System information transmission method and device

Abstract

The present application relates to a system information transmission method. The system information transmission method comprises: a terminal device receives a narrow band system information block 1 (SIB1-NB), a transmission period of the SIB1-NB being equal to m times a first frame structure period, and m being a positive integer. The first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, wherein the ratio of the number of the valid radio frames to the number of the invalid radio frames is 1:N, and N is a positive integer. The valid radio frames comprise radio frames that are available for narrow band Internet of Things (NB-IoT), and the invalid radio frames comprise radio frames that are unavailable for the NB-IoT. In embodiments of the present application, a special frame structure period, i.e., the first frame structure period, is designed, and under the special frame structure, a transmission method of system information in an NB-IoT system is designed, thereby solving the problem of system information transmission under the special frame structure.

Description

System information transmission method and device TECHNICAL FIELD

[0001] The present application relates to the field of communication, and more particularly, to a system information transmission method and device. BACKGROUND

[0002] When Narrow Band Internet of Things (NB-IOT) is applied to a Non-Terrestrial Network (NTN) scenario, a satellite operator can have some restrictions on the use of spectrum, for example, in some cases, the spectrum of the NTN can only be used for NB-IOT services for part of the time, and continuous uninterrupted use cannot be achieved, and under such conditions, how to transmit information such as system information (SI) is a technical problem to be solved.

[0003] SUMMARY

[0004] Embodiments of the present application provide a system information transmission method and device.

[0005] Embodiments of the present application provide a system information transmission method, comprising:

[0006] The terminal device receives a narrow-band system information block 1 (SIB1-NB), and a transmission period of the SIB1-NB is equal to m times of a first frame structure period, m being a positive integer.

[0007] The first frame structure period includes one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames is 1:N, N being a positive integer, the valid radio frame includes a radio frame that can be used for NB-IoT, and the invalid radio frame includes a radio frame that cannot be used for NB-IoT.

[0008] Embodiments of the present application provide a system information transmission method, comprising:

[0009] The terminal device receives SI in an SI receiving window, and a length of the SI receiving window contains at least n first frame structure periods, n being a positive integer.

[0010] The first frame structure period includes one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames is 1:N, N being a positive integer, the valid radio frame includes a radio frame that can be used for NB-IoT, and the invalid radio frame includes a radio frame that cannot be used for NB-IoT.

[0011] Embodiments of the present application provide a system information transmission method, comprising:

[0012] The terminal device determines uplink transmission time information in the NB-IoT system;

[0013] The terminal device performs uplink transmission based on the uplink transmission time information.

[0014] Embodiments of the present application provide a system information transmission method, comprising:

[0015] The network device transmits SIB1-NB, a transmission period of the SIB1-NB being equal to m times of a first frame structure period, m being a positive integer;

[0016] The first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame comprises a radio frame available for narrowband internet of things (NB-IoT), and the invalid radio frame comprises a radio frame unavailable for NB-IoT.

[0017] Embodiments of the present application provide a system information transmission method, comprising:

[0018] The network device transmits SI in an SI receiving window, a length of the SI receiving window containing at least n first frame structure periods, n being a positive integer;

[0019] The first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame comprises a radio frame available for NB-IoT, and the invalid radio frame comprises a radio frame unavailable for NB-IoT.

[0020] Embodiments of the present application provide a terminal device, comprising:

[0021] The first transceiver module is configured to receive SIB1-NB, a transmission period of the SIB1-NB being equal to m times of a first frame structure period, m being a positive integer;

[0022] The first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame comprises a radio frame available for narrowband internet of things (NB-IoT), and the invalid radio frame comprises a radio frame unavailable for NB-IoT.

[0023] Embodiments of the present application provide a terminal device, comprising:

[0024] a second transceiver module, configured to receive SI in an SI receiving window, a length of the SI receiving window containing at least n first frame structure periods, n being a positive integer;

[0025] wherein the first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame comprises a radio frame available for NB-IoT, and the invalid radio frame comprises a radio frame unavailable for NB-IoT.

[0026] Embodiments of the present application provide a terminal device, comprising:

[0027] a first determining module, configured to determine uplink transmission time information in an NB-IoT system;

[0028] a first transmitting module, configured to perform uplink transmission based on the uplink transmission time information.

[0029] Embodiments of the present application provide a network device, comprising:

[0030] a third transceiver module, configured to transmit SIB1-NB, a transmission period of the SIB1-NB being equal to m times of a first frame structure period, m being a positive integer;

[0031] wherein the first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame comprises a radio frame available for NB-IoT, and the invalid radio frame comprises a radio frame unavailable for NB-IoT.

[0032] Embodiments of the present application provide a network device, comprising:

[0033] a fourth transceiver module, configured to transmit SI in an SI receiving window, a length of the SI receiving window containing at least n first frame structure periods, n being a positive integer;

[0034] wherein the first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame comprises a radio frame available for NB-IoT, and the invalid radio frame comprises a radio frame unavailable for NB-IoT.

[0035] An embodiment of the present application provides a terminal device, comprising a transceiver, a processor and a memory. The memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to invoke and run the computer program stored in the memory, so that the terminal device performs the system information transmission method.

[0036] An embodiment of the present application provides a network device, comprising a transceiver, a processor and a memory. The memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to invoke and run the computer program stored in the memory, so that the network device performs the system information transmission method.

[0037] An embodiment of the present application provides a chip, which is configured to implement the system information transmission method.

[0038] Specifically, the chip comprises a processor, which is configured to invoke and run a computer program from a memory, so that a device installed with the chip performs the system information transmission method.

[0039] An embodiment of the present application provides a computer readable storage medium, which is configured to store a computer program, and the computer program causes a device to perform the system information transmission method when the computer program is run by the device.

[0040] An embodiment of the present application provides a computer program product, which comprises computer program instructions, and the computer program instructions cause a computer to perform the system information transmission method.

[0041] An embodiment of the present application provides a computer program, which causes a computer to perform the system information transmission method when the computer program is run by the computer.

[0042] An embodiment of the present application designs a special frame structure period, i.e., a first frame structure period, the first frame structure period comprises valid wireless frames and invalid wireless frames, wherein the valid wireless frames can be used for NB-IoT, the invalid wireless frames cannot be used for the valid wireless frames of NB-IoT, and the ratio of the number of valid wireless frames to the number of invalid wireless frames in the first frame structure period is 1:N (N is a positive integer). Under such a special frame structure, an embodiment of the present application designs a transmission mode of system information in the NB-IoT system, so as to solve the problem of transmission of system information under the special frame structure. BRIEF DESCRIPTION OF DRAWINGS

[0043] FIG. 1 exemplarily shows a communication system 100.

[0044] FIG. 2A is a schematic diagram I of a special frame structure according to an embodiment of the present application.

[0045] FIG. 2B is a schematic diagram II of a special frame structure according to an embodiment of the present application.

[0046] FIG. 3 is a schematic flow chart of a system information transmission method 300 according to an embodiment of the present application.

[0047] FIG. 4 is a schematic flow chart of a system information transmission method 400 according to an embodiment of the present application.

[0048] FIG. 5A is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application.

[0049] FIG. 5B is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application.

[0050] FIG. 5C is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application.

[0051] FIG. 5D is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application.

[0052] FIG. 5E is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application.

[0053] FIG. 6 is a schematic flow chart of a system information transmission method 600 according to an embodiment of the present application.

[0054] FIG. 7 is a schematic flow chart of a system information transmission method 700 according to an embodiment of the present application.

[0055] FIG. 8A is a schematic diagram of transmitting other system information according to an embodiment of the present application.

[0056] FIG. 8B is a schematic diagram of transmitting other system information according to an embodiment of the present application.

[0057] FIG. 9 is a schematic flow chart of a transmission method 900 according to an embodiment of the present application.

[0058] FIG. 10A is a schematic diagram of a first determination manner of a transmission time length according to an embodiment of the present application.

[0059] FIG. 10B is a schematic diagram of a determination manner of a time gap length according to an embodiment of the present application.

[0060] FIG. 11 is a schematic block diagram of a terminal device 1100 according to an embodiment of the present application.

[0061] FIG. 12 is a schematic block diagram of a terminal device 1200 according to an embodiment of the present application.

[0062] FIG. 13 is a schematic block diagram of a terminal device 1300 according to an embodiment of the present application.

[0063] FIG. 14 is a schematic block diagram of a network device 1400 according to an embodiment of the present application.

[0064] FIG. 15 is a schematic block diagram of a network device 1500 according to an embodiment of the present application.

[0065] FIG. 16 is a schematic structural diagram of a communication device 1600 according to an embodiment of the present application.

[0066] FIG. 17 is a schematic structural diagram of a chip 1700 according to an embodiment of the present application. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0068] The technical solutions in the embodiments of the present application can be applied to various communication systems, such as a Long Term Evolution (LTE) system, an Advanced long term evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, a LTE-based access to unlicensed spectrum (LTE-U) system, a NR-based access to unlicensed spectrum (NR-U) system, a Non-Terrestrial Networks (NTN) system, a Universal Mobile Telecommunication System (UMTS), a Wireless Local Area Networks (WLAN), a Wireless Fidelity (WiFi), a 5th-Generation (5G) system, or other communication systems, etc.

[0069] Generally, a conventional communication system supports a limited number of connections, which is easy to implement. However, with the development of communication technology, a mobile communication system will not only support conventional communication, but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0070] In an embodiment, the communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) network deployment scenario.

[0071] In an embodiment, the communication system in the embodiments of the present application can be applied to an unlicensed spectrum, which can also be regarded as a shared spectrum, or can be applied to a licensed spectrum, which can also be regarded as a non-shared spectrum.

