CN102244856B

CN102244856B - Method and apparatus for controlling downlink data transmission of MTC device

Info

Publication number: CN102244856B
Application number: CN201010176225.4A
Authority: CN
Inventors: 田野; 熊春山
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2010-05-13
Filing date: 2010-05-13
Publication date: 2014-11-26
Anticipated expiration: 2030-05-13
Also published as: CN102244856A

Abstract

The invention discloses a method and an apparatus for controlling downlink data transmission of a Machine-Type Communication (MTC) device. By employing the technical proposal provided by the embodiment of the invention, the control problem of the downlink data service transmission of a Machine Device (MD) having the time tolerance characteristic is solved. On the basis of the existing uplink data transmission control scheme, interaction processes between an MTC Server and each entity of a core network and between the entities within the core network are further enhanced, so that a system is capable of limiting the transmission of downlink data from the MTC Server to the MD according to the load condition of an access network and a (pre-) defined signing threshold, thus having the capability of supporting the downlink data transmission control.

Description

A kind of MTC equipment downlink data transmission control method and equipment

Technical field

The present invention relates to communication technical field, particularly a kind of MTC equipment downlink data transmission control method and equipment.

Background technology

Important component part as following Ubiquitous Network, machinery compartment (M2M, Machine-to-Machine) communication refers to employing wireless mobile communication technology, realizes and between machine and machine, machine and people, carries out data communication and mutual a series of technology and the general name of technical combinations.Such technology is being set up wireless connections, the approach of transmitting data information in real time for various terminal equipments provide between system, between remote equipment and between individual.

In order to meet well M2M communicating requirement, in August, 2009, the 3GPP of second stage (3rd Generation Partnership Project, third generation partner program) SA2 working group discusses and has passed through NIMTC (Network Improvement for Machine-Type Communications in 75 meetings, the network improvement of mechanical communication) WID (Work Item Description, job brief introduction) suggestion, planned before in June, 2010 technical research report of the demand completion system framework that proposes for the first stage: TR23.888 " System Improvements for Machine-Type Communications ".

In the SA1 of first stage working group report TS22.368 " Network improvement for MTC ", defined MTC (the Machine-Type Communications of a kind of Time Controlled (time is controlled), mechanical communication) characteristic, refer to: MTC equipment (MTC Device, MD) transceiving data within predefined certain time period only, and in other times section, avoid transmitting unnecessary signaling and data message, specifically comprise following some demand:

1, Virtual network operator can limit MD access network.

2, Virtual network operator can be used in specific region these restrictions.

3, MD can determine when and be limited access network, and for example, the information of using network to provide determines whether initiating or delayed data transmission.

4, only have when MTC Server sends data to MD, send an indication for indicating because the reason MD of restriction is current unreachable can to MTC Server.

Obviously, one of core of above-mentioned characteristic demand is to require network to having the uplink and downlink communication of this class feature MD, to implement transmission control according to Access Network load state.

For the terminal equipment in idle condition, UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) system and LTE (Long Term Evolution, Long Term Evolution) system adopts service request procedure (Service Request) to process the data service request that up-downlink direction reaches.

In UMTS system, this process is in the main flow process of up-downlink direction respectively as Fig. 1, and shown in Fig. 2, in LTE system, this process is as Fig. 3, shown in Fig. 4.

At up direction, when terminal has data service to produce, terminal is directly initiated Service Request (service request) process.At down direction, when network side has data to arrive, core net management control entity (MME/SGSN) is initiated service request procedure by paging triggering terminal.Here detail is not launched, detailed step please refer to 3GPP TS23.060 and the TS23.401 of more recent version.

In order to realize, to thering is the transmission of time tolerance (Time Tolerant) characteristic MD, control, existing technical scheme proposes in Service Request process, and the method for carrying Access Network load information or load-threshold information by Iu/S1 interface signaling realizes the transmission of up direction and controls.Specifically, at up direction, when the MD in Idle state has data to arrive, it will be to network initiated service request process.According to the difference of main processing entities, there are following two kinds of methods of operation:

Method one, in the process of transparent transmission NAS (Non-Access Stratum) signaling Service Request, Access Network controlled entity (as RNC/eNodeB/HeNodeB) is notified Access Network load state to core net management control entity (as SGSN/MME) by Iu/S1 interface signaling.The latter according to the load state of current network and from HLR/HSS, obtain (in advance) definition offered load thresholding determine whether the service request of accepting MD.If the service request of network refusal MD, core net management control entity can be MD to be determined and safeguards that a reference time is to assist MD to carry out time delay wait, and by service-denial signaling, this time is informed to MD.When receiving service-denial signaling, MD will be take the above-mentioned time as reference, after waiting for a period of time, can again initiate service request.The main flow process of this process as shown in Figure 5.

Method two, after receiving the Service Request signaling that MD sends, the offered load threshold information that core net management control entity will define (in advance) in Iu/S1 interface is set up demand signalling is incidentally transferred to Access Network controlled entity.The latter determines whether according to the current loading condition of Access Network and the offered load thresholding that receives the service request of accepting MD.If the service request of network refusal MD, Access Network controlled entity can be MD and determines that a reference time assists MD to carry out time delay wait.Meanwhile, Access Network controlled entity is notified this reference time to core net management control entity by Iu/S1 interface failure response signaling, by the latter, it is safeguarded and passes through service-denial signaled MD.When receiving service-denial signaling, MD will be take the above-mentioned time as reference, after waiting for a period of time, can again initiate service request.The main flow process of this process as shown in Figure 6.

In a word, in the conventional method for time tolerance characteristic, if Access Network load reaches or exceed the offered load thresholding of (in advance) definition, network will be refused the service request of MD so, and can be its stand-by period as time delay reference of distribution.Core net management control entity (as SGSN/MME) is informed MD by Service Reject signaling by this time, and in this locality, preserves and safeguard this parameter information.Like this, reach synchronous between MD and core net management control entity, both are delayed and provide the operation of service to have identical cognition MD.According to this time delay stand-by period, MD after time of delay in section, will can not initiate service request for upstream data service, the transmission that network has just been realized up direction is thus controlled.

ICMP (Internet Control Message Protocol, Internet Control Message Protocol) is a sub-protocol of TCP/IP protocol suite, for transmit control message between IP main frame, router.Control message refers to the message of the networks such as network is logical obstructed, whether main frame can reach, whether route is available itself.ICMP message is encapsulated in IP packet to be transmitted, and protocol number is 1.

ICMP message is mainly to allow main frame identify different network conditions by different type (Type) and code (Code), and the detail of relevant ICMP message definition can be referring to RFC792 standard.Related to the present invention is that type is 3 ICMP message, and its Main Function is that notice main frame destination node is unreachable, and concrete message format is as follows:

Wherein, code domain implication is:

0-Destination?network?unreachable

1-Destination?host?unreachable

2-Destination?protocol?unreachable

3-Destination?port?unreachable

4-Fragmentation?required，and?DF?flag?set

5-Source?route?failed

6-Destination?network?unknown

7-Destination?host?unknown

8-Source?host?isolated

9-Network?administratively?prohibited

10-Host?administratively?prohibited

11-Network?unreachable?for?TOS

12-Host?unreachable?for?TOS

13-Communication?administratively?prohibited

In Ipv6 agreement, ICMP revised is ICMPv6, and detail can be referring to RFC4443/4884 standard.The protocol number using when ICMPv6 transmits in IP packet is 58.

