CN102469503A - Congestion control method in MTC switching, apparatus thereof and system thereof - Google Patents

Abstract

The invention discloses a congestion control method in MTC switching. The method comprises the following steps: in a process of carrying out MTC switching, a target eNodeB or a target MME determines whether the target eNodeB or the target MME is at a network congestion state or not according to obtained MTC information of an MTC terminal and present network load state, and if so, carrying out present switching is rejected; otherwise, carrying out the present switching is continued. The invention also discloses a congestion control apparatus and a congestion control system in the MTC switching, influence of MTC switching on a present network is minimized, thus a normal service of common UE is not influenced by frequent switching when a plurality of MTC terminals moves, the network is prevented from congestion effectively, and through network optimization, network resource is effectively utilized at utmost.

Description

Jamming control method during MTC switches and device, system

Technical field

The present invention relates to the handoff technique in machine to machine (M2M, the Machine to Machine) field, relate in particular to a kind of MTC jamming control method and device, the system in switching.

Background technology

In recent years, the M2M communication service begins to be applied gradually, like logistics system, remote meter reading, Smart Home etc.M2M service provider uses existing wireless network, carries out the M2M business like PS networks such as GPRS (GPRS, General Packet Radio Service) network, evolved packet system (EPS, Evolved Packet System) networks.With person to person (H2H, Human to Human) communication service evident difference property is arranged because of M2M is professional, need carry out necessary optimization, to obtain best network management and network communication quality existing network.

Along with the development of wireless broad band technology, operation layer is increasingly high to performance requirements such as the bandwidth of transport layer, time delays.For improving its network performance; Reduce networking and operation cost; 3GPP is devoted to the research of SAE (System Architecture Evolution, System Architecture Evolution), and purpose is the Packet Based Network (EPC that makes evolution; Evolved Packet Core) can provide higher transmission rate, shorter transmission delay, optimization to divide into groups; And universal land radio access web (E-UTRAN, Evolved Universal Terrestrial Radio Access Network), UMTS Terrestrial radio access network (UTRAN, UMTSTerrestrial Radio Access Network), the WLAN (WLAN of support evolution; Wireless Local Area Network) and the mobile management between the access network of other non-third generation partner programs (3GPP, Third Generation Partnership Projects).

At present, the framework of SAE is as shown in Figure 1, and wherein, the network element that comprises in the wireless access network of evolution (E-RAN, Evolved Radio Access Network) is enode b (eNodeB, Evolved NodeB), and the access that is used to the user provides Radio Resource; Packet Data Network (PDN, Packet Data Network) provides professional network for the user; EPC provides lower delay, and allows more wireless access system to insert, and it comprises following network element:

Mobile management entity (MME, Mobility Management Entity) is the chain of command functional entity; The context of subscriber equipment (UE, User Equipment) is in charge of and is stored to the server of interim storaging user data; Such as ID, mobility management states, user security parameters etc.; For the user distributes temporary mark, when UE quarters at this tracing area or this network, be responsible for this user is carried out authentication.

Gateway (S-GW, Serving Gateway) is a user entity, is responsible for the user face data route and handles, and termination is in the downlink data of the UE of free time (ECM_IDLE) state.The SAE of management and storage UE carries (bearer) context, such as IP bearer service parameter and network internal routing iinformation etc.S-GW is the anchor point of 3GPP internal system user plane, and a user can only have a S-GW a moment.

Packet data network gateway (PGW, PDN Gateway) is to be responsible for the gateway that UE inserts PDN, and distributing user IP address also is the mobility anchor point of 3GPP and non-3GPP connecting system, and the function of PGW comprises that also strategy is implemented, charging is supported.The user can insert a plurality of PGW at synchronization.Strategy also is arranged in PGW with the enforcement functional entity (PCEF, Policy and Charging Enforcement Function) that charges.

Strategy and charging regulation function entity (PCRF, Policy and Charging Rules Function) are responsible for to PCEF policy control and charging regulation being provided.User-subscribed database (SPR, Subscription Profile Repository) is used to manage signatory strategy and PCC rule;

Home subscriber server (HSS; Home Subscriber Server); Be responsible for the permanent storage user contracting data, the content of HSS storage comprises the international mobile subscriber identity (IMSI, International Mobile Subscriber Identification) of UE, the IP address of PGW.

Physically, SGW and PGW possibly unify, and EPC system user veil unit comprises SGW and PGW.

The machine class communication server (MTC Server, Machine Type Communication Server), main information gathering and the storage/work of being responsible for MTC equipment such as processing, and can carry out necessary management to MTC equipment.

Machine class subscriber equipment (MTC UE, Machine Type Communication User Equipment), similar with UE, usually be responsible for collecting the information of some collectors and insert core net through the RAN node, and with MTC Server interaction data.The M2M business is the application and the service of core, networking with the machine terminal intelligent interaction; It adopts the intelligence machine terminal; Through wireless network transmissions information; Be the informatization resolve scheme that the client provides, be used to satisfy the information system requirement of client aspects such as monitoring, command scheduling, data acquisition and measurements.

In the prior art; ENodeB moves to the regional extent of target eNode B from the source when ordinary terminal, and source eNodeB need determine to initiate to switch, and source eNodeB can initiate switching from X2 interface and S1 interface; When target eNode B or target MME are in the network congestion state, can refuse this handoff request.

Fig. 2 describes in the prior art, and UE is attached to the EPS network, and when UE moved to target eNode B by source eNodeB, wireless side was carried out the process that X2 switches to it, specifically comprises:

S201, UE have been linked into the EPS network, and carry out data interaction through the EPS carrying of setting up with far-end;

S202, source eNodeB initiates measurement control order to UE, the position limitation information of configuration UE and measurement rule;

S203, UE is included in positional information and issues source eNodeB in the measurement report according to measuring rule or system information;

S204, source eNodeB are according to the positional information select target eNodeB that provides in the measurement report, and decision is initiated to switch;

S205; Source eNodeB initiates handoff request to target eNode B, carries radio bearer and sets up context (RRC context), Target Cell Identifier (Target Cell ID), signaling context (Signalling context), appointing wireless resource context HO parameters such as (E-RAB context) to target eNode B;

S206 is if target eNode B allows to switch, just according to the service quality among the E-RAB (QoS, Quality of Service) parameter distributing radio resource.When eNodeB is in congestion state, there is not available radio resources, target eNode B is just refused the handoff request that source eNodeB initiates;

S207, target eNode B is congested, just sends to source eNodeB and switches refuse information, the request of refusal source eNodeB;

After S208, source eNodeB received and switch refuse information, sub-district ID selected other available target eNode B according to the UE place, and attempted initiating to switch;

S209 has accepted the handoff request of source eNodeB when target eNode B, and source eNodeB need send the RRC reconfiguration message to UE, and the wireless connections of UE are switched to target eNode B.

