CN108600994B - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- CN108600994B CN108600994B CN201710130869.1A CN201710130869A CN108600994B CN 108600994 B CN108600994 B CN 108600994B CN 201710130869 A CN201710130869 A CN 201710130869A CN 108600994 B CN108600994 B CN 108600994B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
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Abstract
The invention provides a data transmission method and a data transmission device, wherein the data transmission method comprises the following steps: establishing a subscription relationship with a mobility management entity MME currently serving the terminal; receiving a subscription notification triggered by the MME according to the subscription relationship, wherein the subscription notification comprises state information of the terminal; and when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, sending the pre-cached data to the terminal. According to the scheme, a subscription relationship is established between the Mobile Management Entity (MME) serving the terminal currently and a subscription notification triggered by the MME according to the subscription relationship is received, wherein the subscription notification comprises the state information of the terminal; further, when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, the pre-cached data is sent to the terminal; the terminal can receive data in time, unnecessary interaction with an application layer is reduced, and efficiency is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
Background
In the prior art, if the conventional packet domain PS data is used to transmit downlink data, if the transmission fails (for example, the terminal enters a sleep state, cannot receive paging and cannot receive data), the data is not stored in the operator network and is directly discarded, and the following two methods are only used for subsequent data transmission:
in the first method, downlink data transmission is performed again at intervals;
in the second method, when the terminal can receive downlink data, the terminal interactively informs the network that downlink data transmission can be performed through the application layer.
However, these two methods have the following disadvantages:
the first method has the disadvantages that: if the transmission is carried out at intervals, the terminal can be in a data unreceivable state at the moment and fails again;
the second method has the following disadvantages: when the terminal is on line, the application layer is used for informing the network that data can be received, some data interaction is needed, and downlink data is not sent down at some time when the terminal interacts with the network every time, so that the power consumption of the terminal is increased and the efficiency is lower.
Disclosure of Invention
The invention aims to provide a data transmission method and a data transmission device, and solves the problems that a terminal cannot receive data timely and is low in efficiency in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a data transmission method applied to a data domain transmission platform, including:
establishing a subscription relationship with a mobility management entity MME currently serving the terminal;
receiving a subscription notification triggered by the MME according to the subscription relationship, wherein the subscription notification comprises state information of the terminal;
and when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, sending the pre-cached data to the terminal.
Optionally, the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal includes:
and when the MME currently serving the terminal fails to page the terminal to receive data, establishing a subscription relationship with the MME.
Optionally, when the MME currently serving the terminal fails to page the terminal to receive the data, the data transmission method further includes:
and caching data to be issued to the terminal to form the pre-cached data.
Optionally, the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal includes:
before sending data to the terminal, establishing a subscription relationship with a Mobility Management Entity (MME) currently serving the terminal.
Optionally, after the receiving the subscription notification triggered by the MME according to the subscription relationship, the data transmission method further includes:
if data to be issued to the terminal exists and the state information indicates that the terminal cannot receive the data currently, caching the data to be issued to the terminal to form pre-cached data; and/or
And if the data to be issued to the terminal exist and the state information indicates that the terminal can receive the data currently, the data to be issued to the terminal is sent to the terminal.
Optionally, when the pre-buffered data is formed, the data transmission method further includes:
and informing a third party Application Server (AS) of data transmission failure, wherein the third party AS is a server for transmitting preset data to the data domain transmission platform, and the preset data is data to be transmitted to the terminal.
Optionally, after sending the pre-buffered data to the terminal, the data transmission method further includes:
and informing the third party of successful data transmission.
Optionally, before the subscription relationship is established with the mobility management entity MME currently serving the terminal, the data transmission method further includes:
acquiring identity information of a Mobility Management Entity (MME) currently serving a terminal through interaction with a Home Subscriber Server (HSS);
the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal comprises the following steps:
and establishing a subscription relationship with a Mobile Management Entity (MME) currently serving the terminal according to the identity information.
Optionally, after the sending the pre-buffered data to the terminal, the data transmission method further includes:
sending subscription cancellation information for canceling the subscription relationship to the MME;
receiving cancellation confirmation information fed back by the MME according to the subscription cancellation information;
and canceling the subscription relationship with the MME according to the cancellation confirmation information.
Optionally, the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal includes:
sending subscription request information to the MME;
receiving subscription confirmation information fed back by the MME according to the subscription request information;
and establishing a subscription relation with a Mobile Management Entity (MME) currently serving the terminal according to the subscription confirmation information.
The invention also provides a data transmission method, which is applied to the MME and comprises the following steps:
establishing a subscription relationship with a data domain transmission platform;
acquiring state information of a terminal currently served by the MME;
and feeding back the state information to the data domain transmission platform according to the subscription relation.
Optionally, after the feeding back the state information to the data domain transmission platform according to the subscription relationship, the data transmission method further includes:
receiving subscription canceling information for canceling the subscription relationship, which is sent by the data domain transmission platform;
and feeding back cancellation confirmation information to the data domain transmission platform according to the subscription cancellation information, and canceling the subscription relation between the data domain transmission platform and the data domain transmission platform.
Optionally, the step of establishing a subscription relationship with the data domain transmission platform includes:
receiving subscription request information sent by the data domain transmission platform;
and feeding back subscription confirmation information to the data domain transmission platform according to the subscription request information, and establishing a subscription relation with the data domain transmission platform.