In ICMPv6, for notifying the unreachable icmp message type of main frame destination node, be 1, concrete message format is as follows:

Wherein, code domain implication is:

0-no?route?to?destination

1-communication?with?destination?administratively?prohibited

2-beyond?scope?of?source?address

3-address?unreachable

4-port?unreachable

5-source?address?failed?ingress/egress?policy

6-reject?route?to?destination

In realizing process of the present invention, inventor finds that prior art at least exists following problem:

Demand according to first stage SA1 working group to MTC characteristic, UMTS system and LTE system should be able to be transmitted control to having the up-downgoing data service of Time Tolerant characteristic MD according to the load-threshold of Access Network load and (in advance) definition.But, existing method has mainly considered that MD in idle condition is in the situation that having upstream data to send, how network transmits the problem of controlling to MD according to network state, and could not propose for the transfer of data of down direction effectively transmission control program.This will make 3GPP network can not support the demand of machine type communication Time Tolerant characteristic completely.

Summary of the invention

The invention provides a kind of MTC equipment downlink data transmission control method and equipment, at down direction, according to the real time status of Access Network load, to thering is the MTC equipment of Time Tolerant characteristic, transmit control, thereby optimize service ability and the efficiency of transmission of whole system.

For achieving the above object, the embodiment of the present invention provides a kind of machine type communication MTC equipment downlink data transmission control method on the one hand, comprising:

When MTC server need to be to MTC device transmission downlink data, described MTC server has judged whether to start the time delay waiting timer of corresponding described MTC equipment;

If started the time delay waiting timer of corresponding described MTC equipment, downlink data described in described MTC server buffer;

When the time delay waiting timer of the described MTC equipment of described correspondence is overtime, described MTC server sends to corresponding MTC equipment by the described downlink data of buffer memory by network.

On the other hand, the embodiment of the present invention also provides a kind of MTC server, comprising:

Timer module, for setting the time delay waiting timer of the MTC equipment of corresponding current registration;

Judge module, for when needs are during to MTC device transmission downlink data, judges whether described timer module has started the time delay waiting timer of corresponding described MTC equipment;

Cache module, for when the judgement of described judge module has started the time delay waiting timer of corresponding described MTC equipment, downlink data described in buffer memory;

Communication module, when overtime for the time delay waiting timer of the described MTC equipment of correspondence that sets when described timer module, sends to corresponding MTC equipment by the described downlink data of described cache module institute buffer memory by network.

Compared with prior art, the present invention has the following advantages:

The technical scheme proposing by the application embodiment of the present invention, solved the transmission control problem with the data service of time tolerance characteristic MD down direction, on the basis of existing transmitting uplink data control program, by further enhancing MTC Server and each inter-entity of core net, the reciprocal process of inner each inter-entity of core net, make signing threshold constraints MTC Server that system can be based on Access Network loading condition and (in advance) definition to the transmission of MD downlink data, thereby there is the ability of supporting that downlink data transmission is controlled.

Accompanying drawing explanation

Fig. 1 be in prior art the service request procedure in UMTS system at the schematic flow sheet of up direction;

Fig. 2 be in prior art the service request procedure in UMTS system at the schematic flow sheet of down direction;

Fig. 3 be in prior art the service request procedure in LTE system at the schematic flow sheet of up direction;

Fig. 4 be in prior art the service request procedure in LTE system at the schematic flow sheet of down direction;

Fig. 5 is the schematic flow sheet of a kind of MTC equipment transmitting uplink data control method in prior art;

Fig. 6 is the schematic flow sheet of another kind of MTC equipment transmitting uplink data control method in prior art;

Fig. 7 is the schematic flow sheet of a kind of MTC equipment downlink data transmission control method in the embodiment of the present invention;

Fig. 8 is the schematic flow sheet of MTC equipment downlink data transmission control method under a kind of concrete application scenarios in the embodiment of the present invention;

Fig. 9 is the schematic flow sheet of a kind of MTC equipment downlink data transmission control method in the embodiment of the present invention;

Figure 10 is the schematic flow sheet of a kind of MTC equipment downlink data transmission control method in the embodiment of the present invention;

Figure 11 is the schematic flow sheet of a kind of MTC equipment downlink data transmission control method in the embodiment of the present invention;

Figure 12 is the structural representation of a kind of MTC server in the embodiment of the present invention; .

Embodiment

The present invention has the MD of time tolerance characteristic to propose a kind of method that downstream data traffic transmission is controlled.The method is on the basis of existing transmitting uplink data control program, by further enhancing MTC Server and each inter-entity of core net, the reciprocal process of inner each inter-entity of core net, make signing threshold constraints MTC Server that system can be based on Access Network loading condition and (in advance) definition to the transmission of MD downlink data, thereby there is the ability of supporting that downlink data transmission is controlled.

As shown in Figure 7, the schematic flow sheet of a kind of MTC equipment downlink data transmission control method providing for the embodiment of the present invention, the method specifically comprises the following steps:

Step S701, when MTC server need to be to MTC device transmission downlink data, MTC server has judged whether to start the time delay waiting timer of corresponding MTC equipment.

If started the time delay waiting timer of corresponding MTC equipment, execution step S702;

If be not activated the time delay waiting timer of corresponding MTC equipment, execution step S705.

Wherein, the time delay waiting timer of corresponding MTC equipment, being specially MTC server sets according to time delay stand-by period parameter or the MTC equipment delay wait state information of the MTC equipment getting from HLR or HSS, wherein, MTC server obtains the time delay stand-by period parameter of MTC equipment or the mode of MTC equipment delay wait state information from HLR or HSS, specifically comprises:

MTC server is receiving the logging in after registration request of MTC equipment, and MTC server is subscribed to time delay stand-by period parameter or the MTC equipment delay wait state information of MTC equipment to HLR or HSS.When the time delay stand-by period parameter of HLR or HSS judgement MTC equipment or time delay wait state change, MTC server receives time delay stand-by period parameter or the MTC equipment delay wait state information of the MTC equipment of the renewal that HLR or HSS send; Or,

When MTC server receives the notification message to the failure of MTC device transmission downlink data of service data gateway transmission, MTC server sends the time delay stand-by period parameter of MTC equipment or the inquiry request of MTC equipment delay wait state information to HLR or HSS, and receives time delay stand-by period parameter or the MTC equipment delay wait state information of the MTC equipment that HLR or HSS return.

