Communication method and communication apparatus

Abstract

Provided in the present application are a communication method and a communication apparatus. In the method, if a network device sends a first signal by using a first resource but has not received response information of the first signal that is fed back by a terminal device, the terminal device may not have detected the first signal, and the network device can continue to send a second signal by using a configured second resource. The second signal may function as an alarm, for example, the second signal may indicate that the terminal device has been paged, or the second signal may indicate that the terminal device has missed the detection of the first signal. By means of the method in the embodiments of the present application, a network device can distinguish between a transmission resource for a conventional first signal and a transmission resource for a second signal used for an alarm. When a communication link is extremely limited, a terminal device can initiate the detection of the second signal on the second resource when the first resource fails to detect the first signal, to detect the second signal on the second resource, thereby improving a success rate of receiving an alarm signal by means of the terminal device.

Description

Communication method and communication apparatus

[0001] This application claims priority from the Chinese patent application No. 202411095285.1 filed on August 9, 2024, and entitled "Communication method and communication apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and more particularly, to a communication method and a communication apparatus. BACKGROUND

[0003] In a non terrestrial network (NTN) communication scenario, when a terminal device does not transmit or receive data, it usually enters an idle state to save power consumption; when a network device has user data arriving, it will wake up the terminal device in the idle state through paging to conduct data transmission. However, the terminal device may be unable to receive the paging signal sent by the satellite due to limited communication link, being blocked by an obstacle, etc., which affects the communication quality between the terminal device and the satellite. SUMMARY

[0004] The present application provides a communication method and a communication apparatus, which can improve the success rate of the terminal device detecting the alarm signal.

[0005] In a 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 can be executed by the component (such as a chip or a chip system or a circuit or a communication module) of the terminal device, which is not limited in the present application. Hereinafter, the terminal device will be mainly taken as an example for description.

[0006] The method can include: the terminal device does not detect a first signal using a first resource; and the terminal device detects a second signal based on first configuration information, the first configuration information being used to configure transmission of the second signal on a second resource, the second signal being sent by a network device when a response information of the first signal from the terminal device is not received.

[0007] Exemplarily, the second signal can be used to indicate that the terminal device is paged, or the second signal can be used to indicate that the terminal device misses the first signal, etc., which is not limited in the present application.

[0008] Through the above method, the network device can distinguish the transmission resource of the conventional first signal from the transmission resource of the second signal for alarm. In the case that the communication link is extremely limited, the terminal device can start to detect the second signal on the second resource in the case that the first signal cannot be detected on the first resource, so as to improve the success rate of the terminal device receiving the alarm signal.

[0009] With reference to the first aspect, in some implementations of the first aspect, the first configuration information includes at least one of the following:

[0010] a period in which the second signal is transmitted, a time domain offset in each period in which the second signal is transmitted, a frame carrying the second signal, or the like.

[0011] For example, the period in which the second signal is transmitted, the time domain offset in each period in which the second signal is transmitted, or the like can be a superframe, a system frame, or a subframe, and the like, which is not limited in the present application. Correspondingly, the frame carrying the second signal can also be a superframe, a system frame, a subframe, or the like.

[0012] Through the above method, the network device can periodically configure the frame carrying the second signal, and other frames except the frame carrying the second signal in each period can be used to transmit other signals, thereby reducing the occupation of resources.

[0013] With reference to the first aspect, in some 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 first configuration information further includes first indication information, the first indication information being used to indicate at least one second frame in the Q second frames for carrying the second signal, Q being a positive integer.

[0014] For example, the first frame can be a superframe, and the second frame can be a system frame or a subframe; or the first frame can be a system frame, and the second frame can be a subframe.

[0015] Through the above method, a part of resources in the periodically configured frame carrying the second signal can be used to transmit the second signal, and another part of resources in the frame carrying the second signal can also be used to transmit other signals, thereby further reducing the occupation of resources.

[0016] With reference to the first aspect, in some implementations of the first aspect, the terminal device detects the second signal based on the first configuration information, and the detection includes: the terminal device detects, based on the first configuration information, at least one third frame, the at least one third frame including A synchronization signals and the second signal, the A synchronization signals being carried in a frame header part of a first third frame in the at least one third frame, A being a positive integer.

[0017] Specifically, the first configuration information further includes at least one of the following:

[0018] a number of synchronization signals included in the at least one third frame, a number of different symbol streams corresponding to the A synchronization signals included in the at least one third frame, different arrangement orders of symbol streams corresponding to the A synchronization signals indicating different second configuration information, a frame interval of the at least one third frame, a range of a region allowed to be used by the synchronization signal, or the like, the second configuration information being used to indicate a transmission parameter of the second signal.

