WO2011094954A1 - Procédé et dispositif de transmission de données dans un système de communication de machine à machine - Google Patents

Procédé et dispositif de transmission de données dans un système de communication de machine à machine Download PDF

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Publication number
WO2011094954A1
WO2011094954A1 PCT/CN2010/070564 CN2010070564W WO2011094954A1 WO 2011094954 A1 WO2011094954 A1 WO 2011094954A1 CN 2010070564 W CN2010070564 W CN 2010070564W WO 2011094954 A1 WO2011094954 A1 WO 2011094954A1
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WIPO (PCT)
Prior art keywords
mtc
data
signaling
user plane
user
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PCT/CN2010/070564
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English (en)
Chinese (zh)
Inventor
雷正雄
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上海贝尔股份有限公司
阿尔卡特朗讯公司
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Application filed by 上海贝尔股份有限公司, 阿尔卡特朗讯公司 filed Critical 上海贝尔股份有限公司
Priority to CN201080055438.XA priority Critical patent/CN102652412B/zh
Priority to PCT/CN2010/070564 priority patent/WO2011094954A1/fr
Publication of WO2011094954A1 publication Critical patent/WO2011094954A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • the present invention relates to communication networks and, in particular, to Internet of Things communication. Background technique
  • “Sensor Network” is known internationally as “Internet of Things” (IOT), which connects all items to the Internet through information sensing devices such as radio frequency identification, and exchanges information and communication for intelligent identification.
  • IOT Internet of Things
  • the Internet of Things is widely used in various fields such as energy, finance and insurance, environmental protection, government work, public safety, safe home, intelligent fire protection, industrial monitoring, elderly care, and personal health. It is estimated that by 2020, the ratio of global physical interconnection business to existing personal interconnection business will reach 30:1. Therefore, "Internet of Things, will become the next trillion-level communication business.
  • the client side of the Internet of Things extends and extends between any item and item for information exchange and communication. This will involve data communication between machines without human interaction, ie machine type communication
  • MTC machine-to-machine
  • M2M machine-to-machine
  • FIG. 1 shows a 3GPP service model for machine type communication.
  • the 3GPP network can provide transport and communication services optimized for machine type communications.
  • an end-to-end application between the MTC device 101 and the MTC server 105 or other MTC device can use 3GPP bearer services, SMS and IMS, etc., provided by the 3GPP network.
  • the 3GPP network can use, for example, GSM (Global System for Mobile Communications), GPRS (General Packet Radio Service), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division Synchronous Code Division Multiple Access), etc.
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • the MTC device 101 is a user equipment for machine type communication that can communicate with the MTC server 105 or other MTC device over a PLMN (Public Land Mobile Network) such as a 3GPP network.
  • PLMN Public Land Mobile Network
  • MTC device 101 can communicate with other entities locally (wirelessly, via PAN or hardware) to obtain data for processing and communicating with MTC server 105 or other MTC devices.
  • the interface on the MTCu reference point provides access to the 3GPP network by the MTC device 101 for supporting the transmission of user plane and control plane traffic.
  • the MTC device 101 can be connected via an MTCu reference point, for example, UTRAN (UMTS Terrestrial Radio Access Network), E-UTRAN (Evolved UMTS Terrestrial Radio Access Network), GERAN (GSM/EDGE Radio Access Network), I- WLAN (Connected Wireless LAN) and more.
  • UTRAN UMTS Terrestrial Radio Access Network
  • E-UTRAN Evolved UMTS Terrestrial Radio Access Network
  • GERAN GSM/EDGE Radio Access Network
  • I- WLAN Connected Wireless LAN
  • the MTCu reference point can be based on Uu, Um, Ww, and LTE-Uu interfaces.
  • the MTC server 105 is an entity that performs services for MTC users.
  • the MTC server 105 can communicate with the PLMN itself and with the MTC device 101 via the PLMN.
  • the MTC server 105 can also have an interface that can be accessed by MTC users.
  • the MTC user can have one or more MTC servers 105 in communication with the user's MTC device.
  • the MTC server 105 is connected to the 3GPP network via an interface on the MTCi or MTCsms reference point. Through the MTCi reference point, the MTC server 105 can communicate with the 3GPP network and communicate with the MTC device via the 3GPP bearer or IMS.
