Signal transmission method, device, equipment and system

Abstract

Provided are a signal transmission method, apparatus, device and system, the method comprising: a terminal device receiving scheduling information from a network device, the scheduling information being used for indicating a sending mode in which the terminal device sends an uplink signal, and the terminal device sending the uplink signal based on the sending mode indicated by the scheduling information. Wherein the sending mode of the uplink signal comprises at least one of the following modes: sending an uplink narrowband signal on a narrowband frequency, sending the uplink narrowband signal on a broadband frequency, or sending an uplink broadband signal on the broadband frequency. According to the scheme, the narrowband signal of the network side scheduling terminal can be sent on the broadband frequency, the broadband signal can be sent on the broadband frequency, and the frequency resource utilization rate and the transmission performance of a communication system are improved.

Description

Technical Field

[0001] The present application relates to the field of network transmission and wireless communication, and in particular to a signal transmission method, device, equipment and system. Background Art

[0002] Multi-modal communication systems include narrowband systems and broadband systems. Narrowband systems include Police Digital Trunking (PDT), Trans European Trunked Radio (TETRA), etc., and broadband systems include Long Term Evolution (LTE), New Radio (NR), 340MHz image transmission, 1430MHz police aviation image transmission, etc. Compared with broadband systems, narrowband systems have higher transmission power and longer channel coverage distance; compared with narrowband systems, broadband systems have larger carrier bandwidths.

[0003] In a multimodal communication system, the narrowband system and the broadband system are independent of each other, which is mainly reflected in the following aspects: the narrowband system and the broadband system use different frequency bands; the narrowband system and the broadband system are respectively configured with different baseband signal processing and RF path transmission; the scheduling and signal transmission of the narrowband system and the broadband system are separated.

[0004] At present, multimodal communication systems do not support joint scheduling between narrowband systems and broadband systems, and the resource utilization and transmission performance of communication systems need to be improved. Summary of the invention

[0005] The embodiments of the present application provide a signal transmission method, apparatus, device and system, which can improve the frequency resource utilization and transmission performance of a communication system.

[0006] In a first aspect, an embodiment of the present application provides a signal transmission method, the method comprising:

[0007] The terminal device receives scheduling information from the network device, wherein the scheduling information is used to indicate a transmission mode of an uplink signal sent by the terminal device; the transmission mode of the uplink signal includes at least one of the following: sending an uplink narrowband signal on a narrowband frequency, or sending an uplink narrowband signal on a broadband frequency, or sending an uplink broadband signal on a broadband frequency;

[0008] The terminal device sends the uplink signal based on the sending mode indicated by the scheduling information.

[0009] In an optional embodiment of the first aspect, the terminal device receives the scheduling information from the network device, including:

[0010] The terminal device receives the scheduling information on a narrowband physical downlink control channel.

[0011] In an optional embodiment of the first aspect, the terminal device receives the scheduling information from the network device, including:

[0012] Under the first condition, the terminal device receives scheduling information from the network device for instructing the terminal device to send the uplink narrowband signal on the broadband frequency;

[0013] The first condition includes at least one of the following:

[0014] Broadband frequency resources are idle; or

[0015] Broadband frequency resources are allowed to be preempted; or

[0016] There is interference in sending the uplink narrowband signal at the narrowband frequency; or

[0017] Narrowband frequency resources are limited.

[0018] In an optional embodiment of the first aspect, the scheduling information includes an index for indicating a transmission mode in which the terminal device sends the uplink signal;

[0019] The method further comprises:

[0020] The terminal device obtains the sending parameter set corresponding to the index in the scheduling information by querying the correspondence between the pre-configured sending parameter set and the index;

[0021] The terminal device sends the uplink signal based on the scheduling information, including:

[0022] The terminal device sends the uplink signal based on the sending parameter set corresponding to the index in the scheduling information.

[0023] In an optional embodiment of the first aspect, if the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a broadband frequency; the terminal device sends the uplink signal based on the sending mode indicated by the scheduling information, including:

[0024] The application processor of the terminal device configures the first signal transmission path by controlling the path selection module, and transmits the uplink narrowband signal at the broadband frequency via the first signal transmission path; the first signal transmission path includes a narrowband baseband processing module and a broadband radio frequency processing module.

[0025] In an optional embodiment of the first aspect, if the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a narrowband frequency; the terminal device sends the uplink signal based on the sending mode indicated by the scheduling information, including:

[0026] The application processor of the terminal device configures a second signal transmission path by controlling a path selection module, and transmits the uplink narrowband signal at the narrowband frequency via the second signal transmission path; the second signal transmission path includes a narrowband baseband processing module and a narrowband radio frequency processing module.

[0027] In an optional embodiment of the first aspect, the terminal device receives the scheduling information from the network device, including:

[0028] Under the second condition, the terminal device receives scheduling information from the network device for instructing the terminal device to send the uplink broadband signal on the broadband frequency;

[0029] The second condition includes at least one of the following:

[0030] Narrowband coverage is normal but broadband coverage is weak; or

[0031] Uplink single sideband frequency resources are available.

[0032] In an optional embodiment of the first aspect, if the scheduling information is used to instruct the terminal device to send the uplink broadband signal on a broadband frequency; the terminal device sends the uplink signal based on the sending mode indicated by the scheduling information, including:

[0033] The application processor of the terminal device configures a third signal transmission path by controlling the path selection module, and transmits the uplink broadband signal at the broadband frequency via the third signal transmission path;

[0034] The third signal transmission path includes a broadband baseband processing module and a broadband radio frequency processing module.

[0035] In a second aspect, an embodiment of the present application provides a signal transmission method, including:

[0036] The network device sends scheduling information to the terminal device, where the scheduling information is used to indicate a sending mode for the terminal device to send an uplink signal;

[0037] The transmission mode of the uplink signal includes at least one of the following: transmitting the uplink narrowband signal at a narrowband frequency, or transmitting the uplink narrowband signal at a broadband frequency, or transmitting the uplink broadband signal at a broadband frequency;

[0038] The network device receives the uplink signal from the terminal device based on the transmission mode of the uplink signal indicated by the scheduling information.

[0039] In an optional embodiment of the second aspect, the network device sending the scheduling information to the terminal device includes:

[0040] Under the first condition, the network device sends scheduling information to the terminal device for instructing the terminal device to send the uplink narrowband signal on the broadband frequency;

[0041] The first condition includes at least one of the following:

[0042] Broadband frequency resources are idle; or

[0043] Broadband frequency resources are allowed to be preempted; or

[0044] There is interference in sending the uplink narrowband signal at the narrowband frequency; or

[0045] Narrowband frequency resources are limited.

[0046] In an optional embodiment of the second aspect, if the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a broadband frequency, the network device receives the uplink signal from the terminal device based on the transmission mode of the uplink signal indicated by the scheduling information, including:

[0047] The network device receives an uplink signal at the broadband frequency, the uplink signal comprising the uplink narrowband signal;

[0048] The method further comprises:

[0049] The network device separates the uplink narrowband signal from the uplink signal;

[0050] The network device transmits the uplink narrowband signal to a narrowband baseband processing module of the network device for processing.

