Communication method and communication device

Abstract

Provided are a communication method and a communication device, the method comprising: if a network device sends a first signal by using a first resource but does not receive response information of the first signal fed back from a terminal device, the terminal device may not detect the first signal; the network device may continue to transmit the second signal using the configured second resource. The second signal can play a warning role, for example, the second signal can indicate that the terminal device is paged or the second signal can indicate that the terminal device misses the first signal. According to the method provided by the embodiment of the invention, the network equipment can distinguish the transmission resource of the conventional first signal from the transmission resource of the second signal used for alarming, and the terminal equipment can start to detect the second signal in the second resource under the condition that the first resource cannot detect the first signal under the condition that the communication link is extremely limited, so that the detection efficiency is improved. Therefore, the success rate of receiving the alarm signal by the terminal equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Art

[0002] In non-terrestrial network (NTN) communication scenarios, when the terminal device does not send or receive data, it usually enters an idle state to save power consumption; when user data arrives, the network device will wake up the idle terminal device through paging to transmit data. However, the terminal device may not be able to receive the paging signal sent by the satellite due to limited communication links or being blocked by obstacles, which affects the communication quality between the terminal device and the satellite. Summary of the invention

[0003] The present application provides a communication method and a communication device, which can improve the success rate of terminal equipment in detecting alarm signals.

[0004] In the first aspect, a communication method is provided. The method can be applied to the terminal device side, that is, the method can be executed by the terminal device, or by a component of the terminal device (such as a chip or a chip system or a circuit or a communication module), and this application does not limit this. The following mainly takes the terminal device as an example for explanation.

[0005] The method may include: the terminal device fails to detect a first signal using a first resource; the terminal device detects a second signal based on first configuration information, the first configuration information is used to configure transmission of the second signal on a second resource, and the second signal is sent by the network device when no response information of the first signal from the terminal device is received.

[0006] Exemplarily, the second signal may be used to indicate that the terminal device is paged, or the second signal may be used to indicate that the terminal device has missed detecting the first signal, etc. This application does not limit this.

[0007] Through the above method, the network device can distinguish the transmission resources of the conventional first signal from the transmission resources of the second signal used for the alarm. When the communication link is extremely limited, the terminal device can start detecting the second signal on the second resource when the first resource cannot detect the first signal, thereby improving the success rate of the terminal device receiving the alarm signal.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the first configuration information includes at least one of the following:

[0009] The period for transmitting the second signal, the time domain offset for transmitting the second signal in each period, the frame carrying the second signal, etc.

[0010] Exemplarily, the period of transmitting the second signal and the measurement granularity of the time domain offset of transmitting the second signal in each period may be a superframe, a system frame, or a subframe, etc., which is not limited in this application. Correspondingly, the frame carrying the second signal may also be a superframe, a system frame, a subframe, etc.

[0011] Through the above method, the network device can periodically configure the frames carrying the second signal, and other frames except the frames carrying the second signal in each period can be used to transmit other signals, thereby reducing resource occupation.

[0012] In combination with the first aspect, in certain implementations of the first aspect, if the frame carrying the second signal is a first frame, the first frame includes Q second frames, and the above-mentioned first configuration information also includes first indication information, and the first indication information is used to indicate at least one second frame among the Q second frames for carrying the second signal, where Q is a positive integer.

[0013] Exemplarily, the first frame may be a superframe, and the second frame may be a system frame or a subframe; or, the first frame may be a system frame, and the second frame may be a subframe.

[0014] Through the above method, a part of the resources in the frame carrying the second signal that is periodically configured can be used to transmit the second signal, and another part of the resources in the frame carrying the second signal can also be used to transmit other signals, which can further reduce resource occupancy.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned terminal device detects the second signal based on the first configuration information, including: the terminal device detects at least one third frame based on the first configuration information, and the at least one third frame includes A synchronization signals and a second signal, and the A synchronization signals are carried in the frame header part of the first third frame in at least one third frame, and A is a positive integer.

[0016] Specifically, the first configuration information further includes at least one of the following:

[0017] The number of synchronization signals included in at least one third frame, the number of different symbol streams corresponding to A synchronization signals included in at least one third frame, the different arrangement orders of the symbol streams corresponding to the A synchronization signals indicate different second configuration information, the frame interval of at least one third frame, the area range allowed for use of the synchronization signal, etc. The second configuration information is used to indicate the transmission parameters of the second signal.

[0018] Exemplarily, the second configuration information includes at least one of the following:

[0019] The number of second signals, the number of times each second signal is repeatedly transmitted, the modulation and coding parameters used by each second signal, etc.

[0020] Through the above method, a frame structure for carrying the second signal is provided, in which the number of repeated transmissions of the second signal can be increased, thereby improving the success rate of the terminal device detecting the second signal. In addition, the above method can implicitly carry the transmission parameters of the second signal through the synchronization signal, thereby reducing the amount of information required to be transmitted.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned terminal device detects at least one third frame based on the first configuration information, including: the terminal device detects A synchronization signals based on the first configuration information, and the terminal device determines a second configuration information based on the arrangement order of the symbol streams corresponding to the detected A synchronization signals; the terminal device receives a second signal based on the determined second configuration information.

[0022] Exemplarily, the number of different symbol streams corresponding to A synchronization signals is A1, and the A1 symbol streams can be arranged in multiple sequences, and the multiple sequences can indicate multiple second configuration information.

[0023] Through the above method, the transmission parameters of the second signal can be adjusted by the arrangement order of the symbol streams corresponding to A synchronization signals without updating the message, which can not only reduce the signaling overhead but also increase the flexibility of the transmission parameters of the second signal.

[0024] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned terminal device detects the second signal based on the first configuration information, including: the terminal device detects multiple fourth frames based on the first configuration information, the multiple fourth frames include a fifth frame and at least one sixth frame, the fifth frame includes B first synchronization signals and first control information, the B first synchronization signals are carried on the frame header part of the fifth frame, each frame in the at least one sixth frame includes C second synchronization signals and a second signal, the C second synchronization signals are carried on the frame header part of each frame in at least one sixth frame, the first control information is used to indicate the transmission parameters of the second signal included in at least one sixth frame, and B and C are positive integers.

[0025] Exemplarily, the first control information is used to indicate at least one of the following:

[0026] The number of second signals, the number of times each second signal is repeatedly transmitted, the modulation and coding parameters used by each second signal, etc.

[0027] Through the above method, another frame structure for carrying the second signal is provided, in which the first control information for controlling the transmission of the second signal and the second signal are respectively carried in different frames. The frame structure can carry more control information for controlling the transmission of the second signal, thereby achieving more accurate scheduling of the second signal and improving the success rate of the terminal device detecting the second signal.

[0028] In combination with the first aspect, in certain implementations of the first aspect, the arrangement order of symbol streams corresponding to the C second synchronization signals included in each frame of the at least one sixth frame is different.

[0029] Specifically, the first configuration information may also include at least one of the following:

[0030] The number of first synchronization signals included in the fifth frame, the association of the first synchronization signal with the control frame, the number of second synchronization signals included in each of at least one sixth frame, the association of the second synchronization signal with the data frame, the number of different symbol streams corresponding to C second synchronization signals, the different arrangement orders of the symbol streams corresponding to the C second synchronization signals indicating different positions of the data frame, the frame interval of multiple fourth frames, the area range allowed for use of the first synchronization signal and the second synchronization signal, etc.

[0031] Exemplarily, the number of different symbol streams corresponding to the C second synchronization signals is C1, and the C1 symbol streams can be arranged in a variety of sequences, and the variety of sequences can indicate the positions of a plurality of data frames.

[0032] Through the above method, control frames and data frames can be distinguished by different synchronization signals, and the position of the current data frame can be indicated by the arrangement order of the symbol streams corresponding to the C second synchronization signals in the data frame, which can reduce the difficulty of parsing the current data frame.

[0033] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned terminal device detects multiple fourth frames based on the first configuration information, including: the terminal device detects the fifth frame based on the first configuration information; the terminal device receives at least one second signal included in the sixth frame based on the first control information included in the fifth frame.

[0034] Specifically, the terminal device detects the fifth frame based on the first configuration information, and determines that the fifth frame is a control frame based on the B first synchronization signals included in the fifth frame; the terminal device parses the first control information included in the fifth frame, and receives the second signal included in at least one subsequent sixth frame based on the first control information.

[0035] Through the above method, the terminal device can distinguish between control frames and data frames and achieve accurate reception of the second signal.

[0036] In combination with the first aspect, in certain implementations of the first aspect, the above method also includes: the terminal device determines the position of the current sixth frame in at least one sixth frame based on the arrangement order of the symbol streams corresponding to C second synchronization signals included in any one of the at least one sixth frame.

[0037] Through the above method, when the terminal device does not receive a control frame, the terminal device can identify the position of the current data frame among all data frames, determine the waiting time required to receive the next control frame, and can parse the current data frame according to the next received control frame to achieve successful parsing of the current data frame.

[0038] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned terminal device detects the second signal based on the first configuration information, including: the terminal device detects at least one seventh frame based on the first configuration information, each seventh frame in the at least one seventh frame includes second control information and a second signal, and the second control information is used to indicate the transmission parameters of the second signal of each seventh frame in the at least one seventh frame.

