CN117545013A - Data transmission method, device, electronic equipment, storage medium and program product - Google Patents

Abstract

The invention discloses a data transmission method, a data transmission device, an electronic device, a storage medium and a program product. Wherein the method comprises the following steps: determining at least one first identification information from the data transmission request in response to the data transmission request, wherein the first identification information is used for identifying user equipment for data to be transmitted; determining second identification information associated with the first identification information; and transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same. The invention solves the technical problem of resource waste in the data transmission process.

Description

Data transmission method, device, electronic equipment, storage medium and program product

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a data transmission method, apparatus, electronic device, storage medium, and program product.

Background

Currently, for the transmission of data to be transmitted in the fifth generation mobile communication technology (Fifth Generation Mobile Network, abbreviated as 5G) scenario, each ue generally needs to call the same data transmission service to its session management function. When the user equipment may be anchored to the same session management function, different user equipment may send a plurality of same service operations and the same data to be transmitted to the same session management function, thereby causing a technical problem of resource waste in a data processing process.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the invention provides a data transmission method, a device, electronic equipment, a storage medium and a program product, which are used for at least solving the technical problem of resource waste in the data transmission process.

According to an aspect of an embodiment of the present invention, there is provided a data transmission method. The method may include: determining at least one first identification information from the data transmission request in response to the data transmission request, wherein the first identification information is used for identifying user equipment for data to be transmitted; determining second identification information associated with the first identification information; and transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

Optionally, in response to the data transmission request, determining at least one first identification information from the data transmission request includes: responding to a data transmission request, and acquiring session information corresponding to user equipment; first identification information is determined from the session information.

Optionally, determining the second identification information associated with the first identification information includes: classifying at least one user equipment based on the first identification information to obtain at least one user equipment group, wherein the first identification information of different user equipment in the user equipment group is the same; selecting a target equipment group from at least one user equipment group; second identification information associated with the first identification information of the target device group is determined.

Optionally, based on the second identification information, the session management function sequentially transmits the data to be transmitted to a plurality of target user equipments in the target user equipment group.

Optionally, the method may further include: and responding to the data transmission request, and storing the data to be transmitted of the target device group.

Optionally, the method may further include: responding to the end of the data transmission to be transmitted, and acquiring an end instruction sent by a session management function; or in response to the end of the data transmission to be transmitted and the expiration of the timer of the session management function, periodically acquiring an end instruction sent by the session management function.

According to another aspect of the embodiment of the invention, a data transmission device is also provided. The apparatus may include: a first determining unit, configured to determine at least one first identification information from the data transmission request in response to the data transmission request, where the first identification information is used to identify a user equipment to which data is to be transmitted; a second determination unit configured to determine second identification information associated with the first identification information; and the transmission unit is used for transmitting the first identification information and the data to be transmitted to the session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

According to another aspect of the embodiments of the present invention, there is also provided a nonvolatile storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the method of transmitting data of any one of the above.

According to another aspect of the embodiments of the present invention, there is further provided an electronic device including one or more processors and a memory, where the memory is configured to store one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement any one of the data transmission methods.

In the embodiment of the invention, at least one piece of first identification information is determined from a data transmission request in response to the data transmission request, wherein the first identification information is used for identifying user equipment for data to be transmitted; determining second identification information associated with the first identification information; and transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same. That is, in the embodiment of the invention, the second identification information associated with the first identification information of the user equipment is determined, and based on the second identification information, the session management function is directly called to transmit data to the user equipment with the same first identification, so that the need of repeatedly calling the same session management function to transmit data to be transmitted to a plurality of user equipment is avoided, the technical effect of avoiding resource waste in the data transmission process is realized, and the technical problem of resource waste in the data transmission process is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a flow chart of a method of transmitting data according to an embodiment of the invention;

FIG. 2 is a flow diagram of mobile terminated data transmission in control plane optimization according to an embodiment of the present invention;

FIG. 3 is a flow diagram of Group-identified sessions in NEF anchored to the same SMF scene in accordance with an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

According to an embodiment of the present invention, there is provided an embodiment of a data transmission method, it should be noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases the steps shown or described may be performed in an order different from that herein.

Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention, as shown in fig. 1, the method includes the steps of:

step S102, at least one first identification information is determined from the data transmission request in response to the data transmission request, wherein the first identification information is used for identifying the user equipment to which the data is to be transmitted.

In this embodiment, if an application function (Application Function, abbreviated AF) wants to transmit data to be transmitted into the network to send to the user equipment, a data transmission request may be sent. A network exposure function (Network Exposure Function, simply NEF) obtains the data transfer request and determines at least one first identification information from the data transfer request in response to the data transfer request. The data transmission Request may be an "nnef_nidd_delivery Request" sent by the AF, and may be used to Request that ready data to be transmitted be delivered to the network. The Data to be transmitted may be Data which does not conform to the internet protocol (Internet Protocol, abbreviated as IP) standard, non-IP Data Delivery (NIDD) Data, unstructured Data, or downlink Data. The NEF may be a functional unit in the 5G network architecture, for exposing network functions and data to be transmitted externally. A User Equipment (UE) may be a terminal device for connecting to a mobile network, such as a mobile phone or a computer. The first identification information may be Group identity information (Group ID) corresponding to the ue, and may be used to determine a Group in which the ue is located.

