CN102056112A - Method, equipment and system for transmitting data - Google Patents

Abstract

The invention discloses a method, equipment and a system for transmitting data, which belongs to the field of wireless communication. The method comprises the following steps of: acquiring transmission indication information of user equipment and receiving uplink service data transmitted by the user equipment through an uplink control plane signaling, wherein the transmission indication information is used for indicating to transmit service data through a control plane signaling; and according to the transmission indication information, transmitting the uplink service data to a server through a core network gateway entity. The equipment comprises an acquisition module and an uplink transmission module. The system comprises a mobile management entity, a server connected with the mobile management entity in a communication mode, and the user equipment. The method, the equipment and the system save network resources and reduce data transmission time compared with the prior art.

Description

A method, device and system for transmitting data

technical field

The present invention relates to the field of wireless communication, in particular to a method, device and system for transmitting data.

Background technique

M2M (Machine to Machine, machine-to-machine) communication, or MTC (Machine Type Communications, machine type communication), is a communication method for data transmission between machines through a wireless communication system.

Taking the M2M service of the LTE (Long Term Evolution, long-term evolution) wireless communication system as an example, the specific process of UE (User Equipment, user equipment) attaching to the network is as follows:

The UE sends an attach request message to the MME ((Mobility Management Entity, Mobility Management Network Element). If it is attached to a new MME, it needs to delete the old MME and the UE’s past bearer information that the core network may have saved. The new MME needs to obtain from the HSS (Home Subscriber Server, home user server) obtains the subscription information of the UE, and then triggers the establishment of user plane bearers through the interaction of control plane signaling, including core network user plane bearers, access network user plane bearers, and air interface user plane bearers, and finally The service data is transmitted through the established user plane bearer.

In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

For some M2M services with communication characteristics of low data volume, it is a huge loss and waste of network resources to establish all control plane and user plane bearers and only transmit data with a small amount of data.

Contents of the invention

Embodiments of the present invention provide a method, device and system for transmitting data, which can solve the problem of wasting network resources when the amount of transmitted data is small.

Described technical scheme is as follows:

A method of transmitting data, the method comprising:

Acquire transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission of service data through control plane signaling;

According to the transmission instruction information, the uplink service data is sent to the server through the core network gateway entity.

A device for transmitting data, the device comprising:

An acquisition module, configured to acquire transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission of service data through control plane signaling;

An uplink transmission module, configured to send the uplink service data to a server through a core network gateway entity according to the transmission indication information acquired by the acquisition module.

A system for transmitting data, the system comprising: the mobility management entity, and a user equipment and a server communicably connected to the mobility management entity;

The mobility management entity is configured to obtain transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission through control plane signaling business data;

Sending the uplink service data to the server through the core network gateway entity according to the transmission indication information.

The beneficial effect brought by the technical solution provided by the embodiment of the present invention is: by obtaining the transmission instruction information of the user equipment, and receiving the uplink service data sent by the user equipment through the uplink control plane signaling, according to the transmission instruction information, the uplink service data is transmitted through The core network gateway entity sends it to the server, so that the service data with a low data volume can be directly transmitted through the control plane signaling, without the need to establish a user plane bearer, which saves network resources. The transmission mode of transmitting business data also reduces the time of data transmission.

Description of drawings

FIG. 1 is a flowchart of a method for transmitting data provided in Embodiment 1 of the present invention;

FIG. 2 is a flowchart of a method for transmitting data during an attach process provided in Embodiment 2 of the present invention;

FIG. 3 is a flowchart of another method for transmitting data during an attach process provided in Embodiment 2 of the present invention;

FIG. 4 is a flow chart of another method for transmitting data during an attach process provided in Embodiment 2 of the present invention;

FIG. 5 is a flowchart of a UE-initiated UE activation process and a method for transmitting data provided in Embodiment 3 of the present invention;

FIG. 6 is a flow chart of the UE activation process initiated by the network side and the method for transmitting data provided in Embodiment 4 of the present invention;

FIG. 7 is a flow chart of a data encapsulation method provided in Embodiment 5 of the present invention;

FIG. 8 is a flowchart of a method for transmitting data provided in Embodiment 6 of the present invention;

FIG. 9 is a flow chart of another method for transmitting data provided in Embodiment 6 of the present invention;

FIG. 10 is a flowchart of a method for transmitting data provided in Embodiment 7 of the present invention;

FIG. 11 is a flowchart of another method for transmitting data provided in Embodiment 7 of the present invention;

FIG. 12 is a flowchart of another method for transmitting data provided in Embodiment 7 of the present invention;

FIG. 13 is a schematic diagram of a network architecture provided in an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a device for transmitting data provided in Embodiment 8 of the present invention;

Fig. 15 is another structural schematic diagram of the device for transmitting data provided in Embodiment 8 of the present invention;

Fig. 16 is a schematic structural diagram of a system for transmitting data provided in Embodiment 9 of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Example 1

Referring to Fig. 1, the present embodiment provides a method for transmitting data, the method comprising:

101: Obtain transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission of service data through control plane signaling;

Wherein, the transmission indication information includes: at least one of: indication of low data volume transmission, indication of using control plane transmission, service level, service characteristic and user subscription characteristic.

Wherein, the control plane signaling here refers to the air interface and access network control plane signaling between the user equipment and the mobility management entity.

102: Send the uplink service data to the server through the core network gateway entity according to the transmission instruction information.

In this embodiment, by obtaining the transmission instruction information of the user equipment and receiving the uplink service data sent by the user equipment through the uplink control plane signaling, according to the transmission instruction information, the uplink service data is sent to the server through the core network gateway entity, so that the data volume Lower service data can be directly transmitted through the control plane signaling, without the need to establish a user plane bearer, which saves network resources. Compared with the transmission mode of transmitting service data after the control plane and user plane are established, it also reduces data transmission. time.

Example 2

This embodiment provides a method for transmitting data through complete control plane signaling. Specifically, the following three methods may be used for data transmission.

Method 1: Referring to FIG. 2 , the UE sends a normal attach message before accessing. According to the obtained subscription data, the MME judges that the service should use the control plane signaling to transmit data, sends a message to the UE indicating the transmission mode, and then triggers each node on the network side to encapsulate the data in the control plane signaling message for transmission. The method specifically includes:

Step 201. The UE initiates an attach process, and sends an attach request message to the eNodeB (evolved Node B, evolved base station) through NAS (Non Access Stratum, non-access stratum) signaling;

Among them, the attach request message contains NAS-related parameters, including IMSI (International Mobile Subscriber Identity, International Mobile Subscriber Identity) or the original GUTI (Globaly Unique Temporary Identifier, Global Unique Temporary Identifier), UE core network capabilities, PDN (Packet Data Network , packet data network) type (type), PCO (Protocol Configuration Options, protocol configuration options) identification, attachment type, and security-related parameters, and carry RRC-related parameters in the RRC (Radio Resource Control, radio resource control) message, including Selected network information and original GUMMEI (Globally Unique MME Identifier, Globally Unique Mobility Management Network Element Identifier).

Step 202. The eNodeB finds the corresponding MME through the GUMMEI in the RRC message and the selected network information, and the eNodeB sends the attach request message to the MME;

Wherein, if there is no MME-related information or the eNodeB cannot find the specified MME, the eNodeB selects a new MME for it.

Step 203. Optionally, the MME initiates the process of deleting the old bearer and the context on the corresponding node;

Step 204. The MME acquires and saves the subscription information;

Specifically, if the MME that the UE accesses this time is a new MME, or there is no subscription information of the UE on the MME, the MME interacts with the HSS, sends a location update request, and obtains the subscription information from the HSS. The subscription data includes: transmission indication information, which is used to indicate the transmission of service data through control plane signaling. The transmission indication information may be: an indication that the service belongs to low data volume transmission, or an indication that the service needs to be transmitted using the control plane, or a low data volume characteristic of the service, or a service level, a service characteristic, or a user subscription Characteristics and other parameters, this embodiment does not limit its specific content.

This step is optional. If the MME originally stored the subscription data of the UE, it does not need to obtain it from the HSS.

Step 205. The MME judges whether the service of the UE adopts control plane signaling transmission according to the subscription data.

Specifically, if the transmission indication information indicates that data is transmitted using control plane signaling, the UE's service is transmitted through control plane signaling; otherwise, the MME may reject the NAS request message with data and carry the relevant reason for the rejection.

Step 206. The MME sends a data acquisition request message to the UE through NAS signaling, and the message carries UE transmission instruction information;

Wherein, the message may be borne by downlink signaling transmission of S1 signaling from the MME to the eNodeB, or may be borne by other messages. The downlink RRC transmission message may be used between the eNodeB and the UE, and it may also be carried by other messages.

Step 207. After receiving the data acquisition request message, the UE saves the UE transmission indication information according to the transmission indication information in the message, encapsulates its own uplink service data in the data acquisition response signaling message, and returns it to the MME;

Step 208. The MME initiates a session establishment request message to the SGW (Serving Gateway, serving gateway), which carries the uplink service data sent by the UE to the MME and the transmission instruction information of the UE;

In addition, the message can also carry parameters including but not limited to: UE identifier, MME control plane TEID (Tunnel Endpoint Identifier, tunnel endpoint identifier), PGW address, APN (Access Point Name, access point) and other parameters, can also include PDN address.