Optionally, the step of feeding back the state information to the data domain transmission platform according to the subscription relationship includes:
triggering a subscription notification according to the subscription relationship, wherein the subscription notification comprises the state information of the terminal;
and sending the subscription notification to the data domain transmission platform.
Optionally, before the subscription relationship is established between the data domain transmission platform and the data transmission method, the data transmission method further includes:
when receiving a data transmission notice, paging the terminal to receive data;
and when the response information fed back by the terminal according to the paging is not received, the data domain transmission platform is notified that the paging is failed.
The invention also provides a data transmission device, which is applied to a data domain transmission platform and comprises:
a first establishing module, configured to establish a subscription relationship with a mobility management entity MME currently serving a terminal;
a first receiving module, configured to receive a subscription notification triggered by the MME according to the subscription relationship, where the subscription notification includes state information of the terminal;
and the first sending module is used for sending the pre-cached data to the terminal when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data.
Optionally, the first establishing module includes:
the first establishing submodule is used for establishing a subscription relationship with the MME when the MME serving the terminal at present fails to page the terminal to receive data.
Optionally, the data transmission apparatus further includes:
and the first caching module is used for caching data to be issued to the terminal when the MME fails to page the terminal to receive the data, so as to form the pre-cached data.
Optionally, the first establishing module includes:
and the second establishing submodule is used for establishing a subscription relationship with a Mobility Management Entity (MME) serving the terminal at present before sending data to the terminal.
Optionally, the data transmission apparatus further includes:
a first processing module, configured to, after receiving the subscription notification triggered by the MME according to the subscription relationship, if there is data to be delivered to the terminal and the state information indicates that the terminal cannot currently receive the data, cache the data to be delivered to the terminal to form the pre-cached data; and/or
And if the data to be issued to the terminal exist and the state information indicates that the terminal can receive the data currently, the data to be issued to the terminal is sent to the terminal.
Optionally, the data transmission apparatus further includes:
the first notification module is used for notifying a third-party application server AS of data transmission failure when the pre-cached data is formed, wherein the third-party AS is a server for transmitting preset data to the data domain transmission platform, and the preset data is data to be transmitted to the terminal.
Optionally, the data transmission apparatus further includes:
and the second notification module is used for notifying the third party of successful data transmission after the pre-cached data is transmitted to the terminal.
Optionally, the data transmission apparatus further includes:
the first acquisition module is used for acquiring the identity information of the current mobile management entity MME serving the terminal through interaction with a home subscriber server HSS before the subscription relationship is established between the first acquisition module and the current mobile management entity MME serving the terminal;
the first establishing module comprises:
and the third establishing submodule is used for establishing a subscription relation between the identity information and a Mobility Management Entity (MME) serving the terminal currently.
Optionally, the data transmission apparatus further includes:
a second sending module, configured to send, to the MME, subscription cancellation information for canceling the subscription relationship after the pre-cached data is sent to the terminal;
a second receiving module, configured to receive cancellation confirmation information fed back by the MME according to the subscription cancellation information;
and the first cancelling module is used for cancelling the subscription relationship with the MME according to the cancellation confirmation information.
Optionally, the first establishing module includes:
a first sending submodule, configured to send subscription request information to the MME;
a first receiving submodule, configured to receive subscription confirmation information fed back by the MME according to the subscription request information;
and the fourth establishing submodule is used for establishing a subscription relation with a Mobile Management Entity (MME) serving the terminal currently according to the subscription confirmation information.
The invention also provides a data transmission device, which is applied to the MME and comprises the following components:
the second establishing module is used for establishing a subscription relationship with the data domain transmission platform;
a second obtaining module, configured to obtain state information of a terminal currently served by the MME;
and the first feedback module is used for feeding back the state information to the data domain transmission platform according to the subscription relation.
Optionally, the data transmission apparatus further includes:
a third receiving module, configured to receive subscription cancellation information for canceling the subscription relationship, where the subscription cancellation information is sent by the data domain transmission platform after the status information is fed back to the data domain transmission platform according to the subscription relationship;
and the second processing module is used for feeding back cancellation confirmation information to the data domain transmission platform according to the subscription cancellation information and canceling the subscription relation between the second processing module and the data domain transmission platform.
Optionally, the second establishing module includes:
the second receiving submodule is used for receiving subscription request information sent by the data domain transmission platform;
and the first processing submodule is used for feeding back subscription confirmation information to the data domain transmission platform according to the subscription request information and establishing a subscription relation with the data domain transmission platform.
Optionally, the first feedback module includes:
the first trigger submodule is used for triggering a subscription notification according to the subscription relationship, wherein the subscription notification comprises the state information of the terminal;
and the second sending submodule is used for sending the subscription notification to the data domain transmission platform.
Optionally, the data transmission apparatus further includes:
the first paging module is used for paging the terminal to receive data when receiving a data sending notice before the subscription relation is established between the terminal and the data domain transmission platform;
and the third notification module is used for notifying the data domain transmission platform of paging failure when the response information fed back by the terminal according to the paging is not received.