Alternatively, if the AF has used NIDD configuration procedures to activate NIDD services for a Group of UEs and has unstructured data to be sent to the Group identified by the external Group Identifier, the AF sends an nnef_nidd_delivery Request to the NEF, wherein the data transmission Request includes the Group Identifier, TLTRI, unstructured data (unstructured data) of the user equipment, reliable data service configuration (Reliable Data Service Configuration), etc. messages. Wherein Reliable Data Service Configuration is an optional parameter for configuring reliable data services. When unstructured data is sent to the Group Identifier, the AF needs to request an acknowledgement in Reliable Data Service Configuration.

Step S104, determining second identification information associated with the first identification information.

In this embodiment, there is an association between the first identification information and the second identification information, and after the first identification information is determined, the second identification information associated with the first identification information may be determined based on the association. The second identification information may be an ID of a session management function (Subscriber Management Function is simply referred to as SMF) and may be used to determine the session management function to be invoked. Session management functions may include a localized SMF (virtual-SMF, abbreviated as V-SMF) of the user equipment and a Home SMF (Home-SMF, abbreviated as H-SMF) of the user.

Optionally, the NEF generates a response Request (nsmf_nidd_delivery Request) in response to the data transmission Request. Second identification information (SMF ID) associated with the first identification information may be acquired, and a response request of SMF granularity may be sent to H-SMF corresponding to the SMF ID. If during SMF-NEF connection establishment NEF indicates support for extended buffering in the Nnef_SMContext_CreatResponse, NEF may only keep a copy of the data to be transmitted for these H-SMFs (S).

For example, the NEF may obtain the second identification information (SMFID) by querying the general data model (Universal Data Model, abbreviated as UDM) for the corresponding UE identity (i.e., the first identification information) and the SMF information, which is only illustrated herein, and the manner of obtaining the second identification information is not specifically limited.

Step S106, the first identification information and the data to be transmitted are transmitted to the session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to the target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

In this embodiment, a session management function for transmitting data to be transmitted is determined based on the second identification information. The first identification information and the data to be transmitted may be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment. Wherein the first identification information of different target user equipments in the target user equipment group is the same.

During the NEF-SMF interaction (NEF- > SMF), each UE needs to invoke the same Nsmf_NIDDED_Delivery Request service operation to its SMF. While these UEs may be anchored to the same SMF, i.e. different UEs send multiple identical service operations and identical downlink data to the same SMF, these signaling differ only in the UE information carried and the protocol data unit Session (Protocol Data Unit Session, abbreviated PDU Session), in this method, however, the same SMF has the technical problem of repeated calls. In order to solve the above problems, in this embodiment, the first identification information of the user equipment is preset, and the user equipment is grouped by using the first identification information, so that when data transmission is performed, the SMF can be invoked to transmit data to the target user equipment in the same group, thereby avoiding repeated invocation of the SMF, realizing the technical effect of improving the data transmission efficiency, and solving the technical problem of low data transmission efficiency.

Optionally, in a scenario that the NEF sends downlink NIDD data to the plurality of UEs, when the NEF receives a downlink data sending request sent by the AF to the plurality of UEs, the NEF invokes a service operation to each SMF selected by the UE corresponding to the session, and starts unicast downlink data transmission from the SMF again. When the NEF sends downlink NIDD to a plurality of UEs belonging to the same SMF, the SMF may be invoked to transmit data to a plurality of target UEs in the target UE group, so as to avoid saving the same NIDD data of the number of UEs in the NEF, and save the storage resources on the NEF device.

Determining at least one first identification information from the data transmission request in response to the data transmission request through the steps S102 to S106, wherein the first identification information is used for identifying the user equipment to which the data is to be transmitted; determining second identification information associated with the first identification information; and transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same. That is, in the embodiment of the invention, the second identification information associated with the first identification information of the user equipment is determined, and based on the second identification information, the session management function is directly called to transmit data to the user equipment with the same first identification, so that the need of repeatedly calling the same session management function to transmit data to be transmitted to a plurality of user equipment is avoided, the technical effect of avoiding resource waste in the data transmission process is realized, and the technical problem of resource waste in the data transmission process is solved.

The above-described method of this embodiment is further described below.

As an optional embodiment, step S102, in response to the data transmission request, determines at least one first identification information from the data transmission request, including: responding to a data transmission request, and acquiring session information corresponding to user equipment; first identification information is determined from the session information.

In this embodiment, after receiving the data transmission request, in response to the data transmission request, the call-back information corresponding to the user equipment may be obtained from the data transmission request, and the first identification information may be determined from the session information. The call back information may be a data network name (Data Network Name, abbreviated DNN) and may be used to identify and manage the mechanisms of the different data networks.

Optionally, each data network will have a unique DNN in the 5G network to identify and distinguish among the networks. The DNN mechanism may assist the network in traffic management, policy formulation, and security control, as well as supporting network slicing and providing different quality of service.

