CN115087039B

CN115087039B - Data transmission method and device and storage medium

Info

Publication number: CN115087039B
Application number: CN202210836893.8A
Authority: CN
Inventors: 王文治; 郭靓; 王志佳; 海明慈; 孙恺泽; 张舵
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2023-12-08
Anticipated expiration: 2042-07-15
Also published as: CN115087039A

Abstract

The disclosure provides a data transmission method and device and a storage medium, and relates to the technical field of wireless communication. The data transmission method is executed by the terminal equipment and comprises the following steps: the method comprises the steps that a narrowband internet of things terminal converts pictures into text data, whether a power saving mode is entered is determined according to a discontinuous receiving timer, text data packets are transmitted to network equipment in the form of small data packets through the following transmission of a control surface when the narrowband internet of things terminal enters the power saving mode and/or ends the power saving mode, and therefore the transmission of the pictures is achieved by reasonably utilizing the idle time period.

Description

Data transmission method and device and storage medium

Technical Field

The disclosure relates to the technical field of wireless communication, and in particular relates to a data transmission method and device and a storage medium.

Background

The narrowband internet of things (Narrow Band Internet of Things, NB-IoT) becomes an important branch of the internet of everything. The NB-IoT is built in the cellular network, consumes only about 180kHz bandwidth, and can be directly deployed in the GSM network, the UMTS network or the LTE network, so that the deployment cost is reduced, and smooth upgrading is realized.

The 3GPP develops technical researches for enhancing the functions of the mobile communication network according to the application scene of the narrow-band service so as to adapt to the service requirements of the Internet of things which are vigorously developed. NB-IoT is an emerging technology in the IoT field that supports cellular data connectivity of low power devices over a wide area network, also known as a Low Power Wide Area Network (LPWAN). NB-IoT supports efficient connections for long standby times, high demand devices for network connections. NB-IoT device battery life is said to be improved by at least 10 years while still providing very comprehensive indoor cellular data connection coverage.

With the advent of smart cities and big data age, wireless communication will realize everything connection. Many enterprises expect that the future world wide internet of things connection will be a billion-level era. Numerous object-to-object links have emerged, however, most of these links are carried by short-range communication technologies such as bluetooth, wi-Fi, etc., but not carrier mobile networks. In order to meet the service requirements of different Internet of things, according to the service characteristics of the Internet of things and the characteristics of the mobile communication network.

In practical application, a constructor of each smart city sensing network needs to build a telecommunication network and a sensor network, and NB-IoT and eMTC are key technologies in the internet of things; the terminal of the Internet of things is equipment for connecting the sensing network layer and the transmission network layer in the Internet of things to collect data and send the data to the network layer. It is responsible for various functions such as data acquisition, preliminary processing, encryption, transmission, etc.

The intensity of the wireless signal and the size of the picture are key factors influencing the transmission time. In the picture sending process, the communication module cannot be powered off, otherwise, the communication failure can be caused by unsuccessful upgrading. Take the marine NB-IoT chip as an example: from SP3 to SP5, it takes about 1 minute when the wireless signal is excellent and about 10 minutes when the wireless signal is weak, according to 500 bytes per second analysis.

Certain traffic is consumed in the process of sending the NB-IoT picture, the NB-IoT is not currently supporting the sending of voice and large data packets, and frequent sending requests consume electric quantity. How to solve the problem of sending pictures in NB-IoT becomes a urgent need to be solved.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The disclosure aims to provide a data transmission method and device, and a storage medium, which at least overcome the problem that the NB-IoT of the related art does not support voice and large data packet transmission to some extent.

Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.

According to an aspect of the present disclosure, there is provided a data transmission method, including: the terminal of the narrowband Internet of things converts the picture into text data; determining whether to enter a power saving mode according to the discontinuous reception timer; and when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, transmitting the text data packet to network equipment in the form of a small data packet through the following transmission of a control surface.

In one embodiment of the present disclosure, the method further comprises: and when the discontinuous reception timer is overtime, the narrowband internet of things terminal enters a power saving mode, and the text data is transmitted to an application server in the form of small data packets through the following transmission of a control surface.

In one embodiment of the present disclosure, the method further comprises: starting a periodic tracking area timer to time the duration of the inactive state of the narrowband internet of things terminal; and when the periodical tracking area timer is overtime, the narrowband internet of things terminal ends the power saving mode, and the text data is transmitted to the application server in the form of small data packets through the following transmission of the control surface.

In one embodiment of the present disclosure, the method further comprises: starting an inactivity timer to time the duration of the inactivity state of the narrowband internet-of-things terminal; and when the inactivity timer expires, the narrowband internet of things terminal enters an idle mode.