[0072] The embodiments of the present application combine network devices and terminal devices to describe various embodiments, wherein the terminal device can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device, etc.

[0073] The terminal device can be a station (STA) in a WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0074] In the embodiments of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0075] In the embodiments of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical treatment, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc.

[0076] By way of example and not limitation, in the embodiments of the present application, the terminal device can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term for devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes, etc. The wearable device is a portable device that can be directly worn on the body or integrated into the clothes or accessories of the user. The wearable device is not only a hardware device, but also has powerful functions through software support and data interaction and cloud interaction. The general wearable smart device includes devices with full functions, large size, and the ability to realize complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and devices that focus on a certain type of application function and need to be used in cooperation with other devices, such as smart phones, such as various smart wristbands, smart jewelry, etc.

[0077] In the embodiments of the present application, the network device can be a device for communicating with the mobile device, which can be an access point (AP) in a WLAN, an evolved node B (eNB or eNodeB) in LTE, or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device in an NR network (gNB) or a future evolved PLMN network or a network device in an NTN network, etc.

[0078] By way of example and not limitation, in embodiments of the present application, a network device can have a mobile characteristic, for example, the network device can be a mobile device. Alternatively, the network device can be a satellite, a balloon station. For example, the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Alternatively, the network device can also be a base station disposed at a location on land, water, etc.

[0079] In embodiments of the present application, a network device can serve a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell. The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cell can include a metro cell, a micro cell, a pico cell, a femto cell, etc., and these small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.

[0080] FIG. 1 illustrates a communication system 100. The communication system includes one network device 110 and two terminal devices 120. In an implementation, the communication system 100 can include multiple network devices 110, and each network device 110 can include other numbers of terminal devices 120 within its coverage, which is not limited in embodiments of the present application.

[0081] In an implementation, the communication system 100 can also include a mobility management entity (MME), an access and mobility management function (AMF), and other network entities, which are not limited in embodiments of the present application.

[0082] The network device can include an access network device and a core network device. That is, the wireless communication system also includes a plurality of core networks for communicating with the access network device. The access network device can be an evolved node B (eNB or e-NodeB) macro base station, a micro base station (also referred to as a "small base station"), a pico base station, an access point (AP), a transmission point (TP), or a new generation Node B (gNodeB) in a long-term evolution (LTE) system, a next radio (NR) system, or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0083] It should be understood that the devices with communication functions in the network / system in the embodiments of the present application can be referred to as communication devices. For example, the communication system shown in FIG. 1 can include network devices and terminal devices with communication functions. The network devices and terminal devices can be specific devices in the embodiments of the present application, which will not be described here. The communication devices can also include other devices in the communication system, such as network controllers, mobile management entities, and other network entities. The embodiments of the present application do not limit the above.

[0084] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document is only used to describe the association relationship between the associated objects. For example, A and / or B can represent three cases: A alone, A and B together, and B alone. In addition, the character " / " generally represents an "or" relationship between the associated objects.

[0085] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, indirect indication, or an indication with an associated relationship. For example, A indicates B, which can mean that B can be obtained directly through A; or A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or A and B have an associated relationship.

[0086] In the description of the embodiments of the present application, the term "corresponding" can represent a direct or indirect corresponding relationship between the two, or an associated relationship between the two, or an indication and being indicated, configuration and being configured, and the like.

[0087] When NB-IoT is applied to NTN scenarios, the satellite operator can have some restrictions on the use of spectrum, for example, in some cases, the spectrum of NTN can only be used for NB-IoT services in part of the time, and it is impossible to achieve continuous and uninterrupted use, under such conditions, the embodiments of the present application consider a special frame structure, that is, only part of the wireless frames in time can be used for NB-IoT services, and the remaining wireless frames cannot be used for NB-IoT services. In the embodiments of the present application, the wireless frame that can be used for NB-IoT is referred to as an effective wireless frame, and the wireless frame that cannot be used for NB-IoT is referred to as an invalid wireless frame. Under such a special frame structure, the transmission of the NB-IoT system is greatly affected. For example, due to the special frame structure, the wireless frame available for transmitting system information is not continuous in time domain, which affects the transmission of system information. For example, in the NB-IoT system, due to the low cost of the UE side, the crystal oscillator will have a time-frequency shift due to heating during long-time uplink transmission, so it is necessary to interrupt the uplink transmission and let the UE re-synchronize the downlink; when the special frame structure is introduced in the NB-IoT system, the length of the uplink transmission and / or the gap also need to be designed based on the special frame structure.

[0088] In the special frame structure mode, the NTN system cannot continuously occupy the bandwidth, so that the NTN frame structure is effective in part of the time. The ratio of the effective wireless frame (system frame or radio frame, SFN) and the invalid wireless frame included in a special frame structure period (hereinafter referred to as the first frame structure period) is denoted as 1:N, N is a positive integer. The value of N can be determined by the network.

[0089] Figure 2A is a schematic diagram of a special frame structure according to an embodiment of the present application. In this example, N = 3, i.e. the ratio of the number of valid wireless frames and invalid wireless frames included in a first frame structure period is 1:3, meaning that there is one valid wireless frame for every three invalid wireless frames. It should be noted that the number of valid wireless frames and invalid wireless frames in a first frame structure period can be adjusted in proportion, for example, Figure 2B is a schematic diagram of a special frame structure according to an embodiment of the present application. In this example, the ratio of the number of valid wireless frames and invalid wireless frames included in a first frame structure period is the same as in the example of Figure 2A, but the number of valid wireless frames and invalid wireless frames is different from the example of Figure 2A. In the example of Figure 2A, a first frame structure period contains 4 wireless frames, of which 1 is a valid wireless frame and 3 are invalid wireless frames, and has a length of 40ms; in the example of Figure 2B, a first frame structure period contains 8 wireless frames, of which 2 are valid wireless frames and 6 are invalid wireless frames, and has a length of 80ms. In the following embodiments, an example is given in which one valid wireless frame is included in a first frame structure period; any solution according to an embodiment of the present application can be extended to other cases, for example, a case in which a plurality of valid wireless frames are included in a first frame structure period.

[0090] On the basis of the special frame structure mode described above, an embodiment of the present application proposes a system information transmission method, which implements transmission of a narrowband system information block 1 (System Information Block Type 1-Narrowband, SIB1-NB). Figure 3 is a schematic flow chart of a system information transmission method 300 according to an embodiment of the present application, comprising:

[0091] S310, the network device transmits a SIB1-NB, the transmission period of the SIB1-NB being equal to m times a first frame structure period, m being a positive integer;

[0092] wherein the first frame structure period includes one or more valid wireless frames and one or more invalid wireless frames, the ratio of the number of valid wireless frames to the number of invalid wireless frames being 1:N, N being a positive integer; the valid wireless frame including a wireless frame that can be used for NB-IoT, and the invalid wireless frame including a wireless frame that cannot be used for NB-IoT.

[0093] In the above manner, one or more first frame structure periods can be included in a transmission period of a SIB1-NB; since the first frame structure period includes a valid wireless frame, it is possible to ensure that there is a valid wireless frame that can be used for NB-IoT transmission in a transmission period of a SIB1-NB, thereby ensuring correct transmission of the SIB1-NB.

[0094] In some embodiments, m is equal to 2 raised to the power of x, x being a positive integer.

[0095] The first frame structure period includes one or more valid radio frames, which can be used for NB-IoT transmission.

[0096] In some embodiments, the SIB1-NB is transmitted in one or more valid radio frames in a first frame structure period within a transmission period of the SIB1-NB.

[0097] The valid radio frame includes a plurality of subframes, each of which can be an uplink subframe, a downlink subframe, or a flexible subframe.

[0098] In some embodiments, in the case that a plurality of valid radio frames are included in the first frame structure period, the SIB1-NB is transmitted in the plurality of valid radio frames or in part of the plurality of valid radio frames.

[0099] In some embodiments, the plurality of valid radio frames are continuous or discontinuous. That is, the SIB1-NB is transmitted in the continuous plurality of valid radio frames or in the discontinuous plurality of valid radio frames.

[0100] In some embodiments, part of the plurality of valid radio frames are continuous or discontinuous. That is, the SIB1-NB is transmitted in part of the plurality of valid radio frames, and the part of the plurality of valid radio frames are continuous; or the SIB1-NB is transmitted in part of the plurality of valid radio frames, and the part of the plurality of valid radio frames are discontinuous.

[0101] In some embodiments, the SIB1-NB is transmitted in one or more subframes in a valid radio frame.

[0102] In some embodiments, the plurality of subframes are continuous or discontinuous. That is, in a valid radio frame, there can be a plurality of subframes in which the SIB1-NB is transmitted, and the plurality of subframes are continuous or discontinuous.

[0103] In some embodiments, N = 3, that is, the ratio of the number of valid radio frames to the number of invalid radio frames included in a first frame structure period is 1:3. The length of the first frame structure period can have multiple values. For example, the first frame structure period is 40 milliseconds, and the first frame structure period includes 1 valid radio frame and 3 invalid radio frames; for another example, the first frame structure period is 80 milliseconds, and the first frame structure period includes 2 valid radio frames and 6 invalid radio frames.