The technical scheme of the invention has the following beneficial effects:
in the scheme, the data transmission method establishes a subscription relationship with a Mobility Management Entity (MME) currently serving the terminal, and receives a subscription notification triggered by the MME according to the subscription relationship, wherein the subscription notification comprises state information of the terminal; further, when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, the pre-cached data is sent to the terminal; the terminal can receive data in time, unnecessary interaction with an application layer is reduced, and efficiency is improved.
Drawings
Fig. 1 is a schematic flow chart of a data transmission method according to a first embodiment of the present invention;
fig. 2 is a schematic flow chart of a data transmission method according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a system architecture for implementing a data transmission method according to an embodiment of the present invention;
fig. 4 is a first flowchart illustrating a specific application of the data transmission method according to the embodiment of the present invention;
fig. 5 is a schematic diagram of a specific application flow of the data transmission method according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a data transmission device according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a data transmission device according to a fourth embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides various solutions for solving the problems of untimely data receiving and low efficiency of the terminal in the prior art, and the solutions are as follows:
example one
As shown in fig. 1, an embodiment of the present invention provides a data transmission method, which is applicable to a data domain transmission platform, where the data transmission method includes:
step 11: establishing a subscription relationship with a mobility management entity MME currently serving the terminal;
step 12: receiving a subscription notification triggered by the MME according to the subscription relationship, wherein the subscription notification comprises state information of the terminal;
step 13: and when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, sending the pre-cached data to the terminal.
The data transmission method provided by the embodiment of the invention establishes a subscription relationship with a Mobility Management Entity (MME) serving a terminal at present, and receives a subscription notification triggered by the MME according to the subscription relationship, wherein the subscription notification comprises state information of the terminal; further, when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, the pre-cached data is sent to the terminal; the terminal can receive data in time, unnecessary interaction with an application layer is reduced, and efficiency is improved.
In this embodiment, there may be multiple occasions when the subscription relationship is established, and two examples are provided here:
in a first example, the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal includes: and when the MME currently serving the terminal fails to page the terminal to receive data, establishing a subscription relationship with the MME.
Further, when the current MME serving the terminal fails to page the terminal to receive the data, the data transmission method further includes: and caching data to be issued to the terminal to form the pre-cached data.
In a second example, the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal includes: before sending data to the terminal, establishing a subscription relationship with a Mobility Management Entity (MME) currently serving the terminal.
Further, after the receiving the subscription notification triggered by the MME according to the subscription relationship, the data transmission method further includes: if data to be issued to the terminal exists and the state information indicates that the terminal cannot receive the data currently, caching the data to be issued to the terminal to form pre-cached data; and/or if data to be sent to the terminal exists and the state information indicates that the terminal can currently receive the data, sending the data to be sent to the terminal.
Further, in forming the pre-buffered data, the data transmission method further includes: notifying a third party application server AS of data transmission failure, wherein the third party AS is a server for transmitting preset data to the data domain transmission platform, and the preset data is data to be transmitted to the terminal;
after sending the pre-buffered data to the terminal, the data transmission method further includes: and informing the third party of successful data transmission.
In order to obtain an MME capable of querying the state information of the terminal, in this embodiment, before establishing a subscription relationship with the mobility management entity MME currently serving the terminal, the data transmission method further includes: acquiring identity information of a Mobility Management Entity (MME) currently serving a terminal through interaction with a Home Subscriber Server (HSS);
correspondingly, the step of establishing a subscription relationship with the mobility management entity MME currently serving the terminal includes: and establishing a subscription relationship with a Mobile Management Entity (MME) currently serving the terminal according to the identity information.
In order to save resources, in this embodiment, after the sending the pre-buffered data to the terminal, the data transmission method further includes: sending subscription cancellation information for canceling the subscription relationship to the MME; receiving cancellation confirmation information fed back by the MME according to the subscription cancellation information; and canceling the subscription relationship with the MME according to the cancellation confirmation information.
Specifically, the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal includes: sending subscription request information to the MME; receiving subscription confirmation information fed back by the MME according to the subscription request information; and establishing a subscription relation with a Mobile Management Entity (MME) currently serving the terminal according to the subscription confirmation information.
Therefore, the data transmission method provided by the embodiment of the invention can better solve the problems of untimely data receiving and low efficiency of the terminal in the prior art.
Example two
As shown in fig. 2, a second embodiment of the present invention provides a data transmission method, which is applicable to a mobility management entity MME, where the data transmission method includes:
step 21: establishing a subscription relationship with a data domain transmission platform;
step 22: acquiring state information of a terminal currently served by the MME;
step 23: and feeding back the state information to the data domain transmission platform according to the subscription relation.
In the data transmission method provided by the second embodiment of the present invention, a subscription relationship is established between the data domain transmission platform and the data domain transmission platform, and the state information of the terminal currently served by the MME is fed back to the data domain transmission platform according to the subscription relationship, so that the data domain transmission platform can send the pre-cached data to the terminal in time when the state information indicates that the terminal is changed from being unable to receive data to being able to receive data; the terminal can receive data in time, unnecessary interaction with an application layer is reduced, and efficiency is improved.
In order to save resources, in this embodiment, after the feeding back the state information to the data domain transmission platform according to the subscription relationship, the data transmission method further includes: receiving subscription canceling information for canceling the subscription relationship, which is sent by the data domain transmission platform; and feeding back cancellation confirmation information to the data domain transmission platform according to the subscription cancellation information, and canceling the subscription relation between the data domain transmission platform and the data domain transmission platform.