[0051] In an optional embodiment of the second aspect, the network device sending the scheduling information to the terminal device includes:

[0052] Under the second condition, the network device sends scheduling information to the terminal device for instructing the terminal device to send the uplink broadband signal on the broadband frequency;

[0053] The second condition includes at least one of the following:

[0054] Narrowband coverage is normal but broadband coverage is weak; or

[0055] Uplink single sideband frequency resources are available.

[0056] In an optional embodiment of the second aspect, if the scheduling information is used to instruct the terminal device to send the uplink broadband signal on a broadband frequency, the network device receives the uplink signal from the terminal device based on the transmission mode of the uplink signal indicated by the scheduling information, including:

[0057] The network device receives an uplink signal at the broadband frequency, wherein the uplink signal includes the uplink broadband signal;

[0058] The method further comprises:

[0059] The network device separates the uplink broadband signal from the uplink signal;

[0060] The network device transmits the uplink broadband signal to the broadband baseband processing module of the network device for processing.

[0061] In a third aspect, an embodiment of the present application provides a signal transmission device, the device comprising:

[0062] A receiving module, configured to receive scheduling information from a network device, wherein the scheduling information is used to indicate a sending mode of an uplink signal sent by a sending module; the sending mode of the uplink signal includes at least one of the following: sending an uplink narrowband signal at a narrowband frequency, or sending the uplink narrowband signal at a broadband frequency, or sending an uplink broadband signal at a broadband frequency;

[0063] The sending module is used to send the uplink signal based on the sending mode indicated by the scheduling information.

[0064] In a fourth aspect, an embodiment of the present application provides a signal transmission device, the device comprising:

[0065] A sending module, used to send scheduling information to a terminal device, wherein the scheduling information is used to indicate a sending mode for the terminal device to send an uplink signal;

[0066] The transmission mode of the uplink signal includes at least one of the following: transmitting the uplink narrowband signal at a narrowband frequency, or transmitting the uplink narrowband signal at a broadband frequency, or transmitting the uplink broadband signal at a broadband frequency;

[0067] A receiving module is used to receive the uplink signal from the terminal device based on the sending mode of the uplink signal indicated by the scheduling information.

[0068] In a fifth aspect, an embodiment of the present application provides a terminal device, comprising: a processor and a memory; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, so that the terminal device performs a method as described in any one of the first aspects.

[0069] In a sixth aspect, an embodiment of the present application provides a network device, comprising: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the network device performs a method as described in any one of the second aspects.

[0070] In a seventh aspect, an embodiment of the present application provides a communication system, including: at least one terminal device and a network device, wherein the at least one terminal device is communicatively connected to the network device;

[0071] The at least one terminal device executes the method as described in any one of the first aspects, and the network device executes the method as described in any one of the second aspects.

[0072] In an eighth aspect, the present application provides a computer-readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the method as described in any one of the first aspect or the method as described in any one of the second aspect is implemented.

[0073] In a ninth aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the method as described in any one of the first aspect or the method as described in any one of the second aspect.

[0074] The embodiments of the present application provide a signal transmission method, apparatus, device and system, the method comprising: a terminal device receives scheduling information from a network device, the scheduling information is used to indicate a transmission mode of an uplink signal sent by the terminal device, and the terminal device sends an uplink signal based on the transmission mode indicated by the scheduling information. The transmission mode of the uplink signal includes at least one of the following: sending an uplink narrowband signal on a narrowband frequency, or sending an uplink narrowband signal on a broadband frequency, or sending an uplink broadband signal on a broadband frequency. The above scheme can realize the transmission of a narrowband signal of a terminal on a broadband frequency and the transmission of a broadband signal on a broadband frequency by the network side scheduling, thereby improving the frequency resource utilization and transmission performance of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0076] Figure 1 A schematic diagram of the structure of the terminal device provided in the embodiment of the present application Figure 1 ;

[0077] Figure 2 Schematic diagram of the structure of the multi-mode chip that integrates broadband and narrowband provided in the embodiment of the present application Figure 1 ;

[0078] Figure 3 Schematic diagram of the structure of the multi-mode chip that integrates broadband and narrowband provided in the embodiment of the present application Figure 2 ;

[0079] Figure 4 Schematic diagram of the structure of the multi-mode chip that integrates broadband and narrowband provided in the embodiment of the present application Figure 3 ;

[0080] Figure 5 A schematic diagram of a signal transmission path provided in an embodiment of the present application;

[0081] Figure 6 Schematic diagram of the signal transmission method provided in the embodiment of the present application Figure 1 ;

[0082] Figure 7 Schematic diagram of the signal transmission method provided in the embodiment of the present application Figure 2 ;

[0083] Figure 8 Schematic diagram of the signal transmission method provided in the embodiment of the present application Figure 3 ;

[0084] Fig. 9 A schematic diagram of spectrum resource allocation provided in an embodiment of the present application;

[0085] Fig.10 A schematic diagram of the structure of the signal transmission device provided in the embodiment of the present application Figure 1 ;

[0086] Fig.11 A schematic diagram of the structure of the signal transmission device provided in the embodiment of the present application Figure 2 ;

[0087] Fig.12 A schematic diagram of the structure of the terminal device provided in the embodiment of the present application Figure 2 ;

[0088] Fig.13 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0089] Fig.14 A schematic diagram of the structure of the terminal device provided in the embodiment of the present application Figure 3 . DETAILED DESCRIPTION

[0090] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0091] The terms "first", "second", "third", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0092] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0093] Definitions of terms used in the embodiments of this application:

[0094] Baseband chip refers to the chip used to synthesize the baseband signal to be transmitted or decode the received baseband signal. Specifically, when transmitting, it encodes the voice or other data signal into the baseband code used for transmission; when receiving, it decodes the received baseband code into voice or other data signals. It mainly completes the information processing function of the communication terminal.

[0095] Radio frequency chips, also known as radio frequency integrated circuits (RFICs), are specialized semiconductor devices designed specifically to efficiently process radio frequency signals.

[0096] The radio frequency front-end is a core component in wireless communication devices, and its main function is to convert wireless electromagnetic wave signals and binary digital signals into each other. It mainly consists of a power amplifier (PA), a low-noise amplifier (LNA), a filter, a switch, a duplexer (Duplexer and Diplexer), and an antenna tuner, etc. The characteristics and performance of these components directly affect the signal transmission and reception of electronic devices.

[0097] The application processor, whose full name is Multimedia Application Processor (MAP for short), is a very large-scale integrated circuit that expands audio and video functions and dedicated interfaces based on a low-power central processing unit (CPU). It is mainly responsible for processing information such as audio, video, and images.

[0098] A narrowband signal refers to a signal with a relatively narrow frequency band. The frequency bandwidth of a narrowband signal is relatively small compared to the center frequency, that is, WB / f0 < 1 / 10, where WB is the signal bandwidth and f0 is the center frequency. For example, if the center frequency is 1 GHz and the bandwidth is 10 MHz, then this signal can be regarded as a narrowband signal.

[0099] A broadband signal refers to a signal with a relatively wide frequency band. The frequency bandwidth of a broadband signal is relatively large compared to the center frequency, that is, B << f0, or B / f0 << 1. Generally speaking, the relative bandwidth of a narrowband signal B / f0 < 0.1, while the relative bandwidth of a broadband signal is relatively large and can even reach several orders of magnitude. Broadband signals have higher data transmission rates and wider frequency bandwidths and can process multiple different signal types simultaneously. In broadband signals, various different communication protocols and modulation and demodulation technologies are widely used to achieve high-speed and efficient data transmission.