In one embodiment of the present disclosure, the method further comprises: the method comprises the steps that a narrowband internet of things terminal initiates a context suspension flow of the narrowband internet of things terminal to network equipment; and the narrowband internet of things terminal responds to the RRC connection release message sent by the base station after the inactivity timer of the narrowband internet of things terminal is overtime, and the RRC connection is established with the network equipment.

In one embodiment of the present disclosure, the small data packet is 50-200 bytes in size.

According to one aspect of the present disclosure, there is provided a data transmission method including: the network equipment receives a plurality of groups of small data packets sent by the narrowband internet of things terminal when entering a power saving mode and/or ending the power saving mode; and the application server of the network equipment analyzes the plurality of groups of small data packets into the pictures.

In one embodiment of the present disclosure, a base station starts a discontinuous reception timer for a narrowband internet of things terminal to time the duration of an inactive state of the narrowband internet of things terminal.

In one embodiment of the disclosure, the network device includes a base station and a core network, and the method further includes: the base station detects the inactivity of the narrowband internet of things terminal, and starts an inactivity timer to count the duration of the inactivity state of the narrowband internet of things terminal; after the inactivity timer is overtime, the base station initiates a context suspension flow of the narrowband internet of things terminal to a mobility management entity (Mobility Management Entity, MME); and after finishing the context suspension processing of the narrowband internet of things terminal, the base station sends a Radio Resource Control (RRC) connection release message to the narrowband internet of things terminal.

In one embodiment of the present disclosure, the method further comprises: after the inactivity timer is overtime, the base station sends a context suspension request of the narrowband internet of things terminal to the MME, so that the MME triggers the service gateway S-GW to release the load of the narrowband internet of things terminal; and the base station receives a context suspension response of the narrowband internet of things terminal, which is sent by the MME after the bearer of the narrowband internet of things terminal is released.

In one embodiment of the disclosure, the network device further comprises a service capability opening function (Service Capability Exposure Function, SCEF), the method further comprising: the base station sends the plurality of sets of data to the application server via MME and SCEF.

According to an aspect of the present disclosure, there is provided a terminal device including: the conversion unit is used for converting the pictures into text data; and the sending unit is used for sending the text data packet to the network equipment through the following transmission of the control surface in the form of a small data packet when the narrowband internet of things terminal enters the power saving mode and/or ends the power saving mode.

According to one aspect of the present disclosure, there is provided a network device comprising: the receiving unit is used for receiving a plurality of groups of small data packets sent by the narrowband internet of things terminal when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode; and the analysis unit is used for analyzing the plurality of groups of small data packets into the pictures.

According to one aspect of the present disclosure, there is provided a communication system comprising: the narrowband internet of things terminal is used for converting pictures into text data, and when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, the text data is grouped and transmitted to the network equipment in the form of small data packets through the following transmission of the control surface; the base station is used for receiving a plurality of groups of small data packets sent by the narrowband internet of things terminal when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode; a mobility management entity and a service capability opening function, which are used for receiving the multiple groups of small data packets sent by the base station and sending the multiple groups of small data packets to an application server; and the application server is used for analyzing the plurality of groups of small data packets into the pictures.

According to one aspect of the present disclosure, there is provided a communication apparatus comprising: at least one processor; and at least one memory for storing executable instructions of the processor; wherein the processor is configured to perform any of the above data transmission methods via execution of the executable instructions.

According to one aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the data transmission method of any one of the above.

The disclosure provides a data transmission method and device and a storage medium, and relates to the technical field of wireless communication. The data transmission method is executed by the terminal equipment and comprises the following steps: the narrowband internet of things terminal converts the pictures into text data, and when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, the text data are grouped and transmitted to the network equipment in the form of small data packets through the road transmission of the control surface, so that the transmission of the pictures is realized by reasonably utilizing the idle time period.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 shows a schematic diagram of a communication system of a data transmission method of an embodiment of the present disclosure;

FIG. 2 shows a flow diagram of a data transmission method in an embodiment of the present disclosure;

FIG. 3 shows another flow diagram of a data transmission method in an embodiment of the present disclosure;

FIG. 4 shows a flow diagram of a data transmission method in an embodiment of the disclosure;

FIG. 5 shows another flow diagram of a data transmission method in an embodiment of the present disclosure;

FIG. 6 shows another flow diagram of a data transmission method in an embodiment of the present disclosure;

fig. 7 shows a schematic configuration diagram of a communication system in an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the disclosure; and

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.

The technical solution of the embodiment of the present disclosure may be applied to various communication systems, for example: long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency divisionduplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) telecommunications systems, fifth generation (5th generation,5G) systems, new Radio (NR), and the like. The technical scheme provided by the disclosure can also be applied to future communication systems, such as a sixth generation mobile communication system. The communication system may also be a public land mobile network (public land mobilenetwork, PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (machine to machine, M2M) communication system, an internet of things (internet ofThings, ioT) communication system, or other communication systems.