Optionally, in response to the data transmission request, the NEF determines a quality of service flow (5G standby, abbreviated as 5GS QoS) flow context in the 5GS network of all UEs contained in the Group ID based on the DNN associated with the NIDD configuration and the user equipment. The 5GS QoS flow context of the NEF corresponding to the identity (Generic Public Subscription Identifier, abbreviated as GPSI) contained in all groups is searched, and if the QoS flow context of the contained GPSI is found, the NEF checks whether the AF is authorized to send data, and whether it does not exceed its quota or rate. Further, the NEF obtains DNN sessions corresponding to the GPSIs, and from the DNN call back, may obtain first identification information determined by the user equipment during registration, and the SMF ID, and may send an nsmf_nidd_delivery Request of SMF granularity to the H-SMF corresponding to the SMF ID. If during SMF-NEF connection establishment NEF indicates support for extended buffering in the Nnef_SMContext_Create Response, NEF retains only one copy of the data to be transmitted for these H-SMFs (S).

As an optional embodiment, step S104, optionally, determines second identification information associated with the first identification information, including: classifying at least one user equipment based on the first identification information to obtain at least one user equipment group, wherein the first identification information of different user equipment in the user equipment group is the same; selecting a target equipment group from at least one user equipment group; second identification information associated with the first identification information of the target device group is determined.

In this embodiment, at least one user equipment may be classified based on the first identification information to obtain at least one user equipment group, a target equipment group may be selected from the at least one user equipment group, and second identification information associated with the first identification information of the first target equipment group may be determined. Wherein the first identification information of different user equipments in the user equipment group is the same.

Optionally, the user equipment is classified in advance based on the first identification information of the plurality of user equipment, and the users with the same first identification information are grouped into one group, so as to obtain at least one user equipment group. When the data transmission request is acquired, first identification information in the data transmission request can be determined, and the target device group is selected from at least one user device based on the first identification information in the data transmission request. And determining second identification information associated with the first identification information of the target device group. The session management function may be further invoked to transmit data to be transmitted to a target user device in the target device group.

According to the embodiment, after the NEF receives the AF request, if the NEF needs to buffer, only one part of downlink data buffer in the Group can be buffered in the NEF, so that the problem of repeated transmission of the same data is solved, and the technical problem of reducing data consumption in the data transmission process is solved.

As an alternative embodiment, the method further comprises: the session management function transmits data to be transmitted to a plurality of target user equipments in the target user equipment group in turn.

In this embodiment, the session management function corresponding to the second identification information may be triggered to sequentially transmit the data to be transmitted to a plurality of target user devices in the target user device group.

Optionally, the NEF invokes a service operation to each SMF of the UE corresponding to the session selection, and restarts unicast downlink data transmission from the SMF.

As an alternative embodiment, the method may further include: and responding to the data transmission request, and storing the data to be transmitted of the target device group.

In this embodiment, after receiving the data transmission request of the AF, if buffering is required, the NEF only buffers a part of the downlink data buffer in the Group, that is, only needs to store the data to be transmitted of the target device Group, thereby achieving the purpose of reducing the memory loss in the data transmission process.

As an alternative embodiment, the method may further include: responding to the end of the data transmission to be transmitted, and acquiring an end instruction sent by a session management function; or in response to the end of the data transmission to be transmitted and the expiration of the timer of the session management function, periodically acquiring an end instruction sent by the session management function.

In this embodiment, the end instruction sent by the session management function may be acquired in response to the end of the data transmission to be transmitted, or the end instruction sent by the session management function may be acquired at fixed time in response to the end of the data transmission to be transmitted and the timer of the session management function expires.

Optionally, the SMF sets a timer for defining receipt of an indication of completion of the downlink data transmission. That is, after the SMF completes the downlink transmission of the data to be transmitted, or the SMF expires, the SMF may feed back the transmission results of the plurality of UEs (if any) thereof to the SMF, and the SMF may transmit the final transmission result to the NEF.

For example, the NEF transmits data to be transmitted to the H-SMF, and in case of roaming, the H-SMF transmits data to be transmitted including small data (Mobile Terminated Small Data, abbreviated as MT) to the V-SMF. Wherein, the small data can be represented by Nsmf_PDUSion_TransferMTData. The V-SMF determines whether to apply extension buffering based on a local policy and based on whether the NEF has indicated support for extension buffering in the Nnef smcontext_create Response during SMF-NEF connection setup. If header compression is applied, the V-SMF compresses the header and forwards the data and PDU session ID to the AMF using a service operation (e.g., namf_communication_N1N2MessageTransfer).

