CN1968252A - Media-independent link switching method and apparatus - Google Patents
Media-independent link switching method and apparatus Download PDFInfo
- Publication number
- CN1968252A CN1968252A CNA200610090348XA CN200610090348A CN1968252A CN 1968252 A CN1968252 A CN 1968252A CN A200610090348X A CNA200610090348X A CN A200610090348XA CN 200610090348 A CN200610090348 A CN 200610090348A CN 1968252 A CN1968252 A CN 1968252A
- Authority
- CN
- China
- Prior art keywords
- link
- request
- local
- media
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/005—Control or signalling for completing the hand-off involving radio access media independent information, e.g. MIH [Media independent Hand-off]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a chain switch method irrelative to media and relative device, wherein said method comprises that: local MIH user layer sends switch request to local MIHF; said switch request means to switch conversation from present network chain to target network chain; when receiving said switch request, the local MIHF sends the chain connection request command with target network new chain mark parameter to the local chain layer; building the connection between local chain layer and target network chain layer. The invention can switch the chains irrelative to media.
Description
Technical field
The present invention relates to a kind of communication means and device, particularly relate to a kind of link switch-over method and device of media-independent.
Background technology
Under existing wireless communication technology condition, the mobile subscriber can't be under different wireless access technologys, as roaming between the heterogeneous systems such as IEEE 802.3/802.11/802.16/3GPP/3GPP2 and switching.For solving the roaming switching problem of mobile subscriber between heterogeneous system, the wireless working groups of 2003 IEEE 802 in the end of the year set up IEEE 802.21 working groups, responsible formulation is used for the public switching framework of wired and wireless IEEE 802 standards (as IEEE 802.3/11/16) and 3G standard, requirement that standard is switched between various criterion and corresponding handover mechanism.
Wherein, IEEE 802.21 is about MIH (Media Independent Handover, the switching of media-independent) purpose of standard development is to provide the handoff procedure between the dissimilar medium, by supporting the switching between the dissimilar medium to strengthen the experience of user to mobile device, target is finally to make mobile device can select the most handy network connection type and seamless switching speech channel automatically when internetwork roaming, and need not user intervention.
At the switching of IEEE 802.21 media-independents, prior art has been introduced a kind of successional framework of professional switching between the dissimilar medium of attempting to realize.Described switching generally is based on the measurement of terminal links layer and triggering, and these measurements comprise signal quality, transmission error code and type of service etc.Be seamlessness and the continuity that realizes this switching, one group of handoff functionality collection is provided between network element.These handoff functionality collection of configuration have just formed a new protocol layer in the mobility management protocol stack of network element, are referred to as the MIH protocol layer.
Fig. 1 has shown the Service Access point between MIH generalized reference model and MIH layer and the upper and lower layer.In MIH generalized reference model, comprise three layers, be respectively MIH client layer (upper strata) 10, MIH layer 20 and link layer (lower floor) 30.Wherein, MIH client layer 20 is mobile management and the application protocols that belong to layer three, comprises mobility management protocol and switchover policy, transmission and application etc. such as MIPv4/v6, SIP, 3GPP UL.MIH layer 20 provides the media independent handoff protocol layer of command service, Event Service and information service.Link layer 30 is 802.3,802.11,802.16 and the link layer of various access networks such as 3GPP.
Wherein, MIH layer 20 protocol stack provide following service:
One, MIH Event Service (MIH-ES): event classification, event filtering and event report about the dynamic change incident of link characteristics, Link State and link-quality are provided.
Two, MIH command service (MIH-CS): provide MIH user management and control the link behavior relevant with switching and mobility.
Three, MIH information service (MIH-IS): feature and professional details that service network and ambient network are provided.These information are used for the efficient system access and switch decision.
The major function of MIH layer 20 is exactly to provide handoff functionality with media-independent by Event Service, command service and information service, and this independence is to provide unified interface to realize by the lower-layer protocols in the mobility management protocol stack to the upper strata.IEEE 802.21 standards propose a general protocol layer as far as possible, so that the processing of upper-layer protocol does not rely on the concrete feature and the characteristic of terminal and wireless network.
The incident of MIH agreement is divided into MIH incident and link event, and the order of MIH agreement is divided into MIH order and link command.These incidents and order are corresponding to the service primitive of MIH_SAP and MIH_LINK_SAP Service Access point.The incident of MIH and order have the branch of local and far-end again, local event and order are to transmit between MIH and levels, be to realize by service primitive, far-end incident and order are to transmit between the peer layer of MIH, are to realize by MIH message.By these MIH primitive in the transmission of interlayer and MIH message at MIHF (Media Independent Handover Function, the handover (mih) functions of media-independent) transmission between 21 peer layers just can realize that network from a kind of medium type is to the switching the network of another kind of medium type.
