CN104853392B

CN104853392B - A kind of motion management method and device of terminal

Info

Publication number: CN104853392B
Application number: CN201510155569.XA
Authority: CN
Inventors: 张云飞; 郑倩; 雷艺学
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2015-04-02
Filing date: 2015-04-02
Publication date: 2018-09-07
Anticipated expiration: 2035-04-02
Also published as: CN104853392A; WO2016155114A1

Abstract

The invention discloses a kind of motion management method of terminal and devices.The present invention by each T SC by constituting an IP subnet, the terminal that T SC are converged becomes the internal node of the subnet, then the status information of all T SC subnets is collected by SDN servers, mobile management is done based on global state information, movement between across the T SC of terminal no longer needs to remain to the control signaling connection of network side, and local mobile is controlled by supporting IP mobility management protocols by SDN servers, so as to support the mobile management of great amount of terminals user and mitigate network side signaling traffic load, reach and supports future 5G flexible controllable super-intensive networking purpose.

Description

A kind of motion management method and device of terminal

Technical field

The present invention relates to field of communication technology more particularly to the motion management methods and device of a kind of terminal.

Background technology

With the widespread adoption of long term evolution (Long Term Evolution, LTE) technology, traditional macrocell (Macrocell) encounter the bottleneck of networking and covering, the hot spot and blind spot of network there is an urgent need for flexible deployment scheme come it is perfect.Fortune Battalion quotient using macrocell cover and meanwhile dispose cell (Small Cell) come realize network depth cover and capacity boost, from And support following 5th third-generation mobile communication technology (Fifth-Generation, 5G) super-intensive networking.Such as Fig. 1, three classes are given The network architecture schematic diagram of Small Cell schemes.First kind Small Cell schemes include Cellular Networks (Femtocell), Picocell etc., this kind of scheme need based on wired backhaul (backhaul) and need to safeguard cell to core net side S1, S5 interface are linked into core net with this framework, are only applicable to deploy the region of these cells, not for the network coverage It is good so that it cannot provide wireless coverage or the region of backhaul can not be provided, cannot achieve rapid deployment or need to hold in short term The scene (such as public safety) promoted is measured, therefore its flexibility ratio is limited.Second class scheme includes portable broadband wireless dress (MiFi) router scheme is set, although this kind of scheme is to be based on wireless backhaul, but terminal access MiFi is operated in WLAN Unauthorized frequency range is easy disturbed so that service quality (Quality of Service, QoS) is difficult to be guaranteed.Therefore, The industry third class scheme that begins one's study provides Small Cell access, i.e. terminated cell (Terminal based on terminal Small Cell, T-SC).Terminal is using the realizations such as D2D technologies, Relay technologies access T-SC terminals and based on T-SC terminals Wireless backhaul makes T-SC become because T-SC terminals can provide access and wireless backhaul based on LTE authorized spectrum bands Controllable Small Cell access schemes the most flexible.

In existing 3GPP standard techniques, the mobility of Small Cell can pass through mobility management entity (Mobility Management Equipment, MME) control directly switched using X2, without being switched by S1.Small Cell are usual Belong to specific closed user group (CSG), only those terminals with corresponding CSG ID just allow to access corresponding Small The information and CSG log-on datas that Cell, MME are reported based on terminal are come processing terminal access or switching control.It is this to be controlled based on MME If the access of system and switching flow are directly multiplexed into the mobile management of T-SC schemes, there is problems：1) terminal Access network itself needs to safeguard to be connect with the NAS of MME, and terminal is by MME as it can be seen that being unfavorable for supporting a large amount of terminal in 5G networks And connection.2) terminal is mobile (localized routing) in the local of the minizones T-SC, is controlled the switching of terminal and access based on MME, Also large number of signaling overheads can be brought to MME.

Accordingly, it is desirable to provide a kind of mobility management scheme of terminal, can support the mobility pipe of great amount of terminals user Reason and mitigate network side signaling traffic load, reaches and support future 5G flexible controllable super-intensive networking purpose.

Invention content

The present invention provides a kind of motion management method and device of terminal, to support the mobility pipe of great amount of terminals user Reason and mitigate network side signaling traffic load, reaches and support future 5G flexible controllable super-intensive networking purpose.

In a first aspect, a kind of motion management method of terminal is provided, including：

When receiving the first switching request of source terminal cell T-SC, according to the state of at least one T-SC of management Information determines that the target T-SC of switching, first switching request include first IP of the to be switched terminal in the source T-SC Location；

The second switching request is sent to the target T-SC, second switching request includes the IP of the target T-SC Location；

The switching response message that the target T-SC is sent is received, the switching response message includes the to be switched terminal The second IP address in the target T-SC；

Switching command is sent to the source T-SC, forwards the switching command to the to be switched end by the source T-SC End, or the switching command is sent to the to be switched terminal, so that the to be switched terminal is cut to the target T-SC It changes, the switching command includes second IP address.

Second aspect provides a kind of motion management method of terminal, including：

According to the channel quality information that be switched terminal reports, the end belonging to the to be switched terminal switching is determined whether Endization cell T-SC；

If the result judged is yes, switching request is sent to software defined network SDN servers, the switching request includes First IP address of the to be switched terminal in the T-SC of source；

The switching command that the SDN servers are sent is received, the switching command includes the to be switched terminal in target The second IP address in T-SC；

The switching command is transmitted to the to be switched terminal so that the to be switched terminal to the target T-SC into Row switching.

The third aspect provides a kind of motion management method of terminal, including：

Receive the terminated cell T-SC switching requests that software defined network SDN servers are sent, the switching request packet Include the IP address for the target T-SC that the SDN servers determine；

For to be switched terminal distribution IP address, IP address of the to be switched terminal in the target T-SC is obtained；

Switching response message is sent to the SDN servers, so that the SDN servers are to the to be switched terminal or institute It states the source T-SC belonging to be switched terminal and sends switching command, the to be switched terminal is made to be switched over to the target T-SC, The switching response message includes IP address of the to be switched terminal in the target T-SC.

