CN101009915B - Media-free switching device and its state migration method - Google Patents
Media-free switching device and its state migration method Download PDFInfo
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- CN101009915B CN101009915B CN2006100236537A CN200610023653A CN101009915B CN 101009915 B CN101009915 B CN 101009915B CN 2006100236537 A CN2006100236537 A CN 2006100236537A CN 200610023653 A CN200610023653 A CN 200610023653A CN 101009915 B CN101009915 B CN 101009915B
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Abstract
The related method decomposes MIHF into multiple sub-functions and one management unit, wherein the sub-function unit can independent transfer among unactivated state, free state and connection state according to the authentication register and connection conditions of corresponding access network, and processes the received message based on condition. While taking MIH switch, the entity in sub-function unit can transfer among switch preparation, execution, completion and selectable switch free condition, then processes the received data individually. This invention can process different message during cross-system switch, and handles the abnormal message.
Description
Technical field
The present invention relates to mobile communication technology, particularly media-independent handoff functionality equipment and state transfer method thereof.
Background technology
The communication technology, especially mobile communication technology develop rapidly in recent years.Along with first to the releasing one after another of 3G (Third Generation) Moblie (The Third Generation, be called for short " 3G ") system, mobile communication increases day by day to the influence of human lives and work.Along with increasing of user, really satisfy market and user's request, fixed network and mobile network's evolution and asymptotic fusion, soft switchcall server must possess the characteristic of mobile, multimedia and multiple access under open architectural framework.
Insert the implication that variation comprises access medium, inserts User Agreement and two aspects of type.From access medium, except traditional copper cable access way, also has multiple other access way, as the various Digital Subscriber Line in the fixed access network (being called for short " xDSL "), optical fibre-coaxial cable mixture (HybridFiber Coax, be called for short " HFC ") line, power line etc., the 802.11a/b in the wireless access network, bluetooth, fixed wireless, satellite, move etc.; From inserting User Agreement and type, have from based on H.323, internetworking agreement (Internet Protocol, be called for short " IP ") telephone terminal and integrated access equipment (Integrated Access Device, be called for short " IAD ") terminal, to traditional global system for mobile communications (Global System for mobile Communication, be called for short " GSM ") or code division multiple access (CodeDivision Multiple Access, be called for short " CDMA ") mobile subscriber, and the Wideband Code Division Multiple Access (WCDMA) of 3G (Wideband Code Division Multiple Access is called for short " WCDMA "), CDMA2000 user etc.
The variation that inserts makes that soft switchcall server can compatible traditional network insertion, fully guarantees the investment of operator's existing equipment; The opening of its access simultaneously guarantees fully that also soft switchcall server can incorporate more multiple terminals access style, thereby guarantees terminal, the more introducing of intelligent terminal of more cost performances, has fully guaranteed the ultimate interest of user, Incumbent and startup carrier.
Simultaneously, owing to include many different branching networks in the network of large-scale Virtual network operator in the world, and take different radio bands.Operator also wishes for various clients provide seamless, efficient service, thereby obtain advantage in competition when wishing profit maximization.At present, bring into schedule, and to the enforcement of 3G transition scheme, operator faces the challenge of great number of issues along with 3G builds, such as: the integration of multiple standards, numerous hybrid networks and transition etc.For operator, the base station of multi-mode, multiband and portable terminal seem extremely important.
But, in the 3G network all-round construction with before covering, the user can not only be confined in the 3G network, but when enjoyment 3G provides service, also need be in the place outside the 3G service network, the sound that 2G or 2.5G network can provide before continuing to enjoy transmits service and data, services.This also makes multimode phone and portable terminal should have the ability that in 2G, 2.5G and 3G network seamless link and roaming are switched.