Step 209.SGW saves the transmission indication information of the UE, and then sends a session establishment request to the PGW (PDNGateway, packet data gateway), and the message carries the UE's uplink service data and the UE's transmission indication information;

In addition, the message may also include parameters: UE identifier, APN, SGW control plane TEID, etc., and may also include PDN address, etc.

Wherein, saving the transmission instruction information may be performed in step 209 or step 213 .

Step 210.PGW and PCRF (Policy Charging Rules Function policy and charging rule functional entity) carry out PCC (Policy and Charging Control, policy and charging control) process, formulate charging and control rules; wherein, step 210 and step 211 have no Strict timing relationship.

Step 211. The PGW saves the transmission instruction information of the UE, and performs uplink and downlink data interaction with the Server (server);

Specifically, the PGW obtains the UE's uplink service data from the signaling message, and transmits it to the Server through interaction with the Server; if the Server needs to transmit the downlink service data, it also transmits the downlink service data to be transmitted to the UE to the PGW.

Step 212. The PGW encapsulates the downlink service data in a response message, and returns a session establishment response message to the SGW;

In addition, the message may also include but not limited to parameters such as PDN GW control plane TEID and PDN address.

Step 213. The SGW encapsulates the downlink service data in a response message, and returns a session establishment response message to the MME;

In addition, the message may also include but not limited to parameters such as the PDN address and the control plane TEID of the SGW.

Wherein, the SGW saving the UE's transmission indication information in step 209 may also be performed in this step.

So far, since both the SGW and the MME have obtained each other's control plane TEID, the control plane between the SGW and the MME has been established and data transmission has also been completed.

Step 214. After receiving the response message, the MME encapsulates the downlink service data in a downlink transmission message and sends it to the eNodeB; or encapsulates the downlink service data in a NAS attach acceptance message, then encapsulates it in a downlink transmission message, and sends it to eNodeB to eNodeBs;

Wherein, the S1 message in this step carries information such as the security context of the AS layer. The NAS message includes parameters such as APN, GUTI, PDN type, PDN address, TAI (Tracking Area Identity, tracking area identification) list, security-related parameters and other information.

Step 215. The eNodeB sends a downlink direct transmission message to the UE, which carries NAS attachment completion information and downlink service data.

So far, the UE completes the attachment process and the uplink and downlink service data interaction process.

In the above method, relevant entities such as UE, MME, SGW, and PGW all store UE context and UE transmission instruction information. After the whole process is completed, the UE is in a connected state with the current network. Subsequent data transmission between the UE and the Server is completed through the interaction of control plane signaling messages.

Method 2: See Figure 3. Before accessing, the UE knows that it needs to use control plane signaling to transmit data according to the pre-configured transmission indication information or the pre-acquired transmission indication information, such as the transmission indication information reserved for the last access. The uplink service data is carried in the attach request message. According to the obtained subscription data, the MME judges that the service should use the control plane signaling to transmit the service data, thereby triggering each node on the network side to encapsulate the data in the control plane signaling message for transmission. The method specifically includes:

Step 301. The UE initiates the attach process, and sends an attach request message to the eNodeB through NAS signaling. According to the pre-configured transmission indication information or the pre-acquired transmission indication information, such as the transmission indication information reserved for the last access, in the attach request message Carry the uplink service data that the UE wants to send to the Sever;

In addition, the attach request message can also contain NAS-related parameters, including IMSI or original GUTI, UE core network capability, PDN type, PCO identifier, attach type, and security-related parameters, and carry RRC-related parameters in the RRC message, including all Select network information and original GUMMEI.

Step 302. The eNodeB finds the corresponding MME through the GUMMEI in the RRC message and the selected network information, and the eNodeB sends an attach request message to the MME, and the message carries the uplink service data of the UE;

Wherein, if there is no MME-related information or the eNodeB cannot find the specified MME, the eNodeB selects a new MME for it.

Step 303. Optionally, the process of deleting the old bearer and the context on the corresponding node initiated by the MME;

Step 304. The MME obtains and saves the subscription information;

Specifically, if the MME that the UE accesses this time is a new MME, or there is no subscription information of the UE on the MME, the MME interacts with the HSS, sends a location update request, and obtains the subscription information. The acquired subscription information is the subscription data stored on the HSS, including: transmission indication information, which is used to indicate whether to use the control plane to transmit data. The transmission indication information may be: an indication that the service belongs to low data volume transmission, or an indication that the service needs to be transmitted using the control plane, or a low data volume characteristic of the service, or a service level, a service characteristic, or a user subscription Characteristics and other parameters, the specific content of which is not limited in this embodiment.

This step is optional. If the MME originally stored the subscription data of the UE, it does not need to obtain it from the HSS.

Step 305. The MME judges whether the service of the UE adopts control plane signaling transmission according to the subscription data.

Specifically, if the transmission indication information in the subscription data indicates that the data is transmitted on the control plane, read the uplink service data in the attach request, and use the control plane signaling to transmit the service of the UE; otherwise, the MME may reject the A NAS request message with data, and carries related rejection reasons.

Step 306. The MME initiates a session establishment request message to the SGW, which carries the uplink service data sent by the UE to the MME and the transmission indication information of the UE;

In addition, the message also carries parameters including but not limited to: UE identifier, MME control plane TEID, PGW address APN and other parameters, and may also include PDN address.

Step 307. The SGW saves the transmission indication information of the UE, and then sends a session establishment request to the PGW, and the message carries the uplink service data of the UE;

In addition, the message also includes parameters: UE identifier, APN, Serving GW control plane TEID and other parameters, and may also include PDN address.

Wherein, saving the UE transmission indication information may be performed in step 307 or step 311 .

Step 308. The PGW and the PCRF perform the PCC process, and formulate charging and control rules; wherein, there is no strict timing relationship between steps 308 and 309;

Step 309. The PGW saves the transmission indication information of the UE, and performs uplink and downlink service data interaction with the Server (server);

Specifically, the PGW obtains the UE's uplink service data from the control plane signaling message, and transmits it to the Server through interaction with the Server; if necessary, the Server also transmits the downlink service data to be transmitted to the UE to the PGW.

Step 310. The PGW encapsulates the downlink service data in a response message, and returns a session establishment response message to the SGW;

Wherein, the message includes but not limited to parameters such as PDN GW control plane TEID and PDN address.

Step 311. The SGW encapsulates the downlink data in a response message, and returns a session establishment response message to the MME;

Wherein, the message includes but not limited to the PDN address, the control plane TEID of the SGW and other relevant parameters.

Wherein, the SGW may also perform this step to store the transmission indication information of the UE.

Step 312. After receiving the response message, the MME encapsulates the downlink data in a downlink transmission message and sends it to the eNodeB; or encapsulates the downlink data in a NAS attach accept message, then encapsulates it in a downlink transmission message and sends it to the eNodeB ;

Wherein, the S1 message in this step carries information such as the security context of the AS layer. The NAS message includes parameters such as APN, GUTI, PDN type, PDN address, TAI list, and security-related parameters.

Step 313. The eNodeB sends a downlink direct transmission message to the UE, which carries NAS attachment completion information and downlink service data.

In the above method, relevant entities such as UE, MME, SGW, and PGW all store UE context and UE transmission instruction information. After the whole process is completed, the UE is in a connected state with the current network. Subsequent data transmission between the UE and the Server is completed through the interaction of control plane signaling messages.

Method 3: Referring to FIG. 4 , before accessing, the UE does not know that it needs to use control plane signaling to transmit data, and sends a normal attach message. According to the obtained subscription data, the MME judges that the service should use the control plane to transmit service data, and sends messages upward for signaling interaction. The downlink service data is carried in the response message and brought to the UE layer by layer, and the UE can transmit uplink service data after receiving the attach completion message. The method specifically includes:

Steps 401-404 are the same as steps 201-204 of Method 1.

Step 405. The MME judges whether the service of the UE adopts control plane signaling transmission according to the subscription data.

Specifically, if the transmission indication information indicates that the control plane is used to transmit data, then the UE's service is transmitted through the control plane signaling; otherwise, the MME may reject the NAS request message with data and carry the relevant rejection reason.

Step 406. The MME initiates a session establishment request message to the SGW, and the message carries the transmission indication information of the UE;

In addition, the message also carries parameters including but not limited to: UE identifier, MME control plane TEID, PGW address, APN and other parameters, and may also include PDN address.

Step 407. The SGW saves the transmission instruction information of the UE, and then sends a session establishment request to the PGW, and the request carries the transmission instruction information of the UE;

In addition, the message also includes: UE identifier, APN, Serving GW user plane address, Serving GW control plane TEID and other parameters, and may also include PDN address.

Wherein, saving the transmission indication information of the UE may be performed in step 407 or step 411 .

Step 408. The PGW and the PCRF perform a PCC process to formulate charging and control rules; wherein, there is no strict sequence relationship between steps 408 and 409.