Fourth aspect provides a kind of software defined network SDN servers, including：

Determination unit, for when receiving the first switching request of source terminal cell T-SC, at least according to management The status information of one T-SC determines the target T-SC of switching, and first switching request includes to be switched terminal in the source T- The first IP address in SC；

First transmission unit, for sending the second switching request to the target T-SC, second switching request includes The IP address of the target T-SC；

First receiving unit, the switching response message sent for receiving the target T-SC, the switching response message Include second IP address of the to be switched terminal in the target T-SC；

Second transmission unit forwards the switching to order for sending switching command to the source T-SC by the source T-SC It enables to the to be switched terminal, or the switching command is sent to the to be switched terminal, so that the to be switched terminal is to institute It states target T-SC to switch over, the switching command includes second IP address.

5th aspect, provides a kind of terminated cell T-SC, including：

Judging unit, the channel quality information for being reported according to be switched terminal determine whether the to be switched end Terminated cell T-SC belonging to the switching of end；

Transmission unit sends switching request, institute if the result for judging is yes to software defined network SDN servers It includes first IP address of the to be switched terminal in the T-SC of source to state switching request；

First receiving unit, the switching command sent for receiving the SDN servers, the switching command include described Second IP address of the to be switched terminal in target T-SC；

Retransmission unit, for the switching command to be transmitted to the to be switched terminal so that the to be switched terminal to The target T-SC is switched over.

6th aspect, provides a kind of terminated cell T-SC, including：

First receiving unit, the terminated cell T-SC switchings for receiving the transmission of software defined network SDN servers are asked It asks, the switching request includes the IP address for the target T-SC that the SDN servers determine；

Allocation unit obtains the to be switched terminal in the target T-SC for being to be switched terminal distribution IP address In IP address；

First transmission unit, for the SDN servers send switching response message so that the SDN servers to Source T-SC belonging to the to be switched terminal or the to be switched terminal sends switching command, makes the to be switched terminal to described Target T-SC is switched over, and the switching response message includes IP address of the to be switched terminal in the target T-SC.

As it can be seen that according to a kind of motion management method and device of terminal provided by the invention, by by each T-SC structures At an IP subnet, the terminal that T-SC is converged becomes the internal node of the subnet, then collects all T-SC by SDN servers The status information of subnet does mobile management based on global state information, and movement of the terminal between T-SC no longer needs to remain to The control signaling of network side connects, and controls local mobile by supporting IP mobility management protocols by SDN servers, from And can support the mobile management of great amount of terminals user and mitigate network side signaling traffic load, reach and supports future 5G flexibly controllable The super-intensive networking purpose of system.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is the network architecture schematic diagram of three classes Small Cell schemes；

Fig. 2 is the mobile management control signaling stream contrast schematic diagram based on SDN and based on MME；

Fig. 3 is a kind of flow diagram of the motion management method of terminal provided in an embodiment of the present invention；

Fig. 4 is the flow diagram of the motion management method of another terminal provided in an embodiment of the present invention；

Fig. 5 is the flow diagram of the motion management method of another terminal provided in an embodiment of the present invention；

Fig. 6 is the flow diagram of the motion management method of another terminal provided in an embodiment of the present invention；

Fig. 7 is a kind of structural schematic diagram of software defined network SDN servers provided in an embodiment of the present invention；

Fig. 8 is the structural schematic diagram of another kind SDN servers provided in an embodiment of the present invention；

Fig. 9 is a kind of structural schematic diagram of terminated cell T-SC provided in an embodiment of the present invention；

Figure 10 is the structural schematic diagram of another kind T-SC provided in an embodiment of the present invention；

Figure 11 is the structural schematic diagram of another T-SC provided in an embodiment of the present invention；

Figure 12 is the structural schematic diagram of another T-SC provided in an embodiment of the present invention.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment shall fall within the protection scope of the present invention.

Software defined network (Software Defined Network, SDN) is a kind of new network wound of Emulex networks New architecture, is a kind of realization method of network virtualization, and core technology OpenFlow is by by network equipment control plane and number It is separated according to face, to realize the flexible control of network flow, network is made to become more intelligent as pipeline.Master of the present invention Want issue to be resolved is how SDN to be applied to T-SC, and realizes the mobile management of T-SC institutes convergence terminal.Such as Fig. 2 institutes The mobile management control signaling stream contrast schematic diagram based on SDN and based on MME shown, in Fig. 2, each T-SC constitutes an IP Subnet, the terminal that T-SC is converged become the internal node of the subnet；SDN servers collect the state letter of all T-SC subnets Breath, mobile management is done based on global state information；Mobility of the terminal between T-SC no longer needs to remain to the control of network side Signaling NAS, RRC processed connects (dotted line (1) in such as Fig. 2), and is controlled by SDN servers by supporting IP mobility management protocols Local mobile (dotted line (2) in such as Fig. 2)；So as to support the mobile management of great amount of terminals user and mitigate network side letter Load is enabled, reaches and supports future 5G flexible controllable super-intensive networking purpose.

With reference to Fig. 3-Fig. 6, the motion management method of terminal provided by the invention is described in detail：

Referring to Fig. 3, be a kind of flow diagram of the motion management method of terminal provided in an embodiment of the present invention, it should Method includes the following steps：

Step S101, when receiving the first switching request of source terminal cell T-SC, according at least one of management The status information of T-SC determines the target T-SC of switching, and first switching request includes to be switched terminal in the source T-SC The first IP address.

Terminal or user equipment (UE) in the IP subnets that source T-SC can periodically or sporadically manage source T-SC carry out letter The measurement of road quality, the channel quality that source T-SC is reported according to terminal determine whether to cut some of which terminal progress T-SC It changes.When source T-SC determinations will carry out T-SC switchings to a certain terminal, source T-SC sends switching request, SDN clothes to SDN servers Business device receives the switching request of each source T-SC, which includes IP address of the to be switched terminal in source T-SC terminals, Each T-SC constitutes an IP subnet, and IP address distribution and management, therefore, source are carried out to the terminal in the subnet by each T-SC Any relationship is not present in the IP address of the IP address of terminal in T-SC and the terminal in other T-SC, and SDN servers are according to this IP address will be seen which source T-SC is the terminals come from.