If extended buffering is applicable, the V-SMF includes an "extended buffer bearer (Extended Buffering support)" indication in the Namf_communication_N1N2message transmission. If the AMF determines that the UE is not reachable by the SMF, e.g., if the UE is in a multimedia communication services and internet integrated-oriented Operating System (MICO) mode or an extended idle mode in which the UE is configured for discontinuous reception (Discontinuous Reception, DRX) the AMF denies the request from the SMF. If the SMF is not subscribed to the UE reachability event, the AMF may include an indication in the rejection message that the SMF does not need to trigger a response to the AMF (e.g., a Namf_communication_N1N MessageTransfer Request indication). If the SMF includes an extended buffer support indication, the AMF instructs the SMF in a reject message to determine an estimated maximum wait time for the extended buffer time. If the UE is in the MICO mode, the AMF determines the estimated maximum latency based on the expiration of the next expected periodic registration timer update or by implementation. If the UE is configured for extended idle mode DRX, the AMF determines an estimated maximum latency based on the start of the next paging time window. The AMF stores an indication that the SMF has been told that the UE is not reachable. In the roaming case, the V-SMF sends an nsmf_pduse_transfer MTData (Result Indication) response to the H-SMF. If the V-SMF receives the "estimated maximum wait time" from the AMF and the extended buffer is applicable, the V-SMF will also pass the "estimated maximum wait time" to the H-SMF.

In the embodiment of the invention, the second identification information associated with the first identification information of the user equipment is determined, and the session management function is directly called to transmit data to the user equipment with the same first identification based on the second identification information, so that the need of repeatedly calling the same session management function to transmit data to be transmitted to a plurality of user equipment is avoided, the technical effect of avoiding resource waste in the data transmission process is realized, and the technical problem of resource waste in the data transmission process is solved.

Embodiments of the present invention are further described below in terms of a terminal capability and network service type indication and methods of use thereof.

At present, the transmission of the non-IP data of the Internet of things is generally completed through the technologies such as a low-power consumption wireless network technology, a narrowband Internet of things technology, a data compression and optimization technology, an ad hoc network technology, a secure encryption technology and the like, and the application of the technologies can effectively meet the requirement of the Internet of things equipment for data transmission in a non-IP network environment, but the technology still has the technical problem of low data processing efficiency.

In an alternative embodiment, fig. 2 is a schematic flow diagram of mobile terminated data transmission in control plane optimization according to an embodiment of the present invention, and as shown in fig. 2, a user equipment 201, a next generation radio access network (Next Generation Radio Access Network, abbreviated as NG RAN) 202, an access and mobility management function (Access and Mobility Management Function, abbreviated as AMF) 203, a traffic management function (V-SMF) 204, and a user plane management (User Plane Function, abbreviated as UPF) 205 may be included in the data transmission. The method may comprise the steps of:

In step S201, the AMF sends a paging message to the NG-RAN.

In this embodiment, if the UE is in an IDLE state (CM-IDLE), the AMF sends a paging message to the NG-RAN. If NG-RAN is available, the AMF may include auxiliary information of a Wake-up Signal (WUS) in the N2 paging message.

In step S202, the NG-RAN receives a paging message from the AMF.

In this embodiment, if the NG-RAN receives a paging message from the AMF and the UE and NG-RAN support WUS, it is further determined whether recommended cell assistance information is included in the NGAP paging message.

Optionally, if the NGAP paging message contains the assistance data IE of the recommended cell, the NG-RAN will broadcast the wake-up signal of the UE only in the last used cell; if the assistance data IE for the recommended cell is not included in the NGAP paging message, the NG-RAN should not broadcast the wake-up signal of the UE.

Optionally, the NG-RAN performs paging. If WUS assistance information is included in the N2 paging message, the NG-RAN takes this into account when paging the UE.

In step S203, the UE receives the paging message.

In this embodiment, if the UE receives the paging message, it responds with a NAS message sent by RRC connection establishment.

Alternatively, if the UE is in CM-IDLE state in 3GPP access and is using multiple USIM paging reject function, upon receiving the paging request, if the UE determines not to accept paging, the UE attempts to send a reject page indication via the UE-triggered service request procedure unless it cannot do so, e.g. due to UE implementation constraints.

Optionally, in the case of NB-IoT, the NG-RAN may retrieve NB-IoUE priority and expected UE behavior parameters from the AMF based on the configuration, if not previously retrieved. Based on such parameters, the NG-RAN may apply priority between requests from different UEs before triggering step 6 and during the whole RRC connection. The NG-RAN may retrieve additional parameters such as UE radio capability).

In step S204, the NAS message is forwarded to the AMF.

In this embodiment, if the AMF receives any paging restriction information in the control plane service request, the AMF updates the UE context with the received paging restriction information. If the paging restriction information is not provided, the paging restriction is not applicable.

For the above embodiment, the NEF needs to perform once for each UE the NEF anchor mobile terminated data transfer procedure, but in this procedure, the 4NEF interacts with the SMF: NEF- > SMF, each UE needs to invoke the same nsmf_nidd_delivery Request service operation to its SMF. When the UEs are anchored to the same SMF, i.e. different UEs send multiple identical service operations and identical downlink data to the same SMF, these signaling differ only in the carried UE information and PDU Session, so that there is a problem of memory loss. And if the NEF can support extended buffering in the negotiation result with the SMF, the NEF copies a copy (reference) on the NEF for each UE, and these copies are identical, resulting in NEF resource waste. Meanwhile, according to the description of the prior protocol, namely after the process that the V-SMF sends a result indication response to the H-SMF after the execution of the process that the data is forwarded is completed, the H-SMF receives a data transmission completion message, and the SMF lacks a step of interaction with the NEF, so that the NEF cannot know whether the SMF has completed forwarding the downlink data or not, and the flow has no closed loop; at the same time, more and more copies at the NEF are caused, causing storage problems.