Step 409. The PGW saves the transmission indication information of the UE, and performs data interaction with the Server (server). If necessary, the Server also transmits the downlink service data to be transmitted to the UE to the PGW;

Step 410. The PGW encapsulates the downlink service data in a response message, and returns a session establishment response message to the SGW;

Wherein, the message includes but not limited to parameters such as PDN GW control plane TEID and PDN address.

Step 411. The SGW encapsulates the downlink service data in a response message, and returns a session establishment response message to the MME;

Wherein, the message carries relevant parameters including but not limited to the PDN address, the control plane TEID of the SGW, and the like.

Wherein, the SGW may also perform this step to store the transmission indication information of the UE.

Step 412. After receiving the response message, the MME encapsulates the downlink service data and UE transmission instruction information in a downlink transmission message, and sends it to the eNodeB. Or encapsulate the downlink service data and UE transmission instruction information in the NAS attach acceptance message, then encapsulate it in the downlink transmission message, and send it to the eNodeB;

Wherein, the S1 message in this step carries information such as the security context of the AS layer. The NAS message includes parameters such as APN, GUTI, PDN type, PDN address, TAI list, and security-related parameters.

Step 413. The eNodeB sends a downlink direct transmission message to the UE, which carries UE transmission indication information, NAS attachment completion information and downlink service data;

Step 414. After receiving the message, the UE saves its own transmission instruction information according to the instruction of the UE transmission instruction information. If there is uplink service data that needs to be transmitted, it will be carried through the control plane signaling, transmitted to the current network, and then sent to the server by the current network.

In the above method, relevant entities such as UE, MME, SGW, and PGW all store UE context and UE transmission instruction information. After the whole process is completed, the UE is in a connected state with the current network. Subsequent data transmission between the UE and the Server is completed through the interaction of control plane signaling messages.

In this embodiment, the uplink service data is sent to the server through the air interface, the access network and the core network control plane signaling through the transmission indication information obtained according to the attach process, and correspondingly, the server sends the downlink service data through the core network, the access network and the The air interface control plane signaling is sent to the user equipment, so that service data with a low data volume can be directly transmitted through the control plane signaling, without the need to establish a user plane bearer, which saves network resources. Compared with the establishment of both the control plane and the user plane The transmission mode of retransmitting business data reduces the time of data transmission.

Example 3

Referring to FIG. 5 , this embodiment provides a method for activating a UE in an Idle (idle) state initiated by a user side and transmitting data through control plane signaling.

After the UE establishes a connection with the network through an attach request and sends data, each relevant node in the network stores the context and required information of the UE. In the following time, the UE and the network side can also perform data transmission as needed. At the same time, if the UE does not transmit data for a period of time, the Timer (timer) on the eNodeB may expire through the existing method and notify the MME or pass the MME Methods such as direct discovery turn the UE into the Idle state. At this time, the relevant context of the UE on the eNodeB will be deleted, and the air interface connection will be released. The UE thus becomes the Idle state. If the UE in the Idle state needs to interact with the network to transmit data, it needs to be converted to the Active state. The method specifically includes:

Step 501. The UE sends the RRC message to the eNodeB carrying the NAS message to the MME to make a service request, which carries the uplink service data that the UE wants to send to the Server;

Wherein, the UE judges that its service data can be transmitted through the control plane signaling according to the information stored in the UE.

Step 502. The eNodeB sends the NAS message to the MME through the S1 message to make a service request, which carries the uplink service data that the UE wants to send to the Server;

Step 503. Optionally, a security authentication process;

Step 504. After the MME receives the message, it indicates that the uplink service data of the UE needs to be transmitted through the control plane signaling according to the transmission indication information of the UE saved by itself, then the MME reads the uplink service data carried in the service request, and sends the control plane A signaling message is sent to the SGW, which carries the uplink service data of the UE;

Wherein, the control plane signaling message belongs to the GTP-C protocol message, and may be direct transmission, bearer modification or other message types.

Step 505. After receiving the relevant message, the SGW sends a control plane signaling message to the PGW, which carries relevant data;

Wherein, the signaling message belongs to the GTP-C protocol message, and may be direct transmission, bearer modification or other message types.

Step 506. Optionally, the PGW and the PCRF execute the PCC process, which has no strict timing relationship with step 507;

Step 507. The PGW performs data interaction with the Server;

Step 508. The PGW returns a response message to the SGW, which may carry the downlink service data sent by the Server to the UE, and does not carry it if there is no downlink service data;

Step 509. The SGW returns a response message to the MME, which may carry the downlink service data sent by the Server to the UE, and does not carry it if there is no downlink service data;

Step 510. The MME returns a response message to the eNodeB, which may carry the downlink service data sent by the Server to the UE, or not if there is no downlink service data;

In addition, the response message may also carry transmission indication information of the UE, and the eNodeB may save the information.

Step 511. The eNodeB returns a response message to the UE, and the response message may carry downlink service data sent by the Server to the UE.

In addition, the response message may also carry transmission instruction information of the UE, and the UE may save the information.

In this embodiment, according to the transmission instruction information saved by the network elements of each node, when the user equipment wants to send service data, the uplink service data is sent to the server through the air interface, the access network and the core network control plane signaling. Correspondingly, if the server If downlink service data needs to be sent, it is sent to the user equipment through the core network, access network and air interface control plane signaling, so that service data with low data volume can be directly transmitted through the control plane signaling without establishing a user plane. Bearer saves network resources and reduces data transmission time compared to the transmission mode in which service data is transmitted after the control plane and user plane are established.

Example 4

Referring to FIG. 6 , this embodiment provides a method for activating a UE in an Idle state initiated by a network side and transmitting data through control plane signaling.

Step 601. When the PGW receives the downlink service data and judges that the data has the characteristics of control plane transmission, the PGW encapsulates the downlink service data through control plane signaling and sends it to the SGW;

Step 602. The SGW transmits the downlink service data to the MME through a signaling message;

Step 603. MME caches downlink service data, and sends paging (paging) message to all eNodeBs in TA;

Step 604. The eNodeB that receives the paging message sends a paging message to page the UE on the air interface;

Step 605. The UE receiving the paging message initiates a service request process, and establishes a signaling connection between the UE and the MME.

Specifically, 605a) the UE sends the RRC message to the eNodeB carrying the NAS message to the MME to perform a service request, and the message may carry the data that the UE wants to send to the Server;

605b) The eNodeB transmits the NAS message to the MME through the S1 message to perform a service request, and the message may carry the data that the UE wants to send to the Server;

605c) Optionally, perform a security authentication process.

Step 606. The MME encapsulates the downlink service data through the control plane signaling message and sends it to the eNodeB;

Step 607. The eNodeB encapsulates the downlink service data through the control plane signaling message and delivers it to the UE.

In this embodiment, according to the transmission indication information saved by the network elements of each node, the server sends the downlink service data to the user equipment through the core network, the access network and the air interface control plane signaling, so that the service data with a low data volume can pass the control Signaling on the plane is directly transmitted without establishing a user plane bearer, which saves network resources. Compared with the transmission mode in which service data is transmitted after the control plane and user plane are established, the time for data transmission is reduced.

Example 5

Referring to FIG. 7 , this embodiment provides a method for encapsulating data in a control plane signaling message for transmission. Examples 2, 3, and 4 can adopt this method, but are not limited to this method.

Step 701. The UE encapsulates the uplink service data in an IP packet. If the UE stores its own IP address and the IP address of the server, it uses its own address as the source address and the server's address as the destination address. If the UE has neither its own IP address nor the IP address of the peer end, the UE adds a preset address to the source address and destination address of the IP packet, and the preset address is used to trigger the core network gateway entity (such as PGW) Obtain the source address and destination address for the user equipment, and replace the preset address. For example: the preset address can be the PGW address, or a specific address agreed by the network, or an empty address like 0.0.0.0. The PGW cannot route data based on that specific address. Then the IP packet is encapsulated in the NAS message as a NAS PDU (Packet Data Unit, packet data unit);

Step 702. The UE sends NAS signaling to the MME, carrying relevant parameters and the uplink service data packet, and the relevant parameters include UE transmission indication information;

Step 703. After the MME receives the message, according to the UE transmission indication information, knowing that the signaling carries data, it unpacks the NAS PDU, encapsulates the IP data packet in the GTP message, and transmits it to the SGW through the signaling message;

Step 704. The MME transmits the encapsulated uplink service data to the SGW, that is, the GTP signaling transmission process;

Step 705. The SGW transmits the encapsulated uplink service data to the PGW, that is, the GTP signaling transmission process;

Step 706. After receiving the signaling message, the PGW decapsulates the IP data packet from the message. If the source address and destination address of the IP data packet are preset addresses, the PGW first obtains the source address and destination address for the user equipment according to the principle of IP address acquisition, replaces the preset address, and then routes it out;

Specifically, if the UE sends an IP data packet to the Server, the obtained source address and the destination address are respectively the IP address of the UE and the IP address of the Server; if the Server sends an IP data packet to the UE, the obtained source address and the destination address are respectively are the IP address of the Server and the IP address of the UE.