The state for all T-SC that SDN servers manage it has the global understanding, these status informations to include：T-SC's The quantity and total data traffic etc. for the terminal that IP address, electricity, access link quality information, each T-SC are managed, therefore, SDN should switch to which target T-SC carries out a global judgement according to these status informations to terminal so that each T- The load balancing of SC, meanwhile, so that terminal is obtained preferable channel quality.

Step S102 sends the second switching request to the target T-SC, and second switching request includes the target The IP address of T-SC.

SDN servers send switching request according to the IP address of determining target T-SC, and notice target T-SC will be to be cut It changes terminal and switches to target T-SC.

Step S103, receives the switching response message that the target T-SC is sent, and the switching response message includes described Second IP address of the to be switched terminal in the target T-SC.

After target T-SC receives the switching request of SDN servers, it is the new IP address of to be switched terminal distribution, is waited for New IP address of the switching terminal in target T-SC, target T-SC switch over response to SDN servers, and SDN servers connect The switching response message that target T-SC is sent is received, which includes that be switched terminal is new in target T-SC IP address.

Step S104, switching command is sent to the source T-SC, forwards the switching command to described by the source T-SC To be switched terminal, or the switching command is sent to the to be switched terminal, so that the to be switched terminal is to the target T- SC is switched over, and the switching command includes second IP address.

SDN servers send switching command to source T-SC, notify to be switched terminal to switch to target T-SC by source T-SC, Can be that SDN servers directly send switching command to be switched terminal, which includes to be switched terminal in target T- New IP address in SC, to be switched terminal are communicated according to the new IP address with target T-SC foundation.

Figure it is seen that the mobile management based on SDN controls exists with the mobile management difference based on MME controls In：Terminal no longer needs to remain to the control signaling Non-Access Stratum (Non-Access-Stratum, NAS) of network side, wireless money Source control (Radio Resource Control, RRC) connection, as long as T-SC itself remain to network side control signaling NAS, RRC connections, and the local controlled based on SDN can be supported mobile for IP address in one target T-SC subnet of terminal distribution Property.And multiple terminals constitute the IP subnets of a T-SC, are conducive to the mobile management for supporting great amount of terminals user.

The motion management method of a kind of terminal provided according to embodiments of the present invention, by constituting one by each T-SC IP subnets, the terminal that T-SC is converged become the internal node of the subnet, then collect all T-SC subnets by SDN servers Status information does mobile management based on global state information, and movement of the terminal between T-SC no longer needs to remain to network side Control signaling connection, and control local mobile by supporting IP mobility management protocols by SDN servers, so as to It supports the mobile management of great amount of terminals user and mitigates network side signaling traffic load, reach and support that future 5G is flexibly controllable super Intensive networking purpose.

Referring to Fig. 4, the flow diagram of the motion management method for another terminal provided in an embodiment of the present invention, This approach includes the following steps：

Step S201 determines whether that the to be switched terminal is cut according to the channel quality information that be switched terminal reports Change affiliated terminated cell T-SC.

Terminal or user equipment (UE) in the IP subnets that source T-SC can periodically or sporadically manage source T-SC carry out letter The measurement of road quality, the channel quality that source T-SC is reported according to terminal determine whether to cut some of which terminal progress T-SC It changes.

Step S202 sends switching request if the result judged is yes to software defined network SDN servers, described to cut It includes first IP address of the to be switched terminal in the T-SC of source to change request.

When source T-SC determinations will carry out T-SC switchings to a certain terminal, source T-SC sends switching request to SDN servers, SDN servers receive the switching request of each source T-SC, which includes IP of the to be switched terminal in source T-SC terminals Address, each T-SC constitute an IP subnet, and IP address distribution and management are carried out to the terminal in the subnet by each T-SC, because This, any relationship, SDN server roots is not present in the IP address of the terminal in the T-SC of source and the IP address of the terminal in other T-SC It will be seen which source T-SC is the terminals come from according to the IP address.

Step S203 receives the switching command that the SDN servers are sent, and the switching command includes the to be switched end Hold the second IP address in target T-SC.

The state for all T-SC that SDN servers manage it has the global understanding, these status informations to include：T-SC's The quantity and total data traffic etc. for the terminal that IP address, electricity, access link quality information, each T-SC are managed, therefore, SDN should switch to which target T-SC carries out a global judgement according to these status informations to terminal so that each T- The load balancing of SC, meanwhile, so that terminal is obtained preferable channel quality.Then, SDN servers are according to determining target T-SC's IP address sends switching request, and to be switched terminal is switched to target T-SC by notice target T-SC.Target T-SC receives SDN After the switching request of server, it is the new IP address of to be switched terminal distribution, it is new in target T-SC obtains to be switched terminal IP address, target T-SC switches over response to SDN servers, and SDN servers receive the handoff response that target T-SC is sent Message, the switching response message include new IP address of the to be switched terminal in target T-SC.SDN servers are to source T-SC Send switching command.

Source T-SC receives the switching command that SDN servers are sent.

The switching command is transmitted to the to be switched terminal by step S204, so that the to be switched terminal is to described Target T-SC is switched over.

Source T-SC notifies to be switched terminal to switch to target T-SC, which includes to be switched terminal in target T-SC In new IP address, to be switched terminal communicates according to the new IP address with target T-SC foundation.

Referring to Fig. 5, the flow diagram of the motion management method for another terminal provided in an embodiment of the present invention, This approach includes the following steps：

Step S301 receives the terminated cell T-SC switching requests that software defined network SDN servers are sent, described to cut Change the IP address that request includes the target T-SC that the SDN servers determine.