[0100] Single Side Band (SSB) communication is a communication method. In order to improve communication efficiency and save communication frequency bands, the carrier and the other sideband can be removed during communication, and only one sideband is transmitted. The advantages of single sideband communication are: saving frequency bands, saving power, and improving confidentiality because the single sideband transmitter does not transmit the carrier frequency.

[0101] In a multi-modal communication system, narrowband systems and broadband systems use different frequency bands. The frequency resources defined by narrowband systems are relatively low, such as the frequencies defined by PDT / TETRA are generally in frequency bands below 1 GHz such as 350 MHz, 370 MHz, 800 MHz, etc. The frequency resources defined by broadband systems are around 1 GHz, C-Band, and sub 6G, etc. The power spectral density of narrowband systems is generally higher than that of broadband systems, and the coverage range, especially the uplink coverage, is generally larger than that of broadband systems.

[0102] Currently, in multi-modal communications, terminal devices are usually configured with different baseband signal processing and radio frequency paths to send or receive narrowband signals or broadband signals. Figure 1 A schematic diagram of the structure of the terminal device provided in the embodiment of the present application Figure 1 .like Figure 1 As shown, the terminal device includes an antenna, a radio frequency front end, a radio frequency chip, a baseband chip and an application processor. Among them, the radio frequency chip includes a narrowband radio frequency processing module and a broadband radio frequency processing module, and the baseband chip includes a narrowband baseband processing module and a broadband baseband processing module. The connection relationship between the modules or devices of the terminal device is as follows: the application processor is connected to the baseband chip, and specifically, the application processor is respectively connected to the narrowband baseband processing module and the broadband baseband processing module in the baseband chip. The narrowband baseband processing module of the baseband chip is connected to the narrowband radio frequency processing module of the radio frequency chip, and the broadband baseband processing module of the baseband chip is connected to the broadband radio frequency processing module of the radio frequency chip. The radio frequency chip is connected to the radio frequency front end, and specifically, the radio frequency front end is respectively connected to the narrowband radio frequency processing module and the broadband radio frequency processing module in the radio frequency chip. The radio frequency front end is connected to the antenna.

[0103] In some embodiments, the application processor can transmit audio, video or image information to the baseband chip, and the baseband chip loads this information on the baseband signal. After being processed by the baseband chip, the RF chip, and the RF front end, the antenna completes the transmission of the uplink signal. Conversely, the antenna receives the downlink signal, and the downlink signal carries the downlink information. After being processed by the RF front end, the RF chip, and the baseband chip, the downlink information is transmitted to the application processor.

[0104] based on Figure 1 In the terminal device shown, the transmission path of the narrowband signal includes the narrowband baseband processing module of the baseband chip and the narrowband RF processing module of the RF chip, and the transmission path of the broadband signal includes the broadband baseband processing module of the baseband chip and the broadband RF processing module of the RF chip. Among them, the transmission path of the narrowband signal is independent of the transmission path of the broadband signal, and the uplink transmission of the narrowband signal cannot share the RF path of the broadband signal, that is, it cannot share the broadband RF processing module.

[0105] At present, when narrowband resources are limited or broadband signal interference is large, even if broadband frequency resources are idle or uplink single-sideband frequency resources are available, the system does not support narrowband scheduling of wide-narrow wireless resources, that is, the network side does not support scheduling of narrowband signals on the uplink transmission of broadband frequencies through narrowband physical downlink control channels, or scheduling of broadband signals on the uplink transmission of broadband frequencies through narrowband physical downlink control channels.

[0106] In view of this, the embodiment of the present application shows a multi-mode chip that integrates broadband and narrowband. The multi-mode chip includes a baseband chip and a radio frequency chip. A path selection module is set between the baseband chip and the radio frequency chip to decouple the baseband processing and the radio frequency processing. The multi-mode chip can be applied to the terminal side, and supports the terminal side to configure the narrowband baseband processing module in the baseband chip to connect with the broadband radio frequency processing module in the radio frequency chip through the path selection module, so as to realize the transmission of the uplink narrowband signal on the terminal side on the broadband frequency. In this way, when the narrowband resources are limited and the broadband frequency resources are idle, the terminal device can send the uplink narrowband signal on the broadband resources based on network scheduling, thereby improving the transmission performance and resource utilization of the communication system.

[0107] Based on the terminal device including the above-mentioned multi-mode chip, the embodiment of the present application shows a signal transmission method. On the one hand, a narrowband scheduling mechanism is introduced, that is, a mechanism for narrowband channels to schedule wide and narrow wireless resources. The network side can schedule the terminal device to send uplink narrowband signals in narrowband frequency resources, or schedule the terminal device to send uplink narrowband signals in broadband frequency resources, or schedule the terminal device to send uplink broadband signals in broadband frequency resources through a narrowband physical downlink control channel, thereby improving the transmission performance of the communication system. On the other hand, a wide-narrow fusion scheduling mechanism is introduced. The terminal side can configure the transmission path of narrowband baseband processing and broadband RF processing by controlling the path selection module based on the scheduling of the network side. When sending uplink narrowband signals, the broadband RF path can be reused to realize the sharing of spectrum resources and improve the utilization rate of frequency resources.

[0108] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0109] For example, Figure 2 Schematic diagram of the structure of the multi-mode chip that integrates broadband and narrowband provided in the embodiment of the present application Figure 1 .like Figure 2 As shown, the broadband and narrowband integrated multi-mode chip of this embodiment includes: a baseband chip, a radio frequency chip, an application processor and a path selection module. The baseband chip is connected to the radio frequency chip through the path selection module, and the application processor is connected to the path selection module and the baseband chip respectively.

[0110] In some embodiments, the baseband chip may include multiple baseband processing modules, and multi-channel baseband processing may improve the processing speed of the baseband chip. The RF chip may include multiple RF processing modules, and multi-channel RF processing may improve the processing speed of the RF chip.

[0111] In some embodiments, the application processor is used to configure a transmission path for transmitting an uplink narrowband signal or an uplink broadband signal by controlling a path selection module according to scheduling information from a network device.

[0112] The multi-mode chip shown in this embodiment adds a path selection module, supports multiple transmission modes, and can be applied to terminal devices of a multi-mode communication system. The terminal devices can send uplink signals based on the transmission mode scheduled by the network side. The path selection module in the multi-mode chip can be regarded as a selection switch module. Under the control of the application processor, a baseband processing module in the baseband chip can be connected to one or more radio frequency processing modules in the radio frequency chip to realize multiple transmission modes.

[0113] The transmission modes supported by the multi-mode chip are: the first transmission mode, the second transmission mode and the third transmission mode. The first transmission mode is to send an uplink narrowband signal on a broadband frequency, the second transmission mode is to send an uplink narrowband signal on a narrowband frequency, and the third transmission mode is to send an uplink broadband signal on a broadband frequency.