Further, time delay stand-by period parameter or the MTC equipment delay wait state information of the MTC equipment of the renewal that MTC server reception HLR or HSS send, specifically comprise:

MTC server receives the notification message of the time delay stand-by period parameter about MTC equipment of HLR or HSS transmission, and MTC server is according to the time delay waiting timer of the corresponding MTC equipment of time delay stand-by period setting parameter of MTC equipment; Or,

MTC server receives the notification message about MTC equipment delay wait state information of HLR or HSS transmission, if MTC equipment is in time delay wait state, MTC server is according to the time delay waiting timer of the default corresponding MTC equipment of time delay stand-by period setting parameter.

Need to further be pointed out that, the time delay stand-by period parameter of above-mentioned MTC equipment also can produce in the following manner:

When MTC equipment is current can not reach the condition that sends upstream data time, the corresponding core net controlled entity of MTC equipment is determined transmitting uplink data failure, and generates the time delay stand-by period parameter of the MTC equipment upgrading;

The corresponding core net controlled entity of MTC equipment sends the time delay stand-by period parameter of the MTC equipment upgrading to HLR or HSS.

Step S702, MTC server buffer downlink data.

Step S703, MTC server judge that whether the time delay waiting timer of corresponding MTC equipment is overtime.

If overtime, execution step S704;

If do not have overtimely, return to step S703.

Deterministic process in this step can be periodic judgement, can be also to judge according to certain trigger condition, specifically judges that the variation of situation can't affect the protection range of the embodiment of the present invention.

Step S704, MTC server send to corresponding MTC equipment by the downlink data of buffer memory by network.

Step S705, MTC server need to send to the downlink data of MTC device transmission the corresponding network equipment, and need to be transmitted to the downlink data of MTC device transmission MTC equipment by the corresponding network equipment.

In the process of carrying out in this step, also comprise:

When MTC equipment is current can not reach the condition of downlink data receiving time, the corresponding core net controlled entity of MTC equipment is determined downlink data transmission failure, and generates the time delay stand-by period parameter of the MTC equipment upgrading;

The corresponding core net controlled entity of MTC equipment sends the time delay stand-by period parameter of the MTC equipment upgrading to HLR or HSS;

The corresponding core net controlled entity of MTC equipment sends the notification message to the failure of MTC device transmission downlink data, MTC server buffer downlink data by service data gateway to MTC server.

In concrete application scenarios, the above-mentioned notification message to the failure of MTC device transmission downlink data, is specially:

Characterize the inaccessible ICMP message of destination node; Or,

Characterize the inaccessible ICMPv6 message of destination node.

Compared with prior art, the present invention has the following advantages:

Below, in conjunction with concrete application scenarios, the technical scheme that the embodiment of the present invention is proposed is elaborated.

To the MD in idle condition, when having downlink data to arrive 3GPP network service gateway node (as S-GW), core net management control entity (as SGSN/MME) will send call signaling and trigger MD initiation service request procedure, be intended to set up wireless access and connect.At MD, to network, send service request signaling (as Service Request) afterwards, network and terminal equipment are processed according to existing technical scheme, according to current Access Network load state, judge whether terminal equipment can downlink data receiving.

If Access Network load meets the requirements, set up corresponding communication channel and receive corresponding downlink data.

Otherwise in the situation that Access Network load reaches or exceed (in advance) define grid load-threshold, network will be refused the service request of MD, and can be its time delay stand-by period of distribution.This parameter information is preserved and be responsible for safeguarding to core net management control entity (as SGSN/MME) in this locality.

In order to make MTC Server, can know the service delay information of 3GPP network to MD, and then effectively control the transmission of downlink data, in the embodiment of the present invention, core net management controlled entity needs the notice signaling (as Notify Request) of being passed through on S6a/S6d interface to notify to HLR/HSS after the time delay stand-by period parameter of upgrading MD, and this information is safeguarded.

It is the time delay stand-by period parameter that MD distributes for preserving network system that HLR/HSS increases time delay stand-by period parameter information (as Delayed Time) in Subscriber MD contextual information.

Except directly sending network to HLR/HSS, be that the definite time delay of MD is the stand-by period, in the situation that network does not provide time delay to wait for the reference time, when the transmission state of MD changes, whether SGSN/MME can (as Notify Request) increase indication information (as Delay State Indicator) thereby notify MD in time delay wait state to HLR/HSS in notice signaling.

Receive after this information, whether HLR/HSS can increase transfer of data that time delay wait state indication information (as Delay State Indicator) records MD by 3GPP network limits in Subscriber contextual information.

It is time delay stand-by period of arranging of MD or the time delay wait state of MD that MTC Server obtains 3GPP network system by Sh interface signaling (as User Data Request, Subscribe Notifications Request etc.) from equipment of the core network HLR/HSS.

According to the difference of adopted Sh interface signaling, MTC Server can have based on subscription with based on inquiring about two kinds of different acquisition methods:

Method one, subscription

MTC Server sends subscribing notification request (as Subscribe Notifications Request) signaling to HLR/HSS, when the time delay wait state that requires HLR/HSS to be the time delay stand-by period parameter that arranges of MD or MD in 3GPP network system changes, it is notified.

Method two, inquiry

MTC Server sends user data requests (as User-Data-Request) signaling to HLR/HSS, requires HLR/HSS to provide MD time delay stand-by period parameter information or the MD time delay wait state information of current record for it.

MTC Server is that the MD with time delay tolerance characteristic arranges a time delay waiting timer for controlling the transmission of down direction data service.If obtained the time delay stand-by period of MD from HLR/HSS, MTC Server is according to obtained time parameter value setting and start this timer so.If know that from HLR/HSS MD is in time delay wait state, MTC Server can arrange and start this timer according to given acquiescence time delay stand-by period of system (being aforesaid default time delay stand-by period parameter) so.

Specifically, the processing procedure of MTC Server is as follows:

When downlink data arrives and need to transmit to MD, whether MTC Server checks for this MD has started time delay waiting timer and determined subsequent operation.

If do not start time delay waiting timer, MTC Server is directly sent to 3GGP core net PDN Gateway node (as P-GW) by the IP packet of arrival so.

If started time delay waiting timer, MTC Server gets up the IP packet temporary cache of arrival so.After timer expiry, MTC Server can need to send to the continuation of 3GGP core net PDN Gateway node according to downlink data transmission.

Wherein, corresponding aforesaid method one, if it is the time delay stand-by period parameter that arranges of MD or the time delay wait state of MD that MTC Server takes the method based on subscribing to obtain 3GPP network system, so when MD on MTC Server, register complete after, MTC Server sends subscribing notification request (as Subscribe Notifications Request) signaling to HLR/HSS, requires HLR/HSS when the time delay wait state of the set stand-by period parameter of system or MD changes, it to be notified.