In order to solve the above problems, an embodiment of the present invention provides a method for optimizing downlink transmission of non-IP data, which avoids storing the same NIDD data of the number of UEs in a NEF when the NEF sends the downlink NIDD to a plurality of UEs belonging to the same SMF, thereby saving storage resources on the NEF device. And compared with the prior art that UE granularity transmission is used, signaling interaction between NEF and SMF is greatly reduced, transmission efficiency is improved, and signaling resources are saved. Meanwhile, the protocol flow is perfected, so that a downlink data transmission completion message can reach the NEF to reach the AF, a closed loop is formed, and the problems of interactive redundancy, imperfect and NEF redundant storage and the like of the NEF when the NEF transmits downlink NIDD data to a plurality of UE in a Group are solved.

A non-IP data downlink transmission optimization method is further described below.

As an alternative embodiment, the Group-identified sessions in the NEF are anchored to the same SMF scene.

Fig. 3 is a schematic flow chart of anchoring a Group-identified session to the same SMF scenario in a NEF according to an embodiment of the present invention, and as shown in fig. 3, a data transmission process of the method may include a user equipment 301, an access and mobility management function 302, a traffic management function (V-SMF) 303, a session management function (H-SMF) 304, a network exposure function 305, and an application function 305. The method may comprise the steps of:

In step S301, the application function sends a request for transmitting data.

In this embodiment, if the AF has activated NIDD services for a Group of UEs using a NIDD configuration procedure and has unstructured data to be sent to the Group identified by the external Group Identifier, the AF sends an nnef_nidd_delivery Request to the NEF, wherein the data transmission Request includes the Group Identifier, TLTRI, unstructured data of the user equipment (unstructured data), reliable data service configuration (Reliable Data Service Configuration) and so on. Wherein Reliable Data Service Configuration is an optional parameter for configuring reliable data services. When unstructured data is sent to External Group Identifier, the AF needs to request an acknowledgement in Reliable Data Service Configuration.

Optionally, the purpose of the AF sending the nnef_nidd_delivery Request is to Request the device to deliver an already prepared NIDD (non-ip data) message to the network. This request is typically sent when the device is ready to send NIDD messages to the network. The chinese corresponding to the Nnef NIDD Delivery Request is the NIDD Delivery Request. The NEF is a functional unit in the 5G network architecture, responsible for exposing network functions and resources to the outside.

In step S302, the NEF sends information to the AF.

In this embodiment, based on the existing NIDD configuration of the UE group, the NEF sends a single nnef_nidd_ Delivery Response to the AF to acknowledge the NIDD delivery request of the accept group in step 1. Where Nnef NIDD Delivery Response is used to cause the AF to confirm whether Nnef successfully delivered the prepared non-IP data to the network. This response may contain delivery status, error information, or other relevant information so that the AF knows the delivery result of the NIDD message.

After the NEF sends the information to the AF, the NEF determines QoS flow contexts in the 5GS network of all UEs contained in the Group ID based on the DNN associated with the NIDD configuration and the user equipment. Searching for 5GS QoS flow context of NEF corresponding to GPSI contained in all groups, if the QoS flow context of GPSI is found, NEF checks whether AF is authorized to send data, and whether it does not exceed quota or rate.

Optionally, the NEF obtains DNN sessions corresponding to each GPSI, and may obtain, from the DNN call back, first identification information determined by the user equipment during registration, and an SMF ID, and may send an nsmf_nidd_delivery Request of SMF granularity to an H-SMF corresponding to the SMF ID. If during SMF-NEF connection establishment NEF indicates support for extended buffering in the Nnef_SMContext_Create Response, NEF retains only one copy of the data for these H-SMFs (S).

In step S304, the H-SMF transmits the MT small data to the V-SMF.

In this embodiment, in the roaming case, the H-SMF transmits nsmf_pduse_transfer mtdata including MT small data to the V-SMF.

Step S305, the V-SMF determines whether to apply extension buffering based on the local policy and based on whether the NEF has indicated support for extension buffering in Nnef smcontext_create Response during SMF-NEF connection establishment. If header compression is applied, the V-SMF compresses the header and forwards the data and PDU session ID to the AMF using Namf_Communication_N1N2MessageTransferservice operations. If extended buffering is applicable, the V-SMF includes a "Extended Buffering support" indication in the Namf_communication_N1N2message transmission.

In step S306, if the AMF determines that the UE is not reachable for the SMF, e.g., if the UE is in the MICO mode or the UE is configured for extended idle mode DRX), the AMF denies the request from the SMF. If the SMF is not subscribed to the UE reachability event, the AMF may include an indication in the reject message that the SMF does not need to trigger Namf_communication_N1N MessageTransfer Request to the AMF.

