CN101784112B - Method for realizing integrated network paging mechanism - Google Patents
Method for realizing integrated network paging mechanism Download PDFInfo
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- CN101784112B CN101784112B CN2010101125805A CN201010112580A CN101784112B CN 101784112 B CN101784112 B CN 101784112B CN 2010101125805 A CN2010101125805 A CN 2010101125805A CN 201010112580 A CN201010112580 A CN 201010112580A CN 101784112 B CN101784112 B CN 101784112B
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- paging
- portable terminal
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Abstract
The invention discloses a method for realizing an integrated network paging mechanism. In the method, the network-based paging mechanism is realized; and a paging-domain system structure, a terminal state mode, a mobile detection mechanism and a signaling flow for paging are involved. A mapping server in an integrated network performs unified management on the position information of a terminal, which is favorable for quickly and accurately querying the position of the terminal in the paging. The position of the mobile terminal can be queried without transmitting paging signaling on a wireless link, which saves the resources of the wireless link. The paging mechanism provided by the invention is finished by an access switch router and the mapping server in the integrated network, thereby reducing the participation of the terminal, benefiting the terminals of a plurality of types to access the network and enhancing the expandability of the network.
Description
Technical field
The invention belongs to technical field of the computer network, relate to a kind of method and system of realizing integrated network paging mechanism.
Background technology
Introduce paging mechanism and can effectively reduce the signaling consumption in the moving process, when portable terminal need not send within a certain period of time or receive packet, the terminal can get into idle condition, and it is unnecessary that signaling is upgraded in frequently mobile and position that send.Therefore, the user who is in idle condition carries out the resource that the position renewal can be wasted network.In order to reduce the signaling burden of network, the terminal that is in idle condition needn't be at every turn all to its current location of network registry when mobile in certain zone.When packet sends to the terminal that is in idle condition, can be through the definite position of paging mechanism inquiry terminal.
The tradition the Internet supports that paging mechanism is on the basis of mobile IPv 4 and mobile IP v 6, to realize, its basic realization mechanism is following.Suppose Foreign Agent in the network (Foreign Agent, FA) FA1, FA2, FA3 form a paging territory, (Mobile Node MN) roams into FA3 from FA1, does not carry out location update operations to be in the portable terminal of idle condition.(Home Agent when HA) receiving the packet that sends to MN, is transmitted to FA1 earlier as the local agency.FA1 inquires MN and is in idle condition, sends paging request message for FA2, FA3 in the same paging territory, and FA1, FA2, FA3 send broadcast and search the position, terminal on Radio Link.MN receives that paging request message carries out the position to HA and upgrade, and HA is transmitted to FA3 with packet.Then, FA3 sends paging request response message to FA1, and the packet of FA1 forwarding cache is given MN.This is to have following major defect moving the paging mechanism of realizing on the IP basis:
1. exist triangle routing issue: HA to move scheduler before according to MN and send packet to old FA, old FA is transmitted to MN again.The problem that has data packet disorder simultaneously: MN receives paging request message after HA carries out the position renewal, and the packet that HA directly sends to MN possibly arrive MN prior to the packet that old FA transmits.
2. the protocol stack that needs to revise the terminal could be supported paging mechanism.Because the number and the type at terminal are extremely various, the protocol stack of revising all terminals will be the work that cost is very high.
3. the zone of network does not have unified planning; And there is not effective location management entity; Be unfavorable for when carrying out paging fast; Localisation of mobile terminals exactly, and be unfavorable for that network manager effectively controls and manage the mobile behavior at terminal, thus increased network manager the network operation difficulty, improve the operation cost of network.
4. call signaling need be broadcasted on Radio Link, just can inquire the position of portable terminal, has taken valuable air-link resources.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of implementation method of integrated network paging mechanism.
Wherein, The positional information of portable terminal by the access TSR in the integrated network (AccessSwitch Router, ASR) and mapping server (Identifiers Mapping Server IDMS) preserves; Initiate paging by mapping server; After inquiring the position of portable terminal, the access TSR by Correspondent Node sends packet again, and packet is transmitted according to traditional routing mode.Utilize signaling to set up communication link earlier, transmit packet again.