[0019] Exemplarily, the second configuration information includes at least one of the following:

[0020] a number of the second signals, a number of repetitions of each of the second signals, a modulation and coding parameter used by each of the second signals, and the like.

[0021] By the above method, a frame structure for carrying the second signals is provided, in which the number of repetitions of the second signals can be increased, and the success rate of detecting the second signals by the terminal device is improved. In addition, the above method can implicitly carry the transmission parameters of the second signals through the synchronization signals, and the amount of information required for transmission can be reduced.

[0022] With reference to the first aspect, in some implementations of the first aspect, the 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 determines a second configuration information based on the arrangement order of the symbol streams corresponding to the A synchronization signals; and the terminal device receives the second signals based on the determined second configuration information.

[0023] Exemplarily, the number of different symbol streams corresponding to the A synchronization signals is A1, and the A1 symbol streams can form a plurality of arrangement orders, and the plurality of arrangement orders can indicate a plurality of second configuration information.

[0024] By the above method, the transmission parameters of the second signals can be adjusted through the arrangement order of the symbol streams corresponding to the A synchronization signals, without updating the messages, which not only reduces the signaling overhead, but also increases the flexibility of the transmission parameters of the second signals.

[0025] With reference to the first aspect, in some implementations of the first aspect, the terminal device detects the second signals based on the first configuration information, including: the terminal device detects a plurality of fourth frames based on the first configuration information, the plurality of fourth frames including a fifth frame and at least one sixth frame, the fifth frame including B first synchronization signals and first control information, the B first synchronization signals being carried in a frame header part of the fifth frame, and each of the at least one sixth frame including C second synchronization signals and the second signals, the C second synchronization signals being carried in a frame header part of each of the at least one sixth frame, the first control information being used to indicate the transmission parameters of the second signals included in the at least one sixth frame, B and C being positive integers.

[0026] Exemplarily, the first control information is used to indicate at least one of the following:

[0027] a number of the second signals, a number of repetitions of each of the second signals, a modulation and coding parameter used by each of the second signals, and the like.

[0028] By the above method, another frame structure for carrying the second signal is provided, which separately carries the first control information for controlling the second signal transmission and the second signal in different frames, and the frame structure can carry more control information for controlling the second signal transmission, realizes more accurate scheduling of the second signal, and improves the success rate of the terminal device detecting the second signal.

[0029] In combination with the first aspect, in some implementations of the first aspect, each of the at least one sixth frame includes C second synchronization signals corresponding to different arrangement sequences of symbol streams.

[0030] Specifically, the first configuration information can further include at least one of the following:

[0031] The number of the first synchronization signals included in the fifth frame, the association of the first synchronization signals with the control frame, the number of the second synchronization signals included in each of the at least one sixth frame, the association of the second synchronization signals with the data frame, the number of different symbol streams corresponding to the C second synchronization signals, the indication of different positions of the data frame by different arrangement sequences of the symbol streams corresponding to the C second synchronization signals, the frame interval of the plurality of fourth frames, the range of the area allowed to be used by the first synchronization signals and the second synchronization signals, and the like.

[0032] Exemplarily, the number of different symbol streams corresponding to the C second synchronization signals is C1, and the C1 symbol streams can constitute a plurality of arrangement sequences, and the plurality of arrangement sequences can indicate the positions of the plurality of data frames.

[0033] By the above method, the control frame and the data frame can be distinguished by different synchronization signals, and the position of the current data frame can be indicated by the arrangement sequence of the symbol streams corresponding to the C second synchronization signals in the data frame, so that the difficulty of analyzing the current data frame can be reduced.

[0034] In combination with the first aspect, in some implementations of the first aspect, the terminal device detects the plurality of fourth frames based on the first configuration information, including: the terminal device detects the fifth frame based on the first configuration information; and the terminal device receives the second signal included in the at least one sixth frame based on the first control information included in the fifth frame.

[0035] Specifically, the terminal device detects the fifth frame based on the first configuration information, and determines that the fifth frame is a control frame according to the B first synchronization signals included in the fifth frame; the terminal device analyzes the first control information included in the fifth frame, and receives the second signal included in the at least one sixth frame according to the first control information.

[0036] By the above method, the terminal device can distinguish the control frame and the data frame, and accurately receive the second signal.

[0037] With reference to the first aspect, in some implementations of the first aspect, the method further includes determining, by the terminal device, a position of the current sixth frame in the at least one sixth frame based on an arrangement order of symbol streams corresponding to the C second synchronization signals included in any one of the at least one sixth frame.

[0038] By the above method, in a case where the terminal device does not receive the control frame, the terminal device can identify the position of the current data frame in all data frames, determine a time required for waiting for receiving the next control frame, and parse the current data frame based on the next received control frame, thereby achieving successful parsing of the current data frame.