The terminal device (terminal equipment) in the embodiment of the disclosure may refer to an internet of things terminal with a low-power-consumption wide area network of NB-IoT as a carrier, which takes a service smart city as a leading part, comprehensively realizes city connection and city perception based on an intelligent sensor and a network, accurately and timely perceives city pulse, reads perceived data and processes the perceived data through a central processing module, and then, according to a network protocol, the perceived data are transmitted through an external communication interface, for example: and the GPRS module, the Ethernet interface, the WIFI and the like are transmitted to a designated center processing platform of the Ethernet. The terminal is mainly applied to smart cities, smart security protection, intelligent traffic, intelligent illumination, intelligent parking, intelligent well covers, intelligent garbage cans and the like.

The network device in the embodiment of the present disclosure may be any communication device having a wireless transceiving function for communicating with a terminal device. The apparatus includes, but is not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a home evolved Node B, heNB, or home Node B, HNB, a Base Band Unit (BBU), an Access Point (AP), a radio relay Node, a radio backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission and receptionpoint, TRP) in a wireless fidelity (wireless fidelity, WIFI) system, or the like, may also be a gNB in a 5G system, or a transmission point (TRP or TP) in a NR system, one or a group (including a plurality of antenna panels) of antenna panels of a base station in a 5G system, or may also be a network Node constituting a gNB or a transmission point, such as a Base Band Unit (BBU), or a Distributed Unit (DU), or the like.

To facilitate understanding of the embodiments of the present disclosure, a communication system suitable for use with the embodiments of the present disclosure will first be described in detail by taking the communication system shown in fig. 1 as an example. Fig. 1 shows a schematic diagram of a communication system of a data transmission method according to an embodiment of the present disclosure. As shown in fig. 1, a narrowband internet of things terminal accesses a base station in a wireless manner, and the base station is connected with a core network. The core network devices include, for example, MME (MobilityManagement Entity ), SCEF (Service Capability ExposureFunction, service capability opening function) entity, S-GW (Serving GateWay), P-GW (Public Data Network GateWay ), HSS (HomeSubscriber Server, home subscriber server), AS (Application Server ), and the like. The AS refers to a FOTA (Firmware Over-The-Air) server, which can be deployed in a narrowband Internet of things management platform. The MME is one of key network elements in the core network, is a control plane functional entity, temporarily stores user data, and is responsible for managing and storing user related information, such as user identifier, mobility management state, user security parameters, and the like. In an LTE network, a base station is, for example, an Evolved Node B (eNodeB or eNB for short). In addition, the interface between the base station and the MME is S1-AP, the interface between the base station and the S-GW is S1-U, the interface between the MME and the S-GW is S11, the interface between the MME and the HSS is S6a, the interface between the MME and the SCEF is T6a, the interface between the S-GW and the P-GW is S5/8, the interface between the P-GW and the AS is SGi, and the interface between the HSS and the SCEF is S6T.

The embodiments described herein may be implemented in various types of wireless networks including, but not limited to, universal Mobile Telecommunications System (UMTS) terrestrial radio access network (UTRAN), long Term Evolution (LTE) evolved UTRAN (E-UTRAN) and/or LTE-Advanced (LTE-a) or other wireless networks. In one implementation where the network is an LTE type network, the overlay access network includes an evolved universal terrestrial radio access network (E-UTRAN) connected to an Evolved Packet Core (EPC). The E-UTRAN includes at least one Universal Terrestrial Radio Access Network (UTRAN) node B or eNodeB or eNB. The enodebs are interconnected by an X-axis interface.

It should be understood that more network nodes, such as terminal devices or base stations, may be included in the communication system shown in fig. 1, and that the base stations or terminal devices included in the communication system shown in fig. 1 may be base stations or terminal devices of the various forms described above. Embodiments of the present disclosure are not shown one by one in the drawings.

Aiming at the problem that the NB-IoT in the related art does not support voice and large data packet transmission and frequent picture requests for transmitting large data packets consume electric quantity, the disclosure provides a method for transmitting NB-IoT pictures, which converts pictures into texts and transmits the pictures to an application server through the following (control plane) transmission of the NB-IoT through small packet data with the size of less than 200 bytes.

At least one embodiment of the present disclosure provides a data transmission method. The method is performed by a terminal device. Fig. 2 shows a flow diagram of a data transmission method in an embodiment of the present disclosure. As shown in fig. 2, the method includes steps S201 to S203.

S201, converting the picture into text data by the narrowband Internet of things terminal.

S202, determining whether to enter a power saving mode according to the discontinuous reception timer.

And S203, when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, transmitting text data packets to the network equipment in the form of small data packets through the path transmission of the control plane.