Paging mechanism is accomplished by access TSR in the integrated network and mapping server, and the terminal need not to revise protocol stack.
The invention allows for the paging architecture of integrated network.Said integrated network is divided into a plurality of mappings territory according to the position of mapping server, and the identity information at this terminal, territory and the mapping relations between the positional information are stored in each local mapping territory of mapping server management.The paging territory is divided on the basis in mapping territory, and each paging territory is made up of several access TSRs, and uses unique paging domain identifier.
The present invention has also designed the mode of the paging that with the network is the basis.Mapping server is initiated paging request message, and the positional information of inquiry, locating terminal inserts TSR and is responsible for responding paging request.When mapping server received the message of searching the portable terminal accurate location, mapping server was according to its state model of access sign inquiry of portable terminal.If portable terminal is a state of activation, then mapping server returns to the access TSR with the exchange Route Distinguisher of marking terminal positional information.If portable terminal is an idle condition, mapping server sends paging request message for all the access TSRs in this paging territory according to the paging domain identifier of portable terminal in the mapping table.The access TSR of the current connection in terminal is received paging request message, is that portable terminal distributes the exchange Route Distinguisher, and reports and give mapping server, and this message is also as the response of paging request message.
The state model at said terminal is divided into idle condition and state of activation, by the state model that inserts the common maintenance terminal in TSR, mapping server and terminal itself, utilizes timer consistent with state advertisement mechanism hold mode.When portable terminal did not send within a certain period of time or receives packet, portable terminal got into idle condition, inserted the idle condition of TSR to this terminal of mapping server announcement.If communication is initiated at the terminal, then change state of activation into from idle condition, the state model that inserts the TSR terminal is set to state of activation, and announces and give mapping server, and its User Status timer is re-set as maximum.Insert TSR at every turn for behind the portable terminal forwarding packet, the state model that inserts terminal on the TSR keeps state of activation constant, and its User Status timer is updated to maximum.In addition, terminal itself also is provided with timer, preserves the state model at terminal.
For the terminal of different mode, its position updating strategy is different.The terminal that is in idle condition moves to new access TSR, and new access TSR needn't be given mapping server for it distributes exchange Route Distinguisher and transmission to upgrade signaling.The terminal that the terminal that is in state of activation moves to new access TSR or is in idle condition moves to new paging territory; New access TSR will be that it distributes exchange Route Distinguisher, and will comprise the signaling that inserts sign and exchange Route Distinguisher and send to mapping server.
The present invention has also designed the mobile testing mechanism of supporting paging, comprise broadcasting, differentiate insert between TSR in the same paging territory move, differentiate between different pagings territory mobile and check four steps such as the SOT state of termination:
Step 1: broadcasting: insert the TSR cycle and send network notifications, notice message comprises access TSR sign and paging domain identifier.
Step 2: differentiate to insert between TSR in the same paging territory and move: portable terminal is received network notifications message, compares the access TSR sign in notice message and the database earlier.If consistent, show that then the terminal is not mobile, terminal records receives the time and the number of message.If inconsistent, explain that then the terminal has taken place to move, store in the database inserting the TSR sign in the notice message.
Step 3: differentiate between different pagings territory and move: the paging domain identifier in comparing notice message and storing; If the paging domain identifier is different; Explain that then the terminal has moved to another paging territory; Paging domain response message is sent at the terminal, and marking terminal is to move between the paging territory in the message, and storage simultaneously inserts TSR sign and paging domain identifier; If the paging domain identifier is identical, terminal storage inserts the TSR sign, also will send paging domain response message simultaneously, comprises terminal current states pattern in the message content.
Step 4: the inspection SOT state of termination: insert the paging domain response message that TSR receives that the terminal is sent; Judge earlier whether the terminal is to move between the paging territory; If; Then, the exchange Route Distinguisher and the current place paging domain identifier at terminal are reported to mapping server to terminal distribution exchange Route Distinguisher; Otherwise judge the state model at terminal,, then, the exchange Route Distinguisher at terminal is reported to mapping server also for it distributes the exchange Route Distinguisher if the terminal is a state of activation; If the terminal is an idle condition, then insert TSR and needn't distribute the exchange Route Distinguisher and report mapping relations for it, only require that the record terminal is linked into this territory.