[0114] For example, Figure 3 Schematic diagram of the structure of the multi-mode chip that integrates broadband and narrowband provided in the embodiment of the present application Figure 2 .like Figure 3 As shown, the baseband chip includes a narrowband baseband processing module and a broadband baseband processing module. The narrowband baseband processing module is used to perform baseband processing on the uplink narrowband signal, and the broadband baseband processing module is used to perform baseband processing on the uplink broadband signal. The RF chip includes a narrowband RF processing module and a broadband RF processing module. The narrowband RF processing module is used to perform RF modulation on the uplink narrowband signal, and the broadband RF processing module is used to perform RF modulation on the uplink narrowband signal or the uplink broadband signal.

[0115] In some embodiments, one end of the path selection module is connected to the narrowband baseband processing module and the wideband baseband processing module respectively, and the other end of the path selection module is connected to the narrowband radio frequency processing module and the wideband radio frequency processing module respectively.

[0116] In some embodiments, the application processor is connected to the path selection module to control the path selection module. The application processor is respectively connected to the narrowband baseband processing module and the broadband baseband processing module of the baseband chip.

[0117] In some embodiments, the path selection module is integrated into the baseband chip, such as Figure 4 shown.

[0118] In some embodiments, the application processor is integrated into the baseband chip, such as Figure 4 shown.

[0119] In some embodiments, if the scheduling information is used to indicate that an uplink narrowband signal is sent on a broadband frequency, the application processor is used to configure a first signal transmission path through a control path selection module, and the first signal transmission path includes a narrowband baseband processing module and a broadband radio frequency processing module, such as Figure 5 The transmission mode corresponding to the first signal transmission path is the first transmission mode, that is, the uplink narrowband signal is transmitted on the broadband frequency, and the uplink narrowband signal is processed by the narrowband basic processing module and the broadband radio frequency processing module in sequence, and then processed by the radio frequency front end, and then sent to the antenna for transmission.

[0120] In some embodiments, if the scheduling information is used to indicate that an uplink narrowband signal is sent on a narrowband frequency, the application processor is used to configure a second signal transmission path by controlling the path selection module, and the second signal transmission path includes a narrowband baseband processing module and a narrowband radio frequency processing module, such as Figure 5 The transmission mode corresponding to the second signal transmission path is the second transmission mode, that is, the uplink narrowband signal is transmitted on the narrowband frequency, and the uplink narrowband signal is processed by the narrowband baseband processing module and the narrowband RF processing module in sequence, and then processed by the RF front end, and then sent to the antenna for transmission.

[0121] In some embodiments, if the scheduling information is used to indicate that an uplink broadband signal is sent on a broadband frequency, the application processor is used to configure a third signal transmission path through a control path selection module, and the third signal transmission path includes a broadband baseband processing module and a broadband radio frequency processing module, such as Figure 5 The transmission mode corresponding to the third signal transmission path is the third transmission mode, that is, the uplink broadband signal is transmitted at a broadband frequency, and the uplink broadband signal is processed by the broadband baseband processing module and the broadband RF processing module in sequence, and then processed by the RF front end before being sent to the antenna for transmission.

[0122] In some embodiments, a transmission parameter set is preconfigured (predefined) in the application processor, and the transmission parameter set includes at least one of the following: a first index of a first transmission mode for transmitting an uplink narrowband signal and a transmission parameter set corresponding to the first index; or a second index of a second transmission mode for transmitting an uplink narrowband signal and a transmission parameter set corresponding to the second index; or a third index of a third transmission mode for transmitting an uplink broadband signal and a transmission parameter set corresponding to the third index. The application processor is configured to send an uplink narrowband signal or an uplink broadband signal by querying the transmission parameter set corresponding to the index indicated in the scheduling information.

[0123] The preconfigured transmission parameter set includes but is not limited to modulation mode, coding mode, transmission power, etc. In a multi-modal communication system, by preconfiguring the above transmission parameter set, the network device can carry the index corresponding to the transmission parameter set in the scheduling information to indicate the transmission mode corresponding to the index to the terminal device, which can save the overhead of signaling interaction.

[0124] Based on the index in the scheduling information, the terminal device queries the correspondence between the pre-configured transmission parameter set and the index, and sends the uplink signal based on the transmission parameter set corresponding to the index. Carrying the index in the scheduling information can save the overhead of signaling interaction and improve the transmission performance of the communication system.

[0125] In a multimodal communication system, the terminal device is equipped with the multimode chip shown in the above embodiment. Based on the scheduling on the network side, the uplink narrowband signal can be controlled to be sent at a narrowband frequency or a broadband frequency, or the uplink broadband signal can be controlled to be sent at a broadband frequency.

[0126] The signal transmission method is described in detail below in conjunction with several specific embodiments.

[0127] For example, Figure 6 Schematic diagram of the signal transmission method provided in the embodiment of the present application Figure 1 .

[0128] like Figure 6 As shown, the signal transmission method of this embodiment includes the following steps:

[0129] S601. A network device sends scheduling information to a terminal device, where the scheduling information is used to indicate a transmission mode of an uplink signal sent by the terminal device.

[0130] In some embodiments, the network device sends scheduling information to the terminal device on a narrowband physical downlink control channel. Correspondingly, the terminal device receives scheduling information from the network device on the narrowband physical downlink control channel.

[0131] In some embodiments, the network device generates scheduling information by detecting the signal reception and interference conditions of the narrowband signal and the broadband signal to indicate the terminal device based on which transmission mode to send the uplink signal. The transmission mode of the terminal device includes a first transmission mode, a second transmission mode and a third transmission mode. The first transmission mode is to send an uplink narrowband signal on a broadband frequency, the second transmission mode is to send an uplink narrowband signal on a narrowband frequency, and the third transmission mode is to send an uplink broadband signal on a broadband frequency.

[0132] S602. The terminal device sends an uplink signal based on the sending mode indicated by the scheduling information.

[0133] In some embodiments, the scheduling information is used to indicate that the transmission mode of the uplink signal sent by the terminal device is the first transmission mode, that is, to indicate that the terminal device sends an uplink narrowband signal on a broadband frequency. Based on the scheduling information, the terminal device sends an uplink narrowband signal on a broadband frequency.

[0134] In some embodiments, the scheduling information is used to indicate that the transmission mode of the uplink signal sent by the terminal device is the second transmission mode, that is, to indicate that the terminal device sends an uplink narrowband signal on a narrowband frequency. Based on the scheduling information, the terminal device sends an uplink narrowband signal on a narrowband frequency.

[0135] In some embodiments, the scheduling information is used to indicate that the transmission mode of the uplink signal sent by the terminal device is the third transmission mode, that is, to indicate that the terminal device sends the uplink broadband signal on the broadband frequency. Based on the scheduling information, the terminal device sends the uplink broadband signal on the broadband frequency.

[0136] In some embodiments, the scheduling information includes an index for indicating a transmission mode of an uplink signal transmitted by a terminal device. For example, a first index corresponds to a first transmission mode, a second index corresponds to a second transmission mode, and a third index corresponds to a third transmission mode.

[0137] The terminal device obtains the transmission parameter set corresponding to the index in the scheduling information by querying the correspondence between the pre-configured transmission parameter set and the index. The terminal device sends an uplink signal based on the transmission parameter set corresponding to the index in the scheduling information.

[0138] In one example, the index indicated by the scheduling information is a first index, the first index corresponds to a first transmission mode, the terminal device obtains a transmission parameter set corresponding to the first index, and sends an uplink narrowband signal on a broadband frequency.