Specifically, the step of establishing a subscription relationship with the data domain transmission platform includes: receiving subscription request information sent by the data domain transmission platform; and feeding back subscription confirmation information to the data domain transmission platform according to the subscription request information, and establishing a subscription relation with the data domain transmission platform.
Wherein the step of feeding back the state information to the data domain transmission platform according to the subscription relationship comprises: triggering a subscription notification according to the subscription relationship, wherein the subscription notification comprises the state information of the terminal; and sending the subscription notification to the data domain transmission platform.
Further, before the subscription relationship is established with the data domain transmission platform, the data transmission method further includes: when receiving a data transmission notice, paging the terminal to receive data; and when the response information fed back by the terminal according to the paging is not received, the data domain transmission platform is notified that the paging is failed.
Therefore, the data transmission method provided by the embodiment of the invention can better solve the problems of untimely data receiving and low efficiency of the terminal in the prior art.
The data transmission method provided by the embodiment of the present invention is further described below with reference to a data domain transmission platform and two sides of a mobility management entity MME, where the data domain transmission platform is an internet of things platform as an example.
The data transmission method provided by the embodiment of the invention can be realized by adopting a system architecture as shown in fig. 3, and the system architecture mainly comprises three parts: the system comprises a terminal, a mobile network and platform and a third-party application server AS. The mobile network and platform comprise a base station eNode B, a Home Subscriber Server (HSS), a Mobility Management Entity (MME), a serving gateway (S-GW), a packet data gateway (P-GW) and an Internet of things platform; the Internet of things platform further comprises a service opening platform SCEF, a data storage and forwarding unit and other parts.
Wherein, the functions of each part are as follows:
eNode B: an Evolved Node B (Evolved Node B) having a main function including a radio resource management RRM function; network protocol IP header compression and user data stream encryption; MME selection when terminal UE is attached; scheduling transmission of paging information; scheduling transmission of broadcast information; and providing short message and packet domain data transmission.
MME: the main functions of the Mobility Management Entity (Mobility Management Entity) are to support network attached storage NAS signaling and its security, Management of Tracking Area (Tracking Area) lists, selection of P-GW and S-GW, selection of MME at handover across MMEs, selection of serving GPRS (general packet radio service) support node SGSN during handover to 2G/3G access system, authentication of user, roaming control and bearer Management, Mobility Management between core network nodes of 3GPP different access networks, and reachability Management (including control and execution of paging retransmission) of UE in ECM (EPC connectivity manager, evolved packet core network connection manager) -IDLE state (connection Management IDLE state).
S-GW: the Serving gateway (Serving GW) is a gateway terminating at the E-UTRAN interface of the evolved terrestrial radio access network, and the main functions of the apparatus include: when switching between eNodeBs is carried out, the local anchor point can be used as a local anchor point and assists in completing the reordering function of the eNodeBs; when switching among different access systems of 3GPP, the system is used as a mobility anchor point and also has a reordering function; performing a lawful interception function; routing and forwarding the data packet; grouping and marking are carried out on an uplink transmission layer and a downlink transmission layer; in idle state, the downlink packet buffer and the service request function triggered by the initiation network; for inter-operator charging, etc.
P-GW: packet data PDN gateway (PDN GW), P-GW is a gateway terminating PDN-oriented SGi interface (interface of P-GW with external, interface of connectivity platform), and if UE accesses multiple PDNs, UE will correspond to one or more P-GWs. The main functions of the P-GW include a user-based packet filtering function, a lawful interception function, an IP address allocation function of the UE, data packet transport layer marking in uplink/downlink, charging of uplink/downlink service levels and service level gating, control of uplink/downlink rates based on services, and the like. In addition, the P-GW also provides uplink/downlink bearer binding and uplink binding checking functions.
HSS: a Home Subscriber Server (HSS) is a central database that contains Subscriber information for all network operators.
The Internet of things platform: providing the data store-and-forward function and providing the terminal status capability, such as whether the terminal is on-line or not.
SCEF: the service opening platform mainly has the function of providing information of some terminals, such AS terminal positions, terminal accessibility, terminal session capabilities (such AS terminal IP addresses) and the like, for the third-party AS.
A third party AS: application Server (AS) of various applications.