[0039] Exemplarily, the second control information is used to indicate at least one of the following:

[0040] The time domain resources and frequency domain resources of the second signal carried by each of at least one seventh frame, the type of the second signal carried by each of at least one seventh frame, the public land mobile network (PLMN) to which the second signal carried by each of at least one seventh frame belongs, the sending period of at least one seventh frame, the area where the synchronization signal is allowed to be used, etc.

[0041] Through the above method, another frame structure for carrying a second signal is provided. The frame structure carries the first control information used to control the transmission of the second signal and the second signal in the same frame, so that the parsing of the second signal does not need to rely on other frames, thereby achieving rapid parsing of the second signal.

[0042] In combination with the first aspect, in certain implementations of the first aspect, each of the at least one seventh frame may further include D synchronization signals, and the D synchronization signals are carried in the frame header part of each of the at least one seventh frame, where D is a positive integer.

[0043] Through the above method, frame synchronization can be achieved and accurate reception of the second signal can be realized.

[0044] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned terminal device detects at least one seventh frame based on the first configuration information, including: the terminal device detects the second control information included in any one of the at least one seventh frames based on the above-mentioned first configuration information; the terminal device receives the second signal included in the current seventh frame based on the detected second control information.

[0045] Through the above method, the terminal device can quickly obtain the information carried by the second signal.

[0046] In combination with the first aspect, in some implementations of the first aspect, the first configuration information may be carried in a system message.

[0047] By carrying the first configuration information in the system message, the duration of the terminal device detecting the signal can be reduced, thereby saving power consumption of the terminal device.

[0048] In the second aspect, a communication method is provided. The method can be applied to the network device side, that is, the method can be executed by the network device, or by a component of the network device (such as a chip or a chip system or a circuit or a communication module), and this application does not limit this. The following mainly takes the network device as an example for explanation.

[0049] The method may include: the network device sends a first signal using a first resource; the network device does not receive response information of the first signal from the terminal device; the network device sends a second signal based on first configuration information, and the first configuration information is used to configure the transmission of the second signal on the second resource.

[0050] Exemplarily, the second signal may be used to indicate that the terminal device is paged, or the second signal may be used to indicate that the terminal device has missed detecting the first signal, etc. This application does not limit this.

[0051] Through the above method, the network device can distinguish the transmission resources of the conventional first signal from the transmission resources of the second signal used for the alarm. When the communication link is extremely restricted, the network device learns that the terminal device cannot receive the first signal on the first resource and sends the second signal to the terminal device on the second resource, thereby improving the success rate of the terminal device receiving the alarm signal.

[0052] In conjunction with the second aspect, in some implementations of the second aspect, the first configuration information includes at least one of the following:

[0053] The period for transmitting the second signal, the time domain offset for transmitting the second signal in each period, the frame carrying the second signal, etc.

[0054] Exemplarily, the period of transmitting the second signal and the measurement granularity of the time domain offset of transmitting the second signal in each period may be a superframe, a system frame, or a subframe, etc., which is not limited in this application. Correspondingly, the frame carrying the second signal may also be a superframe, a system frame, a subframe, etc.

[0055] Through the above method, the network device can periodically configure the frames carrying the second signal, and other frames except the frames carrying the second signal in each period can be used to transmit other signals, thereby reducing resource occupation.

[0056] In combination with the second aspect, in certain implementations of the second aspect, if the frame carrying the second signal is a first frame, the first frame includes Q second frames, and the above-mentioned first configuration information also includes first indication information, and the first indication information is used to indicate at least one second frame among the Q second frames for carrying the second signal, where Q is a positive integer.

[0057] Exemplarily, the first frame may be a superframe, and the second frame may be a system frame or a subframe; or, the first frame may be a system frame, and the second frame may be a subframe.

[0058] Through the above method, a part of the resources in the frame carrying the second signal that is periodically configured can be used to transmit the second signal, and another part of the resources in the frame carrying the second signal can also be used to transmit other signals, which can further reduce resource occupancy.

[0059] In combination with the second aspect, in certain implementations of the second aspect, the above-mentioned network device sends a second signal based on the first configuration information, including: the network device sends at least one third frame based on the first configuration information, the at least one third frame includes A synchronization signals and a second signal, the A synchronization signals are carried in the frame header part of the first third frame in at least one third frame, and A is a positive integer.

[0060] Specifically, the first configuration information further includes at least one of the following:

[0061] The number of synchronization signals included in at least one third frame, the number of different symbol streams corresponding to A synchronization signals included in at least one third frame, the different arrangement orders of the symbol streams corresponding to the A synchronization signals indicate different second configuration information, the frame interval of at least one third frame, the area range allowed for use of the synchronization signal, etc. The second configuration information is used to indicate the transmission parameters of the second signal.

[0062] Exemplarily, the second configuration information includes at least one of the following:

[0063] The number of second signals, the number of times each second signal is repeatedly transmitted, the modulation and coding parameters used by each second signal, etc.

[0064] Through the above method, a frame structure for carrying the second signal is provided, in which the number of repeated transmissions of the second signal can be increased, thereby improving the success rate of the terminal device detecting the second signal. In addition, the above method can implicitly carry the transmission parameters of the second signal through the synchronization signal, thereby reducing the amount of information required to be transmitted.

[0065] In combination with the second aspect, in certain implementations of the second aspect, the above-mentioned network device sends a second signal based on the first configuration information, including: the network device sends multiple fourth frames based on the first configuration information, the multiple fourth frames include a fifth frame and at least one sixth frame, the fifth frame includes B first synchronization signals and first control information, the B first synchronization signals are carried on the frame header part of the fifth frame, each frame in the at least one sixth frame includes C second synchronization signals and a second signal, the C second synchronization signals are carried on the frame header part of each frame in at least one sixth frame, the first control information is used to indicate the transmission parameters of the second signal included in at least one sixth frame, and B and C are positive integers.

[0066] Exemplarily, the first control information is used to indicate at least one of the following:

[0067] The number of second signals, the number of times each second signal is repeatedly transmitted, the modulation and coding parameters used by each second signal, etc.

[0068] Through the above method, another frame structure for carrying the second signal is provided, in which the first control information for controlling the transmission of the second signal and the second signal are respectively carried in different frames. The frame structure can carry more control information for controlling the transmission of the second signal, thereby achieving more accurate scheduling of the second signal and improving the success rate of the terminal device detecting the second signal.

[0069] In combination with the second aspect, in certain implementations of the second aspect, the arrangement order of symbol streams corresponding to the C second synchronization signals included in each frame of the at least one sixth frame is different.

[0070] Specifically, the first configuration information may also include at least one of the following:

[0071] The number of first synchronization signals included in the fifth frame, the association of the first synchronization signal with the control frame, the number of second synchronization signals included in each of at least one sixth frame, the association of the second synchronization signal with the data frame, the number of different symbol streams corresponding to C second synchronization signals, the different arrangement orders of the symbol streams corresponding to the C second synchronization signals indicating different positions of the data frame, the frame interval of multiple fourth frames, the area range allowed for use of the first synchronization signal and the second synchronization signal, etc.

[0072] Exemplarily, the number of different symbol streams corresponding to the C second synchronization signals is C1, and the C1 symbol streams can be arranged in a variety of sequences, and the variety of sequences can indicate the positions of a plurality of data frames.

[0073] Through the above method, control frames and data frames can be distinguished by different synchronization signals, and the position of the current data frame can be indicated by the arrangement order of the symbol streams corresponding to the C second synchronization signals in the data frame, which can reduce the difficulty of parsing the current data frame.

[0074] In combination with the second aspect, in certain implementations of the second aspect, the above-mentioned network device sends a second signal based on the first configuration information, including: the network device sends at least one seventh frame based on the first configuration information, each seventh frame in the at least one seventh frame includes second control information and a second signal, and the second control information is used to indicate the transmission parameters of the second signal of each seventh frame in the at least one seventh frame.

[0075] Exemplarily, the second control information is used to indicate at least one of the following:

[0076] The time domain resources and frequency domain resources of the second signal carried by each of at least one seventh frame, the type of the second signal carried by each of at least one seventh frame, the PLMN to which the second signal carried by each of at least one seventh frame belongs, the sending period of at least one seventh frame, the area range where the synchronization signal is allowed to be used, etc.

[0077] Through the above method, another frame structure for carrying a second signal is provided. The frame structure carries the first control information used to control the transmission of the second signal and the second signal in the same frame, so that the parsing of the second signal does not need to rely on other frames, thereby achieving rapid parsing of the second signal.

[0078] In combination with the second aspect, in certain implementations of the second aspect, each of the at least one seventh frame may further include D synchronization signals, and the D synchronization signals are carried in the frame header part of each of the at least one seventh frame, where D is a positive integer.

[0079] By using the above method, frame synchronization can be achieved, and accurate reception of the second signal can be achieved. In conjunction with the second aspect, in some implementations of the second aspect, the above first configuration information can be carried in a system message.

[0080] By carrying the first configuration information in the system message, the duration of the terminal device detecting the signal can be reduced, thereby saving power consumption of the terminal device.

[0081] In a third aspect, a communication device is provided, the device being used to execute the method provided in the first aspect. Specifically, the device may include a module for executing the first aspect and any possible implementation manner of the first aspect.

[0082] In a fourth aspect, a communication device is provided, wherein the device is used to execute the method provided in the second aspect. Specifically, the device may include a module for executing the second aspect and any possible implementation manner of the second aspect.