In order to solve the roaming switching problem of user between each communication system, (the Institute of Electrical and Electronics Engineers of Institute of Electrical and Electronics Engineers, abbreviation " IEEE ") 802 wireless working groups have set up IEEE 802 switching seminar---Handoff ECSG, and definite designation afterwards is IEEE 802.21 working groups.This working group is responsible for working out public switching framework and is used for wired and wireless IEEE 802 standards, as IEEE 802.3/11/16/15 and third generation partner program (3rdGeneration Partnership Project, be called for short " 3GPP "), second group of (Third Generation Partnership Project II of third generation partner program, be called for short " 3GPP2 ") system etc., standard between these different systems, carry out the requirement and the corresponding handover mechanism of soft handover and direct-cut operation, this media-independent switches (Media Independent Handover is called for short " MIH "), and system configuration as shown in Figure 1.
MIH generalized reference model as shown in Figure 2, specifically, IEEE802.21 is exactly by using media-independent functional entity (Media Independent Handover Function, be called for short " MIHF "), physical layer (Physical Layer) and media interviews control (Media AccessControl to multiple Access Network, be called for short " MAC ") shield, and the relevant information of collecting these physical layers and MAC, provide unified interface to the upper strata then, make that the difference of different Access Networks is fully transparent to the upper strata.MIHF can be used for network side and end side.Support that the terminal of MIH function should be a multimode, and can insert multiple radio open simultaneously.
MIHF has defined extra MAC service access point (the ServiceAccess Point at every kind of specific access technology, abbreviation " SAP ") with relevant primitive, help to gather link layer information, as logic link control (Logical Link Control, be called for short " LLC ") information and control link behavior when switching, for switch decision, network selecting, the service selection on upper strata plays auxiliary and impetus.SAPs and the relevant primitive that inserts MIHF that one group media of its definition is irrelevant comprise:
The media-independent Event Service comprises incident and trigger that local and remote interface produces;
The media-independent command service is used for user's control of giving an order and switches relevant link behavior;
The media-independent service provides information model and information bank so that formulate handover decisions effectively.
MIHF uses message that media-independent Event Service, media-independent command service and media-independent service are provided, message commonly used comprises: transfer of data success, data transmission fails, link prepare to disconnect, detect that link, link disconnections, link parameter change, switching initialization, switching are prepared, switching execution and switching are finished etc., carry out message by SAPs with other layer and function plane, MIH SAP relation as shown in Figure 3, wherein, each SAP specifies the primitive of exchange message and the form of exchange message to be formed by one group.
Specifically, the SAPs of support media independence comprises: MIH_SME_SAP and MIH_SAP.
And the SAPs of support media correlation comprises: C_SAP, M_SAP, MIH_LINK_SAP, MIH_3GLINK_SAP, MIH_PPP_SAP, MIH_LAC_SAP.Primitive and function that the SAPs of support media correlation has used IEEE 802 link-layer technologies and cellular technology (3GPP, 3GPP2) standard to provide.
Existing IEEE802.21 normalized definition MIHF structure and switch relevant message, still shortage is to the definition of MIHF state.
In actual applications, such scheme exists the possibility of the interdepartmental system handoff failure of following problem: MIHF big.
Cause the main cause of this situation to be, because in the interdepartmental system handoff procedure of MIHF, the possibility that various message are made mistakes is big, and the MIHF that does not distinguish switching state can not effective recognition to unusual message, thus cause handoff failure may be big.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of media-independent handoff functionality equipment and state transfer method thereof, make MIHF correctly to handle to the various message that occur in the interdepartmental system handoff procedure, effectively do not go out unusual message with knowing, thereby can carry out corresponding abnormality processing.
For achieving the above object, the invention provides a kind of media-independent handoff functionality equipment state moving method, comprise at least one subfunction unit in the described function device, each subfunction unit is used to handle and the interface related message of one type service access point, and each described subfunction unit comprises state of activation and unactivated state at least;
Described subfunction unit if passed through the authentication registration of Access Network, can connect with Access Network when unactivated state, then enters state of activation;
Described subfunction unit is when state of activation, if the registration of the authentication by Access Network or can't connect with Access Network then enters unactivated state.
Wherein, described state of activation further comprises idle condition and connection status;
Described subfunction unit professionally is connected then enters connection status if set up with Access Network when idle condition, if the authentication registration not by Access Network or can't connect with Access Network then enter unactivated state;
Described subfunction unit is connected then enters idle condition if cancelled with all of Access Network are professional when connection status, if do not register by the authentication of Access Network or can't connect with Access Network then enter unactivated state;
Described subfunction unit if passed through the authentication registration of Access Network, can connect with Access Network when unactivated state, then enters idle condition.