Optionally, if the SMF includes an extended buffer support indication, the AMF instructs the SMF in a reject message to determine an estimated maximum wait time for the extended buffer time. If the UE is in the MICO mode, the AMF determines the estimated maximum latency based on the expiration of the next expected periodic registration timer update or by implementation. If the UE is configured for extended idle mode DRX, the AMF determines an estimated maximum latency based on the start of the next paging time window. The AMF stores an indication that the SMF has been told that the UE is not reachable.

In step S307, in roaming case, the V-SMF sends an Nsmf_PDUSion_ TransferMTData (Result Indication) response to the H-SMF. If the V-SMF receives the "estimated maximum wait time" from the AMF and the extended buffer is applicable, the V-SMF will also pass the "estimated maximum wait time" to the H-SMF.

In step S308, if the H-SMF receives the failure indication, the H-SMF also sends the failure indication to the NEF. If the H-SMF has received the "estimated maximum wait time" and the extended buffer is applicable, the H-SMF will include the extended buffer time in the failure indication. The extended buffer time is determined by the H-SMF and should be greater than or equal to the estimated maximum latency. The NEF stores DL data in the extended buffer time. If a subsequent downlink data packet is received, the NEF does not send any additional nsmf_nidd_ Delivery Request message. The flow stops at this step.

In step S309, if the AMF determines that the UE is reachable, the mobile terminated data transmission CIoT 5GS optimization procedure in the UPF anchored control plane.

Step S309, the mobile terminated data transmission CIoT 5GS optimizes the procedure.

In this embodiment, if the NG-RAN receives a paging message from the AMF and the UE and NG-RAN support WUS, then: if the NGAP paging message contains an assistance data IE of the recommended cell, the NG-RAN will broadcast the wake-up signal of the UE only in the last used cell; otherwise (i.e., the assistance data IE for the recommended cell is not included in the NGAP paging message) the NG-RAN should not broadcast the wake-up signal of the UE.

Optionally, the NG-RAN performs paging. If WUS assistance information is included in the N2 paging message, the NG eNB takes this into account when paging the UE.

Alternatively, if the UE receives the paging message, it responds with a NAS message sent through RRC connection establishment. If the UE is in CM-IDLE state in 3GPP access and is using multiple USIM paging reject function, upon receiving the paging request and if the UE determines not to accept paging, the UE attempts to send a reject page indication via the UE-triggered service request procedure unless it cannot do so, e.g. due to UE implementation constraints.

Optionally, in the case of NB-IoT, the NG-RAN may retrieve NB-IoUE priority and expected UE behavior parameters from the AMF based on the configuration, if not previously retrieved. Based on such parameters, the NG-RAN may apply priority between requests from different UEs before triggering step S307 and during the whole RRC connection. The NG-RAN may retrieve additional parameters (e.g., UE radio capability).

Optionally, the NAS message is forwarded to the AMF. If the AMF receives any paging restriction information in the control plane service request, the AMF updates the UE context with the received paging restriction information. If the paging restriction information is not provided, the paging restriction is not applicable. If the reliable data service header indicates that an acknowledgement is requested, the UE should respond with an acknowledgement of the received DL data.

In step S310, if the AMF has paged the UE to trigger the NAS procedure in step S309, the AMF should initiate a defined UE configuration update procedure to allocate a new 5G-GUTI. If the UE does not respond to the page, the AMF sends a failure notification to the V-SMF. Otherwise, the process proceeds to step S311.

In step S311, in the roaming case, if the V-SMF has received the failure notification from the AMF, the V-SMF transmits an nsmf_pduse_transfer mtdata (result indication) response to the H-SMF. If the H-SMF receives the failure notification, the SMF indicates to the NEF that the requested Nsmf_NID_delivery has failed. If extended buffering is applied, NEF clears the copy of the data. The process continues at step S314.

Step S312, control plane UPF anchored mobile terminated data transmission CIoT 5GS optimization procedure.

In step S313, the AMF notifies the V-SMF that the data has been forwarded.

In step S314, in the roaming case, the V-SMF sends an nsmf_pduse_transfer mtdata (Result Indication ) response to the H-SMF, indicating that the data has been forwarded.

In this embodiment, after the H-SMF receives the nefnsmf_nidd_delivery Request, a timer is set according to the condition of pduse of data to be transmitted (PDU Session of the same GroupID received from the NEF), and the transmission result information returned by the AMF/V-SMF is received in the timer time, and when the timer expires, step S316 is executed.

In step S315, for the identified UE2 in GroupID, data transmission is performed according to the method described above.

Optionally, after the SMF timer expires or the SMF receives the transmission return result of all related PDU sessions, the SMF invokes the nnef_nidd_groupdelivery notify service operation to the NEF, and informs the NEF of completing the data transmission of all corresponding SMFs under the present SMF, and the NEF returns a response to the AF.