[0104] In some embodiments, the ratio of the number of valid radio frames to the number of invalid radio frames included in a first frame structure period is 1:3, and the length of the first frame structure period is 40 ms. If the time for completing one SIB1-NB transmission is 160 ms, then two subframes in a valid radio frame in the first frame structure period are used to carry SIB1-NB. In this case, within the time for completing one SIB1-NB transmission, there are 4 first frame structure periods, each of which includes 1 valid radio frame, and 2 subframes in each valid radio frame are used to carry SIB1-NB. Thus, there are 8 subframes in total within the time for completing one SIB1-NB transmission that are used to carry SIB1-NB. The 2 subframes in each valid radio frame that are used to carry SIB1-NB can be consecutive or non-consecutive.

[0105] In some embodiments, the ratio of the number of valid radio frames to the number of invalid radio frames included in a first frame structure period is 1:3, and the length of the first frame structure period is 80 ms. If the time for completing one SIB1-NB transmission is 160 ms, then two subframes in a valid radio frame in the first frame structure period are used to carry SIB1-NB. In this case, within the time for completing one SIB1-NB transmission, there are 2 first frame structure periods, each of which includes 2 valid radio frames, and 2 subframes in one of the valid radio frames are used to carry SIB1-NB. Thus, there are 4 subframes in total within the time for completing one SIB1-NB transmission that are used to carry SIB1-NB. The 2 subframes in each valid radio frame that are used to carry SIB1-NB can be consecutive or non-consecutive.

[0106] In some embodiments, the ratio of the number of valid radio frames to the number of invalid radio frames included in a first frame structure period is 1:7. The length of the first frame structure period can have various values. For example, the length of the first frame structure period is 80 ms, and the first frame structure period includes 1 valid radio frame and 7 invalid radio frames. For another example, the length of the first frame structure period is 160 ms, and the first frame structure period includes 2 valid radio frames and 14 invalid radio frames.

[0107] In some embodiments, if the time for completing one SIB1-NB transmission is 160 milliseconds, and the ratio of the number of valid radio frames to the number of invalid radio frames included in the first frame structure period is 1:7, and the first frame structure period is 80 milliseconds, then 4 subframes in the valid radio frames in the first frame structure period are used to carry SIB1-NB. In this case, within the time for completing one SIB1-NB transmission, 2 first frame structure periods are included, 1 valid radio frame is included in each first frame structure period, and 4 subframes in each valid radio frame are used to carry SIB1-NB. Thus, a total of 8 subframes within the time for completing one SIB1-NB transmission are used to carry SIB1-NB. The 4 subframes in each valid radio frame that are used to carry SIB1-NB can be continuous or non-continuous.

[0108] In some embodiments, if the time for completing one SIB1-NB transmission is 640 milliseconds, and the ratio of the number of valid radio frames to the number of invalid radio frames included in the first frame structure period is 1:7, and the first frame structure period is 80 milliseconds, then 1 subframe in the valid radio frames in the first frame structure period is used to carry SIB1-NB. In this case, within the time for completing one SIB1-NB transmission, 8 first frame structure periods are included, 1 valid radio frame is included in each first frame structure period, and 1 subframe in each valid radio frame is used to carry SIB1-NB. Thus, a total of 8 subframes within the time for completing one SIB1-NB transmission are used to carry SIB1-NB.

[0109] In some embodiments, if the first frame structure period includes 8 continuous valid radio frames, then the 8 continuous valid radio frames carry SIB1-NB, and 1 subframe in each valid radio frame is used to carry SIB1-NB.

[0110] In some embodiments, if the first frame structure period includes M valid radio frames (M is greater than 1), then SIB1-NB can be transmitted in W valid radio frames, and W is less than or equal to M. The M valid radio frames in the first frame structure period can be continuous or non-continuous. The W valid radio frames used to transmit SIB1-NB can be continuous or non-continuous. When SIB1-NB is transmitted in W valid radio frames, one subframe or multiple subframes in each valid radio frame can be used to carry SIB1-NB. When multiple subframes are used, the multiple subframes can be continuous or non-continuous. For example, if the first frame structure period includes 8 valid radio frames, then SIB1-NB can be transmitted in 4 continuous valid radio frames or 4 non-continuous valid radio frames of the 8 valid radio frames.

[0111] In the above examples, the first frame structure period, the proportion 1:N of the valid wireless frames and the invalid wireless frames included in the first frame structure period, which valid wireless frames in the first frame structure period are used to carry the SIB1-NB, and which subframes in the valid wireless frames are used to carry the SIB1-NB can be specified by a protocol, or can be indicated by the network device to the terminal device.

[0112] For example, in some embodiments, the network device sends a narrowband master indication block (MIB-NB) indicating at least one of the following:

[0113] the first frame structure period;

[0114] N;

[0115] the valid wireless frame in the first frame structure period used to carry the SIB1-NB;

[0116] the subframe in the valid wireless frame used to carry the SIB1-NB.

[0117] According to the above MIB, the terminal device can read out the above information of the first frame structure period, the proportion 1:N of the valid wireless frames and the invalid wireless frames included in the first frame structure period, which valid wireless frames in the first frame structure period are used to carry the SIB1-NB, and which subframes in the valid wireless frames are used to carry the SIB1-NB, and receive the SIB1-NB sent by the network device based on the information.

[0118] Accordingly, based on the special frame structure mode proposed in the embodiments of the present application, the embodiments of the present application further propose a system information transmission method for realizing the reception of the SIB1-NB by the terminal device. FIG. 4 is a schematic flowchart of a system information transmission method 400 according to an embodiment of the present application, which comprises:

[0119] S410, the terminal device receives the SIB1-NB, and the transmission period of the SIB1-NB is equal to m times of the first frame structure period, where m is a positive integer;

[0120] wherein the first frame structure period includes one or more valid wireless frames and one or more invalid wireless frames, the proportion of the number of the valid wireless frames to the number of the invalid wireless frames is 1:N, and N is a positive integer; the valid wireless frame includes a wireless frame that can be used for narrowband Internet of Things (NB-IoT), and the invalid wireless frame includes a wireless frame that cannot be used for NB-IoT.

[0121] In the above manner, one or more first frame structure periods can be included in one transmission period of the SIB1-NB; since the first frame structure period includes valid radio frames, the terminal device can receive valid radio frames for SIB1-NB transmission in one transmission period of the SIB1-NB, thereby ensuring correct reception of the SIB1-NB.

[0122] In some embodiments, m is equal to 2 raised to the power of x, where x is a positive integer.

[0123] In some embodiments, the SIB1-NB is transmitted in one or more valid radio frames in the first frame structure period in the transmission period.

[0124] In some embodiments, in the case where a plurality of valid radio frames are included in the first frame structure period, the SIB1-NB is transmitted in the plurality of valid radio frames or in part of the plurality of valid radio frames.

[0125] In some embodiments, the plurality of valid radio frames are continuous or non-continuous.

[0126] In some embodiments, part of the plurality of valid radio frames are continuous or non-continuous.

[0127] In some embodiments, the SIB1-NB is transmitted in one or more subframes in a valid radio frame.

[0128] In some embodiments, the plurality of subframes are continuous or non-continuous.

[0129] In some embodiments, N = 3, i.e., the ratio of the number of valid radio frames to the number of invalid radio frames included in one first frame structure period is 1:3.

[0130] In some embodiments, in the case where the first frame structure period is 40 milliseconds and the time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in each valid radio frame in the first frame structure period are used to carry the SIB1-NB. The two subframes used to carry the SIB1-NB in each valid radio frame can be continuous or non-continuous.

[0131] In some embodiments, in the case where the first frame structure period is 80 milliseconds and the time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in one valid radio frame in the first frame structure period are used to carry the SIB1-NB. The two subframes used to carry the SIB1-NB in each valid radio frame can be continuous or non-continuous.

[0132] In some embodiments, N=7, i.e., the ratio of the number of valid radio frames to the number of invalid radio frames included in one first frame structure period is 1:7.

[0133] In some embodiments, in the case that the first frame structure period is 80 milliseconds and the time for completing one SIB1-NB transmission is 160 milliseconds, 4 subframes in the valid radio frames in the first frame structure period are used to carry SIB1-NB. Among them, the 4 subframes in each valid radio frame used to carry SIB1-NB can be continuous or discontinuous.

[0134] In some embodiments, in the case that the first frame structure period is 80 milliseconds and the time for completing one SIB1-NB transmission is 640 milliseconds, 1 subframe in the valid radio frames in the first frame structure period is used to carry SIB1-NB.

[0135] In some embodiments, in the case that the first frame structure period contains 8 continuous valid radio frames, the 8 continuous valid radio frames carry SIB1-NB, and 1 subframe in each valid radio frame is used to carry SIB1-NB.

[0136] In some embodiments, in the case that there are M valid radio frames (M is greater than 1) in the first frame structure period, SIB1-NB can be transmitted in W valid radio frames, W is less than or equal to M. Among them, the M valid radio frames in the first frame structure period can be continuous or discontinuous. The W valid radio frames used to transmit SIB1-NB can be continuous or discontinuous. When SIB1-NB is transmitted in W valid radio frames, one subframe in each valid radio frame can be occupied or multiple subframes can be occupied; when multiple subframes are occupied, the multiple subframes can be continuous or discontinuous. For example, the first frame structure period contains 8 valid radio frames, SIB1-NB is transmitted in 4 continuous valid radio frames in the 8 valid radio frames or in 4 discontinuous valid radio frames in the 8 valid radio frames.

[0137] In some embodiments, the terminal device receives an MIB, and the MIB indicates at least one of the following:

[0138] the first frame structure period;

[0139] N;

[0140] the valid radio frame in the first frame structure period used to carry SIB1-NB;

[0141] the subframe in the valid radio frame used to carry SIB1-NB.

