includes：Source node identification；Or
Source node identification and the UE are moved to the previous nodal information of the destination node；Or
Source node identification and the UE pass through the information list of node.
In the embodiment of the present invention, the system message includes one of at least following information of destination node：Section Point identification, adjacent node list.
In the embodiment of the present invention, the contextual information comprises at least one of following information：The UE's is upper The contextual information of carrying between context information, wireless access network RAN and core net.
It will be appreciated by those skilled in the art that each unit in user equipment shown in Fig. 5 realizes that function can Understand with reference to the associated description of each embodiment for the context transfer method that foregoing cross-node moves.Receive single Member and transmitting element can be realized by corresponding antenna system.Know that unit and updating block etc. can be by micro- Processor, large-scale programmable array FPGA or corresponding chips are formed.
Fig. 6 is the composition structural representation of the network node of the embodiment of the present invention, as shown in fig. 6, of the invention The network node of embodiment includes：Receiving unit 60, acquiring unit 61 and transmitting element 62, wherein：
Receiving unit 60, for receiving the mobile triggering message of user equipment (UE)；
Acquiring unit 61, for obtained based on the nodal information included in the mobile triggering message with it is described Contextual information related UE；
Transmitting element 62, for sending confirmation message to the UE, node is carried out to trigger the UE Renewal.
In the embodiment of the present invention, the acquiring unit 61 includes：Acquisition subelement (not shown in Fig. 6), Transmission sub-unit (not shown in Fig. 6) and receiving subelement (not shown in Fig. 6), wherein：
Subelement is obtained, the mesh is moved to for obtaining the UE included in the mobile triggering message Mark the information of the intermediate node before node；
Transmission sub-unit, for sending the request message of contextual information to the intermediate node；The request Source node identification is included in message；
Receiving subelement is related to the UE for receive that the intermediate node obtains from source node Context information.
In the embodiment of the present invention, the contextual information related to the UE comprise at least following information it One：
The context of carrying between the contextual information of the UE, wireless access network RAN and core net is believed Breath.
On the basis of the network node shown in Fig. 6, the network node of the embodiment of the present invention can also include deleting Except unit, for after the contextual information related to the UE is sent to other network nodes, deleting this The contextual information related to the UE on ground；Or sending the context letter related to the UE After breath, the local contextual information related to the UE is deleted after reaching setting duration.
It will be appreciated by those skilled in the art that each unit in network node shown in Fig. 6 realizes that function can Understand with reference to the associated description of each embodiment for the context transfer method that foregoing cross-node moves.Receive single Member and transmitting element can be realized by corresponding antenna system.Acquiring unit can be by microprocessor, large-scale Programmable array FPGA or corresponding chips are formed.
, can be in any combination in the case where not conflicting between technical scheme described in the embodiment of the present invention.
In several embodiments provided by the present invention, it should be understood that disclosed method and intelligent UE, It can realize by another way.UE embodiments described above are only schematical, for example, The division of the unit, only a kind of division of logic function, can there is other division side when actually realizing Formula, such as：Multiple units or component can combine, or be desirably integrated into another system, or some features can To ignore, or do not perform.In addition, the coupling or straight that shown or discussed each part is mutual Connect coupling or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of UE or unit, Can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be it is physically separate, as The part that unit is shown can be or may not be physical location, you can positioned at a place, also may be used To be distributed on multiple NEs；Partly or entirely unit therein can be selected according to the actual needs Realize the purpose of this embodiment scheme.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a second processing list In member or each unit is individually as a unit, can also two or more unit collection Into in a unit；Above-mentioned integrated unit can both be realized in the form of hardware, can also use hard Part adds the form of SFU software functional unit to realize.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to This, any one skilled in the art the invention discloses technical scope in, can readily occur in Change or replacement, it should all be included within the scope of the present invention.

Claims (23)

  1. A kind of 1. context transfer method of cross-node movement, it is characterised in that methods described includes：
    When user equipment (UE) in business unactivated state is moved to destination node, sent to destination node Mobile triggering message, so that the destination node carries out the acquisition of contextual information.
  2. 2. context transfer method according to claim 1, it is characterised in that the UE, which passes through, is System message knows the information of destination node.
  3. 3. context transfer method according to claim 1, it is characterised in that the UE receives institute After the confirmation message for stating destination node transmission, the renewal of access node is carried out.
  4. 4. the context transfer method of cross-node movement according to claim 1, it is characterised in that institute State UE and send mobile triggering message to destination node, including：
    When the UE determines that the source node of the destination node and the UE does not have syntople, to institute State destination node and send mobile triggering message.