[0083] In a fifth aspect, a communication device is provided, comprising a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the method in the first aspect and any possible implementation of the first aspect. Optionally, the device also includes a memory. Optionally, the device also includes a communication interface, and the processor is coupled to the communication interface.

[0084] In one implementation, the apparatus is a terminal device. When the apparatus is a terminal device, the communication interface may be a transceiver, or an input / output interface.

[0085] In another implementation, the device is a chip configured in a terminal device. When the device is a chip configured in a terminal device, the communication interface may be an input / output interface.

[0086] In another implementation, the device is a chip or a chip system.

[0087] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0088] In a sixth aspect, a communication device is provided, comprising a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the method in the second aspect and any possible implementation of the second aspect. Optionally, the device also includes a memory. Optionally, the device also includes a communication interface, and the processor is coupled to the communication interface.

[0089] In one implementation, the device is a network device. When the device is a network device, the communication interface may be a transceiver, or an input / output interface.

[0090] In another implementation, the device is a chip configured in a network device. When the device is a chip configured in a network device, the communication interface may be an input / output interface.

[0091] In another implementation, the device is a chip or a chip system.

[0092] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0093] In a seventh aspect, a computer-readable storage medium is provided, on which computer instructions are stored. When the computer instructions are executed by an apparatus, the apparatus implements the method in the first aspect and any possible implementation manner of the first aspect.

[0094] In an eighth aspect, a computer-readable storage medium is provided, on which computer instructions are stored. When the computer instructions are executed by an apparatus, the apparatus implements the method in the second aspect and any possible implementation manner of the second aspect.

[0095] In a ninth aspect, a computer program product comprising instructions is provided, which includes a computer program. When the computer program is executed by an apparatus, the apparatus implements the method provided in the first aspect and any possible implementation manner of the first aspect.

[0096] In a tenth aspect, a computer program product comprising instructions is provided, which includes a computer program. When the computer program is executed by an apparatus, the apparatus implements the method provided in the second aspect and any possible implementation manner of the second aspect.

[0097] In an eleventh aspect, a communication system is provided, comprising the terminal device and the network device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0098] Figure 1 It is a schematic diagram of a network architecture applicable to an embodiment of the present application.

[0099] Figure 2 It is a schematic diagram of an architecture of a communication system applicable to an embodiment of the present application.

[0100] Figure 3 It is a schematic flow chart of a communication method 300 provided in an embodiment of the present application.

[0101] Figure 4 It is a schematic diagram of a frame configuration for carrying a second signal provided in an embodiment of the present application.

[0102] Figure 5 It is a schematic diagram of a frame structure for carrying a second signal provided in an embodiment of the present application.

[0103] Figure 6 It is a schematic diagram of another frame structure for carrying a second signal provided in an embodiment of the present application.

[0104] Figure 7 This is a schematic diagram of another frame structure for carrying a second signal provided in an embodiment of the present application.

[0105] Figure 8 This is a schematic diagram of another frame structure for carrying a second signal provided in an embodiment of the present application.

[0106] Fig. 9 It is a schematic block diagram of a communication device 10 provided in an embodiment of the present application.

[0107] Fig.10 It is a schematic block diagram of another communication device 20 provided in an embodiment of the present application.

[0108] Fig.11 It is a schematic block diagram of the chip system 30 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0109] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0110] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, next generation communication system (e.g., fifth-generation (5G) communication system), fusion system or evolution system of multiple access systems, or future communication system, etc. This application is not limited to this.

[0111] The technical solution provided in the present application can also be applied to machine type communication (MTC), long term evolution-machine (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, IoT network can include vehicle networking, for example. Among them, the communication methods in the vehicle networking system are collectively referred to as vehicle to other devices (vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication or vehicle to network (V2N) communication, etc.

[0112] The network device in the embodiment of the present application may also be referred to as a (radio) access network ((R)AN) device. The (R)AN device is capable of managing wireless resources, providing access services for user devices, and completing the forwarding of user device data between terminal devices and the core network. The (R)AN device may also be understood as a base station in the network, which is a device deployed in a wireless access network to provide wireless communication functions for mobile stations (MS).

[0113] Exemplarily, the network device in the embodiment of the present application may be any communication device with wireless transceiver function for communicating with a terminal device. The network device includes, but is not limited to: Node B (NB), evolved Node B (eNB), radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), home evolved NodeB (HeNB, or home Node B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WiFi) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc., and can also be the next generation Node B (gNB) in 5G system (such as new radio (NR) system), or transmission reception point (TRP), or one or a group of (including multiple antenna panels) antenna panels of a base station in 5G system, or can also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DBU). It can be a base station, a micro base station (also called a small station), a relay station, an access point, etc. It can be understood that all or part of the functions of the network device in the present application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform).

[0114] In some deployments, the network device in the embodiments of the present application may include a centralized unit (CU) and a DU. The network device may also include an active antenna unit (AAU). The CU implements some functions of the network device, and the DU implements some functions of the network device. For example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. The AAU implements some physical layer processing functions, radio frequency processing, and related functions of active antennas. The information of the RRC layer is generated by the CU, and will eventually be encapsulated by the PHY layer of the DU to become the PHY layer information, or, it is converted from the PHY layer information. Therefore, under this architecture, high-level signaling such as RRC layer signaling can also be considered to be sent by the DU, or, by the DU+AAU. It is understandable that the network device may be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as an access network device in the RAN, or as an access network device in the core network (CN), which is not limited in this application.

[0115] The terminal device in the embodiment of the present application may also be referred to as user equipment (UE), terminal, access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal in the embodiment of the present application may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a cellular phone, a smart phone, a wireless data card, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication device, ... assistant, PDA) computer, tablet computer, laptop computer, MTC terminal, wireless modem (medem), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle-mounted device, wearable device, terminal in 5G network or terminal in future evolution network, etc. The terminal device in the embodiment of the present application can be fixed or mobile.

[0116] Among them, wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0117] In the embodiment of the present application, the communication device for realizing the function of the network device may be a network device, or a device having some functions of the network device, or a device capable of supporting the network device to realize the function, such as a chip system, which may be installed in the network device. In the embodiment of the present application, the communication device for realizing the function of the terminal device may be a terminal device, or a device having some functions of the terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, which may be installed in the terminal device.

[0118] In actual network deployment, it is impossible for terrestrial networks to cover all areas, especially in deserts, oceans, and areas with few people such as the North and South Poles. Non-terrestrial networks (NTNs) have a wide coverage area and are easier to provide coverage in places with few people, making them suitable for deployment in areas with few people.

[0119] Figure 1 This is a schematic diagram of an NTN architecture applicable to the embodiment of the present application. The ground terminal accesses the network through the 5G new air interface, and the 5G access network equipment is deployed on the satellite and connected to the ground core network through a wireless link. At the same time, there is a wireless link between the satellites to complete the signaling interaction and user data transmission between the access network equipment and the access network equipment. Figure 1 The various network elements and the interfaces between them are described as follows:

[0120] Terminal device: A mobile device that supports the 5G new air interface, typically a mobile phone, pad, etc. It can access the satellite network through the air interface and initiate calls, surf the Internet, and other services. For details, please refer to the description of the terminal device above.

[0121] 5G access network equipment: mainly provides wireless access services, dispatches wireless resources to access terminals, provides reliable wireless transmission protocols and data encryption protocols, etc.

[0122] 5G core network: user access control, mobility management, session management, user security authentication, billing and other services. It consists of multiple functional units, which can be divided into functional entities of control plane and data plane. The access and mobility management function (AMF) network element is responsible for user access management and control, user security authentication and mobility management. The user plane function (UPF) network element is responsible for managing the transmission of user plane data, traffic statistics and other functions. The session management function (SMF) network element is mainly responsible for the control plane function of terminal device session management.

[0123] Ground station: responsible for forwarding signaling and service data between 5G access network equipment and 5G core network.

[0124] 5G New Air Interface: The wireless link between terminal devices and 5G access network equipment.

[0125] Xn interface: The interface between 5G access network devices, mainly used for signaling interaction such as switching.

[0126] NG interface: The interface between 5G access network equipment and 5G core network equipment, which mainly interacts with the signaling of the non-access stratum (NAS) of the core network and the user's business data.

[0127] Figure 2 Schematic diagram of a communication system of the NTN architecture applicable to the embodiment of the present application. Figure 2 As shown, the communication system may include at least one network device, such as Figure 2 The satellite device shown; the communication system may also include at least one terminal device, such as Figure 2 The network device and the terminal device can communicate via a wireless link.

[0128] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application, as long as it can communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in a terminal device or a network device that can call a program and execute a program.

[0129] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media can include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0130] It should be understood that Figure 2 This article takes the communication between a network device and a terminal device as an example to simply illustrate a communication scenario to which the present application can be applied, and does not limit other scenarios to which the present application can be applied. It should also be understood that Figure 2 This is a simplified schematic diagram for ease of understanding only. The communication system may also include other network devices or other terminal devices. Figure 2 Not drawn in.

[0131] It should be understood that the network device in the communication system can be any device with wireless transceiver function. For details, please refer to the above description of the network device, which will not be repeated here.

[0132] It should also be understood that Figure 2 Only one network device and one terminal device are shown in the figure. As an example, the communication system is not limited to including more terminal devices. For example, in a satellite communication network, a satellite can cover multiple terminal devices for communication. Each terminal device is also not limited to communicating with one network device. For example, after the satellite moves, the terminal device may need to reselect a satellite for access communication.