The present invention also provides a kind of media-independent handoff functionality equipment state moving method, comprises at least one subfunction unit in the described function device, and each subfunction unit is used to handle and the interface related message of one type service access point; In the described function device with connect corresponding example and switch standby condition, switch executing state and switch completion status carrying out comprising at least when media-independent switches, wherein, described example is by the foundation of subfunction unit and cancel;
Described example receives that the message that the indication switching is prepared then enters the switching standby condition;
Described example switches the message of carrying out then enters the switching executing state if receive indication when switching standby condition;
Described example switches the message of finishing then enters the switching completion status if receive indication when switching executing state.
Wherein, described example is cancelled message or generation timer expiry incident that media-independent switches if receive indication when switching standby condition or switching executing state, then finish this media-independent and switch;
After described example enters and switches completion status, discharge with media-independent and switch relevant resource, after this finish this media-independent and switch.
In this external described method, described example also comprises the switching idle condition;
Described example is cancelled message or generation timer expiry incident that media-independent switches if receive indication when switching standby condition or switching executing state, then enter the switching idle condition;
After described example enters and switches completion status, discharge with media-independent and switch relevant resource, after this enter the switching idle condition;
Described example switches the message of preparing then enters the switching standby condition if receive indication when switching idle condition, switches the message of carrying out then enters the switching executing state if receive indication.
In this external described method, when described portable terminal was set up once professional the connection with corresponding Access Network, described function device was set up an example for this connection, and to switch the initial condition of idle condition as this example;
Described example is released if corresponding business connects when switching idle condition, and then described function device is cancelled this example.
The present invention also provides a kind of media-independent handoff functionality equipment, wherein comprises at least one subfunction unit, and each subfunction unit is used to handle and the interface related message of one type service access point;
Comprise state machine in each described subfunction unit, be used for according to the authentication registration situation of corresponding Access Network be connected situation and carry out state transition independently, wherein, the indicated state of state machine of described subfunction unit comprises state of activation and unactivated state, when unactivated state, if passed through the authentication registration of Access Network, can connect with Access Network, then enter state of activation; When state of activation, if the registration of the authentication by Access Network or can't connect with Access Network then enters unactivated state;
The message that each described subfunction unit is received according to the current state processing of living in of oneself state machine.
Wherein, also comprise administrative unit, be used for each subfunction unit of described function device is managed.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, MIHF is decomposed into a plurality of subfunctions unit and an administrative unit, be convenient to Access Network SAP and carry out interacting message and processing with corresponding subfunction unit, help the subfunction unit and independently determine the state transitions of self, reduce the correlation between each subfunction unit.
The subfunction unit according to the authentication registration situation of corresponding Access Network be connected situation, between unactivated state, idle condition and connection status, move independently, and can carry out differentiated treatment to receiving message based on state, effectively identify unusual message and carry out corresponding abnormality processing.
When carrying out the MIH switching, the example in the subfunction unit is switching standby condition, is switching executing state, is switching completion status and optionally switch between the idle condition and change.Because MIH is the switching of interdepartmental system, compare with general switching, handover delay is longer, the abnormal conditions that switching may run into are more, so make MIHF to carry out differentiated treatment to the various message that occur in switching by division to switching state, which tells effectively is unusual message, thereby carries out corresponding abnormality processing.For example,, should carry out at once and switch relevant action, if but receive to switch and carry out message then, should abandon switching executing state or switch completion status for unusual if receive and switch that to carry out message be normal switching standby condition.
