CN103491584A - Method for achieving local intercommunication and network cell equipment - Google Patents
Method for achieving local intercommunication and network cell equipment Download PDFInfo
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- CN103491584A CN103491584A CN201210191820.4A CN201210191820A CN103491584A CN 103491584 A CN103491584 A CN 103491584A CN 201210191820 A CN201210191820 A CN 201210191820A CN 103491584 A CN103491584 A CN 103491584A
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Abstract
The invention discloses a method for achieving local intercommunication and network cell equipment. The method comprises the steps that a terminal using the local intercommunication function under a source wireless side network element needs to be changed over into a target wireless side network element, and when judging that the terminal can maintain the local intercommunication function under the target wireless side network element, the source wireless side network element informs the target wireless side network element of the local intercommunication information; the target wireless side network element and a local intercommunication opposite terminal wireless side network element of the terminal establish a local intercommunication route optimization channel according to the local intercommunication information. According to the scheme, the problem that the local intercommunication channel is processed unreasonably when the terminal is switched over under the local intercommunication situation can be solved, a new local intercommunication channel can be successfully established and the old local intercommunication channel can be timely released when the terminal is switched over, meanwhile, a network signaling is saved, and the operation lag occurring in the process of achieving the local intercommunication is effectively prevented.
Description
Technical field
The present invention relates to moving communicating field, be specifically related in the 3GPP network implementation method and the network element device of local intercommunication when terminal switches.
Background technology
In order to keep the competitiveness of 3-G (Generation Three mobile communication system) in the communications field, for the user provides, speed is faster, the lower and more personalized Mobile Communication Service of time delay, simultaneously, reduce the operation cost of operator, third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) the standard operation group just is being devoted to the research of evolved packet system (Evolved Packet System, be called for short EPS).Fig. 1 shows the structural representation of evolution grouping domain system, and as shown in Figure 1, whole EPS system is divided into wireless access network and core net two parts.In core net, comprised home subscriber server (Home Subscriber Server, referred to as HSS), Mobility Management Entity (Mobility Management Entity, referred to as MME), Serving GPRS Support Node (Serving GPRS Support Node, referred to as SGSN), policy charging rule function (Policy and Charging Rule Function, referred to as PCRF), gateway (Serving Gateway, referred to as S-GW), packet data gateway (PDN Gateway, referred to as P-GW) and packet data network (Packet Data Network, be called for short PDN).Below describe functions in detail:
Home subscriber server, be the permanent storage place of user contracting data, is positioned at the signing home network of user.
Mobility Management Entity, be the storage place of user contracting data in current network, be responsible for the Non-Access Stratum signaling management of terminal to network, the safety verification function of terminal, mobile management, the tracking under user's idle pulley and paging management function and the bearer management of terminal.
Serving GPRS Support Node, global system for mobile communications (Global System for Mobile Communications, referred to as GSM) enhancing data transfer rate GSM evolution (Enhanced Data Ratefor GSM Evolution, referred to as EDGE) wireless access network (GSM EDGE Radio Access Network, referred to as GERAN) and universal mobile telecommunications system (Universal Mobile Telecommunications System, referred to as UMTS) land radio access web (UMTS Terrestrial Radio Access Network, referred to as UTRAN) the business support point of user access core network network, similar with Mobility Management Entity on function, being responsible for user's position upgrades, the functions such as paging management and bearer management.
Gateway, be the gateway that core net arrives wireless system, is responsible for terminal to the user plane bearer of core net, the data buffer storage under the terminal idle pulley, function, Lawful Interception and packet routing and the forwarding capability of network side initiating business request; Gateway is responsible for the situation that the counting user terminal is used wireless network, and produces the ticket that terminal is used wireless network, sends charging gateway to.
Packet data gateway, it is the gateway of evolution system and this system external packet data network, it is connected on internet and packet data network, be responsible for the functions such as Internet protocol (Internet Protocol, referred to as IP) address assignment, billing function, grouping packet filtering and policy control of terminal.
Packet data network, be the IP operation network of operator, and this network provides the IP service by the core net of operator for the user.
Policy charging rule functional entity is the server of being responsible for providing charging control, online credit control, thresholding control and service quality (Quality of Service, referred to as QoS) tactful aspect rule in evolution system.
Wireless access network, by evolution base station (Evolved NodeB, referred to as eNB) and 3G radio network controller (Radio Network Controller, referred to as RNC) form, it mainly is responsible for the transmitting-receiving of wireless signal, by air interface and terminal contact, Radio Resource, scheduling of resource and the access control of management air interface.