  • the MTCi may be based on the Gi, SGi and Wi interfaces, which are the MTC servers used to communicate with the 3GPP network and communicate with the MTC device via the SMS reference point.
  • the MTC communication mechanism needs a lot compared to the mature human-to-human communication mechanism. Improve, optimize and improve. At present, the business needs of MTC are being further improved, and the optimization of MTC network architecture and the improvement of key technologies are just beginning. As described in the 3GPP specification TR 23.888 V0.2.1 ("System Improvements for Machine Type Communication"), the network will be improved for the MTC requirements specified in TS 22.368. However, there are no detailed solutions/mechanisms, or some solutions are mentioned briefly, but the scheme has a poor effect.
  • the MTC device using small data is described in TS23.888 V0.2.1 via SMS (Short Message) or SG (Short Message) via SGSN (Serving GPRS Support Node) / MSC (Mobile Switching Center) Gateway) uses SMS to send or receive data.
  • the MTC server operates with SM-SC (Short Message Service Center) or as SM-SC to transmit or receive MTC service data encapsulated in short messages.
  • MTC devices may also apply online small data transmission and time control features.
  • the MTC device is equipped with a high definition display that is outside the mall and is configured to download data for advertising every morning and upload a surveillance video after midnight. Outside of these specific time periods, it is not allowed to send or receive data.
  • the MTC device when the time control feature is applied, the MTC device is connected to the network for data transmission within a predetermined time period, and the MTC device is disconnected from the network outside the predetermined time period, which also causes the network to not quickly update the state of the MTC device.
  • the prior art does not have a relatively economical solution for applying the above two MTC features at the same time. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a method and apparatus to overcome at least one of the above drawbacks.
  • a method for data transmission in a machine-to-machine communication system wherein the machine-to-machine communication system includes a plurality of machine type communication
  • At least one of the MTC devices and the MTC server including:
  • an MTC device comprising: a transmitting/receiving device for transmitting and/or receiving signaling and/or data; and processing means for creating signaling for transmission or The received signaling is processed to transmit user data to the MTC server via the communication network, wherein the created signaling indicates the MTC service type and carries the user data, and the control plane of the communication network is separated from the user plane.
  • a mobility management unit including:
  • a transmitting/receiving device for transmitting and/or receiving signaling and/or data
  • a user plane device including:
  • a transmitting/receiving device for transmitting and/or receiving signaling and/or data
  • Fig. 1 exemplarily shows a 3GPP service model for machine type communication in the prior art
  • Fig. 1 exemplarily shows a flow chart for data transmission in a machine-to-machine communication system according to an embodiment of the present invention. Signaling diagram.
  • FIG. 4 illustrates a signaling diagram of a system deleting a user plane and maintaining a control plane outside of a predetermined time period, in accordance with an embodiment of the present invention.
  • FIG. 5 illustrates a tracking area update process outside a predetermined period of time according to an embodiment of the present invention.
  • Figure 6 illustrates a process of reconstructing a user plane when re-established within a predetermined time period, in accordance with an embodiment of the present invention.
  • FIG. 7 illustrates a service request process outside a predetermined time period according to an embodiment of the present invention.
  • FIG. 8 shows a schematic structural block diagram of an MTC device according to an embodiment of the present invention.
  • FIG. 9 illustrates a schematic block diagram of a mobility management unit according to an embodiment of the present invention.
  • FIG. 10 illustrates a schematic block diagram of a user plane device in accordance with an embodiment of the present invention. detailed description
  • a general idea of a method for data transmission in a machine-to-machine communication system of an embodiment of the present invention is that the machine-to-machine communication system includes at least one of a plurality of machine type communication MTC devices and an MTC server through which the MTC is passed.
  • the device and the MTC server transmit signaling via the communication network to transmit a certain amount of user data, the signaling indicating the MTC service type and carrying the user data, and the control plane of the communication network is separated from the user plane.
  • the service type may be an MTC online small data transmission, and the system or the network or the MTC device determines that the data amount is less than a certain threshold, and the user data is For small data.
  • the communication network may comprise a GPRS or EPS (Evolved Packet System, also referred to as EPC) network.