For example, when the narrowband internet of things terminal enters a power saving mode, text data packets are sent to the network device through the channel-associated transmission of the control plane in the form of small data packets. For example, when the narrowband internet of things terminal ends the power saving mode, the text data packet is sent to the network device through the channel-associated transmission of the control plane in the form of a small data packet. For example, when the narrowband internet of things terminal enters a power saving mode and ends the power saving mode, text data packets are sent to the network device in the form of small data packets through the channel-associated transmission of the control plane.

In the embodiment of the data transmission method, the picture is converted into the text data through the narrowband internet of things terminal, the text data is grouped when the narrowband internet of things terminal enters the power saving mode and/or ends the power saving mode, and the text data is transmitted to the network equipment in the form of small data packets through the road transmission of the control surface, so that the transmission of the picture is realized by reasonably utilizing the idle time period.

At least one embodiment of the present disclosure provides a data transmission method. The method is performed by a terminal device. Fig. 3 shows another flow diagram of a data transmission method in an embodiment of the disclosure. On the basis of the embodiment shown in fig. 3, the method comprises steps S301 and S307 as shown in fig. 3.

And S301, when the inactivity timer is overtime, the narrowband Internet of things terminal enters an idle mode.

S302, the narrowband Internet of things terminal initiates a context suspension flow of the narrowband Internet of things terminal to the network equipment.

S303, the narrowband internet of things terminal responds to the RRC connection release message sent by the base station after the inactivity timer of the narrowband internet of things terminal is overtime, and the RRC connection is established with the network equipment.

S304, the narrowband Internet of things terminal converts the picture into text data.

For example, converted into text data by the open source protocol XMPP protocol.

And S305, when the discontinuous reception timer is overtime, the narrowband internet of things terminal enters a power saving mode, and text data is transmitted to the application server in the form of small data packets through the following transmission of the control surface.

And S306, when the periodical tracking area timer is overtime, the narrowband internet of things terminal ends the power saving mode, and text data is transmitted to the application server in the form of small data packets through the following transmission of the control surface.

In the embodiment of the data transmission method, the picture is converted into text data through the narrowband internet of things terminal, the text data is grouped when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, and the text data is transmitted to the network equipment through the path transmission of the control surface in the form of small data packets, for example, the small data packets of 50-200 bytes, so that the transmission of the picture is realized by reasonably utilizing the idle time period.

At least one embodiment of the present disclosure provides a data transmission method. The method is performed by a network device. Fig. 4 shows a flow diagram of a data transmission method in an embodiment of the disclosure. As shown in fig. 4, the method includes steps S401 and S402.

S401, the network equipment receives a plurality of groups of small data packets sent by the narrowband internet of things terminal when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode.

S402, the application server of the network equipment analyzes a plurality of groups of small data packets into pictures.

In the embodiment of the data transmission method, a plurality of groups of small data packets sent by a narrowband internet of things terminal when entering a power saving mode and/or ending the power saving mode are received through network equipment, and an application server analyzes the plurality of groups of small data packets into pictures, so that the transmission of the pictures is realized by reasonably utilizing the idle time period.

At least one embodiment of the present disclosure provides a data transmission method. The method is performed by a network device comprising a base station and a core network. Fig. 5 shows another flow diagram of a data transmission method in an embodiment of the present disclosure. As shown in fig. 5, the method includes steps S501 and S508.

S501, the base station detects the inactivity of the narrowband Internet of things terminal, and starts an inactivity timer to count the duration of the inactivity state of the narrowband Internet of things terminal.

S502, after the inactivity timer is overtime, the base station initiates a context suspension flow of the narrowband Internet of things terminal to a mobility management entity (MobilityManagement Entity, MME).

S503, after finishing the context suspension processing of the narrowband Internet of things terminal by the MME, the base station sends a radio resource control RRC connection release message to the narrowband Internet of things terminal.

S504, the base station sends a context suspension request of the narrowband Internet of things terminal to the MME, so that the MME triggers the service gateway S-GW to release the bearing of the narrowband Internet of things terminal.

S505, the base station receives a context suspension response of the narrowband Internet of things terminal sent by the MME after the bearer of the narrowband Internet of things terminal is released.

S506, starting a periodic tracking area timer to time the duration of the inactive state of the narrowband Internet of things terminal.

S507, the base station receives a plurality of groups of small data packets sent by the narrowband Internet of things terminal when the narrowband Internet of things terminal enters a power saving mode and/or ends the power saving mode.

The network device also includes a service capability opening function (Service Capability ExposureFunction, SCEF). The data packet can be transmitted in a non-IP mode, so that the data is prevented from being exposed in the IP network. SCEF-non-IP data transfer authorization check.

S508, the base station sends the multiple sets of data to the application server via MME and SCEF.

S509, the application server analyzes the groups of small data packets into pictures.