Terminal or user equipment (UE) in the IP subnets that source T-SC can periodically or sporadically manage source T-SC carry out letter The measurement of road quality, the channel quality that source T-SC is reported according to terminal determine whether to cut some of which terminal progress T-SC It changes.When source T-SC determinations will carry out T-SC switchings to a certain terminal, source T-SC sends switching request, SDN clothes to SDN servers Business device receives the switching request of each source T-SC.

SDN servers send switching request according to the IP address of determining target T-SC, and notice target T-SC will be to be cut It changes terminal and switches to target T-SC.Target T-SC receives the switching request that SDN servers are sent.

Step S302 is to be switched terminal distribution IP address, obtains the to be switched terminal in the target T-SC IP address.

Target T-SC to the IP address of the terminal in its IP subnet voluntarily distribute and manage, and switches when there is new terminal When coming in, new IP address is distributed for it, the IP address which obtains in target T-SC is with the terminal in the T-SC of source Any relationship is not present in IP address.

Step S303 sends switching response message to the SDN servers, so that the SDN servers are to described to be cut It changes the source T-SC belonging to terminal or the to be switched terminal and sends switching command, make the to be switched terminal to the target T-SC It switches over, the switching response message includes IP address of the to be switched terminal in the target T-SC.

Target T-SC switches over response to SDN servers, and SDN servers receive the handoff response that target T-SC is sent and disappear Breath, which includes new IP address of the to be switched terminal in target T-SC.SDN servers are sent out to source T-SC Switching command is sent, notifies to be switched terminal to switch to target T-SC by source T-SC, can also be SDN servers directly to be switched Terminal sends switching command, which includes new IP address of the to be switched terminal in target T-SC, to be switched terminal It is communicated with target T-SC foundation according to the new IP address.

The mobility management process of terminal is carried out from SDN server sides, the source sides T-SC and the sides target T-SC respectively above Description, below from the mobility management process of terminal, SDN servers, source T-SC and target the T-SC terminal interacted into Row further detailed description：

Referring to Fig. 6, the flow diagram of the motion management method for another terminal provided in an embodiment of the present invention, This approach includes the following steps：

Step 1 (a), source T-SC measure configuration to terminal/user equipment UE.

Step 1 (b), terminal/UE are measured to source T-SC and are reported, and source T-SC carries out the switch decision of terminal/UE.

Step 2, source T-SC sends switching request to SDN servers, which includes terminal/UE in the T-SC of source IP address, status informations of the SDN based on all T-SC switches over and accesses control, including determines target T-SC.

When source T-SC determinations will carry out T-SC switchings to a certain terminal, source T-SC sends switching request to SDN servers, SDN servers receive the switching request of each source T-SC, which includes IP of the to be switched terminal in source T-SC terminals Address, each T-SC constitute an IP subnet, and IP address distribution and management are carried out to the terminal in the subnet by each T-SC, because This, any relationship, SDN server roots is not present in the IP address of the terminal in the T-SC of source and the IP address of the terminal in other T-SC It will be seen which source T-SC is the terminals come from according to the IP address.Here, the switching request that source T-SC is sent to SDN servers can To be transport layer message or application layer messages.

Specifically, terminal accesses T-SC and establishes and connect with the IP of T-SC, and each T-SC constitutes an IP subnet, T-SC institutes The terminal of convergence becomes the internal node of the subnet；Using the IP address that T-SC accessing terminal to network is distributed by P-GW as IP subnets Gateway address, terminal accesses the IP address of T-SC by network prefix (Network Prefix) and local suffix (Host Suffix) two parts form, and using the IP address of T-SC as network prefix, local suffix is independently distributed and managed by T-SC.

After T-SC accesses Cellular Networks, the status information of oneself is sent to SDN servers, status information includes the IP of T-SC Address, electricity and access link quality information etc..Particularly, lead to the IP address of T-SC due to the mobility of itself as T-SC When change, need to update the status information to SDN servers.Meanwhile the status information of terminal that each T-SC is also converged SDN servers are sent to, these status informations include the data traffic etc. of convergence or the terminal quantity, convergence that manage.

SDN should switch to which target T-SC carries out a global judgement, makes according to these status informations to terminal The load balancing of each T-SC is obtained, meanwhile, so that terminal is obtained preferable channel quality.With the data traffic shape converged according to T-SC State information progress target T-SC's is determined as example, and the flow that each T-SC has currently been converged varies, and what can be born is total Flow also has the upper limit, and SDN servers need to consider that the flow of terminal is attached to when determining that some terminal is switched to new T-SC Whether traffic load caused by new T-SC can bear, and can reach each T-SC remittances based on SDN controls to do global optimization Poly- flow equalization.

Step 3 (a), SDN servers send switching request to target T-SC, which includes the IP of target T-SC Location.

SDN servers send switching request, notice target T- according to the IP address of determining target T-SC to target T-SC SC will switch a new terminal to target T-SC.Here, the switching request that SDN servers are sent to target T-SC can be passed Defeated layer message or application layer messages.

Target T-SC to the IP address of the terminal in its IP subnet voluntarily distribute and manage, and switches when there is new terminal When coming in, new IP address is distributed for it, the IP address which obtains in target T-SC is with the terminal in the T-SC of source Any relationship is not present in IP address.Target T-SC is the local suffix that the new IP address of terminal distribution is the IP address of terminal, The IP address and newly assigned local suffix that the IP address that the terminal obtains in target T-SC is target T-SC are constituted.

Step 3 (b), target T-SC switch over request-reply to SDN servers, switching response message include terminal/ IP address new in target T-SC UE.

Target T-SC switches over response to SDN servers, and SDN servers receive the handoff response that target T-SC is sent and disappear Breath, which includes new IP address of the to be switched terminal in target T-SC.Here, target T-SC is to SDN The switching response message of server hair can be transport layer message or application layer messages.

Step 4, SDN servers send switching command to terminal/UE, which includes terminal/UE in target T- New IP address in SC.