The present invention is a kind of based on network paging mechanism, makes network manager quick easily, searches portable terminal accurately, and can save air-link resources, supports the polytype terminal, makes full use of the resource of network.
Description of drawings
Fig. 1 is the sketch map of integrated network paging architecture of the present invention;
The definition sketch map of the map information clauses and subclauses of the integrated network mapping server of Fig. 2;
The definition sketch map of the map information clauses and subclauses of the integrated network insertion TSR of Fig. 3;
Fig. 4 is the flow chart that the mobility of the specific embodiment of the invention detects;
Fig. 5 is the position updating process flow chart of the multi-home terminal of the specific embodiment of the invention.
Reference numeral:
1-shines upon the territory;
11-inserts TSR;
12-broad sense TSR;
The 13-mapping server;
21,22-paging territory;
The 30-portable terminal.
Embodiment
Embodiment one
Integrated network at first is divided into a plurality of mappings territory according to the position of mapping server, and Fig. 1 has only drawn a mapping territory 1.The mapping relations between local terminal identity information and the positional information are being stored in mapping server 13 management mapping territories 1.And mapping territory 1 is divided into 2 paging territories 21,22, and each paging territory is made up of 2 access TSRs, and with unique paging domain identifier.
The definite of paging domain scope accomplished by network manager; The many factors of needs consideration (such as, the density distribution of mobile node, the liveness of node and mobility etc.); Upgrade signaling in order to reduce the position as far as possible, should guarantee that most of mobile nodes only move in a paging domain.The range size of paging domain influences the expense of signaling, if the zone is excessive, then each call terminal all can send a large amount of call signalings.If the zone is too small, the probability that switches is moved at the terminal in same paging territory just little, and it is just big to send the probability that upgrades signaling in the position, can not reduce the cost of signaling effectively.
Fig. 2 is a map information clauses and subclauses sketch map in the mapping server.Wherein, " insert and identify " identity information of sign GC group connector; The positional information of " exchange Route Distinguisher " sign GC group connector, its access TSR that connects by the terminal is the exchange Route Distinguisher of its distribution; " insert the TSR sign " and represent the access TSR that the terminal connects; The residing state in " SOT state of termination pattern " expression terminal is divided into idle pulley and enable mode; Paging territory, place, " paging domain identifier " expression terminal.The paging domain identifier can be linked to a paging domain list, and it comprises all the access TSRs in this paging territory.
When mapping server received the message of searching the portable terminal accurate location, mapping server was according to its state model of access sign inquiry of MN.If MN is a state of activation, mapping server will comprise the response message that exchanges Route Distinguisher and return to the access TSR of initiating inquiry.If MN is an idle condition, mapping server sends paging request message for all the access TSRs in this paging territory according to the paging domain identifier of MN in the mapping table.
Fig. 3 is for inserting the sketch map of TSR mapping table.Wherein, " insert sign " and indicate that the access of GC group connector identifies; The positional information of " exchange Route Distinguisher " sign GC group connector, its access TSR that connects by the terminal is the exchange Route Distinguisher of its distribution; The residing state in " SOT state of termination pattern " expression terminal is divided into idle condition and state of activation; Idle condition is changed at " state model timer " expression terminal into from state of activation the time interval.
" the state model timer " of the present invention in inserting TSR is when being 0, and portable terminal gets into idle condition, inserts the idle condition of TSR to this terminal of mapping server announcement.If communication is initiated at the terminal, then change state of activation into from idle condition, the state model that inserts the TSR terminal is set to state of activation, and announces and give mapping server, and its " state model timer " is re-set as maximum.Insert TSR at every turn for behind the portable terminal forwarding packet, the state model that inserts terminal on the TSR keeps state of activation constant, and " state model timer " is updated to maximum.