Above-mentioned Serving GPRS Support Node is the SGSN upgraded, can support and gateway between the S4 interface, and and mobility management unit between adopt GPRS Tunnel Protocol version 2 (GPRS Tunneling Protocol version 2, referred to as GTPv2) to carry out intercommunication.And for the SGSN that supports the 3G core net packet switching (Packet Switching, referred to as PS) the territory network architecture and Fig. 1 different.Now SGSN adopts gn interface to be connected with MME, and intercommunication adopts GPRS Tunnel Protocol version 1(GPRS Tunneling Protocol version 1, referred to as GTPv1).SGSN can not be connected with gateway, is connected to Gateway GPRS Support Node (Gateway GPRS Support Node, referred to as GGSN) by gn interface and directly carries out the packet data network access.
When the user carries out Operational Visit, terminal can be initiated PDN(Packet Data Network, packet data network) connect process of establishing, the APN that MME/SGSN is corresponding according to the user institute use business of terminal to report selects core net gateway and anchorage gateway, sets up from the user's face passage between terminal-wireless base station-core net gateway (gateway and anchor gateway).The user accesses the business of outer/inner network by anchor gateway, when the user moves in the anchor gateway service area, business can not interrupted.Figure 2 shows that user terminal receives/send the user plane path of data.Wherein, path 1 means that the user accesses exterior I nternet network, and path 2 means that user and the user who belongs in an anchor gateway service area communicate.
As can be seen from Figure 2, the data that user terminal receives/sends all can forward by the core net anchor gateway, even if two users of intercommunication may be positioned under identical/adjacent wireless side network element mutually.At present, this data transfer mode is not optimized, and because data are all forwarded by the core net anchor point, data transfer path is longer, and then has increased the time delay of user data transmission, has reduced the resource utilization of core net.Especially after the universal development of terminal-to-terminal service business (as P2P, the game of fight class, IMS voice or video traffic etc.), the bottleneck of data route aspect can highlight more.
Therefore the concept of local intercommunication has been proposed in standardization areas, as shown in Figure 3.Mutually carry out the user of Operational Visit for being positioned under same wireless side network element (such as macro base station, Home eNodeB etc.) or adjacent wireless side network element, the routing optimality passage of setting up wireless side make the intercommunication data can by the wireless side network element directly/indirectly forward.The routing optimality passage that carries out the transmission of intercommunication data can be the routing channel of IP in IP or the dedicated tunnel of point-to-points such as GTP or GRE.Fig. 3 a is depicted as the user and is positioned at the local interworking implementation under same wireless side network element scene, and now the wireless side network element directly forwards the data of intercommunication between the user in this locality, not by the upper strata core network element, reduces resources of core network and takies.Fig. 3 b is depicted as the user and is positioned at the local interworking implementation under adjacent wireless side network element scene, and it is close that adjacent wireless side network element refers to geographical position, specifically by operator's planning, is determined.The intercommunication data are forwarded by routing optimality passage between adjacent wireless side network element, and this passage can be every equipment, can be also every carryings.Data can be based on the IP route, also can be based on the tunnel route.
For realizing local routing, need to set up the routing optimality passage between base station or base station.Prior art judges that by the anchor point of data route local intercommunication starts and the foundation of indication routing optimality passage.Fig. 4 be take scene that the user is attached to adjacent wireless side network element and has been described the implementation procedure of local intercommunication as example.
Step 401, two terminal datas of intercommunication are forwarded by anchor gateway mutually.
Step 402, anchor gateway is signing according to the user, customer location relation, type of service, local policy etc. determine whether and carry out local intercommunication.
Step 403, anchor gateway sends and starts local intercommunication signaling to the chain of command network element, and message is transmitted to the wireless side network element by the chain of command network element.Message comprises the opposite end wireless side net element information of intercommunication, and the data routing policy that carries out intercommunication, for carrying the TFT(Traffic Flow Template of encapsulation, transmission stream template) etc. information.
Step 404, the wireless side network element is according to setting up the route optimization passage between the wireless side network element to client information, and this passage can be the IP routing channel, can be also the dedicated tunnel such as GTP or GRE or PMIP.Can be based on the path of every equipment, also can be based on the path of every carrying.
Step 405, after the routing optimality Path Setup completes, the intercommunication data can forward between the wireless side network element.The wireless side network element adopts the data routing policy that the data for intercommunication in upstream data are forwarded by path optimizing, and opposite end wireless side network element adopts TFT information for the radio bearer coupling.
After the local intercommunication of having set up between the user, if switching has occurred the user, need so to determine new base station and whether still can maintain local intercommunication to end subscriber between accompanying base station.Based on the described local intercommunication process of establishing of Fig. 4, anchor gateway need to be judged local intercommunication again.By analysis, find, anchor gateway need to be after switching completes the bearer update process time just can obtain the base station information that the user newly adheres to, the information such as that is to say after switching completes just can be signing according to the user, customer location relation, type of service, local policy judge whether local intercommunication can maintain/discharge, rebuild new routing optimality passage or discharge original routing optimality passage by notify newly/old base station of notification message and base station, opposite end after judging end.