When the time delay wait state of the set time delay stand-by period parameter of system or MD changes, MTC Server receives sending out notice request (as the Push Notification Request) signaling that HLR/HSS sends, and with sending out notice, replys (as Push Notification Answer) signaling HLR/HSS is responded.Here, if the parameter of carrying in sending out notice demand signalling is 3GPP network system, be the time delay stand-by period that MD arranges, MTC Server is according to this parameter setting and start a time delay waiting timer so.If the time delay wait state that the parameter of carrying in sending out notice demand signalling is MD, MTC Server can arrange and start the timers undetermined such as a time delay according to the given acquiescence time delay stand-by period of system so.

On the other hand, corresponding aforesaid method two, if it is the time delay stand-by period parameter that arranges of MD or the time delay wait state of MD that MTC Server takes the method based on inquiry to obtain 3GPP network system, receiving when P-GW forwards the ICMP control packet being sent by S-GW so, MTC Server sends user data requests (as User Data Request) signaling to HLR/HSS, requires HLR/HSS that the time delay wait state information of MD time delay stand-by period parameter information or the MD of current record is provided.

When receiving user data that HLR/HSS sends and reply signaling, for the former MTC Server, therefrom extracting 3GPP network system is the time delay stand-by period parameter that MD arranges, and parameter value setting start a time delay waiting timer according to this.For the latter, when MTC equipment is during in time delay wait state, MTC Server can arrange and start a time delay waiting timer according to given acquiescence time delay stand-by period of system (being aforesaid default time delay stand-by period parameter).

In above-mentioned processing procedure, PDN Gateway node (as P-GW) is when receiving the downstream IP packet of MTC Server transmission, and P-GW carries out protocol conversion and adaptation according to the requirement of existing 3GPP agreement to packet.After completing the GTP protocol encapsulation of IP packet, it sends to service data gateway (as S-GW) by downlink data.If receive the ICMP control message that S-GW sends, P-GW completes protocol conversion and adaptation, to MTC Server, forwards ICMP packet.

On the other hand, service data gateway (as S-GW) is when receiving the downstream data packet of P-GW transmission, if MD is in connected state, between S-GW and object MD, set up wireless access and be connected, S-GW directly connects to MD transmitting downlink data by this so.If MD is in Idle state, be S-GW with object MD between do not set up wireless access and be connected, the S-GW downstream data packet that buffer memory arrives is also processed according to the service request flow process of network-triggered in agreement TS23.060/TS23.401, be that S-GW passes through downlink data notification (as Downlink Data Notification) signaling SGSN/MME to the MD initiation paging in Idle state, to set up wireless access, connect.

And when service data gateway (as S-GW) receives downlink data notification that SGSN/MME returns and replys (as Downlink Data Notification Acknowledge) signaling, if cause parameter indicates object MD owing to being caused paging operation to fail to carry out by network system restriction service; Or, unsuccessfully indicate (as Downlink Data Notification Failure Indication) signaling receiving the downlink data notification that SGSN/MME returns, it is unsuccessfully while providing due to transmission service due to network refusal to MD that cause parameter wherein indicates that service sets up, and S-GW sends the unreachable ICMP/ICMPv6 of destination host (Internet Control Message Protocol/ICMP for IPv6) control message through P-GW to MTC Server and notifies MTC Server object MD unreachable and be discarded as the downstream data packet of this MD buffer memory.

In practical application, specifically send ICMP message and still send the IP stack version that ICMPv6 message need to support according to core net and determine.If core net is supported IPv4 protocol stack, S-GW sends ICMP message; If core net is supported IPv6 protocol stack or two stack, S-GW sends ICMPv6 message so.

When producing the unreachable ICMP/ICMPv6 control message of destination host, S-GW has following operating procedure:

1) if adopt ICMP message, " type " is set to 3, " code " be set to 1; If adopt ICMPv6 message, " type " is set to 1, " code " be set to 3;

2), from extracting packets headers and front 8 bytes of data field for being encapsulated in the User IP packet GTP-U agreement of MD buffer memory, inserted in ICMP control message " Internet packet header+source data report " information field; If ICMPv6, should be no more than under the condition of the minimum MTU of IPv6 (Maximum Transfer Unit) information of inserting in ICMPv6 message in original subscriber IP packet as much as possible.

3) complete verification and calculating, result is inserted in " check code " information field.

4) from the IP address that is encapsulated in extraction source MTC Server and object MD in the User IP packet GTP-U agreement for MD buffer memory.Afterwards, thereby acquired source, object IP address are changed mutually to source, the object IP address of the IP grouping that is configured for encapsulating ICMP control message,, S-GW is using the IP address of obtained object MD as the source IP address of encapsulation ICMP/ICMPv6 message IP grouping, using the IP address of MTC Server as the object IP address of encapsulation ICMP/ICMPv6 message IP grouping.

5), according to the requirement of IP protocol specification, complete the filling in of other information fields of IP packet header of encapsulation ICMP/ICMPv6 message.

ICMP/ICMPv6 control message and for encapsulate the IP grouping of ICMP/ICMPv6 grouping build complete after, S-GW, according to the difference of S5/S8 interface protocol, takes different modes to send ICMP/ICMPv6 grouping to MTC Server.If what S5/S8 interface adopted is GTP (GPRS Tunneling Protocol) agreement, S-GW is encapsulated in GTP-U grouping and through P-GW, sends to MTC Server along former tunnel the IP grouping of the unreachable ICMP/ICMPv6 message of encapsulation destination host as service data unit; If if S5/S8 interface adopts PMIP is GRE (Generic Routing Encapsulation) agreement or other IP tunneling protocol, S-GW is encapsulated in the IP grouping of the unreachable ICMP/ICMPv6 message of encapsulation destination host as service data unit in the grouping of adopted tunnel protocol and through P-GW, sends to MTC Server along former tunnel so.

Consider that IP agreement does not guarantee the reliable payment of ICMP/ICMPv6 message, therefore in order to guarantee that MTC Server can correctly receive ICMP/ICMPv6 with greater probability, S-GW generally will repeatedly send the unreachable ICMP/ICMPv6 message of main frame, for example 3～5 times.

Further, core net management control entity (as SGSN/MME) is when receiving downlink data notification (as the Downlink Data Notification) signaling of S-GW transmission, first SGSN/MME checks time delay stand-by period parameter or the indication of MD time delay wait state of safeguarding in MD context, thereby judges that whether MD is in time delay wait state.

For object MD, if SGSN/MME not yet safeguards MD time delay stand-by period parameter or the indication of MD time delay wait state, or, the waits to be instructed such as time delay stand-by period parameter or time delay are expired or lost efficacy, SGSN/MME will reply with downlink data notification (as Downlink Data Notification Acknowledge) signaling S-GW will be responded, show that request is accepted, and initiate paging in the Routing Area/tracing area of MD registration, trigger MD and initiate up service request.

If SGSN/MME has safeguarded an effective time delay stand-by period parameter or the indication of time delay wait state, SGSN/MME will can not initiate paging to MD so, and will return to the notice request that downlink data notification is replied (as Downlink Data Notification Acknowledge) signaling refusal S-GW to S-GW, wherein cause parameter indicates object MD owing to being caused paging operation to fail to carry out by network system restriction service.