Description of drawings
Fig. 1 is a MIH system configuration schematic diagram in the prior art;
Fig. 2 is a MIH generalized reference model schematic diagram in the prior art;
Fig. 3 is that the MIH SAP of IEEE802.21 draft definition in the prior art concerns schematic diagram;
Fig. 4 is the MIHF device structure schematic diagram according to first embodiment of the invention;
Fig. 5 is that the MIH SAP according to first embodiment of the invention concerns schematic diagram;
Fig. 6 is the MIHF equipment state moving method schematic diagram according to second embodiment of the invention;
Fig. 7 is the MIHF equipment state moving method schematic diagram according to second embodiment of the invention;
Fig. 8 is the MIHF equipment state moving method schematic diagram according to third embodiment of the invention;
Fig. 9 is the MIHF equipment state moving method schematic diagram according to four embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention handles switching between a plurality of heterogeneous networks according to MIHF, and MIHF is decomposed into a plurality of subfunctions, and the state of each subfunction may be different.Each subfunction is independently determined the state transitions of self, and according to the difference of residing state, carries out interacting message and processing between the SAP with Access Network accordingly.In addition, when carrying out the MIH switching, the example in the subfunction unit is changed between different switching states, so that correctly handle the various message of being received according to residing different switching states, reduces the possibility of interdepartmental system handoff failure.
The MIHF device structure of first embodiment of the invention as shown in Figure 4, wherein comprise administrative unit and three (can for one or more) subfunction unit, for example as shown in Figure 5, MIHF is decomposed into a plurality of subfunctions unit, comprises 802.3 subfunctions, 802.11 subfunctions, 802.16 subfunctions, 3GPP subfunction and 3GPP2 subfunction.
Specifically, each the subfunction unit in the MIHF equipment is managed by administrative unit, by with the interface of network management entity, be responsible for management, as initialization, parameter configuration etc. to MIHF.
Also comprise state machine in each subfunction unit, be used for according to the authentication registration situation of corresponding Access Network be connected situation and carry out state transition independently.The interface related message of SAP of the corresponding types that the subfunction unit is received according to the current state processing of living in of oneself state machine.
This structure is convenient to Access Network SAP and corresponding subfunction unit carries out interacting message and processing, helps the subfunction unit and independently determines the state transitions of self, reduces the correlation between each subfunction unit.
The MIHF equipment state moving method of second embodiment of the invention as shown in Figure 6, the indicated state of state machine of the subfunction unit in MIHF equipment comprises state of activation (Active) and unactivated state (inActive) etc.
The subfunction unit if passed through the authentication registration of Access Network, can connect with Access Network when unactivated state, then enters state of activation; And when state of activation, if the registration of the authentication not by Access Network or can't connect with Access Network then enters unactivated state.
Wherein, the state of activation of subfunction unit further comprises idle condition (Idle) and connection status, as shown in Figure 7, and can carry out differentiated treatment to receiving message based on these states, can identify unexpected message effectively and carry out corresponding abnormality processing.
The subfunction unit professionally is connected then enters connection status if set up with Access Network when idle condition, if the authentication registration not by Access Network or can't connect with Access Network then enter unactivated state.
The subfunction unit is connected if cancelled with all business of Access Network when connection status, then enters idle condition; If the registration of the authentication by Access Network or can't connect with Access Network then enters unactivated state.
The subfunction unit if passed through the authentication registration of Access Network, can connect with Access Network when unactivated state, then enters idle condition.
The MIHF equipment state moving method of third embodiment of the invention when only the subfunction in MIHF equipment is in connection status, just can carry out MIH as shown in Figure 8.Wherein in the MIHF equipment with connect corresponding example and when carrying out MIH, comprise to switch and prepare, switch and carry out and switching such as finishes at state, and example is by the foundation of subfunction unit and cancel.
Specifically, example is received the message that indication switch to be prepared, as receives and then enter the switching standby condition by the switching initialization request message, and starts corresponding timer.
Example switches the message of carrying out then enters the switching executing state if receive indication when switching standby condition; Cancel the message of MIH or the timer expiry incident takes place if receive indication, then finish this MIH; If receive switching initialization request responding message, comprise the information of agreeing switching in the message, example will remain on MIH and switch standby condition.
Example also starts corresponding timer when switching executing state, switch the message of finishing then enter the switching completion status if receive indication; Equally, cancel the message of MIH or the timer expiry incident takes place, then finish this MIH if receive indication.