Optionally, after step S303 is performed on all UEs in the group, the NEF sends an aggregate response in an nnef_nidd_groupdelivelynotify message. If some target UEs are not reachable due to UE power saving, the NEF does not buffer the MT NIDD, but in this step it may include an indication of the expected reachability of these UEs in its response to the AF. The NEF may include a cause value if delivery to a certain UE fails.

Optionally, since there are multiple SMFs for all UE sessions corresponding to a Group, the NEF calls nsmf_nidd_delivery Request service operation to these SMFs simultaneously, if during SMF-NEF connection setup, the NEF indicates support for extended buffering in nnef_smcontext_create Response, then the NEF keeps only one copy of data for these H-SMFs (S).

For example, the SMF may transmit downlink data to its corresponding UE1 according to the above steps. And the SMF2 may send downlink data to its corresponding UE2 according to the above steps.

In this embodiment, the NEF determines the 5GS QoS flow context for all UEs contained in the Group ID based on the DNN associated with the NIDD configuration and the user equipment. Searching for the corresponding NEF 5GS QoS flow context of the GPSI contained in all groups, and if the QoS flow context of the contained GPSI is found, checking whether the AF is authorized to send data and whether the AF does not exceed the quota or the rate of the AF. If these checks fail, an appropriate error code is returned. The NEF obtains SMF IDs of DNN sessions corresponding to the GPSIs, and sends Nsmf_NIDDDelivery requests of SMF granularity to H-SMFs corresponding to the SMF IDs. If during SMF-NEF connection establishment NEF indicates support for extended buffering in the Nnef_SMContext_CreatResponse, NEF retains only one copy of the data for these SMFs (S).

Optionally, in the process of transmitting data from the NEF to the SMF, the enhancement may be performed by an instruction (for example, nsmf_nidd_delivery Request), where the instruction may include parameters: a user identification list (User Identity list), a PDU session ID list (PDU Session ID list), unstructured data (unstructured data), reliable data service configuration (Reliable Data Service Configuration). It should be noted that the type of parameters in the instruction is not particularly limited, and is merely illustrated herein.

In this embodiment, when the SMF receives NIDD transmission request signaling sent to a plurality of UEs anchored to the SMF, it determines whether the received UE list (user equipment group) belongs to the same AMF management, if yes, sends a multiple UE granularity nnef_smcontext_create Response to the AMF, and if not, identifies information such as each PDUSessionID, UE identifier, and transmits according to the above method.

In this embodiment, the NEF does not need to store the corresponding UE number of downlink data in the Group as in the prior art. And the message sent by the NEF to the SMF is of SMF granularity, so that compared with the prior art, the method has the advantages that the signaling is transmitted by using the UE granularity, and the efficiency is higher. Meanwhile, the network exposure function Nnef determines a context data flow of the user equipment based on a data network name and a user identification user equipment associated with configuration of data to be transmitted, acquires a name of a session management function of the data network name corresponding to the context data flow, and establishes a corresponding connection with the corresponding session management function.

In this embodiment, the second identification information associated with the first identification information of the user equipment is determined, and based on the second identification information, the session management function is directly called to transmit data to the user equipment with the same first identification, so that the need of repeatedly calling the same session management function to transmit data to be transmitted to a plurality of user equipment is avoided, the technical effect of avoiding resource waste in the data transmission process is realized, and the technical problem of resource waste in the data transmission process is solved.

It should be still noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood and appreciated by those skilled in the art that the present invention is not limited by the order of acts, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.

From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the related art in the form of a software product stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the embodiments of the present invention.

The embodiment also provides a data transmission device, which is used for implementing the foregoing embodiments and preferred embodiments, and is not described in detail. As used below, the terms "module," "apparatus" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

According to an embodiment of the present invention, there is further provided an embodiment of a data transmission apparatus for implementing the above data, and fig. 4 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention, as shown in fig. 4, where the data transmission apparatus includes: a first determination unit 402, a second determination unit 404, and a transmission unit 406.

The first determining unit 402 is configured to determine, in response to a data transmission request, at least one first identification information from the data transmission request, where the first identification information is used to identify a user equipment to which data is to be transmitted.

The second determining unit 404 is configured to determine second identification information associated with the first identification information.

The transmitting unit 406 is configured to transmit the first identification information and the data to be transmitted to the session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, where the first identification information of different target user equipment in the target user equipment group is the same.

In the embodiment of the present invention, through the first determining unit 402, at least one first identification information is determined from the data transmission request in response to the data transmission request, where the first identification information is used to identify the user equipment to which the data is to be transmitted; determining, by the second determining unit 404, second identification information associated with the first identification information, where the second identification information is used to identify a session management function for transmitting data to be transmitted; through the transmission unit 406, the first identification information and the data to be transmitted are transmitted to the session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to the target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same, thereby realizing the technical effect of avoiding resource waste in the data transmission process and solving the technical problem of resource waste in the data transmission process.

It should be noted that each of the above modules may be implemented by software or hardware, for example, in the latter case, it may be implemented by: the above modules may be located in the same processor; alternatively, the various modules described above may be located in different processors in any combination.

Here, it should be noted that the first determining unit 402, the second determining unit 404, and the transmitting unit 406 correspond to steps S102 to S106 in the embodiment, and the above modules are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in the above embodiments. It should be noted that the above modules may be run in a computer terminal as part of the apparatus.