Fig. 3 describes in the prior art, and UE is attached to the EPS network, and when UE moved to target eNode B by source eNodeB, core-network side was carried out the process that S1 switches to it, specifically comprises:

S301, UE have been linked into the EPS network, and carry out data interaction through the EPS carrying of setting up with far-end;

S302, eNodeB decision in source is initiated to switch to target eNode through the S1 interface;

S303, source eNodeB initiates handoff request to source MME, carries the ID of source eNodeB to transparent data, target following area identification (Targer TAI) and the target eNode B of target eNode B;

S304; Source MME is according to Target TAI Information Selection target MME; And change redirect request before sending and give target MME; Wherein, carry MME UE context (MME UE context), target following area identification Target TAI, source eNodeB, comprise information such as IMSI, terminal capability, S-GW address, P-GW address, APN among the MME UE context to the transparent data of target eNode B, the information such as ID of target eNode B.

S305, target MME determines according to Target TAI whether needs are selected new S-GW, if select new S-GW, target MME need rebulid EPS and carry between target S-GW and P-GW;

S306, target MME sends handoff request message and gives target eNode B, and the entry address, EPS Bear_QoS parameter, the source eNodeB that carry S-GW arrive the target eNode B transparent data, and request is switched;

S307, target eNode B is in network congestion, does not have allocation of radio resources, just refuses this handoff request;

S308, target eNode B is sent switch failure information to target MME, refuses this handoff request, and target MME is released to the Internet resources that this terminal is reserved.

S309, optional, target MME is through sending deletion conversation request message, the EPS bearing resource that deletion is set up;

S310 changes before target MME sends and is redirected refuse information to source MME, refuses this switching;

After S311, source MME received and be redirected refuse information, eNodeB returned switch failure information to the source.

The quantity size at MTC terminal possibly as long as each MTC terminal has the 3GPP communications module, all can be linked into the 3GPP network and carry out data communication at more than 10 times of portable terminal quantity.If concurrent data are inserted at the MTC terminal of large scale deployment simultaneously, all bring congested possibility certainly will for each aspects such as wireless network, signaling network, transfer of data, cause M2M equipment to insert and the transmission obstacle data, seriously possibly cause network paralysis.

Prior art has only proposed to changing method ordinary terminal such as mobile phone, that initiated by source eNodeB at present; And, also do not have corresponding method to propose at present for the MTC terminal, if carry out the switching at MTC terminal according to the method for ordinary terminal; Can be because of the MTC terminal quantity far more than ordinary terminal; And the business of existing network is brought a lot of impacts, as cause existing network congested etc., influence existing network professional normal use and user experience.Therefore; Need to be directed against and propose corresponding congestion control scheme when switch at the MTC terminal; So that the switching of difference MTC terminal and ordinary terminal, find a kind of that more optimize, can be applicable to the changing method that is directed against the MTC terminal, the switching that the MTC terminal is moved cause can not have influence on the regular traffic of ordinary terminal; So that it is congested that the prevention network takes place, farthest effectively utilize Internet resources through the network optimization.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of MTC jamming control method and device, system in switching, and moves the problem that the switching that causes can have influence on the regular traffic of ordinary terminal and cause network congestion to solve the MTC terminal.

For achieving the above object, technical scheme of the present invention is achieved in that

The invention provides the jamming control method in a kind of MTC switching; Said method comprises: in the process of carrying out the MTC switching; Target eNode B or target MME are according to the MTC information at the MTC terminal that gets access to and current network load state; Judge whether self is in the network congestion state, if refusal carries out current switching; Otherwise, proceed current switching.

In such scheme; Said target eNode B is according to the MTC information at the MTC terminal that gets access to and current network load state; Judge whether self is in the network congestion state; Be specially: the MTC information at the MTC terminal of carrying in the handoff request according to received source eNodeB initiation and current network load state, target eNode B judges whether self is in the network congestion state; If, refuse the handoff request of said source eNodeB, send switch failure information to said source eNodeB; Otherwise, accept said handoff request, continue the subsequent operation of current switching.

In such scheme; Before the said handoff request that said target eNode B reception sources eNodeB initiates; Said method also comprises: said source eNodeB from said MTC terminal or source MME obtain the MTC information at said MTC terminal, and initiate to carry the handoff request of said MTC information to said target eNode B.

In such scheme; Said target MME is according to the MTC information at the MTC terminal that gets access to and current network load state; Judge whether self is in the network congestion state; Be specially: the MTC information and the current network load condition at the MTC terminal of carrying in the preceding commentaries on classics redirect request according to received source MME transmission, target MME judges whether self is in the network congestion state; If, refuse the said preceding redirect request of changeing,, changes said source MME the redirect request refuse information before sending; Otherwise, accept the preceding commentaries on classics redirect request of said source MME, send redirect request to the target eNode B of current switching.

In such scheme; Before said target MME receives the said preceding commentaries on classics redirect request that carries MTC information; Said method also comprises: said source MME obtains the MTC information at said MTC terminal, and sends the preceding commentaries on classics redirect request that carries this MTC information to said target MME.

In such scheme, said source MME obtains said MTC information, is specially: when being attached to the network at source MME place at said MTC terminal, carry the MTC information of self to said source MME through attach request at said MTC terminal; Perhaps, when being attached to the network at said source MME place at said MTC terminal, set up in the process of carrying, said source MME obtains the MTC information at said MTC terminal from service quality (QoS) parameter at said MTC terminal.

In such scheme, said target MME sends redirect request to the target eNode B of current switching, is specially: said target MME sends the redirect request of the MTC information that carries the MTC terminal to the target eNode B of current switching; Afterwards; Said method also comprises: said target eNode B receives this redirect request; And, judge self current network congestion state that whether is in according to the MTC information at the MTC terminal of carrying in this redirect request and current network load state, if; Refuse said redirect request, send the redirect request refuse information to said target MME; Otherwise, continue the subsequent operation of current switching.

In such scheme; In said target eNode B after said target MME sends the redirect request refuse information; Said method also comprises: said target MME receives after the said redirect request refuse information; Before the source of current switching MME returns, change the redirect request refuse information, refuse the current preceding commentaries on classics redirect request of said source MME; Afterwards, said source MME reselects target MME, and sends the preceding commentaries on classics redirect request that carries said MTC information to selected target MME; Perhaps, said source MME returns switch failure information to the source of current switching eNodeB, the current handoff failure of notification source eNodeB.

In such scheme, said switch failure information and the said preceding redirect request refuse information of changeing comprise cause value and/or stand-by period, and this cause value is specially said target eNode B or the current indication that is in the network congestion state of target MME; The said stand-by period is used to indicate source eNodeB or source MME to select said target eNode B or target MME to want elapsed time once more from current being denied to.

In such scheme, said MTC information specifically comprises the one or more arbitrarily of following three kinds of information: MTC indication (MTC Indication), low priority indication (Low Priority), MTC ARP.

The present invention also provides a kind of MTC the congestion control device in switching, and said device comprises: acquiring unit, judging unit, refusal unit and accept the unit, and wherein, acquiring unit is used for carrying out the process that MTC switches, and gets access to the MTC information at MTC terminal; Judging unit, the MTC information and the current network load condition at the MTC terminal that is used for getting access to according to said acquiring unit judge whether target eNode B or target MME are in the network congestion state; If; Then start the refusal unit, otherwise, start and accept the unit; The refusal unit is used for refusal and carries out current switching; Accept the unit, be used to proceed current switching.