Example discharges the resource relevant with MIH after entering and switching completion status, after this finishes this MIH.
The MIHF equipment state moving method of four embodiment of the invention when equally only the subfunction in MIHF equipment is in connection status, just can carry out MIH as shown in Figure 9.Wherein, example corresponding with connection in the MIHF equipment switches standby condition except comprising, switches executing state and the switching completion status when carrying out MIH, also comprise the switching idle condition.Because MIH is the switching of interdepartmental system, compare with general switching, handover delay is longer, the abnormal conditions that switching may run into are more, so make MIHF to carry out differentiated treatment to the various message that occur in switching by division to switching state, which tells effectively is unusual message, thereby carries out corresponding abnormality processing.For example,, should carry out at once and switch relevant action, if but receive to switch and carry out message then, should abandon switching executing state or switch completion status for unusual if receive and switch that to carry out message be normal switching standby condition.
When portable terminal was set up once professional the connection with corresponding Access Network, MIHF equipment was set up an example for this connection, and to switch the initial condition of idle condition as this example.This state is a stable state, connects if example keeps professional, and MIH does not take place, and this example will remain on the switching idle condition always.Under this state, this example will receive and handle number order service, Event Service and information service message, for example configuration link order, scan chain circuit order, link parameter change incident etc., and these processing will can not cause state transition.
Example is released if corresponding business connects when switching idle condition, and then function device is cancelled this example; If receive the message that indication switch to be prepared, as receive and then enter the switching standby condition by the switching initialization request message; If receive the message that indication switch to be carried out then enter the switching executing state.
Example starts corresponding timer when switching standby condition, switch the message of carrying out then enter the switching executing state if receive indication; Cancel the message of MIH or the timer expiry incident takes place if receive indication, then enter the switching idle condition; If receive switching initialization request responding message, comprise the information of agreeing switching in the message, example will remain on MIH and switch standby condition.
Example starts corresponding timer when switching executing state, switch the message of finishing then enter the switching completion status if receive indication; Equally, cancel the message of MIH or the timer expiry incident takes place, then enter the switching idle condition if receive indication.
Example also starts corresponding timer after entering and switching completion status, discharges the resource relevant with MIH, enters the switching idle condition after finishing; Work as timer expiry, also will be automatically brought to the switching idle condition.
According to said method, it is readily appreciated by a person skilled in the art that to mark off subfunction location mode or MIH switching state more or that divide according to different standards as required.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (8)
1. media-independent handoff functionality equipment state moving method, it is characterized in that, comprise at least one subfunction unit in the described function device, each subfunction unit is used to handle and the interface related message of one type service access point, and each described subfunction unit comprises state of activation and unactivated state at least;
Described subfunction unit if passed through the authentication registration of Access Network, can connect with Access Network when unactivated state, then enters state of activation;
Described subfunction unit is when state of activation, if the registration of the authentication by Access Network or can't connect with Access Network then enters unactivated state.
2. media-independent handoff functionality equipment state moving method according to claim 1 is characterized in that described state of activation further comprises idle condition and connection status;
Described subfunction unit professionally is connected then enters connection status if set up with Access Network when idle condition, if the authentication registration not by Access Network or can't connect with Access Network then enter unactivated state;
Described subfunction unit is connected then enters idle condition if cancelled with all of Access Network are professional when connection status, if do not register by the authentication of Access Network or can't connect with Access Network then enter unactivated state;
Described subfunction unit if passed through the authentication registration of Access Network, can connect with Access Network when unactivated state, then enters idle condition.
3. a media-independent handoff functionality equipment state moving method is characterized in that, comprises at least one subfunction unit in the described function device, and each subfunction unit is used to handle and the interface related message of one type service access point; In the described function device with connect corresponding example and switch standby condition, switch executing state and switch completion status carrying out comprising at least when media-independent switches, wherein, described example is by the foundation of subfunction unit and cancel;
Described example receives that the message that the indication switching is prepared then enters the switching standby condition;
Described example switches the message of carrying out then enters the switching executing state if receive indication when switching standby condition;
Described example switches the message of finishing then enters the switching completion status if receive indication when switching executing state.