SDN servers send switching command to source T-SC, notify to be switched terminal to switch to target T-SC by source T-SC, Can be that SDN servers directly send switching command to be switched terminal, which includes to be switched terminal in target T- New IP address in SC.Here, switching command can be the transport layer message of source T-SC forwardings, can also be source T-SC forwardings Application layer messages, can also be the application layer messages based on to be switched terminal Yu SDN servers.

Step 5, based on the direct-connected state transfer for communicating D2D links between source T-SC and target T-SC.

Here state transfer is primarily referred to as：The data packet that not yet distributes and data packet of the to be switched terminal in source T-SC Information (such as sequence number, superframe number that support sequence is given out a contract for a project, data package size etc.) is transferred to new target T-SC up, with Just target T-SC continues the forwarding etc. of the data packet of terminal according to the data mode of terminal.

Step 6, terminal/UE completes the switching to target T-SC.

To be switched terminal is communicated according to the new IP address with target T-SC foundation.

Step 7 (a), target T-SC obtain the to be transmitted of to be switched terminal to SDN server transmitting path convert requests The routed path of data packet.

Step 7 (b), SDN servers carry out path integration request-reply to target T-SC, are sent to what target T-SC was determined Routed path.

Since the switching of T-SC has occurred in terminal, the routing of data transmission also changes, therefore, target T-SC to SDN server transmitting path convert requests obtain the new routed path of the data packet for the terminal that SDN is determined, so as to target T- SC can successfully carry out the forwarding etc. of the data packet of terminal.Here, path integration request and path integration request-reply can be with It is transport layer message or application layer messages.

Step 8, target T-SC sends release resource announcement message to source T-SC, and source T-SC discharges occupied by be switched terminal Resource.

For terminal after source T-SC switches to target T-SC, source T-SC need not be the sheet of terminal distribution IP address of terminal again Ground suffix, and state transfer is also completed between T-SC, therefore, target T-SC notices source T-SC can discharge the occupied money of terminal Source.

The device of the mobile management for the terminal for realizing the present invention with reference to Fig. 7-12 pairs is described in detail：

Referring to Fig. 7, being a kind of structural schematic diagram of SDN servers provided in an embodiment of the present invention, the SDN servers 1000 include：

Determination unit 11, for when receiving the first switching request of source terminal cell T-SC, extremely according to management The status information of a few T-SC determines the target T-SC of switching, and first switching request includes to be switched terminal in the source The first IP address in T-SC.

The state for all T-SC that SDN servers manage it has the global understanding, these status informations to include：T-SC's The quantity and total data traffic etc. for the terminal that IP address, electricity, access link quality information, each T-SC are managed, therefore, really Order member 11 should switch to which target T-SC carries out a global judgement according to these status informations to terminal so that each The load balancing of a T-SC, meanwhile, so that terminal is obtained preferable channel quality.

First transmission unit 12, for sending the second switching request, the second switching request packet to the target T-SC Include the IP address of the target T-SC.

First transmission unit 12 sends switching request according to the IP address of determining target T-SC, and notice target T-SC will To be switched terminal switches to target T-SC.

First receiving unit 13, the switching response message sent for receiving the target T-SC, the handoff response disappear Breath includes second IP address of the to be switched terminal in the target T-SC.

After target T-SC receives the switching request of SDN servers, it is the new IP address of to be switched terminal distribution, is waited for New IP address of the switching terminal in target T-SC, target T-SC switch over response, the first receiving unit to SDN servers 13 receive the switching response message that target T-SC is sent, which includes to be switched terminal in target T-SC New IP address.

Second transmission unit 14 forwards the switching for sending switching command to the source T-SC by the source T-SC Order to the to be switched terminal, or the switching command sent to the to be switched terminal so that the to be switched terminal to The target T-SC is switched over, and the switching command includes second IP address.

Second transmission unit 14 sends switching command to source T-SC, notifies to be switched terminal to switch to target T- by source T-SC SC can also be that SDN servers directly send switching command to be switched terminal, which includes to be switched terminal in mesh The new IP address in T-SC is marked, to be switched terminal is communicated according to the new IP address with target T-SC foundation.

A kind of SDN servers provided according to embodiments of the present invention, by constituting an IP subnet, T-SC by each T-SC The terminal converged becomes the internal node of the subnet, and the status information of all T-SC subnets, base are then collected by SDN servers Mobile management is done in global state information, movement of the terminal between T-SC no longer needs the control signaling for remaining to network side to connect It connects, and local mobile is controlled by supporting IP mobility management protocols by SDN servers, so as to support great amount of terminals The mobile management of user and mitigate network side signaling traffic load, reaches and support future 5G flexible controllable super-intensive group mesh 's.

Referring to Fig. 8, for the structural schematic diagram of another kind SDN servers provided in an embodiment of the present invention, the SDN servers 2000 include：

Second receiving unit 21, the status information reported for receiving at least one T-SC, the state letter Breath includes the quantity for the terminal that the IP address of at least one T-SC, electricity, access link quality information, each T-SC are managed With total data traffic.

Determination unit 22, for when receiving the first switching request of source terminal cell T-SC, extremely according to management The status information of a few T-SC determines the target T-SC of switching, and first switching request includes to be switched terminal in the source The first IP address in T-SC.

First transmission unit 23, for sending the second switching request, the second switching request packet to the target T-SC Include the IP address of the target T-SC.

First receiving unit 24, the switching response message sent for receiving the target T-SC, the handoff response disappear Breath includes second IP address of the to be switched terminal in the target T-SC.

Second transmission unit 25 forwards the switching for sending switching command to the source T-SC by the source T-SC Order to the to be switched terminal, or the switching command sent to the to be switched terminal so that the to be switched terminal to The target T-SC is switched over, and the switching command includes second IP address.

Determination unit 22, the first transmission unit 23, the first receiving unit 24, the second transmission unit 25 function respectively with figure The determination unit 11 of 7 illustrated embodiments, the first transmission unit 12, the first receiving unit 13, the second transmission unit 14 are identical, herein It repeats no more.