The present invention also provides the congestion control system in a kind of MTC switching; Said system comprises: source eNodeB and target eNode B; Wherein, Source eNodeB is used for from the MTC terminal or source MME obtains the MTC information at said MTC terminal, and initiates to carry the handoff request of said MTC information to said target eNode B; Target eNode B comprises: the unit is accepted in first acquiring unit, first judging unit, the first refusal unit and first, and wherein, first acquiring unit is used for receiving the MTC information at the MTC terminal that handoff request that said source eNodeB initiates carries; First judging unit; The MTC information and the current network load condition at the MTC terminal that is used for carrying according to the handoff request that said first acquiring unit receives; Judge whether target eNode B self is in the network congestion state, if then start the said first refusal unit; Otherwise, start said first and accept the unit; The first refusal unit is used to refuse the handoff request of said source eNodeB, sends switch failure information to said source eNodeB; First accepts the unit, is used to accept the handoff request of said source eNodeB, continues the subsequent operation of current switching.

The present invention also provides the congestion control system in a kind of MTC switching, and said system comprises: source MME and target MME, and wherein, source MME is used to obtain the MTC information at MTC terminal, and sends the preceding commentaries on classics redirect request that carries this MTC information to said target MME; Target MME comprises: the unit is accepted in second acquisition unit, second judging unit, the second refusal unit and second, and wherein, second acquisition unit is used to receive the redirect request of the MTC information that carries the MTC terminal that said target MME sends; First judging unit; The MTC information and the current network load condition at the MTC terminal that is used for carrying according to the redirect request that said second acquisition unit receives; Judge whether target MME self is in the network congestion state, if then start second and start the refusal unit; Otherwise, start second and accept the unit; The first refusal unit is used to refuse the said preceding redirect request of changeing, and before said source MME sends, changes the redirect request refuse information; First accepts the unit, is used to accept the preceding commentaries on classics redirect request of said source MME, sends redirect request to the target eNode B of current switching.

In such scheme, second of said target MME accepts the unit, specifically is used for sending the redirect request that carries said MTC information to the target eNode B of current switching; Said system also comprises: said target eNode B; This target eNode B specifically comprises: the unit is accepted in the 3rd acquiring unit, the 3rd judging unit, the 3rd refusal unit and the 3rd; Wherein, The 3rd acquiring unit is used to receive second of said target MME and accepts the said redirect request that the unit sends; The 3rd judging unit; The MTC information at the MTC terminal that is used for carrying and current network load state according to the redirect request that said the 3rd acquiring unit receives; Judge the current network congestion state that whether is in of target eNode B self, if start said the 3rd refusal unit; Otherwise, start the said the 3rd and accept the unit; The 3rd refusal unit is used to refuse said redirect request, sends the redirect request refuse information to said target MME; The 3rd accepts the unit, is used to accept said redirect request, continues the subsequent operation of current switching.

In such scheme, said source MME also is used for, and receives the preceding commentaries on classics redirect request refuse information that said target MME sends; Afterwards, reselect target MME, and send the preceding commentaries on classics redirect request that carries said MTC information, perhaps, return switch failure information, notify said source eNodeB current handoff failure to the source eNodeB that initiates current switching to selected target MME; Said target MME also comprises the reception feedback unit, and this reception feedback unit is used to receive the redirect request refuse information that said target eNode B is returned, and before said source MME sends, changes redirected refuse information.

Congestion control scheme when the present invention's proposition is switched to the MTC terminal, target eNode B or target MME judge according to the MTC information at the MTC terminal that gets access to whether self is in the network congestion state; And, refuse or allow current switching according to judged result, move to objective network at the MTC terminal from source network; And when switching; Realized the congested control of objective network to the MTC terminal, the influence that MTC is switched existing network is reduced to a minimum, and makes the regular traffic of common UE can not receive the influence of frequently switching when move at a large amount of MTC terminal; Thereby it is congested to prevent that effectively network from taking place, and farthest effectively utilizes Internet resources through the network optimization.

Description of drawings

Fig. 1 is an EPS network system architecture sketch map in the prior art;

Fig. 2 is common UE in prior art when eNodeB moves to target eNode B from the source, carries out the flow chart that X2 switches;

Fig. 3 is common UE in prior art when eNodeB moves to target eNode B from the source, carries out the flow chart that S1 switches;

Fig. 4 is the realization flow figure of the jamming control method in the MTC switching of the present invention;

Fig. 5 carries out in the X2 handoff procedure a kind of realization flow sketch map of congested control when the present invention is directed to MTC UE eNodeB moves to target eNode B from the source;

Fig. 6 when eNodeB moves to target eNode B from the source to MTC UE, carries out in the S1 handoff procedure a kind of realization flow sketch map of congested control;

Fig. 7 when eNodeB moves to target eNode B from the source to MTC UE, carries out in the X2 handoff procedure the another kind of realization flow sketch map of congested control;

Fig. 8 when eNodeB moves to target eNode B from the source to MTC UE, carries out in the S1 handoff procedure the another kind of realization flow sketch map of congested control.

Embodiment

Basic thought of the present invention is: when the wireless zone of MTC terminal eNodeB from the source moves to the wireless zone of target eNode B; Carry out in the handoff procedure; Be directed against the congested control at MTC terminal, thereby avoid the MTC terminal to move the regular traffic that the switching that causes has influence on ordinary terminal.

Jamming control method during a kind of MTC of the present invention switches with reference to shown in Figure 4, mainly may further comprise the steps:

Step 401: in the process of carrying out the MTC switching, target eNode B or target MME obtain the MTC information at MTC terminal;

Step 402: target eNode B or target MME judge according to the MTC information at the MTC terminal that gets access to and current network load state whether self is in the network congestion state, if refusal carries out current switching; Otherwise, proceed current switching.

Here, said MTC information specifically can comprise the one or more arbitrarily of following three kinds of information: MTC indication (MTC Indication), low priority indication (Low Priority), MTC distributes with keep priority (ARP).

Wherein, MTC Indication is used to indicate MTC UE itself, and it is low priority MTC terminal that Low Priority is used to indicate said MTC UE.

In the EPS system; Carry a level qos parameter comprise QCI, ARP, GBR ensure bit rate, MBR Maximum Bit Rate, with the AMBR aggregate maximum bit rate; Wherein, ARP and QCI are used for GBR and Non-GBR carries, and the ARP main purpose is to make decision in the situation of resource limit to accept or refuse the foundation of carrying or revise request.Simultaneously, when ARP is used for special resource limit, for example switch, which carrying decision abandons.In case after carrying was set up successfully, ARP did not influence the transmission of packet.

Carry in the level qos parameter at EPS, ARP has defined 1～15 grade, is used for the carrying distribution and the switching controls of ordinary terminal.MTC ARP for the MTC terminal; The carrying distribution and the switching controls that are used for the MTC terminal; It can be through the concrete value of definition MTC ARP; To distinguish mutually with the ARP of ordinary terminal, for example can define 20～30 grades and be MTCARP, each network element in the network can judge that current carrying foundation, modification, switching still are the MTC terminal service for ordinary terminal according to the concrete value of ARP.