Step 707. Routing process of uplink and downlink service data IP packets between PGW and Server;

Step 708. The PGW receives the downlink service data IP packet, and the PGW encapsulates the downlink service data in the signaling according to the UE transmission indication information saved by itself;

Step 709. The PGW transmits the encapsulated downlink service data to the SGW, and the message also carries the IP address assigned to the UE;

Step 710. SGW sends control plane signaling to MME, carrying downlink service data and related parameters;

Step 711, step 712. The MME takes out the downlink service data encapsulated in the GTP signaling, encapsulates it in a NAS message and sends it to the UE;

Step 713. After receiving the signaling, the UE acquires downlink service data from it.

In this embodiment, the user equipment sets a preset address, and then triggers the packet data gateway to obtain the corresponding source address and destination address, so that service data can interact between the user equipment and the server, and solves the problem that the source address and destination address cannot be obtained normally through the user plane. Data transfer issues in the case of destination addresses.

Example 6

This embodiment provides a method for transmitting data through control plane signaling. The access network and the air interface use the control plane, the core network uses the user plane to transmit data, and the SGW performs conversion between the user plane and the control plane.

Method 1: Referring to FIG. 8 , the UE does not know that it needs to use signaling to transmit data before accessing, and sends a normal attach message.

Step 801. The UE initiates an attach procedure, and sends an attach request message to the eNodeB through NAS signaling;

Among them, the attach request message contains NAS-related parameters, including IMSI or original GUTI, UE core network capability, PDN type, PCO identifier, attach type, and security-related parameters, and carries RRC-related parameters in the RRC message, including the selected network Information and original GUMMEI.

Step 802. The eNodeB finds the corresponding MME through the GUMMEI in the RRC message and the selected network information, and the eNodeB sends the attach request message to the MME;

Wherein, if there is no MME-related information or the eNodeB cannot find the specified MME, the eNodeB selects a new MME for it.

Step 803. Optionally, the MME initiates the process of deleting the old bearer and the context on the corresponding node;

Step 804. The MME obtains the subscription information;

Specifically, if the MME that the UE accesses this time is a new MME, or there is no subscription information of the UE on the MME, the MME interacts with the HSS, sends a location update request, and obtains the subscription information from the HSS. The subscription data includes: transmission indication information, which is used to indicate the transmission of service data through control plane signaling. The transmission indication information may be: an indication that the service belongs to low data volume transmission, or an indication that the service needs to be transmitted using the control plane, or a low data volume characteristic of the service, or a service level, a service characteristic, or a user subscription Characteristics and other parameters, this embodiment does not limit its specific content.

This step is optional. If the MME originally stored the subscription data of the UE, it does not need to obtain it from the HSS.

Step 805. The MME judges whether the service data of the UE is transmitted by control plane signaling according to the subscription data.

Specifically, if it is judged to use the control plane to transmit data according to the transmission indication information in the subscription data, the control plane signaling transmission is adopted for the service of the UE; otherwise, the MME may reject the NAS request message with data and carry the relevant Denial Reason.

Step 806. The MME sends a data acquisition request message to the UE through NAS signaling, which carries the transmission instruction information of the UE;

Wherein, the message may be borne by downlink signaling transmission of S1 signaling from the MME to the eNodeB, or may be borne by other messages. The downlink RRC transmission message may be used between the eNodeB and the UE, and it may also be carried by other messages.

Step 807. After receiving the data acquisition request message, the UE saves the transmission indication information of the UE according to the indication of the UE transmission indication information, and encapsulates its own uplink service data in an acquisition data response signaling message and returns it to the MME;

Step 808. The MME initiates a session establishment request message to the SGW, and the message carries uplink service data sent by the UE to the MME and transmission instruction information of the UE. The MME allocates an EPS bearer ID for the core network bearer of the UE.

In addition, the parameters carried in the message also include but are not limited to: UE identifier, MME control plane TEID, PGW address, APN, EPS bearer ID and other parameters, and may also include PDN address.

Step 809. The SGW saves the transmission indication information of the UE, and the corresponding relationship between the MME control plane TEID and the EPS bearer ID, that is, the corresponding relationship between the control plane signaling and the core network user plane bearer, caches the UE's uplink service data, and then sends Establish a session request to PGW;

Wherein, the message includes parameters: UE identifier, APN, EPS bearer identifier, Serving GW user plane address, SGW user plane TEID, Serving GW control plane TEID, and may also include PDN address.

Wherein, saving the transmission indication information of the UE may be performed in step 809 or step 813 .

Step 810. The PGW and the PCRF perform a PCC process to formulate charging and control rules, wherein there is no strict timing relationship between step 810 and step 811;

Step 811. Optionally, if necessary, the Server also transmits the downlink service data to be transmitted to the UE to the PGW;

Step 812. The PGW allocates a new port number in the EPS bearer table for the user plane bearer to be established and generates a charging Id (charging identifier), and the PGW returns a session establishment response message;

Among them, the message carries PDN GW user plane address, PDN GW user plane TEID, PDN GW control plane TEID, PDN type, PDN address, EPS bearer identifier, EPS bearer QoS related parameters, PCO, charging information, etc.

So far, since both the SGW and the PGW will obtain each other's user plane address and user plane TEID, and the user plane bearer between the SGW and the PGW has been established. Since both the SGW and the PGW obtain each other's control plane TEID, the establishment of the control plane between the SGW and the PGW is completed.

At this time, the SGW and the PGW can exchange uplink and downlink service data through the established user plane bearer.

Step 813. Return a session establishment response message to the MME;

Wherein, the message carries PDN type, PDN address, SGW control plane TEID, EPS bearer ID, PGW address and TEID, PCO, charging information and other related parameters.

So far, both the MME and the SGW have obtained the control plane TEID of each other, and the establishment of the control plane between the SGW and the MME is completed.

In addition, if the SGW receives downlink service data from the PGW, the SGW will encapsulate the data in a corresponding message and send it to the MME according to the correspondence between the EPS bearer ID and the MME control plane TEID.

Step 814. After receiving the response message, the MME encapsulates the downlink service data in a downlink transmission message and delivers it to the eNodeB. Or encapsulate the downlink service data in the NAS attach acceptance message, then encapsulate it in the downlink transmission message, and send it to the eNodeB;

Wherein, the S1 message in this step carries information such as the security context of the AS layer. The NAS message includes parameters APN, GUTI, PDN type, PDN address, TAI list, security-related parameters, etc.

Step 815. The eNodeB sends a downlink direct transmission message to the UE, which carries NAS attachment completion information and downlink service data.

Method 2: Referring to FIG. 9 , before accessing, the UE knows that it needs to use signaling to transmit data according to service information or configuration, so the uplink service data is carried in the attach request message.

Step 901. The UE initiates the attach process, sends an attach request message to the eNodeB through NAS signaling, and encapsulates the uplink service data that needs to be sent to the Sever in the signaling according to the configuration information or the retained information about the last access send;

Among them, the attach request message contains NAS-related parameters, including IMSI or original GUTI, UE core network capability, PDN type, PCO identifier, attach type, and security-related parameters, and carries RRC-related parameters in the RRC message, including the selected network Information and original GUMMEI.

Step 902. The eNodeB finds the corresponding MME through the GUMMEI in the RRC message and the selected network information, and the eNodeB sends an attach request message to the MME, and the message carries the uplink service data of the UE;

Wherein, if there is no MME-related information or the eNodeB cannot find the specified MME, the eNodeB selects a new MME for it.

Step 903. Optionally, the process of deleting the old bearer and the context on the corresponding node initiated by the MME;

Step 904. The MME obtains the subscription information;

Specifically, if the MME that the UE accesses this time is a new MME, or there is no subscription information of the UE on the MME, the MME interacts with the HSS, sends a location update request, and obtains the subscription information. The acquired subscription information is the subscription data stored on the HSS, including: transmission indication information, which is used to indicate whether to use the control plane to transmit data. The transmission indication information may be: an indication that the service belongs to low data volume transmission, or an indication that the service needs to be transmitted using the control plane, or a low data volume characteristic of the service, or a service level, a service characteristic, or a user subscription Characteristics and other parameters, the specific content of which is not limited in this embodiment.

This step is optional. If the MME originally stored the subscription data of the UE, it does not need to obtain it from the HSS.

Step 905. The MME judges whether the service of the UE adopts the control plane signaling transmission according to the subscription data.

Specifically, if the transmission indication information in the subscription data indicates that the data is transmitted on the control plane, read the transmission indication information in the attach request, and use the control plane signaling to transmit the service of the UE; otherwise, the MME may reject the connection A NAS request message with data, and carries related rejection reasons.

Step 906. The MME initiates a session establishment request message to the SGW, which carries the uplink service data sent by the UE to the MME and the transmission instruction information of the UE. The MME allocates an EPS bearer ID for the core network bearer of the UE;

In addition, the parameters carried in the message also include but are not limited to: UE identity, MME control plane TEID, PGW address, PDN address (optional), APN, EPS bearer ID and other parameters.

Step 907. The SGW saves the transmission instruction information of the UE, and the corresponding relationship between the MME control plane TEID and the EPS bearer ID, that is, the corresponding relationship between the control plane signaling and the core network user plane bearer, caches the UE's uplink service data, and then sends Establish a session request to PGW;

Wherein, the message includes parameters: UE identifier, APN, EPS bearer identifier, Serving GW user plane address, SGW user plane TEID, Serving GW control plane TEID, and may also include PDN address.