Third receiving unit 26, the data to be transmitted for receiving the to be switched terminal that the target T-SC is sent The routed path of packet obtains request.

Third transmission unit 27, for sending determining routed path to the target T-SC.

Since the switching of T-SC has occurred in terminal, the routing of data transmission also changes, therefore, target T-SC to SDN server transmitting path convert requests obtain the new routed path of the data packet for the terminal that SDN is determined, so as to target T- SC can successfully carry out the forwarding etc. of the data packet of terminal.

Referring to Fig. 9, being a kind of structural schematic diagram of T-SC provided in an embodiment of the present invention, which includes：

Judging unit 31, the channel quality information for being reported according to be switched terminal determine whether described to be switched Terminated cell T-SC belonging to terminal switching.

Terminal or user equipment (UE) in the IP subnets that source T-SC can periodically or sporadically manage source T-SC carry out letter The measurement of road quality, the channel quality that judging unit 31 is reported according to terminal determine whether to carry out T- to some of which terminal SC switches.

Transmission unit 32 sends switching request if the result for judging is yes to software defined network SDN servers, The switching request includes first IP address of the to be switched terminal in the T-SC of source.

When source T-SC determinations will carry out T-SC switchings to a certain terminal, transmission unit 32 is sent to SDN servers to be switched Request, SDN servers receive the switching request of each source T-SC, which includes to be switched terminal in source T-SC terminals IP address, each T-SC constitutes an IP subnet, IP address distribution and pipe carried out to the terminal in the subnet by each T-SC Any relationship, SDN clothes are not present in reason, therefore, the IP address of the IP address of the terminal in the T-SC of source and the terminal in other T-SC Business device will be seen which source T-SC is the terminals come from according to the IP address.

First receiving unit 33, the switching command sent for receiving the SDN servers, the switching command includes institute State second IP address of the to be switched terminal in target T-SC.

First receiving unit 33 receives the switching command that SDN servers are sent.

Retransmission unit 34, for the switching command to be transmitted to the to be switched terminal, so that the to be switched terminal It is switched over to the target T-SC.

A kind of T-SC provided according to embodiments of the present invention, by constituting an IP subnet by each T-SC, T-SC is converged Poly- terminal becomes the internal node of the subnet, and the status information of all T-SC subnets is then collected by SDN servers, based on complete Office's status information does mobile management, and movement of the terminal between T-SC no longer needs to remain to the control signaling connection of network side, And local mobile is controlled by supporting IP mobility management protocols by SDN servers, so as to support great amount of terminals to use The mobile management at family and mitigate network side signaling traffic load, reaches and support future 5G flexible controllable super-intensive networking purpose.

Referring to Fig. 10, for the structural schematic diagram of another kind T-SC provided in an embodiment of the present invention, which includes：

Reporting unit 41, for the SDN servers uploaded state information, the status information to include the source T-SC IP address, electricity, access link quality information, the source T-SC management terminal quantity and total data traffic.

After T-SC accesses Cellular Networks, the status information of oneself is sent to SDN servers by T-SC, and status information includes T-SC IP address, electricity and access link quality information etc..Particularly, lead to the IP of T-SC due to the mobility of itself as T-SC When address modification, need to update the status information to SDN servers.Meanwhile the state of terminal that each T-SC is also converged Information is sent to SDN servers, these status informations include the data traffic etc. of convergence or the terminal quantity, convergence that manage.

Judging unit 42, the channel quality information for being reported according to be switched terminal determine whether described to be switched Terminated cell T-SC belonging to terminal switching.

Transmission unit 43 sends switching request if the result for judging is yes to software defined network SDN servers, The switching request includes first IP address of the to be switched terminal in the T-SC of source.

First receiving unit 44, the switching command sent for receiving the SDN servers, the switching command includes institute State second IP address of the to be switched terminal in target T-SC.

Retransmission unit 45, for the switching command to be transmitted to the to be switched terminal, so that the to be switched terminal It is switched over to the target T-SC.

Judging unit 42, transmission unit 43, the first receiving unit 44, retransmission unit 45 function respectively with it is real shown in Fig. 9 Judging unit 31, transmission unit 32, the first receiving unit 33, the retransmission unit 34 for applying example are identical, and details are not described herein.

State-transferring unit 46 carries out the to be switched end for being based on the direct-connected D2D links that communicate with the target T-SC The state at end shifts.

Second receiving unit 47, the release resource announcement message for receiving the target T-SC.

Releasing unit 48, the resource occupied for discharging the to be switched terminal.

1 is please referred to Fig.1, is the structural schematic diagram of another T-SC provided in an embodiment of the present invention, which includes：

First receiving unit 51, the terminated cell T-SC switchings for receiving the transmission of software defined network SDN servers Request, the switching request include the IP address for the target T-SC that the SDN servers determine.

SDN servers send switching request according to the IP address of determining target T-SC, and notice target T-SC will be to be cut It changes terminal and switches to target T-SC.First receiving unit 51 receives the switching request that SDN servers are sent.

Allocation unit 52 obtains the to be switched terminal in the target T- for being to be switched terminal distribution IP address IP address in SC.

Target T-SC to the IP address of the terminal in its IP subnet voluntarily distribute and manage, and switches when there is new terminal When coming in, allocation unit 52 distributes new IP address for it, and the IP address which obtains in target T-SC exists with the terminal Any relationship is not present in IP address in the T-SC of source.

First transmission unit 53, for sending switching response message to the SDN servers, so that the SDN servers Switching command is sent to the source T-SC belonging to the to be switched terminal or the to be switched terminal, makes the to be switched terminal to institute It states target T-SC to switch over, the switching response message includes IP of the to be switched terminal in the target T-SC Location.