Again the judgement of the local intercommunication under above-mentioned handoff scenario is more late opportunity, and dependence core network control surface signaling wireless side network element is carried out maintain/releasing operation of local intercommunication.Because user's mobile behavior is uncontrolled, intercommunication is judged has increased signaling traffic load concerning the mobile network.On the one hand, because local intercommunication can not be judged in time according to user's situation of movement, can cause the Operation delay on local interworking implementation in addition, partial data may also forward by core net in the certain hour section.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of implementation method and network element device of local intercommunication, solves in prior art when terminal switches in local intercommunication situation local intercommunication passage is processed to irrational problem.
In order to solve the problems of the technologies described above, the invention provides a kind of implementation method of local intercommunication, wherein, under the wireless side network element of source, use the terminal of local IWF need be switched to Target Wireless side network element, described source wireless side network element judges when described terminal can maintain local IWF on described Target Wireless side network element, and this locality is exchanged information to notice to described Target Wireless side network element; The local intercommunication opposite end wireless side network element of described Target Wireless side network element and described terminal exchanges information and sets up local intercommunication routing optimality passage according to described this locality.
Further, said method can also have following characteristics:
Described this locality exchanges information and comprises: the address of described local intercommunication opposite end wireless side network element, by described routing optimality passage carry out the terminal of local intercommunication information, the carrying match information.
Further, said method can also have following characteristics:
Described source wireless side network element is a kind of in following mode by this locality of described local intercommunication route optimization passage notice to mode of described Target Wireless side network element that exchanges information:
Described source wireless side network element exchanges information described this locality to be sent to described Target Wireless side network element;
The chain of command network element that described source wireless side network element exchanges information described this locality to be sent to described terminal, described chain of command network element exchanges information described this locality to be sent to described Target Wireless side network element;
The source chain of command network element that described source wireless side network element exchanges information described this locality to be sent to described terminal, the target control veil unit that described source chain of command network element exchanges information described this locality to be sent to described terminal, described target control veil unit exchanges information described this locality to be sent to described Target Wireless side network element.
Further, said method can also have following characteristics:
Described source wireless side network element judges when described terminal can not maintain local IWF on described Target Wireless side network element, the local intercommunication routing optimality passage of having set up between release and local intercommunication opposite end wireless side network element.
Further, said method can also have following characteristics:
Described source wireless side network element judges when described terminal can not maintain local IWF on described Target Wireless side network element, the local intercommunication binding information between the local intercommunication opposite end of notifying anchor gateway to discharge described terminal and described terminal.
Further, said method can also have following characteristics:
The mode that described source wireless side network element notice anchor gateway discharges the local intercommunication binding information between the local intercommunication opposite end of described terminal and described terminal is a kind of in following mode:
Described source wireless side network element sends and discharges indication to described Target Wireless side network element, and described Target Wireless side network element sends described release indication to the chain of command network element of described terminal, and the chain of command network element of described terminal sends described release indication to described anchor gateway;
Described source wireless side network element sends described release indication to the chain of command network element of described terminal, and the chain of command network element of described terminal sends described release indication to described anchor gateway;
Described source wireless side network element sends described release indication to the chain of command network element of described terminal, the chain of command network element of described terminal sends described release indication to the chain of command network element of the local intercommunication opposite end of described terminal, and the chain of command network element of the local intercommunication opposite end of described terminal sends described release indication to described anchor gateway.
In order to solve the problems of the technologies described above, the present invention also provides a kind of network element device of local intercommunication, and wherein, described network element device comprises judging unit, transmitting element, receiving element, local intercommunication processing unit;
Described judging unit, used the terminal of local IWF whether to need to be switched to Target Wireless side network element for judging under this network element device, also for judging whether described terminal can maintain local IWF on described Target Wireless side network element;
Described transmitting element, when judging under this network element device that at described judging unit the terminal of using local IWF need be switched to Target Wireless side network element and described terminal can maintain local IWF on described Target Wireless side network element, to described Target Wireless side network element notice this locality, exchange information;
Described receiving element, exchange information for this locality that receives other network element device transmission;
Described local intercommunication processing unit, receive for described receiving element that this locality exchanges information and according to described this locality, exchange information and set up local intercommunication routing optimality passage with respective objects wireless side network element afterwards.
Further, said network element equipment can also have following characteristics:
Described this locality exchanges information and comprises: the address of described local intercommunication opposite end wireless side network element, by described routing optimality passage carry out the terminal of local intercommunication information, the carrying match information.
Further, said network element equipment can also have following characteristics:
Described local intercommunication processing unit, also when judging that at described judging unit described terminal can not maintain local IWF on described Target Wireless side network element, discharge and local intercommunication opposite end wireless side network element between the local intercommunication routing optimality passage set up.