[0039] With reference to the first aspect, in some implementations of the first aspect, the terminal device detecting the second signal based on the first configuration information includes: the terminal device detecting, based on the first configuration information, at least one seventh frame, each of the at least one seventh frame including the second control information and the second signal, the second control information being used to indicate a transmission parameter of the second signal of each of the at least one seventh frame.

[0040] For example, the second control information is used to indicate at least one of the following:

[0041] Each of the at least one seventh frame carries time domain resources and frequency domain resources of the second signal, a type of the second signal carried by each of the at least one seventh frame, a public land mobile network (PLMN) to which the second signal carried by each of the at least one seventh frame belongs, a transmission period of the at least one seventh frame, a range of an area in which a synchronization signal is allowed to be used, and the like.

[0042] By the above method, another frame structure for carrying the second signal is provided, which carries the first control information for controlling 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 depend on other frames, thereby achieving fast parsing of the second signal.

[0043] With reference to the first aspect, in some implementations of the first aspect, each of the at least one seventh frame can further include D synchronization signals, the D synchronization signals being carried in a frame header part of each of the at least one seventh frame, D being a positive integer.

[0044] By the above method, frame synchronization can be achieved, and accurate reception of the second signal can be achieved.

[0045] In some implementations of the first aspect, the terminal device detects at least one seventh frame based on the first configuration information, including: the terminal device detects second control information included in any one of the 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 detected second control information.

[0046] Through the above method, the terminal device can quickly obtain the information carried by the second signal.

[0047] In some implementations of the first aspect, the first configuration information can be carried in a system message.

[0048] By carrying the first configuration information in the system message, the time length for the terminal device to detect the signal can be reduced, and the power consumption of the terminal device can be saved.

[0049] In a 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 can be executed by a component (for example, a chip or a chip system or a circuit or a communication module) of the network device, and the present application does not limit this. Hereinafter, the network device will be mainly taken as an example for description.

[0050] The method can include: the network device transmits a first signal using a first resource; the network device does not receive response information of the first signal from a terminal device; and the network device transmits a second signal based on first configuration information, the first configuration information being used to configure transmission of the second signal on a second resource.

[0051] Exemplarily, the second signal can be used to indicate that the terminal device is paged, or the second signal can be used to indicate that the terminal device misses the first signal, and the present application does not limit this.

[0052] Through the above method, the network device can distinguish the transmission resource of the conventional first signal from the transmission resource of the second signal used for alarming. In the case that the communication link is extremely limited, the network device transmits the second signal to the terminal device on the second resource in the case that the terminal device cannot receive the first signal on the first resource, so as to improve the success rate of the terminal device receiving the alarming signal.

[0053] In some implementations of the second aspect, the first configuration information includes at least one of the following:

[0054] The period of transmitting the second signal, the time domain offset of transmitting the second signal in each period, the frame carrying the second signal, and the like.

[0055] Exemplarily, the period in which the second signal is transmitted, the measurement granularity of the time domain offset in which the second signal is transmitted in each period can be a superframe, a system frame, or a subframe, etc., and the present application does not limit this. Correspondingly, the frame carrying the second signal can also be a superframe, a system frame, a subframe, etc.

[0056] Through the above method, the network device can periodically configure the frame carrying the second signal, and other frames in each period except the frame carrying the second signal can be used to transmit other signals, thereby reducing the occupation of resources.

[0057] In combination with the second aspect, in some 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 first configuration information further includes first indication information, the first indication information being used to indicate at least one second frame in the Q second frames for carrying the second signal, and Q is a positive integer.

[0058] Exemplarily, the first frame can be a superframe, and the second frame can be a system frame or a subframe; or the first frame can be a system frame, and the second frame can be a subframe.

[0059] Through the above method, a part of resources in the periodically configured frame carrying the second signal can be used to transmit the second signal, and another part of resources in the frame carrying the second signal can also be used to transmit other signals, thereby further reducing the occupation of resources.

[0060] In combination with the second aspect, in some implementations of the second aspect, the network device sends the 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 including A synchronization signals and the second signal, the A synchronization signals being carried in a frame header part of a first third frame in the at least one third frame, and A being a positive integer.

[0061] Specifically, the first configuration information further includes at least one of the following:

[0062] 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, the range of the area allowed to be used by the synchronization signal, etc., the second configuration information being used to indicate the transmission parameter of the second signal.

[0063] Exemplarily, the second configuration information includes at least one of the following:

[0064] The number of the second signals, the number of times of repeated transmission of each second signal, the modulation and coding parameters used by each second signal, etc.

[0065] By 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, and the success rate of the terminal device detecting the second signal is improved. In addition, the above method can implicitly carry the transmission parameters of the second signal through the synchronization signal, and the amount of information required for transmission can be reduced.