4. media-independent handoff functionality equipment state moving method according to claim 3, it is characterized in that, described example is when switching standby condition or switching executing state, cancel message or generation timer expiry incident that media-independent switches if receive indication, then finish this media-independent and switch;
After described example enters and switches completion status, discharge with media-independent and switch relevant resource, after this finish this media-independent and switch.
5. media-independent handoff functionality equipment state moving method according to claim 3 is characterized in that described example also comprises the switching idle condition;
Described example is cancelled message or generation timer expiry incident that media-independent switches if receive indication when switching standby condition or switching executing state, then enter the switching idle condition;
After described example enters and switches completion status, discharge with media-independent and switch relevant resource, after this enter the switching idle condition;
Described example switches the message of preparing then enters the switching standby condition if receive indication when switching idle condition, switches the message of carrying out then enters the switching executing state if receive indication.
6. media-independent handoff functionality equipment state moving method according to claim 5, it is characterized in that, when portable terminal is set up once professional the connection with corresponding Access Network, described function device is set up an example for this connection, and to switch the initial condition of idle condition as this example;
Described example is released if corresponding business connects when switching idle condition, and then described function device is cancelled this example.
7. a media-independent handoff functionality equipment is characterized in that, wherein comprises at least one subfunction unit, and each subfunction unit is used to handle and the interface related message of one type service access point;
Comprise state machine in each described subfunction unit, be used for according to the authentication registration situation of corresponding Access Network be connected situation and carry out state transition independently, wherein, the indicated state of state machine of described subfunction unit comprises state of activation and unactivated state, when unactivated state, if passed through the authentication registration of Access Network, can connect with Access Network, then enter state of activation; When state of activation, if the registration of the authentication by Access Network or can't connect with Access Network then enters unactivated state;
The message that each described subfunction unit is received according to the current state processing of living in of oneself state machine.
8. media-independent handoff functionality equipment according to claim 7 is characterized in that, also comprises administrative unit, is used for each subfunction unit of described function device is managed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101394659B (en) * | 2007-09-17 | 2011-04-20 | 华为技术有限公司 | Method for automatic media irrelevant service discovery, apparatus and system thereof |
| CN101730174B (en) * | 2009-05-08 | 2012-10-10 | 中兴通讯股份有限公司 | Method and system for realizing cross-system switching in evolved packet system |
| CN102006574B (en) * | 2011-01-05 | 2013-04-24 | 中国人民解放军理工大学 | Wireless self-organized network-based integrated heterogeneous emergency communication network |
| CN102348245B (en) * | 2011-09-26 | 2013-12-18 | 北京北方烽火科技有限公司 | Processing method and device of S1 handover failure in LTE (Long Term Evolution) system |
| CN106658758A (en) * | 2017-02-10 | 2017-05-10 | 北京小米移动软件有限公司 | State conversion method, state keeping method and device, and user equipment |
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| CN1489340A (en) * | 2002-08-30 | 2004-04-14 | ���Ͽع�����˾ | Integrated wireless access network controller and method for selecting wireless accessing network |
| CN1520198A (en) * | 2003-01-22 | 2004-08-11 | 凌源通讯股份有限公司 | State machine controlled by nodes of data chain |
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| CN1719369A (en) * | 2004-07-09 | 2006-01-11 | 英业达股份有限公司 | Method of authorized use of computer platform axternal communication port and its interface |
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| CN1489340A (en) * | 2002-08-30 | 2004-04-14 | ���Ͽع�����˾ | Integrated wireless access network controller and method for selecting wireless accessing network |
| CN1520198A (en) * | 2003-01-22 | 2004-08-11 | 凌源通讯股份有限公司 | State machine controlled by nodes of data chain |
| CN1598723A (en) * | 2003-09-05 | 2005-03-23 | 费舍-柔斯芒特系统股份有限公司 | State machine function block with a user modifiable state transition configuration database |
| CN1719369A (en) * | 2004-07-09 | 2006-01-11 | 英业达股份有限公司 | Method of authorized use of computer platform axternal communication port and its interface |
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