Further, said network element equipment can also have following characteristics:
Described local intercommunication processing unit, also when judging that at described judging unit described terminal can not maintain local IWF on described Target Wireless side network element, discharge the local intercommunication binding information between the local intercommunication opposite end of described terminal and described terminal to the anchor gateway notice.
This programme can solve in local intercommunication situation when terminal switches local intercommunication passage is processed to irrational problem, guarantee the smooth foundation of local intercommunication passage new in terminal switching process and the timely release of old local intercommunication passage, save network signal simultaneously, effectively prevent the Operation delay on local interworking implementation.
The accompanying drawing explanation
The structural representation that Fig. 1 is the evolution grouping domain system;
Fig. 2 accepts/sends the data path schematic diagram for the user;
Fig. 3 a and Fig. 3 b are local interworking implementation schematic diagram;
The mode of setting up that Fig. 4 is known local intercommunication;
The schematic diagram that Fig. 5 is execution mode one in embodiment;
The schematic diagram that Fig. 6 is execution mode two in embodiment;
The schematic diagram that Fig. 7 is execution mode three in embodiment;
Fig. 8 is the schematic diagram that in embodiment, anchor gateway is known the execution mode one that local intercommunication discharges;
Fig. 9 is the schematic diagram that in embodiment, anchor gateway is known the execution mode two that local intercommunication discharges;
Figure 10 is the schematic diagram that in embodiment, anchor gateway is known the execution mode three that local intercommunication discharges.
Embodiment
The implementation method of local intercommunication comprises: under the wireless side network element of source, use the terminal of local IWF need be switched to Target Wireless side network element, described source wireless side network element judges when described terminal can maintain local IWF on described Target Wireless side network element, and this locality is exchanged information to notice to described Target Wireless side network element; The local intercommunication opposite end wireless side network element of described Target Wireless side network element and described terminal exchanges information and sets up local intercommunication routing optimality passage according to described this locality.
Described this locality exchanges information and comprises: the address of described local intercommunication opposite end wireless side network element, by described routing optimality passage carry out the terminal of local intercommunication information, the carrying match information.
Described source wireless side network element is a kind of in following mode by this locality of described local intercommunication route optimization passage notice to mode of described Target Wireless side network element that exchanges information:
One, described source wireless side network element exchanges information described this locality to be sent to described Target Wireless side network element;
Two, the chain of command network element that described source wireless side network element exchanges information described this locality to be sent to described terminal, described chain of command network element exchanges information described this locality to be sent to described Target Wireless side network element;
Three, the source chain of command network element that described source wireless side network element exchanges information described this locality to be sent to described terminal, the target control veil unit that described source chain of command network element exchanges information described this locality to be sent to described terminal, described target control veil unit exchanges information described this locality to be sent to described Target Wireless side network element.
Described source wireless side network element judges when described terminal can not maintain local IWF on described Target Wireless side network element, the local intercommunication routing optimality passage of having set up between release and local intercommunication opposite end wireless side network element.
Described source wireless side network element judges when described terminal can not maintain local IWF on described Target Wireless side network element, the local intercommunication binding information between the local intercommunication opposite end of notifying anchor gateway to discharge described terminal and described terminal.The mode that described source wireless side network element notice anchor gateway discharges the local intercommunication binding information between the local intercommunication opposite end of described terminal and described terminal is a kind of in following mode:
One, described source wireless side network element sends and discharges indication to described Target Wireless side network element, described Target Wireless side network element sends described release indication to the chain of command network element of described terminal, and the chain of command network element of described terminal sends described release indication to described anchor gateway;
Two, described source wireless side network element sends described release indication to the chain of command network element of described terminal, and the chain of command network element of described terminal sends described release indication to described anchor gateway;
Three, described source wireless side network element sends described release indication to the chain of command network element of described terminal, the chain of command network element of described terminal sends described release indication to the chain of command network element of the local intercommunication opposite end of described terminal, and the chain of command network element of the local intercommunication opposite end of described terminal sends described release indication to described anchor gateway.
The network element device of the local intercommunication in this programme, comprise judging unit, transmitting element, receiving element, local intercommunication processing unit.
Described judging unit, used the terminal of local IWF whether to need to be switched to Target Wireless side network element for judging under this network element device, also for judging whether described terminal can maintain local IWF on described Target Wireless side network element;
Described transmitting element, when judging under this network element device that at described judging unit the terminal of using local IWF need be switched to Target Wireless side network element and described terminal can maintain local IWF on described Target Wireless side network element, to described Target Wireless side network element notice this locality, exchange information;
Described receiving element, exchange information for this locality that receives other network element device transmission;
Described local intercommunication processing unit, receive for described receiving element that this locality exchanges information and according to described this locality, exchange information and set up local intercommunication routing optimality passage with respective objects wireless side network element afterwards.