[0133] Figure 1 and Figure 2The NTN architecture and communication system applicable to the embodiments of the present application are introduced. In the NTN scenario, when the terminal device does not send or receive data, it usually enters the idle state (RRC_IDLE) to save power consumption; when user data arrives at the network device, it wakes up the terminal device in the idle state by paging to transmit data. However, the terminal device may not be able to receive the signal sent by the satellite due to limited communication links, obstructions, etc., resulting in the terminal device and the satellite being unable to communicate normally.

[0134] Based on the above technical problems, the present application provides a communication method 300, which can improve the success rate of terminal equipment detecting alarm signals by designing a method for sending alarm signals.

[0135] Figure 3 3 is a schematic flow chart of a communication method 300 provided in an embodiment of the present application. In this embodiment, a network device and a terminal device are used as an example to illustrate the method, but the present application does not limit the execution subject of the interactive diagram. For example, Figure 3 The network device in the invention may also be a chip, a chip system, or a processor that supports the methods that can be implemented by the network device, or may be a logic module or software that can implement all or part of the network device; the terminal device may also be a chip, a chip system, or a processor that supports the methods that can be implemented by the terminal device, or may be a logic module or software that can implement all or part of the terminal device.

[0136] The communication method 300 may include the following steps:

[0137] S310: The network device sends a first signal using a first resource. Correspondingly, the terminal device detects the first signal using the first resource.

[0138] Exemplarily, the first signal may be any signal, which is not limited in the present application. The first resource may be a resource allocated by the network device to the terminal device for transmitting the first signal.

[0139] S312: The terminal device fails to detect the first signal using the first resource.

[0140] Exemplarily, the terminal device may not receive the first signal due to reasons such as a limited communication link or being blocked by obstacles.

[0141] S314: The network device does not receive response information of the first signal from the terminal device.

[0142] Since the terminal device does not detect the first signal, the terminal device will not send the response information of the first signal. Accordingly, the network device does not receive the response information of the first signal from the terminal device.

[0143] S316, the network device sends a second signal based on the first configuration information. Correspondingly, the terminal device detects the second signal based on the first configuration information.

[0144] Specifically, the network device sends the second signal when the response information of the first signal from the terminal device is not received, or the network device sends the second signal when the response information of the first signal from the terminal device is not received.

[0145] Exemplarily, the first configuration information may be indicated by the network device to the terminal device, or the first configuration information may be specified by the protocol, or the first configuration information may be pre-configured in the terminal device and the network device, which is not limited in the present application.

[0146] Exemplarily, if the first configuration information is indicated by the network device to the terminal device, the first configuration information may be carried in a system message.

[0147] Exemplarily, the second signal may be referred to as an alert signal.

[0148] Specifically, the first configuration information is used to configure the transmission of the second signal on the second resource. Exemplarily, the first configuration information may include at least one of the following:

[0149] The period for transmitting the second signal, the time domain offset for transmitting the second signal in each period, the frame carrying the second signal, etc.

[0150] Exemplarily, the manner in which the first configuration information configures a period for transmitting the second signal and a time domain offset for transmitting the second signal in each period may include the following three:

[0151] Method 1: The period for transmitting the second signal configured by the first configuration information can be measured in hyperframes. Correspondingly, the time domain offset for transmitting the second signal in each period configured by the first configuration information is also measured in hyperframes. Then the frame carrying the second signal configured by the first configuration information is a hyperframe. For example, the first configuration information includes the period for transmitting the second signal (period#1) and the time domain offset for transmitting the second signal in each period (offset#1). The hyperframe number (HFN) that satisfies the following formula 1 is the hyperframe carrying the second signal:

[0152] HFN mod period#1=offset#1[Formula 1]

[0153] An example, such as Figure 4As shown. There are N superframes, namely HFN 1, HFN 2, HFN 3, ..., HFN N. The period of transmitting the second signal configured by the first configuration information is 8 superframes, and the time domain offset of transmitting the second signal in each period is 2 superframes. HFN2, HFN10, HFN18, ... in the N superframes can satisfy the above formula, that is, HFN2, HFN10, HFN18, ... are frames that can be used to carry the second signal, and the remaining other superframes in the N superframes can be used to carry other signals.

[0154] If the frame carrying the second signal is a first frame, and the first frame includes Q second frames, the first configuration information may further include first indication information, and the first indication information is used to indicate at least one second frame in the Q second frames that is used to carry the second signal. In one example, the first frame is a superframe and the second frame is a system frame. Figure 4 As shown, the first frame is HFN2 shown above, and Q second frames are 1024 system frames included in HFN2 for example. The 1024 system frames can be divided into multiple groups, each group is represented by one bit, for example, every 128 system frames in the 1024 system frames are divided into one group, so the first indication information is 10000000, indicating that the first 128 system frames in the 1024 system frames are used to carry the second signal, and the remaining system frames in the 1024 system frames can be used to carry other signals. Here, HFN2 is used as an example for illustration, and other superframes (for example, HFN10, HFN18...) used to carry the second signal can be configured in the same way as HFN2, which will not be repeated here.

[0155] Further, each of the first 128 system frames of the 1024 system frames is composed of 10 subframes, and the 10 subframes are subframe 0, subframe 1, subframe 2, ..., subframe 9. Figure 4 As shown, the first frame is SFN 0 in the first 128 system frames in 1024 system frames, and the second frame is 10 subframes included in SFN 0. The first indication information is 1111111111, indicating that the 10 subframes included in SFN 0 are all used to transmit the second signal, or the first indication information is 1111100000, indicating that the first 5 subframes in the 10 subframes included in SFN0 are used to carry the second signal, and the last 5 subframes in the 10 subframes included in SFN0 are used to carry other signals. SFN 0 is used as an example here, and other system frames in the first 128 system frames in 1024 system frames can be configured in the same way as SFN 0, which will not be repeated here.

[0156] Method 2: The period for transmitting the second signal configured by the first configuration information can be measured in terms of system frames. Correspondingly, the time domain offset for transmitting the second signal in each period configured by the first configuration information is also measured in terms of system frames. Then, the frame carrying the second signal configured by the first configuration information is the system frame. For example, the first configuration information includes the period for transmitting the second signal (period#2) and the time domain offset for transmitting the second signal in each period (offset#2). The system frame number (SFN) that satisfies the following formula 2 is the system frame carrying the alarm signal:

[0157] SFN mod period#2=offset#2[Formula 2]

[0158] Method three: the period for transmitting the second signal configured by the first configuration information can be measured in subframes. Correspondingly, the time domain offset for transmitting the second signal in each period configured by the first configuration information is also measured in subframes. Then the frame carrying the second signal configured by the first configuration information is a subframe. For example, the first configuration information includes the period for transmitting the second signal (period#3) and the time domain offset for transmitting the second signal in each period (offset#3). The subframe that satisfies the following formula 3 is the subframe carrying the second signal:

[0159] subframe mod period#3=offset#3[Formula 3]

[0160] Specifically, the network device may send the second signal in the following three ways:

[0161] Mode 1: The network device sends at least one third frame based on the first configuration information, and the at least one third frame includes A synchronization signals and a second signal, and the A synchronization signals are carried in the frame header part of the first third frame in the at least one third frame.

[0162] In mode 1, the first configuration information may further include at least one of the following:

[0163] The number of synchronization signals included in at least one third frame, the number of different symbol streams corresponding to A synchronization signals included in at least one third frame, different arrangement orders of symbol streams corresponding to A synchronization signals indicate different second configuration information, the frame interval of at least one third frame, the area range where the synchronization signal is allowed to be used, etc.

[0164] Exemplarily, the above-mentioned different symbol streams refer to different bit sequences, and the above-mentioned different arrangement orders of the symbol streams refer to different arrangement orders of the bit sequences.

[0165] Specifically, the second configuration information is used to indicate a transmission parameter of the second signal. For example, the second configuration information includes at least one of the following:

[0166] The number of second signals, the number of times each second signal is repeatedly transmitted, the modulation and coding parameters used by each second signal, etc. For example, the modulation used by each second signal may be quadrature amplitude modulation (QAM) modulation, pulse amplitude modulation (PAM) modulation, phase shift keying (PSK) modulation, etc., and the coding parameters used by each second signal may refer to a coded redundancy version (RV), etc.

[0167] Exemplarily, the number of synchronization signals included in at least one third frame configured by the first configuration information is A, and the number of different symbol streams corresponding to the A synchronization signals included in at least one third frame is A1. The area range in which the synchronization signal is allowed to be used may be a cell level, a tracking area level, or a RAN notification area level, etc.

[0168] For example, Figure 5 The frame structure shown. Mode 1 is described by taking A equal to 8 and A1 equal to 4 as an example, but Mode 1 does not limit the specific values ​​of A and A1. The eight synchronization signals are respectively recorded as synchronization signal 1, synchronization signal 2, synchronization signal 3, synchronization signal 4, synchronization signal 5, synchronization signal 6, synchronization signal 7, and synchronization signal 8, and the four symbol streams corresponding to the eight synchronization signals are symbol stream 1, symbol stream 2, symbol stream 3, and symbol stream 4. For example, the bit sequence indicated by symbol stream 1 is 1100101, the bit sequence indicated by symbol stream 2 is 1110010, the bit sequence indicated by symbol stream 3 is 0111001, and the bit sequence indicated by symbol stream 4 is 1011100.