[0142] According to the MIB, the terminal device can read the first frame structure period, the proportion 1:N of the valid radio frames and the invalid radio frames in the first frame structure period, which valid radio frames in the first frame structure period are used to carry the SIB1-NB, and which subframes in the valid radio frames are used to carry the SIB1-NB, and the like, and receive the SIB1-NB sent by the network device based on the information.

[0143] Embodiment 1 is described below with reference to the accompanying drawings.

[0144] Embodiment 1

[0145] This embodiment introduces a transmission and reception method of the SIB1-NB.

[0146] It is assumed that a transmission period of one SIB1-NB is X ms, wherein the value of X can be a power of 2 (2^n) greater than or equal to 256, and it is assumed that the first frame structure period is Y ms, when selecting X and Y, it is necessary to ensure that X is m times of Y, wherein m is an integer. For example, m is a power of 2 (2^n).

[0147] FIG. 5A is a schematic diagram of transmitting the SIB1-NB according to Embodiment 1. As shown in FIG. 5A, it is assumed that X = 2560 ms, the length of the first frame structure period is 40 ms, and the proportion of the number of valid radio frames to the number of invalid radio frames in the first frame structure period is 1:3 (i.e., N = 3). There are four valid radio frames in the 160 ms window for completing one SIB1-NB transmission, and 2 subframes in each valid radio frame are used to transmit the SIB1-NB, so that the total resource for completing one SIB1-NB transmission in 160 ms is 8 subframes. There are 16 SIB1-NB transmission opportunities in the X = 2560 ms transmission period, and the 16 transmission opportunities can be used to realize repeated transmission of the SIB1-NB, thereby enhancing the coverage of the NB-IoT system. In this embodiment, a maximum of 16 repeated transmissions can be supported in the X = 2560 ms transmission period. In the example shown in FIG. 5A, the 2 subframes in the valid radio frame used to transmit the SIB1-NB are continuous, and in this embodiment, the subframes used to transmit the SIB1-NB can also be discontinuous.

[0148] Figure 5B is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application. As shown in Figure 5B, assuming X=2560ms, the length of the first frame structure period is 80ms, and the ratio of the number of valid radio frames to the number of invalid radio frames in the first frame structure period is 1:7 (i.e., N=7). The different frame structures result in a decrease in the number of valid radio frames in 160ms. In order to maintain the same number of transmission opportunities in X=2560ms, more subframes can be used in each valid radio frame to transmit SIB1-NB. In the example shown in Figure 5B, 4 subframe resources are used to transmit SIB1-NB in each valid radio frame, so that the transmission of SIB1-NB can be completed in 160ms under the condition of N=7 special frame structure. In the example shown in Figure 5B, the 4 subframes used to transmit SIB1-NB in the valid radio frame are continuous. In this embodiment, the subframes used to transmit SIB1-NB can also be non-continuous. The advantage of this approach is that using multiple subframes in each valid radio frame to carry SIB1-NB can control the time of SIB1-NB transmission to be within 160ms, thereby leaving more opportunities for repeated transmission in the SIB1-NB transmission period to improve system coverage. The disadvantage is that the occupation of multiple subframes in the valid radio frame reduces the flexibility of resource scheduling of the system. Conversely, when the network does not pursue high coverage, the number of occupied subframes in each valid radio frame can be reduced to obtain more subframe flexibility. For example, as shown in Figure 5C, Figure 5C is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application. In Figure 5C, the time of SIB1-NB transmission can be expanded to 640ms, so that only one subframe in each valid radio frame can be used for SIB1-NB transmission. However, the transmission opportunities in X=2560ms transmission period are reduced to 4, so that a maximum of 4 repeated transmissions can be supported.

[0149] When there are multiple valid radio frames in a first frame structure period, some of the valid radio frames can be selected not to carry SIB1-NB. For example, as shown in FIG. 5D, which is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application, N=3, and there are two valid radio frames in a first frame structure period. When transmitting SIB1-NB, two of the four valid radio frames in 160 ms of one SIB1-NB transmission are not used to carry SIB1-NB. These two valid radio frames not carrying SIB1-NB can be used by the network for other purposes. In the valid radio frames carrying SIB1-NB, one or more subframes can be occupied for SIB1-NB transmission. The number of subframes used for SIB1-NB transmission mainly depends on whether the system needs to have greater coverage gain or greater scheduling flexibility. If the system needs to have greater coverage gain, more subframes in a valid radio frame are used to carry SIB1-NB, for example, to ensure that one SIB1-NB transmission is completed in 160 ms. If greater scheduling flexibility is needed, fewer subframes (for example, only one subframe) in a valid radio frame are used to carry SIB1-NB, but one SIB1-NB transmission takes a longer time. In the example shown in FIG. 5D, the two subframes used for SIB1-NB transmission in a valid radio frame are consecutive. In this embodiment, the subframes used for SIB1-NB transmission can also be non-consecutive.

[0150] In some embodiments, under some frame structures, there are consecutive valid radio frames. For the 16 radio frames in 160 ms of SIB1-NB transmission time, SIB1-NB can be transmitted in the consecutive valid radio frames. For example, in the case where a first frame structure period includes eight consecutive valid radio frames, the eight consecutive valid radio frames carry SIB1-NB, and one subframe in each valid radio frame is used to carry SIB1-NB.

[0151] For example, FIG. 5E is a schematic diagram of transmitting SIB1-NB according to an embodiment of the present application. In the example shown in FIG. 5E, N=3, the length of a first frame structure period is 320 ms, a first frame structure period includes eight consecutive valid radio frames and 24 invalid radio frames, when transmitting SIB1-NB, the time for one SIB1-NB transmission is 160 ms, and then SIB1-NB can be transmitted in the eight consecutive valid radio frames in a first frame structure period, that is, eight of the 16 radio frames are consecutively transmitted. In this case, the consecutively transmitted radio frames correspond to consecutive valid radio frames, so that the terminal can receive SIB1-NB, and SIB1-NB occupies only one subframe in each valid radio frame.

[0152] On the basis of the special frame structure mode proposed in the embodiments of the present application, the embodiments of the present application further propose a system information transmission method, which realizes transmission of other system information in the NB-IoT system except MIB and SIB1-NB. FIG. 6 is a schematic flowchart of a system information transmission method 600 according to an embodiment of the present application, which includes the following steps.

[0153] In S610, the network device transmits SI in an SI receiving window, the length of the SI receiving window containing at least n first frame structure periods, n being a positive integer.

[0154] In the first frame structure period, one or more valid wireless frames and one or more invalid wireless frames are included, the ratio of the number of valid wireless frames to the number of invalid wireless frames being 1:N, N being a positive integer; the valid wireless frame includes a wireless frame that can be used for NB-IoT, and the invalid wireless frame includes a wireless frame that cannot be used for NB-IoT.

[0155] In the above manner, one or more first frame structure periods can be included in one SI receiving window; since the valid wireless frame is included in the first frame structure period, it can be ensured that there is a valid wireless frame that can be used for SI transmission in one SIB1-NB transmission period, thereby ensuring correct transmission of the SI.

[0156] In the above manner, one or more first frame structure periods can be included in one SI receiving window; since the valid wireless frame is included in the first frame structure period, it can be ensured that there is a valid wireless frame that can be used for SI transmission in one SIB1-NB transmission period, thereby ensuring correct transmission of the SI.

[0157] In some embodiments, n is equal to 2 raised to the power of x, x being a positive integer.

[0158] The valid wireless frame includes a plurality of subframes, each subframe being an uplink subframe, a downlink subframe or a flexible subframe.

[0159] In some embodiments, one or more valid wireless frames in the SI receiving window carry the SI.

[0160] In some embodiments, the SI is mapped from a first valid subframe in a first valid wireless frame in the SI receiving window;

[0161] In the above manner, one or more first frame structure periods can be included in one SI receiving window; since the valid wireless frame is included in the first frame structure period, it can be ensured that there is a valid wireless frame that can be used for SI transmission in one SIB1-NB transmission period, thereby ensuring correct transmission of the SI.

[0162] subframes that are not used to carry MIB-NB, SIB1-NB, a Narrowband Primary Synchronization Signal (NPSS), or a Narrowband Secondary Synchronization Signal (NSSS);

[0163] subframes that are not configured as uplink.

[0164] In some embodiments, each of the subframes within an effective radio frame can be configured as an uplink subframe, a downlink subframe, or a flexible subframe that can be used as either an uplink subframe or a downlink subframe; in this case, the effective subframe can be a downlink subframe or a flexible subframe. In other embodiments, each of the subframes within an effective radio frame can be configured as an uplink subframe or a downlink subframe; in this case, the effective subframe can be a downlink subframe.

[0165] For example, if the number of effective subframes within an effective radio frame is insufficient when bits of SI are mapped to the effective radio frame, the remaining bits are mapped to the effective subframes within the next effective radio frame.

[0166] Accordingly, based on the special frame structure mode proposed in the embodiments of the present application, the embodiments of the present application further propose a system information transmission method for implementing reception of other system information in addition to MIB and SIB1-NB by a terminal device in a NB-IoT system. FIG. 7 is a schematic flowchart of a system information transmission method 700 according to an embodiment of the present application, which includes the following steps:

[0167] S710, receiving SI by the terminal device within an SI receiving window, the length of the SI receiving window containing at least n first frame structure periods, n being a positive integer.

[0168] In the first frame structure period, one or more effective radio frames and one or more ineffective radio frames are included, the ratio of the number of effective radio frames to the number of ineffective radio frames being 1:N, N being a positive integer; the effective radio frames include radio frames that can be used for NB-IoT, and the ineffective radio frames include radio frames that cannot be used for NB-IoT.