  • EPS Evolved Packet System
  • the principle of data transmission in the MTC system of the embodiment of the present invention will be described mainly by taking the EPS network and the uplink as an example, but those skilled in the art should understand The downlink will perform similar or relative operations, and embodiments of the present invention are not limited thereto.
  • FIG. 1 exemplarily shows a flow chart for data transmission in a machine-to-machine communication system in accordance with an embodiment of the present invention.
  • the MTC system includes at least one of a plurality of machine type communication MTC devices and an MTC server.
  • step S210 signaling is sent from the MTC device to the MTC server via a base station, a mobility management unit, and a user plane device of the communication network to transmit user data of a certain data amount, where The signaling indicates the MTC service type and carries the data.
  • a user plane device refers to a device for a user plane to control bearer resources to transmit user data and control operations (eg, create, delete, update sessions) that carry resources, such as a serving gateway and a PDN (grouping in an EPC (Evolved Packet Core) network) Data network) Gateway, GPRS (General Packet Radio Service)
  • the user plane logic part of the SGSN (Serving GPRS Support Node) in the network and the GGSN (GPRS Gateway Support Node).
  • the mobility management unit may include a mobility management control part in the MME (Mobility Management Entity) or the SGSN.
  • the MTC device may transmit the data by transmitting signaling in sequence via a base station, a mobility management unit, and a user plane device.
  • the service type may be an MTC online small data transmission, and the data may be small data if the data volume is less than a certain threshold by the MTC device or the system or the network. Signaling diagram.
  • online small data transmission or other features such as time control are important features of the MTC system.
  • the HSS Home Subscriber Server
  • the MME stores these data in the context of the MTC device.
  • the context can include the MTC setting Regular data and online small data transmission features or time control features.
  • a predetermined time period in which the MTC can transmit/receive data in the time control feature is also included.
  • the attachment process of the MTC device is similar to the normal attachment process of the EPS user device.
  • Small data can be sent or received at any time that meets the trigger condition.
  • each time small data is transmitted a large number of signaling messages are exchanged to create a bearer resource of the user plane to transmit small data by using a user plane. Since the small data is small, the number of these signaling messages is small. And the size is very large compared to the size of the data to be transmitted; and any time it is necessary to send and receive small data, each time you send and receive small data may need to re-interact these signaling messages, which will bring a lot of network The burden on signaling processing. Therefore, it is not enough to use the EPS bearer (such as EPS user plane) to send MTC small data, and it is more efficient to use signaling messages to transmit MTC small data.
  • EPS bearer such as EPS user plane
  • step S340 when the trigger condition is met and the MTC small data is to be transmitted, the MTC device 10 transmits signaling to the MME 30 through the eNB 20 to transmit a certain amount of data.
  • the signaling may carry at least one of the following: an MTC service type, an ID of the MTC device, an IP address of the MTC server, and the data.
  • the signaling may employ an uplink universal NAS message.
  • Table 1 shows the structure of the message in the prior art.
  • the uplink general-purpose NAS message may be enhanced as follows:
  • the general message container type information element is expanded to represent the MTC service type, and the universal message container information element carries the data to be transmitted.
  • the small data to be transmitted may include users other than The unique ID of the MTC device outside the data and the IP address of the corresponding MTC server.
  • the general message container information unit carries the ID of the MTC device and the IP address of the MTC server in addition to the MTC small data.
  • the unique D of the MTC device and the IP address of the corresponding MTC server can also be carried in the message header.
  • the MTC service type may be online small data transmission, and the small data may be defined in the network or system or the MTC device as data having a data amount less than a certain threshold.
  • This type of business can be represented by a specific character or number.
  • the MME upon receiving the signaling, the MME will check the traffic type and extract the data to be transmitted and send signaling to the serving gateway SWG 40 to transmit the data.
  • an uplink universal NAS transmission message may be adopted, and the MME 30 checks the general message container type information element IE of the message and finds that it is an MTC online small data message container, and the MME will use the general message container.
  • the MTC small data is extracted in the IE and new signaling such as a data transmission request message is transmitted to the serving gateway SGW 40 to transmit the small data.
  • the data transfer request message may be implemented in the form of a GTP-C message.
  • an existing GTP-C message consists of a message header and one or more messages (one or more IEs) (see Table 2).
  • the message header consists of the parameters shown in the table, including the message type.