[0139] In one example, the index indicated by the scheduling information is a second index, the second index corresponds to a second transmission mode, the terminal device obtains a transmission parameter set corresponding to the second index, and sends an uplink narrowband signal on a narrowband frequency.

[0140] In the above two examples, the sending of the uplink narrowband signal includes the retransmission or new transmission of the uplink narrowband signal.

[0141] In one example, the index indicated by the scheduling information is a third index, the third index corresponds to a third transmission mode, the terminal device obtains a transmission parameter set corresponding to the third index, and sends an uplink broadband signal on a broadband frequency.

[0142] In the above example, the sending of the uplink broadband signal includes retransmission or new transmission of the uplink broadband signal.

[0143] It should be understood that different sending modes in this embodiment correspond to different sending parameter sets.

[0144] The signal transmission method shown in this embodiment is that the terminal device can send an uplink narrowband signal or an uplink broadband signal based on the transmission mode indicated in the scheduling information sent by the network device. The scheduling information can be carried on a narrowband physical downlink control channel, that is, the network device can schedule the transmission of an uplink narrowband signal or an uplink broadband signal through a narrowband downlink channel. The existing scheme does not support the uplink transmission of broadband signals through narrowband scheduling. The above scheme supports the uplink transmission of narrowband signals or broadband signals through narrowband scheduling, thereby improving the transmission performance of the communication system.

[0145] For example, Figure 7 Schematic diagram of the signal transmission method provided in the embodiment of the present application Figure 2 .

[0146] like Figure 7 As shown, the signal transmission method of this embodiment includes the following steps:

[0147] S701. Under a first condition, a network device sends scheduling information to a terminal device, where the scheduling information is used to instruct the terminal device to send an uplink narrowband signal on a broadband frequency.

[0148] In this embodiment, the first condition includes at least one of the following: the broadband frequency resources are idle; or the broadband frequency resources are allowed to be preempted; or there is interference in sending uplink narrowband signals at narrowband frequencies; or the narrowband frequency resources are limited.

[0149] In some embodiments, the network device detects the signal reception and interference conditions of narrowband signals and broadband signals and determines that there is interference when sending uplink narrowband signals at narrowband frequencies, or that narrowband frequency resources are limited while broadband frequency resources are idle and available. The network device may send scheduling information to the terminal device via a narrowband physical downlink control channel to instruct the terminal device to use broadband frequencies to send uplink narrowband signals, i.e., to schedule the uplink narrowband signals to be sent at broadband frequencies.

[0150] In some embodiments, reference Figure 4 and Figure 5 The application processor of the terminal device configures the first signal transmission path by controlling the path selection module, and the first signal transmission path includes the narrowband baseband processing module of the baseband chip and the broadband radio frequency processing module of the radio frequency chip. The terminal device transmits the uplink narrowband signal at the broadband frequency through the first signal transmission path. In this embodiment, the terminal device does not need to be configured with a narrowband radio frequency path at the broadband frequency, and the narrowband signal shares the broadband radio frequency path by controlling the path selection module.

[0151] S702. The terminal device sends an uplink signal on a broadband frequency based on the scheduling information, where the uplink signal includes an uplink narrowband signal.

[0152] In some embodiments, the terminal device may send an uplink narrowband signal on the broadband frequency while sending an uplink broadband signal on the broadband frequency based on the scheduling information. Accordingly, the network device receives an uplink signal from the terminal device on the broadband frequency, and the uplink signal may include both an uplink narrowband signal and an uplink broadband signal. The network device may extract the uplink narrowband signal by executing S703.

[0153] S703: The network device separates an uplink narrowband signal from the uplink signal.

[0154] S704: The network device transmits the uplink narrowband signal to a narrowband baseband processing module of the network device for processing.

[0155] In some embodiments, if the uplink signal also includes an uplink broadband signal, the network device may separate the uplink broadband signal from the uplink signal, and transmit the uplink broadband signal to a broadband baseband processing module of the network device for processing.

[0156] In the signal transmission method shown in this embodiment, when the first condition is met, the network device sends scheduling information to the terminal device through the narrowband control channel, instructing the terminal device to send an uplink narrowband signal and / or an uplink broadband signal on a broadband frequency. The terminal device can reuse the broadband radio frequency path when sending an uplink narrowband signal, realize the sharing of frequency resources, and improve the utilization rate of frequency resources.

[0157] Figure 8 Schematic diagram of the signal transmission method provided in the embodiment of the present application Figure 4 .like Figure 8 As shown, the signal transmission method of this embodiment includes the following steps:

[0158] S801. Under the second condition, the network device sends scheduling information to the terminal device, where the scheduling information is used to instruct the terminal device to send an uplink broadband signal on a broadband frequency.

[0159] In this embodiment, the second condition includes at least one of the following: the narrowband signal coverage is normal and the broadband signal coverage is weak; or, the uplink single sideband frequency resource is available. Normal narrowband signal coverage means that the signal strength of the narrowband signal within its coverage is greater than or equal to a preset threshold. Weak broadband signal coverage means that the signal strength of the broadband signal within its coverage is less than a preset threshold.

[0160] In some embodiments, the network device determines that the narrowband signal coverage is normal and the broadband signal coverage is weak by detecting the signal reception and interference conditions of the narrowband signal and the broadband signal, or the uplink single-sideband frequency resources are available. The network device can send scheduling information to the terminal device through the narrowband physical downlink control channel to instruct the terminal device to use the broadband frequency to send the uplink narrowband signal, that is, to schedule the uplink broadband signal to be sent on the broadband frequency.

[0161] In some embodiments, reference Figure 4 and Figure 5 The application processor of the terminal device configures the third signal transmission path by controlling the path selection module, and the third signal transmission path includes the broadband baseband processing module of the baseband chip and the broadband radio frequency processing module of the radio frequency chip. The terminal device transmits the uplink broadband signal at the broadband frequency through the third signal transmission path.

[0162] S802. The terminal device sends an uplink signal on a broadband frequency based on the scheduling information, where the uplink signal includes an uplink broadband signal.

[0163] In some embodiments, the terminal device may send an uplink narrowband signal on the broadband frequency while sending an uplink broadband signal on the broadband frequency based on the scheduling information. Accordingly, the network device receives an uplink signal from the terminal device on the broadband frequency, and the uplink signal may include both an uplink narrowband signal and an uplink broadband signal. The network device may extract the uplink broadband signal by executing S803.

[0164] S803: The network device separates the uplink broadband signal from the uplink signal.

[0165] S804: The network device transmits the uplink broadband signal to a broadband baseband processing module of the network device for processing.

[0166] In some embodiments, if the uplink signal also includes an uplink narrowband signal, the network device may separate the uplink narrowband signal from the uplink signal and transmit the uplink narrowband signal to a narrowband baseband processing module of the network device for processing.

[0167] The signal transmission method shown in this embodiment, when the second condition is met, the network device can send scheduling information to the terminal device through the narrowband control channel to instruct the terminal device to send an uplink broadband signal on the broadband frequency. The existing method does not support the uplink transmission of broadband signals through the narrowband control channel. The above scheme supports the uplink transmission of broadband signals through narrowband scheduling, which can improve the transmission performance of the communication system.