Described this locality exchanges information and comprises: the address of described local intercommunication opposite end wireless side network element, by described routing optimality passage carry out the terminal of local intercommunication information, the carrying match information.
Described local intercommunication processing unit, also when judging that at described judging unit described terminal can not maintain local IWF on described Target Wireless side network element, discharge and local intercommunication opposite end wireless side network element between the local intercommunication routing optimality passage set up.
Described local intercommunication processing unit, also when judging that at described judging unit described terminal can not maintain local IWF on described Target Wireless side network element, discharge the local intercommunication binding information between the local intercommunication opposite end of described terminal and described terminal to the anchor gateway notice.
Fig. 5 is embodiment of the present invention one, specifically comprises the steps:
Step 501, terminal 1 reporting measurement reports, report the information such as adjacent wireless side network element ID, signal strength signal intensity.
Step 502, the measurement report that the wireless side network element 1 that terminal 1 is adhered to reports according to terminal 1 finds that discomfort is combined into its service, selects the Target Wireless side network element that signal is strong to prepare to initiate switching.If wireless side network element 1 has started the local IWF of terminal 1, need so to judge again whether terminal 1 can continue to maintain local intercommunication on Target Wireless side network element.
Whether the geographical position of the wireless side network element 2 that the position that particularly, wireless side network element 1 can comparison object wireless side network element 1 and local intercommunication distant terminal 2 are accompanying is close.Due to the foundation of local intercommunication the information such as, type of service signing according to the user by anchor gateway, local policy judged.Therefore wireless side network element 1 does not need the judgement of the aspects such as local intercommunication to having enabled is contracted, type of service, has only needed the judgement again of topology location to get final product.
If judge and can continue to maintain local intercommunication, perform step so 503 ~ 506.
If judge and can not maintain local intercommunication, perform step so 507 ~ 510.
Step 503, source wireless side network element 1 sends handover request message to Target Wireless side network element 1, carry this locality in message and exchange information, wherein this locality exchanges information and comprises: the information such as intercommunication opposite end wireless side network element address, intercommunication user ID/address, carrying coupling (such as the bearing identification of TFT, correspondence).
Step 504, Target Wireless side network element 1 is replied switching response message.
Step 505, Target Wireless side network element 1 sends local intercommunication and sets up request message according to this locality of receiving (terminal 2) accompanying wireless side network element 2 that exchanges information to the intercommunication opposite end, and message comprises the user profile of intercommunication, new wireless side network element address.Wireless side network element 2 is according to the information updating routing optimality passage of receiving.This message can send by the chain of command interface between the wireless side network element, also can adopt the form of special data package to send (newly defining the packet header of the packet of pass-along message) by user's face passage.
Step 506, wireless side network element 2 is replied local intercommunication and is set up response message.
It should be noted that, the local intercommunication updating maintenance process between Target Wireless side network element 1 and wireless side network element 2 does not affect normal switching flow, and the present invention does not limit the sequencing of 506 steps and 511 steps.
Step 507, source wireless side network element 1 sends handover request message to Target Wireless side network element 1, starts handoff procedure.
Step 508, Target Wireless side network element 1 completes the reserved rear switching response message of replying of Radio Resource.
Step 509, can not continue to maintain local intercommunication if source wireless side network element 1 is judged between Target Wireless side network element 1 and wireless side network element 2, to wireless side network element 2, sends local intercommunication releasing request message, deletes the local intercommunication routing optimality passage of having set up.This message can send by the chain of command interface between the wireless side network element, also can adopt the form of special data package to send (newly defining the packet header of the packet of pass-along message) by user's face passage.
Step 510, wireless side network element 2 is replied local intercommunication and is discharged response message.
It should be noted that, the local intercommunication dispose procedure between source wireless side network element 1 and wireless side network element 2 does not affect normal switching flow.The present invention does not limit the sequencing of 507 steps and 509 steps.
Step 511, after terminal 1 is synchronized to Target Wireless side network element 1, to chain of command network element transmit path handover request message, show that the user has been switched on Target Wireless side network element 1.
Step 512, the chain of command network element sends the bearing modification request message, and new wireless side network element ID information is sent to anchor gateway.If disposed gateway between chain of command network element and anchor gateway, this message will be forwarded by gateway so.
Step 513, anchor gateway is returned to the bearing modification response message.
Step 514, the chain of command network element is to Target Wireless side network element 1 reverse-path switching response message.
Fig. 6 is embodiment of the present invention two, specifically comprises the steps:
Step 601, terminal 1 reporting measurement reports, report the information such as adjacent wireless side network element ID, signal strength signal intensity.