Embodiment two
Process shown in Figure 4, that the mobility of the integrated network terminal detects.Starting up of terminal carries out initialization S401 is set, and receives the network notifications S402 that inserts the transmission of TSR cycle, and notice message comprises access TSR sign and paging domain identifier.Portable terminal is received network notifications message, compares the access TSR sign S403 in notice message and the database earlier.If consistent, show that the terminal is not mobile, terminal records receives the time and the number of message.If inconsistent, explain that the terminal has taken place to move, store in the database inserting the TSR sign in the notice message, and compare in the notice message and the paging domain identifier S404 of storage.If the paging domain identifier is different, explain that the terminal has moved to another paging territory, paging domain response message is sent at the terminal, and marking terminal is to move between the paging territory in the message, after the access TSR is received response message, is terminal distribution exchange Route Distinguisher; If the paging domain identifier is identical, paging domain response message also will be sent in the terminal, comprise terminal current states pattern in the message content; Insert TSR and receive the state model at message determining terminal; If the terminal is a state of activation,, reports and give mapping server for it distributes the exchange Route Distinguisher; If the terminal is an idle condition, the record terminal is linked into this territory.
The time of mobile terminal records network notifications, if do not receive network notifications within a certain period of time, the terminal is thought and has been left this access TSR.Simultaneously, the number of also recorder message of portable terminal, receive some after, send response message and give and insert TSR, keep connection status.
Embodiment three
Shown in Figure 5, the message flow of integrated network paging mechanism.Portable terminal is started shooting in paging territory 1, detect the network notifications that ASR1 sends after, send to ASR1 and to insert request message.ASR1 is that MN distributes the exchange Route Distinguisher, and mapping relations are reported to mapping server S501.The mapping relations of mapping server store M N and the paging domain identifier at its place are returned and are reported mapping relations response message S502.When MN and other-end communicate, according to the separate mapping mechanism Data transmission bag of integrated network.In the communication process, the state model timer of ASR1 is reset, and timer picked up counting and finishes up to the time after communication was accomplished, and the state model at terminal is set to the free time.Afterwards, ASR1 sends idle condition notice message S503 will for the mapping server in the mapping territory.When the MN that is in idle pulley switches to ASR2 from ASR1; MN receives that sending response message after the network notifications of ASR2 gives ASR2; But ASR2 does not distribute the exchange Route Distinguisher for MN, can not report mapping relations to mapping server yet, has been linked into ASR2 but will identify MN.
(Correspondent Node CN) will communicate by letter with MN, sends packet S504 to the ASR4 of its access when correspondent node.Owing to there are not the mapping relations of MN on the ASR4, ASR4 need arrive the mapping relations S505 that inquiry MN on the server in territory is shone upon at the MN place.Mapping server inquires MN and is in idle pulley, and obtains the paging domain identifier at MN place, and all in the paging territory insert TSR ASR1, ASR2, ASR3 transmission paging request message S506.ASR2 receives paging request message, is that MN distributes the exchange Route Distinguisher, and reports mapping relations and give mapping server, and this message is also as the response S507 of paging request.Mapping server sends to ASR2 and reports mapping relations response message S508, sends inquiry MN response message S509 to ASR4.ASR4 receives inquiry response, and the access sign of sending CN in the packet is mapped as the exchange Route Distinguisher, is transmitted to the ASR2 of the current connection of MN.ASR2 receives packet, and the mapping relations S510 of reverse query communication opposite end receives S511 behind the inquiry response, is mapped as the exchange Route Distinguisher in the packet and inserts sign, accomplishes both sides' proper communication.
In addition, insert between TSR and the terminal and also want timed sending updating location information signaling, let the access TSR know whether state model and it of MN leave this territory.Like this, arrive even insert the timing of SOT state of termination pattern in the TSR, the access TSR detects the terminal through the updating location information signaling and leaves this territory, also can not send the idle condition notice message.Be in state of activation on the TSR because the terminal also possibly inserted at other, avoided wrong state advertisement.