[0066] In combination with the second aspect, in some implementations of the second aspect, the network device sends the second signal based on the first configuration information, including: the network device sends a plurality of fourth frames based on the first configuration information, the plurality of fourth frames including a fifth frame and at least one sixth frame, the fifth frame including B first synchronization signals and first control information, the B first synchronization signals being carried in the frame header part of the fifth frame, each of the at least one sixth frame including C second synchronization signals and the second signal, the C second synchronization signals being carried in the frame header part of each of the at least one sixth frame, the first control information being used to indicate the transmission parameters of the second signal included in the at least one sixth frame, B and C being positive integers.

[0067] For example, the first control information is used to indicate at least one of the following:

[0068] The number of second signals, the number of repeated transmissions of each second signal, the modulation and coding parameters used by each second signal, etc.

[0069] By 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 carried in different frames respectively, and the frame structure can carry more control information for controlling the transmission of the second signal, so as to realize more accurate scheduling of the second signal and improve the success rate of the terminal device detecting the second signal.

[0070] In combination with the second aspect, in some implementations of the second aspect, the arrangement order of the C second synchronization signals corresponding to the symbol stream in each of the at least one sixth frame is different.

[0071] Specifically, the first configuration information can further include at least one of the following:

[0072] 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, the different arrangement order 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, the range of the area allowed to be used by the first synchronization signal and the second synchronization signal, etc.

[0073] Exemplarily, the number of different symbol streams corresponding to the C second synchronization signals is C1, and the C1 symbol streams can constitute a plurality of arrangement sequences, and the plurality of arrangement sequences can indicate positions of the plurality of data frames.

[0074] By the above method, the control frame and the data frame can be distinguished by different synchronization signals, and the position of the current data frame can be indicated by the arrangement sequence of the symbol streams corresponding to the C second synchronization signals in the data frame, and the difficulty of parsing the current data frame can be reduced.

[0075] With reference to the second aspect, in some implementations of the second aspect, the network device sends the second signal based on the first configuration information, and the method includes: the network device sends at least one seventh frame based on the first configuration information, each of the at least one seventh frame includes the second control information and the second signal, and the second control information is used to indicate a transmission parameter of the second signal in each of the at least one seventh frame.

[0076] Exemplarily, the second control information is used to indicate at least one of the following:

[0077] The time domain resource and the frequency domain resource of the second signal carried in each of the at least one seventh frame, the type of the second signal carried in each of the at least one seventh frame, the PLMN to which the second signal carried in each of the at least one seventh frame belongs, the transmission period of the at least one seventh frame, the range of the area allowed to be used by the synchronization signal, and the like.

[0078] By the above method, another frame structure for carrying the second signal is provided, and the first control information for controlling the transmission of the second signal is carried in the same frame as the second signal, so that the parsing of the second signal does not need to depend on other frames, thereby realizing the fast parsing of the second signal.

[0079] With reference to the second aspect, in some implementations of the second aspect, each of the at least one seventh frame can further include D synchronization signals, the D synchronization signals are carried in a frame header part of each of the at least one seventh frame, and D is a positive integer.

[0080] By the above method, frame synchronization can be realized, and the accurate reception of the second signal can be realized. With reference to the second aspect, in some implementations of the second aspect, the first configuration information can be carried in a system message.

[0081] By carrying the first configuration information in the system message, the time length of the terminal device for detecting the signal can be reduced, and the power consumption of the terminal device can be saved.

[0082] In a third aspect, a communication apparatus is provided. The apparatus is configured to perform the method in the first aspect above. Specifically, the apparatus can include a module configured to perform the method in the first aspect and any possible implementation of the first aspect.

[0083] In a fourth aspect, a communication apparatus is provided. The apparatus is configured to perform the method in the second aspect above. Specifically, the apparatus can include a module configured to perform the method in the second aspect and any possible implementation of the second aspect.

[0084] In a fifth aspect, a communication apparatus is provided. The apparatus includes a processor. The processor is coupled to a memory and is configured to execute instructions in the memory to implement the method in the first aspect above and any possible implementation of the first aspect. Optionally, the apparatus further includes the memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface.

[0085] In an implementation form, the apparatus is a terminal device. When the apparatus is a terminal device, the communication interface can be a transceiver, or an input / output interface.

[0086] In another implementation form, the apparatus is a chip configured in a terminal device. When the apparatus is a chip configured in a terminal device, the communication interface can be an input / output interface.

[0087] In another implementation form, the apparatus is a chip or a chip system.

[0088] Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0089] In a sixth aspect, a communication apparatus is provided. The apparatus includes a processor. The processor is coupled to a memory and is configured to execute instructions in the memory to implement the method in the second aspect above and any possible implementation of the second aspect. Optionally, the apparatus further includes the memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface.