For the above two examples of the timing of establishing the subscription relationship, two specific applications are provided:
a first specific application, as shown in fig. 4, comprises:
step 41: if the network has downlink data to be issued, the third-party AS issues the data to the Internet of things platform;
step 42: the Internet of things platform issues the data to the P-GW;
step 43: the P-GW sends down data notice to the S-GW;
step 44: S-GW sends paging message to MME;
step 45: the MME sends down a paging message to page the UE;
step 46: after a period of time, the MME does not receive the paging response message, and the S-GW sends the non-received response message to the P-GW;
step 47: the P-GW replies to the Internet of things platform to inform that the paging fails;
and 48: the Internet of things platform caches downlink data through the data storage and forwarding unit;
step 49: optionally, the internet of things platform notifies a third party AS of a failure indication of downlink data transmission;
step 410: the data storage forwarding unit initiates a subscription to the service opening platform SCEF, where the subscription includes subscription content (such as terminal online and offline state) and a terminal identifier, where the terminal identifier may be a terminal IP address or other terminal identifiers, such as an international mobile subscriber identity IMSI;
step 411: the SCEF initiates a subscription to the MME, where the subscription includes subscribed content (such as a terminal online/offline state, etc.) and a terminal identifier, where the terminal identifier may be a terminal IP address or other terminal identifiers, such as an IMSI, etc.; specifically, the SCEF finds the MME by acquiring the identifier of the current MME (the MME is changed by the terminal mobility and the current MME is the MME currently serving the terminal) through interaction with the HSS, so that the MME can be found; ensuring that the UE state can be queried, i.e. letting the MME know to subscribe;
step 412: the MME replies a subscription confirmation to the SCEF;
step 413: the SCEF replies a subscription confirmation to the data storage and forwarding unit;
step 414: the MME and the SCEF carry out terminal state change interaction, if a subscription notification is triggered, if the subscription is in an online and offline state of the terminal, when the terminal state changes, the MME notifies the SCEF of the current terminal state;
step 415: the SCEF and the data storage and forwarding unit carry out terminal state change interaction, such as the terminal changes from a dormant off-line state to an on-line state;
step 416: if the data storage and forwarding unit finds that the terminal is on-line, the data storage and forwarding unit sends downlink data to the P-GW;
step 417: the P-GW sends the downlink data to the UE;
the following steps 418-424 are optional:
step 418: the terminal receives data and then confirms data reception to the P-GW;
step 419: the P-GW sends a data receiving confirmation to the data storage and forwarding unit;
step 420: the data storage and forwarding unit sends the data receiving confirmation to a third party AS;
step 421: after the data transmission is finished, the data storage and forwarding unit transmits subscription cancellation to the SCEF, and the subscription cancellation is carried out;
step 422: the SCEF sends a subscription cancellation to the MME, and the subscription cancellation is carried out;
step 423: the MME replies a subscription cancellation confirmation to the SCEF;
step 424: and the SCEF replies a subscription cancellation confirmation to the data storage and forwarding unit to complete the subscription cancellation.
Here, the interaction between the execution agent such as MME and P-GW on the network side and the terminal needs to be performed by the base station, and the base station in this embodiment mainly plays a role of forwarding, and therefore is not shown in the above flow.
A second specific application, as shown in fig. 5, comprises:
step 51: optionally, a third party AS initiates subscription to an Internet of things platform;
step 52: the data storage forwarding unit initiates a subscription to the service opening platform SCEF, where the subscription includes subscription content (such as terminal online and offline state) and a terminal identifier, and the terminal identifier may be a terminal IP address or other terminal identifiers, such as IMSI and the like;
step 53: the SCEF initiates a subscription to the MME, where the subscription includes subscription content (such as a terminal online/offline state) and a terminal identifier, where the terminal identifier may be a terminal IP address or other terminal identifiers, such as an IMSI, and the SCEF finds the MME and may find the MME by obtaining the identifier of the current MME through interaction with the HSS;
step 54: the MME replies a subscription confirmation to the SCEF;
step 55: the SCEF replies a subscription confirmation to the data storage and forwarding unit;
step 56: the optional data storage and forwarding unit sends a subscription confirmation to a third-party AS;
and 57: if the subscription notification is triggered, if the subscription is in the online and offline state of the terminal, when the state of the terminal changes, the MME notifies the SCEF of the current state of the terminal;
step 58: the SCEF and the data storage and forwarding unit carry out terminal state change interaction, such as the terminal changes from a dormant off-line state to an on-line state;
step 59: if the downlink data are sent, the third party AS sends the downlink data to the Internet of things platform;
step 510 a: if the data storage and forwarding unit knows that the state of the terminal is offline at the moment, sending a sending failure indication that the terminal is offline to a third-party data platform, storing the data by the data storage and forwarding unit, and performing the same downlink data sending process as the step 416-step 424 in the first specific application after the subsequent terminal state changes;
step 510 b: if the terminal is on line, the data storage and forwarding unit sends downlink data to the P-GW;
step 511: the P-GW sends downlink data to the UE;
step 512: the optional terminal receives data and then confirms data reception to the P-GW;
step 513: optional P-GW sends data receiving confirmation to data storage and forwarding unit;
step 514: and the optional data storage and forwarding unit sends the data receiving confirmation to the third-party AS.
Here, the interaction between the execution agent such as MME and P-GW on the network side and the terminal needs to be performed by the base station, and the base station in this embodiment mainly plays a role of forwarding, and therefore is not shown in the above flow.
Therefore, the scheme provided by the embodiment of the invention can enable the terminal to receive the data in time when the terminal can receive the downlink data, reduce useless interaction between the terminal and the application layer and improve the efficiency.
EXAMPLE III
As shown in fig. 6, a third embodiment of the present invention provides a data transmission apparatus, which is applicable to a data domain transmission platform, where the data transmission apparatus includes:
a first establishing module 61, configured to establish a subscription relationship with a mobility management entity MME currently serving the terminal;
a first receiving module 62, configured to receive a subscription notification triggered by the MME according to the subscription relationship, where the subscription notification includes state information of the terminal;
a first sending module 63, configured to send the pre-buffered data to the terminal when the status information indicates that the terminal changes from being unable to receive data to being able to receive data.