In the practical application, two kinds of switching modes are arranged generally, a kind of mode is between source eNodeB and the target eNode B X2 interface to be arranged, and source eNodeB directly initiates to switch to target eNode B through X2 interface; Another kind of mode is not have X2 interface between source eNodeB and the target eNode B, and source eNodeB directly initiates to switch to target eNode B through the S1 interface.

To the switching of adopting X2 interface to carry out, concrete implementation procedure of the present invention is following:

Source eNodeB during current MTC switches from the MTC terminal or source MME obtain the MTC information at said MTC terminal, and initiate to carry the handoff request of said MTC information to said target eNode B;

The handoff request that target eNode B reception sources eNodeB initiates, and, judge whether self is in the network congestion state according to the MTC information at the MTC terminal of carrying in the said handoff request and current network load state; If, refuse the handoff request of said source eNodeB, send switch failure information to said source eNodeB; Otherwise, accept said handoff request, continue the subsequent operation of current switching.

Wherein, said switch failure information comprises cause value and/or stand-by period, and this cause value is specially the current indication that is in the network congestion state of said target eNode B; The said stand-by period is used to indicate source eNodeB to select current goal eNodeB to want elapsed time once more from current being denied to.

To the switching of adopting the S1 interface to carry out, concrete implementation procedure of the present invention is following:

When being attached to the network at source MME place at said MTC terminal, said MTC terminal is carried the source MME to current switching with the MTC information of self through attach request; Perhaps, when being attached to the network at said source MME place at said MTC terminal, set up in the process of carrying, said source MME obtains the MTC information at said MTC terminal from service quality (QoS) parameter at said MTC terminal.

Said source MME sends to said target MME and carries the preceding commentaries on classics redirect request of obtaining MTC information to some extent;

The preceding commentaries on classics redirect request that the target MME reception sources MME of current switching sends, and, judge whether self is in the network congestion state according to the MTC information and the current network load condition at the MTC terminal of wherein carrying; If, refuse the said preceding redirect request of changeing,, changes said source MME the redirect request refuse information before sending; Otherwise, accept the preceding commentaries on classics redirect request of said source MME, send redirect request to the target eNode B of current switching.

Wherein, said target MME is specially the redirect request of the MTC information that carries the MTC terminal to the redirect request of the target eNode B transmission of current switching;

Afterwards; Said method can also comprise: the redirect request that said target eNode B receiving target MME sends; And, judge self current network congestion state that whether is in according to the MTC information at the MTC terminal of carrying in this redirect request and current network load state, if; Refuse said redirect request, send the redirect request refuse information to said target MME; Otherwise, continue the subsequent operation of current switching.

Said target eNode B is after said target MME sends the redirect request refuse information, and said method also comprises:

Said target MME receives after the said redirect request refuse information, before the source of current switching MME returns, changes the redirect request refuse information, refuses the current preceding commentaries on classics redirect request of said source MME;

Afterwards, said source MME reselects target MME, and sends the preceding commentaries on classics redirect request that carries said MTC information to selected target MME; Perhaps, said source MME returns switch failure information to the source of current switching eNodeB, the current handoff failure of notification source eNodeB.

Wherein, said switch failure information and the said preceding redirect request refuse information of changeing comprise cause value and/or stand-by period, and this cause value is specially the current indication that is in the network congestion state of said target MME; The said stand-by period is used to indicate source MME to select said target MME to want elapsed time once more from current being denied to.

Be to realize that said method, the present invention also provide MTC congestion control device in switching, this device mainly comprises: acquiring unit, judging unit, refusal unit and accept the unit; Wherein, Acquiring unit is used for carrying out the process that MTC switches, and gets access to the MTC information at MTC terminal; Judging unit, the MTC information and the current network load condition at the MTC terminal that is used for getting access to according to said acquiring unit judge whether target eNode B or target MME are in the network congestion state; If; Then start the refusal unit, otherwise, start and accept the unit; The refusal unit is used for refusal and carries out current switching; Accept the unit, be used to proceed current switching.

Here, the congestion control device during above-mentioned MTC switches specifically can be arranged on the target eNode B or target MME that can carry out the MTC switching, or independent the setting, but is connected with this target eNode B or target MME.

In addition, the present invention also provides the congestion control system in following two kinds of MTC switching:

Congestion control system during first kind of MTC switches is applicable to the switching of adopting X2 interface to carry out, and said system comprises: source eNodeB and target eNode B, wherein,

Source eNodeB is used for from the MTC terminal or source MME obtains the MTC information at said MTC terminal, and initiates to carry the handoff request of said MTC information to said target eNode B;

Target eNode B comprises: the unit is accepted in first acquiring unit, first judging unit, the first refusal unit and first, and wherein, first acquiring unit is used for receiving the MTC information at the MTC terminal that handoff request that said source eNodeB initiates carries; First judging unit; The MTC information and the current network load condition at the MTC terminal that is used for carrying according to the handoff request that said first acquiring unit receives; Judge whether target eNode B self is in the network congestion state, if then start the said first refusal unit; Otherwise, start said first and accept the unit; The first refusal unit is used to refuse the handoff request of said source eNodeB, sends switch failure information to said source eNodeB; First accepts the unit, is used to accept the handoff request of said source eNodeB, continues the subsequent operation of current switching.

Congestion control system during second kind of MTC switches is applicable to and adopts the S1 interface to carry out, and said system comprises: source MME and target MME, wherein,

Source MME is used to obtain the MTC information at MTC terminal, and sends the preceding commentaries on classics redirect request that carries this MTC information to said target MME;

Target MME comprises: the unit is accepted in second acquisition unit, second judging unit, the second refusal unit and second, and wherein, second acquisition unit is used to receive the redirect request of the MTC information that carries the MTC terminal that said target MME sends; First judging unit; The MTC information and the current network load condition at the MTC terminal that is used for carrying according to the redirect request that said second acquisition unit receives; Judge whether target MME self is in the network congestion state, if then start second and start the refusal unit; Otherwise, start second and accept the unit; The first refusal unit is used to refuse the said preceding redirect request of changeing, and before said source MME sends, changes the redirect request refuse information; First accepts the unit, is used to accept the preceding commentaries on classics redirect request of said source MME, sends redirect request to the target eNode B of current switching.

Here, second of said target MME accepts the unit, specifically is used for sending the redirect request that carries said MTC information to the target eNode B of current switching;

Said system also comprises: said target eNode B; This target eNode B specifically comprises: the unit is accepted in the 3rd acquiring unit, the 3rd judging unit, the 3rd refusal unit and the 3rd; Wherein, The 3rd acquiring unit is used to receive second of said target MME and accepts the said redirect request that the unit sends; The 3rd judging unit; The MTC information at the MTC terminal that is used for carrying and current network load state according to the redirect request that said the 3rd acquiring unit receives; Judge the current network congestion state that whether is in of target eNode B self, if start said the 3rd refusal unit; Otherwise, start the said the 3rd and accept the unit; The 3rd refusal unit is used to refuse said redirect request, sends the redirect request refuse information to said target MME; The 3rd accepts the unit, is used to accept said redirect request, continues the subsequent operation of current switching.