[0090] In an implementation form, the apparatus is a network device. When the apparatus is a network device, the communication interface can be a transceiver, or an input / output interface.

[0091] In another implementation form, the apparatus is a chip configured in a network device. When the apparatus is a chip configured in a network device, the communication interface can be an input / output interface.

[0092] In another implementation form, the apparatus is a chip or a chip system.

[0093] Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0094] In a seventh aspect, a computer readable storage medium is provided, having stored thereon computer instructions, which when executed by an apparatus, cause the apparatus to implement the method in the first aspect and any possible implementation of the first aspect.

[0095] In an eighth aspect, a computer readable storage medium is provided, having stored thereon computer instructions, which when executed by an apparatus, cause the apparatus to implement the method in the second aspect and any possible implementation of the second aspect.

[0096] In a ninth aspect, a computer program product is provided, having stored thereon a computer program, which when executed by an apparatus, cause the apparatus to implement the method provided in the first aspect and any possible implementation of the first aspect.

[0097] In a tenth aspect, a computer program product is provided, having stored thereon a computer program, which when executed by an apparatus, cause the apparatus to implement the method provided in the second aspect and any possible implementation of the second aspect.

[0098] In an eleventh aspect, a communication system is provided, comprising a terminal device and a network device as described above. BRIEF DESCRIPTION OF DRAWINGS

[0099] FIG. 1 is a schematic diagram of a network architecture suitable for embodiments of the present application.

[0100] FIG. 2 is a schematic diagram of an architecture of a communication system suitable for embodiments of the present application.

[0101] FIG. 3 is a schematic flow chart of a communication method 300 according to an embodiment of the present application.

[0102] FIG. 4 is a schematic diagram of a frame configuration for carrying a second signal according to an embodiment of the present application.

[0103] FIG. 5 is a schematic diagram of a frame structure for carrying a second signal according to an embodiment of the present application.

[0104] FIG. 6 is a schematic diagram of another frame structure for carrying a second signal according to an embodiment of the present application.

[0105] FIG. 7 is a schematic diagram of yet another frame structure for carrying a second signal according to an embodiment of the present application.

[0106] FIG. 8 is a schematic diagram of still another frame structure for carrying a second signal according to an embodiment of the present application.

[0107] FIG. 9 is a schematic block diagram of a communication apparatus 10 according to an embodiment of the present application.

[0108] FIG. 10 is a schematic block diagram of another communication apparatus 20 according to an embodiment of the present application.

[0109] FIG. 11 is a schematic block diagram of a chip system 30 according to an embodiment of the present application. DETAILED DESCRIPTION

[0110] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0111] The technical solutions in the embodiments of the present application can be applied to various communication systems, for example, a long term evolution (LTE) system, a long term evolution-advanced (LTE-A) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunication system (UMTS) system, a worldwide interoperability for microwave access (WiMAX) communication system, a next generation communication system (for example, a fifth generation (5G) communication system), a fusion system or evolution system of multiple access systems, or a future communication system, etc. The present application is not limited thereto.

[0112] The technical solutions provided in the 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 network. The IoT network may, for example, include a vehicle network. In the vehicle network system, the communication mode is collectively referred to as vehicle to X (V2X, X can represent any thing), 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.

[0113] The network device in the embodiment of the application can also be referred to as a (radio) access network ((R)AN) device. The (R)AN device can manage radio resources, provide access services for user equipment, and complete forwarding of user equipment data between a terminal device and a core network. The (R)AN device can also be understood as a base station in the network, which is a device deployed in a radio access network to provide wireless communication functions for a mobile station (MS).

[0114] Exemplarily, the network device in the embodiments of the present application can be any kind of communication device with wireless transceiving function for communicating with the terminal device. The network device includes but is not limited to: a node B (NB), an evolved node B (eNB), a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a home evolved node B (HeNB) or a home node B (HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc., and can also be a next generation node B (gNB) or a transmission reception point (TRP) in a 5G system (such as a new radio (NR) system), or one or a group of (including multiple antenna panels) antenna panels of a base station in a 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 (DU), etc., and can also be various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, 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 virtualized functions instantiated on a platform (such as a cloud platform).

[0115] In some deployments, network devices in embodiments of the application can include a centralized unit (CU) and a DU. The network devices can also include an active antenna unit (AAU). The CU implements part of the functionality of the network device, and the DU implements part of the functionality of the network device. For example, the CU is responsible for processing non-real-time protocols and services, implementing the radio resource control (RRC), packet data convergence protocol (PDCP) layer functionality. The DU is responsible for processing the physical layer protocol and real-time services, implementing the radio link control (RLC) layer, medium access control (MAC) layer, and physical (PHY) layer functionality. The AAU implements part of the physical layer processing functionality, radio frequency processing, and related functionality of the active antenna. Information of the RRC layer is generated by the CU and eventually becomes PHY layer information through the encapsulation of the PHY layer of the DU, or is converted from the information of the PHY layer. Thus, under this architecture, high layer signaling such as RRC layer signaling can also be considered as being sent by the DU, or by the DU+AAU. It can be understood that the network device can be a device including one or more of the CU node, the DU node, and the AAU node. In addition, the CU can be divided into an access network device in the RAN, or the CU can be divided into an access network device in the core network (CN), and the application does not limit this.