Wherein, saving the transmission indication information of the UE may be performed in step 909 or step 913 .

Step 908 . The PGW and the PCRF perform the PCC process to formulate charging and control rules, wherein there is no strict sequence relationship between step 908 and step 909 .

Step 909 . The PGW transmits the uplink service data to the Server through interaction with the Server. If the Server needs to transmit data, it also transmits the downlink service data to be transmitted to the UE to the PGW.

Step 910. The PGW allocates a new port number in the EPS bearer table for the user plane bearer to be established and generates a charging Id, and the PGW returns a session establishment response message;

Among them, the message carries PDN GW user plane address, PDN GW user plane TEID, PDN GW control plane TEID, PDN type, PDN address, EPS bearer identifier, EPS bearer QoS related parameters, PCO, charging information, etc.

So far, both the SGW and the PGW will obtain each other's user plane address and user plane TEID, and the user plane between the SGW and PGW has been established. Both the SGW and the PGW obtain the control plane TEID of each other, and the establishment of the control plane between the SGW and the PGW is completed.

At this time, the uplink service data buffered on the SGW will be transmitted to the PGW through the established user plane bearer, and the downlink service data of the PGW can also be transmitted to the SGW through the established user plane bearer.

Step 911. After receiving the response message, return a session establishment response message to the MME;

Wherein, the message carries PDN type, PDN address, SGW control plane TEID, EPS bearer ID, PGW address and TEID, PCO, charging information and other related parameters.

Wherein, if the SGW receives downlink service data from the PGW, the SGW will encapsulate the data in a corresponding message and send it to the MME according to the corresponding relationship between the EPS bearer ID and the TEID of the MME control plane.

At this time, both the MME and the SGW obtain the control plane TEID of each other, and the establishment of the control plane between the SGW and the MME is completed.

Step 912. After receiving the response message, the MME encapsulates the downlink service data in a downlink transmission message and sends it to the eNodeB; or encapsulates the downlink service data in a NAS attach acceptance message, then encapsulates it in a downlink transmission message, and sends it to eNodeB to eNodeBs;

Wherein, the S1 message in this step carries information such as the security context of the AS layer. The NAS message includes parameters APN, GUTI, PDN type, PDN address, TAI list, security-related parameters, etc.

Step 913. The eNodeB sends a downlink direct transfer message to the UE, which carries NAS attachment completion information and downlink service data.

So far, the UE has completed the attach process but has not established the air interface and the user plane of the access network.

In this embodiment, the uplink service data is sent to the server through the air interface control plane signaling, the access network control plane Network user plane, access network control plane signaling, and air interface control plane signaling are sent to the user equipment, so that service data with low data volume can be directly transmitted through the control plane signaling without establishing a user plane bearer, saving the network Compared with the transmission mode in which the service data is transmitted after the control plane and the user plane are established, the resource reduces the data transmission time.

Example 7

This embodiment provides a method for transmitting data through control plane signaling, and the MME in the method has a user plane bearer function. When the MME receives the data sent by the air interface side and the access network side through the control plane signaling message, it will trigger the establishment of the core network user plane bearer. After the core network user plane bearer is established, the uplink and downlink data can pass through the core network. User plane bearer transfer. The data is transferred between the user plane and the control plane in the MME, and there is no need to establish a user plane bearer in the access network and the air interface.

method one:

Referring to FIG. 10 , the UE does not know that it needs to use signaling to transmit data before accessing, and initiates a normal attach process.

Step 1001. The UE initiates an attach process, and sends an attach request message to the eNodeB through NAS signaling;

Among them, the attach request message contains NAS-related parameters, including IMSI or original GUTI, UE core network capability, PDN type, PCO identifier, attach type, and security-related parameters, and carries RRC-related parameters in the RRC message, including the selected network Information and original GUMMEI.

Step 1002. The eNodeB finds the corresponding MME through the GUMMEI in the RRC message and the selected network information, and the eNodeB sends the attach request message to the MME;

Wherein, if there is no MME-related information or the eNodeB cannot find the specified MME, the eNodeB selects a new MME for it.

Step 1003. Optionally, the MME initiates the process of deleting the old bearer and the context on the corresponding node;

Step 1004. MME acquires subscription information;

Specifically, if the MME that the UE accesses this time is a new MME, or there is no subscription information of the UE on the MME, the MME interacts with the HSS, sends a location update request, and obtains the subscription information. The acquired subscription information is the subscription data stored on the HSS, including: transmission instruction information, which is used to instruct data transmission through control plane signaling. The transmission indication information may be: an indication that the service belongs to low data volume transmission, or an indication that the service needs to be transmitted using the control plane, or a low data volume characteristic of the service, or a service level, a service characteristic, or a user subscription Characteristics and other parameters, this embodiment does not limit its specific content.

This step is optional. If the MME originally stored the subscription data of the UE, it does not need to obtain it from the HSS.

Step 1005. The MME judges whether the service of the UE adopts control plane signaling transmission according to the subscription data.

Specifically, if it is judged to use the control plane to transmit data according to the transmission indication information in the subscription data, the control plane signaling transmission is adopted for the service of the UE; otherwise, the MME may reject the NAS request message with data and carry the relevant Denial Reason.

Step 1006. The MME sends a data acquisition request message to the UE through NAS signaling, which carries UE transmission indication information;

Wherein, the message may be borne by downlink signaling transmission of S1 signaling from the MME to the eNodeB, or may be borne by other messages. The downlink RRC transmission message may be used between the eNodeB and the UE, and it may also be carried by other messages.

Step 1007. After receiving the data acquisition request message, the UE saves the transmission indication information of the UE according to the indication of the transmission indication information, encapsulates its own uplink service data in the acquisition data response signaling message, and returns it to the MME;

Step 1008. The MME caches the obtained UE uplink service data, and initiates a session establishment request message to the SGW, which carries the data sent by the UE to the MME, and the MME allocates an EPS bearer ID for the core network bearer of the UE;

Among them, the parameters carried in the message also include but are not limited to: UE identity, MME control plane TEID, PGW address, APN, EPS bearer ID, downlink user plane TEID and MME user plane address, and may also include PDN address.

So far, the MME has established the corresponding relationship between the MME control plane TEID and the EPS bearer ID, that is, the corresponding relationship between the control plane signaling and the core network user plane bearer.

Step 1009. SGW sends a session establishment request to PGW;

Wherein, the message includes parameters: UE identifier, APN, EPS bearer identifier, SGW user plane address, SGW user plane TEID, Serving GW control plane TEID, and may also include PDN address.

Step 1010. The PGW and the PCRF perform a PCC process to formulate charging and control rules, wherein there is no strict sequence relationship between step 1010 and step 1011.

Step 1011 . The PGW transmits the uplink service data to the Server through interaction with the Server. If the Server needs to transmit the downlink service data, it also transmits the downlink service data to be transmitted to the UE to the PGW.

Step 1012. The PGW allocates a new port number in the EPS bearer table for the user plane bearer to be established and generates a charging Id, and the PGW returns a session establishment response message;

Among them, the message carries PDN GW user plane address, PDN GW user plane TEID, PDN GW control plane TEID, PDN type, PDN address, EPS bearer identifier, EPS bearer QoS related parameters, PCO, charging information, etc.

So far, both the SGW and the PGW will obtain each other's user plane address and user plane TEID, and the user plane between the SGW and PGW has been established. Both the SGW and the PGW obtain the control plane TEID of each other, and the establishment of the control plane between the SGW and the PGW is completed.

Step 1013. After receiving the response message, return a session establishment response message to the MME;

Wherein, the message carries PDN type, PDN address, SGW control plane TEID, EPS bearer ID, PGW address and TEID, PCO, charging information and other related parameters.

At this time, the uplink service data buffered in the MME will be transmitted to the PGW through the established user plane bearer, and the downlink service data of the PGW can also be transmitted to the MME through the established user plane bearer.

Step 1014. After receiving the response message, the MME obtains the data obtained from the user plane from the user plane bearer, encapsulates it in a downlink transmission message, and sends it to the eNodeB. Or encapsulate the downlink data in the NAS attach acceptance message, then encapsulate it in the downlink transmission message, and send it to the eNodeB;

Wherein, the S1 message in this step carries information such as the security context of the AS layer. The NAS message includes parameters APN, GUTI, PDN type, PDN address, TAI list, security-related parameters, etc.

Step 1015. The eNodeB sends a downlink direct transfer message to the UE, which carries NAS attachment completion information and downlink data. So far, the UE has completed the attachment but has not established the air interface and the user plane of the access network.

Method Two

Referring to FIG. 11 , before accessing, the UE knows that it needs to use signaling to transmit data according to service information or configuration, so the uplink data is carried in the attach request message.

Step 1101. The UE initiates the attach process, and sends an attach request message to the eNodeB through NAS signaling. Due to the configuration information on the UE, or the relevant information about the last access retained on the UE, the UE encapsulates the service data that needs to be sent to the Sever in the Send together in the signaling;

Among them, the attach request message contains NAS-related parameters, including IMSI or original GUTI, UE core network capability, PDN type, PCO identifier, attach type, and security-related parameters, and carries RRC-related parameters in the RRC message, including the selected network Information and original GUMMEI.