[0169] For example, in mode 1, the first configuration information may carry different arrangement orders of the above four symbol streams through the following table 1 to indicate different second configuration information:

[0170] Table 1

[0171]

[0172] Table 1 above uses 4 second configuration information indicated by 4 arrangement orders of 4 symbol streams as an example for explanation. The 4 symbol streams may also have more arrangement orders and may also indicate more second configuration information, which are not listed one by one in Table 1.

[0173] Example 1: If synchronization signal 1 corresponds to symbol stream 1, synchronization signal 2 corresponds to symbol stream 2, synchronization sequence 3 corresponds to symbol stream 3, synchronization sequence 4 corresponds to symbol stream 4, synchronization signal 5 corresponds to symbol stream 1, synchronization signal 6 corresponds to symbol stream 2, synchronization sequence 7 corresponds to symbol stream 3, and synchronization sequence 8 corresponds to symbol stream 4, that is, the arrangement order of the symbol streams corresponding to the 8 synchronization signals is symbol stream 1, symbol stream 2, symbol stream 3, and symbol stream 4, and the arrangement order of the 4 symbol streams indicates the second configuration information #1 in Table 1 above; Example 2: If synchronization signal 1 corresponds to symbol stream 4, synchronization signal 2 corresponds to symbol stream 3, synchronization sequence 3 corresponds to symbol stream 2, synchronization sequence 4 corresponds to symbol stream 1, synchronization signal 5 corresponds to symbol stream 4, synchronization signal 6 corresponds to symbol stream 3, synchronization sequence 7 corresponds to symbol stream 2, and synchronization sequence 8 corresponds to symbol stream 1, that is, the arrangement order of the symbol streams corresponding to the 8 synchronization signals is symbol stream 4, symbol stream 3, symbol stream 2, and symbol stream 1, and the arrangement order of the 4 symbol streams indicates the second configuration information #2 in Table 1 above.

[0174] Correspondingly, the terminal device detects the above-mentioned at least one third frame based on the first configuration information. Specifically: the terminal device detects A synchronization signals based on the first configuration information; the terminal device determines a second configuration information based on the arrangement order of the symbol streams corresponding to the detected A synchronization signals; the terminal device receives the second signal based on the determined second configuration information.

[0175] Exemplarily, the terminal device determines, based on the detected 8 synchronization signals, that the arrangement order of the symbol streams corresponding to the 8 synchronization signals is symbol stream 1, symbol stream 2, symbol stream 3, and symbol stream 4, and the terminal device determines to use the second configuration information #1 to receive the second signal. Figure 5 As shown, the number of second signals configured by the second configuration information #1 is 2, the number of repeated transmissions of each second signal is 2, and after receiving 8 synchronization signals, the terminal device should receive second signal 1, second signal 1, second signal 2, and second signal 2 in sequence. Figure 5 The second signal 2 of the second repeated transmission is not shown.

[0176] Specifically, the at least one third frame is a frame configured by the first configuration information in S310 for carrying the second signal. The third frame may be a superframe, a system frame, a subframe, etc., which is not limited in the present application.

[0177] The transmission parameters of the second signal in the above-mentioned method 1 are implicitly indicated by the arrangement order of the symbol streams corresponding to the A synchronization signals, which can not only save the amount of information required for transmission, but also increase the flexibility of the transmission parameters of the second signal.

[0178] Method 2: The network device sends multiple fourth frames based on the first configuration information, the multiple fourth frames include a fifth frame and at least one sixth frame, the fifth frame includes B first synchronization signals and first control information, the B first synchronization signals are carried in the frame header part of the fifth frame, each frame in the at least one sixth frame includes C second synchronization signals and a second signal, the C second synchronization signals are carried in the frame header part of each sixth frame of at least one sixth frame, and the first control information is used to indicate the transmission parameters of the second signal included in the at least one sixth frame.

[0179] In mode 2, the first configuration information may further include at least one of the following:

[0180] The number of first synchronization signals included in the fifth frame, the association of the first synchronization signal with the control frame, the number of second synchronization signals included in each of at least one sixth frame, the association of the second synchronization signal with the data frame, the number of different symbol streams corresponding to C second synchronization signals, the different arrangement orders of the symbol streams corresponding to the C second synchronization signals indicating different positions of the data frame, the frame interval of multiple fourth frames, and the area range where the first synchronization signal and the second synchronization signal are allowed to be used.

[0181] Exemplarily, the above-mentioned different symbol streams refer to different bit sequences, and the above-mentioned different arrangement orders of the symbol streams refer to different arrangement orders of the bit sequences.

[0182] Specifically, the first control information included in the fifth frame is used to indicate a transmission parameter of the second signal included in at least one sixth frame. For example, the first control information is used to indicate at least one of the following:

[0183] The number of second signals, the number of times each second signal is repeatedly transmitted, the modulation and coding parameters used by each second signal, etc.

[0184] Specifically, the number of first synchronization signals included in the fifth frame configured by the first configuration information is B, the number of second synchronization signals included in each sixth frame of at least one sixth frame is C, the number of different symbol streams corresponding to the C second synchronization signals is C1, and different arrangement orders of the C1 symbol streams indicate different positions of the data frame. The area range where the first synchronization signal and the second synchronization signal are allowed to be used may be a cell level, a tracking area level, or a RAN notification area level, etc.

[0185] Specifically, the first synchronization signal configured by the first configuration information is associated with the control frame, and the second synchronization signal is associated with the data frame, which is specifically divided into two situations: In situation one, when B and C are not equal, the data frames and control frames can be distinguished by the different numbers of synchronization signals, or the control frames and data frames can be distinguished by different synchronization signals; In situation two, when B and C are equal, the control frames and data frames can be distinguished by different synchronization signals.

[0186] An example is Figure 6 As shown, Figure 6 The frame structure of the above situation 1 is shown. In the situation 1, B and C are not equal. Mode 2 is explained by taking B equal to 2, C equal to 4, and C1 equal to 2 as an example, but Mode 2 does not limit the specific values ​​of B, C, and C1, as long as B and C are not equal. The two first synchronization signals included in the fifth frame are respectively recorded as the first synchronization signal 1 and the first synchronization signal 2, and the number of different symbol streams corresponding to the two first synchronization signals included in the fifth frame is B1; when B is equal to 2, B1 is any positive integer less than or equal to 2. The four second synchronization signals included in each sixth frame of at least one sixth frame are respectively recorded as the second synchronization signal 1, the second synchronization signal 2, the second synchronization signal 3, and the second synchronization signal 4, and the two symbol streams corresponding to the four second synchronization signals are symbol stream 1 and symbol stream 2. For example, the bit sequence indicated by symbol stream 1 is 1100101, and the bit sequence indicated by symbol stream 2 is 1110010.

[0187] For example, in mode 2, the first configuration information may be indicated by the following Table 2:

[0188] Table 2

[0189]

[0190] Example 1: If the second synchronization signal 1 corresponds to symbol stream 1, the second synchronization signal 2 corresponds to symbol stream 2, the second synchronization sequence 3 corresponds to symbol stream 1, and the second synchronization sequence 4 corresponds to symbol stream 2, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is symbol stream 1 and symbol stream 2, the arrangement order of the two symbol streams indicates the first sixth frame in at least one sixth frame; Example 2: If the second synchronization signal 1 corresponds to symbol stream 2, the second synchronization signal 2 corresponds to symbol stream 1, the second synchronization sequence 3 corresponds to symbol stream 2, and the second synchronization sequence 4 corresponds to symbol stream 1, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is symbol stream 2 and symbol stream 1, the arrangement order of the two symbol streams indicates the second sixth frame in at least one sixth frame.

[0191] Correspondingly, the terminal device detects the above-mentioned multiple fourth frames based on the first configuration information. Specifically: the terminal device detects the fifth frame based on the first configuration information; the terminal device receives at least one second signal included in the sixth frame based on the first control information included in the fifth frame.

[0192] Exemplarily, the terminal device may determine that the current frame is a control frame based on the number of detected first synchronization signals, or the terminal device may determine that the current frame is a control frame based on the detected first synchronization signal, and then parse out the first control information included in the current frame, and receive the second signal included in at least one subsequent sixth frame based on the first control information. Figure 6 As shown, the first control information indicates that the number of second signals is 2, the number of repeated transmissions of each second signal is 1, and the terminal device receives the second signal 1 in the subsequent 1st sixth frame and receives the second signal 2 in the subsequent 2nd sixth frame.

[0193] Exemplarily, the terminal device may also determine the position of the current sixth frame in at least one sixth frame based on the arrangement order of the symbol streams corresponding to the C second synchronization signals included in any one of the at least one sixth frame. For example, the terminal device may determine that the current frame is a data frame based on the number of second synchronization signals detected, or the terminal device may determine that the current frame is a data frame based on the second synchronization signals detected; further, the terminal device determines that the current frame is the first data frame of two data frames based on the arrangement order of the symbol streams corresponding to the four detected second synchronization signals as symbol stream 1 and symbol stream 2; or, the terminal device determines that the current frame is the second data frame of two data frames based on the arrangement order of the symbol streams corresponding to the four detected second synchronization signals as symbol stream 2 and symbol stream 1.