[0116] The terminal device in the embodiments of the present application can also be referred to as a user equipment (UE), a terminal, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The terminal in the embodiments of the present application can be a mobile phone, a pad, 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) computer, a tablet computer, a laptop computer, an MTC terminal, a wireless modem, a handheld device with wireless communication function, a computing device, or other processing devices connected to the wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network, or a terminal in a future evolution network, etc. The terminal device in the embodiments of the present application can be fixed or mobile.

[0117] Among them, the wearable device can also be referred to as a wearable smart device, which is a general term for devices that can be designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes. The wearable device is a portable device that can be directly worn on the body or integrated into the user's clothes or accessories. The wearable device is not only a hardware device, but also a device that can realize powerful functions through software support and data interaction and cloud interaction. The general wearable smart device includes a device with full functions and large size, which can realize complete or partial functions without relying on a smart phone, such as a smart watch or smart glasses, and a device that focuses on a certain application function and needs to be used in cooperation with other devices such as a smart phone, such as various smart wristbands and smart jewelry for monitoring vital signs.

[0118] In the embodiments of the present application, the communication device for implementing the function of the network device can be a network device, a device with part of the function of the network device, or a device capable of supporting the network device to implement the function, such as a chip system, which can be installed in the network device. In the embodiments of the present application, the communication device for implementing the function of the terminal device can be a terminal device, a device with part of the function of the terminal device, or a device capable of supporting the terminal device to implement the function, such as a chip system, which can be installed in the terminal device.

[0119] In actual network deployment, the ground network cannot cover all areas, especially in areas with few people such as deserts, oceans, and the North and South Poles. The non-terrestrial network (NTN) has a wide coverage and is more likely to provide coverage in places with few people, and is suitable for deployment in areas with few people.

[0120] FIG. 1 is a schematic diagram of an example of an NTN architecture suitable for the embodiments of the present application. The ground terminal accesses the 5G new air interface network, and the 5G access network device 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 devices. The interfaces between the network elements in FIG. 1 and the network elements are described as follows:

[0121] Terminal device: a mobile device supporting the 5G new air interface, such as a typical mobile device such as a mobile phone and a pad. The terminal device can access the satellite network through the air interface and initiate a call, access the Internet, and other services. For details, refer to the description of the terminal device above.

[0122] 5G access network device: mainly providing wireless access services, scheduling wireless resources to access terminals, providing reliable wireless transmission protocols and data encryption protocols, etc.

[0123] 5G core network: user access control, mobility management, session management, user security authentication, charging, and other services. It is composed of multiple functional units and can be divided into control plane and data plane functional entities. The access and mobility management function (AMF) network element is responsible for user access management and control, user security authentication, and mobility management, etc. 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.

[0124] Ground station: responsible for forwarding signaling and service data between 5G access network equipment and 5G core network.

[0125] 5G New Radio: a wireless link between a terminal device and 5G access network equipment.

[0126] Xn interface: an interface between 5G access network equipment and 5G access network equipment, mainly used for signaling interaction such as handover.

[0127] NG interface: an interface between 5G access network equipment and 5G core network equipment, mainly interacting with non-access layer (NAS) signaling of the core network, and user service data.

[0128] Figure 2 is a schematic diagram of a communication system suitable for the NTN architecture of the embodiments of the present application. As shown in Figure 2, the communication system can include at least one network device, such as the satellite device shown in Figure 2; the communication system can also include at least one terminal device, such as the terminal device shown in Figure 2. The network device and the terminal device can communicate through a wireless link.

[0129] In the embodiments of the present application, the terminal device or the 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 central processing unit (CPU), memory management unit (MMU), memory (also known as main memory), and other hardware. The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system, etc. The application layer includes browsers, address books, word processing software, instant messaging software, etc. Moreover, the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application, as long as the execution subject can communicate according to the method provided by the embodiments of the present application by running a program in which the code of the method provided by the embodiments of the present application is recorded, for example, the execution subject of the method provided by the embodiments of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.

[0130] In addition, various aspects or features of the disclosure can be realized using one or more computer-program products, i.e., one or more modules of computer code. The term "computer-program product" is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to random-access memory (RAM), read-only memory (ROM), portable or fixed storage devices, optical storage devices, optical storage devices, various forms of computer-readable media, etc. Furthermore, it should be understood that various components described herein can be implemented, using a plurality of devices, and that each device can have several components. It is also within the scope of the present disclosure that one or more computer-program products are used to implement one or more components.