  • the message type of the GTP-C message is fixed. Each message type is assigned a tens digit, and some numbers are reserved for later use.
  • Tunnel endpoint identifier (first byte)
  • Tunnel endpoint identifier (second byte)
  • Tunnel endpoint identifier (third byte)
  • the GTP-C message can be allocated from these later usage numbers, for example, the number of its message type indicates a "data transmission request" having MTC small data.
  • the small data to be transmitted can be placed in the message body of the data transmission request message (for example, 0 or more information units in m+1 to n bytes of Table 2) for data transmission.
  • the serving gateway SWG 40 receives the signaling and forwards the small data to the packet data network (PDN) gateway 50 by signaling.
  • PDN packet data network
  • the SWG 40 changes the tunnel identifier (the tunnel identifier of the SWG) in the received data transmission request message to the tunnel identifier of the PDN gateway, and sends the MTC small data to the PDN gateway.
  • GTP-C message "Data Transfer Request”.
  • the signaling establishes a control plane channel between the mobility management unit and the user plane device and the user plane device to transfer data from the MTC device to the MTC server.
  • the control plane channel includes a GTP-C (in EPC system) tunnel or a GTP (in GPRS system) tunnel, while the GTP tunnel indicates use by signaling.
  • step S370 upon receiving the signaling, the PDN gateway 50 extracts the MTC small data and transmits the data to the corresponding MTC server according to the IP address of the MTC server 60 in the signaling.
  • a data transmission request is used between the user plane device and the MTC small data transmission.
  • the above steps are for the MTC device to be in a working state. If the MTC device is idle, the above steps will be modified, for example, still in the step.
  • the MTC device 10 sends signaling to the MME 30 through the eNB 20 to establish a signaling connection of the wireless side.
  • the above functions may be implemented using extensions to existing signaling, such as service request messages.
  • the service type IE in the existing service request message can be set to a specific value to indicate a small data transmission, which indicates that the signaling connection is established for small data transmission.
  • the signaling is only used to establish a signaling connection, and the existing service request message is used to establish a signaling connection and user plane resource allocation.
  • the MME Upon receiving the extended service request message, the MME checks the context of the service type information element and the MTC device. If the MME finds that this is a message indicating "MTC Small Data Transmission" and the MTC Small Data Transmission Feature is included in the context of the MTC device, the MME will not activate any wireless or S1 bearers for all activated EPS bearers, this is in contrast to conventional services. The request process is different.
  • step S330 the NAS authentication process may also be performed as needed.
  • the principle of implementing the above functions in the GPRS system is similar, and the small data transmission is performed by using signaling, and details are not described herein again.
  • the service request signaling may be adopted (the service type parameter is set therein). It is signalling or expressed as the value of the signaling) to create a NAS signaling transport channel from the MTC device to the SGSN.
  • the process of transmitting small data is similar to that of Figure 3.
  • the MTC device can first utilize a certain signaling (since there is no uplink general NAS transmission for GPRS).
  • the SGSN can transmit the small data through the new GTP-C message: Data transmission request message to GGSN, after which the GGSN transmits the small data to the external MTC server.
  • the small data transmission of the EPS system is from the MTC device to the MME, to the SGW and then to the PGW.
  • the small data transmission of GPRS is from MTC equipment to SGSN to GGSN.
  • the network element SGSN may logically include a mobility management part and a user plane equipment part. When receiving signaling of transmitting small data from the MTC device, it may directly send signaling to the GGSN to transmit small data, which is equivalent to mobility. A signaling is saved between the management part and the user plane device.
  • the configuration default may be adopted in the embodiment of the present invention.
  • the GGSN approach allows the SGSN to know which GGSN the small data should be transmitted to via the GTP-C message.
  • the downlink small data transmission corresponds to the uplink data transmission.
  • the MTC server when the MTC server sends small data to a certain MTC device, it may be in a certain message information unit in its signaling.
  • the small data is carried in, and the ID or address of the MTC device is also carried, so that the PDN gateway allocates the J! service gateway or the GGSN to find the corresponding SGSN.
  • similar settings can be made using similar signaling to implement data transmission for the downlink.
  • a corresponding downlink NAS transport message may also be used to carry the service type and the small data to be transmitted.
  • the online small data transmission may also be applied to other MTC features such as an MTC monitoring scenario to the MTC server (here, the MTC monitoring server). Transfer monitoring data (also small data).