Step 1102. The eNodeB finds the corresponding MME through the GUMMEI in the RRC message and the selected network information, and the eNodeB sends an attach request message to the MME, and the message carries data transmitted through signaling;

Wherein, if there is no MME-related information or the eNodeB cannot find the specified MME, the eNodeB selects a new MME for it.

Step 1103. Optionally, the process of deleting the old bearer and the context on the corresponding node initiated by the MME;

Step 1104. MME acquires subscription information;

Specifically, if the MME that the UE accesses this time is a new MME, or there is no subscription information of the UE on the MME, the MME interacts with the HSS, sends a location update request, and obtains the subscription information. The acquired subscription information is the subscription data stored on the HSS, including: transmission indication information, used to indicate data transmission through the control plane. The transmission indication information may be: an indication that the service belongs to low data volume transmission, or an indication that the service needs to be transmitted using the control plane, or a low data volume characteristic of the service, or a service level, a service characteristic, or a user subscription Characteristics and other parameters, this embodiment does not limit its specific content.

This step is optional. If the MME originally stored the subscription data of the UE, it does not need to obtain it from the HSS.

Step 1105. The MME judges whether the service of the UE adopts control plane signaling transmission according to the subscription data.

Specifically, if the transmission instruction information in the subscription data indicates that the data is transmitted on the control plane, read the uplink service data in the attach request, and use the control plane signaling to transmit the service of the UE; otherwise, the MME may reject the The NAS request message for data, and carries the relevant rejection reason.

Step 1106. The MME caches the obtained UE service data, and initiates a session establishment request message to the SGW, carrying the data sent by the UE to the MME, and the MME allocates an EPS bearer ID for the core network bearer of the UE;

Among them, the parameters carried in the message include but are not limited to: UE identity, MME control plane TEID, PGW address, APN, EPS bearer ID, downlink user plane TEID and MME user plane address, and may also include PDN address, which is sent to the SGW.

So far, the MME has established the corresponding relationship between the MME control plane TEID and the EPS bearer ID, that is, the corresponding relationship between the control plane signaling and the core network user plane bearer.

Step 1107. SGW sends a session establishment request to PGW;

Wherein, the message includes parameters: UE identifier, APN, EPS bearer identifier, Serving GW user plane address, SGW user plane TEID, Serving GW control plane TEID, and may also include PDN address.

Step 1108. The PGW and the PCRF perform the PCC process, and formulate charging and control rules, where there is no strict timing relationship between steps 10 and 11;

Step 1109. The PGW transmits data to the Server through interaction with the Server, and the Server also transmits the data to be transmitted to the UE to the PGW if necessary;

Step 1110. The PGW allocates a new port number in the EPS bearer table for the user plane bearer to be established and generates a charging Id, and the PGW returns a session establishment response message;

Among them, the message carries PDN GW user plane address, PDN GW user plane TEID, PDN GW control plane TEID, PDN type, PDN address, EPS bearer identifier, EPS bearer QoS related parameters, PCO, charging information, etc.

So far, both the SGW and the PGW will obtain each other's user plane address and user plane TEID, and the user plane between the SGW and PGW has been established. Both the SGW and the PGW obtain the control plane TEID of each other, and the establishment of the control plane between the SGW and the PGW is completed.

Step 1111. After receiving the response message, return a session establishment response message to the MME;

Among them, the message carries PDN type, PDN address, SGW control plane TEID, EPS bearer ID, PGW address and TEID, PCO, charging information and other related parameters.

At this time, the uplink service data buffered in the MME will be transmitted to the PGW through the established user plane bearer, and the downlink service data of the PGW can also be transmitted to the MME through the established user plane bearer.

Step 1112. After receiving the response message, the MME obtains the data obtained from the user plane from the user plane bearer, encapsulates it in a downlink transmission message, and sends it to the eNodeB; or encapsulates the downlink data in a NAS attach acceptance message, and then Encapsulated in the downlink transmission message and sent to the eNodeB;

Wherein, the S1 message in this step, such as the downlink transmission message and the NAS attach acceptance message, carries information such as the security context of the AS layer. The NAS message includes parameters APN, GUTI, PDN type, PDN address, TAI list, security-related parameters, etc.

Step 1113. The eNodeB sends a downlink direct transmission message to the UE, which carries NAS attachment completion information and downlink data. So far, the UE has completed the attachment but has not established the air interface user plane.

Method three:

Referring to FIG. 12 , this embodiment provides a method for activating a UE in an Idle state initiated by the network side and transmitting a low amount of data through signaling.

Step 1201. The downlink service data is delivered to the MME through the bearer of the user plane;

Step 1202. After the MME receives the data, it sends a paging (paging) message to all eNodeBs in the TA;

Step 1203. The eNodeB that receives the paging sends a paging message on the air interface to page the UE;

Step 1204. After receiving the paging message, the UE initiates a service request process and establishes a signaling connection between the UE and the MME;

Specifically, 1204a) the UE sends the RRC message to the eNodeB carrying the NAS message to the MME to perform a service request, and the message can carry the data that the UE wants to send to the Server;

1204b) The eNodeB transmits the NAS message to the MME through the S1 message to perform a service request, and the message can carry the data that the UE wants to send to the Server;

1204c) Optionally, perform a security authentication process;

Step 1205. The MME encapsulates the downlink service data through the control plane signaling message and sends it to the eNodeB;

Step 1206. The eNodeB encapsulates the downlink service data through the control plane signaling message and delivers it to the UE.

In this embodiment, during the attachment process and the activation process, the uplink service data is sent to the server through the air interface control plane signaling, the access network control plane signaling, and the core network user plane. Correspondingly, the server sends the downlink service data through the core network The user plane, access network control plane signaling and air interface control plane signaling are sent to the user equipment, so that service data with a low data volume can be directly transmitted through the control plane signaling without establishing a user plane bearer, saving network resources Compared with the transmission mode in which service data is transmitted after both the control plane and the user plane are established, the data transmission time is reduced.

The above embodiments are all described by taking the LTE network architecture as an example. The embodiments of the present invention do not limit the specific network architecture, and are also applicable to other network architectures, such as heterogeneous systems, CDMA200 systems, WCDMA systems, and Wimax and WLAN systems. Referring to FIG. 13 , under the above-mentioned wireless network architecture, the user equipment 1301 communicates with the server 1305 through the access network element 1302, the mobility management entity 1303, and the core network gateway entity 1304 through the control plane communication provided by Embodiment 1-7. The data transmission method is used to transmit data, that is, the air interface and the access network use control plane signaling for data transmission, and the core network uses control plane signaling or user plane for data transmission. The embodiment of the present invention does not limit the specific network elements that pass through. For example, in the LTE system, the network element of the access network is eNodeB, the mobility management entity is MME, the gateway entity of the core network is SGW and PGW; in the WCDMA system, the network elements of the access network are RNC and NodeB, and the mobility management entity is the SGSN, and the core network gateway entity is the GGSN. Other wireless network architectures are similar to this and will not be listed one by one.

Example 8

Referring to Figure 14, this embodiment provides a device for transmitting data, including:

The obtaining module 1401 is configured to obtain transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission of service data through control plane signaling;

The uplink transmission module 1402 is configured to send the uplink service data to the server through the core network gateway entity according to the transmission indication information acquired by the acquisition module 1401 .

Referring to Figure 15, wherein, the acquisition module 1401 includes:

a request receiving unit 1401a, configured to receive an attach request sent by the user equipment;

The instruction obtaining unit 1401b is configured to obtain the transmission instruction information of the user equipment according to the attach request received by the request receiving unit 1401a;

The instruction sending unit 1401c is configured to send the transmission instruction information acquired by the instruction acquisition unit 1401b to the user equipment, where the transmission instruction information is used to instruct the user equipment to transmit uplink service data by using uplink control plane signaling after receiving the transmission instruction information;

The data receiving unit 1401d is configured to receive uplink service data sent by the user equipment through uplink control plane signaling.

Wherein, the acquisition module 1401 also includes a storage unit 1401e,

The storage unit 1401e is configured to store the transmission indication information after the indication acquisition unit 1401b acquires the transmission indication information of the user equipment according to the attach request;

The data receiving unit 1401d is further configured to: when the uplink control plane signaling is a service request, receive a service request carrying uplink service data sent by the user equipment, and the uplink service data is carried in the service request by the user equipment according to the obtained transmission indication information sent in;

Read the uplink service data carried in the service request according to the transmission indication information stored in the device.

further,

The request receiving unit 1401a is further configured to receive an attach request carrying uplink service data sent by the user equipment when the uplink control plane signaling is an attach request, and the uplink service data is carried by the user equipment according to pre-configured or pre-acquired transmission instruction information The attach request is sent;

The instruction obtaining unit 1401b is further configured to obtain transmission instruction information of the user equipment according to the attach request received by the request receiving unit 1401a;

The data receiving unit 1401d is further configured to read the uplink service data carried in the attach request according to the transmission indication information acquired by the indication acquiring unit 1401b.

