CN100512145C - Method for knowing the change information of the event source in the heterogenous network - Google Patents
Method for knowing the change information of the event source in the heterogenous network Download PDFInfo
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- CN100512145C CN100512145C CNB2006100004879A CN200610000487A CN100512145C CN 100512145 C CN100512145 C CN 100512145C CN B2006100004879 A CNB2006100004879 A CN B2006100004879A CN 200610000487 A CN200610000487 A CN 200610000487A CN 100512145 C CN100512145 C CN 100512145C
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Abstract
This invention relates to one method to get affairs source change information from hater network, which comprises the following steps: the system bottom layer gets the relative information of affairs to report to upper layer part real-time; the said upper layer part gets the affairs source change information according to the bottom layer reporting information. Through this invention, upper part can get the supported affairs in the process to improve system switch efficiently according to change adjust switch strategy.
Description
Technical field
The present invention relates to the communications field, relate in particular to the communication of switching in the multiple access network technological system.
Background technology
Along with development of Communication Technique, various new network technologies constantly occur, between heterogeneous networks such as present IEEE 802.11, IEEE 802.15, IEEE 802.16,3GPP, 3GPP2, switch the quality of the time communicating by letter in order to guarantee terminal with roaming, IEEE 802 wireless working groups have set up IEEE 802 switches seminar-Handoff ECSG, and definite designation afterwards is IEEE 802.21 working groups.It can make client device best network connection type and access point of automatic selectivity price ratio when inter-network roaming or switching, and can need not realize seamless switching under the situation of user intervention, strengthen the user experience of mobile device by supporting the switching between heterogeneous network.
802.21 the realization framework of agreement is as shown in Figure 1, its coverage comprises:
1, defined a kind of mobile node (MN) can provide the transparent continuous sex service when the link layer of isomery switches framework, the mobility management protocol stack of this framework to support in the network element to switch.802.21 agreement does not comprise framework realization details and the first-selected guidance that realizes.
2, in the mobility management protocol stack, define one group and switched relevant function and new entity, i.e. media-independent handoff functionality (MIHF) entity.
3, defined extra MAC layer SAPs and relevant primitive, helped to gather link layer information and control link behavior when switching at every kind of specific access technology.
4, defined the irrelevant Service Access Point (SAPs) and the relevant primitive that inserts MIHF of a group media, comprised:
(1) media-independent service, it provides information model and information bank so that formulate handover decisions effectively.
(2) media-independent command service, it is used for user's control of giving an order and switches relevant link behavior.
(3) media-independent Event Service, it comprises incident and trigger that local and remote interface produces.
The upper strata of described MIHF is carried out handover decisions and is carried out link selection according to input and context from MIHF.
Described MIHF provides the logical layer in the mobility management protocol stack of mobile node that move to support and network element, and it plays auxiliary and impetus in the handover decisions process.Simplifying the identification of switching occurrence condition and the discovery of effective handover information is the common-denominator target of MIHF.MIHF provides high-rise abstract service, and one group of interface that defines is provided, and the service primitive that these interfaces expose is independent of concrete access technology; MIHF communicates by the relevant interface of specific access technology and the mobility management protocol stack of low layer.
At present, the seamless switching of terminal between heterogeneous network mainly assisted and promote to media-independent handoff functionality (MIHF) entity by media-independent Event Service, media-independent command service and media-independent service, reduce switching delay and loss of data, strengthen user's experience.The media-independent Event Service is supported the remote events of local event and medium type of the same race.Remote events between the different media protocol stacks is unassisted.Described local event is meant: propagated into the MIH (media-independent switching) of native protocol stack or sent to local L3MP (3 layer-two mobility management agreement) by local MIH by L2 data link layer (MAC or Radio Link etc.).The native protocol stack can be positioned at access point such as the AP or the BS etc. of mobile terminal side or network side.Described remote events is meant MIH or the L3MP layer that propagates into the opposite end from MIH or L3MP.