[0169] In the above manner, one or more first frame structure periods can be included within an SI receiving window; since the first frame structure period includes effective radio frames, it is ensured that the terminal device can receive the effective radio frames used for SI transmission within an SI receiving window, thereby ensuring correct reception of SI.

[0170] In some embodiments, n is equal to 2 raised to the power of x, x being a positive integer.

[0171] In some embodiments, one or more valid radio frames in the SI reception window carry the SI.

[0172] In some embodiments, the SI is mapped from a first valid subframe in a first valid radio frame in the SI reception window;

[0173] wherein the valid subframe comprises at least one of:

[0174] a subframe not used to carry MIB-NB, SIB1-NB, NPSS or NSSS;

[0175] a subframe not configured for uplink.

[0176] In some embodiments, if the number of valid subframes in a valid radio frame is not enough for the SI, the remaining bits are mapped to valid subframes in the next valid radio frame.

[0177] In some embodiments, the SI comprises SI other than MIB-NB and SIB1-NB.

[0178] Embodiment 2 is described below with reference to the accompanying drawings.

[0179] Embodiment 2:

[0180] This embodiment describes the configuration and transmission of other system information other than MIB-NB and SIB1-NB.

[0181] For the transmission of other system information (including system information other than MIB and SIB1), the network needs to configure a system information reception window (SI window), and in the case of special frame structure, the length of the system information reception window configured by the network needs to contain at least one first frame structure period. The network needs to ensure that there is at least one valid radio frame in a SI window.

[0182] Figure 8A is a schematic diagram of transmitting other system information according to an embodiment of the present application. As shown in Figure 8A, the SI window length is 160 ms, the ratio of the number of valid radio frames to the number of invalid radio frames in the first frame structure period is 1:7 (i.e., N=7). There are two valid radio frames in the SI window, and the system information is mapped from the first valid subframe in the first valid radio frame, and is continuously mapped for 2 valid subframes or 8 valid subframes. The valid subframe herein refers to a subframe that does not carry MIB-NB, SIB1-NB, NPSS and / or NSSS, and in some cases, a subframe that is not configured for uplink. When mapping the bits of the system information, if the number of valid subframes in the current valid radio frame is not enough, the remaining system information is mapped to the valid subframes in the next valid radio frame.

[0183] In some cases, the system information needs to be repeatedly transmitted in the SI window, and thus the position and length of the SI window need to be configured to ensure that there are enough valid radio frames in the SI window to carry the repeated transmission. It is assumed that the length of the SI window is n times the length of the first frame structure period, where n is an integer or a power of 2. Figure 8B is a schematic diagram of transmitting other system information according to another embodiment of the present application. As shown in Figure 8B, the length of the SI window is 320 ms, the length of the first frame structure period is 80 ms, and the length of the SI window is 4 times the length of the first frame structure period. In the SI window, the first transmission can be defined to start from the first valid radio frame, and the repeated transmission can be defined to start from which valid radio frame.

[0184] The above describes a system information transmission method based on the special frame structure mode proposed in the embodiments of the present application. The special frame structure mode will affect not only the transmission of system information, but also other transmissions, such as the uplink transmission of the UE. In the NB-IoT system, due to the low cost of the UE side, the crystal oscillator of the UE will drift due to heating during long uplink transmission. Therefore, the uplink transmission needs to be interrupted, and the interruption time is used for the UE to re-synchronize with the downlink. In the NB-IoT system, the uplink transmission time information needs to be redesigned in the case of introducing the special frame structure proposed in the embodiments of the present application. The uplink transmission time information herein can include the transmission time length of the uplink transmission and / or the time gap length.

[0185] The embodiments of the present application also propose a transmission method, which can solve the problem of uplink transmission in the case of the special frame structure. Figure 9 is a schematic flowchart of a transmission method 900 according to an embodiment of the present application, which includes the following steps:

[0186] S910, determining the uplink transmission time information in the NB-IoT system by the terminal device.

[0187] S920, the terminal device performs uplink transmission based on the uplink transmission time information.

[0188] The uplink transmission time information includes a transmission time length and / or a time gap length.

[0189] In some embodiments, the terminal device determines the transmission time length as a first time length. The first time length can be a fixed time length, for example, 256 ms; in this case, no matter how long the terminal device actually performs uplink transmission, the terminal device discontinues uplink transmission at the end of the first time length.

[0190] In some embodiments, the terminal device determines the transmission time length based on valid radio frames; wherein the valid radio frames include radio frames that can be used for NB-IoT. For example, the terminal device determines that the transmission time length contains a plurality of valid radio frames, and the sum of the lengths of the uplink subframes for uplink transmission in the plurality of valid radio frames is equal to or greater than a first time length. The first time length can be a fixed time length, for example, 256 ms; in this case, when the terminal device actually performs uplink transmission accumulates to a fixed value (such as the first time length), the terminal device discontinues uplink transmission.

[0191] In some embodiments, the terminal device determines the start of the first uplink subframe carrying uplink transmission as the start of the first time length; or the terminal device determines the start of the first valid radio frame carrying uplink transmission as the start of the first time length.

[0192] In some embodiments, the terminal device determines the time gap length in the following manner: the terminal device determines the time gap length based on valid radio frames; the valid radio frames include radio frames that can be used for NB-IoT.

[0193] For example, the terminal device determines that the time gap length contains at least one valid radio frame.

[0194] In an example, the at least one valid radio frame contains at least one of the following:

[0195] a downlink subframe carrying NPSS;

[0196] a downlink subframe carrying NSSS;

[0197] a downlink subframe carrying Narrowband-Reference Signal (NB-RS).

[0198] In an example, the terminal device determines that the time gap length contains at least 4 valid radio frames.

[0199] In an example, the at least four valid radio frames include at least one of the following:

[0200] a downlink subframe carrying NPSS;

[0201] a downlink subframe carrying NSSS;

[0202] a downlink subframe carrying NB-RS.

[0203] In some embodiments, the terminal device determines the end point of the transmission time length as the start point of the time gap length; or the terminal device determines the first valid radio frame after the end point of the transmission time length as the start point of the time gap length, the first valid radio frame including at least one of the following:

[0204] a downlink subframe carrying NPSS;

[0205] a downlink subframe carrying NSSS;

[0206] a downlink subframe carrying NB-RS.

[0207] Embodiment 3 is described below with reference to the accompanying drawings.

[0208] Embodiment 3

[0209] This embodiment describes a method for determining the transmission time length and the time gap length of uplink transmission. For convenience, in this embodiment, the transmission time length of uplink transmission is denoted as Y, and the time gap length of uplink transmission is denoted as Z.

[0210] FIG. 10A is a schematic diagram of a first determination method of the transmission time length in Embodiment 3 of the present application. As shown in FIG. 10A, the first determination method of the transmission time length (Y) is that the time length of Y is a fixed value, such as 256 ms, regardless of whether the UE continuously transmits uplink information within the time of Y. The UE stops transmission after 256 ms from the start of transmission; even if the UE can only transmit within the valid radio frame within 256 ms, so there is actually no continuous transmission for 256 ms.

[0211] The second method of determining Y is that the time length of Y is the value accumulated by the actual transmission of the UE, which can be 256 ms or other values. In this case, the invalid radio frame or the downlink subframe will not be counted in Y.

[0212] FIG. 10B is a schematic diagram of a determination method of the time gap length in Embodiment 3 of the present application. As shown in FIG. 10B, one determination method of the time gap length (Z) is that the length of Z needs to include at least four valid radio frames, and at least one downlink subframe in the four valid radio frames carries NPSS and / or one downlink subframe carries NSSS and / or one downlink subframe carries NB-RS. The start of the time gap can start immediately after Y ends or can start from the first valid radio frame after Y ends, and the valid radio frame satisfies at least one of the following conditions: at least one downlink subframe in the valid radio frame carries NPSS and / or one downlink subframe carries NSSS and / or one downlink subframe carries NB-RS. After the end of the time gap, the UE can continue uplink transmission at the uplink subframe position in the next valid radio frame.

[0213] In summary, when NB-IoT is applied to the NTN scenario, the satellite operator can have some restrictions on the use of the spectrum, for example, in some cases, the spectrum of the NTN can only be used for NB-IoT services in part of the time, and cannot be used continuously and uninterruptedly. For such a case, Embodiments of the present application consider a special frame structure, that is, only part of the radio frames are available in time, and the remaining radio frames are unavailable. In Embodiments of the present application, the radio frames available for NB-IoT are referred to as valid radio frames, and the radio frames unavailable for NB-IoT are referred to as invalid radio frames. Under such a special frame structure, there is a significant impact on the transmission of the NB-IoT system, especially for the transmission of system information, because the special frame structure causes the radio frames available for sending system information to be discontinuous in time, resulting in the system information of the existing system being unable to be sent. In Embodiments of the present application, new designs are introduced to solve the problem of system information transmission under the special frame structure, and to solve the problem of uplink transmission under the special frame structure. Furthermore, Embodiments of the present application also design an uplink transmission scheme under the special frame structure.

[0214] Embodiments of the present application also propose a terminal device, and FIG. 11 is a schematic block diagram of a terminal device 1100 according to an embodiment of the present application. The terminal device 1100 can include:

[0215] a first transceiver module 1110, configured to receive SIB1-NB, a transmission period of the SIB1-NB being equal to m times of a first frame structure period, m being a positive integer;

[0216] wherein the first frame structure period includes one or more valid radio frames and one or more invalid radio frames, a ratio of the number of valid radio frames to the number of invalid radio frames being 1:N, N being a positive integer; the valid radio frame includes a radio frame available for narrowband Internet of Things (NB-IoT), and the invalid radio frame includes a radio frame unavailable for NB-IoT.