Wherein, the uplink transmission module 1402 includes: an uplink control plane transmission unit 1402a or an uplink user plane transmission unit 1402b;

The uplink control plane transmission unit 1402a is configured to carry the uplink service data and the transmission indication information in the uplink core network control plane signaling and send them to the core network gateway entity according to the transmission indication information acquired by the acquisition module 1401, so that the core network gateway stores transmit indication information and send uplink business data to the server;

The uplink user plane transmission unit 1402b is configured to establish a core network user plane bearer according to the transmission indication information acquired by the acquisition module 1401, and establish a corresponding relationship between control plane signaling and core network user plane bearer, where the control plane signaling includes uplink control According to the corresponding relationship between the uplink control plane signaling and the downlink control plane signaling, it is determined that the uplink control plane signaling corresponds to the core network user plane bearer, and the uplink service data and transmission instruction information are carried on the core network user plane bearer corresponding to the uplink control plane signaling Send it to the core network gateway entity, so that the core network gateway entity stores the transmission indication information and sends the uplink service data to the server.

Wherein, the device further includes a storage module 1403 and a downlink transmission module 1404;

The storage module 1403 is configured to store the transmission indication information after the acquisition module 1401 acquires the transmission indication information of the user equipment;

The downlink transmission module 1404 includes a downlink control plane transmission unit 1404a or a downlink user plane transmission unit 1404b;

The downlink control plane transmission unit 1404a is configured to receive the downlink service data sent by the core network gateway entity, the downlink service data is sent by the core network gateway entity through the downlink core network control plane signaling according to the transmission instruction information stored in the core network gateway entity of;

Send the downlink service data to the user equipment through downlink control plane signaling according to the transmission instruction information stored in the storage module 1403;

The downlink user plane transmission unit 1404b is configured to receive downlink service data sent by the core network gateway entity, the downlink service data is sent by the core network gateway entity through the core network user plane bearer according to the transmission instruction information stored in the core network gateway entity;

Determine the downlink control plane signaling corresponding to the core network user plane bearer according to the corresponding relationship established by the uplink user plane transmission unit 1402b;

According to the transmission instruction information stored in the storage module 1403, the downlink service data is sent to the user equipment through downlink control plane signaling.

The device for transmitting data provided in this embodiment belongs to the same idea as the mobility management entity in the method embodiment. For the specific implementation process, refer to the method embodiment for details and will not be repeated here.

The device provided in this embodiment obtains the transmission indication information of the user equipment, receives the uplink service data sent by the user equipment through the uplink control plane signaling, and sends the uplink service data to the server through the core network gateway entity according to the transmission indication information, In this way, service data with low data volume can be directly transmitted through control plane signaling without establishing user plane bearer, which saves network resources. Compared with the transmission mode of transmitting service data after both the control plane and user plane are established, Reduced data transfer time.

Example 9

Referring to FIG. 16, this embodiment provides a system for transmitting data, including: a mobility management entity 1501, and a user equipment 1502 and a server 1503 connected to the mobility management entity 1501 in a communicable manner;

The mobility management entity 1501 is used to obtain the transmission indication information of the user equipment 1502, and receive the uplink service data sent by the user equipment 1502 through the uplink control plane signaling, and the transmission indication information is used to indicate the transmission of service data through the control plane signaling;

According to the transmission instruction information, the uplink service data is sent to the server 1503 through the core network gateway entity.

Among them, the mobility management entity 1501 is specifically configured to receive the attach request sent by the user equipment 1502; obtain the transmission instruction information of the user equipment 1502 according to the attach request; send the obtained transmission instruction information to the user equipment 1502, and use the transmission instruction information After instructing the user equipment 1502 to receive the transmission instruction information, transmit the uplink service data by using the uplink control plane signaling; receive the uplink service data sent by the user equipment 1502 through the uplink control plane signaling.

Wherein, the mobility management entity 1501 is specifically configured to store the transmission indication information after obtaining the transmission indication information of the user equipment 1502 according to the attach request; when the uplink control plane signaling is a service request, receive the carried uplink service sent by the user equipment 1502 For the service request of data, the uplink service data is carried in the service request and sent by the user equipment 1502 according to the obtained transmission instruction information; according to the stored transmission instruction information, the uplink service data carried in the service request is read.

Wherein, the mobility management entity 1501 is specifically configured to receive an attach request carrying uplink service data sent by the user equipment 1502 when the uplink control plane signaling is an attach request, and the uplink service data is pre-configured or pre-acquired by the user equipment 1502 The transmission indication information is carried in the attach request; according to the attach request, the transmission indication information of the user equipment 1502 is acquired; according to the acquired transmission indication information, the uplink service data carried in the attach request is read.

Among them, the mobility management entity 1501 is specifically configured to carry the uplink service data and transmission indication information in the uplink core network control plane signaling and send them to the core network gateway entity according to the transmission indication information, so that the core network gateway stores the transmission indication information and Send the uplink service data to the server 1503; or,

According to the transmission instruction information, establish the core network user plane bearer, and establish the corresponding relationship between the control plane signaling and the core network user plane bearer. The control plane signaling includes uplink control plane signaling and downlink control plane signaling. According to the corresponding relationship, determine The uplink control plane signaling corresponds to the core network user plane bearer, and the uplink service data and transmission indication information are carried in the core network user plane bearer corresponding to the uplink control plane signaling and sent to the core network gateway entity, so that the core network gateway entity stores and transmits Indicate the information and send the uplink service data to the server 1503 .

Wherein, the mobility management entity 1501 is further configured to store the transmission indication information after acquiring the transmission indication information of the user equipment 1502;

Receive the downlink service data sent by the core network gateway entity, the downlink service data is sent by the core network gateway entity through the downlink core network control plane signaling according to the transmission indication information stored in the core network gateway entity;

According to the stored transmission instruction information, the downlink service data is sent to the user equipment 1502 through downlink control plane signaling.

Wherein, the mobility management entity 1501 is further configured to store the transmission indication information after acquiring the transmission indication information of the user equipment 1502;

Receive the downlink service data sent by the core network gateway entity, the downlink service data is sent by the core network gateway entity through the bearer of the core network user plane according to the transmission instruction information stored in the core network gateway entity;

According to the corresponding relationship, determine the downlink control plane signaling corresponding to the core network user plane bearer;

According to the transmission instruction information stored in the device that acquires the transmission instruction information of the user equipment 1502, the downlink service data is sent to the user equipment 1502 through downlink control plane signaling.

Among them, the mobility management entity 1501 sends the uplink service data to the core network gateway entity according to the transmission instruction information, and the source address and destination address of the uplink service data are set as preset addresses by the user equipment 1502; the core network gateway entity detects that the uplink When the source address and destination address of the service data are preset addresses, the preset address is replaced, and the uplink service data is sent to the server 1503 .

Wherein, the transmission indication information includes: at least one of: indication of low data volume transmission, indication of using control plane transmission, service level, service characteristic and user subscription characteristic.

The user equipment, mobility management entity, core network gateway entity, server, etc. involved in the system provided by this embodiment belong to the same concept as the method embodiment, and its specific implementation process is detailed in the method embodiment, and will not be repeated here.

This embodiment provides a system that acquires the transmission instruction information of the user equipment, receives the uplink service data sent by the user equipment through the uplink control plane signaling, and sends the uplink service data to the server through the core network gateway entity according to the transmission instruction information, thereby The service data with low data volume can be directly transmitted through the control plane signaling without establishing the user plane bearer, which saves network resources. time for data transmission.

All or part of the technical solutions provided by the above embodiments can be realized by software programming, and the software program is stored in a readable storage medium, such as a hard disk, an optical disk or a floppy disk in a computer.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (19)