In the draft agreement of existing IEEE 802.21, defined the MIH order primitive that client layer notice MIH layer carries out link switchover:
MIH_Switch.request(
SourceIdentifier，
DestinationIdentifier，
HandoverMode，
NewLinkIdentifier，
OldLinkIdentifier，
OldLinkActions
)
This primitive is to be produced by the upper-layer user, be used for the session that will activate from a link switchover to another link.After upper layer entity is made handover decisions, upper layer entity can send session that MIH Switch order will activate from a link switchover to another link.The MIH functional entity receives and can use after this order one group of link command to gather to carry out MIH Switch order.Such as; the MIH functional entity can use the LinkConnect order to set up new link connection; use Link Disconnect to order and remove original link connection; perhaps use Link Sleep order that original link is placed sleep pattern, perhaps use LinkPower Down order that link is placed stopped status.
Existing IEEE 802.21 agreements have only defined the order MIH Switch that the upper-layer user notifies the MIH layer to carry out link switchover, but after not defining MIHF and receiving this order, how to proceed to the connection of objective network, after the definition switching is not finished, how to remove connection yet.Though in the relevant message of a plurality of switchings, all define the operation of an OldLinkAction parameter indication at present: Link Disconnect, Link Sleep etc. to original link, but these message all are with this parameter real unnecessary, and the problem on bringing synchronously easily causes that operation is chaotic.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method of link switchover of complete realization media-independent.
The technical problem to be solved in the present invention is the link switching device that a kind of complete realization media-independent also is provided.
For solving above-mentioned first technical problem, the objective of the invention is to be achieved through the following technical solutions: the link switch-over method that a kind of media-independent is provided, comprise step: local MIH client layer sends a handover request to local MIHF, and described handoff request is the order from the current network link switchover to the objective network link with session; Described local MIHF sends the link connection request order that comprises the new link identifier parameter of objective network and arrives the link-local layer; Set up the connection between described link-local layer and the objective network link layer.
The order of described link connection request be definition be used to set up new link-attached request primitive, described new link identifier parametric representation: the MAC Address of the new Linktype that connect, mobile node MAC Address and POA.
Further comprise step after connecting: local MIHF sends and removes the link-local layer of former link-attached link dismounting request command to former network.
The request command that described link is removed is the request primitive that link is removed that is used for of definition, comprises former link identifier parameter, indicates to remove the MAC Address of Linktype, mobile node MAC Address and the POA of connection.
Further comprise step after sending link dismounting request command: local MIHF receives link dismounting response message; When this response message indication was removed successfully, local MIHF sent the MIH switching and finishes response message to objective network MIHF; Described objective network MIHF receives described switching and finishes and send MIH behind the response message and switch and finish acknowledge message to the objective network client layer, and indication is switched and finished; Local MIHF sends the MIH handover request ack message of described switching command and finishes to local user's layer indication switching.
It is being used to of defining to indicate link layer to remove the response primitive of mobile node to the connection of network that described link is removed response message, comprises the result's of expression link dismounting parameter.
After link-local layer return link connection response message, carry out the step of the request command of described transmission link dismounting.
Described link connection response message is the response primitive that is used to confirm the link establishment result of definition, comprises to stop setting up link and connect or carry out and set up link-attached designator.
Connect when setting up when objective network detects, former network is forwarded to objective network with data in buffer in the handoff procedure.
When the initialization that current network and objective network all switch, carry out the step that described local MIH client layer sends a handover request to local MIHF.
For solving above-mentioned second technical problem, the objective of the invention is to be achieved through the following technical solutions: the link switchover device that a kind of media-independent is provided, comprise the handoff request sending module, module is set up in link connection request order sending module and connection, described handoff request sending module is used to indicate local MIH client layer to send a handover request to local MIHF, described handoff request is the order from the current network link switchover to the objective network link with session, the link connection request order that described link connection request order sending module is used to indicate described local MIHF to send to comprise the new link identifier parameter of objective network is to the link-local layer, and described connection is set up module and is used to set up connection between described link-local layer and the objective network link layer.
The order of described link connection request be definition be used to set up new link-attached request primitive, described new link identifier parametric representation: the MAC Address of the new Linktype that connect, mobile node MAC Address and POA.
Further comprise connecting and remove the order sending module, the request command that is used to indicate local MIHF to send the link dismounting is to former network link layer.
The request command that described link is removed is the request primitive that link is removed that is used for of definition, comprises former link identifier parameter, and it indicates to remove the MAC Address of Linktype, mobile node MAC Address and the POA of connection.