Claims (9)
1. a method that realizes integrated network paging mechanism is characterized in that,
In said network by the positional information of mapping server managing mobile terminal;
Said status of mobile terminal pattern is idle condition or state of activation;
Insert the position that TSR detects portable terminal;
Said mapping server obtains the positional information of portable terminal through said access TSR;
Said paging mechanism is that when mapping server received the message of searching the portable terminal accurate location, mapping server was inquired about its state model according to the access sign of portable terminal:
If portable terminal is a state of activation, mapping server will comprise the response message that exchanges Route Distinguisher and return to the access TSR;
If portable terminal is an idle condition, mapping server sends paging request message for all the access TSRs in this paging territory according to the paging domain identifier of portable terminal in the mapping table; The access TSR of the current connection of portable terminal is received paging request message, is that this portable terminal distributes exchange Route Distinguisher, and reports and give mapping server, and this message is also as the response of paging request message; Mapping server will comprise the response message that exchanges Route Distinguisher again and return to the access TSR of initiating inquiry.
2. the method for claim 1 is characterized in that, said paging mechanism is accomplished by access TSR in the integrated network and mapping server.
3. the method for claim 1 is characterized in that, said access TSR detects the position of portable terminal, may further comprise the steps:
Step 1: insert TSR and periodically send and comprise himself and belong to the network notifications of paging domain identifier with it;
Step 2: portable terminal differentiates whether moving between TSR takes place to insert in the same paging territory;
Step 3: portable terminal differentiates whether take place to move between different pagings territory, and sends paging domain response message to inserting TSR;
Step 4: insert TSR and receive above-mentioned paging domain response message; Judge whether portable terminal is to move between the paging territory; If distribute the exchange Route Distinguisher for this portable terminal, and should identify and current place paging domain identifier is reported to mapping server;
Otherwise judge the status of mobile terminal pattern,,, and should identify report to mapping server for it distributes the exchange Route Distinguisher if be state of activation;
If the terminal is an idle condition, inserts TSR record portable terminal and be linked into this territory.
4. the method for claim 1; It is characterized in that; If portable terminal is initiated communication, then change state of activation into from idle condition, insert this status of mobile terminal pattern of TSR and be set to state of activation; And announce and give mapping server, its User Status timer is re-set as maximum; Insert TSR at every turn for behind the portable terminal forwarding packet, keep the state of activation of this portable terminal, its User Status timer is updated to maximum.
5. the method for claim 1 is characterized in that, said integrated network is divided into a plurality of mappings territory according to the position of mapping server.
6. method as claimed in claim 5 is characterized in that, the identity information of this territory portable terminal and the mapping relations between the positional information are stored in each local mapping territory of mapping server management.
7. like claim 5 or 6 described methods, it is characterized in that, in the mapping territory, divide the paging territory, each paging territory is made up of several access TSRs, and uses unique paging domain identifier.
8. like claim 1 or 4 described methods, it is characterized in that said portable terminal is provided with timer, preserve this status of mobile terminal pattern.
9. like claim 1 or 4 described methods, it is characterized in that TSR, mapping server and this portable terminal itself are common to be safeguarded said status of mobile terminal pattern by inserting, and utilizes timer consistent with state advertisement mechanism hold mode.
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| CN101119312A (en) * | 2007-09-13 | 2008-02-06 | 北京交通大学 | Method for implementing integrated network mobile switch management |
| CN101123536A (en) * | 2007-09-19 | 2008-02-13 | 北京交通大学 | Method for managing integrated network locations |
| CN101478552A (en) * | 2009-02-19 | 2009-07-08 | 北京交通大学 | Position management method and system implementing multi-home terminal in integrated network |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119312A (en) * | 2007-09-13 | 2008-02-06 | 北京交通大学 | Method for implementing integrated network mobile switch management |
| CN101123536A (en) * | 2007-09-19 | 2008-02-13 | 北京交通大学 | Method for managing integrated network locations |
| CN101478552A (en) * | 2009-02-19 | 2009-07-08 | 北京交通大学 | Position management method and system implementing multi-home terminal in integrated network |
Non-Patent Citations (1)
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| 翟羽佳等.一体化网络下移动性管理的索引结构模型.《电子学报》.2009,第37卷(第4期),第706-712页. * |
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