[0217] In some embodiments, m is equal to 2 raised to the power of x, x being a positive integer.

[0218] In some embodiments, the SIB1-NB is transmitted in one or more valid radio frames in a first frame structure period in a transmission period.

[0219] In some embodiments, where a plurality of valid radio frames are included in the first frame structure period, the SIB1-NB is transmitted in the plurality of valid radio frames or in a portion of the plurality of valid radio frames.

[0220] In some embodiments, the plurality of valid radio frames are consecutive or non-consecutive.

[0221] In some embodiments, the portion of the plurality of valid radio frames are consecutive or non-consecutive.

[0222] In some embodiments, the SIB1-NB is transmitted in one or more subframes in a valid radio frame.

[0223] In some embodiments, the plurality of subframes are consecutive or non-consecutive.

[0224] In some embodiments, N = 3.

[0225] In some embodiments, where the first frame structure period is 40 milliseconds and a time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

[0226] In some embodiments, where the first frame structure period is 80 milliseconds and a time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in one valid radio frame in the first frame structure period are used to carry the SIB1-NB.

[0227] In some embodiments, N = 7.

[0228] In some embodiments, where the first frame structure period is 80 milliseconds and a time for completing one SIB1-NB transmission is 160 milliseconds, four subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

[0229] In some embodiments, where the first frame structure period is 80 milliseconds and a time for completing one SIB1-NB transmission is 640 milliseconds, one subframe in a valid radio frame in the first frame structure period is used to carry the SIB1-NB.

[0230] In some embodiments, in the case that the first frame structure period contains 8 continuous valid radio frames, the 8 continuous valid radio frames carry the SIB1-NB, and 1 subframe in each valid radio frame is used to carry the SIB1-NB.

[0231] In some embodiments, the first transceiving module 1110 is further configured to receive an MIB, the MIB indicating at least one of:

[0232] a first frame structure period;

[0233] N;

[0234] a valid radio frame in the first frame structure period used to carry the SIB1-NB;

[0235] a subframe in the valid radio frame used to carry the SIB1-NB.

[0236] The terminal device 1100 of the embodiments of the present application can realize the corresponding functions of the terminal device in the foregoing method embodiments. The corresponding processes, functions, implementation manners, and beneficial effects of the various modules (sub-modules, units, or components, etc.) in the terminal device 1100 can be referred to the corresponding descriptions in the foregoing method embodiments, which will not be described here. It should be noted that the functions described with respect to the various modules (sub-modules, units, or components, etc.) in the terminal device 1100 of the embodiments of the present application can be realized by different modules (sub-modules, units, or components, etc.), or can be realized by the same module (sub-module, unit, or component, etc.).

[0237] The embodiments of the present application also propose a terminal device. FIG. 12 is a schematic block diagram of a terminal device 1200 according to an embodiment of the present application. The terminal device 1200 can include:

[0238] a second transceiving module 1210 configured to receive SI within an SI receiving window, the SI receiving window having a length of at least n first frame structure periods, n being a positive integer;

[0239] wherein the first frame structure period includes one or more valid radio frames and one or more invalid radio frames, the ratio of the number of valid radio frames to the number of invalid radio frames being 1:N, N being a positive integer; the valid radio frame includes a radio frame that can be used for NB-IoT, and the invalid radio frame includes a radio frame that cannot be used for NB-IoT.

[0240] In some embodiments, n is equal to 2 raised to the power of x, x being a positive integer.

[0241] In some embodiments, one or more valid radio frames in the SI receiving window carry the SI.

[0242] In some embodiments, the SI is mapped from a first valid subframe in a first valid radio frame in the SI receiving window;

[0243] wherein the valid subframe comprises at least one of:

[0244] a subframe not used to carry MIB-NB, SIB1-NB, NPSS, or NSSS;

[0245] a subframe not configured for uplink.

[0246] In some embodiments, if the number of valid subframes in a valid radio frame is not enough, the remaining bits are mapped to valid subframes in the next valid radio frame.

[0247] In some embodiments, the SI comprises SI other than MIB-NB and SIB1-NB.

[0248] The terminal device 1200 of the embodiments of the present application can realize the corresponding functions of the terminal device in the foregoing method embodiments. The corresponding processes, functions, implementation manners, and beneficial effects of the various modules (sub-modules, units, or components, etc.) in the terminal device 1200 can be referred to the corresponding descriptions in the foregoing method embodiments, which will not be described here. It should be noted that the functions described with respect to the various modules (sub-modules, units, or components, etc.) in the terminal device 1200 of the embodiments of the present application can be realized by different modules (sub-modules, units, or components, etc.), or can be realized by the same module (sub-module, unit, or component, etc.).

[0249] The embodiments of the present application also propose a terminal device. FIG. 13 is a schematic block diagram of a terminal device 1300 according to an embodiment of the present application. The terminal device 1300 can include:

[0250] A first determining module 1310 configured to determine uplink transmission time information in a NB-IoT system.

[0251] A first transmission module 1320 configured to perform uplink transmission based on the uplink transmission time information.

[0252] In some embodiments, the uplink transmission time information comprises a transmission time length and / or a time gap length.

[0253] In some embodiments, the first determining module 1310 is configured to determine that the transmission time length is a first time length.

[0254] In some embodiments, the first determining module 1310 is configured to determine the transmission time length based on a valid radio frame; the valid radio frame comprises a radio frame available for NB-IoT.

[0255] In some embodiments, the transmission time length comprises a plurality of valid radio frames, and a sum of lengths of uplink subframes for uplink transmission in the plurality of valid radio frames is equal to or greater than the first time length.

[0256] In some embodiments, the first time length is equal to 256 ms.

[0257] In some embodiments, the first determining module 1310 is further configured to determine a start point of a first uplink subframe carrying uplink transmission as a start point of the first time length; or,

[0258] determine a start point of a first valid radio frame carrying uplink transmission as a start point of the first time length.

[0259] In some embodiments, the first determining module 1310 is configured to determine a time gap length based on a valid radio frame; the valid radio frame comprises a radio frame available for NB-IoT.

[0260] In some embodiments, the first determining module 1310 is configured to determine that the time gap length comprises at least one valid radio frame.

[0261] In some embodiments, the first determining module 1310 is configured to determine that the time gap length comprises at least 4 valid radio frames.

[0262] In some embodiments, the at least 4 valid radio frames comprise at least one of the following:

[0263] a downlink subframe carrying NPSS;

[0264] a downlink subframe carrying NSSS;

[0265] a downlink subframe carrying NB-RS.

[0266] In some embodiments, the first determining module 1310 is further configured to determine an end point of the transmission time length as a start point of the time gap length; or determine a first valid radio frame after the end point of the transmission time length as a start point of the time gap length, the first valid radio frame comprising at least one of a downlink subframe carrying NPSS, a downlink subframe carrying NSSS, and a downlink subframe carrying NB-RS.

[0267] The terminal device 1300 of the embodiments of the present application can realize the corresponding functions of the terminal device in the foregoing method embodiments. The processes, functions, implementation manners, and advantages of the respective modules (sub-modules, units, or components, etc.) in the terminal device 1300 can be referred to the corresponding descriptions in the foregoing method embodiments, which will not be described herein. It should be noted that the functions described with respect to the respective modules (sub-modules, units, or components, etc.) in the terminal device 1300 of the embodiments of the present application can be realized by different modules (sub-modules, units, or components, etc.), or can be realized by the same module (sub-module, unit, or component, etc.).

[0268] The embodiments of the present application also provide a network device. FIG. 14 is a schematic block diagram of a network device 1400 according to an embodiment of the present application. The network device 1400 can include:

[0269] The third transceiver module 1410 is configured to transmit the SIB1-NB, wherein the transmission period of the SIB1-NB is equal to m times of the first frame structure period, and m is a positive integer.

[0270] In some embodiments, the first frame structure period includes one or more valid radio frames and one or more invalid radio frames, and the ratio of the number of valid radio frames to the number of invalid radio frames is 1:N, where N is a positive integer. The valid radio frame includes a radio frame that can be used for NB-IoT, and the invalid radio frame includes a radio frame that cannot be used for NB-IoT.

[0271] In some embodiments, m is equal to 2 raised to the power of x, where x is a positive integer.

[0272] In some embodiments, the SIB1-NB is transmitted in one or more valid radio frames within the first frame structure period in the transmission period.

[0273] In some embodiments, when a plurality of valid radio frames are included in the first frame structure period, the SIB1-NB is transmitted in the plurality of valid radio frames or in part of the plurality of valid radio frames.

[0274] In some embodiments, the plurality of valid radio frames are continuous or non-continuous.

[0275] In some embodiments, part of the plurality of valid radio frames are continuous or non-continuous. In some embodiments, the SIB1-NB is transmitted in one or more subframes within the valid radio frame.

[0276] In some embodiments, the plurality of subframes are continuous or non-continuous.

[0277] In some embodiments, N=3.

[0278] In some embodiments, in a case that the first frame structure period is 40 milliseconds, and a time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

[0279] In some embodiments, in a case that the first frame structure period is 80 milliseconds, and a time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in one valid radio frame in the first frame structure period are used to carry the SIB1-NB.

[0280] In some embodiments, N = 7.

[0281] In some embodiments, in a case that the first frame structure period is 80 milliseconds, and a time for completing one SIB1-NB transmission is 160 milliseconds, 4 subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

[0282] In some embodiments, in a case that the first frame structure period is 80 milliseconds, and a time for completing one SIB1-NB transmission is 640 milliseconds, 1 subframe in a valid radio frame in the first frame structure period is used to carry the SIB1-NB.