[0168] In some embodiments, reference Figure 4 and Figure 5 The application processor of the terminal device configures the second signal transmission path through the control path selection module, and the second signal transmission path includes the narrowband baseband processing module of the baseband chip and the narrowband radio frequency processing module of the radio frequency chip. The terminal device sends an uplink narrowband signal on a narrowband frequency through the second signal transmission path. In the signal transmission method shown in this embodiment, the network device can send scheduling information to the terminal device through a narrowband control channel, instructing the terminal device to send an uplink narrowband signal on a narrowband frequency. This transmission mode is the existing transmission mode of the current system.

[0169] The public security sector has established a PDT network that supports voice point-to-point calls, voice trunking, and data services with small data volumes. With the expansion of service requirements, the demand for broadband private networks that support multimedia convergence services such as pictures, videos, and real-time positioning, as well as command and dispatch, based on voice trunking communications, is becoming increasingly urgent. Narrowband communication systems can no longer meet existing service requirements. Existing PDT or TETRA are analyzing and introducing broadband evolution solutions.

[0170] For example, Fig. 9 A schematic diagram of spectrum resource allocation provided in an embodiment of the present application. Fig. 9 As shown in the figure, in the field of public safety, the existing spectrum resource allocation is as follows:

[0171] 1) 336-344MHz is the uplink image transmission frequency range, which can be used for public safety image acquisition. You can apply for continuous 4MHz or two non-continuous 2MHz, and 336-340MHz can be used first.

[0172] 2) 2×5MHz frequency division duplex (FDD) of 351–356MHz (uplink UL) / 361-366MHz (downlink DL) is the frequency range of the narrowband PDT system.

[0173] 3) 1430–1438 MHz is a dedicated frequency range for helicopters and UAVs, dedicated to one-way image transmission.

[0174] The narrowband PDT system has limited frequency resources and channels and is mainly used for voice communication. In medium and large-scale terminal usage scenarios, it can only support the upload of a small amount of Geographic Information System (GIS) information. When the 340MHz image transmission channel is idle, it is currently unable to schedule support for uplink data transmission, nor does it support triggering the upload of uplink image data.

[0175] Based on the mechanism of scheduling wide and narrow wireless resources through narrowband channels in the aforementioned embodiment, the network side (or system side) may support:

[0176] 1) Scheduling broadband frequency resources through a narrowband physical downlink control channel to send an uplink narrowband signal, that is, the first sending mode of the aforementioned embodiment.

[0177] The first transmission mode is an extended transmission mode. For example, the broadband frequency can be defined as 336-344MHz. The network side can directly or indirectly instruct the terminal side to send an uplink narrowband signal on the broadband frequency. Direct indication refers to indicating the value of the broadband frequency interval in the scheduling information, and indirect indication refers to indicating an index or identifier in the scheduling information. The network side and the terminal side preset the corresponding relationship between the index or identifier and the broadband frequency interval in advance. The terminal side obtains the broadband frequency interval based on the index or identifier and sends an uplink narrowband signal within the interval.

[0178] The network side detects the uplink 336-344MHz signal transmission, measures the received signal code power (RSCP), received signal strength indication (RSSI) and interference signal code power (ISCP) and other signal conditions in the frequency band, and dispatches and controls the uplink GIS data of the PDT terminal to be sent at the uplink frequency of 336-344MHz according to the frequency usage and interference conditions. Specifically, the baseband signal adopts the PDT technical standard for signal processing (which may correspond to the narrowband baseband processing module of the aforementioned embodiment), and the radio frequency path adopts the shared broadband 336-344MHz radio frequency path for transmission (which may correspond to the broadband radio frequency processing module of the aforementioned embodiment). That is to say, after the baseband signal processing is completed, the terminal switches the PDT baseband signal to the 340MHz broadband radio frequency path for transmission through the path selection module.

[0179] 2) The uplink narrowband signal is sent by scheduling narrowband frequency resources through the narrowband physical downlink control channel, that is, the second sending mode of the aforementioned embodiment.

[0180] In one example, the network side controls the uplink transmission of the PDT voice signal or the GIS signal in the above-mentioned narrowband frequency of 351-356 MHz by sending a narrowband physical downlink control channel.

[0181] 3) Scheduling broadband frequency resources through a narrowband physical downlink control channel to send an uplink broadband signal, that is, the third sending mode of the aforementioned embodiment.

[0182] In one example, a transmission parameter set for 336-344MHz broadband services is predefined, such as a video service parameter set for 1MBps / 2M / 4MBps orthogonal frequency division multiplexing (OFDM). The network side detects the uplink 336-344MHz signal transmission, measures the RSCP, RSSI and ISCP of the frequency band, and schedules the terminal side to send broadband signals for video services at 336-344MHz through a narrowband physical downlink control channel based on frequency usage and interference.

[0183] In one example, the 340MHz image transmission does not support voice. If image transmission + voice communication is needed, a set of concurrent video and voice services of 1Mbps+PDT narrowband voice coding (NVOC) can be predefined, and scheduling information can be sent through a narrowband physical downlink control channel to implement narrowband channel scheduling for uplink transmission of broadband video and voice.

[0184] Fig.10 A schematic diagram of the structure of the signal transmission device provided in the embodiment of the present application Figure 1 .like Fig.10 As shown, the signal transmission device 1000 of this embodiment includes: a receiving module 1001 and a sending module 1002 .

[0185] The receiving module 1001 is used to receive scheduling information from a network device, where the scheduling information is used to indicate a sending mode of an uplink signal sent by the sending module 1002; the sending mode of the uplink signal includes at least one of the following: sending an uplink narrowband signal on a narrowband frequency, or sending an uplink narrowband signal on a broadband frequency, or sending an uplink broadband signal on a broadband frequency;

[0186] The sending module 1002 is used to send the uplink signal based on the sending mode indicated by the scheduling information.

[0187] In an optional embodiment, the receiving module 1001 is configured to receive the scheduling information on a narrowband physical downlink control channel.

[0188] In an optional embodiment, the receiving module 1001 is used to receive, under a first condition, scheduling information from the network device for instructing the sending module 1002 to send the uplink narrowband signal on the broadband frequency;

[0189] The first condition includes at least one of the following:

[0190] Broadband frequency resources are idle; or

[0191] Broadband frequency resources are allowed to be preempted; or

[0192] There is interference in sending the uplink narrowband signal at the narrowband frequency; or

[0193] Narrowband frequency resources are limited.

[0194] In an optional embodiment, the scheduling information includes an index for indicating a transmission mode in which the sending module 1002 sends the uplink signal;

[0195] The signal transmission device 1000 further includes: a processing module 1003;

[0196] The processing module 1003 is used to obtain the transmission parameter set corresponding to the index in the scheduling information by querying the correspondence between the pre-configured transmission parameter set and the index;

[0197] The sending module 1002 is used to send the uplink signal based on the sending parameter set corresponding to the index in the scheduling information.

[0198] In an optional embodiment, if the scheduling information is used to instruct the sending module 1002 to send the uplink narrowband signal on the broadband frequency; the application processor of the signal transmission device 1000 configures the first signal sending path by controlling the path selection module, and the sending module 1002 sends the uplink narrowband signal on the broadband frequency via the first signal sending path; the first signal sending path includes a narrowband baseband processing module and a broadband radio frequency processing module.