[0131] It should be understood that FIG. 2 is a simple illustration of one communication scenario to which the present disclosure can be applied, taking the network device and the terminal device as an example, and does not limit other scenarios to which the present disclosure can be applied. It should also be understood that FIG. 2 is a simplified schematic diagram for ease of understanding, and other network devices or other terminal devices can also be included in the communication system, which are not shown in FIG. 2.

[0132] It should be understood that the network device in the communication system can be any device with wireless transceiving function, and specific description can be made with reference to the description of the network device above, which will not be repeated here.

[0133] It should also be understood that only one network device and one terminal device are shown in FIG. 2, and 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 can need to reselect a satellite for access to communication.

[0134] FIGS. 1 and 2 introduce the NTN architecture and the communication system to which the embodiments of the present disclosure are applicable. In the NTN scenario, when the terminal device does not transmit or receive data, it usually enters an idle state (RRC_IDLE) to save power consumption; when the network device has user data arriving, it will wake up the terminal device in the idle state through paging to perform data transmission. However, the terminal device can not be able to receive the signal sent by the satellite due to limited communication link, being blocked by an obstacle, and the like, thereby causing the terminal device and the satellite to fail to communicate normally.

[0135] Based on the above technical problem, the present application provides a communication method 300, which can improve the success rate of the terminal device detecting the alarm signal by designing a sending mode of the alarm signal.

[0136] FIG. 3 is a schematic flow chart of a communication method 300 provided by an embodiment of the present application. In the embodiment, the network device and the terminal device are taken as the interactive execution subject to illustrate the method, but the present application is not limited to the interactive execution subject. For example, the network device in FIG. 3 can also be a chip, a chip system or a processor supporting the method that the network device can implement, and can also be a logic module or software capable of implementing all or part of the network device; the terminal device can also be a chip, a chip system or a processor supporting the method that the terminal device can implement, and can also be a logic module or software capable of implementing all or part of the terminal device.

[0137] The communication method 300 can include the following steps:

[0138] S310, the network device sends a first signal using a first resource. Correspondingly, the terminal device detects the first signal using the first resource.

[0139] Exemplarily, the first signal can be any signal, which is not limited by the present application. The first resource can be a resource allocated by the network device for the terminal device to transmit the first signal.

[0140] S312, the terminal device does not detect the first signal using the first resource.

[0141] Exemplarily, the terminal device can not receive the first signal due to limited communication link, being blocked by an obstacle, etc.

[0142] S314, the network device does not receive the response information of the first signal from the terminal device.

[0143] Since the terminal device does not detect the first signal, the terminal device will not send the response information of the first signal. Correspondingly, the network device does not receive the response information of the first signal from the terminal device.

[0144] S316, the network device sends a second signal based on first configuration information. Correspondingly, the terminal device detects the second signal based on the first configuration information.

[0145] Specifically, the network device sends the second signal when the network device does not receive the response information of the first signal from the terminal device, or the network device sends the second signal in the case that the network device does not receive the response information of the first signal from the terminal device.

[0146] Exemplarily, the first configuration information can be indicated by the network device to the terminal device, or the first configuration information can be specified by a protocol, or the first configuration information can be pre-configured in the terminal device and the network device, and the present application does not make any limitation in this regard.

[0147] Exemplarily, if the first configuration information is indicated by the network device to the terminal device, the first configuration information can be carried in a system message.

[0148] Exemplarily, the second signal can be referred to as an alert signal.

[0149] Specifically, the first configuration information is used to configure the transmission of the second signal on the second resource. Exemplarily, the first configuration information can include at least one of the following:

[0150] the period of transmitting the second signal, the time domain offset of transmitting the second signal in each period, the frame carrying the second signal, etc.

[0151] Exemplarily, the manner in which the first configuration information configures the period of transmitting the second signal and the time domain offset of transmitting the second signal in each period can include the following three ways:

[0152] In the first way, the period of transmitting the second signal configured by the first configuration information can take a hyperframe as the measurement granularity, and correspondingly, the time domain offset of transmitting the second signal in each period configured by the first configuration information also takes a hyperframe as the measurement granularity, and 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 (period#1) of transmitting the second signal and the time domain offset (offset#1) of transmitting the second signal in each period, and the hyperframe number (HFN) satisfying the following formula 1 is the hyperframe carrying the second signal: HFN mod period#1 = offset#1 [Formula 1]

[0153] An example is shown in FIG. 4. There are N hyperframes, which are HFN 1, HFN 2, HFN 3, …, HFN N, the period of transmitting the second signal configured by the first configuration information is 8 hyperframes, and the time domain offset of transmitting the second signal in each period is 2 hyperframes. HFN2, HFN10, HFN18… in the N hyperframes 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 hyperframes in the N hyperframes can be used to carry other signals.