It should be noted that, the data transmission method performed by the network device shown in fig. 4 and fig. 5 is a data transmission method performed by a network device on the opposite side of the data transmission method performed by the terminal device shown in fig. 2 to fig. 3, and related steps and features may be referred to each other, so that the technical principles and technical effects are similar, and are not repeated herein.

The data transmission method of the present disclosure is described in detail below with reference to embodiments.

Fig. 6 illustrates a flow diagram of a data transmission method of some embodiments of the present disclosure. As shown in fig. 6, the method of this embodiment includes steps S601 to S610.

S601, starting an inactivity timer by a base station to time the duration of the inactivity state of the narrowband Internet of things terminal.

After the narrowband internet of things terminal, the base station and the core network equipment finish data receiving and transmitting, the base station detects inactivity of the narrowband internet of things terminal and starts an inactivity timer to time duration of the inactivity state of the narrowband internet of things terminal.

S602, the base station sends a context suspension request of the narrowband Internet of things terminal to the MME.

After the base station determines that the inactivity timer is overtime, the RRC connection of the narrowband internet of things terminal is suspended, a context suspension procedure of the narrowband internet of things terminal is initiated to the core network device, and the base station sends a context suspension request of the narrowband internet of things terminal to the MME (UE Context Suspend Request). For example, the base station sends a context suspension request of the narrowband internet of things terminal to the MME through the interface S1-AP.

S603, the MME triggers the S-GW to release the bearing of the narrowband Internet of things terminal.

For example, the MME triggers the S-GW to release the S1-U bearer.

S604, the MME sends a context suspension response of the narrowband Internet of things terminal to the base station.

After the bearer of the narrowband internet of things terminal is released, the MME sends a context suspension response of the narrowband internet of things terminal to the base station (UE Context Suspend Response).

And S605, the base station sends an RRC connection release (RRC ConnectionRelease) message to the narrowband Internet of things terminal.

And the base station receives a context suspension response of the narrowband Internet of things terminal sent by the MME, which indicates that the core network equipment completes the processing of suspending the context of the narrowband Internet of things terminal, and the base station sends an RRC connection release message to the narrowband Internet of things terminal. For example, the Resume ID stored in the UE and the MME allocated 200 byte delta packet.

S606, the narrowband internet of things terminal suspends SRBs (Signaling Radio Bearer, signaling radio bearers) and DRBs (Data Radio Bearer, data radio bearers) and enters an idle state.

The narrowband internet of things terminal receives the RRC connection release message sent by the base station, suspends SRBs (Signaling Radio Bearer, signaling radio bearers) and DRBs (Data Radio Bearer, data radio bearers), and then enters an idle state.

S607, the narrowband internet of things terminal determines to enter a PSM mode.

The narrowband internet of things terminal starts a discontinuous reception timer T3324 and enters a power saving mode (Power Saving Mode, PSM) after the discontinuous reception timer times out. The narrowband internet of things terminal starts a tracking area update (Tracking Area Updating, TAU) period request timer T3412, and after the tracking area update period request timer times out, the narrowband internet of things terminal exits the power saving mode, enters an idle state when no data is transmitted, and enters a connection state when data is transmitted. The timing times of the timer T3324 and the timer T3412 can be determined through negotiation.

And S608, when the narrowband internet of things terminal enters the PSM mode, the narrowband internet of things terminal transmits text data to the application server in the form of small data packets through the following transmission of the control surface.

S609, when the narrow-band internet of things terminal ends the PSM mode, text data is transmitted to the application server in the form of small data packets through the channel transmission of the control surface.

For example, the narrowband internet of things terminal sends the picture data to the base station and to the application server via MME, SCEF.

Steps S601-S609 are circularly executed until all the packets of the picture are transmitted.

S610, the application server analyzes the data fragments and converts the data fragments into pictures.

After the narrowband internet of things terminal sends data in N/M (for example, N is the total data amount of pictures, M is the data amount transmitted in each period) PSM periods, the application server analyzes the data fragments and converts the data fragments into texts through an open source protocol XMPP protocol.

It should be noted that, according to the total amount of the picture data and the data amount of the RRC connection release message transmitted twice in one cycle along with the path, for example, by the MME, it is determined how many data packets the text data is divided into. Assuming that the total amount of picture data is 2000 bytes and the data amount of one transmission along the path of the control panel in the PSM mode is 200 bytes, the picture data is divided into 10 data packets, and all picture data can be transmitted to the application server through the RRC connection release message 5 times.

Therefore, in the embodiment of the disclosure, the picture is sent through the control plane network elements such as the MME, the SCEF and the like, and the user plane network elements such as the S-GW, the P-GW and the like are not needed, and the user plane connection is not needed to be established. The data packets transmitted by the control plane signaling path are smaller than the data packets transmitted by the user plane connection. The size of the data packet transmitted via the control plane signaling path is, for example, 50-200 bytes.