Incident can be used to refer to the change of L2 data link layer transport behavior or the transition of predicted state, or the administration behaviour of indication network side or order.Important incident has: Link_Up (link establishment), Link_Down (link disconnection), Link_Going_Down (link will disconnect), Link_Handover_Imminient (link switchover begins), Link_Parameters_Change (link layer parameter variation) etc.The end that rises of incident comprises L2 data link layer, PHY or MIHF.Difference according to the end that rises can be divided into incident again: Link incident (end that rises is the incident of MIH lower floor) and MIH incident (end that rises is the incident of MIHF layer).The destination of wherein said Link incident comprises the MIH of native protocol stack and/or the MIH of remote protocol stack etc.; The destination of MIH incident comprises the layer 3 of this locality and/or far-end, perhaps other upper layer entity.The destination of incident adopts dynamic registration mechanism, as register own interested particular event by Link_Event_Register.request and Link_Event_Register.confirm message.The destination of incident need obtain the tabulation of Link incident and the tabulation of MIH incident before the register requirement of initiated event.The destination of incident mainly obtains the tabulation of LINK incident by Link_Event_Discover.request and Link_Event_Discover.confirm primitive at present, obtains the tabulation of MIH incident by MIH_Capability_Discover.request and MIH_Capability_Discover.confirm primitive.
The description of the Prior Art relevant with the present invention the discovery of local event, registration and unregistration flow process, as shown in Figure 2:
The incident supported to bottom entity requests lower course of solid by Event_Discover.request message of upper layer entity at first, the bottom entity sends the incident of oneself supporting to upper layer entity by Event_Discover.confirm message, upper layer entity is registered interested incident by Event_Register.request and Event_Register.confirm message then, or by Event_Deregister.request and Event_Deregister.Confirm message the incident of having registered is nullified.When bottom entity when event occurs, the bottom entity is by Link_Event.indiction and MIH_Event.indiction message informing upper layer entity.
In the prior art, system initiatively initiates situation that query requests knows that the bottom entity is supported by upper layer entity, this is more suitable to the situation that the event source that has existed of link layer and physical layer is inquired about and registered in power-up initializing or the initialized process of MIH functional entity for system, but in the process that system is working, the event source situation of change of being brought for hot-swappable equipment and other external module, upper layer entity can't be real-time pass through Link_Event_Discover and MIH_Capability_Discover primitive is followed the tracks of, and for the real-time tracking of some incidents, it is very important selecting for the switching initiation of system or switchover policy.For example: when upper layer entity to Link_Parameters_Change (link parameter variation) event registration after, the switchover policy on upper strata is possibly with reference to the indication of Link_Parameters_Change incident, if but when the bottom entity has lost tenability to the Link_Parameters_Change incident, and upper layer entity can't obtain this information timely, to the handover operation of whole system be impacted like this, influence the operating efficiency of system.When increase contained the external module of event source or equipment, upper layer entity also can't in time obtain the information of these incidents probably, has same problem.In summary it can be seen that there is following defective in prior art:
In the process of system's operation, upper layer entity can't in time be known the situation of bottom entity generation incident.
Summary of the invention
The purpose of this invention is to provide the method for knowing the event source change information in a kind of heterogeneous network, by the present invention, upper layer entity can in time be known the situation of change in bottom entity occurrence source in the process of system's operation, thereby can adjust switchover policy according to the situation of change of event source, and then improve the switching efficiency of system.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the method for knowing the event source change information in a kind of heterogeneous network, it comprises:
The bottom entity of A, system is by link event ability Indication message, initiatively the relevant information real-time report of the incident obtained is switched the MIH layer entity to media-independent, and by the MIH layer entity by MIH ability Indication message, the described information real-time report that receives is given the upper layer entity of system;
The information that B, described upper layer entity report according to described bottom entity is known the change information of event source.
Wherein, described steps A specifically comprises:
A1, switch in the initialization procedure of MIH layer entity the upper layer entity initiated event query requests of system, the relevant information of the incident that request bottom entity is supported in the initialization of system or media-independent;
A2, described bottom entity report described upper layer entity with the relevant information of the incident that oneself is supported;
A3, in the running of system, the bottom entity of system is by link event ability indication Link_Event_Capability.Indication message, initiatively the relevant information real-time report of the incident that changes that will obtain is given the MIH layer entity, and pass through the MIH ability by the MIH layer entity and indicate MIH_Capability.Indication message, the described information real-time report that receives is given the upper layer entity of described system.
Wherein, described steps A 1 specifically comprises:
A11, in the initialization procedure of the initialization of system or MIH layer entity, the upper layer entity of system sends MIH incident ability discovery request MIH_Capability_Discover.request message to the MIH layer entity, comprises the relevant information of the incident of needs request in the described message;
A12, described MIH layer entity find that by link event request Link_Event_Discover.request message will need information requested to pass to the bottom entity of system.