Described connection is removed the order sending module when link-local layer return link connection response message, carries out the operation that described indication sends order.
Described link connection response message is the response primitive that is used to confirm the link establishment result of definition, comprises to stop setting up link and connect or carry out and set up link-attached designator.
Further comprise data cached forwarding module, be used for indicating former network that the handoff procedure data in buffer is forwarded to objective network when setting up when objective network detects to connect.
More than first technical scheme as can be seen, relatively prior art does not define the MIH layer and carries out the link switchover order and cause the link switchover can not be successfully or cause the technical problem of confusion easily, because the present invention clearly defines and closely-related two orders of link switchover: be used to set up new link-attached link bind command, be used to remove original link-attached link and remove order.Like this,, realize complete media-independent link switchover flow process together, can not cause confusion together with the order MIH Switch that the upper-layer user notifies the MIH layer to carry out link switchover.
More than second technical scheme as can be seen because the present invention clearly defines and closely-related two orders of link switchover: be used to set up new link-attached link bind command, be used to remove original link-attached link and remove order.When receiving upper-layer user's switching command, the link connection request order of adopting link connection request order sending module to indicate local MIHF to send to comprise objective network link and POA information is to the link-local layer, and adopts described connection to set up module 54 to be used to set up connection between described link-local layer and the objective network link layer.Like this,, realize complete media-independent link switchover flow process together, can not cause confusion together with the order MIH Switch that the upper-layer user notifies the MIH layer to carry out link switchover.
Description of drawings
Fig. 1 prior art MIH generalized reference model schematic diagram shows the Service Access point between MIH layer and the upper and lower layer among the figure;
Fig. 2 is the sequential chart of the link switch-over method of media-independent of the present invention;
Fig. 3 is the theory diagram of the link switchover device of media-independent of the present invention.
Embodiment
Basic principle of the present invention is: in media-independent link switchover operation, clearly definition and closely-related two orders of link switchover: be used to set up new link-attached link and be connected (Link Connect) order, be used to remove original link-attached link and remove (Link Disconnect) order.Like this, together with the order MIH Switch that the upper-layer user notifies the MIH layer to carry out link switchover, realize complete media-independent link switchover flow process together.
Below in conjunction with execution mode and accompanying drawing, describe the present invention.
The present invention defines Link Connect earlier and Link Disconnect orders again, and the order MIH Switch that cooperates the upper-layer user to notify the MIH layer to carry out link switchover finishes media-independent link switchover flow process of the present invention together.
One, Link Connect order:
This order comprises order of link connection request and link connection response message, be respectively two primitive: one is link-attached request primitive Link_Connect.request, be used to ask the MIH layer to be established to new PoA (Point of Attachment, access point) link connects, another is link-attached response primitive Link_Connect.response, is used to confirm the result of link establishment.Below introduce described two primitive respectively.
1.1 link-attached request primitive Link_Connect.request, its parameter-definition is as follows:
Link_Connect.request(
NewLinkIdentifier
)
Above parameter declaration is as follows:
| Parameter name | Type | Effective range | Describe |
| NewLinkIdentifier | Link Identifier | Elongated | An identifier of a new link.The value field consists of the following TLVs:-Link Type (Linktype)-Mobile Node MAC (Media Access Control, medium access control) Address (mobile node MAC Address)-PoA MAC Address (MAC Address of POA) |
Table one
As shown in Table 1, link connection request primitive comprises new link identifier parameter a: NewLinkIdentifier, its expression: the MAC Address of the new Linktype that connect, mobile node MAC Address and POA.
1.2 link-attached response primitive Link_Connect.response, its parameter-definition is as follows:
Link_Connect.response(
LinkConnectStatus
)
Being described as follows of above parameter:
| Parameter name | Type | Effective range | Describe |
| LinkConnectStatus | Boolean | N/A | 0: stop setting up link and connect 1: carry out and set up the link connection |
Table two
Link connection response primitive comprises and stops setting up link and connect or carry out and set up link-attached designator (parameter): LinkConnectStatus, the result of expression link establishment.Its value is to represent that stopping setting up link connected at 0 o'clock, and its value is to represent to carry out in 1 o'clock to set up link and connect.Link connection request and link connection response primitive transmit between MIHF and link layer, are used to indicate link layer to set up the connection of mobile node to network.
Two, Link Disconnect order:
This order comprises the request command of link dismounting and the response message that link is removed, be respectively two primitive: one is that link is removed request primitive Link_Disconnect.request, being used to ask the MIH layer to remove is connected with the link of former PoA, another is that link is removed response primitive Link_Disconnect.response, is used to the result who confirms that link is removed.