Step 602, the measurement report that the wireless side network element 1 that terminal 1 is adhered to reports according to terminal 1 finds that discomfort is combined into its service, selects the Target Wireless side network element that signal is strong to prepare to initiate switching.If wireless side network element 1 has started the local IWF of terminal 1, need so to judge again whether terminal 1 can continue to maintain local intercommunication on Target Wireless side network element.
Whether the geographical position of the wireless side network element 2 that the position that particularly, wireless side network element 1 can comparison object wireless side network element 1 and local intercommunication distant terminal 2 are accompanying is close.Due to the foundation of local intercommunication the information such as, type of service signing according to the user by anchor gateway, local policy judged.Therefore wireless side network element 1 does not need the judgement of the aspects such as local intercommunication to having enabled is contracted, type of service, has only needed the judgement again of topology location to get final product.
If judge and can continue to maintain local intercommunication, perform step so 603 ~ 608.
If judge and can not maintain local intercommunication, perform step so 609 ~ 614.
Step 603, source wireless side network element 1 sends handover request message to the chain of command network element, carry this locality in message and exchange information, wherein this locality exchanges information and comprises: the information such as intercommunication opposite end wireless side network element address, intercommunication user ID/address, carrying coupling (such as the bearing identification of TFT, correspondence).
Step 604, the chain of command network element sends handover request message to Target Wireless side network element 1, carries this locality in message and exchanges information.
Step 605, Target Wireless side network element 1 is replied switch acknowledgment message to the chain of command network element, shows that the wireless side resource reservation is complete.
Step 606, chain of command network element notification source wireless side network element 1 is initiated user's switching, and the user can be synchronized on Target Wireless side network element.
Step 607, Target Wireless side network element 1 sends local intercommunication and sets up request message according to this locality of receiving (terminal 2) accompanying wireless side network element 2 that exchanges information to the intercommunication opposite end, and message comprises the user profile of intercommunication, new wireless side network element address.Wireless side network element 2 is according to the information updating routing optimality passage of receiving.This message can send by the chain of command interface between the wireless side network element, also can adopt the form of special data package to send (newly defining the packet header of the packet of pass-along message) by user's face passage.
Step 608, wireless side network element 2 is replied local intercommunication and is set up response message.
It should be noted that, the local intercommunication updating maintenance process between Target Wireless side network element 1 and wireless side network element 2 does not affect normal switching flow, and the present invention does not limit the sequencing of 605 steps and 607 steps.
Step 609, source wireless side network element 1 sends handover request message to the chain of command network element, starts handoff procedure.
Step 610, the chain of command network element sends handover request message to Target Wireless side network element 1.
Step 611, Target Wireless side network element 1 is replied switch acknowledgment message to the chain of command network element, shows that the wireless side resource reservation is complete.
Step 612, chain of command network element notification source wireless side network element 1 is initiated user's switching, and the user can be synchronized on target BS.
Step 613, can not continue to maintain local intercommunication if source wireless side network element 1 is judged between Target Wireless side network element 1 and wireless side network element 2, to wireless side network element 2, sends local intercommunication releasing request message, deletes the local intercommunication routing optimality passage of having set up.This message can send by the chain of command interface between the wireless side network element, also can adopt the form of special data package to send (newly defining the packet header of the packet of pass-along message) by user's face passage.
Step 614, wireless side network element 2 is replied local intercommunication and is discharged response message.
It should be noted that, the local intercommunication dispose procedure between source wireless side network element 1 and wireless side network element 2 does not affect normal switching flow.The present invention does not limit the sequencing of 609 steps and 613 steps.
Step 615, after terminal 1 is synchronized on Target Wireless side network element 1, Target Wireless side network element 1 sends handoff notification message to the chain of command network element.
Step 616, the chain of command network element, by the bearing modification request message, sends to anchor gateway by new wireless side network element ID information.If disposed gateway between chain of command network element and anchor gateway, this message will be forwarded by gateway so.
Step 617, anchor gateway is returned to the bearing modification response message.
Fig. 7 is embodiment of the present invention three, specifically comprises the steps:
In Fig. 6, the chain of command network element of serving for terminal 1 is identical, and also having in actual applications the chain of command network element of serving for terminal 1 after switching is different situations, and under this kind of scene, inventive point of the present invention stands good.Different is that this locality exchanges information and need to carry in the message (as forwarded re-positioning request) between two chain of command network elements, as described in step 703 ~ 708.Other step is identical with Fig. 6, at this, does not do and repeats.
In above-mentioned execution mode one, two, three, if the wireless side network element determines to discharge the routing optimality passage of local intercommunication, anchor gateway need to be known this point so, because on anchor gateway, required binding relationship information is set up in store local intercommunication user and local intercommunication.The present invention has provided the explicit execution mode of knowing that local intercommunication discharges of the optional use of anchor gateway.