Wherein, described steps A 2 specifically comprises:
The bottom entity of A21, described system find to confirm that by link event Link_Event_Discover.confirm message sends to described MIH layer entity with the relevant information of the incident of own support;
A22, described MIH layer entity confirm that by MIH incident ability discovery MIH_Capability_Discover.confirm message passes to the information that receives the upper layer entity of described system.
Wherein, described steps A specifically comprises:
A4, in the initialization procedure of the initialization of system or MIH layer entity, the bottom entity of system initiatively reports the MIH layer entity with the relevant information of the incident of own support by link event ability indication Link_Event_Capability.Indication message, and pass through the MIH ability by the MIH layer entity and indicate MIH_Capability.Indication message, the described information real-time report that receives is given the upper layer entity of system;
A5, in the running of system, the bottom entity of system is by Link_Event_Capability.Indication message, initiatively the relevant information real-time report of the incident that changes that will obtain is given the MIH layer entity, and by the MIH layer entity by MIH_Capability.Indication message, the described information real-time report that receives is given the upper layer entity of described system.
Wherein, the relevant information of described incident comprises: the event source of incident and incident.
As seen from the above technical solution provided by the invention, the bottom entity of system is given upper layer entity with the relevant information real-time report of the incident obtained among the present invention, therefore by the present invention, upper layer entity can in time be known the situation of change of bottom incident that entity is supported in the process of system's operation, thereby can adjust switchover policy according to the situation of change of event source, and then improve the switching efficiency of system.
Description of drawings
Fig. 1 is the realization configuration diagram of 802.21 agreements;
Fig. 2 is discovery, the registration and unregistration flow process of local event in the prior art;
Fig. 3 is the flow chart of first embodiment provided by the invention;
Fig. 4 is the flow chart of second embodiment provided by the invention.
Embodiment
The invention provides the method for knowing the event source change information in a kind of heterogeneous network, its core is: the bottom entity of system is given upper layer entity with the relevant information real-time report of the incident obtained; The information that described upper layer entity reports according to described bottom entity is known the change information of event source.Can improve the switching efficiency of system by this method, particularly require than higher business for real-time.
First embodiment provided by the invention, its main thought is: in the initialization or the initialization procedure of MIH layer entity of system, identical with prior art, by MIH_Event_Discover (discovery of MIH incident), as MIH_Capability_Discover (MIH ability discovery), and Link_Event_Discover (link event discovery) obtains the list of thing that the bottom entity is supported, in system's running,, the incident of basic-level support increases or when disappearing when having, bottom by Link_Event_Capability.Indication (indication of link event ability) initiatively real-time report the MIH layer, the MIH layer by MIH_Capability.Indication (indication of MIH ability) real-time report to upper layer entity.Its implementation process comprises as shown in Figure 3:
In the initialization procedure of the initialization of system or MIH layer entity, the upper layer entity initiated event query requests of system, the relevant information of the incident that request bottom entity is supported.Specific implementation process comprises:
Step 101, in the initialization procedure of the initialization of system or MIH layer entity, the upper layer entity of system sends MIH_Capability_Discover.Request (request of MIH ability discovery) message and gives the MIH layer entity, comprises the relevant information of the incident of needs request in the described message.
Step 102, described MIH layer entity will need information requested to pass to the bottom entity of system by Link_Event_Discover.request (link event is found request) message.
After the bottom entity received described message, the relevant information of the incident that oneself is supported reported described upper layer entity; The concrete process that reports comprises:
Step 103, described bottom entity sends to described MIH layer entity by Link_Event_Discover.confirm (link event is found to confirm) message with the relevant information of the incident that oneself is supported.
Step 104, described MIH layer entity passes to the information that receives the upper layer entity of described system by MIH_Capability_Discover.confirm (affirmation of MIH ability discovery) message.
In the running of system, the relevant information real-time report of the incident that changes that the bottom entity of system initiatively will obtain is given described upper layer entity.Concrete implementation process comprises:
Step 105, in the running of system, the bottom entity of system is initiatively given the relevant information real-time report of the incident that changes the MIH layer entity of system by Link_Event_Capability.Indication (indication of link event ability) message.