1. A method for transmitting data, characterized in that the method comprises: Acquire transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission of service data through control plane signaling; According to the transmission instruction information, the uplink service data is sent to the server through the core network gateway entity. 2. The method according to claim 1, wherein the acquiring the transmission instruction information of the user equipment, and receiving the uplink service data sent by the user equipment through uplink control plane signaling comprises: receiving an attach request sent by the user equipment; Acquiring transmission instruction information of the user equipment according to the attach request; Sending the acquired transmission indication information to the user equipment, where the transmission indication information is used to instruct the user equipment to transmit uplink service data by using uplink control plane signaling after receiving the transmission indication information; receiving the uplink service data sent by the user equipment through the uplink control plane signaling. 3. The method according to claim 2, wherein after acquiring the transmission indication information of the user equipment according to the attachment request, the method further comprises: storing the transmission indication information; The acquiring the transmission indication information of the user equipment, and receiving the uplink service data sent by the user equipment through the uplink control plane signaling includes: When the uplink control plane signaling is a service request, receiving a service request sent by the user equipment and carrying the uplink service data, the uplink service data is the transmission indication information obtained by the user equipment according to the user equipment , carried in the service request; Read the uplink service data carried in the service request according to the stored transmission indication information. 4. The method according to claim 1, wherein the acquiring the transmission instruction information of the user equipment and receiving the uplink service data sent by the user equipment through uplink control plane signaling comprises: When the uplink control plane signaling is an attach request, receiving an attach request sent by the user equipment and carrying the uplink service data, the uplink service data is transmission indication information that is pre-configured or pre-acquired by the user equipment carried in the attach request sent; Acquiring transmission instruction information of the user equipment according to the attach request; Read the uplink service data carried in the attach request according to the acquired transmission indication information. 5. The method according to claim 1, wherein the sending the uplink service data to the server through the core network gateway entity according to the transmission indication information comprises: According to the transmission instruction information, carry the uplink service data and transmission instruction information in the uplink core network control plane signaling and send them to the core network gateway entity, so that the core network gateway stores the transmission instruction information and sending the uplink service data to the server; or, Establish a core network user plane bearer according to the transmission indication information, and establish a corresponding relationship between control plane signaling and the core network user plane bearer, where the control plane signaling includes the uplink control plane signaling and the downlink control plane Signaling, according to the corresponding relationship, determine that the uplink control plane signaling corresponds to the core network user plane bearer, and carry the uplink service data and transmission instruction information in the uplink control plane signaling corresponding to the The core network user plane bearer is sent to the core network gateway entity, so that the core network gateway entity stores the transmission indication information and sends the uplink service data to the server. 6. The method according to claim 5, wherein after the acquisition of the transmission instruction information of the user equipment, the method further comprises: storing the transmission instruction information; The uplink service data and transmission indication information are carried in the uplink core network control plane signaling and sent to the core network gateway entity, so that the core network gateway stores the transmission indication information and transmits the uplink service data After sending to the server, the method also includes: receiving the downlink service data sent by the core network gateway entity, the downlink service data is the downlink core network control plane signaling by the core network gateway entity according to the transmission indication information stored in the core network gateway entity sent; Sending the downlink service data to the user equipment through downlink control plane signaling according to the stored transmission indication information. 7. The method according to claim 5, wherein after the acquisition of the transmission instruction information of the user equipment, the method further comprises: storing the transmission instruction information; carrying the uplink service data and transmission instruction information in the core network user plane bearer corresponding to the uplink control plane signaling and sending them to the core network gateway entity, so that the core network gateway entity stores the After transmitting the indication information and sending the uplink service data to the server, the method further includes: receiving the downlink service data sent by the core network gateway entity, the downlink service data is sent by the core network gateway entity through the bearer of the core network user plane according to the transmission indication information stored in the core network gateway entity ; According to the corresponding relationship, determine the downlink control plane signaling corresponding to the core network user plane bearer; Sending the downlink service data to the user equipment through the downlink control plane signaling according to the transmission indication information stored in the device that acquires the transmission indication information of the user equipment. 8. The method according to claim 1, wherein the sending the uplink service data to the server through the core network gateway entity according to the transmission indication information comprises: sending the uplink service data to the core network gateway entity according to the transmission instruction information, and the source address and destination address of the uplink service data are set as preset addresses by the user equipment; When the core network gateway entity detects that the source address and destination address of the uplink service data are preset addresses, it replaces the preset address and sends the uplink service data to the server. 9. The method according to any one of claims 1-8, wherein the transmission instruction information includes: At least one of an indication of low data volume transmission, an indication of transmission using a control plane, a service level, a service characteristic, and a user subscription characteristic. 10. A device for transmitting data, characterized in that the device comprises: An acquisition module, configured to acquire transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission of service data through control plane signaling; An uplink transmission module, configured to send the uplink service data to a server through a core network gateway entity according to the transmission indication information acquired by the acquisition module. 11. The device according to claim 10, wherein the acquisition module comprises: a request receiving unit, configured to receive an attach request sent by the user equipment; an indication acquiring unit, configured to acquire transmission indication information of the user equipment according to the attach request received by the request receiving unit; an instruction sending unit, configured to send the transmission instruction information acquired by the instruction acquisition unit to the user equipment, where the transmission instruction information is used to instruct the user equipment to use uplink after receiving the transmission instruction information; The control plane signaling transmits uplink service data; A data receiving unit, configured to receive the uplink service data sent by the user equipment through the uplink control plane signaling. 12. The device according to claim 11, wherein the acquisition module further comprises a storage unit, The storage unit is configured to store the transmission indication information after the indication acquisition unit acquires the transmission indication information of the user equipment according to the attachment request; The data receiving unit is specifically configured to: when the uplink control plane signaling is a service request, receive the service request carrying the uplink service data sent by the user equipment, the uplink service data being the service request of the user equipment According to the obtained transmission instruction information, carried in the service request; Read the uplink service data carried in the service request according to the transmission indication information stored in the device. 13. The apparatus of claim 11 wherein, The request receiving unit is further configured to receive, when the uplink control plane signaling is an attach request, an attach request that carries the uplink service data sent by the user equipment, and the uplink service data is provided by the user equipment according to The pre-configured or pre-acquired transmission indication information is carried in the attach request; The indication acquiring unit is further configured to acquire transmission indication information of the user equipment according to the attach request received by the request receiving unit; The data receiving unit is further configured to read the uplink service data carried in the attach request according to the transmission indication information acquired by the indication acquiring unit. 14. The device according to claim 10, wherein the uplink transmission module comprises: an uplink control plane transmission unit or an uplink user plane transmission unit; The uplink control plane transmission unit is configured to carry the uplink service data and transmission indication information in the uplink core network control plane signaling to the core network according to the transmission indication information acquired by the acquisition module a gateway entity, causing the core network gateway to store the transmission indication information and send the uplink service data to the server; The uplink user plane transmission unit is configured to establish a core network user plane bearer according to the transmission indication information acquired by the acquiring module, and establish a corresponding relationship between control plane signaling and the core network user plane bearer, the The control plane signaling includes the uplink control plane signaling and downlink control plane signaling, and according to the corresponding relationship, it is determined that the uplink control plane signaling corresponds to the core network user plane bearer, and the uplink service data carrying the transmission indication information in the core network user plane bearer corresponding to the uplink control plane signaling and sending it to the core network gateway entity, so that the core network gateway entity stores the transmission indication information and sends the uplink The business data is sent to the server. 15. The device according to claim 14, further comprising a storage module and a downlink transmission module; The storage module is configured to store the transmission indication information after the acquisition module acquires the transmission indication information of the user equipment; The downlink transmission module includes a downlink control plane transmission unit or a downlink user plane transmission unit; The downlink control plane transmission unit is configured to receive downlink service data sent by the core network gateway entity, the downlink service data is the core network gateway entity according to the transmission instruction stored in the core network gateway entity The information is sent through the downlink core network control plane signaling; sending the downlink service data to the user equipment through downlink control plane signaling according to the transmission indication information stored in the storage module; The downlink user plane transmission unit is configured to receive downlink service data sent by the core network gateway entity, the downlink service data is the core network gateway entity according to the transmission instruction stored in the core network gateway entity The information is sent through the bearer of the user plane of the core network; determining the downlink control plane signaling corresponding to the core network user plane bearer according to the corresponding relationship established by the uplink user plane transmission unit; Sending the downlink service data to the user equipment through the downlink control plane signaling according to the transmission indication information stored in the storage module. 16. A system for transmitting data, characterized in that the system comprises: the mobility management entity, and a user equipment and a server connected to the mobility management entity in a communicable manner; The mobility management entity is configured to obtain transmission indication information of the user equipment, and receive uplink service data sent by the user equipment through uplink control plane signaling, where the transmission indication information is used to indicate transmission through control plane signaling business data; Sending the uplink service data to the server through the core network gateway entity according to the transmission indication information. 17. The system of claim 16, wherein: The mobility management entity is specifically configured to carry the uplink service data and transmission indication information in uplink core network control plane signaling and send them to the core network gateway entity according to the transmission indication information, so that the core network The network gateway stores the transmission indication information and sends the uplink service data to the server; or, Establish a core network user plane bearer according to the transmission indication information, and establish a corresponding relationship between control plane signaling and the core network user plane bearer, where the control plane signaling includes the uplink control plane signaling and the downlink control plane Signaling, according to the corresponding relationship, determine that the uplink control plane signaling corresponds to the core network user plane bearer, and carry the uplink service data and transmission instruction information in the uplink control plane signaling corresponding to the The core network user plane bearer is sent to the core network gateway entity, so that the core network gateway entity stores the transmission indication information and sends the uplink service data to the server. 18. The system of claim 17, wherein: The mobility management entity is further configured to store the transmission indication information after acquiring the transmission indication information of the user equipment; receiving the downlink service data sent by the core network gateway entity, the downlink service data is the downlink core network control plane signaling by the core network gateway entity according to the transmission indication information stored in the core network gateway entity sent; Sending the downlink service data to the user equipment through downlink control plane signaling according to the stored transmission instruction information. 19. The system of claim 17, wherein: The mobility management entity is further configured to store the transmission indication information after acquiring the transmission indication information of the user equipment; receiving the downlink service data sent by the core network gateway entity, the downlink service data is sent by the core network gateway entity through the bearer of the core network user plane according to the transmission indication information stored in the core network gateway entity ; According to the corresponding relationship, determine the downlink control plane signaling corresponding to the core network user plane bearer; Sending the downlink service data to the user equipment through the downlink control plane signaling according to the stored transmission instruction information.

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