The embodiment realizes the method for sending the picture through the control plane signaling, and in the process of releasing the RRC connection of the narrowband Internet of things terminal, the firmware upgrading small data packet is sent along with the path through the RRC connection release message, so that the wireless connection is not required to be additionally established, and the electric quantity consumption of the narrowband Internet of things terminal is saved. In addition, firmware is upgraded by using the leisure time of the terminal of the narrowband Internet of things, so that the end-to-end time delay is reduced, and the electric quantity is further saved.

The PSM mode and the TAU period are required to be started in different application scenes by the narrowband Internet of things terminal, the time is the leisure time period of the narrowband Internet of things terminal, and the leisure time period is reasonably utilized for picture transmission. Assume that: the total picture data has 30000 bytes, one PSM period and TAU period are set to be 1 minute, firmware is upgraded from SP3 to SP5, the firmware is upgraded 400 bytes per minute, under the condition of good signals, the firmware is upgraded from SP3 to SP5, 1 hour and 15 minutes are required, and the time required for picture transmission accords with most of static narrowband Internet of things application scenes.

At least one embodiment of the present disclosure provides a communication system. Fig. 7 illustrates a schematic diagram of a communication system of some embodiments of the present disclosure. As shown in fig. 7, the communication system of this embodiment includes: base station 710, narrowband internet of things terminal 720, mobility management entity 730, and service capability opening function 740.

For example, the narrowband internet of things terminal is used for converting pictures into text data, and when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, the text data is grouped and transmitted to the network device in the form of small data packets through the road transmission of the control surface; the base station is used for receiving a plurality of groups of small data packets sent by the narrowband internet of things terminal when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode; the MME730 and the SCEF 740 are configured to receive multiple groups of small data packets sent by the base station, and send the multiple groups of small data packets to the application server; the application server 750 is used to parse groups of small packets into pictures.

In some embodiments, the base station 710 is configured to perform inactivity detection on the narrowband internet of things terminal and start an inactivity timer to time the duration of the inactivity state of the narrowband internet of things terminal; after the inactivity timer is overtime, initiating a context suspension flow of the narrowband Internet of things terminal to core network equipment; and after the core network equipment completes the context suspension processing of the narrowband internet of things terminal, sending a Radio Resource Control (RRC) connection release message to the narrowband internet of things terminal. The narrowband internet of things terminal 720 is configured to receive an RRC connection release message sent by the base station after the inactivity timer of the narrowband internet of things terminal expires, and enter an idle state. The MME730 is configured to trigger the serving gateway S-GW to release the bearer of the narrowband internet of things terminal after receiving the context suspension request of the narrowband internet of things terminal sent by the base station, and send a context suspension response of the narrowband internet of things terminal to the base station after the bearer of the narrowband internet of things terminal is released.

At least one embodiment of the present disclosure provides a terminal device. Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the disclosure. As shown in fig. 8, the apparatus includes a conversion unit and a transmission unit. The conversion unit is used for converting the pictures into text data; and the sending unit is used for sending the text data packet to the network equipment in the form of a small data packet through the following transmission of the control surface when the narrowband internet of things terminal enters the power saving mode and/or finishes the power saving mode.

The device 800 corresponds to the narrowband internet of things device in the method embodiment, and the device 800 may be the narrowband internet of things device in the method embodiment, or a chip or a functional module inside the narrowband internet of things device in the method embodiment. The respective units of the apparatus 800 are adapted to perform the respective steps performed by the terminal device in the method embodiments shown in fig. 2 to 3.

Wherein the conversion unit 810 may be at least one processor. The transmitting unit 820 may be a transceiver or an interface circuit.

The apparatus 800 may further comprise a storage unit for storing data and/or signaling, and the transforming unit 810, the sending unit 820 may interact or be coupled with the storage unit, e.g. read or invoke the data and/or signaling in the storage unit, to cause the method of the above embodiments to be performed.

The above units may exist independently or may be integrated in whole or in part.

At least one embodiment of the present disclosure provides a network device. Fig. 9 is a schematic structural diagram of a network device according to an embodiment of the disclosure. As shown in fig. 9, the apparatus includes a receiving unit 910 and an analyzing unit 920. The receiving unit is used for receiving a plurality of groups of small data packets sent by the narrowband internet of things terminal when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode; the analysis unit is used for analyzing the groups of small data packets into pictures.

Apparatus 900 corresponds to a network device in a method embodiment, and apparatus 900 may be a network device in a method embodiment, or a chip or a functional module inside a network device in a method embodiment. The respective units of the apparatus 900 are adapted to perform the respective steps performed by the network device in the method embodiments shown in fig. 4 and 5.