Comprise two information elements of EventSource and SupportedEventList in the described Link_Event_Capability.Indication message, wherein EventSource is for supporting the event source of incident in the list of thing, SupportedEventList is a list of thing, the incident that this tabulation comprises can only be the incident that changes, can be the present whole incidents supported of bottom, this programme not be done concrete requirement yet.
Step 106, described MIH layer entity are given the information real-time report that receives by MIH_Capability.Indication (indication of MIH ability) message the upper layer entity of described system.
Comprise two information elements of EventSource and SupportedEventList in the described MIH_Capability.Indication message equally, implication and above-mentioned associated description are identical.
After described upper layer entity receives the information that described bottom entity reports, therefrom know the change information of event source.Can to which incident needs re-register or nullify according to the situation of change of event source then and make judgement, and adjust switchover policy accordingly.
By first embodiment provided by the invention as can be seen, it has increased Link_Event_Capability.Indication and MIH_Capability.Indication message on the basis of existing technology.When bottom because after the event source that hot-swappable equipment and external module or other reason are brought changes, can give the MIH layer by the reporting events that Link_Event_Capability.Indication message will increase newly or disappear in real time, the MIH layer is given upper strata (as: mobility management protocol stack) by MIH_Capability.Indication message real-time report.This mode remedied prior art at the middle and upper levels entity can not real-time tracking bottom entity in the shortcoming that changes of event source, its relative prior art can better improve the switching efficiency of system.
Second embodiment provided by the invention, the difference of itself and first embodiment is: system is when initialization or MIH module initialization, initiatively with the information notice MIH layer in the list of thing of its support, the MIH layer is given upper layer entity by the MIHCapability.Indication information reporting to the bottom entity then by Link_Event_Capability.Indication message.
Identical with first embodiment in system's running, be that the mode by real-time report makes the upper layer entity of system know the situation of change of event source in the bottom entity equally.Its implementation process comprises as shown in Figure 4:
In the initialization procedure of the initialization of system or MIH layer entity, the bottom entity of system initiatively reports upper layer entity with the relevant information of the incident of own support.Specific implementation process comprises:
Step 201, in the initialization procedure of the initialization of system or MIH layer entity, the bottom entity of system initiatively reports the relevant information of the incident of own support the MIH layer entity of system by Link_Event_Capability.Indication message.
The information and the associated description among first embodiment provided by the invention that comprise in the Link_Event_Capability.lndication message of this programme definition are identical.
Step 202, described MIH layer entity are given the information real-time report that receives by MIH_Capability.Indication message the upper layer entity of described system.
Comprise in the described MIH_Capability.Indication message: EventSource, SupportedEventList and SupportedCommandList information element.Wherein said EventSource is for supporting the event source of incident in the list of thing, SupportedEventList is a list of thing, the incident that this tabulation comprises can only be the incident that changes, and also can be the present whole incidents supported of bottom, and this programme is not done concrete requirement.The command list (CLIST) that SupportedCommandList supports for the MIH layer, this parameter is an optional parameters, the value that this parameter is returned after system initialization is finished can not have.
In the running of system, the relevant information real-time report of the incident that changes that the bottom entity of system initiatively will obtain is given described upper layer entity.Specific implementation process comprises:
Step 203, in the running of system, the bottom entity of system is initiatively given the relevant information real-time report of the incident that changes the MIH layer entity of system by Link_Event_Capability.Indication message.
The information and the associated description among first embodiment provided by the invention that comprise in the Link_Event_Capability.Indication message of this programme definition are identical.
Step 204, described MIH layer entity are given the information real-time report that receives by MIH_Capability.Indication message the upper layer entity of described system.
Comprise EventSource, SupportedEventList and SupportedCommandList information element in the described MIH_Capability.Indication message equally, implication and above-mentioned associated description are identical.
After described upper layer entity receives the information that described bottom entity reports, therefrom know the change information of event source.Can to which incident needs re-register or nullify according to the situation of change of event source then and make judgement, and adjust switchover policy accordingly.
By second embodiment provided by the invention as can be seen, in this scheme, Link_Event_Capability.Indication and MIH_Capability.Indication message with redetermination have substituted MIH_Capability_Discover and Link_Event_Discover message in the prior art, message by redetermination, in the initialization or the initialization procedure of MIH layer entity of system, the bottom entity can initiatively report upper layer entity with the information in the list of thing.In the process of system operation, the bottom entity initiatively reports among the process of upper layer entity and first embodiment change information of event source similar substantially.This mode can remedy the shortcoming that prior art can not the real-time tracking event source changes equally.