Here, said source MME also is used for, and receives the preceding commentaries on classics redirect request refuse information that said target MME sends; Afterwards, reselect target MME, and send the preceding commentaries on classics redirect request that carries said MTC information, perhaps, return switch failure information, notify said source eNodeB current handoff failure to the source eNodeB that initiates current switching to selected target MME; Said target MME also comprises the reception feedback unit, and this reception feedback unit is used to receive the redirect request refuse information that said target eNode B is returned, and before said source MME sends, changes redirected refuse information.

Embodiment one

Present embodiment is MTC UE when eNodeB moves to target eNode B from the source, carries out a kind of jamming control method in the X2 handoff procedure, and in the present embodiment, MTC terminal (MTC UE) is linked into the EPS network and carries out data communication with MTC Server.The eNodeB wireless zone moves to the target eNode B wireless zone to MTC UE from the source; Source eNodeB initiates handoff request to target eNode B; Carry MTC indication (MTC Indication) and/or the low priority indication (Low Priority) of MTC UE, indicating target eNodeB carries out MTC and switches.Target eNode B is carried out MTC and is switched according to said handoff request: judge self whether to be in the network congestion state of setting in MTC setting or other congested controls, if, then refuse this handoff request, avoid existing network is impacted; Otherwise, proceed follow-up handover operation.

As shown in Figure 5, the idiographic flow of present embodiment is following:

S501, MTC UE has been linked into the EPS network, and carries out data interaction through the EPS carrying of setting up with far-end MTCServer (not showing among Fig. 5), carries out transfer of data;

MTC UE is when being attached to the EPS network; Set up in the RRC connection procedure; Source eNodeB obtains MTC information such as MTC Indication and/or the Low Priority of MTC UE from MTCUE; And after RRC sets up successfully, carry the said MTC information of preservation in the context (RRC Context) of setting up in self radio.

S502, source eNodeB initiates measurement control order to MTC UE, the position limitation information of configuration MTC UE and measurement rule;

S503, MTC UE be according to said measurement rule, self positional information is included in issues source eNodeB in the measurement report;

S504, the positional information that provides in the measurement report of source eNodeB according to MTC UE transmission is MTC UE select target eNodeB, and decision is initiated to switch;

S505, source eNodeB initiates switching to target eNode B, and (HO handover) asks, and carries HO parameters such as RRC context, Target Cell ID, Signalling context, E-RAB context and give target eNode B;

Wherein, the MTC Indication and/or the Low Priority that include MTC UE among the RRC context.

S506, target eNode B is carried out the congested control of MTC, detects the current network load and has reached pre-configured network congestion threshold value, judges the network congestion state that self is in.

Here, after target eNode B is received handoff request, search MTC information among the RRC Context that can comprise therein; According to MTC information that is found and pre-configured network congestion threshold value; Judge whether self is in the network congestion state, and according to judged result, whether decision switches.

Particularly; After target eNode B is received the handoff request of the MTC Indication that includes MTC UE and/or LowPriority; Detect present network load, for example can detect current self cpu load average, if 80% the level of reaching is just thought overload; Perhaps, carry out the statistics of interface flow and judge, can only handle the flow of 100G like target eNode B, current flux has reached 80M, then thinks network over loading; Afterwards, target eNode B judges according to MTC Indication and/or the LowPriority of MTC UE whether the current network load reaches pre-configured network congestion threshold values, if then judge the network congestion state that self is in, decision refusal handoff request; Otherwise, judge self to be in the network normal condition, allow to carry out MTC and switch.

Here, before carrying out the congested control of MTC, need be according to carrier policy, the network congestion threshold value of in the target eNode B configuration pin MTC being switched in advance.

For example; The network congestion threshold value that can switch MTC according to following mode one or mode two configuration pin: mode one: include MTC Indication with Low Priority, when perhaps only comprising Low Priority in said handoff request; Reach 40% at network load and carry out congested control, it is 40% that the first corresponding network congestion threshold value promptly is set; When in said handoff request, only including MTC Indication, reach 50% at network load and carry out congested control, it is 50% that the second corresponding network congestion threshold value promptly is set; Mode two: include MTC Indication and Low Priority, when perhaps only comprising Low Priority, reach 40% at network load and carry out congested control in said handoff request, it is 40% that the first corresponding network congestion threshold value promptly is set; When in said handoff request, only including MTC Indication, the second corresponding network congestion threshold value is set, consistent with common UE.

S507, target eNode B is sent switch failure information (HO failure) to source eNodeB, the handoff request of refusal source eNodeB;

Here, target eNode B can be carried reason (cause) value and/or first stand-by period in switch failure information, and notification source eNodeB current network is congested.

Wherein, the cause value is specially the current indication that is in the network congestion state of target eNode B, and what the current handoff request of notification source eNodeB was failed is former because the current network congestion state that is in of target eNode B.

Wherein, said first stand-by period is used to indicate source eNodeB to select current goal eNodeB to want elapsed time once more from current being denied to, and before promptly source eNodeB overflowed in the stand-by period, no longer selects this target eNode B to attempt switching.Here, first stand-by period can be pre-configured in the target eNode B, generally confirm according to the statistics of target eNode B network state, and be an empirical value.Be in the network busy period in target eNode B, can dispose the first long stand-by period, be in network idle period of time, can dispose the first short stand-by period in target eNode B.

S508 after source eNodeB receives switch failure information, according to the positional information of the MTCUE that provides in the said measurement report, for MTC UE selects other available target eNode B, and attempts initiating handoff request; Or before overflowing in first stand-by period, source eNodeB reattempts current goal eNodeB is initiated handoff request.

S509, after carrying out above-mentioned congested control, as long as there is target eNode B to accept the handoff request of source eNodeB, source eNodeB just sends the RRC reconfiguration message to MTC UE, and the wireless connections of MTC UE are switched to the target eNode B of accepting handoff request.

Here; No matter be the handoff request that other available target eNode B have been accepted source eNodeB; Still current goal eNodeB has accepted the handoff request of source eNodeB later in first stand-by period; Source eNodeB sends the RRC reconfiguration message to MTC UE, and the wireless connections of MTC UE are switched on the target eNode B of accepting handoff request, accomplish MTC UE from the source eNodeB to the switching of this target eNode B.

Embodiment two

Present embodiment is MTC UE when eNodeB moves to target eNode B from the source, carries out a kind of jamming control method in the S1 handoff procedure, and in the present embodiment, MTC terminal (MTC UE) is linked into the EPS network and carries out data communication with MTC Server.The eNodeB wireless zone moves to the target eNode B wireless zone to MTC UE from the source; Source eNodeB initiates handoff request through the S1 interface to source MME; Source MME initiates the forward direction redirect request to target MME; And carrying MTC Indication and/or the Low Priority of MTC UE, indicating target MME carries out MTC and switches; After target MME receives said forward direction redirect request, carry out MTC and switch: judge self whether to be in the network congestion state that MTC sets, if then refuse said forward direction redirect request; Otherwise, carrying out follow-up handover operation, target MME initiates redirect request to target eNode B, carries MTC Indication and/or the Low Priority of MTC UE; Afterwards, target eNode B is carried out the MTC handover operation according to said redirect request; Promptly judge self whether to be in the network congestion state that MTC sets, if then refuse said redirect request; Avoid existing network is impacted, otherwise, follow-up handover operation carried out.