  • a time control feature in the case of applying an online small data transmission feature, can also be applied.
  • the MTC device can transmit and receive normal user data (different from small data) through the user plane, and reject the transmission and reception of data through the user plane outside the predetermined time period.
  • the operation of the embodiment of the present invention may be different for different time periods.
  • the user plane and the control plane can be maintained at the same time, and the normal data is transmitted and received through the user plane, and the operation is the same as the conventional operation, and the small data can be sent and received through the control plane;
  • the control plane releases the resources of the user plane.
  • FIG. 4 illustrates a signaling diagram of a system deleting a user plane and maintaining a control plane outside of a predetermined time period, in accordance with an embodiment of the present invention.
  • the basic idea of an embodiment of the present invention is to delete the user plane but maintain the control plane when outside the predetermined period, so that in-line small data transmission can still be performed at any time.
  • Embodiments of the present invention are still described herein by way of an EPS system and an uplink.
  • the MTC device should only use the user plane to send or receive user data for a specific predetermined time period, and cannot transmit or receive data using the user plane outside of these predetermined time periods.
  • the network should set up/activate the EPS bearer for the MTC to send/receive normal data.
  • a user plane data transmission channel is established between the MTC device and the user plane device to transfer data from the MTC device to the MTC server.
  • the user plane data transmission channel may include a GTP-U tunnel or a GTP tunnel applied to the GPRS system, and the GTP tunnel is used by data.
  • the network will delete the user plane (EPS bearer) and will not allow data to be sent/received.
  • the control plane will always be maintained to transmit MTC small data.
  • step S410 the MME 30 detects that it is outside the predetermined time period of the time control feature according to a predetermined time period in the context of the MTC device 10.
  • step S420 the MME sends signaling to the serving gateway for the MTC device for deletion.
  • the plane of the user while still maintaining the control plane path.
  • the process can be triggered by a trigger to make
  • the MME deletes the user plane for the MTC device.
  • a GTP-C message can be employed: "Extended Delete Session Request/Response".
  • the alternate number can be used to assign the traffic type to indicate that the extended delete session request/response is used to maintain the GTP-C Control Plane Path (GTP-C Tunnel), source (i.e., EPS bearer resources).
  • GTP-C Tunnel GTP-C Control Plane Path
  • source i.e., EPS bearer resources
  • the MME will maintain the information of the GTP-C tunnel between the MME and the serving gateway for the MTC device.
  • the MME may also store other characteristics of the default EPS bearer other than the serving plane and the user plane address and TEID of the PDN gateway for the MTC device for the reconstruction of the user plane.
  • the serving gateway sends signaling to the PDN gateway for the MTC device to maintain control path information between the PGW and the SGW for the MTC device.
  • a GTP-C message may also be employed: "Extended Delete Session Request/Response".
  • the service gateway will maintain information about the GTP-C tunnel between the PGW and the SGW of the MTC device.
  • the service gateway will delete the GTP-U user plane tunnel information and release all user plane resources for the MTC device.
  • step S440 the PDN GW releases all user plane resources but maintains a signaling path between itself and the SGW for the MTC device, such as a GTP-C tunnel.
  • the PDN GW acknowledges with an extended delete session response.
  • step S450 the PDN GW initiates an IP CAN session termination procedure using PCEF as defined in TS 23.203, wherein the PCRF is used to indicate that the EPS bearer is released if the PCRF application is in the network.
  • the service gateway confirms using the extended delete session response.
  • step S470 the MME releases the S1-MME signaling connection, the S1 user plane bearer for the MTC device, and the radio bearer by transmitting an S1 release command to the eNode B.
  • the details of this step are described in the "S1 Release Process" in Section 5.3.5 of TS 23.401.
  • the specifications TS 23.203 and TS 23.401 are hereby incorporated by reference.
  • the control operation outside the predetermined time period is different from that in the EPS system.
  • the default bearer is activated at the same time, and the IP address is assigned, that is, the user plane path is passed, and the EPS user is online.
  • the user plane connection (that is, the activation of the PDP context) is not activated at the same time. Attaching and activating the user plane are two separate processes that can be operated separately. After the user attaches, the PDP context can be activated at any time, or the PDP context can be disabled, and the user equipment can always be in the attached success state.