2.1 link is removed request primitive Link_Disconnect.request, its parameter-definition is as follows:
Link_Disconnect.request(
OldLinkIdentifier
)
Above parameter declaration is as follows:
| Parameter name | Type | Effective range | Describe |
| OldLinkIdentifier | Link Identifier | Elongated | An identifier of a old link.The value field consists of the following TLVs:-Link Type (Linktype)-Mobile Node MAC Address (mobile node MAC Address)-PoA MAC Address (MAC Address of POA) |
Table three
As shown in Table 3, link is removed request primitive and is used to ask the dismounting of MIH layer to be connected with the link of former PoA, it comprises former link identifier parameter a: OldLinkIdentifier, its expression: the MAC Address that remove Linktype, mobile node MAC Address and the POA of connection.
2.2 link is removed response primitive Link_Disconnect.response, its parameter-definition is as follows:
Link_Disconnect.response(
LinkDisconnectResult
)
Being described as follows of above parameter:
| Parameter name | Type | Effective range | Describe |
| LinkDisconnectResult | Boolean | N/A | The result that link is removed: 0: failure 1: success |
Table four
As shown in Table 4, link is removed response primitive and is comprised link dismounting result parameter: LinkDisconnectResult, the result of expression link dismounting.Its value is to represent failure at 0 o'clock, is to represent success at 1 o'clock.Link removes request and link dismounting response primitive transmits between MIHF and link layer, is used to indicate link layer to remove the connection of mobile node to network.
Consult Fig. 2, the link switch-over method of media-independent of the present invention initiates to describe the present invention in detail from 802.11 to 3GPP being example with terminal, specifically may further comprise the steps:
The initialization that A, current network and objective network all switch comprises following substep 100～400:
100, mobile node STA/MN and current network 802.11 have been set up session connection.
This step is the prerequisite of link switchover, promptly under the situation of having set up session connection, need carry out following link switchover flow process.
200, make the decision of switching owing to reasons such as link condition changes cause the node user strategic layer, and methods such as handling capacity discovery and information request have been selected the objective network 3GPP that switches.
300, STA/MN (Station/Mobile Node, mobile radio station/mobile node) MIH user produces a MIH switching initialization request MIH_Handover_Initiate.request and issues local MIHF functional entity, and local MIHF is transmitted to the peer layer of the POA of current network (802.11) with it.After the MIHF of peer layer receives this request, produce a MIH handover preparation request MIH_Handover_Prepare.request message, send to the MIHF functional entity of objective network (3GPP) POA that STA/MN chooses by the MIH agreement in the transmission of layer 3.
400, objective network (3GPP) is ready to return the MIHF of a MIH switching preparation response MIH_Handover_Prepare.response response message to current network after the resource, after the MIHF of current network receives this message, switch the result who prepares response MIH_Handover_Prepare.response message based on MIH and return the MIHF that a MIH switching initialization response MIH_Handover_Initiate.response message is given STA/MN, the inside comprises information such as preferred POA and Linktype.The local MIHF of STA/MN gives its MIH user with this forwards.
B, local MIH client layer send a handover request to local MIHF, and described handoff request is the order from the current network link switchover to the objective network link with session; Specifically as described in the following steps 500:
500, the MIH user of STA/MN sends a MIH handoff request MIH Switch.request and orders to local MIHF, and request is gone from current link switchover session to the objective network link of selecting.
C, described local MIHF notice current network prepare to switch to objective network; Specifically as described in the following steps 600:
600, the MIHF of STA/MN receives and sends a MIH behind the switching command on upper strata and switch and carry out the MIHF of request MIH_Handover_Commit.request message to current network (802.11), and the notice current network is prepared to switch to new network.The MIHF of current network (802.11) returns a MIH and switches execution response MIH_Handover_Commit.reponse message, and indication STA/MN begins to switch and set up the link of layer 2.
D, described local MIHF send the link connection request order that comprises the new link identifier parameter of objective network and arrive the link-local layer; Specifically as described in the following steps 700:
700, the MIHF of STA/MN sends the 3GPP link layer of link connection request order Link_Connect.request to this locality, comprises the new link identifier parameter of objective network.As previously mentioned, the order of described link connection request be definition be used to set up new link-attached request primitive, the MAC Address of new Linktype, mobile node MAC Address and POA that described new link identifier parametric representation will connect.
E, set up the connection between described link-local layer and the objective network link layer; Specifically be that local 3GPP network link layer begins to set up with the link of objective network and is connected, return link connection response message Link_Connect.response gives MIHF after finishing, and indication has been carried out or stopped link-attached foundation.