As shown in Figure 6, the idiographic flow of present embodiment is following:

S601, MTC UE has been linked into the EPS network, and carries out data interaction through the EPS carrying of setting up with far-end MTCServer (not showing among Fig. 6), carries out transfer of data;

When MTC UE is attached to the EPS network; In attach request, carried the MTC information such as MTC Indication and/or Low Priority of self; After adhering to successfully, source MME is saved in identification information and the MTC information correspondences such as MTC Indication and/or Low Priority of MTC UE among the MM context of current carrying.

S602, eNodeB decision in source initiates to switch (HO initiation) through the S1 interface to target eNode;

S603; Source eNodeB initiates handoff request (HO request) to source MME; Carry the HO parameters such as ID of source eNodeB to the transparent data of target eNode B, Targer TAI, target eNode B; And the identification information that carries MTC UE, like the international mobile subscriber identity (IMSI, International Mobile Subscriber Identification Number) of MTC UE.

S604; Source MME is according to the Target TAI in the said handoff request; Select target MME; And change redirect request before sending and give target MME, and before said, change and carry MME UEcontext, Target TAI, source eNodeB in the redirect request to the transparent data of target eNode B, the information such as ID of target eNode B.

Wherein, International mobile subscriber identity (the IMSI that includes MTC UE among the said MME UE context; International Mobile Subscriber Identification Number), the MM context of terminal capability, S-GW address, P-GW address, APN (APN, Access Point Name) and current carrying.Here, the MTC information such as MTC Indication and/or Low Priority that comprises MTC UE among the said MM context.

S605, target MME carry out the congested control of MTC, detect the current network load and have reached pre-configured network congestion threshold value, judge the network congestion state that self is in.

Here; After changeing redirect request before target MME receives; Search MTC information among the MMEUE context of meeting commentaries on classics redirect request before this,, judge whether self is in the network congestion state according to MTC information that is found and pre-configured network congestion threshold value; And according to judged result, whether decision switches.

Particularly, target MME detects present network load after receiving the preceding commentaries on classics redirect request that includes MTC Indication and/or Low Priority, and the detection method that specifically detects target eNode B is similar, is not detailing; Afterwards, target MME judges whether the current network load reaches pre-configured network congestion threshold values, if, then judge the network congestion state that self is in, change redirect request before the decision refusal is said; Otherwise, judge self to be in the network normal condition, allow to carry out follow-up MTC handover operation.

Here, before carrying out the congested control of MTC, need be according to carrier policy, the network congestion threshold value of in target MME configuration pin MTC being switched in advance.For example, can adopt mode one described in the step S506 or mode two to be configured, the concrete numerical value of institute's configuration network congestion threshold can with step S506 in different, confirm according to the network operation situation of target MME.

S606, target MME change redirected refuse information before source MME sends, the preceding commentaries on classics redirect request of refusal source MME;

Here, said preceding commentaries on classics is redirected refuse information and can carries the cause value and second stand-by period, and notification source MME network congestion no longer selects this target MME to attempt switching before source MME overflowed in the stand-by period.

Wherein, the cause value is specially the current indication that is in the network congestion state of target MME, and what the current handoff request of notification source MME was failed is former because the current network congestion state that is in of target MME.

Wherein, second stand-by period was used to indicate source MME to select current goal MME to want elapsed time once more from current being denied to.Here, second stand-by period can be pre-configured among the target MME, generally confirm according to the statistics of target MME network state, and be an empirical value.Be in the network busy period at target MME, can dispose the second long stand-by period, be in network idle period of time, can dispose the second short stand-by period at target MME.

S607, source MME select other available target MME, and change redirect request before attempting initiating after receiving and change being redirected refuse information before said, or after overflowing in second stand-by period, source MME changes redirect request before selecting current goal MME to attempt carrying out again.

S608, when all MME refused the current preceding commentaries on classics redirect request of source MME, source MME returned switch failure information (HO failure), notification source eNodeB handoff failure to source eNodeB;

Here; Said switch failure information also can comprise reason (cause) value; This cause value specifically can be the current indication that all is in the network congestion state of all available target MME, and what the current handoff request of notification source eNodeB was failed is former because the current network congestion state that all is in of all available target MME.

S609; If there is target MME can accept the current preceding commentaries on classics redirect request of source MME; Then accept the current preceding target MME that changes redirect request of source MME and send redirect request message to target eNode B; The entry address, EPS Bear_QoS parameter, source eNodeB of carrying S-GW is to information such as the MTC Indication of target eNode B transparent data and MTC UE and/or Low Priority, and request is switched;

S610, basic identical with step 506, different is; Target eNode B is from the redirect request message that target MME sends; Find the MTC information such as MTC Indication and/or Low Priority of MTC UE, and judging when self being in the network congestion state the said redirect request of decision refusal; Self be in the network normal condition in judgement, allow to carry out follow-up MTC and switch.

In the practical application, after target eNode B is received redirect request message,, allow to switch, EPS Bear_QoS is insinuated E-RAB QoS, and be MTC UE distributing radio resource according to qos parameter if target eNode B is in the network normal condition; If target eNode B is in the network congestion state, then the redirect request that target MME initiates is refused in decision, and back extended meeting is sent to target MME and is redirected refuse information.

S611, target eNode B is sent to target MME and is redirected refuse information, the redirect request message of refusal target MME, target MME is released to the Internet resources that said MTC UE reserves.

Here; Can also carry the cause value in the said redirected refuse information; The cause value is specially the current indication that is in the network congestion state of target eNode B, and the current redirect request of notification target MME is unaccepted former because the current network congestion state that is in of target eNode B.

S612 changes before target MME sends and is redirected refuse information to source MME, the current preceding commentaries on classics redirect request of refusal source MME;

Here, change to be redirected in the refuse information before said and also can to carry cause value, identical among this cause value and the step S611, it is unaccepted former in the current network congestion state that is in of target eNode B to be used for the current preceding commentaries on classics redirect request of notification source MME.

After S613, source MME received that said preceding commentaries on classics is redirected refuse information, eNodeB returned switch failure information to the source, the current handoff failure of notification source eNodeB.

Here, also can carry the cause value in the said switch failure information, identical among this cause value and the step S611, it is unaccepted former because the current network congestion state that is in of target eNode B to be used for the current handoff request of notification source eNodeB.

Embodiment three

Present embodiment is MTC UE when eNodeB moves to target eNode B from the source, carries out the another kind of jamming control method in the X2 handoff procedure, and in the present embodiment, MTC terminal (MTC UE) is linked into the EPS network and carries out data communication with MTC Server.The eNodeB wireless zone moves to the target eNode B wireless zone to MTC UE from the source, and source eNodeB initiates to switch to target eNode B, carries the MTC ARP of MTC UE, and indicating target eNodeB carries out MTC and switches; After target eNode B receives said handoff request, carry out MTC and switch: judge self whether to be in the network congestion state that MTC sets, if, then refuse this handoff request, avoid existing network is impacted; Otherwise, continue to carry out follow-up handover operation.