First transmission unit 53 switches over response to SDN servers, and SDN servers receive the switching that target T-SC is sent Response message, the switching response message include new IP address of the to be switched terminal in target T-SC.SDN servers are to source T-SC send switching command, notify to be switched terminal to switch to target T-SC by source T-SC, can also be SDN servers directly to To be switched terminal sends switching command, which includes new IP address of the to be switched terminal in target T-SC, to be cut Terminal is changed to be communicated with target T-SC foundation according to the new IP address.

2 are please referred to Fig.1, is the structural schematic diagram of another T-SC provided in an embodiment of the present invention, which includes：

First receiving unit 61, the terminated cell T-SC switchings for receiving the transmission of software defined network SDN servers Request, the switching request include the IP address for the target T-SC that the SDN servers determine.

Allocation unit 62 obtains the to be switched terminal in the target T- for being to be switched terminal distribution IP address IP address in SC.

First transmission unit 63, for sending switching response message to the SDN servers, so that the SDN servers Switching command is sent to the source T-SC belonging to the to be switched terminal or the to be switched terminal, makes the to be switched terminal to institute It states target T-SC to switch over, the switching response message includes IP of the to be switched terminal in the target T-SC Location.

First receiving unit 61, allocation unit 62, the function of the first transmission unit 63 respectively with embodiment illustrated in fig. 11 First receiving unit 51, allocation unit 52, the first transmission unit 53 are identical, and details are not described herein.

State-transferring unit 64 carries out the to be switched terminal for being based on the direct-connected D2D links that communicate with the source T-SC State transfer.

Second transmission unit 65, the data packet to be transmitted for sending the to be switched terminal to the SDN servers Routed path obtain request.

Second receiving unit 66, the routed path for receiving the determination that the SDN servers are sent.

Third transmission unit 67, for sending release resource announcement message to the source T-SC.

It should be noted that for each method embodiment above-mentioned, for simple description, therefore it is all expressed as a series of Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the described action sequence because According to the present invention, certain steps can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know It knows, embodiment described in this description belongs to preferred embodiment, and involved action and module are not necessarily of the invention It is necessary.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, it may refer to the associated description of other embodiment.

Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can be with It is realized with hardware realization or firmware realization or combination thereof mode.It when implemented in software, can be by above-mentioned function Storage in computer-readable medium or as on computer-readable medium one or more instructions or code be transmitted.Meter Calculation machine readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from a place to another Any medium of a place transmission computer program.Storage medium can be any usable medium that computer can access.With For this but it is not limited to：Computer-readable medium may include random access memory (Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), Electrically Erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read- Only Memory, CD-ROM) or other optical disc storages, magnetic disk storage medium or other magnetic storage apparatus or can be used in Carry or storage with instruction or data structure form desired program code and can by computer access any other Medium.In addition.Any connection appropriate can become computer-readable medium.For example, if software is using coaxial cable, light Fine optical cable, twisted-pair feeder, Digital Subscriber Line (Digital Subscriber Line, DSL) or such as infrared ray, radio and The wireless technology of microwave etc is transmitted from website, server or other remote sources, then coaxial cable, optical fiber cable, double The wireless technology of twisted wire, DSL or such as infrared ray, wireless and microwave etc is included in the fixing of affiliated medium.Such as this hair Used in bright, disk (Disk) and dish (disc) include compress optical disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), Floppy disk and Blu-ray Disc, the usually magnetic replicate data of which disk, and dish is then with laser come optical replicate data.Group above Conjunction should also be as being included within the protection domain of computer-readable medium.

In short, the foregoing is merely the preferred embodiment of technical solution of the present invention, it is not intended to limit the present invention's Protection domain.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in Within protection scope of the present invention.

Claims

1. a kind of motion management method of terminal is applied to network SDN servers, which is characterized in that including：

When receiving the first switching request of source terminal cell T-SC, according to the status information of at least one T-SC of management Determine the target T-SC of switching, first switching request includes first IP address of the to be switched terminal in the source T-SC；

The second switching request is sent to the target T-SC, second switching request includes the IP address of the target T-SC；

The switching response message that the target T-SC is sent is received, the switching response message includes the to be switched terminal in institute State the second IP address in target T-SC, the IP address of each terminal in the source T-SC with it is each in the target T-SC The IP address of terminal is different；

The switching command is sent to the to be switched terminal, so that the to be switched terminal is cut to the target T-SC It changes, the switching command includes second IP address.

2. the method as described in claim 1, which is characterized in that further include：

The status information that at least one T-SC is reported is received, the status information includes at least one T-SC The quantity and total data traffic for the terminal that IP address, electricity, access link quality information, each T-SC are managed.

3. method as claimed in claim 1 or 2, which is characterized in that the first or second IP address is by network prefix and this Ground suffix is constituted, and the network prefix is the IP address of the source T-SC or target T-SC, and the local suffix is the source T- SC or target T-SC is the IP address of the to be switched terminal distribution.

4. method as claimed in claim 3, which is characterized in that further include：

The routed path for receiving the data packet to be transmitted for the to be switched terminal that the target T-SC is sent obtains request；

Determining routed path is sent to the target T-SC.

5. a kind of motion management method of terminal is applied to source T-SC, which is characterized in that including：

According to the channel quality information that be switched terminal reports, the terminated belonging to the to be switched terminal switching is determined whether Cell T-SC；

If the result judged is yes, switching request is sent to software defined network SDN servers, the switching request includes described First IP address of the to be switched terminal in the T-SC of source；

The switching command that the SDN servers are sent is received, the switching command includes the to be switched terminal in target T-SC In the second IP address, the IP address of each terminal in the source T-SC is with the IP of each terminal in the target T-SC Location is different；

The switching command is transmitted to the to be switched terminal, so that the to be switched terminal is cut to the target T-SC It changes.

6. method as claimed in claim 5, which is characterized in that further include：

To the SDN servers uploaded state information, the status information includes the IP address of the source T-SC, electricity, access Link quality information, the quantity of the terminal of source T-SC management and total data traffic.

7. such as method described in claim 5 or 6, which is characterized in that further include：

With the target T-SC based on the direct-connected state transfer for communicating D2D links and carrying out the to be switched terminal.

