CN102340821B - A kind of connection control method of MTC device and system - Google Patents

A kind of connection control method of MTC device and system Download PDF

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Publication number
CN102340821B
CN102340821B CN201010233548.2A CN201010233548A CN102340821B CN 102340821 B CN102340821 B CN 102340821B CN 201010233548 A CN201010233548 A CN 201010233548A CN 102340821 B CN102340821 B CN 102340821B
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mtc
mtc device
mark
information
compression process
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CN102340821A (en
Inventor
支春霞
李志军
吴昊
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ZTE Corp
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ZTE Corp
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Priority to CN201010233548.2A priority Critical patent/CN102340821B/en
Priority to PCT/CN2011/076319 priority patent/WO2012010040A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/667—Preventing unauthorised calls from a telephone set
    • H04M1/67—Preventing unauthorised calls from a telephone set by electronic means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses the connection control method of a kind of machine type communication (MTC) equipment, comprising: network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device; MTC device is according to the information after compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.The invention also discloses a kind of access control system of MTC device.By the present invention, solve because MTC identifies the problem taking a large amount of broadcast resource.

Description

A kind of connection control method of MTC device and system
Technical field
The present invention relates to machine type communication (MTC, the Machine TypeCommunication) technology in network service, particularly relate to a kind of connection control method and system of MTC device.
Background technology
Along with the development of mobile network service and automated control technology, there is a kind of machine type communication mode, also claim the communication mode of Machine To Machine (M2M, Machine To Machine), in this communication mode, the side that has at least participating in communication is machinery equipment.
The M2M definition of narrow sense is the communication of machine to machine, but in broad terms, and it is core that M2M comprises with machine terminal intelligent interaction, the application of networking and service.M2M is access means based on intelligent machine terminal, with communication, can provide informatization resolve scheme for client, for meeting the information system requirement of client to aspects such as monitoring, command scheduling, data acquisition and measurements.M2M can be applied to sector application (as traffic monitoring, warning system, rescue at sea, automatic vending machine, driving are paid), domestic. applications (as automatic data logging, temperature control) and individual application (as life detection, remote diagnostics) etc.
The communication object of M2M is machine, and communication behavior is Automated condtrol, and some accesses in the initiation namely communicated, termination and communication process and the control of restriction are all behaviors of automation.This behavior, depend in M2M communication machine (terminal namely in M2M communication) covenant of works bundle and control, the behavior of the terminal in M2M communication is by service contracting data constraint, and network manages the terminal in M2M communication according to service contracting data.
In machine type communication, most typical communication mode is the communication between terminal and application server, and this terminal is called as MTC device (MTC device), and application server is called as MTC server (MTC Server).
Under 2G/3G/LTE access, M2M communication main with (PS, the Packet Service) network that divides into groups as bottom bearer network, realize the operation layer communication between MTC device and MTC server.Fig. 1 is the grouping system (EPS that in prior art, M2M communication entity is linked into evolution, Evolved PacketSystem) configuration diagram, as shown in Figure 1, bottom bearer network comprises: the universal mobile telecommunications system land radio access web (E-UTRAN of evolution, Evolved Universal Terrestrial Radio AccessNetwork), mobile management entity (MME, Mobility Management Entity), gateway (S-GW, Serving Gateway), grouped data network gateway (P-GW, Packet Data NetworkGateway), home subscriber server (HSS, Home Subscriber Server), "Policy and Charging Rules Function entity (PCRF, Policy and Charging Rules Function).Wherein, the main network elements of E-UTRAN is evolved base station (eNodeB, Evolved NodeB).
In FIG, MME is responsible for the related work of the chain of command such as contextual management in mobile management, the process of Non-Access Stratum signaling and user's mobile management; S-GW is the accessing gateway equipment be connected with E-UTRAN, is responsible for forwarding data between E-UTRAN and P-GW, and carries out buffer memory to pending datas such as pagings; P-GW is then the borde gateway of EPS and packet data network (PDN, Packet Data Network), be responsible for PDN access and between EPS and PDN the function such as forwarding data; PCRF is "Policy and Charging Rules Function entity, it is by receiving interface Rx and carrier network agreement (IP, Internet Protocol) business network be connected, obtain business information, in addition, it can also be connected with the gateway device in network by Gx interface, be responsible for the foundation initiating IP carrying, ensure the service quality (QoS, Qualityof Service) of business datum, and carry out charging control; HSS is for providing the management of the subscription data of user, and user is linked into the management of the important contextual information in network.