As shown in Figure 7, the idiographic flow of present embodiment is following:

S701, MTC UE are in setting up load bearing process, and network distributes MTC ARP for this carries.

MTC UE sets up RRC earlier and connects, and initiate attach request to source MME when being attached to the EPS network.Source MME carries for this MTC UE sets up EPS, and returns EPS Bearer context to source eNodeB, carries qos parameter, includes the MTC ARP of MTC UE in this qos parameter.Source eNodeB is mapped as the E-RAB qos parameter with this qos parameter, and sets up wireless EPS carrying, and the E-RAB qos parameter that will include the MTC ARP of MTCUE is kept among the E-RAB Context.

S702, MTC UE has been linked into the EPS network, and carries out data interaction through the EPS carrying of setting up with far-end MTCServer (not showing among Fig. 7);

S703～S705, S502～S504 is identical with step;

S706; S505 is basic identical with step, and whether different is or not MTC Indication and/or the Low Priority that in RRC context, includes MTC UE; But in E-RAB context, include the MTC ARP of MTC UE, indicate purpose eNodeB to carry out MTC and switch;

S707; S506 is basic identical with step; Different is: target eNode B is not to judge according to MTCIndication and/or Low Priority whether the current network load reaches pre-configured network congestion threshold value; But according to the MTC ARP of MTC UE, detect the current network load and whether reach preset network congestion threshold values, judge whether self is in the network congestion state.

Accordingly, the network congestion threshold value that configuration MTC switches in target eNode B also has difference on concrete the realization.For example, can according to the network operation situation of target eNode B, corresponding congested control threshold value be set in advance in target eNode B to the different stage of MTC ARP.

Particularly, after target eNode B receives the handoff request of the said MTC of carrying ARP, according to the rank of this MTC ARP; Whether checking current network load reaches its corresponding network congestion threshold value; If then judge the network congestion state that self is in, the said handoff request of decision refusal; Otherwise, judge self to be in the network normal condition, allow to carry out follow-up MTC and switch.

S708-S710, S507-509 is identical with step.

Embodiment four

Present embodiment is MTC UE when eNodeB moves to target eNode B from the source, carries out the another kind of jamming control method in the S1 handoff procedure, and in the present embodiment, the MTC terminal is linked into the EPS network and carries out data communication with MTCServer.The eNodeB wireless zone moves to the target eNode B wireless zone to MTC UE from the source, and source eNodeB initiates handoff request through the S1 interface to source MME, and source MME initiates the forward direction redirect request to target MME, and carries MTC ARP.Target MME identification is that MTC switches, and judges self whether to be in the network congestion state that MTC sets, if then refuse said forward direction redirect request; Otherwise, carrying out follow-up handover operation, target MME continues to initiate redirect request to target eNode B; Target eNode B identification is that MTC switches, and judges self whether to be in the network congestion state that MTC sets, if; Then refuse said redirect request; Avoid existing network is impacted, otherwise, follow-up handover operation carried out.As shown in Figure 8, the idiographic flow of present embodiment is following:

S801, MTC UE are in setting up load bearing process, and network distributes MTC ARP for carrying.

MTC UE is adhering to and is setting up in the EPS load bearing process, in HSS or SPR, the contracted MTC ARP of MTCUE of network, and comprised this MTC ARP carrying in the qos parameter that distributes for EPS, be kept among the EPS Bearer Context of current carrying among the MME of source.

S802, S702 is identical with step;

S803～S804, identical with step S602～603;

S805; Basic identical with S604; Different is that the MME UE context that preceding commentaries on classics redirect request is carried specifically comprises: the information such as qos parameter among the IMSI of MTC UE, terminal capability, S-GW address, P-GW address, APN and the said EPS Bearer Context.Wherein, the MTC ARP that comprises MTC UE in the qos parameter.

S806, S605 is basic identical with step, and different is;, changes target MME redirect request before receiving; Can in MME UE Context, search MTC ARP, and, judge whether self is in the network congestion state according to MTC ARP and pre-configured network congestion threshold value.

Here, identical among the process of the network congestion threshold value that configuration MTC switches in target MME and the step S707, different is that the different stage of corresponding MTC ARP can be provided with the concrete value of congested control threshold value according to the network operation situation of target MME.

Particularly; After target MME receives the preceding commentaries on classics redirect request of the said MTC of carrying ARP; According to the rank of this MTC ARP, whether checking current network load reaches its corresponding network congestion threshold value, if; Then judge the network congestion state that self is in, change redirect request before the decision refusal is said; Otherwise, judge self to be in the network normal condition, allow to carry out follow-up MTC and switch.

S807～S809, S606～S608 is identical with step;

S810; S609 is basic identical with step; Different is, target MME sends to the entry address of carrying S-GW in the redirect request message of target eNode B, EPS Bear_QoS parameter, source eNodeB to information such as target eNode B transparent datas, and request is switched.Wherein, the MTC ARP that in EPS Bearer qos parameter, includes MTC UE.

S811, S610 is basic identical with step, and different is; Target eNode B is from the redirect request message that target MME sends; Find the MTC ARP of MTC UE, and, judge whether self is in the network congestion state according to the MTC ARP of the MTCUE that finds; Detailed process of judging and the process that the network congestion threshold value is set in advance are all identical with step S707.According to judged result, the subsequent operation of carrying out, S707 is different with step.

Particularly, target eNode B is received redirect request, can in the EPS of redirect request Bear_QoS, search MTC ARP, according to the MTC ARP that finds.When judgement self was in the network normal condition, target eNode B allowed to switch, and EPS Bear_QoS is insinuated E-RAB QoS, and according to the qos parameter distributing radio resource, when judgement self was in the network congestion state, said redirect request was refused in decision.

S812～S814, S611～S613 is identical with step.

The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (15)

1. the jamming control method during a MTC switches is characterized in that said method comprises:

In the process of carrying out the MTC switching, target eNode B or target MME judge according to the MTC information at the MTC terminal that gets access to and current network load state whether self is in the network congestion state, if refusal carries out current switching; Otherwise, proceed current switching.

2. the jamming control method during MTC according to claim 1 switches; It is characterized in that; Said target eNode B judges that according to the MTC information at the MTC terminal that gets access to and current network load state whether self is in the network congestion state, is specially:

The MTC information at the MTC terminal of carrying in the handoff request according to received source eNodeB initiation and current network load state, target eNode B judges whether self is in the network congestion state; If, refuse the handoff request of said source eNodeB, send switch failure information to said source eNodeB; Otherwise, accept said handoff request, continue the subsequent operation of current switching.

3. the jamming control method during MTC according to claim 2 switches is characterized in that, before the said handoff request that said target eNode B reception sources eNodeB initiates, said method also comprises:

Said source eNodeB from said MTC terminal or source MME obtain the MTC information at said MTC terminal, and initiate to carry the handoff request of said MTC information to said target eNode B.