800, after the 3GPP link establishment was got up, the 3GPP link layer of STA/MN and objective network POA was sent out to their MIHF layer simultaneously and is connected indication Link_Up.indication incident, and the indication link has been set up.Subsequently MIHF course upper strata separately send out MIH connected the indication MIH_Link_Up.indication report this incident.
900, after the user of the POA of objective network (3GPP) detects link establishment and finishes, send MIH and switch and finish request MIH_Handover_Complete.request and order MIHF to objective network.Described objective network MIHF transmits the MIHF that this message is given former POA (802.11), and it then transmits the MIHF that this message is given STA/MN, and former POA begins data in buffer in the handoff procedure is transmitted to the POA of objective network simultaneously.After the MIHF of STA/MN received handoff completion message, transmission MIH switching was finished indication MIH_Handover_Complete.indication and is indicated switching to finish to its user.
1000, STA/MN user starts the registration process of MIP (Mobile IP, mobile IP).
1100, after MIP registration was finished, STA/MN user sends out MIH switched to finish and confirms that MIH_Handover_Complete.confirm confirms to finish switching for local MIHF.
F, local MIHF send request command that link removes to former network link layer, specifically as described in the following steps 1200:.
1200, the request command removed of described link is that the link that is used for of aforementioned definitions is removed request primitive, comprises former link identifier parameter, indicates to remove the MAC Address of Linktype, mobile node MAC Address and the POA of connection.The MIHF of STA/MN sends link dismounting request Link_Disconnect.request and orders to former 802.11 link layers, and request is removed former link and connected.Connect 802.11 link layer is removed the link of former POA, and still failure is removed successfully in return link dismounting response Link_Disconnect.response indication.
1300, after link is removed successfully, the MIHF of STA/MN sends the MIH switching and finishes the MIHF of response MIH_Handover_Complete.response message to former POA, it transmits the MIHF that this message is given objective network POA, the MIHF of objective network POA receives to switch to finish and sends MIH behind the response message and switch to finish and confirm MIH_Handover_Complete.confirm to client layer, and indication is switched and finished.
1400, the MIHF of STA/MN transmission MIH handoff response MIH_Switch.reponse message is finished to local user's layer indication switching.
1500, switching is finished, and the carrying that session is based upon 3GPP connects.
So far, all finish the operation of media-independent link switchover.
From as can be seen above, relatively prior art does not define the MIH layer and carries out the link switchover order and cause the link switchover can not be successfully or cause the technical problem of confusion easily, because the present invention clearly defines and closely-related two orders of link switchover: be used to set up new link-attached link and be connected (LinkConnect) order, be used to remove original link-attached link and remove (Link Disconnect) order.Like this,, realize complete media-independent link switchover flow process together, can not cause confusion together with the order MIH Switch that the upper-layer user notifies the MIH layer to carry out link switchover.
The present invention not only can be applied to 802.11 with the link-attached switching of 3GPP on, can also be applied between other heterogeneous networks, such as 802.3,802.11,802.16 and 3GPP between switch application.
Consult Fig. 3, the present invention also provides a kind of link switchover device of media-independent.The media-independent network that described device is applied between the dissimilar medium switches, and comprises handoff request sending module 51, switching notice module 52, link connection request order sending module 53, connects and set up module 54, connection dismounting order sending module 55 and data cached forwarding module 56.In the present embodiment, the described handover network that needs comprises mobile node 60, current network 70 and objective network 80.Present embodiment supposes that current link connection is the connection between mobile node 60 and the current network 70, need switch to this connection being connected of mobile node 60 and objective network 80.
Described handoff request sending module 51 is used to indicate mobile node MIH user 61 to send switching command to local MIHF 62.Described handoff request is the order from the current network link switchover to the objective network link with session.The local MIHF 62 notice current networks 70 of described switching notice module 52 indications prepare to switch to objective network 80.Described link connection request order sending module 53 is used to indicate described local MIHF62 transmission to comprise the link connection request order of the new link identifier parameter of objective network to link-local layer 63.The MAC Address of new Linktype, mobile node MAC Address and POA that described new link identifier parametric representation will connect.
As previously mentioned, the order of described link connection request be definition be used to set up new link-attached request primitive.The MAC Address of new Linktype, mobile node MAC Address and POA that described new link identifier parametric representation will connect.
Described connection is set up module 54 and is used to set up connection between described link-local layer 63 and the objective network link layer 83.Described connection is removed order sending module 55 when link-local layer 63 return link connection response message, is used to indicate local MIHF 62 to send the request command of link dismounting to former network link layer 73.The request command that described link is removed is the request primitive that link is removed that is used for of definition, comprises former link identifier parameter, indicates to remove the MAC Address of Linktype, mobile node MAC Address and the POA of connection.。Described link connection response message is the response primitive that is used to confirm the link establishment result of definition, comprises to stop setting up link and connect or carry out and set up link-attached designator.