In addition, MTC Server can serve as the role of Application Function (AF, Application Function), is connected with PCRF by Rx interface, to realize the control to carrying; MTC Server can also serve as the role of session initiation protocol application server (SIP AS, Session Initiation Protocol ApplicationServer), is connected, with access application service data by Sh interface with HSS.
In FIG, MTC UE is linked in EPS network by E-UTRAN (eNodeB), after being assigned with IP address, can set up IP tunnel between MTC UE and MTC Server, thus realizes communicating with the upper-layer service between MTC Server.The IP tunnel set up between MTC UE and MTC Server is an IP tunnel in logic, and its physical pathway is passed through: eNodeB, S-GW, P-GW.
At present, a kind of mode realizing M2M communication is that IP tunnel between MTC UE and MTC Server sets up an operation layer interface protocol, by this operation layer interface protocol, MTC UE and MTCServer interactive service data, meanwhile, MTC Server also passes through this operation layer protocol realization to the control of MTC UE.
Connected by the IP between MTC UE and MTC Server, the data communication between MTC UE and MTCServer can be realized, but MTC monitoring demand is difficult to be achieved in this IP connection: MTCServer needs the running status monitoring MTC UE, dynamically know the state that MTC UE is current in time, when the state that MTC UE is current changes, MTC Server needs to obtain notice in time.The state variation of these MTCUE can comprise: MTC UE from network attachment removal, MTC UE enters notconnect state, MTC UE releases wireless connections, the current location of MTC UE there occurs change etc.The change of the state of these MTC UE, be referred to as MTC event, usually can at attaching position register (HLR, HomeLocation Register)/HSS MTC subscription data in definition need to monitor which MTC event, and be handed down to Serving GPRS Support Node (SGSN, Servicing GPRS Support Node)/MME by the flow process being attached to network of MTC UE by HLR/HSS.And for the detection of MTC event, usually need the network entity of core net to detect, the network element detecting MTC event as being responsible in EPS network can be: MME/S-GW/P-GW etc., general packet radio service (GPRS, General Packet RadioService) network element of being responsible for detecting MTC event in network can be SGSN/ Gateway GPRS Support Node (GGSN, Gateway GPRS Support Node) etc.After MTC event is detected, usually need to report MTC Server, so that MTC Server knows the operation conditions of MTC UE in time.
When network side occurs congested, existing congestion control flow process as shown in Figure 2, mainly comprises the following steps:
Step 201, MME/SGSN is according to the loading condition of current network, send overload to wireless access network (RAN, Radio Access Network) node and produce (OVERLOAD START) message, trigger the access control process to MTC device.
Different according to the granularity of access control, carry different access control information in message.When access control is for MTC group (MTC Group), OVERLOAD START message carries group mark (Group ID) or APN (APN, Access Point Name) be associated.
Step 202, after RAN node receives these information, eating dishes without rice or wine, broadcast Group ID or APN forbids access.
Step 203, receives the follow-up access request that can not be initiated to these Group ID or APN of MTC device of broadcast, to avoid further congested generation.
But when needs forbid that multiple Group accesses, prior art needs to broadcast Group ID list or APN list in broadcast, and this can take a large amount of broadcast resources, is unacceptable for network.
Summary of the invention
In view of this, main purpose of the present invention is the connection control method and the system that provide a kind of MTC device, to solve because broadcast Group ID list or APN list take the problem of a large amount of broadcast resource.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the connection control method of a kind of machine type communication (MTC) equipment, the method comprises:
Network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after described compression process is sent to MTC device;
Described MTC device is according to the information after described compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.
Described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device, is specially:
Described network equipment determines the same bits position information of the MTC mark forbidding accessing, and described same bits position information is sent to described MTC device by broadcast;
Accordingly, described MTC device is according to the information after compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request, be specially:
The same bits position information of reception identifies with the MTC self preserved by described MTC device mates, and determines self whether to allow to initiate access request according to matching result.
The method comprises further: described same bits position information, with the form of asterisk wildcard, is sent to described MTC device by broadcast by described network equipment.
Described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device, is specially:
Described network equipment carries out compression coding to the MTC mark of forbidding accessing, and the MTC mark after compression coding is sent to described MTC device by broadcast;
Accordingly, described MTC device is according to the information after compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request, be specially:
Described MTC device decompresses to the information in broadcast, and is identified by the MTC after decompressing, and the MTC preserved with self identifies and mates, and determines self whether to allow to initiate access request according to matching result.
Described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device, is specially:
Described network equipment carries out modulo operation to the MTC mark of forbidding accessing, and the information after described modulo operation is sent to described MTC device;
Accordingly, described MTC device is according to the information after compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request, be specially:
Described MTC device is according to the information after described modulo operation, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.
Described network equipment comprises: mobile management network element and wireless access network (RAN) node;
Accordingly, described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device, is specially:
Described mobile management network element carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to RAN node, and the information after compression process is sent to MTC device by broadcast by described RAN node;
Or the MTC mark of forbidding accessing is sent to described RAN node by described mobile management network element, described RAN node carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device by broadcast.
Described network equipment comprises: RAN node;
Accordingly, described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device, is specially:
What described RAN node was preserved self forbids that the MTC mark accessed carries out compression process, and the information after compression process is sent to MTC device by broadcast.
Present invention also offers a kind of access control system of MTC device, this system comprises: network equipment and MTC device, wherein,
Described network equipment, for carrying out compression process to the MTC mark of forbidding accessing, and sends to MTC device by the information after described compression process;
Described MTC device, for compressing the information after processing according to described, and the MTC mark of self preserving, determine self whether to allow to initiate access request.
Described network equipment is further used for, and determines the same bits position information of the MTC mark forbidding accessing, and described same bits position information is sent to described MTC device by broadcast;
Accordingly, described MTC device is further used for, and the same bits position information of reception is identified with the MTC self preserved and mates, and determines self whether to allow to initiate access request according to matching result.
Described network equipment is further used for, and with the form of asterisk wildcard, described same bits position information is sent to described MTC device by broadcast.
Described network equipment is further used for, and carries out compression coding to the MTC mark of forbidding accessing, and the MTC mark after compression coding is sent to described MTC device by broadcast;
Accordingly, described MTC device is further used for, and decompresses to the information in broadcast, and is identified by the MTC after decompressing, and the MTC preserved with self identifies and mates, and determines self whether to allow to initiate access request according to matching result.
Described network equipment is further used for, and carries out modulo operation, and the information after described modulo operation is sent to described MTC device to the MTC mark of forbidding accessing;
Accordingly, described MTC device is further used for, according to the information after described modulo operation, and the MTC mark of self preserving, determine self whether to allow to initiate access request.
Described network equipment comprises: mobile management network element and RAN node; Wherein,
Described mobile management network element, for carrying out compression process to the MTC mark of forbidding accessing, and sends to RAN node by the information after compression process; Described RAN node, for sending to MTC device by the information after compression process by broadcast;
Or described mobile management network element, for sending to described RAN node by the MTC forbidding accessing mark; Described RAN node, for carrying out compression process to the MTC mark of forbidding accessing, and sends to MTC device by the information after compression process by broadcast.
Described network equipment comprises: RAN node, carries out compression process, and the information after compression process is sent to MTC device by broadcast for the MTC forbidding the accessing mark of preserving self.
The connection control method of a kind of MTC device provided by the present invention and system, by network equipment, compression is carried out to the MTC mark of forbidding accessing and process (comprising: get same bits position information, compression coding, modulo operation etc.), and by the information broadcasting after compression process to MTC device, thus avoid taking a large amount of broadcast resources of eating dishes without rice or wine.
Accompanying drawing explanation
Fig. 1 is the configuration diagram that in prior art, M2M communication entity is linked into EPS;
Fig. 2 is congestion control flow chart of the prior art;
Fig. 3 is the flow chart of the connection control method of a kind of MTC device of the present invention;
Fig. 4 is the flow chart of the connection control method of MTC device in the embodiment of the present invention one;
Fig. 5 is the flow chart of the connection control method of MTC device in the embodiment of the present invention two;
Fig. 6 is the flow chart of the connection control method of MTC device in the embodiment of the present invention three;
Fig. 7 is the flow chart of the connection control method of MTC device in the embodiment of the present invention four;
Fig. 8 is the flow chart of the connection control method of MTC device in the embodiment of the present invention five;
Fig. 9 is the flow chart of the connection control method of MTC device in the embodiment of the present invention six;
Figure 10 is the flow chart of the connection control method of MTC device in the embodiment of the present invention seven;
Figure 11 is the flow chart of the connection control method of MTC device in the embodiment of the present invention eight;
Figure 12 is the flow chart of the connection control method of MTC device in the embodiment of the present invention nine.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
For solving because broadcast Group ID list or APN list take the problem of a large amount of broadcast resource, the connection control method of a kind of MTC device provided by the present invention, as shown in Figure 3, comprises the following steps:
Step 301, network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device.
Step 302, MTC device is according to the information after this compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.Wherein, so-called MTC mark includes but are not limited to Group ID or APN.
Based on said method, the connection control method of a kind of feasible MTC device of the embodiment of the present invention is: network equipment determines the same bits position information of the MTC mark forbidding accessing, and this same bits position information is sent to MTC device by broadcast; The same bits position information of reception identifies with the MTC self preserved by MTC device mates, and determines self whether to allow to initiate access request according to matching result.
Group ID or APN is designated for MTC, Group ID or APN distributed due to operator has some similarity, namely multiple Group ID or APN has some identical bits, therefore, RAN node, when broadcasting Group ID list or APN list, only can be broadcasted the identical bit of these Group ID or APN and identify the multiple Group needing restriction access.After MTC device receives the bit of broadcast, contrast Group ID or APN self preserved, judge whether to initiate access request.
In addition, the network equipment of the present embodiment is made up of the mobile management network element of network side and RAN node, and wherein, the mobile management network element in Long Term Evolution (LTE, Long Term Evolution) system is MME, and RAN node is eNodeB; At universal mobile telecommunications system (UTMS, Universal MobileTelecommunications System) in mobile management network element be SGSN, RAN node is radio network controller (RNC, Radio Network Controller).
Concrete access control flow process, as shown in Figure 4, mainly comprises the following steps:
Step 401, MME/SGSN is according to current network load situation, and the similitude of Group ID or APN, determines the same bits position information needing to forbid Group ID or APN accessed.
Step 402, MME/SGSN sends OVERLOAD START message to RAN node, carries the same bits position information of forbidding Group ID or APN accessed in message.
Step 403, the same bits position information of Group ID or APN accessed is forbidden in RAN node broadcast.
Step 404, after MTC device receives the same bits position information in broadcast, contrast self preserve Group ID or APN, if with the same bits position information match received, then do not initiate access request; Otherwise, can access request be initiated.
Such as: Group ID identifies composition by Mobile Country Code MCC (MCC, Mobile Country Code)+Mobile Network Code (MNC, Mobile Network Code)+area identification+group.If need to forbid that the multiple Group accessed belong to the same area of same operator, so MME/SGSN carries MCC+MNC+ area identification in the OVERLOAD START message sent to RAN node, replaces GroupID list with this.Same, RAN node also only broadcasts MCC+MNC+ area identification in broadcast.After MTC device receives broadcast, contrast self preserve Group ID, if MTC device self preserve Group ID in MCC+MNC+ area identification and broadcast in carry match, then do not initiate access request; Otherwise, can access request be initiated.
Again such as: Group ID comprises the flag of MTC feature (MTC feature), the current signing MTC feature or MTC feature of this MTCGroup is indicated to combine.When carrying out access control to multiple Group with certain MTC feature or MTC feature combination, MME/SGSN carries the flag that MTC feature or MTC feature combines in the OVERLOAD START message sent to RAN node; Same, the flag of RAN node also only broadcast MTC feature or MTC feature combination in broadcast.After MTC device receives broadcast, contrast self preserve Group ID, if MTC device self preserve Group ID in MTC feature or MTC feature combine flag and broadcast in carry match, then do not initiate access request; Otherwise, can access request be initiated.Suppose in Group ID, have 3 bits to combine for identifying signing MTC feature or MTC feature, 001 mark Hypomobility (Low Mobility), 010 mark can only initiate caller (MO Only) and time controling (Time Controlled).If when network needs the Group forbidding Low Mobility characteristic to access, RAN node broadcast forbids that the MTC feature accessed is 001, the MTC feature bit of the Group ID that MTC device inspection self is preserved whether with receive identical, if identical, then do not initiate access request; Otherwise, can access request be initiated.
It should be noted that, in the embodiment sending same bits position information, network equipment needs the position of this same bits position information residing in MTC identifies of making an appointment between MTC device, only in this way, MTC device, after receiving same bits position information, just can know which information in identifying with the MTC self preserved is mated.Certainly, if network equipment adopts the form of asterisk wildcard to send this same bits position information, the position that so just this same bits position information is residing in MTC identifies without the need to making an appointment with MTC device again.For above-mentioned " MCC+MNC+ area identification+group mark ", same bits position information is " MCC+MNC+ area identification ", and same bits position its structure of information so sent with asterisk wildcard form is " MCC+MNC+ area identification+* * "; Wherein, the information that " * * " carries is the same bits position information of sky, that is asterisk wildcard form transmission, and its structure is identical with the data structure that MTC identifies, and just in the position except the information of same bits position, carry information is empty; When data structure is identical, MTC device also just becomes relatively simple to the matching operation that MTC identifies.
The access control flow process of another kind of feasible MTC device, as shown in Figure 5, mainly comprises the following steps:
Step 501, MME/SGSN, according to current network load situation, determines GroupID or APN needing to forbid accessing.
Step 502, MME/SGSN sends OVERLOAD START message to RAN node, carries Group ID or APN forbidding accessing in message.
Step 503 ~ 504, RAN node determines the same bits position information of forbidding Group ID or APN accessed, and the same bits position information of Group ID or APN accessed is forbidden in broadcast.
Step 505, after MTC device receives the same bits position information in broadcast, contrast self preserve Group ID or APN, if with the same bits position information match received, then do not initiate access request; Otherwise, can access request be initiated.
Embodiment illustrated in fig. 5ly be with the difference of Fig. 4, the extraction of its same bits position information operates in RAN node and performs (RAN node obtains Group ID or APN needing to forbid accessing from MME/SGSN), and other operations are substantially similar.
In addition, network equipment in the present embodiment also can only include RAN node, the access control flow process of so corresponding a kind of feasible MTC device is: what RAN node was preserved self forbids that the MTC mark accessed carries out extracting the operation of same bits position information, and this same bits position information is sent to MTC device by broadcast.Concrete operations flow process as shown in Figure 6, mainly comprises the following steps:
Step 601, RAN node from self preserve forbid access Group ID or APN extract same bits position information.
Wherein, Group ID or APN forbidding accessing of RAN node self preservation, normally obtains in mobile management flow process or session management flow process.
Step 602, RAN node by this same bits position information broadcasting to MTC device.
Step 603, after MTC device receives the same bits position information in broadcast, contrast self preserve Group ID or APN, if with the same bits position information match received, then do not initiate access request; Otherwise, can access request be initiated.
Embodiment illustrated in fig. 6ly to be with the difference of Fig. 5, to forbid that Group ID or APN accessed no longer is provided by mobile management network element, but obtained in mobile management flow process or session management flow process by RAN node and preserve.In this embodiment, same bits position information with the form of asterisk wildcard, can be sent to MTC device by RAN node equally.
The connection control method of the another kind of feasible MTC device of the embodiment of the present invention is: network equipment carries out compression coding to the MTC mark of forbidding accessing, and the MTC mark after compression coding is sent to MTC device by broadcast; MTC device decompresses to the information in broadcast, and is identified by the MTC after decompressing, and the MTC preserved with self identifies and mates, and determines self whether to allow to initiate access request according to matching result.
Be designated Group ID or APN for MTC, the network equipment of the present embodiment is made up of the mobile management network element of network side and RAN node, and wherein, the mobile management network element in LTE system is MME, and RAN node is eNodeB; Mobile management network element in UTMS is SGSN, and RAN node is RNC.
Conventional coding compression algorithm can be Hash (Hash) algorithm, utilizing hash algorithm to forbid that Group ID or APN accessed compresses to needing, can reduce the amount of information needing broadcast.But the coding compression algorithm described in the embodiment of the present invention is not limited only to hash algorithm, every algorithm that can realize data compression should be applicable to embodiments of the invention.
Based on above-mentioned coding compression algorithm, a kind of access control flow process of feasible MTC device is: carry out eap-message digest (MD5 by needing Group ID or APN of broadcast at network side, Message Digest5) coding, what send in broadcast is the MD5 coding needing to forbid Group ID or APN accessed.After MTC device receives coding, local reduction Group ID or APN, then judge whether to initiate access request according to GroupID or APN self preserved.A kind of feasible operating process as shown in Figure 7, mainly comprises the following steps:
Step 701, MME/SGSN, according to the loading condition of current network, determines Group ID or APN needing to forbid accessing, and forbids that Group ID or APN accessed carries out MD5 coding to needing.
Step 702, MME/SGSN sends OVERLOAD START message to RAN node, carries Group ID or APN after MD5 coding in message.
Step 703, MME/SGSN broadcasts Group ID or APN after MD5 coding.
Step 704, MTC device carries out MD5 decoding, and local reduction needs Group ID or APN forbidding accessing, and contrasts Group ID or APN self preserved, and judges whether to initiate access request.
Another kind of feasible operating process as shown in Figure 8, mainly comprises the following steps:
Step 801, MME/SGSN, according to the loading condition of current network, determines Group ID or APN needing to forbid accessing.
Step 802, MME/SGSN sends OVERLOAD START message to RAN node, carries Group ID or APN forbidding accessing in message.
Step 803 ~ 804, to needing, RAN node forbids that Group ID or APN accessed carries out MD5 coding, and broadcast Group ID or APN after MD5 coding.
Step 805, MTC device carries out MD5 decoding, and local reduction needs Group ID or APN forbidding accessing, and contrasts Group ID or APN self preserved, and judges whether to initiate access request.
Embodiment illustrated in fig. 8ly be with the difference of Fig. 7, its MD5 encoding operation performs in RAN node (RAN node obtains Group ID or APN needing to forbid accessing from MME/SGSN), and other operations are substantially similar.
In addition, network equipment in the present embodiment also can only include RAN node, the access control flow process of so corresponding a kind of feasible MTC device is: what RAN node was directly preserved self forbids that Group ID or APN accessed carries out MD5 coding, and Group ID or APN after being encoded by MD5 is carried in broadcast and sends to MTC device; MTC device carries out MD5 decoding, and local reduction needs Group ID or APN forbidding accessing, and contrasts Group ID or APN self preserved, and judges whether to initiate access request.Concrete operations flow process as shown in Figure 9, mainly comprises the following steps:
Step 901, what RAN node was preserved self forbids that Group ID or APN accessed carries out MD5 coding.
Wherein, Group ID or APN forbidding accessing of RAN node self preservation, normally obtains in mobile management flow process or session management flow process.
Step 902, Group ID or APN after MD5 coding is carried in broadcast and sends to MTC device by RAN node.
Step 903, after MTC device receives broadcast, carries out MD5 decoding, local reduction needs Group ID or APN forbidding accessing, and contrast Group ID or APN self preserved, if Group ID or APN self preserved can be matched, then do not initiate access request; Otherwise, can access request be initiated.
Embodiment illustrated in fig. 9ly to be with the difference of Fig. 8, to forbid that Group ID or APN accessed no longer is provided by mobile management network element, but preserved in mobile management flow process or session management flow process by RAN node.
The connection control method of another feasible MTC device of the embodiment of the present invention is: network equipment carries out modulo operation to the MTC mark of forbidding accessing, and the information after modulo operation is sent to MTC device; MTC device is according to the information after modulo operation, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.
Be designated Group ID or APN for MTC, the network equipment of the present embodiment is made up of the mobile management network element of network side and RAN node, and wherein, the mobile management network element in LTE system is MME, and RAN node is eNodeB; Mobile management network element in UTMS is SGSN, and RAN node is RNC.
Based on the method for above-mentioned modulo operation, a kind of feasible operating process as shown in Figure 10, mainly comprises the following steps:
Step 1001, MME/SGSN is according to the loading condition of current network, determine Group ID or APN needing to forbid accessing, and modulo operation is carried out to each Group ID or APN determined, information after each modulo operation is mapped to a bit respectively, and described multiple bit forms a character string.
Step 1002, MME/SGSN sends OVERLOAD START message to RAN node, carries this character string (comprising the information after modulo operation) in message.
Step 1003, RAN node broadcasts this character string (comprising the information after modulo operation).
Step 1004, MTC device is according to the character string received, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.
Concrete: the MTC mark that MTC device can be preserved self also carries out the modulo operation same with MME/SGSN, then the information after the modulo operation of MTC device is mated with described character string, if there is the information after the modulo operation identical with MTC device in character string, then do not initiate access request; Otherwise, can access request be initiated;
Or, MTC device carries out the inverse operation of modulo operation according to the character string received, then the MTC that the information obtained and MTC device self are preserved is identified and mate, if there is the MTC mark of described MTC device preservation in the information after inverse operation, then do not initiate access request; Otherwise, can access request be initiated.
Another kind of feasible operating process as shown in figure 11, mainly comprises the following steps:
Step 1101, MME/SGSN, according to the loading condition of current network, determines Group ID or APN needing to forbid accessing.
Step 1102, MME/SGSN sends OVERLOAD START message to RAN node, carries Group ID or APN forbidding accessing in message.
Step 1103 ~ 1104, to needing, RAN node forbids that Group ID or APN accessed carries out modulo operation, the information after each modulo operation is mapped to a bit respectively, and described multiple bit forms a character string; RAN node broadcasts this character string (comprising the information after modulo operation).
Step 1105, MTC device is according to the character string received, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.Concrete operations are identical with abovementioned steps 1004, repeat no more herein.
Embodiment illustrated in fig. 11ly be with the difference of Figure 10, operating in RAN node of its modulo operation performs (RAN node obtains Group ID or APN needing to forbid accessing from MME/SGSN), and other operations are substantially similar.
In addition, network equipment in the present embodiment also can only include RAN node, the access control flow process of so corresponding a kind of feasible MTC device is: what RAN node was directly preserved self forbids that Group ID or APN accessed carries out modulo operation, and the information after modulo operation is carried in broadcast and sends to MTC device; MTC device is according to the information after modulo operation, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.Concrete operations flow process as shown in figure 12, mainly comprises the following steps:
Step 1201, what RAN node was preserved self forbids that Group ID or APN accessed carries out modulo operation, and the information after each modulo operation is mapped to a bit respectively, and described multiple bit forms a character string.
Wherein, Group ID or APN forbidding accessing of RAN node self preservation, normally obtains in mobile management flow process or session management flow process.
Step 1202, RAN node broadcasts this character string (comprising the information after modulo operation).
Step 1203, MTC device is according to the character string received, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.Concrete operations are identical with abovementioned steps 1004, repeat no more herein.
Embodiment illustrated in fig. 12ly to be with the difference of Figure 11, to forbid that Group ID or APN accessed no longer is provided by mobile management network element, but preserved in mobile management flow process or session management flow process by RAN node.
The connection control method of corresponding above-mentioned MTC device, present invention also offers a kind of access control system of MTC device, comprising: network equipment and MTC device.Network equipment, for carrying out compression process to the MTC mark of forbidding accessing, and sends to MTC device by the information after compression process.MTC device, for according to the information after this compression process, and the MTC mark of self preserving, determine self whether to allow to initiate access request.
Preferably, network equipment is further used for, and determines the same bits position information of the MTC mark forbidding accessing, and same bits position information is sent to MTC device by broadcast; Accordingly, MTC device is further used for, and the same bits position information of reception is identified with the MTC self preserved and mates, and determines self whether to allow to initiate access request according to matching result.Same bits position information can also be sent to MTC device by broadcast with the form of asterisk wildcard by network equipment.
Preferably, network equipment is further used for, and carries out compression coding to the MTC mark of forbidding accessing, and the MTC mark after compression coding is sent to MTC device by broadcast; Accordingly, MTC device is further used for, and decompresses to the information in broadcast, and is identified by the MTC after decompressing, and the MTC preserved with self identifies and mates, and determines self whether to allow to initiate access request according to matching result.
Preferably, network equipment is further used for, and carries out modulo operation, and the information after modulo operation is sent to MTC device to the MTC mark of forbidding accessing; Accordingly, MTC device is further used for, according to the information after modulo operation, and the MTC mark of self preserving, determine self whether to allow to initiate access request.
Preferably, network equipment can comprise: mobile management network element and RAN node, and wherein, mobile management network element, for carrying out compression process to the MTC mark of forbidding accessing, and sends to RAN node by the information after compression process; RAN node, for sending to MTC device by the information after compression process by broadcast;
Or mobile management network element, for sending to RAN node by the MTC forbidding accessing mark; RAN node, for carrying out compression process to the MTC mark of forbidding accessing, and sends to MTC device by the information after compression process by broadcast.
Network equipment also can only include: RAN node, carries out compression process, and the information after compression process is sent to MTC device by broadcast for the MTC forbidding the accessing mark of preserving self.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims (14)

1. a connection control method for machine type communication MTC device, is characterized in that, the method comprises:
Network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after described compression process is sent to MTC device; Wherein, described compression is treated to: get same bits position information, compression coding or modulo operation;
Described MTC device is according to the information after described compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.
2. the connection control method of MTC device according to claim 1, is characterized in that, described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression being processed sends to MTC device, is specially:
Described network equipment determines the same bits position information of the MTC mark forbidding accessing, and described same bits position information is sent to described MTC device by broadcast;
Accordingly, described MTC device is according to the information after compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request, be specially:
The same bits position information of reception identifies with the MTC self preserved by described MTC device mates, and determines self whether to allow to initiate access request according to matching result.
3. the connection control method of MTC device according to claim 2, it is characterized in that, the method comprises further: described same bits position information, with the form of asterisk wildcard, is sent to described MTC device by broadcast by described network equipment.
4. the connection control method of MTC device according to claim 1, is characterized in that, described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression being processed sends to MTC device, is specially:
Described network equipment carries out compression coding to the MTC mark of forbidding accessing, and the MTC mark after compression coding is sent to described MTC device by broadcast;
Accordingly, described MTC device is according to the information after compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request, be specially:
Described MTC device decompresses to the information in broadcast, and is identified by the MTC after decompressing, and the MTC preserved with self identifies and mates, and determines self whether to allow to initiate access request according to matching result.
5. the connection control method of MTC device according to claim 1, is characterized in that, described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression being processed sends to MTC device, is specially:
Described network equipment carries out modulo operation to the MTC mark of forbidding accessing, and the information after described modulo operation is sent to described MTC device;
Accordingly, described MTC device is according to the information after compression process, and the MTC mark of self preserving, and determines self whether to allow to initiate access request, be specially:
Described MTC device is according to the information after described modulo operation, and the MTC mark of self preserving, and determines self whether to allow to initiate access request.
6. the connection control method of MTC device according to any one of claim 1 to 5, it is characterized in that, described network equipment comprises: mobile management network element and wireless access network RAN node;
Accordingly, described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device, is specially:
Described mobile management network element carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to RAN node, and the information after compression process is sent to MTC device by broadcast by described RAN node;
Or the MTC mark of forbidding accessing is sent to described RAN node by described mobile management network element, described RAN node carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device by broadcast.
7. the connection control method of MTC device according to any one of claim 1 to 5, it is characterized in that, described network equipment comprises: RAN node;
Accordingly, described network equipment carries out compression process to the MTC mark of forbidding accessing, and the information after compression process is sent to MTC device, is specially:
What described RAN node was preserved self forbids that the MTC mark accessed carries out compression process, and the information after compression process is sent to MTC device by broadcast.
8. an access control system for machine type communication MTC device, is characterized in that, this system comprises: network equipment and MTC device, wherein,
Described network equipment, for carrying out compression process to the MTC mark of forbidding accessing, and sends to MTC device by the information after described compression process; Wherein, described compression is treated to: get same bits position information, compression coding or modulo operation;
Described MTC device, for compressing the information after processing according to described, and the MTC mark of self preserving, determine self whether to allow to initiate access request.
9. the access control system of MTC device according to claim 8, it is characterized in that, described network equipment is further used for, and determines the same bits position information of the MTC mark forbidding accessing, and described same bits position information is sent to described MTC device by broadcast;
Accordingly, described MTC device is further used for, and the same bits position information of reception is identified with the MTC self preserved and mates, and determines self whether to allow to initiate access request according to matching result.
10. the access control system of MTC device according to claim 9, it is characterized in that, described network equipment is further used for, and with the form of asterisk wildcard, described same bits position information is sent to described MTC device by broadcast.
The access control system of 11. MTC device according to claim 8, it is characterized in that, described network equipment is further used for, and carries out compression coding to the MTC mark of forbidding accessing, and the MTC mark after compression coding is sent to described MTC device by broadcast;
Accordingly, described MTC device is further used for, and decompresses to the information in broadcast, and is identified by the MTC after decompressing, and the MTC preserved with self identifies and mates, and determines self whether to allow to initiate access request according to matching result.
The access control system of 12. MTC device according to claim 8, it is characterized in that, described network equipment is further used for, and carries out modulo operation, and the information after described modulo operation is sent to described MTC device to the MTC mark of forbidding accessing;
Accordingly, described MTC device is further used for, according to the information after described modulo operation, and the MTC mark of self preserving, determine self whether to allow to initiate access request.
The access control system of MTC device described in 13. any one of according to Claim 8 to 12, it is characterized in that, described network equipment comprises: mobile management network element and RAN node; Wherein,
Described mobile management network element, for carrying out compression process to the MTC mark of forbidding accessing, and sends to RAN node by the information after compression process; Described RAN node, for sending to MTC device by the information after compression process by broadcast;
Or described mobile management network element, for sending to described RAN node by the MTC forbidding accessing mark; Described RAN node, for carrying out compression process to the MTC mark of forbidding accessing, and sends to MTC device by the information after compression process by broadcast.
The access control system of MTC device described in 14. any one of according to Claim 8 to 12, it is characterized in that, described network equipment comprises: RAN node, the MTC forbidding accessing mark for preserving self carries out compression process, and the information after compression process is sent to MTC device by broadcast.
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