The data transmission device provided by the third embodiment of the invention establishes a subscription relationship with a mobility management entity MME currently serving a terminal, and receives a subscription notification triggered by the MME according to the subscription relationship, wherein the subscription notification comprises state information of the terminal; further, when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, the pre-cached data is sent to the terminal; the terminal can receive data in time, unnecessary interaction with an application layer is reduced, and efficiency is improved.
The first sending module 63 may specifically be configured to: and sending the cache data to the terminal through a packet data gateway P-GW.
In this embodiment, there may be multiple occasions when the subscription relationship is established, and two examples are provided here:
in a first example, the first establishing module comprises: the first establishing submodule is used for establishing a subscription relationship with the MME when the current paging of the terminal serving the MME for the terminal fails to receive data.
Further, the data transmission apparatus further includes: and the first caching module is used for caching data to be issued to the terminal when the MME fails to page the terminal to receive the data, so as to form the pre-cached data.
In a second example, the first establishing module comprises: and the second establishing submodule is used for establishing a subscription relationship with a Mobility Management Entity (MME) serving the terminal at present before sending data to the terminal.
Further, the data transmission apparatus further includes: a first processing module, configured to, after receiving the subscription notification triggered by the MME according to the subscription relationship, if there is data to be delivered to the terminal and the state information indicates that the terminal cannot currently receive the data, cache the data to be delivered to the terminal to form the pre-cached data; and/or if data to be sent to the terminal exists and the state information indicates that the terminal can currently receive the data, sending the data to be sent to the terminal.
Further, the data transmission apparatus further includes: the first notification module is used for notifying a third-party application server AS of data transmission failure when the pre-cached data is formed, wherein the third-party AS is a server for transmitting preset data to the data domain transmission platform, and the preset data is data to be transmitted to the terminal;
the data transmission apparatus further includes: and the second notification module is used for notifying the third party of successful data transmission after the pre-cached data is transmitted to the terminal.
In order to obtain an MME capable of querying the state information of the terminal, in this embodiment, the data transmission apparatus further includes: a first obtaining module, configured to, before establishing a subscription relationship with a mobility management entity MME currently serving a terminal, obtain identity information of the mobility management entity MME currently serving the terminal through interaction with a home subscriber server HSS;
correspondingly, the first establishing module comprises: and the third establishing submodule is used for establishing a subscription relation between the identity information and a Mobility Management Entity (MME) serving the terminal currently.
In order to save resources, in this embodiment, the data transmission apparatus further includes: a second sending module, configured to send, to the MME, subscription cancellation information for canceling the subscription relationship after the pre-cached data is sent to the terminal; a second receiving module, configured to receive cancellation confirmation information fed back by the MME according to the subscription cancellation information; and the first cancelling module is used for cancelling the subscription relationship with the MME according to the cancellation confirmation information.
Specifically, the first establishing module includes: a first sending submodule, configured to send subscription request information to the MME; a first receiving submodule, configured to receive subscription confirmation information fed back by the MME according to the subscription request information; and the fourth establishing submodule is used for establishing a subscription relation with a Mobile Management Entity (MME) serving the terminal currently according to the subscription confirmation information.
The implementation embodiments of the data transmission method related to the data domain transmission platform side are all applicable to the embodiment of the data transmission device, and the same technical effects can be achieved.
Therefore, the data transmission device provided by the embodiment of the invention can better solve the problems of untimely data receiving and low efficiency of the terminal in the prior art.
Example four
As shown in fig. 7, a fourth embodiment of the present invention provides a data transmission apparatus, which is applicable to a mobility management entity MME, and the data transmission apparatus includes:
a second establishing module 71, configured to establish a subscription relationship with the data domain transmission platform;
a second obtaining module 72, configured to obtain state information of a terminal currently served by the MME;
a first feedback module 73, configured to feed back the state information to the data domain transmission platform according to the subscription relationship.
The data transmission device provided by the fourth embodiment of the invention establishes a subscription relationship with the data domain transmission platform, and feeds back the state information of the terminal currently served by the MME to the data domain transmission platform according to the subscription relationship, so that the data domain transmission platform can send the pre-cached data to the terminal in time when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data; the terminal can receive data in time, unnecessary interaction with an application layer is reduced, and efficiency is improved.
In order to save resources, in this embodiment, the data transmission apparatus further includes: a third receiving module, configured to receive subscription cancellation information for canceling the subscription relationship, where the subscription cancellation information is sent by the data domain transmission platform after the status information is fed back to the data domain transmission platform according to the subscription relationship; and the second processing module is used for feeding back cancellation confirmation information to the data domain transmission platform according to the subscription cancellation information and canceling the subscription relation between the second processing module and the data domain transmission platform.
Specifically, the second establishing module includes: the second receiving submodule is used for receiving subscription request information sent by the data domain transmission platform; and the first processing submodule is used for feeding back subscription confirmation information to the data domain transmission platform according to the subscription request information and establishing a subscription relation with the data domain transmission platform.
Wherein the first feedback module comprises: the first trigger submodule is used for triggering a subscription notification according to the subscription relationship, wherein the subscription notification comprises the state information of the terminal; and the second sending submodule is used for sending the subscription notification to the data domain transmission platform.