[0194] Another example is Figure 7 As shown, Figure 7 The frame structure of the above-mentioned case 2 is shown. In case 2, B is equal to C, and mode 2 is explained by taking B equal to 4, C equal to 4, and C1 equal to 2 as an example, but mode 2 does not limit the specific values ​​of B, C, and C1. The four first synchronization signals included in the fifth frame are respectively recorded as first synchronization signal 1, first synchronization signal 2, first synchronization signal 3, and first synchronization signal 4, and the number of different symbol streams corresponding to the four first synchronization signals included in the fifth frame is B1; when B is equal to 4, B1 is any positive integer less than or equal to 4. The four second synchronization signals included in each sixth frame of at least one sixth frame are respectively recorded as second synchronization signal 1, second synchronization signal 2, second synchronization signal 3, and second synchronization signal 4, and the two symbol streams corresponding to the four second synchronization signals are symbol stream 1 and symbol stream 2. For example, the bit sequence indicated by symbol stream 1 is 1100101, and the bit sequence indicated by symbol stream 2 is 1110010.

[0195] For example, in mode 2, the first configuration information may also be indicated by the following Table 3:

[0196] Table 3

[0197]

[0198] Example 1: If the second synchronization signal 1 corresponds to symbol stream 1, the second synchronization signal 2 corresponds to symbol stream 2, the second synchronization sequence 3 corresponds to symbol stream 1, and the second synchronization sequence 4 corresponds to symbol stream 2, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is symbol stream 1 and symbol stream 2, the arrangement order of the two symbol streams indicates the first sixth frame in at least one sixth frame; Example 2: If the second synchronization signal 1 corresponds to symbol stream 2, the second synchronization signal 2 corresponds to symbol stream 1, the second synchronization sequence 3 corresponds to symbol stream 2, and the second synchronization sequence 4 corresponds to symbol stream 1, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is symbol stream 2 and symbol stream 1, the arrangement order of the two symbol streams indicates the second sixth frame in at least one sixth frame.

[0199] Correspondingly, the terminal device detects the above-mentioned multiple fourth frames based on the first configuration information. Specifically: the terminal device detects the fifth frame based on the first configuration information; the terminal device receives at least one second signal included in the sixth frame based on the first control information included in the fifth frame.

[0200] Exemplarily, the terminal device may determine that the current frame is a control frame based on the detected first synchronization signal, then parse out the first control information included in the current frame, and receive the second signal included in at least one subsequent sixth frame based on the first control information. Figure 7 As shown, the first control information indicates that the number of second signals is 2, the number of repeated transmissions of each second signal is 1, and the terminal device receives the second signal 1 in the subsequent 1st sixth frame and receives the second signal 2 in the subsequent 2nd sixth frame.

[0201] Exemplarily, the terminal device may also determine the position of the current sixth frame in at least one sixth frame based on the arrangement order of the symbol streams corresponding to the C second synchronization signals included in any one of the at least one sixth frame. For example, the terminal device may determine that the current frame is a data frame based on the detected second synchronization signal; further, the terminal device determines that the current frame is the first data frame of two data frames based on the arrangement order of the symbol streams corresponding to the detected four second synchronization signals as symbol stream 1 and symbol stream 2; or, the terminal device determines that the current frame is the second data frame of two data frames based on the arrangement order of the symbol streams corresponding to the detected four second synchronization signals as symbol stream 2 and symbol stream 1.

[0202] Specifically, the above-mentioned multiple fourth frames are frames configured by the first configuration information in the above-mentioned S310 for carrying the second signal. The fifth frame included in the multiple fourth frames and each sixth frame in at least one sixth frame can be a super frame, a system frame, a subframe, etc., and this application does not limit this.

[0203] In the above method 2, it is necessary to send a special first control information to indicate the transmission parameters of the second signal. The first control information can carry more information for scheduling the second signal, and can achieve more accurate scheduling of the second signal compared with the above method 1. In addition, the above method 2 can also determine the location of the data frame, which can reduce the difficulty of parsing the data frame.

[0204] Method 3: The network device sends at least one seventh frame based on the first configuration information, each of the at least one seventh frame includes second control information and a second signal, and the second control information is used to indicate the transmission parameters of the second signal of each of the at least one seventh frame.

[0205] Optionally, each seventh frame in the at least one seventh frame may further include D synchronization signals, and the D synchronization signals are carried in a frame header part of each seventh frame in the at least one seventh frame.

[0206] Specifically, the second control information is used to indicate at least one of the following:

[0207] The time domain resources and frequency domain resources of the second signal carried by each of at least one seventh frame, the signal type of the second signal carried by each of at least one seventh frame, the PLMN to which the second signal carried by each of at least one seventh frame belongs, the sending period of at least one seventh frame, the frame interval of at least one seventh frame, and the area range where the synchronization signal is allowed to be used.

[0208] Specifically, the signal type of the second signal carried by each seventh frame of at least one seventh frame indicated by the second control information can be identified by a logical channel identifier (LCID), for example, different seventh frames are used to transmit alarm information for different areas or alarm information for different services. Figure 8 As shown, the second signal 1 carried by the first seventh frame carries the identifier of the updated system message or public message, and the second signal 2 carried by the second seventh frame is used to carry the identifier of the terminal device that missed the paging, etc. The area range where the synchronization signal indicated by the second control information is allowed to be used can be the cell level, the tracking area level, or the RAN notification area level, etc.

[0209] Correspondingly, the terminal device detects at least one seventh frame based on the first configuration information. Specifically, the terminal device detects the second control information included in any seventh frame of at least one seventh frame based on the first configuration information; and the terminal device receives the second signal included in the current seventh frame based on the second control information.

[0210] In the above-mentioned mode 3, a control channel and a data channel may be added, and the control channel and the data channel may be distinguished by LCID. The control channel is used to transmit the second control information, and the data channel is used to transmit the second signal. Exemplarily, the control channel may be an alert control channel (ACCH), and the data channel may be an alert transport channel (ATCH).

[0211] Specifically, the at least one seventh frame is a frame configured by the first configuration information in the above S310 for carrying the second signal. The seventh frame may be a superframe, a system frame, a subframe, etc., which is not limited in the present application.

[0212] In the above-mentioned method 3, it is necessary to send special second control information to indicate the transmission parameters of the second signal. The second control information can carry more information for scheduling the second signal, and can achieve more accurate scheduling of the second signal compared with the above-mentioned method 1. In addition, the above-mentioned method 3 carries the second control information in each frame, and the analysis of each frame does not need to rely on other frames, so that each frame can be quickly analyzed.

[0213] Through the above method 300, the network device can distinguish the transmission resources of the first signal from the transmission resources of the second signal. When the communication link is extremely limited, the network device knows that the terminal device cannot receive the first signal on the first resource and sends the second signal to the terminal device on the second resource, thereby improving the success rate of the terminal device receiving the second signal.

[0214] The terminal device of the embodiment of the present application may be a terminal device in an idle state (RRC_IDLE), a deactivated state (also called RRC_INACTIVE), or a connected state (also called RRC_CONNECTED). Among them, the idle state (RRC_IDLE) and the deactivated state (also called RRC_INACTIVE) are usually referred to as "non-connected state". The following lists several scenarios in which the embodiments of the present application can be applied, but the scenarios in which the embodiments of the present application can be applied are not limited to these:

[0215] Example 1: if the terminal device is in an idle state, the first signal may be a paging signal, the second signal may indicate that the terminal device has missed a paging signal, or the second signal may indicate that the terminal device has been paged, etc.

[0216] Example 2, the embodiment of the present application can be used for beam management. If the terminal device is in a connected state, the terminal device detects beam failure detection (BFD) and attempts to search for candidate beams, and reports and recovers the beams through the physical random access channel (PRACH) corresponding to the candidate beams; if the terminal device does not search for candidate beams, the terminal device can start detection of the second signal. At this time, the second signal can carry at least one beam identifier (beam ID), and the terminal device can determine at least one candidate beam based on the detected second signal, and adjust the beam parameters accordingly (for example, adjust the quasi-co-location (QCL) relationship, etc.), thereby improving the efficiency of subsequent beam recovery.

[0217] Example 3, the embodiments of the present application can also be used for cell reselection. When a terminal device in a non-connected state fails in cell measurement or cell reselection, the terminal device can start detecting the second signal. At this time, the second signal can carry neighboring cell parameters, which include neighboring cell identifier (cell ID), tracking area identifier (tracking area ID), RAN identifier (RAN ID), neighboring cell frequency, etc. The terminal device in a non-connected state can determine that the cell identifier has changed based on the detected second signal, and can load the previously received neighboring cell system message to complete the cell reselection. The neighboring cell system message can be obtained through the source cell broadcast or based on the terminal device request.

[0218] In addition, the second signal of the embodiment of the present application can also be used to transmit alarm information, public safety information, mobility management information, etc., which is not limited in the present application.

[0219] It should be understood that the sequence numbers of the above processes do not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0220] It should also be understood that in some of the above embodiments, the devices in the existing network architecture are mainly used as examples for exemplary description, and it should be understood that the embodiments of the present application do not limit the specific form of the devices. For example, devices that can achieve the same function in the future are applicable to the embodiments of the present application.

[0221] It can be understood that in the above-mentioned various method embodiments, the methods and operations implemented by devices (such as the above-mentioned terminal devices, network devices, etc.) can also be implemented by components of the devices (such as chips or circuits).