Here MD time delay wait state indication was lost efficacy or the term of validity of the expired MD of referring to time delay wait state indication reaches or exceeds the given acquiescence time delay stand-by period of system.

When SGSN/MME receives the service request signaling (as Service Request) with time tolerance characteristic MD initiation, SGSN/MME operates according to existing techniqueflow.In the situation that Access Network load meets the requirement of (in advance) define grid load-threshold, SGSN/MME will accept the service request of MD.In the situation that Access Network load meets or exceeds (in advance) define grid load-threshold, SGSN/MME is by the service request of refusal MD.Now SGSN/MME sends downlink data notification to S-GW and unsuccessfully indicates (as Downlink Data Notification Failure Indication) signaling, and wherein to indicate that service sets up be unsuccessfully because network is refused to provide due to transmission service to MD to cause parameter.Among this process, if being MD, 3GPP network system distributed the time delay stand-by period, SGSN/MME is by its preservation responsible maintenance so.If 3GPP network system is not distributed the time delay stand-by period for MD, SGSN/MME can arrange the indication of time delay wait state in MD context so, and its term of validity is set to the given acquiescence time delay stand-by period of system.

For example, if time delay stand-by period parameter or the time delay wait state safeguarded (change, grow out of nothing, from having to nothing, occur to upgrade etc.), SGSN/MME sends notice signaling (as Notify Request) notice HLR/HSS by S6a/S6d interface to HLR/HSS and upgrades time delay stand-by period parameter (as Delayed Time) or the time delay wait state indication information (as Delay State Indicator) being recorded.During transmission, SGSN/MME in notification message, increases time delay stand-by period parameter (as Delayed Time) or time delay wait state indicates (as Delay State Indicator) for carrying the up-to-date time delay wait state information of up-to-date time delay stand-by period of MD or MD.

In the technical program, to it, by aforesaid two kinds of methods, the behavior of HLR/HSS is two kinds of situations of existence of correspondence also:

Situation one, for the method for subscribing to, when receiving subscribing notification request (as the Subscribe-Notifications-Request) signaling of MTC Server transmission, HLR/HSS replys (as Subscribe-Notifications-Answer) signaling with subscribing notification and responds, and to monitor 3GPP network system be whether time delay stand-by period parameter or the MD time delay wait state that MD arranges is upgraded.

Situation two, for inquiry method, when receiving user data requests (as the User-Data-Request) signaling of MTC Server transmission, HLR/HSS replys (as User-Data-Answer) signaling with user data and responds, and by 3GPP network system, is that time delay stand-by period parameter value or the MD time delay wait state that MD arranges informed MTC Server by this signaling.

When receiving notice request (as the Notify Request) signaling of SGSN/MME transmission, time delay stand-by period parameter (as Delay Time) or the time delay wait state indication information (as Delay State Indicator) being recorded upgraded in the time delay stand-by period parameter information (as Delayed Time) that HLR/HSS carries according to this signaling or time delay wait state indication (as Delay State Indicator), and with notice, replys (as Notify Answer) signaling and respond.

After renewal, if MTC Server requires HLR/HSS to occur after changing it to be notified in time delay stand-by period parameter or time delay wait state by subscribing notification demand signalling, HLR/HSS be take and informed up-to-date time delay stand-by period or the up-to-date time delay wait state of MD that MTC Server3GPP network system arranges as MD to MTC Server transmission sending out notice request (as Push-Notification-Request) signaling by Sh interface so.

Here what deserves to be explained is: except make S-GW produce the unreachable ICMP/ICMPv6 control message of main frame unreachable to MTC Server notice object MD, also can make the principle of P-GW based on same produce the unreachable ICMP/ICMPv6 control message notice of main frame MTC Server object MD unreachable.But the latter requires system to take new informing mechanism between S-GW and P-GW so that P-GW to build the ICMP/ICMPv6 required necessary information of dividing into groups.

Below, in conjunction with concrete application scenarios, describe:

As shown in Figure 8, the schematic flow sheet of the MTC equipment downlink data transmission control method under a kind of concrete application scenarios proposing for the embodiment of the present invention, for MTC, subscribe to time delay stand-by period parameter information, and MD not the situation in time delay wait state describe.

In the present embodiment, MTC Server obtains from HSS the time delay stand-by period that network system MD arranges based on subscribing manner.

The CAMEL-Subscription-Information of step S801, core net management control entity and the mutual MD of HLR/HSS, wherein comprises the information of offered load threshold parameter.

Supposing that MD A has Time Tolerant characteristic, is that the Access Network load-threshold that MD A sets is 0.7 when signing, and, when Access Network load reaches 0.7 or 0.7 when above, network will be for MD A provide data transport service.Like this, HSS increases offered load threshold parameter (as Load Threshold) and its value is set to 0.7 in the CAMEL-Subscription-Information of MD A.In addition, HSS also increases time delay stand-by period parameter (as Delay Time) for recording the time delay stand-by period that 3GPP network is MD A distribution in the CAMEL-Subscription-Information of MD A.

When MD A initiation Attach process is attached to network, for providing the MME of service to read the CAMEL-Subscription-Information of MD A and increase load-threshold parameter information (as Load Threshold) the context of the MD of local maintenance A from HSS, MD A preserves signing load-threshold value 0.7.

Step S802, MD A carry out Login Register to MTC Server.

For the service of using MTC Server to provide, MD A carries out Login Register to MTC Server in Attach process or after Attach process.

Step S803, MTC Server subscribe to the time delay stand-by period parameter information of MD A to HLR/HSS.

MTC Server sends Subscribe Notifications Request signaling to 3GPP core net HSS under MD A, indicate therein require HSS 3GPP network system be MD A arrange the time delay stand-by period, parameter changed time it is notified.HSS responds with Subscribe Notifications Answer signaling.

Adhere to, after the initialization procedures such as Login Register are complete, MD A does not have transfer of data demand, returns to Idle state.

In step S804, MTC Server, there is sending to the downlink data of MD A.

At a time, as 19:00, MTC Server has business to produce need to carry out downlink data transmission to MD A.

Whether step S805, MTC Server judgement has started time delay waiting timer to MD A.

If started, direct this downlink data of buffer memory, etc. time delay waiting timer when overtime, then sends this downlink data, and for convenience of description, this kind of situation do not explain at this, and emphasis describes situation about being not activated.

Suppose that time delay waiting timer not yet starts, and performs step S806.

Step S806, MTC Server are directly sent to 3GGP core net P-GW by the IP packet of arrival.

Step S807, P-GW carry out protocol conversion and adaptation to these downstream IP packets that receive, and after completing GTP protocol encapsulation, are forwarded to S-GW.

Step S808, S-GW send downlink data notification to core net management control entity (follow-up directly take MME describe as example).

Because MD A is in Idle state, between S-GW and MD, does not exist the wireless access of having set up to be connected, so the downstream data packet that arrives of S-GW buffer memory, and to MME, send Downlink Data Notification signaling and impel MME to initiate paging to MD A.