[0199] In an optional embodiment, if the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a narrowband frequency; the application processor of the signal transmission device 1000 configures a second signal sending path by controlling the path selection module, and the sending module 1003 sends the uplink narrowband signal on the narrowband frequency via the second signal sending path; the second signal sending path includes a narrowband baseband processing module and a narrowband radio frequency processing module.

[0200] In an optional embodiment, the receiving module 1001 is used to receive, under the second condition, scheduling information from the network device for instructing the sending module 1002 to send the uplink broadband signal on the broadband frequency;

[0201] The second condition includes at least one of the following:

[0202] Narrowband coverage is normal but broadband coverage is weak; or

[0203] Uplink single sideband frequency resources are available.

[0204] In an optional embodiment, if the scheduling information is used to instruct the terminal device to send the uplink broadband signal on the broadband frequency; the application processor of the signal transmission device 1000 configures the third signal transmission path by controlling the path selection module, and the sending module 1002 sends the uplink broadband signal on the broadband frequency via the third signal transmission path;

[0205] The third signal transmission path includes a broadband baseband processing module and a broadband radio frequency processing module.

[0206] The signal transmission device provided in the embodiment of the present application is used to implement the technical solution of the terminal equipment in the aforementioned method embodiment. Its implementation principle and technical effect are similar and will not be repeated here.

[0207] Fig.11 A schematic diagram of the structure of the signal transmission device provided in the embodiment of the present application Figure 2 .like Fig.11 As shown, the signal transmission device 1100 of this embodiment includes: a sending module 1101 and a receiving module 1102 .

[0208] The sending module 1101 is used to send scheduling information to the terminal device, where the scheduling information is used to indicate a sending mode for the terminal device to send an uplink signal;

[0209] The transmission mode of the uplink signal includes at least one of the following: transmitting the uplink narrowband signal at a narrowband frequency, or transmitting the uplink narrowband signal at a broadband frequency, or transmitting the uplink broadband signal at a broadband frequency;

[0210] The receiving module 1102 is used to receive the uplink signal from the terminal device based on the transmission mode of the uplink signal indicated by the scheduling information.

[0211] In an optional embodiment, the sending module 1101 is used to send, under a first condition, to the terminal device scheduling information for instructing the terminal device to send the uplink narrowband signal on the broadband frequency;

[0212] The first condition includes at least one of the following:

[0213] Broadband frequency resources are idle; or

[0214] Broadband frequency resources are allowed to be preempted; or

[0215] There is interference in sending the uplink narrowband signal at the narrowband frequency; or

[0216] Narrowband frequency resources are limited.

[0217] In an optional embodiment, if the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a broadband frequency, the receiving module 1102 is used to receive an uplink signal on the broadband frequency, and the uplink signal includes the uplink narrowband signal;

[0218] The signal transmission device 1100 further includes a signal extraction module 1103;

[0219] The signal extraction module 1103 is used to separate the uplink narrowband signal from the uplink signal; and transmit the uplink narrowband signal to the narrowband baseband processing module of the signal transmission device 1100 for processing.

[0220] In an optional embodiment, the sending module 1101 is used to send, under the second condition, to the terminal device scheduling information for instructing the terminal device to send the uplink broadband signal on the broadband frequency;

[0221] The second condition includes at least one of the following:

[0222] Narrowband coverage is normal but broadband coverage is weak; or

[0223] Uplink single sideband frequency resources are available.

[0224] In an optional embodiment, if the scheduling information is used to instruct the terminal device to send the uplink broadband signal on a broadband frequency, the receiving module 1102 is used to receive an uplink signal on the broadband frequency, and the uplink signal includes the uplink broadband signal;

[0225] The signal extraction module 1103 is used to separate the uplink broadband signal from the uplink signal; and transmit the uplink broadband signal to the broadband baseband processing module of the signal transmission device 1100 for processing.

[0226] The signal transmission device provided in the embodiment of the present application is used to implement the technical solution of the network device in the aforementioned method embodiment. Its implementation principle and technical effect are similar and will not be repeated here.

[0227] Fig.12 A schematic diagram of the structure of the terminal device provided in the embodiment of the present application Figure 2 .like Fig.12 As shown, the terminal device 1200 of this embodiment includes: a processor 1201 and a memory 1202; the memory 1202 stores computer-executable instructions; the processor 1201 executes the computer-executable instructions stored in the memory 1202, so that the terminal device 1200 performs the method steps of the terminal device in any of the above-mentioned method embodiments. The implementation principles and technical effects are similar and will not be repeated here.

[0228] Fig.13 This is a schematic diagram of the structure of the network device provided in the embodiment of the present application. Fig.13 As shown, the network device 1300 of this embodiment includes: a processor 1301 and a memory 1302; the memory 1302 stores computer-executable instructions; the processor 1301 executes the computer-executable instructions stored in the memory 1302, so that the network device 1300 performs the method steps of the network device in any of the above-mentioned method embodiments. The implementation principles and technical effects are similar and will not be repeated here.

[0229] Fig.14 A schematic diagram of the structure of the terminal device provided in the embodiment of the present application Figure 3 .like Fig.14 As shown, the terminal device of this embodiment includes: a broadband and narrowband integrated multi-mode chip 1401, a radio frequency front end 1402 and an antenna 1403, wherein the multi-mode chip 1401 is connected to the radio frequency front end 1402, and the radio frequency front end 1402 is connected to the antenna. The multi-mode chip 1401 can be the aforementioned Figure 2 , Figure 3 or Figure 4 The functions and technical effects of the multi-mode chip shown can be referred to the aforementioned embodiments and will not be described in detail here.

[0230] The embodiment of the present application proposes a communication system, including: at least one terminal device and a network device, wherein the at least one terminal device is in communication connection with the network device; the at least one terminal device executes the method steps of the terminal device in any of the aforementioned method embodiments, and the network device executes the method steps of the network device in any of the aforementioned method embodiments. Its implementation principle and technical effects are similar to those of the above-mentioned related embodiments, and will not be repeated here.

[0231] The embodiment of the present application proposes a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps of the terminal device in any of the above-mentioned method embodiments are implemented. The implementation principle and technical effect are similar to those of the above-mentioned related embodiments, and will not be repeated here.

[0232] The embodiment of the present application proposes a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps of the network device in any of the above-mentioned method embodiments are implemented. The implementation principle and technical effect are similar to those of the above-mentioned related embodiments, and will not be repeated here.

[0233] The present application embodiment provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the method steps of the terminal device in any of the above method embodiments. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0234] The embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the method steps of the network device in any of the above method embodiments. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0235] The embodiment of the present application provides a chip, the chip includes a processor, the processor is used to call a computer program in a memory to execute the method steps of the terminal device in any of the above method embodiments. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0236] The embodiment of the present application provides a chip, the chip includes a processor, the processor is used to call a computer program in a memory to execute the method steps of the network device in any of the above method embodiments. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0237] The methods described in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted on a computer-readable medium. Computer-readable media may include computer storage media and communication media, and may also include any medium that can transfer a computer program from one place to another. The storage medium may be any target medium that can be accessed by a computer.

[0238] Computer readable media may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disk storage, disk storage or other magnetic storage devices, or any other medium that is intended to carry or store the required program code in the form of instructions or data structures and can be accessed by the computer. Moreover, any connection is appropriately referred to as a computer readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave), the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of medium. Disks and optical disks as used herein include optical disks, laser disks, optical disks, digital versatile disks (DVD), floppy disks and Blu-ray disks, where disks usually reproduce data magnetically, while optical disks reproduce data optically using lasers. Combinations of the above should also be included in the scope of computer readable media.