[0222] Above, combined Figures 1 to 8 The method provided by the embodiment of the present application is described in detail. The above method is mainly introduced from the perspective of interaction between the terminal device and the network device. It can be understood that the terminal device and the network device, in order to realize the above functions, include hardware structures and / or software modules corresponding to the execution of each function.

[0223] Those skilled in the art should be aware that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0224] The following, combined Figures 9 to 11 The communication device provided by the embodiment of the present application is described in detail. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, the content not described in detail can refer to the method embodiment above. For the sake of brevity, some contents are not repeated. The embodiment of the present application can divide the functional modules of the terminal device or network device according to the above method example. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic, which is only a logical function division, and there may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0225] The communication method provided by the present application is described in detail above. The communication device provided by the present application is described below. In one possible implementation, the device is used to implement the steps or processes corresponding to the terminal device in the above method embodiment. In another possible implementation, the device is used to implement the steps or processes corresponding to the network device in the above method embodiment.

[0226] Fig. 9 is a schematic block diagram of a communication device 10 provided in an embodiment of the present application. Fig. 9 As shown, the device 10 may include a communication unit 11 and a processing unit 12. The communication unit 11 may communicate with the outside, and the processing unit 12 is used for data processing. The communication unit 11 may also be called a communication interface or a transceiver unit.

[0227] In one possible design, the device 10 can implement steps or processes corresponding to those executed by the terminal device in the above method embodiment, wherein the processing unit 12 is used to execute processing-related operations of the terminal device in the above method embodiment, and the communication unit 11 is used to execute sending and receiving-related operations of the terminal device in the above method embodiment.

[0228] In another possible design, the device 10 can implement steps or processes corresponding to those executed by the network device in the above method embodiments, wherein the communication unit 11 is used to execute operations related to receiving and sending of the network device in the above method embodiments, and the processing unit 12 is used to execute operations related to processing of the network device in the above method embodiments.

[0229] It should be understood that the device 10 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 10 can be specifically a terminal device in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the terminal device in the above-mentioned method embodiment, or the device 10 can be specifically a network device in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the network device in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.

[0230] The apparatus 10 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the terminal device in the above-mentioned method, or the apparatus 10 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the network device in the above-mentioned method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the communication unit can be replaced by a transceiver (for example, the sending unit in the communication unit can be replaced by a transmitter, and the receiving unit in the communication unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.

[0231] In addition, the communication unit may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit. Fig. 9The device may be a terminal device or a network device in the aforementioned embodiment, or a chip or a chip system, such as a system on chip (SoC). The communication unit may be an input / output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

[0232] Fig.10 A schematic block diagram of a communication device 20 provided in an embodiment of the present application. The device 20 includes a processor 21 and a transceiver 22. The processor 21 and the transceiver 22 communicate with each other through an internal connection path, and the processor 21 is used to execute instructions to control the transceiver 22 to send signals and / or receive signals.

[0233] Optionally, the device 20 may further include a memory 23, which communicates with the processor 21 and the transceiver 22 through an internal connection path. The memory 23 is used to store instructions, and the processor 21 can execute the instructions stored in the memory 23. In one possible implementation, the device 20 is used to implement the various processes and steps corresponding to the terminal device in the above method embodiment. In another possible implementation, the device 20 is used to implement the various processes and steps corresponding to the network device in the above method embodiment.

[0234] It should be understood that the device 20 can be specifically a terminal device or a network device in the above-mentioned embodiment, or a chip or a chip system. Correspondingly, the transceiver 22 can be a transceiver circuit of the chip, which is not limited here. Specifically, the device 20 can be used to execute the various steps and / or processes corresponding to the terminal device or the network device in the above-mentioned method embodiment. Optionally, the memory 23 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A part of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type. The processor 21 can be used to execute instructions stored in the memory, and when the processor 21 executes instructions stored in the memory, the processor 21 is used to execute the various steps and / or processes of the above-mentioned method embodiment corresponding to the terminal device or the network device.

[0235] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0236] It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The processor in the embodiment of the present application can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined and performed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0237] It can be understood that the memory in the embodiments of the present application 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 read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0238] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor. It should also be noted that the memory described herein is intended to include but is not limited to these and any other suitable types of memory.

[0239] Fig.11 3 is a schematic diagram of a chip system 30 provided in an embodiment of the present application. The chip system 30 (or also referred to as a processing system) includes a logic circuit 31 and an input / output interface 32.

[0240] Among them, the logic circuit 31 can be a processing circuit in the chip system 30. The logic circuit 31 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 30 can implement the method and function of the embodiment of the present application. The input / output interface 32 can be an input / output circuit in the chip system 30, outputting information processed by the chip system 30, or inputting data or signaling to be processed into the chip system 30 for processing.

[0241] Specifically, for example, if the terminal device is installed with the chip system 30, the logic circuit 31 is coupled to the input / output interface 32, and the logic circuit 31 can detect the second signal through the input / output interface 32. For another example, if the network device is installed with the chip system 30, the logic circuit 31 is coupled to the input / output interface 32, and the logic circuit 31 can send the first signal or send the second signal through the input / output interface 32, and the first signal or the second signal can be generated by the logic circuit 31.

[0242] As a solution, the chip system 30 is used to implement the operations performed by the terminal device in the above method embodiment.

[0243] For example, the logic circuit 31 is used to implement the processing-related operations performed by the terminal device in the above method embodiment, such as: Figure 3 The processing-related operations performed by the terminal device in the illustrated embodiment; the input / output interface 32 is used to implement the sending and / or receiving-related operations performed by the terminal device in the above method embodiment, such as, Figure 3 The terminal device in the illustrated embodiment performs operations related to sending and / or receiving.

[0244] As another solution, the chip system 30 is used to implement the operations performed by the network device in the above method embodiment.

[0245] For example, the logic circuit 31 is used to implement the processing-related operations performed by the network device in the above method embodiment, such as: Figure 3 The network device in the embodiment shown performs processing-related operations; the input / output interface 32 is used to implement the sending and / or receiving-related operations performed by the network device in the above method embodiment, such as, Figure 3 The network devices in the illustrated embodiment perform processing-related operations.

[0246] In addition, the present application also provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions are executed on a computer, the operations and / or processes performed by a terminal device or a network device in each method embodiment of the present application are executed.

[0247] The present application also provides a computer program product, which includes computer program code or instructions. When the computer program code or instructions are run on a computer, the operations and / or processes performed by a terminal device or a network device in each method embodiment of the present application are executed.

[0248] In addition, the present application also provides a communication system, including the terminal device and network device in the embodiments of the present application.

[0249] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0250] It can be appreciated by a person skilled in the art that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in combination with computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application. It can be clearly understood by a person skilled in the art that for the convenience and simplicity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the unit is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0251] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0252] It should be understood that the "embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments in the entire specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0253] It should also be understood that the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects. For example, the first message and the second message do not indicate the difference in information size, content, priority or importance.

[0254] It should also be understood that in the present application, "when", "if" and "if" all mean that the network element will take corresponding actions under certain objective circumstances, and do not limit the time, nor do they require the network element to have a judgment action when implementing it, nor do they mean that there are other limitations.

[0255] It should also be understood that in this application, "at least one" means one or more, and "more than one" means two or more. "At least one item" or similar expressions means one or more items, that is, any combination of these items, including any combination of single items or plural items. For example, at least one item of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c.

[0256] It should also be understood that the meaning of expressions similar to "the project includes one or more of the following: A, B, and C" in this application, unless otherwise specified, generally means that the project can be any of the following: A; B; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C, A, B and B; A, C and C; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C. The above is an example of three elements, A, B and C, to illustrate the optional items of the project. When it is expressed as "the project includes at least one of the following: A, B, ..., and X", that is, when there are more elements in the expression, the items that can be applied to the project can also be obtained according to the above rules.

[0257] It should also be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0258] It should also be understood that in each embodiment of the present application, "A corresponds to B" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0259] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: The method comprises: Not detecting a first signal using the first resource; A second signal is detected based on first configuration information, where the first configuration information is used to configure transmission of the second signal on a second resource, and the second signal is sent by the network device when the network device does not receive response information to the first signal from the terminal device.

2. The method according to claim 1, characterized in that The first configuration information includes at least one of the following: The period for transmitting the second signal, the time domain offset for transmitting the second signal in each period, and the frame carrying the second signal.

3. The method according to claim 2, characterized in that If the frame carrying the second signal is a first frame, the first frame includes Q second frames, and the first configuration information further includes first indication information, where the first indication information is used to indicate at least one second frame among the Q second frames that is used to carry the second signal, Wherein, Q is a positive integer.

4. The method according to any one of claims 1 to 3, characterized in that The detecting the second signal based on the first configuration information includes: At least one third frame is detected based on the first configuration information, and the at least one third frame includes A synchronization signals and the second signal. The A synchronization signals are carried in the frame header part of the first third frame in the at least one third frame, and A is a positive integer.

5. The method according to claim 4, characterized in that The first configuration information also includes at least one of the following: the number of synchronization signals included in the at least one third frame, the number of different symbol streams corresponding to the A synchronization signals included in the at least one third frame, different arrangement orders of the symbol streams corresponding to the A synchronization signals indicating different second configuration information, the frame interval of the at least one third frame, and the area range where the synchronization signal is allowed to be used, The second configuration information is used to indicate transmission parameters of the second signal.