4. the jamming control method during MTC according to claim 1 switches is characterized in that, said target MME judges that according to the MTC information at the MTC terminal that gets access to and current network load state whether self is in the network congestion state, is specially:

The MTC information and the current network load condition at the MTC terminal of carrying in the preceding commentaries on classics redirect request according to received source MME transmission, target MME judges whether self is in the network congestion state; If, refuse the said preceding redirect request of changeing,, changes said source MME the redirect request refuse information before sending; Otherwise, accept the preceding commentaries on classics redirect request of said source MME, send redirect request to the target eNode B of current switching.

5. the jamming control method during MTC according to claim 4 switches is characterized in that, before said target MME received the said preceding commentaries on classics redirect request that carries MTC information, said method also comprised:

Said source MME obtains the MTC information at said MTC terminal, and sends the preceding commentaries on classics redirect request that carries this MTC information to said target MME.

6. the jamming control method in the MTC handoff procedure according to claim 5 is characterized in that, said source MME obtains said MTC information, is specially:

When being attached to the network at source MME place at said MTC terminal, carry the MTC information of self to said source MME through attach request at said MTC terminal;

Perhaps, when being attached to the network at said source MME place at said MTC terminal, set up in the process of carrying, said source MME obtains the MTC information at said MTC terminal from service quality (QoS) parameter at said MTC terminal.

7. the jamming control method during MTC according to claim 4 switches is characterized in that,

Said target MME sends redirect request to the target eNode B of current switching, is specially: said target MME sends the redirect request of the MTC information that carries the MTC terminal to the target eNode B of current switching;

Afterwards; Said method also comprises: said target eNode B receives this redirect request; And, judge self current network congestion state that whether is in according to the MTC information at the MTC terminal of carrying in this redirect request and current network load state, if; Refuse said redirect request, send the redirect request refuse information to said target MME; Otherwise, continue the subsequent operation of current switching.

8. the jamming control method during MTC according to claim 7 switches is characterized in that, after said target MME sent the redirect request refuse information, said method also comprised in said target eNode B:

Said target MME receives after the said redirect request refuse information, before the source of current switching MME returns, changes the redirect request refuse information, refuses the current preceding commentaries on classics redirect request of said source MME;

Afterwards, said source MME reselects target MME, and sends the preceding commentaries on classics redirect request that carries said MTC information to selected target MME; Perhaps, said source MME returns switch failure information to the source of current switching eNodeB, the current handoff failure of notification source eNodeB.

9. the jamming control method in switching according to each described MTC of claim 2 to 8; It is characterized in that; Said switch failure information and the said preceding redirect request refuse information of changeing comprise cause value and/or stand-by period, and this cause value is specially said target eNode B or the current indication that is in the network congestion state of target MME; The said stand-by period is used to indicate source eNodeB or source MME to select said target eNode B or target MME to want elapsed time once more from current being denied to.

10. the jamming control method in switching according to each said MTC of claim 1 to 8; It is characterized in that said MTC information specifically comprises the one or more arbitrarily of following three kinds of information: MTC indication (MTC Indication), low priority indication (Low Priority), MTC ARP.

11. the congestion control device during a MTC switches is characterized in that said device comprises: acquiring unit, judging unit, refusal unit and accept the unit, wherein,

Acquiring unit is used for carrying out the process that MTC switches, and gets access to the MTC information at MTC terminal;

Judging unit, the MTC information and the current network load condition at the MTC terminal that is used for getting access to according to said acquiring unit judge whether target eNode B or target MME are in the network congestion state; If; Then start the refusal unit, otherwise, start and accept the unit;

The refusal unit is used for refusal and carries out current switching;

Accept the unit, be used to proceed current switching.

12. the congestion control system during a MTC switches is characterized in that said system comprises: source eNodeB and target eNode B, wherein,

Source eNodeB is used for from the MTC terminal or source MME obtains the MTC information at said MTC terminal, and initiates to carry the handoff request of said MTC information to said target eNode B;

Target eNode B comprises: the unit is accepted in first acquiring unit, first judging unit, the first refusal unit and first, wherein,

First acquiring unit is used for receiving the MTC information at the MTC terminal that handoff request that said source eNodeB initiates carries;

First judging unit; The MTC information and the current network load condition at the MTC terminal that is used for carrying according to the handoff request that said first acquiring unit receives; Judge whether target eNode B self is in the network congestion state, if then start the said first refusal unit; Otherwise, start said first and accept the unit;

The first refusal unit is used to refuse the handoff request of said source eNodeB, sends switch failure information to said source eNodeB;

First accepts the unit, is used to accept the handoff request of said source eNodeB, continues the subsequent operation of current switching.

13. the congestion control system during a MTC switches is characterized in that said system comprises: source MME and target MME, wherein,

Source MME is used to obtain the MTC information at MTC terminal, and sends the preceding commentaries on classics redirect request that carries this MTC information to said target MME;

Target MME comprises: the unit is accepted in second acquisition unit, second judging unit, the second refusal unit and second, wherein,

Second acquisition unit is used to receive the redirect request of the MTC information that carries the MTC terminal that said target MME sends;

First judging unit; The MTC information and the current network load condition at the MTC terminal that is used for carrying according to the redirect request that said second acquisition unit receives; Judge whether target MME self is in the network congestion state, if then start second and start the refusal unit; Otherwise, start second and accept the unit;

The first refusal unit is used to refuse the said preceding redirect request of changeing, and before said source MME sends, changes the redirect request refuse information;

First accepts the unit, is used to accept the preceding commentaries on classics redirect request of said source MME, sends redirect request to the target eNode B of current switching.

The congestion control system during 14. MTC according to claim 13 switches is characterized in that,

Second of said target MME accepts the unit, specifically is used for sending the redirect request that carries said MTC information to the target eNode B of current switching;

Said system also comprises: said target eNode B, and this target eNode B specifically comprises: the unit is accepted in the 3rd acquiring unit, the 3rd judging unit, the 3rd refusal unit and the 3rd, wherein,

The 3rd acquiring unit is used to receive second of said target MME and accepts the said redirect request that the unit sends;

The 3rd judging unit; The MTC information at the MTC terminal that is used for carrying and current network load state according to the redirect request that said the 3rd acquiring unit receives; Judge the current network congestion state that whether is in of target eNode B self, if start said the 3rd refusal unit; Otherwise, start the said the 3rd and accept the unit;

The 3rd refusal unit is used to refuse said redirect request, sends the redirect request refuse information to said target MME;

The 3rd accepts the unit, is used to accept said redirect request, continues the subsequent operation of current switching.

The congestion control system during 15. MTC according to claim 14 switches is characterized in that,

Said source MME also is used for, and receives the preceding commentaries on classics redirect request refuse information that said target MME sends; Afterwards, reselect target MME, and send the preceding commentaries on classics redirect request that carries said MTC information, perhaps, return switch failure information, notify said source eNodeB current handoff failure to the source eNodeB that initiates current switching to selected target MME;

Said target MME also comprises the reception feedback unit, and this reception feedback unit is used to receive the redirect request refuse information that said target eNode B is returned, and before said source MME sends, changes redirected refuse information.

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