It should be noted that, the optional or preferred implementation manner of this embodiment may be referred to the related description in the embodiment, and will not be repeated herein.

The above-described data transmission apparatus may further include a processor and a memory, wherein the first determining unit 402, the second determining unit 404, the transmission unit 406, and the like are stored as program modules in the memory, and the processor executes the program modules stored in the memory to realize corresponding functions.

The processor comprises a kernel, the kernel accesses the memory to call the corresponding program module, and the kernel can be provided with one or more than one. The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

According to an embodiment of the present invention, there is also provided an embodiment of a nonvolatile storage medium. Optionally, in this embodiment, the nonvolatile storage medium includes a stored program, where the device in which the nonvolatile storage medium is located is controlled to execute any one of the data transmission methods when the program runs.

Alternatively, in this embodiment, the above-mentioned nonvolatile storage medium may be located in any one of the computer terminals in the computer terminal group in the computer network or in any one of the mobile terminals in the mobile terminal group, and the above-mentioned nonvolatile storage medium includes a stored program.

Optionally, the program controls the device in which the nonvolatile storage medium is located to perform the following functions when running: determining at least one first identification information from the data transmission request in response to the data transmission request, wherein the first identification information is used for identifying user equipment for data to be transmitted; determining second identification information associated with the first identification information; and transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

According to an embodiment of the present invention, there is also provided an embodiment of a processor. Optionally, in this embodiment, the processor is configured to execute a program, where the program executes any one of the data transmission methods.

According to an embodiment of the present invention, there is also provided an embodiment of a computer program product adapted to perform a program initializing the steps of the transmission method of data of any one of the above, when executed on a data processing device.

Optionally, the computer program product mentioned above, when executed on a data processing device, is adapted to perform a program initialized with the method steps of: determining at least one first identification information from the data transmission request in response to the data transmission request, wherein the first identification information is used for identifying user equipment for data to be transmitted; determining second identification information associated with the first identification information; and transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

Fig. 5 is a schematic diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 5, an embodiment of the present invention provides an electronic device 50, where the electronic device 50 includes a processor, a memory, and a program stored on the memory and executable on the processor, and the processor implements the following steps when executing the program: determining at least one first identification information from the data transmission request in response to the data transmission request, wherein the first identification information is used for identifying user equipment for data to be transmitted; determining second identification information associated with the first identification information; and transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present invention, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the modules may be a logic function division, and there may be another division manner when actually implemented, for example, a plurality of modules or components may be combined or may be integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with respect to each other may be through some interface, module or indirect coupling or communication connection of modules, electrical or otherwise.

The modules described above as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.

The integrated modules described above, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable non-volatile storage medium. Based on such understanding, the technical solution of the present invention may be essentially or a part contributing to the related art or all or part of the technical solution may be embodied in the form of a software product stored in a non-volatile storage medium, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned nonvolatile storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. A method of transmitting data, comprising:

determining at least one first identification information from a data transmission request in response to the data transmission request, wherein the first identification information is used for identifying user equipment for data to be transmitted;

determining second identification information associated with the first identification information;

transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

2. The method of claim 1, wherein determining at least one first identification information from the data transmission request in response to the data transmission request comprises:

responding to the data transmission request, and acquiring session information corresponding to the user equipment;

and determining the first identification information from the session information.

3. The method of claim 1, wherein determining second identification information associated with the first identification information comprises:

Classifying the at least one user equipment based on the first identification information to obtain at least one user equipment group, wherein the first identification information of different user equipment in the user equipment group is the same;

selecting a target equipment group from the at least one user equipment group;

determining the second identification information associated with the first identification information of the target device group.

4. A method according to claim 3, wherein the session management function transmits the data to be transmitted to a plurality of the target user devices in the target user device group in turn.

5. A method according to claim 3, characterized in that the method further comprises:

and responding to a data transmission request, and storing the data to be transmitted of the target equipment group.

6. The method according to claim 1, wherein the method further comprises:

responding to the end of the data transmission to be transmitted, and acquiring an end instruction sent by the session management function; or (b)

And responding to the end of the data transmission to be transmitted and the expiration of the timer of the session management function, and acquiring an end instruction sent by the session management function at fixed time.

7. A data transmission apparatus, comprising:

a first determining unit, configured to determine at least one first identification information from a data transmission request in response to the data transmission request, where the first identification information is used to identify a user equipment to which data is to be transmitted;

a second determining unit configured to determine second identification information associated with the first identification information;

and the transmission unit is used for transmitting the first identification information and the data to be transmitted to a session management function identified by the second identification information, so that the session management function transmits the data to be transmitted to a target user equipment group in the user equipment, wherein the first identification information of different target user equipment in the target user equipment group is the same.

8. An electronic device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.

9. A non-volatile storage medium storing computer instructions for causing the computer to perform the method of any one of claims 1-6.

10. A computer program product comprising a computer program which, when executed by a processor, implements the method according to any of claims 1-6.