Fig. 8 is that anchor gateway of the present invention knows that local intercommunication discharges execution mode one, specifically comprises the steps:
Step 801, terminal 1 reporting measurement reports, report the information such as adjacent wireless side network element ID, signal strength signal intensity.
Step 802, the measurement report that the wireless side network element 1 that terminal 1 is adhered to reports according to terminal 1 finds that discomfort is combined into its service, selects the Target Wireless side network element that signal is strong to prepare to initiate switching.If wireless side network element 1 has started the local IWF of terminal 1, need so to judge again whether terminal 1 can continue to maintain local intercommunication on Target Wireless side network element.
If can not maintain local intercommunication, carry out following steps.
Step 803, source wireless side network element 1 sends handover request to Target Wireless side network element 1, carries local intercommunication in message and discharges indication.Local intercommunication discharges two end messages that indication comprises intercommunication, as sign or IP address.
Step 804, Target Wireless side network element 1 is replied switching response message.
Step 805, can not continue to maintain local intercommunication if source wireless side network element 1 is judged between Target Wireless side network element 1 and wireless side network element 2, to wireless side network element 2, sends local intercommunication releasing request message, deletes the local intercommunication routing optimality passage of having set up.
Step 806, wireless side network element 2 is replied local intercommunication and is discharged response message.
Step 807, after terminal 1 is synchronized to Target Wireless side network element 1, to chain of command network element transmit path handover request message, show that the user has been switched on Target Wireless side network element 1.Carry local intercommunication in message and discharge indication.
Step 808, the chain of command network element sends the bearing modification request message, carries local intercommunication in message and discharges indication.If disposed gateway between chain of command network element and anchor gateway, this message will be forwarded by gateway so.After anchor gateway receives that local intercommunication discharges indication, the terminal 1 that release has been set up and the local intercommunication binding information between terminal 2.
Step 809, anchor gateway is returned to the bearing modification response message.
Step 810, the chain of command network element is to Target Wireless side network element 1 reverse-path switching response message.
Fig. 9 is that anchor gateway of the present invention knows that local intercommunication discharges execution mode two, specifically comprises the steps:
Step 901, terminal 1 reporting measurement reports, report the information such as adjacent wireless side network element ID, signal strength signal intensity.
Step 902, the measurement report that the wireless side network element 1 that terminal 1 is adhered to reports according to terminal 1 finds that discomfort is combined into its service, selects the Target Wireless side network element that signal is strong to prepare to initiate switching.If wireless side network element 1 has started the local IWF of terminal 1, need so to judge again whether terminal 1 can continue to maintain local intercommunication on Target Wireless side network element.
If judge local intercommunication for it carry out following steps.
Step 903, source wireless side network element 1 sends handover request message to the chain of command network element, carries local intercommunication in message and discharges indication.Local intercommunication discharges two end messages that indication comprises intercommunication, as sign or IP address.
Step 904, the chain of command network element sends handover request message to Target Wireless side network element 1.
Step 905, Target Wireless side network element 1 is replied switch acknowledgment message to the chain of command network element, shows that the wireless side resource reservation is complete.
Step 906, chain of command network element notification source wireless side network element 1 is initiated user's switching, and the user can be synchronized on Target Wireless side network element.
Step 907, can not continue to maintain local intercommunication if source wireless side network element 1 is judged between Target Wireless side network element 1 and wireless side network element 2, to wireless side network element 2, sends local intercommunication releasing request message, deletes the local intercommunication routing optimality passage of having set up.
Step 908, wireless side network element 2 is replied local intercommunication and is discharged response message.
Step 909, after terminal 1 is synchronized on Target Wireless side network element 1, Target Wireless side network element 1 sends handoff notification message to the chain of command network element.
Step 910, the chain of command network element, by the bearing modification request message, discharges the indication notice to anchor gateway by local intercommunication.If disposed gateway between chain of command network element and anchor gateway, this message will be forwarded by gateway so.After anchor gateway receives that local intercommunication discharges indication, the terminal 1 that release has been set up and the local intercommunication binding information between terminal 2.
Step 911, anchor gateway is replied the bearing modification response message to the chain of command network element.
Figure 10 is that anchor gateway of the present invention knows that local intercommunication discharges execution mode three, Figure 10 is identical with the chain of command network element for terminal 1 service in Fig. 9, also having in actual applications the chain of command network element of serving for terminal 1 after switching is different situations, under this kind of scene, inventive point of the present invention stands good, different is that local intercommunication release indication need to be carried in the message (as forwarded re-positioning request) between two chain of command network elements, as described in step 1003, step 1004, other step is identical with Fig. 9, at this, does not do and repeats.