Further, the data transmission apparatus further includes: the first paging module is used for paging the terminal to receive data when receiving a data sending notice before the subscription relation is established between the terminal and the data domain transmission platform; and the third notification module is used for notifying the data domain transmission platform of paging failure when the response information fed back by the terminal according to the paging is not received.
The implementation embodiments of the data transmission method related to the mobility management entity MME side are all applicable to the embodiment of the data transmission apparatus, and the same technical effects can be achieved.
Therefore, the data transmission device provided by the embodiment of the invention can better solve the problems of untimely data receiving and low efficiency of the terminal in the prior art.
It should be noted that many of the functional components described in this specification are referred to as modules/sub-modules in order to more particularly emphasize their implementation independence.
In embodiments of the invention, the modules/sub-modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (30)
1. A data transmission method is applied to a data domain transmission platform and is characterized by comprising the following steps:
establishing a subscription relationship with a mobility management entity MME currently serving the terminal;
receiving a subscription notification triggered by the MME according to the subscription relationship, wherein the subscription notification comprises state information of the terminal;
and when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data, sending the pre-cached data to the terminal.
2. The data transmission method according to claim 1, wherein the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal comprises:
and when the MME currently serving the terminal fails to page the terminal to receive data, establishing a subscription relationship with the MME.
3. The data transmission method according to claim 2, wherein when paging of the terminal by the MME currently serving the terminal fails to receive data, the data transmission method further comprises:
and caching data to be issued to the terminal to form the pre-cached data.
4. The data transmission method according to claim 1, wherein the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal comprises:
before sending data to the terminal, establishing a subscription relationship with a Mobility Management Entity (MME) currently serving the terminal.
5. The data transmission method according to claim 4, wherein after the receiving the subscription notification triggered by the MME according to the subscription relationship, the data transmission method further comprises:
if data to be issued to the terminal exists and the state information indicates that the terminal cannot receive the data currently, caching the data to be issued to the terminal to form pre-cached data; and/or
And if the data to be issued to the terminal exist and the state information indicates that the terminal can receive the data currently, the data to be issued to the terminal is sent to the terminal.
6. The data transmission method according to claim 3 or 5, wherein in forming the pre-buffered data, the data transmission method further comprises:
and informing a third party Application Server (AS) of data transmission failure, wherein the third party AS is a server for transmitting preset data to the data domain transmission platform, and the preset data is data to be transmitted to the terminal.
7. The data transmission method according to claim 6, wherein after sending the pre-buffered data to the terminal, the data transmission method further comprises:
and informing the third party of successful data transmission.
8. The data transmission method according to claim 1, wherein before the subscription relationship is established with a mobility management entity MME currently serving the terminal, the data transmission method further comprises:
acquiring identity information of a Mobility Management Entity (MME) currently serving a terminal through interaction with a Home Subscriber Server (HSS);
the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal comprises the following steps:
and establishing a subscription relationship with a Mobile Management Entity (MME) currently serving the terminal according to the identity information.
9. The data transmission method according to claim 1, wherein after the sending the pre-buffered data to the terminal, the data transmission method further comprises:
sending subscription cancellation information for canceling the subscription relationship to the MME;
receiving cancellation confirmation information fed back by the MME according to the subscription cancellation information;
and canceling the subscription relationship with the MME according to the cancellation confirmation information.
10. The data transmission method according to claim 1, wherein the step of establishing a subscription relationship with a mobility management entity MME currently serving the terminal comprises:
sending subscription request information to the MME;
receiving subscription confirmation information fed back by the MME according to the subscription request information;
and establishing a subscription relation with a Mobile Management Entity (MME) currently serving the terminal according to the subscription confirmation information.
11. A data transmission method is applied to a Mobility Management Entity (MME), and is characterized by comprising the following steps:
establishing a subscription relationship with a data domain transmission platform;
acquiring state information of a terminal currently served by the MME;
and feeding back the state information to the data domain transmission platform according to the subscription relation, so that the data domain transmission platform can send pre-cached data to the terminal when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data.
12. The data transmission method according to claim 11, wherein after the feeding back the status information to the data domain transmission platform according to the subscription relationship, the data transmission method further comprises:
receiving subscription canceling information for canceling the subscription relationship, which is sent by the data domain transmission platform;
and feeding back cancellation confirmation information to the data domain transmission platform according to the subscription cancellation information, and canceling the subscription relation between the data domain transmission platform and the data domain transmission platform.
13. The data transmission method according to claim 11, wherein the step of establishing a subscription relationship with the data domain transmission platform comprises:
receiving subscription request information sent by the data domain transmission platform;
and feeding back subscription confirmation information to the data domain transmission platform according to the subscription request information, and establishing a subscription relation with the data domain transmission platform.
14. The data transmission method according to claim 11, wherein the step of feeding back the status information to the data domain transmission platform according to the subscription relationship comprises:
triggering a subscription notification according to the subscription relationship, wherein the subscription notification comprises the state information of the terminal;
and sending the subscription notification to the data domain transmission platform.
15. The data transmission method according to claim 11, wherein before the subscription relationship is established with the data domain transmission platform, the data transmission method further comprises:
when receiving a data transmission notice, paging the terminal to receive data;
and when the response information fed back by the terminal according to the paging is not received, the data domain transmission platform is notified that the paging is failed.