  • the mobility management part of the SGSN (similar to the MME) only needs to deactivate the PDP context of the MTC device, so that the user plane is still deleted (the Deactivate PDP Context Request signaling of TS 23.060 can be used) ).
  • any signaling request that requires activation of the PDP context (for example, activating PDP context request signaling, or a service request message whose data type is data or represented as data) is directly rejected.
  • the MTC device since the MTC device is always in the attached state outside the predetermined time period (that is, the MTC device does not need to be disconnected outside the predetermined time period), the MTC device can perform the location update in a normal manner (that is, Routing area update). Thereby, it can be ensured that the user plane is not established outside the predetermined time period but the signaling plane can remain connected. Therefore, online small data transmission can also be performed outside the predetermined time period.
  • the online small data transmission and time control features can be simultaneously applied. For example, data can be sent and received through the user plane during a predetermined period of time, and small data can also be sent and received through the control plane. In addition to the scheduled time period, small data can also be sent and received through the control plane. Therefore, an EPC network or a GPRS network that simultaneously applies MTC features (ie, MTC online small data transmission and time control) is optimized.
  • FIG. 5 illustrates a tracking area update process outside a predetermined time period in accordance with an embodiment of the present invention.
  • the TAU process can be initiated by a trigger.
  • Steps S501-505 are the same as steps 1-5 in the TAU procedure in the conventional EPS system.
  • the TAU (Tracking Area Update) process is the same as the conventional TAU process defined in TS23.401 when it is within a predetermined time period, and will not be described again here.
  • step S506 the new MME needs to check whether it is outside the predetermined time period according to the context of the MTC device.
  • step S507 the NAS authentication process may be performed.
  • step S508 a context confirmation is performed, which is the same as step 7 in the normal EPS TAU process.
  • the new MME sends signaling to the new serving gateway to modify the control plane path.
  • the GTP-C message "Modify Control Plane Request/Response" may also be employed, and the alternate number may be used to assign the type of service to indicate the establishment of a control plane between the new MME and the new serving gateway. path.
  • the message is used to maintain the GTP-C path of the MTC device at the control plane outside of the predetermined time period, with the IP address of the new MME for the control plane and the new GTP-C TEID.
  • the new serving gateway sends signaling to the PDN gateway to establish a control plane path between the new serving gateway and the PDN gateway.
  • the GTP-C message "Modify Control Plane Request" can be used with the GTP-C TEID and IP address of the new service gateway for the control plane.
  • the PDN GW acknowledges to the new serving gateway a "Modify Control Plane Response" message with the GTP-C TEID and its IP address for the control plane.
  • the new serving GW acknowledges to the new MME a "Modify Control Plane Response" message with the GTP-C TEID and its IP address for the control plane.
  • the steps S513-520 are the same as the steps in the conventional EPS TAU process defined in the TS 23.401.
  • the new MME updates the MTC device to the HSS and is currently registered in the new MME, and details are not described herein.
  • the MTC device can also maintain a clear signaling connection (eg, the MTC device to the new MME, to the new SGW, and the signaling link of the PGW) during the mobile process.
  • the above functions can be implemented using regular routing area updates.
  • the time control feature is also applied in the embodiment of the present invention, then, over time, when the predetermined time period comes again from the time period, as shown in FIG. 6, the MME should check the time point and Rebuild the user plane for the MTC device.
  • the call flow is as follows:
  • step S601 based on the predetermined time period in the context of the MTC device, the MME checks that it returns from the predetermined time period to the predetermined time period, and the two MTC features are included in the context.
  • the process of recreating the user plane for the MTC device can be initiated by the trigger by the MME.
  • the attaching process is not required.
  • step S602 the MME transmits a create session request with information of the default EPS bearer (which is stored in the MME in step S420 as shown in FIG. 4) to the serving gateway for the MTC device.
  • This step is similar to step 12 of the attachment process in TS 23.401.
  • steps S603-606 these steps are the same as steps 13-16 of the attach procedure in TS 23.401, and both implement the creation of a user plane EPS bearer resource between the SGW and the PGW.
  • step S607 the MME sends an S1-AP Initial Context Setup Request message to the eNB.
  • This step activates the wireless and S1 bearers for the default EPS bearer.