Described data cached forwarding module 56 is used for connecting when setting up when objective network 80 detects, and indicates former network 70 that data in buffer in the handoff procedure is forwarded to objective network 80, to realize seamless switching.
The operation of the link switchover device of described media-independent is as follows:
Make the decision of switching owing to reasons such as link condition changes cause the node user strategic layer, and methods such as handling capacity discovery and information request have been selected the objective network 80 that switches.The initialization that this moment, current network 70 and objective network 80 all switched.The MIH user 61 of mobile node 60 produces a MIH switching initialization request MIH_Handover_Initiate.request and issues local MIHF62 functional entity, and local MIHF 62 is transmitted to the current network MIHF72 peer layer of the POA of current network 70 with it.After the MIHF 72 of peer layer receives this request, produce a MIH handover preparation request MIH_Handover_Prepare.request message, send to the MIHF functional entity 82 of the objective network POA that STA/MN chooses by the MIH agreement in the transmission of layer 3.
Objective network 80 is ready to return the MIHF of a MIH switching preparation response MIH_Handover_Prepare.response response message to current network 70 after the resource, after the MIHF of current network 70 receives this message, switch the result who prepares response MIH_Handover_Prepare.response message based on MIH and return the MIHF 62 that a MIH switching initialization response MIH_Handover_Initiate.response message is given mobile node, the inside comprises information such as preferred POA and Linktype.The local MIHF 62 of mobile node gives its MIH user 61 with this forwards.
Described handoff request sending module 51 sends a MIH handoff request MIH_Switch.request orders to local MIHF 62, and request is gone from current link switchover session to the objective network link of selecting 83.After the MIHF 62 of mobile node 60 receives the switching command on upper strata, send a MIH by described switching notice module 52 and switch the MIHF 72 of execution request MIH_Handover_Commit.request message to current network 70, notice current network 70 is prepared to switch to objective network 80.The MIHF 72 of current network 70 returns a MIH and switches execution response MIH_Handover_Commit.reponse message, and indication mobile node 60 begins to switch and set up the link of layer 2.
Described link connection request order sending module 53 sends the link connection request order that comprises information such as objective network link 83 and POA address and arrives link-local layer 63.
Described connection is set up module 54 and is set up connection between described link-local layer 63 and the objective network link layer 83.After link establishment is got up, connect when setting up when objective network 80 detects, the former network 70 of described data cached forwarding module 56 indications is forwarded to objective network 80 with data in buffer in the handoff procedure, to realize seamless switching.
All to be forwarded to objective network after 80s when data in buffer, and described connection is removed order sending module 55 when link-local layer 63 return link connection response message, indicates local MIHF 62 to send request command that links remove to former network link layer 73.Described link connection response message is the response primitive that is used to confirm the link establishment result of definition, comprises to stop setting up link and connect or carry out and set up link-attached designator.Switching is finished, and the carrying that session is based upon new network link connects.
From as can be seen above, because the present invention clearly defines and closely-related two orders of link switchover: be used to set up new link-attached link and be connected (Link Connect) order, be used to remove original link-attached link and remove (Link Disconnect) order.When receiving upper-layer user's switching command, the link connection request order of adopting the local MIHF 62 of link connection request order sending module 53 indications to send to comprise objective network link and POA information is to link-local layer 63, and adopts described connection to set up module 54 to be used to set up connection between described link-local layer 63 and the objective network link layer 83.Like this,, realize complete media-independent link switchover flow process together, can not cause confusion together with the order MIH Switch that the upper-layer user notifies the MIH layer to carry out link switchover.
The present invention also adopts data cached forwarding module 56 to indicate former network 70 that data in buffer in the handoff procedure is forwarded to objective network 80, to realize seamless switching; The present invention further adopts connection to remove order sending module 55 and arrives former network link layer 73 with the request command of indicating local MIHF 62 to send the links dismounting, the final like this link switchover operation of finishing media-independent.
More than the link switch-over method and the device of a kind of media-independent provided by the present invention is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (17)
1. the link switch-over method of a media-independent is characterized in that, comprises step:
The irrelevant switching MIH client layer of local media sends a handover request to the irrelevant handover (mih) functions MIHF of local media, and described handoff request is the order from the current network link switchover to the objective network link with session;
After receiving described handoff request, described local MIHF sends the link connection request order that comprises the new link identifier parameter of objective network and arrives the link-local layer;
Set up the connection between described link-local layer and the objective network link layer.
2. the link switch-over method of media-independent according to claim 1, it is characterized in that, the order of described link connection request be definition be used to set up new link-attached request primitive, described new link identifier parametric representation: the MAC Address of the new Linktype that connect, mobile node medium access control MAC Address and access point POA.