The foregoing description is described to be the situation that is applicable to local event, and for the situation of far-end incident, the present invention is suitable equally.
The specific embodiments of the embodiment that is provided by the invention described above as can be seen, the method that the bottom entity of the present invention by system initiatively reports the low layer event source situation that changes, make the upper strata can follow the tracks of information in the list of thing that bottom supports in real time, and can trigger the upper strata and take corresponding behavior according to this incident.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (6)
1, know the method for event source change information in a kind of heterogeneous network, it is characterized in that, comprising:
The bottom entity of A, system is by link event ability Indication message, initiatively the relevant information real-time report of the incident obtained is switched the MIH layer entity to media-independent, and the described information that will receive by MIH ability Indication message by the MIH layer entity, real-time report is given the upper layer entity of system;
The information that B, described upper layer entity report according to described bottom entity is known the change information of event source.
2, method according to claim 1 is characterized in that, described steps A specifically comprises:
A1, in the initialization procedure of the initialization of system or MIH layer entity, the upper layer entity initiated event query requests of system, the relevant information of the incident that request bottom entity is supported;
A2, described bottom entity report described upper layer entity with the relevant information of the incident that oneself is supported;
A3, in the running of system, the bottom entity of system is by link event ability indication Link_Event_Capability.Indication message, initiatively the relevant information real-time report of the incident that changes that will obtain is given the MIH layer entity, and pass through the MIH ability by the MIH layer entity and indicate MIH_Capability.Indication message, the described information real-time report that receives is given the upper layer entity of described system.
3, method according to claim 2 is characterized in that, described steps A 1 specifically comprises:
A11, in the initialization procedure of the initialization of system or MIH layer entity, the upper layer entity of system sends MIH incident ability discovery request MIH_Capability_Discover.request message to the MIH layer entity, comprises the relevant information of the incident of needs request in the described message;
A12, described MIH layer entity find that by link event request Link_Event_Discover.request message will need information requested to pass to the bottom entity of system.
4, method according to claim 2 is characterized in that, described steps A 2 specifically comprises:
The bottom entity of A21, described system find to confirm that by link event Link_Event_Discover.confirm message sends to described MIH layer entity with the relevant information of the incident of own support;
A22, described MIH layer entity confirm that by MIH incident ability discovery MIH_Capability_Discover.confirm message passes to the information that receives the upper layer entity of described system.
5, method according to claim 1 is characterized in that, described steps A specifically comprises:
A4, in the initialization procedure of the initialization of system or MIH layer entity, the bottom entity of system is by link event ability indication Link_Event_Capability.Indication message, active reports the MIH layer entity with the relevant information of the incident that oneself is supported, and pass through the MIH ability by described MIH layer entity and indicate MIH_Capability.Indication message, the described information real-time report that receives is given the upper layer entity of described system;
A5, in the running of system, the bottom entity of system is by Link_Event_Capability.Indication message, initiatively the relevant information real-time report of the incident that changes that will obtain is given the MIH layer entity, and by the MIH layer entity by MIH_Capability.Indication message, the described information real-time report that receives is given the upper layer entity of described system.
6, according to any described method of claim 1 to 5, it is characterized in that the relevant information of described incident comprises:
The event source of incident and incident.
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| CNB2006100004879A CN100512145C (en) | 2006-01-05 | 2006-01-05 | Method for knowing the change information of the event source in the heterogenous network |
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| CNB2006100004879A CN100512145C (en) | 2006-01-05 | 2006-01-05 | Method for knowing the change information of the event source in the heterogenous network |
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Non-Patent Citations (4)
| Title |
|---|
| IEEE 802.21 Media Independent Handover Services. IEEE 802.21.IEEE P802.21. 2005 |
| IEEE 802.21 Media Independent Handover Services. IEEE 802.21.IEEE P802.21. 2005 * |
| Media Independent Handover Service Draft TechnicalRequirements. Vivek Gupta.IEEE P802.21. 2004 |
| Media Independent Handover Service Draft TechnicalRequirements. Vivek Gupta.IEEE P802.21. 2004 * |
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