[0283] In some embodiments, in a case that the first frame structure period contains 8 continuous valid radio frames, the 8 continuous valid radio frames carry the SIB1-NB, and 1 subframe in each valid radio frame is used to carry the SIB1-NB.

[0284] In some embodiments, the third transceiver module 1410 is further configured to send an MIB, the MIB indicating at least one of:

[0285] the first frame structure period;

[0286] N;

[0287] a valid radio frame in the first frame structure period for carrying the SIB1-NB;

[0288] a subframe in the valid radio frame for carrying the SIB1-NB.

[0289] The network device 1400 of the embodiments of this application can realize the corresponding functions of the network device in the foregoing method embodiments. The processes, functions, implementation manners, and beneficial effects of the respective modules (sub-modules, units, or components, etc.) in the network device 1400 can be referred to the corresponding descriptions in the foregoing method embodiments, which will not be described here again. It should be noted that the functions described with respect to the respective modules (sub-modules, units, or components, etc.) in the network device 1400 of the embodiments of this application can be realized by different modules (sub-modules, units, or components, etc.), or can be realized by the same module (sub-module, unit, or component, etc.).

[0290] The embodiments of this application also provide a network device. FIG. 15 is a schematic block diagram of a network device 1500 according to an embodiment of this application. The network device 1500 can include:

[0291] The fourth transceiving module 1510 is configured to transmit SI in an SI receiving window, the length of the SI receiving window containing at least n first frame structure periods, n being a positive integer.

[0292] The first frame structure period includes one or more valid wireless frames and one or more invalid wireless frames, the ratio of the number of valid wireless frames to the number of invalid wireless frames being 1:N, N being a positive integer; the valid wireless frame includes a wireless frame available for NB-IoT, and the invalid wireless frame includes a wireless frame unavailable for NB-IoT.

[0293] In some embodiments, n is equal to 2 raised to the power of x, x being a positive integer.

[0294] In some embodiments, one or more valid wireless frames in the SI receiving window carry the SI.

[0295] In some embodiments, the SI is mapped from a first valid subframe in a first valid wireless frame in the SI receiving window.

[0296] The valid subframe includes at least one of the following:

[0297] a subframe not used to carry MIB-NB, SIB1-NB, NPSS, or NSSS;

[0298] a subframe not configured for uplink.

[0299] In some embodiments, if the number of valid subframes in a valid wireless frame is insufficient when bits of the SI are mapped to the valid wireless frame, the remaining bits are mapped to valid subframes in the next valid wireless frame.

[0300] In some embodiments, the SI includes SI other than MIB-NB and SIB1-NB.

[0301] The network device 1500 of the embodiments of this application can realize the corresponding functions of the network device in the method embodiments described above. The processes, functions, implementation manners and advantages of the respective modules (sub-modules, units or components, etc.) in the network device 1500 can be referred to the corresponding descriptions in the method embodiments described above, and will not be described here again. It should be noted that the functions described with respect to the respective modules (sub-modules, units or components, etc.) in the network device 1500 of the embodiments of this application can be realized by different modules (sub-modules, units or components, etc.), or can be realized by the same module (sub-module, unit or component, etc.).

[0302] FIG. 16 is a schematic structural diagram of a communication device 1600 according to the embodiments of this application. The communication device 1600 includes a processor 1610, which can call and run a computer program from a memory to enable the communication device 1600 to implement the methods in the embodiments of this application.

[0303] In an implementation manner, the communication device 1600 can further include a memory 1620. The processor 1610 can call and run a computer program from the memory 1620 to enable the communication device 1600 to implement the methods in the embodiments of this application.

[0304] The memory 1620 can be a separate device independent of the processor 1610, or can be integrated in the processor 1610.

[0305] In an implementation manner, the communication device 1600 can further include a transceiver 1630, and the processor 1610 can control the transceiver 1630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0306] The transceiver 1630 can include a transmitter and a receiver. The transceiver 1630 can further include an antenna, and the number of antennas can be one or more.

[0307] In an implementation manner, the communication device 1600 can be a terminal device of the embodiments of this application, and the communication device 1600 can realize the corresponding processes realized by the terminal device in the methods of the embodiments of this application. For the sake of brevity, they will not be described here again.

[0308] In an implementation manner, the communication device 1600 can be a network device of the embodiments of this application, and the communication device 1600 can realize the corresponding processes realized by the network device in the methods of the embodiments of this application. For the sake of brevity, they will not be described here again.

[0309] FIG. 17 is a schematic structural diagram of a chip 1700 according to an embodiment of the present application. The chip 1700 includes a processor 1710, which can invoke and run a computer program from a memory to implement the method in the embodiments of the present application.

[0310] In an embodiment, the chip 1700 can further include a memory 1720. The processor 1710 can invoke and run a computer program from the memory 1720 to implement the method performed by the terminal device or the network device in the embodiments of the present application.

[0311] The memory 1720 can be a separate device independent of the processor 1710, or can be integrated in the processor 1710.

[0312] In an embodiment, the chip 1700 can further include an input interface 1730. The processor 1710 can control the input interface 1730 to communicate with other devices or chips, and specifically, can acquire information or data sent by other devices or chips.

[0313] In an embodiment, the chip 1700 can further include an output interface 1740. The processor 1710 can control the output interface 1740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

[0314] In an embodiment, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding procedures implemented by the terminal device in each method of the embodiments of the present application. For brevity, details are not described herein.

[0315] In an embodiment, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding procedures implemented by the network device in each method of the embodiments of the present application. For brevity, details are not described herein.

[0316] The chip applied to the terminal device and the network device can be the same chip or different chips.

[0317] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system-on-chip, a chip system or a system-on-chip, etc.

[0318] The aforementioned processor can be a general processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or other programmable logic device, a transistor logic device, a discrete hardware component, etc. Among them, the aforementioned general processor can be a microprocessor or any conventional processor, etc.

[0319] The aforementioned memory can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM).

[0320] It should be understood that the aforementioned memory is an exemplary but not a limiting description, for example, the memory in the embodiments of the present application can also be a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM) and a direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable type of memory.

[0321] In the above embodiments, the processes can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the processes can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed by a computer, the computer instructions generate the processes or functions in the embodiments of the present application in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. containing one or more available media sets. The available medium can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, solid state disk (SSD)), etc.

[0322] It should be understood that the size of the sequence number of each process described above in various embodiments of the present application does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0323] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0324] The above only describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for transmitting system information, comprising: receiving, by a terminal device, a narrowband system information block (SIB1-NB), wherein a transmission period of the SIB1-NB is equal to m times of a first frame structure period, and m is a positive integer; wherein the first frame structure period comprises one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames is 1:N, and N is a positive integer; the valid radio frames comprise radio frames available for narrowband internet of things (NB-IoT), and the invalid radio frames comprise radio frames unavailable for NB-IoT.

2. The method of claim 1, wherein, m is equal to 2 raised to the power of x, and x is a positive integer.

3. The method of claim 1 or 2, wherein, the SIB1-NB is transmitted in one or more valid radio frames in a first frame structure period within the transmission period.

4. The method of claim 1 or 2, wherein, in a case where the first frame structure period comprises a plurality of valid radio frames, the SIB1-NB is transmitted in the plurality of valid radio frames or in part of the plurality of valid radio frames.

5. The method of claim 4, wherein, the plurality of valid radio frames are consecutive or non-consecutive.

6. The method of claim 4, wherein, part of the plurality of valid radio frames are consecutive or non-consecutive.

7. The method of any one of claims 3-6, wherein, the SIB1-NB is transmitted in one or more subframes in the valid radio frame.

8. The method of claim 7, wherein, the plurality of subframes are consecutive or non-consecutive.

9. The method of any one of claims 1-8, wherein, N=3.

10. The method of claim 9, wherein, in a case where the first frame structure period is 40 milliseconds and a time for completing one transmission of the SIB1-NB is 160 milliseconds, two subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

11. The method of claim 9, wherein, in a case where the first frame structure period is 80 milliseconds and a time for completing one transmission of the SIB1-NB is 160 milliseconds, two subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

12. The method of any one of claims 1-8, wherein, N=7.

13. The method of claim 12, wherein, in a case where the first frame structure period is 80 milliseconds and a time for completing one transmission of the SIB1-NB is 160 milliseconds, four subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

14. The method of claim 12, wherein, in a case where the first frame structure period is 80 milliseconds and a time for completing one transmission of the SIB1-NB is 640 milliseconds, one subframe in a valid radio frame in the first frame structure period is used to carry the SIB1-NB.

15. The method of any one of claims 1-8, wherein, in a case where the first frame structure period comprises eight consecutive valid radio frames, the eight consecutive valid radio frames carry the SIB1-NB, and one subframe in each of the valid radio frames is used to carry the SIB1-NB. 16.The method of any one of claims 1-15, further comprising receiving, by the terminal device, a master information block (MIB-NB), wherein the MIB-NB indicates at least one of the following: the first frame structure period; N; a valid radio frame in the first frame structure period used to carry the SIB1-NB; or a subframe in the valid radio frame used to carry the SIB1-NB. 17.A method for transmitting system information, comprising: The terminal device receives system information (SI) within an SI receiving window, a length of the SI receiving window containing at least n first frame structure periods, n being a positive integer; The first frame structure period includes one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame includes a radio frame available for NB-IoT, and the invalid radio frame includes a radio frame unavailable for NB-IoT.