  5. 5. the context transfer method of cross-node movement according to claim 4, it is characterised in that institute Stating mobile triggering message includes：Source node identification；Or
    Source node identification and the UE are moved to the previous nodal information of the destination node；Or
    Source node identification and the UE pass through the information list of node.
  6. 6. the context transfer method of cross-node movement according to claim 2, it is characterised in that institute Stating system message includes one of at least following information of destination node：Node identification, adjacent node list.
  7. 7. the context transfer method of cross-node movement according to claim 1, it is characterised in that institute Contextual information is stated including at least one of following information：Contextual information, the wireless access network RAN of the UE The contextual information of carrying between core net.
  8. A kind of 8. context transfer method of cross-node movement, it is characterised in that methods described includes：
    After destination node receives the mobile triggering message that user equipment (UE) is sent, disappeared based on the mobile triggering The nodal information included in breath obtains the contextual information related to the UE.
  9. 9. context transfer method according to claim 8, it is characterised in that the node is to described UE sends confirmation message, to trigger the renewal that the UE carries out node.
  10. 10. the context transfer method of cross-node movement according to claim 8, it is characterised in that It is described that the context letter related to the UE is obtained based on the nodal information included in the mobile triggering message Breath, including：
    The destination node obtains the UE included in the mobile triggering message and is moved to the target section The information of intermediate node before point, the request message of contextual information is sent to the intermediate node；It is described to ask Ask and source node identification is included in message；
    Receive the contextual information related to the UE that the intermediate node obtains from source node.
  11. 11. the context transfer method of the cross-node movement according to any one of claim 8 to 9, its It is characterised by, after the contextual information related to the UE that the destination node obtains, methods described is also Including：
    After the source node sends the contextual information related to the UE, delete local with the UE Related contextual information；
    Or after the source node sends the contextual information related to the UE, after reaching setting duration Delete the local contextual information related to the UE.
  12. 12. the context transfer method of the cross-node movement according to any one of claim 8 to 9, its It is characterised by, the contextual information related to the UE comprises at least one of following information：
    The context of carrying between the contextual information of the UE, wireless access network RAN and core net is believed Breath.
  13. 13. a kind of user equipment, the user equipment is in business unactivated state, it is characterised in that institute Stating user equipment includes：
    Transmitting element, for when the user equipment is moved to destination node, sending and moving to destination node Message is triggered, so that the destination node carries out the acquisition of contextual information.
  14. 14. user equipment according to claim 13, it is characterised in that the user equipment also includes：
    Unit is known, for knowing the information of destination node by system message.
  15. 15. user equipment according to claim 13, it is characterised in that the user equipment also includes：
    Updating block, after the confirmation message sent for receiving the destination node, carry out access node more Newly.
  16. 16. user equipment according to claim 13, it is characterised in that the user equipment also includes：
    Determining unit, for determining that the source node of destination node and the UE described in the UE whether there is Syntople, when the source node of the destination node and the UE does not have syntople, described in triggering Transmitting element sends mobile triggering message to the destination node.
  17. 17. user equipment according to claim 16, it is characterised in that in the mobile triggering message Including：Source node identification；Or
    Source node identification and the UE are moved to the previous nodal information of the destination node；Or
    Source node identification and the UE pass through the information list of node.
  18. 18. user equipment according to claim 14, it is characterised in that the system message includes One of at least following information of destination node：Node identification, adjacent node list.
  19. 19. user equipment according to claim 13, it is characterised in that the contextual information is at least Including one of following information：Between the contextual information of the UE, wireless access network RAN and core net The contextual information of carrying.
  20. 20. a kind of network node, it is characterised in that the network node includes：Receiving unit, obtain list Member, wherein：
    Receiving unit, for receiving the mobile triggering message of user equipment (UE)；
    Acquiring unit, for being obtained and the UE based on the nodal information included in the mobile triggering message Related contextual information.
  21. 21. network node according to claim 20, it is characterised in that the network node also includes：
    Transmitting element, for sending confirmation message to the UE, node is carried out more to trigger the UE Newly.
  22. 22. network node according to claim 21, it is characterised in that the acquiring unit includes： Subelement, transmission sub-unit and receiving subelement are obtained, wherein：
    Subelement is obtained, the mesh is moved to for obtaining the UE included in the mobile triggering message Mark the information of the intermediate node before node；
    Transmission sub-unit, for sending the request message of contextual information to the intermediate node；The request Source node identification is included in message；
    Receiving subelement is related to the UE for receive that the intermediate node obtains from source node Context information.
  23. 23. according to the network node described in any one of claim 20 to 22, it is characterised in that it is described with The contextual information related UE comprises at least one of following information：
    The context of carrying between the contextual information of the UE, wireless access network RAN and core net is believed Breath.
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