3. the link switch-over method of media-independent according to claim 1 is characterized in that, further comprises step after connecting: local MIHF sends and removes the link-local layer of former link-attached link dismounting request command to former network.
4. the link switch-over method of media-independent according to claim 3, it is characterized in that, the request command that described link is removed is the request primitive that link is removed that is used for of definition, comprise former link identifier parameter, indicate to remove the MAC Address of Linktype, mobile node MAC Address and the POA of connection.
5. according to the link switch-over method of claim 3 or 4 described media-independents, it is characterized in that, after sending link dismounting request command, further comprise step:
Local MIHF receives link dismounting response message;
When this response message indication was removed successfully, local MIHF sent the MIH switching and finishes response message to objective network MIHF;
Described objective network MIHF receives described switching and finishes and send MIH behind the response message and switch and finish acknowledge message to the objective network client layer, and indication is switched and finished;
Local MIHF sends the MIH handover request ack message of described switching command and finishes to local user's layer indication switching.
6. the link switch-over method of media-independent according to claim 3, it is characterized in that, it is being used to of defining to indicate link layer to remove the response primitive of mobile node to the connection of network that described link is removed response message, comprises the result's of expression link dismounting parameter.
7. the link switch-over method of media-independent according to claim 3 is characterized in that, after link-local layer return link connection response message, carries out the step of the request command of described transmission link dismounting.
8. the link switch-over method of media-independent according to claim 7, it is characterized in that, described link connection response message is the response primitive that is used to confirm the link establishment result of definition, comprises to stop setting up link and connect or carry out and set up link-attached designator.
9. according to the link switch-over method of each described media-independent of claim 1 to 3, it is characterized in that connect when setting up when objective network detects, former network is forwarded to objective network with data in buffer in the handoff procedure.
10. the link switch-over method of media-independent according to claim 1 is characterized in that, when the initialization that current network and objective network all switch, carries out the step that described local MIH client layer sends a handover request to local MIHF.
11. the link switchover device of a media-independent, comprise the handoff request sending module, it is used to indicate the irrelevant switching MIH client layer of local media to send a handover request to the irrelevant handover (mih) functions MIHF of local media, described handoff request is the order from the current network link switchover to the objective network link with session, it is characterized in that, comprise that further link connection request order sending module and connection set up module, the link connection request order that described link connection request order sending module is used to indicate described local MIHF to send to comprise the new link identifier parameter of objective network is to the link-local layer, and described connection is set up module and is used to set up connection between described link-local layer and the objective network link layer.
12. the link switchover device of media-independent according to claim 11, it is characterized in that, the order of described link connection request be definition be used to set up new link-attached request primitive, described new link identifier parametric representation: the MAC Address of the new Linktype that connect, mobile node medium access control MAC Address and access point POA.
13. the link switchover device of media-independent according to claim 11 is characterized in that, further comprises connecting removing the order sending module, the request command that is used to indicate local MIHF to send the link dismounting is to former network link layer.
14. the link switchover device of media-independent according to claim 13, it is characterized in that, the request command that described link is removed is the request primitive that link is removed that is used for of definition, comprise former link identifier parameter, it indicates to remove the MAC Address of Linktype, mobile node MAC Address and the POA of connection.
15. the link switchover device according to claim 13 or 14 described media-independents is characterized in that, described connection is removed the order sending module when link-local layer return link connection response message, carries out the operation that described indication sends order.
16. the link switchover device of media-independent according to claim 15, it is characterized in that, described link connection response message is the response primitive that is used to confirm the link establishment result of definition, comprises to stop setting up link and connect or carry out and set up link-attached designator.