16. A data transmission device is applied to a data domain transmission platform and is characterized by comprising:
a first establishing module, configured to establish a subscription relationship with a mobility management entity MME currently serving a terminal;
a first receiving module, configured to receive a subscription notification triggered by the MME according to the subscription relationship, where the subscription notification includes state information of the terminal;
and the first sending module is used for sending the pre-cached data to the terminal when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data.
17. The data transmission apparatus of claim 16, wherein the first establishing module comprises:
the first establishing submodule is used for establishing a subscription relationship with the MME when the MME serving the terminal at present fails to page the terminal to receive data.
18. The data transmission apparatus of claim 17, wherein the data transmission apparatus further comprises:
and the first caching module is used for caching data to be issued to the terminal when the MME fails to page the terminal to receive the data, so as to form the pre-cached data.
19. The data transmission apparatus of claim 16, wherein the first establishing module comprises:
and the second establishing submodule is used for establishing a subscription relationship with a Mobility Management Entity (MME) serving the terminal at present before sending data to the terminal.
20. The data transmission apparatus of claim 19, wherein the data transmission apparatus further comprises:
a first processing module, configured to, after receiving the subscription notification triggered by the MME according to the subscription relationship, if there is data to be delivered to the terminal and the state information indicates that the terminal cannot currently receive the data, cache the data to be delivered to the terminal to form the pre-cached data; and/or
And if the data to be issued to the terminal exist and the state information indicates that the terminal can receive the data currently, the data to be issued to the terminal is sent to the terminal.
21. The data transmission apparatus according to claim 18 or 20, characterized in that the data transmission apparatus further comprises:
the first notification module is used for notifying a third-party application server AS of data transmission failure when the pre-cached data is formed, wherein the third-party AS is a server for transmitting preset data to the data domain transmission platform, and the preset data is data to be transmitted to the terminal.
22. The data transmission apparatus of claim 21, wherein the data transmission apparatus further comprises:
and the second notification module is used for notifying the third party of successful data transmission after the pre-cached data is transmitted to the terminal.
23. The data transmission apparatus of claim 16, wherein the data transmission apparatus further comprises:
the first acquisition module is used for acquiring the identity information of the current mobile management entity MME serving the terminal through interaction with a home subscriber server HSS before the subscription relationship is established between the first acquisition module and the current mobile management entity MME serving the terminal;
the first establishing module comprises:
and the third establishing submodule is used for establishing a subscription relation between the identity information and a Mobility Management Entity (MME) serving the terminal currently.
24. The data transmission apparatus of claim 16, wherein the data transmission apparatus further comprises:
a second sending module, configured to send, to the MME, subscription cancellation information for canceling the subscription relationship after the pre-cached data is sent to the terminal;
a second receiving module, configured to receive cancellation confirmation information fed back by the MME according to the subscription cancellation information;
and the first cancelling module is used for cancelling the subscription relationship with the MME according to the cancellation confirmation information.
25. The data transmission apparatus of claim 16, wherein the first establishing module comprises:
a first sending submodule, configured to send subscription request information to the MME;
a first receiving submodule, configured to receive subscription confirmation information fed back by the MME according to the subscription request information;
and the fourth establishing submodule is used for establishing a subscription relation with a Mobile Management Entity (MME) serving the terminal currently according to the subscription confirmation information.
26. A data transmission device is applied to a Mobility Management Entity (MME), and is characterized by comprising:
the second establishing module is used for establishing a subscription relationship with the data domain transmission platform;
a second obtaining module, configured to obtain state information of a terminal currently served by the MME;
the first feedback module is configured to feed back the state information to the data domain transmission platform according to the subscription relationship, so that the data domain transmission platform can send pre-cached data to the terminal when the state information indicates that the terminal is changed from being incapable of receiving data to being capable of receiving data.
27. The data transmission apparatus of claim 26, wherein the data transmission apparatus further comprises:
a third receiving module, configured to receive subscription cancellation information for canceling the subscription relationship, where the subscription cancellation information is sent by the data domain transmission platform after the status information is fed back to the data domain transmission platform according to the subscription relationship;
and the second processing module is used for feeding back cancellation confirmation information to the data domain transmission platform according to the subscription cancellation information and canceling the subscription relation between the second processing module and the data domain transmission platform.
28. The data transmission apparatus of claim 26, wherein the second establishing module comprises:
the second receiving submodule is used for receiving subscription request information sent by the data domain transmission platform;
and the first processing submodule is used for feeding back subscription confirmation information to the data domain transmission platform according to the subscription request information and establishing a subscription relation with the data domain transmission platform.
29. The data transmission apparatus of claim 26, wherein the first feedback module comprises:
the first trigger submodule is used for triggering a subscription notification according to the subscription relationship, wherein the subscription notification comprises the state information of the terminal;
and the second sending submodule is used for sending the subscription notification to the data domain transmission platform.
30. The data transmission apparatus of claim 26, wherein the data transmission apparatus further comprises:
the first paging module is used for paging the terminal to receive data when receiving a data sending notice before the subscription relation is established between the terminal and the data domain transmission platform;
and the third notification module is used for notifying the data domain transmission platform of paging failure when the response information fed back by the terminal according to the paging is not received.
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