6. The method according to claim 5, characterized in that The second configuration information includes at least one of the following: The number of the second signals, the number of times each of the second signals is repeatedly transmitted, and the modulation and coding parameters used by each of the second signals.

7. The method according to claim 5 or 6, characterized in that: The detecting at least one third frame based on the first configuration information comprises: Detecting the A synchronization signals based on the first configuration information; Determine a second configuration information based on the arrangement order of the symbol streams corresponding to the detected A synchronization signals; The second signal is received based on the determined second configuration information.

8. The method according to any one of claims 1 to 3, characterized in that The detecting the second signal based on the first configuration information includes: Based on the first configuration information, multiple fourth frames are detected, the multiple fourth frames include a fifth frame and at least one sixth frame, the fifth frame includes B first synchronization signals and first control information, the B first synchronization signals are carried on the frame header part of the fifth frame, each frame in the at least one sixth frame includes C second synchronization signals and the second signal, the C second synchronization signals are carried on the frame header part of each sixth frame in the at least one sixth frame, the first control information is used to indicate the transmission parameters of the second signal included in the at least one sixth frame, and B and C are positive integers.

9. The method according to claim 8, characterized in that The arrangement order of the symbol streams corresponding to the C second synchronization signals included in each sixth frame of the at least one sixth frame is different.

10. The method according to claim 8 or 9, characterized in that: The first configuration information also includes at least one of the following: the number of first synchronization signals included in the fifth frame, the association of the first synchronization signal with the control frame, the number of second synchronization signals included in each of the at least one sixth frame, the association of the second synchronization signal with the data frame, the number of different symbol streams corresponding to the C second synchronization signals, different arrangement orders of the symbol streams corresponding to the C second synchronization signals indicating different positions of the data frame, the frame interval of the plurality of fourth frames, and the area range where the first synchronization signal and the second synchronization signal are allowed to be used, The control frame is used to carry first control information indicating a transmission parameter of the second signal, and the data frame is used to carry the second signal.

11. The method according to any one of claims 8 to 10, characterized in that The first control information is used to indicate at least one of the following: The number of the second signals, the number of times each of the second signals is repeatedly transmitted, and the modulation and coding parameters used by each of the second signals.

12. The method according to any one of claims 8 to 11, characterized in that The detecting a plurality of fourth frames based on the first configuration information comprises: detecting the fifth frame based on the first configuration information; The second signal included in the at least one sixth frame is received based on the first control information included in the fifth frame.

13. The method according to any one of claims 8 to 12, characterized in that The method further comprises: The position of the current sixth frame in the at least one sixth frame is determined based on the arrangement order of the symbol streams corresponding to the C second synchronization signals included in any one sixth frame in the at least one sixth frame.

14. The method according to any one of claims 1 to 3, characterized in that The detecting the second signal based on the first configuration information includes: At least one seventh frame is detected based on the first configuration information, each of the at least one seventh frame includes second control information and the second signal, and the second control information is used to indicate a transmission parameter of the second signal of each of the at least one seventh frame.

15. The method according to claim 14, characterized in that The second control information is used to indicate at least one of the following: The time domain resources and frequency domain resources of each of the at least one seventh frame carrying the second signal, the signal type of the second signal carried by each of the at least one seventh frame, the public land mobile network PLMN to which the second signal carried by each of the at least one seventh frame belongs, the sending period of the at least one seventh frame, the frame interval of the at least one seventh frame, and the area range where the synchronization signal is allowed to be used.

16. The method according to claim 14 or 15, characterized in that Each seventh frame in the at least one seventh frame further includes D synchronization signals, and the D synchronization signals are carried in the frame header part of each seventh frame in the at least one seventh frame, where D is a positive integer.

17. The method according to any one of claims 14 to 16, characterized in that The detecting at least one seventh frame based on the first configuration information comprises: Detecting second control information included in any one of the at least one seventh frame based on the first configuration information; The second signal included in the current seventh frame is received based on the detected second control information.

18. The method according to any one of claims 1 to 17, characterized in that The first configuration information is carried in a system message.

19. A communication method, characterized in that: The method comprises: Sending a first signal using a first resource; No response information of the first signal from the terminal device is received; A second signal is sent based on first configuration information, where the first configuration information is used to configure transmission of the second signal on a second resource.

20. The method according to claim 19, characterized in that The first configuration information includes at least one of the following: The period for transmitting the second signal, the time domain offset for transmitting the second signal in each period, and the frame carrying the second signal.

21. The method according to claim 20, characterized in that If the frame carrying the second signal is a first frame, the first frame includes Q second frames, and the first configuration information further includes first indication information, where the first indication information is used to indicate at least one second frame among the Q second frames that is used to carry the second signal, Wherein, Q is a positive integer.

22. The method according to any one of claims 19 to 21, characterized in that The sending the second signal based on the first configuration information includes: At least one third frame is sent based on the first configuration information, the at least one third frame includes A synchronization signals and the second signal, the A synchronization signals are carried in the frame header part of the first third frame in the at least one third frame, and A is a positive integer.

23. The method according to claim 22, characterized in that The first configuration information also includes at least one of the following: the number of synchronization signals included in the at least one third frame, the number of different symbol streams corresponding to the A synchronization signals included in the at least one third frame, different arrangement orders of the symbol streams corresponding to the A synchronization signals indicating different second configuration information, the frame interval of the at least one third frame, and the area range where the synchronization signal is allowed to be used, The second configuration information is used to indicate transmission parameters of the second signal.

24. The method according to claim 23, characterized in that The second configuration information includes at least one of the following: The number of the second signals, the number of times each of the second signals is repeatedly transmitted, and the modulation and coding parameters used by each of the second signals.

25. The method according to any one of claims 19 to 21, characterized in that The sending the second signal based on the first configuration information includes: Based on the first configuration information, multiple fourth frames are sent, the multiple fourth frames include a fifth frame and at least one sixth frame, the fifth frame includes B first synchronization signals and first control information, the B first synchronization signals are carried on the frame header part of the fifth frame, each frame in the at least one sixth frame includes C second synchronization signals and the second signal, the C second synchronization signals are carried on the frame header part of each sixth frame in the at least one sixth frame, the first control information is used to indicate the transmission parameters of the second signal included in the at least one sixth frame, and B and C are positive integers.

26. The method according to claim 25, characterized in that The arrangement order of the symbol streams corresponding to the C second synchronization signals included in each sixth frame of the at least one sixth frame is different.

27. The method according to claim 25 or 26, characterized in that The first configuration information also includes at least one of the following: the number of first synchronization signals included in the fifth frame, the association of the first synchronization signal with the control frame, the number of second synchronization signals included in each of the at least one sixth frame, the association of the second synchronization signal with the data frame, the number of different symbol streams corresponding to the C second synchronization signals, different arrangement orders of the symbol streams corresponding to the C second synchronization signals indicating different positions of the data frame, the frame interval of the plurality of fourth frames, and the area range where the first synchronization signal and the second synchronization signal are allowed to be used, The control frame is used to carry first control information indicating a transmission parameter of the second signal, and the data frame is used to carry the second signal.

28. The method according to any one of claims 25 to 27, characterized in that The first control information is used to indicate at least one of the following: The number of the second signals, the number of times each of the second signals is repeatedly transmitted, and the modulation and coding parameters used by each of the second signals.

29. The method according to any one of claims 19 to 21, characterized in that The sending the second signal based on the first configuration information includes: At least one seventh frame is sent based on the first configuration information, each of the at least one seventh frame includes second control information and the second signal, and the second control information is used to indicate a transmission parameter of the second signal of each of the at least one seventh frame.

30. The method according to claim 29, characterized in that The second control information is used to indicate at least one of the following: The time domain resources and frequency domain resources of each of the at least one seventh frame carrying the second signal, the signal type of the second signal carried by each of the at least one seventh frame, the public land mobile network PLMN to which the second signal carried by each of the at least one seventh frame belongs, the sending period of the at least one seventh frame, the frame interval of the at least one seventh frame, and the area range where the synchronization signal is allowed to be used.

31. The method according to claim 29 or 30, characterized in that Each seventh frame in the at least one seventh frame further includes D synchronization signals, and the D synchronization signals are carried in the frame header part of each seventh frame in the at least one seventh frame, where D is a positive integer.

32. The method according to any one of claims 19 to 31, characterized in that The first configuration information is carried in a system message.

33. A communication device, characterized in that: The method comprises modules or units for executing the method according to any one of claims 1 to 32.

34. A communication device, characterized in that: include: A processor, configured to execute computer instructions stored in a memory, so that the device performs the communication method as claimed in any one of claims 1 to 18, or so that the device performs the communication method as claimed in any one of claims 19 to 32.

35. A communication device, characterized in that: The device includes a logic circuit and an input / output interface, wherein the logic circuit is used to couple with the input / output interface and transmit data through the input / output interface to execute the communication method as described in any one of claims 1 to 18, or to execute the communication method as described in any one of claims 19 to 32.

36. A computer-readable storage medium, characterized in that: Computer instructions are stored therein, and when the computer instructions are executed on a computer, the communication method according to any one of claims 1 to 18 is executed, or the communication method according to any one of claims 19 to 32 is executed.

37. A chip, characterized in that: The chip includes a processor and a communication interface, and the processor reads instructions stored in a memory through the communication interface to execute the communication method as described in any one of claims 1 to 18, or executes the communication method as described in any one of claims 19 to 32.

Images