Wherein the parsing unit 920 may be at least one processor. The transceiver unit 920 may be a transceiver or an interface circuit.

The receiving unit 910 may be a transceiver unit formed by a receiving unit and a transmitting unit, and the transmitting unit is configured to perform a step of transmitting by a network device, for example, to transmit information to other devices; and the receiving unit is used for executing the step of receiving by the network equipment, for example, receiving the information sent by other equipment. The transmitting unit may be a transmitter or an interface circuit and the receiving unit may be a receiver or an interface circuit.

The apparatus 900 may further comprise a storage unit for storing data and/or signaling, and the parsing unit 920, the receiving unit 910 may interact or be coupled with the storage unit, e.g. read or call the data and/or signaling in the storage unit, so that the method of the above embodiment is performed.

At least one embodiment of the present disclosure provides a communication device. The communication device includes: at least one processor; and at least one memory for storing executable instructions of the processor; the processor is configured to perform the data transmission method of any of the embodiments shown in fig. 2 to 6 described above via execution of executable instructions. The communication means may be, for example, a terminal device or a network device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

At least one embodiment of the present disclosure provides a network device. The network device includes a processor and a memory. The memory is used to store executable instructions of the processor. The processor is configured to perform the data transmission method of any of the embodiments shown in fig. 4 to 5 described above via execution of executable instructions.

It is to be appreciated that the processor described above can be a central processing unit (central processing unit, CPU), but also other general purpose processors, digital signal processors (digitalsignal processor, DSP), application specific integrated circuits (application specific integratedcircuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory described above can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a programmable read-only memory (programmableROM, PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory, among others. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions in accordance with the embodiments of the present disclosure are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

The embodiment of the disclosure also provides a communication system, which comprises: the communication apparatus, such as the terminal device and the network device, further includes other communication devices. For example, the communication system comprises an NR-light terminal device, a non-NR-light terminal device and an access network device.

The disclosed embodiments also provide a computer readable medium storing a computer program code comprising instructions for performing the data transmission method of the disclosed embodiments in the above method. The readable medium may be read-only memory (ROM) or random access memory (random access memory, RAM), to which embodiments of the present disclosure are not limited.

The present disclosure also provides a computer-readable storage medium having stored thereon a computer program, on which a program product is stored that enables the method described herein above to be implemented. In some possible embodiments, the aspects of the invention may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the invention as described in the "exemplary method" section of this specification, when the program product is run on the terminal device.

A program product for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read-only memory (CD-ROM) and comprise program code and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The embodiment of the disclosure also provides a system chip, which comprises: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, pins or circuitry, etc. The processing unit may execute computer instructions to cause a chip within the communication device to perform any of the methods of transmitting initial access configuration information provided by the embodiments of the present disclosure described above.

For example, the communication apparatus including the terminal device and the network device of any of the embodiments provided in the above-described embodiments of the present disclosure may include the system chip.

For example, the computer instructions are stored in a storage unit.

For example, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit in the terminal located outside the chip, such as a ROM or other type of static storage device, a RAM, etc., that may store static information and instructions. The processor mentioned in any of the above may be a CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of the program of the above-mentioned method for transmitting initial access configuration information. The processing unit and the storage unit may be decoupled and respectively disposed on different physical devices, and the respective functions of the processing unit and the storage unit are implemented by wired or wireless connection, so as to support the system chip to implement the various functions in the foregoing embodiments. Alternatively, the processing unit and the memory may be coupled to the same device.

It will be appreciated that the memory in embodiments of the disclosure may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

The terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The terms "upstream" and "downstream" appearing in the present disclosure are used to describe a direction of data/information transmission in a specific scenario, for example, an "upstream" direction generally refers to a direction of data/information transmission from a terminal to a network side, or a direction of distributed unit transmission to a centralized unit, and a "downstream" direction generally refers to a direction of data/information transmission from a network side to a terminal, or a direction of centralized unit transmission to a distributed unit, and it is understood that "upstream" and "downstream" are only used to describe a direction of data/information transmission, and the apparatus for specific start and stop of data/information transmission is not limited.

Various objects such as various messages/information/devices/network elements/systems/devices/actions/operations/processes/concepts may be named in the present disclosure, and it should be understood that these specific names do not constitute limitations on related objects, and that the named names may be changed according to the scenario, context, or usage habit, etc., and understanding of technical meaning of technical terms in the present disclosure should be mainly determined from functions and technical effects that are embodied/performed in the technical solution.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in the present disclosure, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or 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 each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in each embodiment of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present disclosure may be embodied in essence or a part contributing to the prior art or a part of the technical solution, or in the form of a software product stored in a storage medium, including several instructions to cause 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 various embodiments of the present disclosure. And the aforementioned storage medium includes: u disk, mobile hard disk, read-only memory (ROM), random access.