18. The method of claim 17, wherein, The n is equal to 2 raised to the power of x, x being a positive integer.

19. The method of claim 17 or 18, wherein, One or more of the valid radio frames in the SI receiving window carries the SI.

20. The method of claim 19, wherein, The SI is mapped from a first valid subframe in a first valid radio frame in the SI receiving window; The valid subframe includes at least one of the following: A subframe not used for carrying a narrowband master information block (MIB-NB), a SIB1-NB, a narrowband primary synchronization signal (NPSS), or a narrowband secondary synchronization signal (NSSS); A subframe not configured for uplink.

21. The method of claim 20, wherein, When bits of the SI are mapped to valid radio frames, if a number of valid subframes in a valid radio frame is not enough, remaining bits are mapped to valid subframes in a next valid radio frame.

22. The method of any one of claims 17-21, wherein, The SI includes SI other than MIB-NB and SIB1-NB.

23. A system information transmission method, comprising: A terminal device determines uplink transmission time information in a NB-IoT system; The terminal device performs uplink transmission based on the uplink transmission time information.

24. The method of claim 23, wherein, The uplink transmission time information includes a transmission time length and / or a time gap length.

25. The method of claim 24, wherein, The terminal device determines the transmission time length, comprising: The terminal device determines the transmission time length as a first time length.

26. The method of claim 24, wherein, The terminal device determines the transmission time length, comprising: The terminal device determines the transmission time length based on a valid radio frame; the valid radio frame includes a radio frame available for NB-IoT.

27. The method of claim 26, wherein, The transmission time length contains a plurality of valid radio frames, and a sum of lengths of uplink subframes for uplink transmission in the plurality of valid radio frames is equal to or greater than a first time length.

28. The method of claim 25 or 27, wherein, The first time length is equal to 256 milliseconds.

29. The method of any one of claims 25, 27 or 28, further comprising, The terminal device determines a start of a first uplink subframe carrying uplink transmission as a start of the first time length; or The terminal device determines a start of a first valid radio frame carrying uplink transmission as a start of the first time length.

30. The method of claim 24, wherein, The terminal device determines the time gap length, comprising: The terminal device determines the time gap length based on a valid radio frame; the valid radio frame includes a radio frame available for NB-IoT.

31. The method of claim 30, wherein, The terminal device determines the time gap length based on a valid radio frame, comprising: The terminal device determines that the time gap length contains at least one valid radio frame.

32. The method of claim 31, wherein, The terminal device determines that the time gap length contains at least 4 valid radio frames.

33. The method of claim 32, wherein, The at least four valid radio frames include at least one of the following: a downlink subframe carrying NPSS; a downlink subframe carrying NSSS; a downlink subframe carrying NB-RS.

34. The method of any of claims 30-33, further comprising, the terminal device determines the end point of the transmission time length as the start point of the time gap length; or the terminal device determines the first valid radio frame after the end point of the transmission time length as the start point of the time gap length the first valid radio frame includes at least one of a downlink subframe carrying NPSS, a downlink subframe carrying NSSS, and a downlink subframe carrying NB-RS.

35. A system information transmission method, comprising: a network device transmitting SIB1-NB, a transmission period of the SIB1-NB being equal to m times of a first frame structure period, m being a positive integer; wherein the first frame structure period includes one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame including a radio frame available for NB-IoT, the invalid radio frame including a radio frame unavailable for NB-IoT.

36. The method of claim 35, wherein, m is equal to 2 raised to the power of x, x being a positive integer.

37. The method of claim 35 or 36, wherein, the SIB1-NB is transmitted in one or more valid radio frames in a first frame structure period within the transmission period.

38. The method of claim 35 or 36, wherein, in a case where the first frame structure period includes a plurality of valid radio frames, the SIB1-NB is transmitted in the plurality of valid radio frames or in part of the plurality of valid radio frames.

39. The method of claim 38, wherein, the plurality of valid radio frames are continuous or discontinuous.

40. The method of claim 38, wherein, part of the plurality of valid radio frames are continuous or discontinuous.

41. The method of any one of claims 37-40, wherein, the SIB1-NB is transmitted in one or more subframes in the valid radio frame.

42. The method of claim 41, wherein, the plurality of subframes are continuous or discontinuous.

43. The method of any one of claims 35-42, wherein, N=3.

44. The method of claim 43, wherein, in a case where the first frame structure period is 40 milliseconds and a time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

45. The method of claim 43, wherein, in a case where the first frame structure period is 80 milliseconds and a time for completing one SIB1-NB transmission is 160 milliseconds, two subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

46. The method of any one of claims 35-42, wherein, N=7.

47. The method of claim 46, wherein, in a case where the first frame structure period is 80 milliseconds and a time for completing one SIB1-NB transmission is 160 milliseconds, four subframes in a valid radio frame in the first frame structure period are used to carry the SIB1-NB.

48. The method of claim 46, wherein, in a case where the first frame structure period is 80 milliseconds and a time for completing one SIB1-NB transmission is 640 milliseconds, one subframe in a valid radio frame in the first frame structure period is used to carry the SIB1-NB.

49. The method of any one of claims 35-42, wherein, In a case that the first frame structure period contains 8 continuous valid radio frames, the 8 continuous valid radio frames carry the SIB1-NB, and 1 subframe in each of the valid radio frames is used to carry the SIB1-NB.

50. The method of any of claims 35-49, further comprising the network device sending a MIB-NB, the MIB-NB indicating at least one of: the first frame structure period; the N; a valid radio frame in the first frame structure period used to carry SIB1-NB; or a subframe in the valid radio frame used to carry SIB1-NB.

51. A system information transmission method, comprising: a network device sending SI within an SI receiving window, the SI receiving window having a length containing at least n first frame structure periods, the n being a positive integer; wherein the first frame structure period includes one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame including a radio frame available for NB-IoT, the invalid radio frame including a radio frame unavailable for NB-IoT.

52. The method of claim 51, wherein, the n being equal to 2 raised to the power of x, the x being a positive integer.

53. The method of claim 51 or 52, wherein, one or more of the valid radio frames in the SI receiving window carrying the SI.

54. The method of claim 53, wherein, the SI being mapped from a first valid subframe in a first valid radio frame in the SI receiving window; wherein the valid subframe includes at least one of: a subframe not used to carry MIB-NB, SIB1-NB, NPSS, or NSSS; or a subframe not configured as uplink.

55. The method of claim 54, wherein, if a number of valid subframes in a valid radio frame is not enough when bits of the SI are mapped to the valid radio frame, remaining bits are mapped to valid subframes in a next valid radio frame.

56. The method of any one of claims 51-55, wherein, the SI including SI other than MIB-NB and SIB1-NB.

57. A terminal device, comprising: a first transceiving module configured to receive SIB1-NB, a transmission period of the SIB1-NB being equal to m times of a first frame structure period, the m being a positive integer; wherein the first frame structure period includes one or more valid radio frames and one or more invalid radio frames, a ratio of a number of the valid radio frames to a number of the invalid radio frames being 1:N, N being a positive integer; the valid radio frame including a radio frame available for narrowband internet of things (NB-IoT), the invalid radio frame including a radio frame unavailable for NB-IoT.

58. A terminal device, comprising: a second transceiving module configured to receive SI within an SI receiving window, the SI receiving window having a length containing at least n first frame structure periods, the n being a positive integer; The first frame structure period includes one or more valid wireless frames and one or more invalid wireless frames, a ratio of a number of the valid wireless frames to a number of the invalid wireless frames is 1:N, N is a positive integer; the valid wireless frames include wireless frames available for NB-IoT, and the invalid wireless frames include wireless frames unavailable for NB-IoT. 59.A terminal device, comprising: a first determining module configured to determine uplink transmission time information in an NB-IoT system; a first transmitting module configured to perform uplink transmission based on the uplink transmission time information. 60.A network device, comprising: a third transceiver configured to transmit SIB1-NB, a transmission period of the SIB1-NB is equal to m times of a first frame structure period, m is a positive integer; The first frame structure period includes one or more valid wireless frames and one or more invalid wireless frames, a ratio of a number of the valid wireless frames to a number of the invalid wireless frames is 1:N, N is a positive integer; the valid wireless frames include wireless frames available for NB-IoT, and the invalid wireless frames include wireless frames unavailable for NB-IoT. 61.A network device, comprising: a fourth transceiver configured to transmit SI within an SI receiving window, a length of the SI receiving window contains at least n first frame structure periods, n is a positive integer; The first frame structure period includes one or more valid wireless frames and one or more invalid wireless frames, a ratio of a number of the valid wireless frames to a number of the invalid wireless frames is 1:N, N is a positive integer; the valid wireless frames include wireless frames available for NB-IoT, and the invalid wireless frames include wireless frames unavailable for NB-IoT.

62. A terminal device comprising: a transceiver, a processor and a memory, the memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to invoke and run the computer program stored in the memory, so that the terminal device performs the method in any one of claims 1 to 34.

63. A network device comprising: a transceiver, a processor and a memory, the memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to invoke and run the computer program stored in the memory, so that the network device performs the method in any one of claims 35 to 56.

64. A chip comprising: a processor configured to invoke and run a computer program from a memory, so that a device installed with the chip performs the method in any one of claims 1 to 56. 65.A computer readable storage medium configured to store a computer program, which causes a device to perform the method in any one of claims 1 to 56 when the computer program is run by the device. 66.A computer program product comprising computer program instructions, which causes a computer to perform the method in any one of claims 1 to 56. 67.A computer program, which causes a computer to perform the method in any one of claims 1 to 56.

Images