Step S809, MME judge that whether MD A is in time delay wait state.

While receiving the Downlink Data Notification signaling of S-GW transmission, first MME checks the time delay stand-by period parameter (as Delayed Time) of safeguarding in MD A context, judges that whether MD is in time delay wait state.

If so, directly perform step S813, this kind of situation explanation no longer separately;

If not, perform step S810 and step S811, wherein, between step S810 and step S811, there is no inevitable precedence relationship, the existence of sequence number is just for convenience.

Step S810, MME reply to S-GW feeding back downlink data notification, represent to accept downlink data request.

Suppose that MME not yet safeguards time delay stand-by period parameter (if, Delayed Time value is empty), MME will respond S-GW with Downlink Data Notification Acknowledge signaling so, show that request is accepted.

Step S811, MME initiate paging to MD A in the tracing area of MD A registration.

Step S812, MD A set up wireless access to MME request and connect.

After receiving the call signaling of network side, MD A sends NAS signaling Service Request to MME, and request is set up wireless access and connected.After this, network and terminal MD A process service request procedure according to existing technical scheme.

If current Access Network load is 0.5, be less than Load Threshold value 0.7, show that access network present load is within the load-threshold allowed band of MD A, can provide service for MD A, when service request procedure is disposed, network is set up the most at last wireless access and is connected permission downlink data transmission so.If current Access Network load is 0.8, be greater than Load Threshold value 0.7, show that Access Network present load exceeds the signing load-threshold of MD A, network is refused the service request of MD A the most at last so, and is that MD A distributes a time delay stand-by period parameter (as 19:30) to require MD A to postpone after 30 minutes request service again according to offered load situation.

The present embodiment is specifically described as follows for latter event.

Step S813, MME send downlink data to S-GW and unsuccessfully indicate.

MME returns to Downlink Data Notification Failure Indication signaling to S-GW, and wherein to indicate that service sets up be unsuccessfully because network is refused to provide due to transmission service to MD to cause parameter.

It is the time delay stand-by period 19:30 that MD A distributes that MME preserves network system in MD A context Delayed Time parameter.

While receiving Downlink Data Notification Failure Indication signaling, S-GW is discarded as the downstream data packet of MD A buffer memory and to MTC Server, sends ICMP control message notice MTC Server terminal MD A by P-GW unreachable.

Meanwhile, when carrying out this step, further perform step S814.

The new time delay stand-by period parameter of step S814, MME notice HLR/HSS.

Because safeguarded time delay waits for that parameter changes, MME sends Notify Request signaling HSS by S6a interface to HSS recorded time delay stand-by period parameter is updated to 19:30.HSS responds with Notify Answer signaling.Upgrade complete after, it is that the delay stand-by period 19:30 that MD A sets informs MTC Server by network that HSS sends Push Notification Request signaling.

When receiving the Push-Notification-Request signaling that HSS sends, MTC Server therefrom extracts the time delay stand-by period parameter the local time delay waiting timer that carry and is set to 19:30 and starts.Meanwhile, MTC Server responds HSS with Push Notification Answer signaling.

At timer expiry (19:30 arrival) before, if there is packet to arrive, the downstream IP packet that MTC Server buffer memory arrives time-out send data by 3GPP network to MD A.After treating timer expiry, MTC Server can send data to 3GPP core net P-GW, and then again triggers service request.

As shown in Figure 9, the schematic flow sheet of the MTC equipment downlink data transmission control method under a kind of concrete application scenarios proposing for the embodiment of the present invention, for MTC, subscribe to time delay stand-by period parameter information, and MD the situation in time delay wait state describe.

For the application scenarios identical with the embodiment shown in Fig. 8, step S901 is consistent to step S803 with step S801 to step S903.

After MD A completes Login Register, MTC Server sends subscribe request by Subscribe-Notifications-Request signaling to 3GPP core net HSS under MD A, require HSS 3GPP network system be MD A arrange the time delay stand-by period, parameter changed time it is notified.HSS responds with Subscribe-Notifications-Answer signaling.

In step S904, MD A, there is needing the upstream data of transmission.

At a time, as 19:00, MD A has business datum to arrive and to network initiated service request.

Step S905, MD A set up wireless access to MME request and connect.

Now, if Access Network load is 0.8, be greater than Load Threshold value 0.7, the service request that network will refusal MDA, and require MD A to postpone 30 minutes request services again afterwards for MD A distributes a time delay stand-by period parameter (as 19:30).MME is updated to 19:30 the time delay stand-by period that MD A distributes.

The new time delay stand-by period parameter of step S906, MME notice HLR/HSS.

Because safeguarded time delay waits for that parameter changes, MME sends Notify Request signaling HSS by S6a interface to HSS recorded time delay stand-by period parameter is updated to 19:30.HSS responds with Notify Answer signaling.

Upgrade complete after, it is that the delay stand-by period 19:30 that MD A sets informs MTC Server by network that HSS sends Push-Notification-Request signaling.

When receiving the Push-Notification-Request signaling that HSS sends, MTC Server therefrom extracts the time delay stand-by period parameter the local time delay waiting timer that carry and is set to 19:30 and starts.Meanwhile, MTC Server responds HSS with Push-Notification-Answer signaling.

Owing to having started time delay waiting timer, therefore at timer expiry (19:30 arrival) before, if there is packet to arrive, the downstream IP packet that MTC Server buffer memory arrives time-out send data by 3GPP network to MD A.After treating timer expiry, MTC Server can send data to 3GPP core net P-GW, and then again triggers service request.

As shown in figure 10, the schematic flow sheet of the MTC equipment downlink data transmission control method under a kind of concrete application scenarios proposing for the embodiment of the present invention, for MTC inquiry time delay stand-by period parameter information, and MD not the situation in time delay wait state describe.

In the present embodiment, MTC Server obtains from HSS the time delay stand-by period that network system MD arranges based on inquiry mode.

The CAMEL-Subscription-Information of step S1001, core net management control entity and the mutual MD of HLR/HSS, wherein comprises the information of offered load threshold parameter.

Step S1002, MD A carry out Login Register to MTC Server.

In step S1003, MTC Server, there is sending to the downlink data of MD A.

Whether step S1004, MTC Server judgement has started time delay waiting timer to MD A.

Suppose that time delay waiting timer not yet starts, and performs step S1005.

Step S1005, MTC Server are directly sent to 3GGP core net P-GW by the IP packet of arrival.

Step S1006, P-GW carry out protocol conversion and adaptation to these downstream IP packets that receive, and after completing GTP protocol encapsulation, are forwarded to S-GW.

Step S1007, S-GW send downlink data notification to core net management control entity (follow-up directly take MME describe as example).

Step S1008, MME judge that whether MD A is in time delay wait state.

If so, directly perform step S1012, this kind of situation explanation no longer separately;

If not, perform step S1009 and step S1010, wherein, between step S1009 and step S1010, there is no inevitable precedence relationship, the existence of sequence number is just for convenience.