It should be noted that, in the situation that do not conflict, the embodiment in the application and the feature in embodiment be combination in any mutually.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in said method can come the instruction related hardware to complete by program, described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (10)
1. the implementation method of a local intercommunication, wherein,
Under the wireless side network element of source, use the terminal of local IWF need be switched to Target Wireless side network element, described source wireless side network element judges when described terminal can maintain local IWF on described Target Wireless side network element, and this locality is exchanged information to notice to described Target Wireless side network element; The local intercommunication opposite end wireless side network element of described Target Wireless side network element and described terminal exchanges information and sets up local intercommunication routing optimality passage according to described this locality.
2. the method for claim 1, is characterized in that,
Described this locality exchanges information and comprises: the address of described local intercommunication opposite end wireless side network element, by described routing optimality passage carry out the terminal of local intercommunication information, the carrying match information.
3. the method for claim 1, is characterized in that,
Described source wireless side network element is a kind of in following mode by this locality of described local intercommunication route optimization passage notice to mode of described Target Wireless side network element that exchanges information:
Described source wireless side network element exchanges information described this locality to be sent to described Target Wireless side network element;
The chain of command network element that described source wireless side network element exchanges information described this locality to be sent to described terminal, described chain of command network element exchanges information described this locality to be sent to described Target Wireless side network element;
The source chain of command network element that described source wireless side network element exchanges information described this locality to be sent to described terminal, the target control veil unit that described source chain of command network element exchanges information described this locality to be sent to described terminal, described target control veil unit exchanges information described this locality to be sent to described Target Wireless side network element.
4. the method for claim 1, is characterized in that,
Described source wireless side network element judges when described terminal can not maintain local IWF on described Target Wireless side network element, the local intercommunication routing optimality passage of having set up between release and local intercommunication opposite end wireless side network element.
5. the method for claim 1, is characterized in that,
Described source wireless side network element judges when described terminal can not maintain local IWF on described Target Wireless side network element, the local intercommunication binding information between the local intercommunication opposite end of notifying anchor gateway to discharge described terminal and described terminal.
6. method as claimed in claim 5, is characterized in that,
The mode that described source wireless side network element notice anchor gateway discharges the local intercommunication binding information between the local intercommunication opposite end of described terminal and described terminal is a kind of in following mode:
Described source wireless side network element sends and discharges indication to described Target Wireless side network element, and described Target Wireless side network element sends described release indication to the chain of command network element of described terminal, and the chain of command network element of described terminal sends described release indication to described anchor gateway;
Described source wireless side network element sends described release indication to the chain of command network element of described terminal, and the chain of command network element of described terminal sends described release indication to described anchor gateway;
Described source wireless side network element sends described release indication to the chain of command network element of described terminal, the chain of command network element of described terminal sends described release indication to the chain of command network element of the local intercommunication opposite end of described terminal, and the chain of command network element of the local intercommunication opposite end of described terminal sends described release indication to described anchor gateway.
7. the network element device of a local intercommunication, wherein,
Described network element device comprises judging unit, transmitting element, receiving element, local intercommunication processing unit;
Described judging unit, used the terminal of local IWF whether to need to be switched to Target Wireless side network element for judging under this network element device, also for judging whether described terminal can maintain local IWF on described Target Wireless side network element;
Described transmitting element, when judging under this network element device that at described judging unit the terminal of using local IWF need be switched to Target Wireless side network element and described terminal can maintain local IWF on described Target Wireless side network element, to described Target Wireless side network element notice this locality, exchange information;
Described receiving element, exchange information for this locality that receives other network element device transmission;
Described local intercommunication processing unit, receive for described receiving element that this locality exchanges information and according to described this locality, exchange information and set up local intercommunication routing optimality passage with respective objects wireless side network element afterwards.
8. network element device as claimed in claim 7, is characterized in that,
Described this locality exchanges information and comprises: the address of described local intercommunication opposite end wireless side network element, by described routing optimality passage carry out the terminal of local intercommunication information, the carrying match information.
9. network element device as claimed in claim 7, is characterized in that,
Described local intercommunication processing unit, also when judging that at described judging unit described terminal can not maintain local IWF on described Target Wireless side network element, discharge and local intercommunication opposite end wireless side network element between the local intercommunication routing optimality passage set up.
10. network element device as claimed in claim 7, is characterized in that,
Described local intercommunication processing unit, also when judging that at described judging unit described terminal can not maintain local IWF on described Target Wireless side network element, discharge the local intercommunication binding information between the local intercommunication opposite end of described terminal and described terminal to the anchor gateway notice.
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| CN201210191820.4A CN103491584A (en) | 2012-06-12 | 2012-06-12 | Method for achieving local intercommunication and network cell equipment |
| PCT/CN2013/076522 WO2013185542A1 (en) | 2012-06-12 | 2013-05-31 | An implementation method and a network element device for local intercommunication |
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