  • This step is similar to step 4 of the UE-triggered service request in TS 23.401.
  • step S608 the eNB performs a radio bearer setup procedure.
  • step S609 the eNode B sends an S1-AP message initial context establishment completion to the MME. This step is similar to step 7 of the UE-triggered J! request in TS 23.401.
  • step S610 the MME sends a modify bearer request message to the serving gateway to notify the SGW eNB of user plane information (IP address and TEID in the user plane).
  • step S611 the serving GW sends a modify bearer response to the MME.
  • Active PDP can be requested using a regular active PDP context.
  • the Context Request message is used to implement the above functions, and is not described here.
  • step S710-720 the MTC device sends a service request to the MME through the eNB.
  • step S730 the MME checks that the 2 MTC characteristics are included outside the predetermined time period and in the context of the MTC device.
  • step S740 the MME sends a service reject message to the MTC device.
  • the above process is applied to the EPS system.
  • the signaling related to data transmission through the user plane whether it is activating PDP context request signaling, or a service request whose data type is data or represented as data, is directly rejected in the predetermined time period. .
  • downlink data from an external network arrives at a PDN outside a predetermined period of time
  • the GW, PDN GW will reject the service request because there is no user plane path for the MTC device and therefore cannot be delivered to the EPS network.
  • Fig. 8 is a block diagram showing the structure of an MTC device in accordance with one embodiment of the present invention.
  • the MTC device 810 may include: a transmitting/receiving device 812 for transmitting and/or receiving signaling and/or data; and a processing device 814 for creating signaling for transmitting or processing received Signaling, thereby transmitting the number of users to the MTC server via the communication network via signaling.
  • the created signaling indicates the MTC service type and carries the user data, and the control plane of the communication network is separated from the user plane.
  • the communication network can be, for example, a GPRS network or an EPC network.
  • the signaling may include an uplink generic NAS message or a downlink
  • the link general NAS message the general message container type information unit in the message carries an MTC service type (for example, online small data transmission), and the universal message container information unit in the message carries the user data.
  • MTC service type for example, online small data transmission
  • the processing device 814 may be further configured to: include the ID of the MTC device 810 and the IP address of the MTC server in the user data of the created signaling bearer.
  • the processing device 814 may be further configured to: create signaling to establish a signaling connection for the wireless side, wherein the signaling indicates a type of service.
  • This type of service can be online small data transmission.
  • the signaling can be an extended service request message.
  • FIG. 9 illustrates a schematic block diagram of a mobility management unit according to an embodiment of the present invention. As shown
  • the mobility management unit 930 includes a transmitting/receiving device 932 for transmitting and/or receiving signaling and/or data, and a processing device 934 for creating signaling for transmitting or processing the received signaling. And transmitting user data between the MTC device and the MTC server via the communication network, wherein the created signaling indicates the MTC service type and carries the user data, and the control plane of the communication network is separated from the user plane. .
  • the mobility management unit may comprise an MME in the EPC network or a mobility management portion of the SGSN in the GPRS network.
  • processing device 934 may be further configured to:
  • a predetermined time period is detected, which can be set by the MTC device through the HSS.
  • the information of the predetermined time period can be transmitted to the MME through the HSS.
  • processing device 934 may be further configured to:
  • Signaling is created to establish a signaling connection for the wireless side, wherein the signaling indicates a type of service.
  • This type of service can be online small data transmission.
  • the signaling created may also include extended service request messages.
  • processing device 934 may be further configured to:
  • Signaling is created to remove user plane resources and maintain control plane paths outside of a predetermined time period.
  • the signaling may indicate that the service type is online small data transmission, which may be embodied as GTP-C: extended delete session request/response message to remove user plane resources and maintain control Plane path.
  • processing device 934 may be further configured to:
  • Signaling is created to modify the control plane connection outside of the predetermined time period.
  • the signaling may indicate that the service type is online small data transmission, and may be embodied as
  • GTP-C Modify the control plane request/response message to maintain the control path of the moving MTC device outside the predetermined time period is valid or correct, thus maintaining the smoothness of the control path.
  • processing device 934 may be further configured to:
  • a transmission request for user data through the user plane is rejected outside of the detected predetermined time period.
  • the MTC device since the MTC device is not disconnected from the network outside the predetermined time period, it receives the request message for transmitting user data through the user plane, and rejects the message.