Step S1009, MME reply to S-GW feeding back downlink data notification, represent to accept downlink data request.

Step S1010, MME initiate paging to MD A in the tracing area of MD A registration.

Step S1011, MD A set up wireless access to MME request and connect.

The present embodiment is specifically described as follows for latter event.

Step S1012, MME send downlink data to S-GW and unsuccessfully indicate.

Meanwhile, when carrying out this step, further perform step S1013.

The new time delay stand-by period parameter of step S1013, MME notice HLR/HSS.

Step S1014, MTC Server are to the time delay stand-by period parameter information of HLR/HSS inquiry MD A.

What receive S-GW transmission informs that when the inaccessible ICMP of terminal MD A divides into groups, MTC Server sends User-Data-Request signaling to HSS, requires HSS that the time delay stand-by period parameter information of the MD A of current record is provided.HSS is that the delay stand-by period 19:30 that MD A sets informs MTC Server by User-Data-Answer signaling by network.

After receiving the User-Data-Answer signaling that HSS returns, MTC Server therefrom extracts the time delay stand-by period parameter the local time delay waiting timer that carry and is set to 19:30 and starts.

As shown in figure 11, the schematic flow sheet of the MTC equipment downlink data transmission control method under a kind of concrete application scenarios proposing for the embodiment of the present invention, for MTC, subscribe to time delay stand-by period parameter information, and MD not the situation in time delay wait state describe.

For the application scenarios identical with the embodiment shown in Figure 10, step S1101 is consistent to step S1002 with step S1001 to step S1102.

In step S1103, MD A, there is needing the upstream data of transmission.

Step S1104, MD A set up wireless access to MME request and connect.

Now, if Access Network load is 0.8, be greater than Load Threshold value 0.7, the service request that network will refusal MD A, and require MD A to postpone 30 minutes request services again afterwards for MD A distributes a time delay stand-by period parameter (as 19:30).MME is updated to 19:30 the time delay stand-by period that MD A distributes.

The new time delay stand-by period parameter of step S1105, MME notice HLR/HSS.

In step S1106, MTC Server, there is sending to the downlink data of MD A.

Whether step S1107, MTC Server judgement has started time delay waiting timer to MD A.

Suppose that time delay waiting timer not yet starts, and performs step S1108.

Step S1108, MTC Server are directly sent to 3GGP core net P-GW by the IP packet of arrival.

Step S1109, P-GW carry out protocol conversion and adaptation to these downstream IP packets that receive, and after completing GTP protocol encapsulation, are forwarded to S-GW.

Step S1110, S-GW send downlink data notification to core net management control entity (follow-up directly take MME describe as example).

Step S1111, MME judge that whether MD A is in time delay wait state.

As front, the waiting period that the Delayed Time parameter value in MD A context showing that current MD A is in time delay, MD A is current in time delay wait state, so further processing procedure is as follows:

Step S1112, MME send downlink data to S-GW and unsuccessfully indicate.

MME returns to the notice request of Downlink Data Notification Acknowledge signaling refusal S-GW to S-GW, wherein cause parameter indicates MD A owing to being caused paging operation to fail to carry out by network system restriction service.

While receiving Downlink Data Notification Acknowledge signaling, S-GW is discarded as the downstream data packet of MD A buffer memory and to MTC Server, sends ICMP control message notice MTC Server terminal MD A by P-GW unreachable.

Step S1113, MTC Server are to the time delay stand-by period parameter information of HLR/HSS inquiry MD A

Compared with prior art, the present invention has the following advantages:

The technical scheme proposing by the application embodiment of the present invention, solved the transmission control problem with the data service of time tolerance characteristic MD down direction, on the basis of existing transmitting uplink data control program, by further enhancing MTC Server and each inter-entity of core net, the reciprocal process of inner each inter-entity of core net, make signing threshold constraints MTCServer that system can be based on Access Network loading condition and (in advance) definition to the transmission of MD downlink data, thereby there is the ability of supporting that downlink data transmission is controlled.

In order to realize above-mentioned technical scheme proposed by the invention, the present invention also provides a kind of MTC server, and its structural representation as shown in figure 12, comprising:

Timer module 121, for setting the time delay waiting timer of the MTC equipment of corresponding current registration;

Judge module 122, for when needs are during to MTC device transmission downlink data, judges whether timer module 121 has started the time delay waiting timer of corresponding MTC equipment;

Cache module 123, for when judge module 122 judgements have started the time delay waiting timer of corresponding MTC equipment, buffer memory downlink data;

Communication module 124, when overtime for the time delay waiting timer of the corresponding MTC equipment that sets when timer module 121, sends to corresponding MTC equipment by the downlink data of 123 buffer memorys of cache module by network.

Wherein, timer module 121, for setting the time delay waiting timer of the MTC equipment of corresponding current registration, is specially:

Time delay stand-by period parameter or the MTC equipment delay wait state information of the MTC equipment that timer module 121 gets from HLR or HSS according to communication module 124 are set, wherein, communication module 124 is obtained the time delay stand-by period parameter of MTC equipment or the mode of MTC equipment delay wait state information from HLR or HSS, specifically comprises:

Communication module 124 is receiving the logging in after registration request of MTC equipment, to HLR or HSS, subscribe to the time delay stand-by period parameter of MTC equipment or the time delay wait state information of MTC equipment, when the time delay stand-by period parameter of HLR or HSS judgement MTC equipment or time delay wait state change, communication module 124 receives time delay stand-by period parameter or the time delay wait state information of the MTC equipment of the renewal that HLR or HSS send; Or,

When communication module 124 receives the notification message to the failure of MTC device transmission downlink data of service data gateway transmission, communication module 124 sends the time delay stand-by period parameter of MTC equipment or the inquiry request of time delay wait state information to HLR or HSS, and receives time delay stand-by period parameter or the time delay wait state information of the MTC equipment that HLR or HSS return.

In concrete application scenarios, when communication module 124 receives the notification message of the time delay stand-by period parameter about MTC equipment that HLR or HSS send, timer module 121 is according to the time delay waiting timer of the corresponding MTC equipment of time delay stand-by period setting parameter of MTC equipment;

When communication module 124 receives the notification message of the time delay wait state information about MTC equipment that HLR or HSS send, if MTC equipment is in time delay wait state, timer module 121 is according to the time delay waiting timer of the corresponding MTC equipment of time delay stand-by period setting parameter of systemic presupposition.

The aforesaid notification message to the failure of MTC device transmission downlink data, is specially:

Characterize the inaccessible ICMP message of destination node; Or,

Characterize the inaccessible ICMPv6 message of destination node.

In concrete application scenarios, the technical scheme that the embodiment of the present invention proposes also comprises:

If judge module 122 judgements are not activated the time delay waiting timer of corresponding MTC equipment, communication module 124 need to send to the downlink data of MTC device transmission the corresponding network equipment, and need to be transmitted to the downlink data of MTC device transmission MTC equipment by the corresponding network equipment.