8. the method for claim 7, which is characterized in that further include：

Receive the release resource announcement message of the target T-SC；

Discharge the resource that the to be switched terminal occupies.

9. a kind of motion management method of terminal is applied to target T-SC, which is characterized in that including：

The terminated cell T-SC switching requests that software defined network SDN servers are sent are received, the switching request includes institute State the IP address of the target T-SC of SDN servers determination；

For to be switched terminal distribution IP address, IP address of the to be switched terminal in the target T-SC, source T-SC are obtained In each terminal IP address it is different from the IP address of each terminal in the target T-SC；

Send switching response message to the SDN servers so that the SDN servers to the to be switched terminal, make it is described To be switched terminal is switched over to the target T-SC, and the switching response message includes the to be switched terminal in the target IP address in T-SC.

10. method as claimed in claim 9, which is characterized in that IP of the to be switched terminal in the target T-SC Location is made of network prefix and local suffix, and the network prefix is the IP address of the target T-SC, and the local suffix is The target T-SC is the IP address of the to be switched terminal distribution.

11. the method as described in claim 9 or 10, which is characterized in that further include：

With the source T-SC based on the direct-connected state transfer for communicating D2D links and carrying out the to be switched terminal.

12. method as claimed in claim 11, which is characterized in that further include：

The routed path that the data packet to be transmitted of the to be switched terminal is sent to the SDN servers obtains request；

Receive the routed path for the determination that the SDN servers are sent；

Release resource announcement message is sent to the source T-SC.

13. a kind of software defined network SDN servers, which is characterized in that including：

Determination unit, for when receiving the first switching request of source terminal cell T-SC, according at least one of management The status information of T-SC determines the target T-SC of switching, and first switching request includes to be switched terminal in the source T-SC The first IP address；

First transmission unit, for sending the second switching request to the target T-SC, second switching request includes described The IP address of target T-SC；

First receiving unit, the switching response message sent for receiving the target T-SC, the switching response message include Second IP address of the to be switched terminal in the target T-SC, the IP address of each terminal in the source T-SC and institute The IP address for stating each terminal in target T-SC is different；

Second transmission unit, for sending the switching command to the to be switched terminal, so that the to be switched terminal is to institute It states target T-SC to switch over, the switching command includes second IP address.

14. SDN servers as claimed in claim 13, which is characterized in that further include：

Second receiving unit, the status information reported for receiving at least one T-SC, the status information include The IP address of at least one T-SC, electricity, access link quality information, the quantity of terminal of each T-SC management and total Data traffic.

15. SDN servers according to claim 13 or 14, which is characterized in that the first or second IP address is by network Prefix and local suffix are constituted, and the network prefix is the IP address of the source T-SC or target T-SC, and the local suffix is The source T-SC or target T-SC is the IP address of the to be switched terminal distribution.

16. SDN servers as claimed in claim 15, which is characterized in that further include：

Third receiving unit, the road of the data packet to be transmitted for receiving the to be switched terminal that the target T-SC is sent It is obtained and is asked by path；

Third transmission unit, for sending determining routed path to the target T-SC.

17. a kind of terminated cell T-SC, which is characterized in that including：

Judging unit, the channel quality information for being reported according to be switched terminal determine whether that the to be switched terminal is cut Change affiliated terminated cell T-SC；

Transmission unit sends switching request if the result for judging is yes to software defined network SDN servers, described to cut It includes first IP address of the to be switched terminal in the T-SC of source to change request；

First receiving unit, the switching command sent for receiving the SDN servers, the switching command includes described to be cut Change second IP address of the terminal in target T-SC, the IP address of each terminal in the source T-SC in the target T-SC Each terminal IP address it is different；

Retransmission unit, for the switching command to be transmitted to the to be switched terminal, so that the to be switched terminal is to described Target T-SC is switched over.

18. T-SC as claimed in claim 17, which is characterized in that further include：

Reporting unit, for the SDN servers uploaded state information, the status information includes the IP of the source T-SC The quantity and total data traffic for the terminal that location, electricity, access link quality information, the source T-SC are managed.

19. the T-SC as described in claim 17 or 18, which is characterized in that further include：

State-transferring unit, for the target T-SC based on the direct-connected shape for communicating D2D links and carrying out the to be switched terminal State shifts.

20. T-SC as claimed in claim 19, which is characterized in that further include：

Second receiving unit, the release resource announcement message for receiving the target T-SC；

Releasing unit, the resource occupied for discharging the to be switched terminal.

21. a kind of terminated cell T-SC, which is characterized in that including：

First receiving unit, the terminated cell T-SC switching requests for receiving the transmission of software defined network SDN servers, institute State the IP address that switching request includes the target T-SC that the SDN servers determine；

Allocation unit obtains the to be switched terminal in the target T-SC for being to be switched terminal distribution IP address The IP address of IP address, each terminal in the T-SC of source is different from the IP address of each terminal in the target T-SC；

First transmission unit, for sending switching response message to the SDN servers, so that the SDN servers are to described To be switched terminal makes the to be switched terminal be switched over to the target T-SC, and the switching response message includes described waits for IP address of the switching terminal in the target T-SC.

22. T-SC as claimed in claim 21, which is characterized in that IP of the to be switched terminal in the target T-SC Location is made of network prefix and local suffix, and the network prefix is the IP address of the target T-SC, and the local suffix is The target T-SC is the IP address of the to be switched terminal distribution.

23. the T-SC as described in claim 21 or 22, which is characterized in that further include：

State-transferring unit, for the source T-SC based on the direct-connected state for communicating D2D links and carrying out the to be switched terminal Transfer.

24. T-SC as claimed in claim 23, which is characterized in that further include：

Second transmission unit, the routing of the data packet to be transmitted for sending the to be switched terminal to the SDN servers Path obtains request；

Second receiving unit, the routed path for receiving the determination that the SDN servers are sent；

Third transmission unit, for sending release resource announcement message to the source T-SC.