[0239] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable device to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0240] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present invention should be included in the scope of protection of the present invention.

Claims

1. A signal transmission method, characterized in that: include: The terminal device receives scheduling information from the network device, wherein the scheduling information is used to indicate a transmission mode of an uplink signal sent by the terminal device; the transmission mode of the uplink signal includes at least one of the following: sending an uplink narrowband signal on a narrowband frequency, or sending an uplink narrowband signal on a broadband frequency, or sending an uplink broadband signal on a broadband frequency; The terminal device sends the uplink signal based on the sending mode indicated by the scheduling information.

2. The method according to claim 1, characterized in that The terminal device receives the scheduling information from the network device, including: The terminal device receives the scheduling information on a narrowband physical downlink control channel.

3. The method according to claim 1 or 2, characterized in that: The terminal device receives the scheduling information from the network device, including: Under the first condition, the terminal device receives scheduling information from the network device for instructing the terminal device to send the uplink narrowband signal on the broadband frequency; The first condition includes at least one of the following: Broadband frequency resources are idle; or Broadband frequency resources are allowed to be preempted; or There is interference in sending the uplink narrowband signal at the narrowband frequency; or Narrowband frequency resources are limited.

4. The method according to any one of claims 1 to 3, characterized in that: The scheduling information includes an index for indicating a transmission mode in which the terminal device transmits the uplink signal; The method further comprises: The terminal device obtains the sending parameter set corresponding to the index in the scheduling information by querying the correspondence between the pre-configured sending parameter set and the index; The terminal device sends the uplink signal based on the scheduling information, including: The terminal device sends the uplink signal based on the sending parameter set corresponding to the index in the scheduling information.

5. The method according to any one of claims 1 to 4, characterized in that: If the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a broadband frequency; The terminal device sending the uplink signal based on the sending mode indicated by the scheduling information includes: The application processor of the terminal device configures the first signal transmission path by controlling the path selection module, and transmits the uplink narrowband signal at the broadband frequency via the first signal transmission path; the first signal transmission path includes a narrowband baseband processing module and a broadband radio frequency processing module.

6. The method according to any one of claims 1 to 4, characterized in that: If the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a narrowband frequency; The terminal device sending the uplink signal based on the sending mode indicated by the scheduling information includes: The application processor of the terminal device configures a second signal transmission path by controlling a path selection module, and transmits the uplink narrowband signal at the narrowband frequency via the second signal transmission path; the second signal transmission path includes a narrowband baseband processing module and a narrowband radio frequency processing module.

7. The method according to any one of claims 1 to 3, characterized in that: The terminal device receives the scheduling information from the network device, including: Under the second condition, the terminal device receives scheduling information from the network device for instructing the terminal device to send the uplink broadband signal on the broadband frequency; The second condition includes at least one of the following: Narrowband coverage is normal but broadband coverage is weak; or Uplink single sideband frequency resources are available.

8. The method according to claim 7, characterized in that If the scheduling information is used to instruct the terminal device to send the uplink broadband signal on a broadband frequency; the terminal device sends the uplink signal based on the sending mode indicated by the scheduling information, including: The application processor of the terminal device configures a third signal transmission path by controlling the path selection module, and transmits the uplink broadband signal at the broadband frequency via the third signal transmission path; The third signal transmission path includes a broadband baseband processing module and a broadband radio frequency processing module.

9. A signal transmission method, characterized in that: include: The network device sends scheduling information to the terminal device, where the scheduling information is used to indicate a sending mode for the terminal device to send an uplink signal; The transmission mode of the uplink signal includes at least one of the following: transmitting the uplink narrowband signal at a narrowband frequency, or transmitting the uplink narrowband signal at a broadband frequency, or transmitting the uplink broadband signal at a broadband frequency; The network device receives the uplink signal from the terminal device based on the transmission mode of the uplink signal indicated by the scheduling information.

10. The method according to claim 9, characterized in that The network device sending the scheduling information to the terminal device includes: Under the first condition, the network device sends scheduling information to the terminal device for instructing the terminal device to send the uplink narrowband signal on the broadband frequency; The first condition includes at least one of the following: Broadband frequency resources are idle; or Broadband frequency resources are allowed to be preempted; or There is interference in sending the uplink narrowband signal at the narrowband frequency; or Narrowband frequency resources are limited.

11. The method according to claim 9 or 10, characterized in that: If the scheduling information is used to instruct the terminal device to send the uplink narrowband signal on a broadband frequency, the network device receives the uplink signal from the terminal device based on the sending mode of the uplink signal indicated by the scheduling information, including: The network device receives an uplink signal at the broadband frequency, the uplink signal comprising the uplink narrowband signal; The method further comprises: The network device separates the uplink narrowband signal from the uplink signal; The network device transmits the uplink narrowband signal to a narrowband baseband processing module of the network device for processing.

12. The method according to claim 9, characterized in that The network device sending the scheduling information to the terminal device includes: Under the second condition, the network device sends scheduling information to the terminal device for instructing the terminal device to send the uplink broadband signal on the broadband frequency; The second condition includes at least one of the following: Narrowband coverage is normal but broadband coverage is weak; or Uplink single sideband frequency resources are available.

13. The method according to claim 9 or 12, characterized in that: If the scheduling information is used to instruct the terminal device to send the uplink broadband signal on a broadband frequency, the network device receives the uplink signal from the terminal device based on the transmission mode of the uplink signal indicated by the scheduling information, including: The network device receives an uplink signal at the broadband frequency, wherein the uplink signal includes the uplink broadband signal; The method further comprises: The network device separates the uplink broadband signal from the uplink signal; The network device transmits the uplink broadband signal to the broadband baseband processing module of the network device for processing.

14. A signal transmission device, characterized in that: The device comprises: A receiving module, configured to receive scheduling information from a network device, wherein the scheduling information is used to indicate a sending mode of an uplink signal sent by a sending module; the sending mode of the uplink signal includes at least one of the following: sending an uplink narrowband signal at a narrowband frequency, or sending the uplink narrowband signal at a broadband frequency, or sending an uplink broadband signal at a broadband frequency; The sending module is used to send the uplink signal based on the sending mode indicated by the scheduling information.

15. A signal transmission device, characterized in that: The device comprises: A sending module, used to send scheduling information to a terminal device, wherein the scheduling information is used to indicate a sending mode for the terminal device to send an uplink signal; The transmission mode of the uplink signal includes at least one of the following: An uplink narrowband signal is sent on a narrowband frequency, or the uplink narrowband signal is sent on a broadband frequency, or the uplink broadband signal is sent on a broadband frequency.

16. A terminal device, characterized in that: include: Processor and memory; The memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 8.

17. A network device, characterized in that: include: Processor and memory; The memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, so that the network device performs the method according to any one of claims 9 to 13.

18. A communication system, characterized in that: include: At least one terminal device and a network device, wherein the at least one terminal device is communicatively connected with the network device; The at least one terminal device executes the method according to any one of claims 1 to 8, and the network device executes the method according to any one of claims 9 to 13.

Images