Compared with prior art, the present invention has the following advantages:

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, and the mode that also can add necessary general hardware platform by software realizes.Understanding based on such, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, service end, or the network equipment etc.) carry out the present invention each implement the method described in scene.

It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram of preferably implementing scene, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device of implementing in scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.

The invention described above sequence number, just to describing, does not represent the quality of implementing scene.

Disclosed is above only several concrete enforcement scene of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims

1. a machine type communication MTC equipment downlink data transmission control method, is characterized in that, comprising:

When the time delay waiting timer of the described MTC equipment of described correspondence is overtime, described MTC server sends to corresponding MTC equipment by the described downlink data of buffer memory by network;

Wherein, the time delay waiting timer of the described MTC equipment of described correspondence, is specially that described MTC server sets according to the time delay stand-by period parameter of the described MTC equipment getting from HLR or HSS or described MTC equipment delay wait state information;

Described MTC server obtains the time delay stand-by period parameter of described MTC equipment or the mode of described MTC equipment delay wait state information from HLR or HSS, specifically comprises:

Described MTC server is receiving the logging in after registration request of described MTC equipment, described MTC server is subscribed to the time delay stand-by period parameter of described MTC equipment or the time delay wait state information of described MTC equipment to HLR or HSS, when described HLR or HSS judge that the time delay stand-by period parameter of described MTC equipment or time delay wait state change, described MTC server receives the time delay stand-by period parameter of described MTC equipment or the time delay wait state information of described MTC equipment of the renewal that described HLR or HSS send; Or,

When described MTC server receives the notification message to the failure of described MTC device transmission downlink data of service data gateway transmission, described MTC server sends the inquiry request of the time delay stand-by period parameter of described MTC equipment or the time delay wait state information of described MTC equipment to described HLR or HSS, and receives the time delay stand-by period parameter of described MTC equipment or the time delay wait state information of described MTC equipment that described HLR or HSS return.

2. the method for claim 1, is characterized in that, described MTC server receives the time delay stand-by period parameter of described MTC equipment or the time delay wait state information of described MTC equipment of the renewal of described HLR or HSS transmission, specifically comprises:

Described MTC server receives the notification message of the time delay stand-by period parameter about described MTC equipment of described HLR or HSS transmission, and described MTC server is according to the time delay waiting timer of the corresponding described MTC equipment of time delay stand-by period setting parameter of described MTC equipment; Or,

Described MTC server receives the notification message of the time delay wait state information about described MTC equipment of described HLR or HSS transmission, if described MTC equipment is in time delay wait state, described MTC server is according to the time delay waiting timer of the default corresponding described MTC equipment of time delay stand-by period setting parameter.

3. the method for claim 1, is characterized in that, when MTC server need to be to MTC device transmission downlink data, described MTC server also comprises after having judged whether to start the time delay waiting timer of corresponding described MTC equipment:

If be not activated the time delay waiting timer of corresponding described MTC equipment, described MTC server need to send to the downlink data of MTC device transmission the corresponding network equipment by described, and by described, need to be transmitted to the downlink data of MTC device transmission described MTC equipment by the corresponding network equipment.

4. method as claimed in claim 3, is characterized in that, the corresponding network equipment need to be transmitted in the process of described MTC equipment to the downlink data of MTC device transmission described, also comprises:

When described MTC equipment is current can not reach the condition of downlink data receiving time, the corresponding core net controlled entity of described MTC equipment is determined described downlink data transmission failure, and generates the time delay stand-by period parameter of the described MTC equipment upgrading;

The corresponding core net controlled entity of described MTC equipment sends the time delay stand-by period parameter of the described MTC equipment of described renewal to described HLR or HSS;

The corresponding core net controlled entity of described MTC equipment sends the notification message to the failure of described MTC device transmission downlink data by service data gateway to described MTC server, downlink data described in described MTC server buffer.

5. the method as described in claim 1 or 4, is characterized in that, the notification message to the failure of described MTC device transmission downlink data, is specially:

Characterize the inaccessible ICMP message of destination node.

6. the method for claim 1, is characterized in that, also comprises:

When described MTC equipment is current can not reach the condition that sends upstream data time, the corresponding core net controlled entity of described MTC equipment is determined described transmitting uplink data failure, and generates the time delay stand-by period parameter of the described MTC equipment upgrading;

The corresponding core net controlled entity of described MTC equipment sends the time delay stand-by period parameter of the described MTC equipment of described renewal to described HLR or HSS.

7. a machine type communication MTC server, is characterized in that, comprising:

Communication module, when overtime for the time delay waiting timer of the described MTC equipment of correspondence that sets when described timer module, sends to corresponding MTC equipment by the described downlink data of described cache module institute buffer memory by network;

Wherein, described timer module, for setting the time delay waiting timer of the MTC equipment of corresponding current registration, is specially:

Time delay stand-by period parameter or the described MTC equipment delay wait state information of the described MTC equipment that described timer module gets from HLR or HSS according to described communication module are set;

Described communication module is obtained the time delay stand-by period parameter of described MTC equipment or the mode of described MTC equipment delay wait state information from HLR or HSS, specifically comprises:

Described communication module is receiving the logging in after registration request of described MTC equipment, time delay stand-by period parameter or the described MTC equipment delay wait state information of to HLR or HSS, subscribing to described MTC equipment, when described HLR or HSS judge that the time delay stand-by period parameter of described MTC equipment or time delay wait state change, described communication module receives time delay stand-by period parameter or the described MTC equipment delay wait state information of the described MTC equipment of the renewal that described HLR or HSS send; Or,

When described communication module receives the notification message to the failure of described MTC device transmission downlink data of service data gateway transmission, described communication module sends the time delay stand-by period parameter of described MTC equipment or the inquiry request of described MTC equipment delay wait state information to described HLR or HSS, and receives time delay stand-by period parameter or the described MTC equipment delay wait state information of the described MTC equipment that described HLR or HSS return.

8. MTC server as claimed in claim 7, is characterized in that,

When described communication module receives the notification message of the time delay stand-by period parameter about described MTC equipment that described HLR or HSS send, described timer module is according to the time delay waiting timer of the corresponding described MTC equipment of time delay stand-by period setting parameter of described MTC equipment; Or,

When described communication module receives the notification message of the time delay wait state information about described MTC equipment that described HLR or HSS send, if described MTC equipment is in time delay wait state, described timer module is according to the time delay waiting timer of the default corresponding described MTC equipment of time delay stand-by period setting parameter.

9. MTC server as claimed in claim 7, is characterized in that, the notification message to the failure of described MTC device transmission downlink data, is specially:

Characterize the inaccessible ICMP message of destination node.

10. MTC server as claimed in claim 7, is characterized in that, also comprises:

If described judge module judgement is not activated the time delay waiting timer of corresponding described MTC equipment, described communication module need to send to the downlink data of MTC device transmission the corresponding network equipment by described, and by described, need to be transmitted to the downlink data of MTC device transmission described MTC equipment by the corresponding network equipment.