  • FIG. 10 illustrates a schematic block diagram of a user plane device in accordance with an embodiment of the present invention.
  • the user plane device 15 includes a transmitting/receiving device 152 for transmitting and/or receiving signaling and/or data, and a processing device 154 for creating signaling for transmitting or processing the received message. So, by means of the signaling, the user data is transmitted between the MTC device and the MTC server via the communication network, wherein the created signaling indicates the MTC service type and carries the user data, the control plane and the user plane of the communication network Separation.
  • processing device 154 may be further configured to:
  • Signaling is created to remove user plane resources and maintain control plane paths outside of a predetermined time period.
  • the signaling may indicate the type of service (e.g., online small data transmission) and may be embodied as a GTP-C: Extended Delete Session Request/Response message to remove user plane resources while maintaining the control plane path.
  • type of service e.g., online small data transmission
  • GTP-C Extended Delete Session Request/Response message to remove user plane resources while maintaining the control plane path.
  • processing device 154 is further configured to:
  • Signaling is created to maintain the control plane path by modifying the control plane connection outside of the predetermined time period.
  • the signaling may indicate that the service type is online small data transmission, and may be embodied as GTP-C: modify the control plane request/response message to maintain the mobile MTC outside the predetermined time period.
  • the control path of the device is valid or correct, thus maintaining the smooth flow of the control path.
  • the user plane device may comprise a serving gateway and a PDN gateway and a user plane entity portion of the GGSN and SGSN.
  • processor control code such as a carrier shield such as a disk, CD or DVD-ROM
  • a carrier shield such as a disk, CD or DVD-ROM
  • Such code is provided on a programmable memory such as a read only memory (firmware) or on a data carrier such as an optical or electronic signal carrier.
  • the EPC network, the GPRS network, the various network elements, and the MTC devices and components thereof of this embodiment may be composed of semiconductors such as oversized integrated circuits or gate arrays, such as logic chips, transistors, or the like, or such as field programmable gate arrays, programmable logic
  • the hardware circuit implementation of the programmable hardware device of the device or the like may also be implemented by software executed by various types of processors, or by a combination of the above hardware circuits and software such as firmware.

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

Abstract

La présente invention porte sur un procédé, un dispositif et un système de transmission de données dans un système de communication de machine à machine. Le système de communication de machine à machine comprend au moins un de multiples dispositifs de communication de type machine (MTC) et un serveur MTC. Le procédé consiste à transmettre entre le dispositif MTC et le serveur MTC une certaine quantité de données d'utilisateur par signalisation de transmission de réseau de communication, la signalisation indiquant le type de service MTC et contenant les données d'utilisateur, et le plan de commande étant, dans le réseau de communication, séparé du plan utilisateur.
PCT/CN2010/070564 2010-02-08 2010-02-08 Procédé et dispositif de transmission de données dans un système de communication de machine à machine WO2011094954A1 (fr)

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PCT/CN2010/070564 WO2011094954A1 (fr) 2010-02-08 2010-02-08 Procédé et dispositif de transmission de données dans un système de communication de machine à machine

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TWI610582B (zh) * 2012-07-02 2018-01-01 英特爾股份有限公司 有效的發送裝置觸發訊息的設備及方法
CN105359615A (zh) * 2013-08-08 2016-02-24 英特尔Ip公司 用于支持小数据传输的信令无线电承载优化和其他技术
US10321294B2 (en) 2013-08-08 2019-06-11 Intel IP Corporation Signaling for proximity services and D2D discovery in an LTE network
US11445345B2 (en) 2015-07-24 2022-09-13 Nec Corporation Mobile communication system, MME, terminals and method for communication
US10833832B2 (en) 2016-06-22 2020-11-10 Intel Corporation Communication device and a method for full duplex scheduling
WO2018082517A1 (fr) * 2016-11-04 2018-05-11 华为技术有限公司 Procédé, élément de réseau et système de suppression de tunnel de plan utilisateur
CN108377582A (zh) * 2016-11-04 2018-08-07 华为技术有限公司 删除用户面隧道的方法、网元及系统
CN108235309A (zh) * 2016-12-21 2018-06-29 电信科学技术研究院 一种数据处理方法及装置
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