17. link switchover device according to each described media-independent of claim 12 to 14, it is characterized in that, further comprise data cached forwarding module, be used for indicating former network that the handoff procedure data in buffer is forwarded to objective network when setting up when objective network detects to connect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610090348XA CN1968252B (en) | 2006-06-29 | 2006-06-29 | Media-independent link switching method |
| PCT/CN2007/070206 WO2008003265A1 (en) | 2006-06-29 | 2007-06-29 | A link handover method, device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610090348XA CN1968252B (en) | 2006-06-29 | 2006-06-29 | Media-independent link switching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1968252A true CN1968252A (en) | 2007-05-23 |
| CN1968252B CN1968252B (en) | 2010-09-22 |
Family
ID=38076796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610090348XA Active CN1968252B (en) | 2006-06-29 | 2006-06-29 | Media-independent link switching method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1968252B (en) |
| WO (1) | WO2008003265A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009039782A1 (en) * | 2007-09-19 | 2009-04-02 | Huawei Technologies Co., Ltd. | A mobile node apparatus, a method for realizing media independent handover and the system thereof |
| WO2009115015A1 (en) * | 2008-03-18 | 2009-09-24 | 华为技术有限公司 | A discovery and selection method for network, network system and communication device |
| CN101483611B (en) * | 2008-01-09 | 2011-09-14 | 华为技术有限公司 | System, method and apparatus for implementing message service interconnection |
| CN102625398A (en) * | 2012-03-07 | 2012-08-01 | 北京三星通信技术研究有限公司 | Method and equipment for recovering data traffics of high-level applications at time of multi-channel data connection switching |
| CN101316261B (en) * | 2007-06-01 | 2013-08-07 | 华为技术有限公司 | Method and apparatus for acquiring action supported by link layer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111356188B (en) * | 2018-12-24 | 2022-11-18 | 海能达通信股份有限公司 | Terminal handover method, communication terminal and storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000308110A (en) * | 1999-04-20 | 2000-11-02 | Canon Inc | Radio communication system and its communication method |
| CN100559899C (en) * | 2003-07-01 | 2009-11-11 | 株式会社日立制作所 | Mobile IP v 6 local agent seamless handover method |
| CN1307846C (en) * | 2003-10-17 | 2007-03-28 | 中兴通讯股份有限公司 | WCDMA to PHS system changing over executing method |
| US7496364B2 (en) * | 2004-11-05 | 2009-02-24 | Freescale Semiconductor, Inc. | Media-independent handover (MIH) method featuring a simplified beacon |
-
2006
- 2006-06-29 CN CN200610090348XA patent/CN1968252B/en active Active
-
2007
- 2007-06-29 WO PCT/CN2007/070206 patent/WO2008003265A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316261B (en) * | 2007-06-01 | 2013-08-07 | 华为技术有限公司 | Method and apparatus for acquiring action supported by link layer |
| WO2009039782A1 (en) * | 2007-09-19 | 2009-04-02 | Huawei Technologies Co., Ltd. | A mobile node apparatus, a method for realizing media independent handover and the system thereof |
| CN101483611B (en) * | 2008-01-09 | 2011-09-14 | 华为技术有限公司 | System, method and apparatus for implementing message service interconnection |
| WO2009115015A1 (en) * | 2008-03-18 | 2009-09-24 | 华为技术有限公司 | A discovery and selection method for network, network system and communication device |
| CN102625398A (en) * | 2012-03-07 | 2012-08-01 | 北京三星通信技术研究有限公司 | Method and equipment for recovering data traffics of high-level applications at time of multi-channel data connection switching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1968252B (en) | 2010-09-22 |
| WO2008003265A1 (en) | 2008-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1881919A (en) | Method for switching between heterogeneous networks | |
| CN1191735C (en) | Method for a handover between different nodes in a mobile communication system | |
| CN1610324A (en) | Network apparatus and method for stable handoff | |
| CN101040463A (en) | Hand-off system and method of dual mode mobile for connecting mobile communication system and wireless lan | |
| CN101052212A (en) | Method for re-attaching network of mobile terminal | |
| CN101035049A (en) | Method of managing interworking between wireless local area network and mobile network and corresponding device | |
| JP2008236079A (en) | Wireless communication equipment and wireless communication method | |
| CN101052206A (en) | Mobile terminal network attaching method | |
| CN1968252A (en) | Media-independent link switching method and apparatus | |
| CN1852615A (en) | Wireless-network environment detection and reporting method in network switch-over | |
| CN1933663A (en) | Method for supporting user equipment transferability in LTE system | |
| CN101053268A (en) | Handover system and method in heterogeneous network | |
| CN101051986A (en) | Method and device for realizing quick switch | |
| CN1756412A (en) | Station switching method in WLAN | |
| CN1832628A (en) | Three-layer mobile switchover implementing method based on two-layer prediction and trigging | |
| CN1112014C (en) | Wireless network roaming method of cross IP domain | |
| CN1960569A (en) | Method for quickening switch of terminal | |
| CN1921701A (en) | Network switching method and communication network system | |
| CN101052213A (en) | User's data transmission method while user's device switching in long term evolution network | |
| CN1780481A (en) | Discrimination for service wireless network sub-system transfer by user apparatus | |
| CN101047957A (en) | Method for quickly activating moving platform | |
| CN1933664A (en) | Method for supporting user equipment transferability in LTE system | |
| CN1992606A (en) | NGN network system and method for implementing mobility management | |
| CN1859750A (en) | Switching method while multiple mode terminal using multiple links | |
| CN1933444A (en) | Method for supporting user equipment transferability in LTE system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |