CN103228025A - Access method, device and system for machine type communication terminal - Google Patents
Access method, device and system for machine type communication terminal Download PDFInfo
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Abstract
The invention discloses an access method, an access device and an access system for a machine type communication terminal. The access method comprises the following steps: a MTC (machine type communication) terminal is used for receiving a notice from a mobile management network element of the communication network, wherein the notice indicates that high priority activation is performed on the MTC terminal by a MTC server; the MTC terminal determines current RAN (radio access network) congestion; and the MTC terminal sends a request message about access to the network with the high priority indication to the network side. According to the invention, the MTC terminal can set up user plane load in the mobile communication network under the situation of RAN congestion, so as to establish data communication with the MTC server.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of cut-in method, Apparatus and system of machine class communication terminal.
Background technology
Machine is the application and the service of core, networking with the machine terminal intelligent interaction to machine (M2M) business.It adopts the intelligence machine terminal, by wireless network transmissions information, is the informatization resolve scheme that the client provides, and is used to satisfy the information system requirement of client to aspects such as monitoring, command scheduling, data acquisition and measurements.
Because machine class communication (MTC) equipment (being also referred to as the MTC terminal) has unattended feature, therefore, need be optimized the 3GPP network, make network have can activated terminals ability, need MTC terminal to report data or it is controlled as MTC Server like this, just can trigger MTC equipment at any time and MTC Server sets up data communication.
According to the M2M business demand, need network realize to terminal activate, all kinds of demands of small data quantity transmission, therefore packet switching (PS) packet network architecture is strengthened, the MTC of PS network strengthens framework as shown in Figure 1, MTC (external interface function, IWF) network element and relevant interface in the PS network architecture, have been introduced.Wherein, MTC Server is used to the user that M2M is provided application controls, and MTC Server mainly is responsible for information gathering and the storage/work such as processing to MTC equipment, and can carry out necessary management to MTC equipment (MTC UE).MTC IWF network element is responsible for carrying out that network topology is hidden and application layer, bearing bed protocol conversion.The function of existing MTC IWF mainly is the activation message that receives MTC Server, and will activate message by 3GPP network related network elements and be handed down to the MTC terminal.
During existing MTC network technique for enhancing realizes, the main flow process of considering that employing MTC IWF activates, activation process mainly may further comprise the steps as shown in Figure 2:
Step 101, MTC UE is in the 3GPP packet domain, comprise packet wireless business (GPRS) network and evolved packet system (EPS) network, need be to Radio Access Network (Radio Network System, RNS) (for example, eNodeB or radio network controller (RNC)) initiate to adhere to request, wherein, carried the sign (being IMSI) of MTC UE, the priority indication of terminal, the network accessibility of MTC UE, the indication of asking distributing IP and terminal and inserted information such as agent capability.In this step, if terminal position change when online, initiation be the TAU flow process;
The priority indication of terminal is the attribute that terminal configures above, comprising: low priority indication, normal priority indication and high priority indication etc., when terminal inserts, need carry the priority indication of configuration.
RNS selects a mobile management network element (MME or SGSN) of service for it for MTC UE, and will adhere to and ask to be forwarded to this MME/SGSN, will adhere to the relevant information of carrying in the message simultaneously and also carry to MME/SGSN.
MME/SGSN sends position updating request to the home subscriber server (HLR/HSS) of MTC UE home network, wherein carries the address information of MME/SGSN and the sign (IMSI) of MTC UE, informs the current zone of inserting of MTC UE to HSS; HLR/HSS finds out contracted user's data according to the sign (IMSI) of MTC UE, sends to MME/SGSN;
If terminal allows to insert, SGSN/MME just sends to this terminal and adheres to access, and this terminal is linked into the 3GPP network;
Step 102, MTC Server need activate the MTC terminal according to application demand.MTC Server will issue ownership MTC IWF by the MTCsp interface to the activation request of MTC terminal, activate in the request message and carry information such as activation (trigger) information, terminal iidentification;
Step 103, MTC IWF is according to the terminal iidentification in the trigger request message, obtains the IP address of the SGSN/MME that terminal adheres to and the IMSI sign of terminal from HSS/HLR.
Step 104, MTC IWF carries information such as trigger information and IMSI sign to the request that described SGSN/MME sends activated terminals.
Step 105, MME/SGSN preserves this earlier in this locality and activates request according to carrier policy, initiates the TAU flow process etc. terminal.
Step 106, the TAU request that terminal is initiated periodically TAU request or initiated because of position change to MME/SGSN;
Step 107 after SGSN/MME receives TAU request, is carried out the processing of relevant position updating process such as bearing modification;
Step 108, MME/SGSN carries the activation request of this terminal in the NAS signaling of TAU response, will activate message and send to the MTC terminal.
Step 109, MTC UE finishes message with TAU and issues SGSN/MME, carries the request of activation in the message and receives information.
Step 110, MME/SGSN returns the request of activation to MTC IWF and sends success message;
Step 111, MTC IWF activates message by MTC Server and sends successfully.
Step 112, MTC terminal are set up user plane bearer at the 3GPP network after receiving the activation request of MTC Server, set up application layer with MTC Server by the user name carrying of 3GPP network then and are connected, and realize the mutual of business datum.
Strengthen in framework and the concrete flow process at existing MTC, when SGSN/MME is congested, this moment, common activation message was when MTC Server issues SGSN/MME, can be carried out refusal, SGSN/MME can notify MTC Server network congested simultaneously, and MTC Server no longer sends the informational message of common trigger when network congestion.
Referring to Fig. 3, when MTC Server need issue the high-priority applications data, just adopt this moment high priority to activate signaling message (Urgent trigger message) and issue MTC IWF, be transmitted to SGSN/MME by MTC IWF.SGSN/MME need handle the trigger request of high priority at this moment, and step is as follows:
Step 204, SGSN/MME receives Urgent trigger request, just initiates Paging, call terminal to terminal.
Step 205 after terminal is received Paging, is initiated service request to network, and the NAS signaling bear of service request is in RRC connection request signaling, and RAN issues SGSN/MME with Service request service request after setting up the RRC connection.
Trigger info information after SGSN/MME receives service request, because of network congestion is refused, is carried in step 206～208 in refuse information.Terminal is just initiated service request again according to trigger info information, carries the MT indication in service request.
Step 209～211, SGSN/MME can not refuse for the service request of MT, therefore asks Radio Resource, sets up radio bearer, and terminal can be set up data communication with MTC Server like this.
Above-mentioned Urgent trigger can handle when SGSN/MME is congested, but when RAN is congested, just can't handle, because when RAN is congested, RAN is issued in terminal bearer service request on the RRC connection request, RAN will refuse the RRC connection request because congested, makes service request can't issue SGSN/MME, thereby cause Urgent trigger failure, specifically can be referring to the marginal data of step 305～306 of Fig. 4.
In the correlation technique, when MTC Server initiated Urgent trigger notice to terminal, under the congested scene of RAN, the MTC terminal can't be set up user plane bearer at network, thereby can't carry out data communication with MTC Server, cause high-priority applications can't obtain handling.
Summary of the invention
At under the congested situation of RAN, the problem that the MTC terminal can't insert the invention provides a kind of cut-in method, Apparatus and system of MTC terminal, to address the above problem at least.
According to an aspect of the present invention, a kind of cut-in method of machine class communication MTC terminal is provided, comprise: the MTC terminal receives the notice from the mobile management network element of communication network, and wherein, described notice indication MTC server is carried out high priority to described MTC terminal and activated; Described MTC terminal determines that the current wireless access network is congested; Described MTC terminal sends the request message that carries the high priority indication to network side, and request is linked into network.
Preferably, the notice of the mobile management network element of described MTC terminal received communication network, comprise: after the mobile management network element of described communication network receives the high priority activation request of described MTC server to described MTC terminal, know that current described Radio Access Network is congested, to the beep-page message of described MTC terminal transmission high priority, described MTC terminal receives the beep-page message of described high priority; Described MTC terminal determines that the current wireless access network is congested, comprising: described MTC determines that according to the beep-page message of the described high priority that receives current described Radio Access Network network is congested.
Preferably, described MTC terminal determines that the current wireless access network is congested, comprising: described MTC terminal sends the request message that low priority is indicated or normal priority is indicated that carries configuration to network side, and request is linked into network; Described MTC terminal receives the refuse information that network side returns, and wherein, carries the congested cause value of indication Radio Access Network in the described refuse information; Described MTC terminal determines that according to the described cause value that carries in the described refuse information described Radio Access Network is congested.
Preferably, described MTC terminal determines that the current wireless access network is congested, comprising: described MTC terminal judges is current to have the expansion waiting timer to move, and determines that described Radio Access Network is congested.
Preferably, described MTC terminal initial is configured to low priority or normal priority.
Preferably, described MTC terminal sends the request message that carries the high priority indication to network side, and request is linked into network, comprising: described MTC terminal is set up in radio resource control RRC and is carried described high priority indication in request and the service request; Described MTC terminal is carried on described service request in the described RRC foundation request and sends to described Radio Access Network, the request access network.
Preferably, described MTC terminal is after network side sends described RRC foundation request and described service request, described method also comprises: described Radio Access Network receives described RRC and sets up request, set up the high priority indication of carrying in the request according to described RRC, for described MTC terminal is set up radio bearer, and described service request sent to mobile management network element in the communication network.
Preferably, described service request is sent to after the mobile management network element in the communication network, described this method also comprises: described mobile management network element carries out authentication to the described high priority indication of carrying in the described service request, be under the condition that is activated by high priority in definite described MTC terminal, the described MTC terminal of permission low priority or normal priority is carried described high priority indication and is linked into network.
Preferably, described MTC terminal sends the request message that carries the high priority indication to network side, comprise: described MTC terminal is not carried in described request message and is the low priority indication of described MTC terminal configuration or normal priority indication, and carries described high priority indication; Described MTC terminal sends described request message to described network side, the request access network.
According to another aspect of the present invention, a kind of access device of machine class communication MTC terminal is provided, be positioned at the MTC terminal, described device comprises: receiver module, be used to receive notice from the mobile management network element of communication network, wherein, described notice indication MTC server is carried out the high priority activation to described MTC terminal; Determination module is used for determining that the current wireless access network is congested; Request module is used for sending the request message that carries the high priority indication to network side, and request is linked into network.
Preferably, described notice is the beep-page message of high priority, and described determination module determines that according to the beep-page message of described high priority current described Radio Access Network is congested.
Preferably, described determination module comprises: transmitting element, be used for sending the request message that low priority is indicated or normal priority is indicated that carries configuration to network side, and request is linked into network; Receiving element is used to receive the refuse information that network side returns, and wherein, carries the congested cause value of indication Radio Access Network in the described refuse information; Determining unit is used for the described cause value that carries according to described refuse information, determines that described Radio Access Network is congested.
Preferably, described device also comprises: the expansion waiting timer is used for the expansion stand-by period that described Radio Access Network sends when generation is congested is carried out timing; Described determination module is used for determining that judging under the situation that current described expansion waiting timer is moving described Radio Access Network is congested.
Preferably, the described request module comprises: processing unit is used for carrying described high priority indication in radio resource control RRC foundation request and service request; Transmitting element is used for that described service request is carried on the described RRC request of setting up and sends to described Radio Access Network, the request access network.
According to a further aspect of the invention, provide a kind of machine class communication MTC the connecting system of terminal, having comprised: mobile management network element is used for notifying described MTC terminal receiving the high priority of MTC server to the MTC terminal when activating request message; Described MTC terminal comprises above-mentioned device, is used to receive the notice of described mobile management network element, is determining to send the request message that carries the high priority indication to network side under the congested situation of current wireless access network, and request is linked into network.
By the present invention, the MTC terminal is after receiving the notice of MTC server to this MTC terminal execution high priority activation, if determine that the current wireless access network is congested, then send the request message that carries the high priority indication to network side, request is linked into network, thereby make Radio Access Network can accept the access request of MTC terminal, and then make the MTC terminal can in mobile communications network, set up user plane bearer, thereby set up data communication with the MTC server, guaranteed that high-priority applications can access preferential processing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the MTC configuration diagram that the GPRS/EPS packet network system strengthens in the correlation technique;
Fig. 2 carries out common activation for MTC Server in the correlation technique to the MTC terminal by MTC IWF flow process;
Fig. 3 carries out flow process that high priority activate by MTC IWF to the MTC terminal for MTC Server in the correlation technique;
Fig. 4 activates the problem of existence to the MTC terminal by MTC IWF for MTC Server in the correlation technique;
Fig. 5 is the flow chart according to the cut-in method of the MTC terminal of the embodiment of the invention;
Fig. 6 is the signaling process figure according to the cut-in method of the MTC terminal of the embodiment of the invention one;
Fig. 7 is the signaling process figure according to the cut-in method of the MTC terminal of the embodiment of the invention two;
Fig. 8 is the signaling process figure according to the cut-in method of the MTC terminal of the embodiment of the invention three;
Fig. 9 is the structural representation according to the connecting system of the MTC terminal of the embodiment of the invention;
Figure 10 is the structural representation according to the access device of the MTC terminal of the embodiment of the invention;
Figure 11 is the structural representation of the access device of MTC terminal according to the preferred embodiment of the invention;
Figure 12 is the structural representation of access device of the MTC terminal of another preferred embodiment according to the present invention;
Figure 13 is the structural representation of access device of the MTC terminal of the another preferred embodiment according to the present invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
In prior art, when RAN is congested, when carrying out high priority to the MTC terminal of low priority terminal or normal priority, MTC Server activates, because what carry in the request message that described MTC terminal sends is that low priority indication or normal priority are indicated, thereby make described MTC terminal to carry out RRC (Radio Resource Control in the RAN side, Radio Resource control) connect set up can't problem, the embodiment of the invention provides a kind of cut-in method, Apparatus and system of MTC terminal.In embodiments of the present invention, after 3GPP network control veil unit receives the high priority of MTC terminal is activated request, notify described MTC terminal, if the Radio Access Network network is congested, then described MTC terminal is carried the high priority indication request and is linked into network in request message.
Fig. 5 is the flow chart according to the cut-in method of the MTC terminal of the embodiment of the invention, and as shown in Figure 5, this method comprises that mainly step S502 is to step S506.
Step S502, the MTC terminal receives the notice from the mobile management network element of communication network, and wherein, this notice indication MTC server is carried out high priority to the MTC terminal and is activated.
In a preferred implementation of the embodiment of the invention, the priority of described MTC terminal initial configuration is designated as: low priority or normal priority, promptly this MTC terminal initial is configured to the MTC terminal of low priority or the MTC terminal of normal priority.
Wherein, mobile management network element can for the Serving GPRS Support Node in the GPRS network (Serving GPRS Support Node, SGSN), also can for the mobile management entity in the EPS network (Mobility Management Entity, MME).
Step S504, the MTC terminal determines that the current wireless access network is congested.
In a preferred implementation of the embodiment of the invention, mobile management network element in the communication network is after receiving the high priority activation request of MTC server to the MTC terminal, if know that current wireless access network (RAN) is congested, then adopt high priority trigger to issue the MTC terminal, promptly send the beep-page message of high priority to the MTC terminal, the MTC terminal judges that according to the beep-page message of this high priority RAN is congested at this moment.
Perhaps, in another preferred implementation of the embodiment of the invention, the MTC terminal is after receiving the notice of mobile management network element, can carry low priority indication or normal priority indication to network side transmission access request, if receive the refuse information of RAN, and the reason of the refusal that carries in this refuse information is that RAN is congested, and then the MTC terminal can determine that the current wireless access network is congested.
In addition, in actual applications, Radio Access Network generation signaling congestion in the time of can't the normal process signaling, will be distributed expansion stand-by period (Extend Wait Time, EWT) give the MTC terminal, MTC terminal operating EWT timer carries out timing to this expansion stand-by period, therefore, and in another preferred implementation of the embodiment of the invention, the MTC terminal of low priority or normal priority is being judged currently when the operation of expansion stand-by period timer is arranged, and determines that this moment RAN is congested.
Step S506, the MTC terminal sends the request message that carries the high priority indication to network side, and request is linked into network.
Wherein, above-mentioned request message comprises: (1) inserts request, and promptly RRC sets up request; (2) service request.Wherein, service request can be carried in the RRC foundation request and be sent to Radio Access Network.
In a preferred implementation of the embodiment of the invention, described MTC terminal is not carried the low priority indication or the normal priority indication of self configuration in inserting request when definite RAN is congested, changes into carrying the high priority indication and being linked into network.
Radio Access Network receives the RRC request of setting up of described MTC terminal, sets up the high priority indication of carrying in the request according to described RRC, for described MTC terminal is set up radio bearer, and described service request is sent to mobile management network element in the communication network.
In a preferred implementation of the embodiment of the invention, after SGSN/MME receives the terminal traffic request, can carry out the priority authentication to the high priority indication of carrying in the service request, when SGSN/MME determines under urgent trigger condition, allow low priority terminal or normal priority terminal to carry the high priority indication.Thereby not needing can avoid the application personation high priority indication of priority treatment, the request priority treatment.
Preferably, the high priority indication that SGSN/MME carries in to service request carry out the priority authentication and situation about passing through under, SGSN/MME can send radio bearer to RNS and set up request, Radio Access Network RAN is a MTC terminal distribution wireless user face resource, and sets up wireless user's face carrying for the MTC terminal.
The said method that provides by the embodiment of the invention, even RAN has occurred congested,, still can be triggered and (for example at mobile communications network if after the MTC terminal has been received Urgent trigger request, the 3GPP network) sets up user plane bearer, thereby set up data communication with MTC Server.Thereby make the application of high priority can enjoy high-grade service, strengthened user experience, improved client's satisfaction.
Below by specific embodiment the said method that the embodiment of the invention provides is described.
Embodiment one
In the present embodiment, when Radio Access Network RAN was congested, it is congested that SGSN/MME knows that RAN has taken place, and after the Urgent trigger request of receiving the MTC terminal, adopts the high priority paging that the MTC terminal is carried out paging.After the MTC terminal is received the beep-page message of high priority, adopt the alternative low priority that self disposes of high priority indication or the attribute of normal priority, and in RRC foundation request and service request, carry the high priority indication.Radio Access Network is received the high priority indication in the RRC request, be this terminal distribution Radio Resource just, sets up radio bearer, and business request information is issued SGSN/MME.SGSN/MME request RAN is this terminal distribution wireless user face bearing resource, sets up user plane bearer, and MTC terminal and MTC Server set up data communication by this user plane bearer.
Fig. 6 is the signaling process figure of present embodiment, as shown in Figure 6, may further comprise the steps:
Step S601, MTC UE initiates to adhere to request to the 3GPP packet network, and is attached to the 3GPP network.
Step S602, signaling congestion has taken place in Radio Access Network, and this moment can't the normal process signaling, and the wireless access request of the terminal of low priority or normal priority is refused to handle.Can distribute expansion stand-by period (Extended Wait Time) to give the MTC terminal simultaneously, the MTC terminal need be moved the EWT timer, reattempts access network after waiting timer to overflow.
Step S603, MTC Server know that SGSN/MME is congested, and common activation message is no longer initiated.Need carry out when mutual with the MTC terminal as high-priority applications, initiate high priority by MTC IWF to SGSN/MME and activate message Urgent trigger, in activating message, carry trigger info information.
Step S604, SGSN/MME are by webmaster, or by device level message, it is congested to know that RAN has taken place.When the Urgent trigger that receives the MTC terminal, adopt high priority Urgent Paging that the MTC terminal is initiated paging.
Step S605a, after the MTC terminal is received Urgent Paging, definite Radio Access Network has at this moment taken place congested, and the MTC terminal adopts the alternative low priority that self disposes of high priority indication or the attribute of normal priority, and carries the high priority indication in RRC foundation request and service request.
Step S605b, after RAN receives that the RRC that carries service request NAS signaling sets up request,, accept this RRC this moment and connect the request of foundation according to high priority indication wherein, set up RRC for MTC terminal distribution radio open resource and connect, and service request is sent to SGSN/MME.
Step S606, SGSN/MME carries out authentication to the priority in the service request, under the condition of Urgent trigger, allows low priority terminal or normal priority terminal to carry the high priority indication and is linked into network.
SGSN/MME initiates radio bearer to Radio Access Network and sets up request, carries trigger info.
Step S607, Radio Access Network RAN are MTC terminal distribution wireless user face resource, and set up the carrying of wireless user's face for the MTC terminal, in setting up request message trigger info are issued the MTC terminal.
Step S608, the MTC terminal can be set up data communication by user plane bearer and the MTC SERVER that sets up;
Step S609, Radio Access Network returns radio bearer to SGSN/MME and sets up response message, and the notice radio bearer is set up.
Embodiment two
In the present embodiment, SGSN/MME receives after the Urgent trigger of the MTC terminal request, still adopts high common paging that the MTC terminal is carried out paging.After the MTC terminal was received general page message, the low priority indication or the normal priority indication of carrying configuration by prior art in RRC request and business request information inserted, but RAN can refuse after receiving the RRC request.RAN notifies MTC terminal RAN congested cause value in refuse information, after the MTC terminal knows that RAN is congested, adopt the alternative low priority that self disposes of high priority indication or the attribute of normal priority, and in RRC foundation request and service request, carry the high priority indication.Radio Access Network is received the high priority indication in the RRC request, be this terminal distribution Radio Resource just, sets up radio bearer, and business request information is issued SGSN/MME.SGSN/MME request RAN is this terminal distribution wireless user face bearing resource, sets up user plane bearer, and MTC terminal and MTC Server set up data communication by this user plane bearer.
Fig. 7 is the signaling process figure of present embodiment, as shown in Figure 7, may further comprise the steps:
Step S701, MTC UE initiates to adhere to request to the 3GPP packet network, and is attached to the 3GPP network.
Step S702, signaling congestion has taken place in Radio Access Network, and this moment can't the normal process signaling, and the wireless access request of the terminal of low priority or normal priority is refused to handle.Can distribute expansion stand-by period (Extended Wait Time) to give the MTC terminal simultaneously, the MTC terminal need be moved the EWT timer, reattempts access network after waiting timer to overflow.
Step S703, MTC Server know that SGSN/MME is congested, and common activation message is no longer initiated.Need carry out when mutual with the MTC terminal as high-priority applications, initiate high priority by MTC IWF to SGSN/MME and activate message Urgent trigger, in activating message, carry trigger info information.
When step S704, SGSN/MME receive the Urgent trigger of MTC terminal, adopt common Paging that the MTC terminal is initiated paging.
Step S705 after the MTC terminal is received the paging request, initiates service request to SGSN/MME, and service request is carried in the RRC connection request message that RAN initiates.The priority indication of carried terminal configuration in RRC request and service request or normal priority indication.
After step S706, RAN received that RRC sets up request message, because RAN is congested, RAN can refuse this request, and carried the congested cause value of RAN and give the MTC terminal.
Step S707a, after the MTC terminal is received refuse information, know that this moment, Radio Access Network took place congestedly, the MTC terminal adopts the high priority indication to substitute the low priority of self configuration or the attribute of normal priority, and sets up at RRC and to carry the high priority indication in request and the service request.
Step S707b, after RAN receives that the RRC that carries service request NAS signaling sets up request,, accept this RRC this moment and connect the request of foundation according to high priority indication wherein, set up RRC for MTC terminal distribution radio open resource and connect, and service request is sent to SGSN/MME.
Step S708, SGSN/MME carries out authentication to the priority in the service request, under the condition of Urgent trigger, allows low priority terminal or normal priority terminal to carry the high priority indication and is linked into network.
SGSN/MME initiates radio bearer to Radio Access Network and sets up request, carries trigger info.
Step S709, Radio Access Network RAN are MTC terminal distribution wireless user face resource, and set up the carrying of wireless user's face for the MTC terminal, in setting up request message trigger info are issued the MTC terminal.
Step S710, the MTC terminal can be set up data communication by user plane bearer and the MTC SERVER that sets up.
Step S711, Radio Access Network returns radio bearer to SGSN/MME and sets up response message, and the notice radio bearer is set up.
Embodiment three
In the present embodiment, SGSN/MME receives after the Urgent trigger of the MTC terminal request, still adopts high common paging that the MTC terminal is carried out paging.After the MTC terminal was received general page message, if the MTC terminal is also allowing expansion stand-by period timer, the MTC terminal can judge that RAN is in congestion state at this moment.After the MTC terminal knows that RAN is congested, just adopt the alternative low priority that self disposes of high priority indication or the attribute of normal priority, and in RRC foundation request and service request, carry the high priority indication.Radio Access Network is received the high priority indication in the RRC request, be this terminal distribution Radio Resource just, sets up radio bearer, and business request information is issued SGSN/MME.SGSN/MME request RAN is this terminal distribution wireless user face bearing resource, sets up user plane bearer, and MTC terminal and MTC Server set up data communication by this user plane bearer.
Fig. 8 is the signaling process figure of present embodiment, as shown in Figure 8, mainly may further comprise the steps:
Step S801, MTC UE initiates to adhere to request to the 3GPP packet network, and is attached to the 3GPP network.
Step S802, signaling congestion has taken place in Radio Access Network, and this moment can't the normal process signaling, and the wireless access request of the terminal of low priority or normal priority is refused to handle.Can distribute expansion stand-by period (Extended Wait Time) to give the MTC terminal simultaneously, the MTC terminal need be moved the EWT timer, reattempts access network after waiting timer to overflow.
Step S803, MTC Server know that SGSN/MME is congested, and common activation message is no longer initiated.Need carry out when mutual with the MTC terminal as high-priority applications, initiate high priority by MTC IWF to SGSN/MME and activate message Urgent trigger, in activating message, carry trigger info information.
When step S804, SGSN/MME receive the Urgent trigger of MTC terminal, still adopt common Paging that the MTC terminal is initiated paging.
Step S805, after the MTC terminal was received the paging request, if the expansion stand-by period timer in the MTC terminal moves, this moment, MTC terminal judges Radio Access Network was in congestion state.
Step S806a, the MTC terminal adopts the alternative low priority that self disposes of high priority indication or the attribute of normal priority, and carries the high priority indication in RRC foundation request and service request.
Step S806b, after RAN receives that the RRC that carries service request NAS signaling sets up request,, accept this RRC this moment and connect the request of foundation according to high priority indication wherein, set up RRC for MTC terminal distribution radio open resource and connect, and service request is sent to SGSN/MME.
Step S807, SGSN/MME carries out authentication to the priority in the service request, under the condition of Urgent trigger, allows low priority terminal or normal priority terminal to carry the high priority indication and is linked into network.
SGSN/MME initiates radio bearer to Radio Access Network and sets up request, carries trigger info.
Step S808, Radio Access Network RAN are MTC terminal distribution wireless user face resource, and set up the carrying of wireless user's face for the MTC terminal, in setting up request message trigger info are issued the MTC terminal.
Step S809, the MTC terminal can be set up data communication by user plane bearer and the MTC SERVER that sets up;
According to the foregoing description, can be implemented in RAN when congested, when MTC Sever initiated the high priority activation to the MTC terminal, the MTC terminal can be to the network application to user's face resource and foundation carrying, and the MTC terminal can be carried out data communication by this user plane bearer and MTC Server.This method ensures the robustness of network and M2M operation flow, avoids influencing the M2M business realizing, improves user experience as far as possible.
According to the embodiment of the invention, a kind of connecting system of MTC terminal also is provided, this system can be used to the said method of realizing that the embodiment of the invention provides.
Fig. 9 is the connecting system according to the MTC terminal of the embodiment of the invention, and as shown in Figure 9, this system mainly comprises: mobile management network element 1 and MTC terminal 2.Wherein, mobile management network element 1 is used for receiving the MTC server when high priority of MTC terminal 2 is activated request message, notice MTC terminal 2; MTC terminal 2 is used for the notice of receiving mobility managed network element 1, is determining to send the request message that carries the high priority indication to network side under the congested situation of current wireless access network, and request is linked into network.
In the preferred implementation of the embodiment of the invention, mobile management network element 1 and MTC terminal 2 can be carried out the access of MTC terminal according to the described method of the foregoing description, and have identical effect, and the concrete embodiment of the invention repeats no more.
According to the embodiment of the invention, a kind of access device of MTC terminal also is provided, this device is arranged in the MTC terminal, can be used as in the MTC terminal 2 in the said system.
Figure 10 is the structural representation according to the access device of the MTC terminal of the embodiment of the invention, as shown in figure 10, this device can comprise: receiver module 10, be used to receive notice from the mobile management network element of communication network, wherein, this notice indication MTC server is carried out the high priority activation to the MTC terminal; Determination module 20 is used for determining that the current wireless access network is congested; Request module 30 is used for sending the request message that carries the high priority indication to network side, and request is linked into network.
The said apparatus that provides by the embodiment of the invention, the MTC terminal is receiving indication MTC server when the MTC terminal is carried out the notice that high priority activates, determine under the congested situation of current wireless access network at determination module 20, request module 30 sends the request message that carries the high priority indication to network side, request is linked into network, even thereby make that RAN has occurred under the congested situation, also can make Radio Access Network accept the access request of MTC terminal, thereby (for example at mobile communications network, the 3GPP network) sets up user plane bearer, and then set up data communication with MTC Server.Thereby make the application of high priority can enjoy high-grade service, strengthened user experience, improved client's satisfaction.
In a preferred implementation of the embodiment of the invention, corresponding the foregoing description one, above-mentioned notice can be the activation message of high priority, determination module 20 can determine that according to the activation message of this high priority the current wireless access network is congested.
In another preferred implementation of the embodiment of the invention, determination module 20 also can determine whether the current wireless access network is congested according to the foregoing description two described modes, as shown in figure 11, in this preferred implementation, determination module 20 can comprise: transmitting element 210, be used for sending the request message that low priority is indicated or normal priority is indicated that carries configuration to network side, request is linked into network; Receiving element 220 is used to receive the refuse information that network side returns, and wherein, carries the congested cause value of indication Radio Access Network in the described refuse information; Determining unit 230 is used for the described cause value that carries according to described refuse information, determines that described Radio Access Network is congested.
In another preferred implementation of the embodiment of the invention, determination module 20 also can determine whether the current wireless access network is congested according to the foregoing description three described modes, as shown in figure 12, in this preferred implementation, this device can also comprise: expansion waiting timer 40 is used for the expansion stand-by period that described Radio Access Network sends when generation is congested is carried out timing; Then determination module 20 is used for determining that judging under the situation that current described expansion waiting timer is moving described Radio Access Network is congested.
In another preferred implementation of the embodiment of the invention, request module 30 is when the request access network, can handle request message earlier, send a request message to network side then, therefore, as shown in figure 13, in this preferred implementation, request module 30 can comprise: processing unit 310 is used for carrying described high priority indication in radio resource control RRC foundation request and service request; Transmitting element 320 is used for that described service request is carried on the described RRC request of setting up and sends to described Radio Access Network, the request access network.
From above description, as can be seen, in the embodiment of the invention, can be implemented in RAN when congested, when MTC Sever initiates the high priority activation to the MTC terminal, the MTC terminal can be to the network application to user's face resource and foundation carrying, and the MTC terminal can be carried out data communication by this user plane bearer and MTC Server.This method ensures the robustness of network and M2M operation flow, avoids influencing the M2M business realizing, improves user experience as far as possible.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. the cut-in method of a machine class communication MTC terminal is characterized in that, comprising:
The MTC terminal receives the notice from the mobile management network element of communication network, and wherein, described notice indication MTC server is carried out high priority to described MTC terminal and activated;
Described MTC terminal determines that the current wireless access network is congested;
Described MTC terminal sends the request message that carries the high priority indication to network side, and request is linked into network.
2. method according to claim 1 is characterized in that,
The notice of the mobile management network element of described MTC terminal received communication network, comprise: after the mobile management network element of described communication network receives the high priority activation request of described MTC server to described MTC terminal, know that current described Radio Access Network is congested, to the beep-page message of described MTC terminal transmission high priority, described MTC terminal receives the beep-page message of described high priority;
Described MTC terminal determines that the current wireless access network is congested, comprising: described MTC determines that according to the beep-page message of the described high priority that receives current described Radio Access Network is congested.
3. method according to claim 1 is characterized in that, described MTC terminal determines that the current wireless access network is congested, comprising:
Described MTC terminal sends the request message that low priority is indicated or normal priority is indicated that carries configuration to network side, and request is linked into network;
Described MTC terminal receives the refuse information that network side returns, and wherein, carries the congested cause value of indication Radio Access Network in the described refuse information;
Described MTC terminal determines that according to the described cause value that carries in the described refuse information described Radio Access Network is congested.
4. method according to claim 1 is characterized in that, described MTC terminal determines that the current wireless access network is congested, comprising:
Described MTC terminal judges is current to have the expansion waiting timer to move, and determines that described Radio Access Network is congested.
5. according to each described method in the claim 1 to 4, it is characterized in that described MTC terminal initial is configured to low priority or normal priority.
6. method according to claim 5 is characterized in that, described MTC terminal sends the request message that carries the high priority indication to network side, and request is linked into network, comprising:
Described MTC terminal is set up in radio resource control RRC and is carried described high priority indication in request and the service request;
Described MTC terminal is carried on described service request in the described RRC foundation request and sends to described Radio Access Network, the request access network.
7. method according to claim 6 is characterized in that, described MTC terminal is after network side sends described RRC foundation request and described service request, and described method also comprises:
Described Radio Access Network receives described RRC and sets up request, sets up the high priority indication of carrying in the request according to described RRC, for described MTC terminal is set up radio bearer, and described service request is sent to mobile management network element in the communication network.
8. method according to claim 7 is characterized in that, described service request is sent to after the mobile management network element in the communication network, and described this method also comprises:
Described mobile management network element carries out authentication to the described high priority indication of carrying in the described service request, determining that described MTC terminal is under the condition of high priority activation, the described MTC terminal of permission low priority or normal priority is carried described high priority indication and is linked into network.
9. method according to claim 5 is characterized in that, described MTC terminal sends the request message that carries the high priority indication to network side, comprising:
Described MTC terminal is not carried in described request message and is the low priority indication of described MTC terminal configuration or normal priority indication, and carries described high priority indication;
Described MTC terminal sends described request message to described network side, the request access network.
10. the access device of a machine class communication MTC terminal is positioned at the MTC terminal, it is characterized in that described device comprises:
Receiver module is used to receive the notice from the mobile management network element of communication network, and wherein, described notice indication MTC server is carried out high priority to described MTC terminal and activated;
Determination module is used for determining that the current wireless access network is congested;
Request module is used for sending the request message that carries the high priority indication to network side, and request is linked into network.
11. device according to claim 10 is characterized in that, described notice is the beep-page message of high priority, and described determination module determines that according to the beep-page message of described high priority current described Radio Access Network is congested.
12. device according to claim 10 is characterized in that, described determination module comprises:
Transmitting element is used for sending the request message that low priority is indicated or normal priority is indicated that carries configuration to network side, and request is linked into network;
Receiving element is used to receive the refuse information that network side returns, and wherein, carries the congested cause value of indication Radio Access Network in the described refuse information;
Determining unit is used for the described cause value that carries according to described refuse information, determines that described Radio Access Network is congested.
13. device according to claim 10 is characterized in that,
Described device also comprises: the expansion waiting timer is used for the expansion stand-by period that described Radio Access Network sends when generation is congested is carried out timing;
Described determination module is used for determining that judging under the situation that current described expansion waiting timer is moving described Radio Access Network is congested.
14., it is characterized in that the described request module comprises according to each described device in the claim 10 to 13:
Processing unit is used for carrying described high priority indication in radio resource control RRC foundation request and service request;
Transmitting element is used for that described service request is carried on the described RRC request of setting up and sends to described Radio Access Network, the request access network.
15. the connecting system of a machine class communication MTC terminal is characterized in that, comprising:
Mobile management network element is used for notifying described MTC terminal receiving the MTC server when high priority of MTC terminal is activated request message;
Described MTC terminal, comprise each described device in the claim 10 to 14, be used to receive the notice of described mobile management network element, determining under the congested situation of current wireless access network, send the request message that carries the high priority indication to network side, request is linked into network.
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