The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it should be covered in the protection scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A data transmission method, comprising:

the terminal of the narrowband Internet of things converts the picture into text data;

determining whether the narrowband internet of things terminal enters a power saving mode according to a discontinuous reception timer;

and when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, the text data packet is transmitted to the network equipment through the RRC connection release message and the follow-up transmission of the control plane in the form of a small data packet.

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

and when the discontinuous reception timer is overtime, the narrowband internet of things terminal enters a power saving mode, and the text data is transmitted to an application server in the form of small data packets through the following transmission of a control surface.

3. The method according to claim 2, wherein the method further comprises:

starting a periodic tracking area timer, and timing the duration of the inactive state of the narrowband internet of things terminal;

and when the periodical tracking area timer is overtime, the narrowband internet of things terminal ends the power saving mode, and the text data is transmitted to the application server in the form of small data packets through the following transmission of the control surface.

4. A method according to any one of claims 1-3, wherein the method further comprises:

starting an inactivity timer to time the duration of the inactivity state of the narrowband internet-of-things terminal;

and when the inactivity timer expires, the narrowband internet of things terminal enters an idle mode.

5. The method according to claim 4, wherein the method further comprises:

the method comprises the steps that a narrowband internet of things terminal initiates a context suspension flow of the narrowband internet of things terminal to network equipment;

and the narrowband internet of things terminal responds to the RRC connection release message sent by the base station after the inactivity timer of the narrowband internet of things terminal is overtime, and the RRC connection is established with the network equipment.

6. The method of claim 1, wherein the small data packets are 50-200 bytes in size.

7. A data transmission method, comprising:

the network equipment receives a plurality of groups of small data packets sent by the narrowband internet of things terminal when entering a power saving mode and/or ending the power saving mode;

and the application server of the network equipment analyzes the multiple groups of small data packets into pictures.

8. The method of claim 7, wherein the method further comprises:

and the base station starts a discontinuous reception timer for the narrowband internet of things terminal to time the duration of the inactive state of the narrowband internet of things terminal.

9. The method of claim 7, wherein the network device comprises a base station and a core network, the method further comprising:

the base station detects the inactivity of the narrowband internet of things terminal, and starts an inactivity timer to count the duration of the inactivity state of the narrowband internet of things terminal;

after the inactivity timer is overtime, the base station initiates a context suspension flow of the narrowband Internet of things terminal to the mobility management entity MME;

and after finishing the context suspension processing of the narrowband internet of things terminal, the base station sends a Radio Resource Control (RRC) connection release message to the narrowband internet of things terminal.

10. The method according to claim 9, wherein the method further comprises:

After the inactivity timer is overtime, the base station sends a context suspension request of the narrowband internet of things terminal to the MME, so that the MME triggers the service gateway S-GW to release the load of the narrowband internet of things terminal;

and the base station receives a context suspension response of the narrowband internet of things terminal, which is sent by the MME after the bearer of the narrowband internet of things terminal is released.

11. The method of claim 10, wherein the network device further comprises a service capability opening function SCEF, the method further comprising:

the base station sends the plurality of sets of data to the application server via MME and SCEF.

12. The utility model provides a narrowband thing networking terminal which characterized in that includes:

the conversion unit is used for converting the pictures into text data;

a sending unit, configured to send the text data packet to a network device through RRC connection release message and perform channel-associated transmission of a control plane in the form of a small data packet when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode;

the sending unit is further configured to determine, according to the discontinuous reception timer, whether the narrowband internet of things terminal enters a power saving mode.

13. A network device, comprising:

The receiving unit is used for receiving a plurality of groups of small data packets sent by the narrowband internet of things terminal when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode;

and the analysis unit is used for analyzing the plurality of groups of small data packets into pictures.

14. A communication system, comprising:

the narrowband internet of things terminal is used for converting pictures into text data, and when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode, the text data is grouped and transmitted to the network equipment in the form of small data packets through the following transmission of the control surface;

the base station is used for receiving a plurality of groups of small data packets sent by the narrowband internet of things terminal when the narrowband internet of things terminal enters a power saving mode and/or ends the power saving mode;

a mobility management entity and a service capability opening function, which are used for receiving the multiple groups of small data packets sent by the base station and sending the multiple groups of small data packets to an application server;

and the application server is used for analyzing the plurality of groups of small data packets into pictures.

15. A communication device, comprising:

at least one processor; and

at least one memory for storing executable instructions of the processor;

wherein the processor is configured to perform the data transmission method of any one of claims 1 to 6 via execution of the executable instructions.

16. A computer-readable storage medium, on which a computer program or instructions is stored, characterized in that the computer program or instructions, when executed by a processor, implements the data transmission method of any one of claims 1-6 or 7-11.