[0154] If the frame carrying the second signal is the first frame, the first frame includes Q second frames, the first configuration information can further include first indication information, the first indication information being used to indicate at least one second frame of the Q second frames for carrying the second signal. An example is that the first frame is a super frame and the second frame is a system frame. As shown in FIG. 4, an example is that the first frame is the HFN 2 shown in FIG. 4, and the Q second frames are 1024 system frames included in the HFN 2. The 1024 system frames can be divided into groups, and each group is represented by one bit. For example, each 128 system frames of the 1024 system frames is divided into a group, and thus the first indication information 10000000 indicates that the first 128 system frames of the 1024 system frames are used to carry the second signal, and the remaining system frames of the 1024 system frames can be used to carry other signals. Here, an example is given for the HFN 2, and other super frames (for example, HFN 10, HFN 18, and the like) used to carry the second signal can be configured in the same manner as the HFN 2, and thus details are not 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, …, and subframe 9 respectively. As shown in FIG. 4, an example is given for the first frame being SFN 0 of the first 128 system frames of the 1024 system frames, and the second frame being 10 subframes included in the SFN 0. The first indication information 1111111111 indicates that the 10 subframes included in the SFN 0 are all used to transmit the second signal, or the first indication information 1111100000 indicates that the first 5 subframes of the 10 subframes included in the SFN 0 are used to carry the second signal, and the last 5 subframes of the 10 subframes included in the SFN 0 are used to carry other signals. Here, an example is given for the SFN 0, and other system frames of the first 128 system frames of the 1024 system frames can be configured in the same manner as the SFN 0, and thus details are not repeated here.

[0156] In the second mode, the period of transmitting the second signal configured by the first configuration information can use a system frame as a measurement granularity, and correspondingly, the time domain offset of transmitting the second signal in each period configured by the first configuration information also uses a system frame as a measurement granularity. In this case, the frame carrying the second signal configured by the first configuration information is a system frame. For example, the first configuration information includes a period (period#2) of transmitting the second signal and a time domain offset (offset#2) of transmitting the second signal in each period, and the system frame number (SFN) satisfying the following formula 2 is a system frame carrying the alarm signal: SFN mod period#2 = offset#2 [formula 2]

[0157] In the third mode, the period of transmitting the second signal configured by the first configuration information can use a subframe as a measurement granularity, and correspondingly, the time domain offset of transmitting the second signal in each period configured by the first configuration information also uses a subframe as a measurement granularity. In this case, the frame carrying the second signal configured by the first configuration information is a subframe. For example, the first configuration information includes a period (period#3) of transmitting the second signal and a time domain offset (offset#3) of transmitting the second signal in each period, and the subframe satisfying the following formula 3 is a subframe carrying the second signal: subframe mod period#3 = offset#3 [formula 3]

[0158] Specifically, the manner in which the network device transmits the second signal can include the following three modes:

[0159] Mode 1: The network device transmits at least one third frame based on the first configuration information, the at least one third frame including A synchronization signals and the second signal, and the A synchronization signals being carried in a frame header part of a first third frame in the at least one third frame.

[0160] In the mode 1, the first configuration information can further include at least one of the following:

[0161] 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, the range of the area allowed to be used by the synchronization signal, and the like.

[0162] For example, the different symbol streams refer to different bit sequences, and the different arrangement orders of the symbol streams refer to different arrangement orders of the bit sequences.

[0163] Specifically, the second configuration information is used to indicate the transmission parameter of the second signal. For example, the second configuration information includes at least one of the following:

[0164] 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, and the like. For example, the modulation used by each second signal can be quadrature amplitude modulation (QAM) modulation, pulse amplitude modulation (PAM) modulation, phase shift keying (PSK) modulation, and the like, and the coding parameters used by each second signal can refer to coding redundancy version (RV), and the like.

[0165] Exemplarily, the at least one third frame configured by the first configuration information includes A synchronization signals, and the A synchronization signals correspond to A1 different symbol streams. The range of the area allowed to be used by the synchronization signal can be a cell level, a tracking area level, or a RAN notification area level, and the like.

[0166] Exemplarily, the frame structure shown in FIG. 5 is taken as an example. Mode 1 is taken as an example with A equal to 8 and A1 equal to 4, but mode 1 does not limit the specific values of A and A1. The 8 synchronization signals are respectively denoted 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 8 synchronization signals correspond to 4 symbol streams, which are respectively 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.

[0167] For example, the first configuration information can carry the different arrangement orders of the above-mentioned 4 symbol streams to indicate different second configuration information through Table 1 under mode 1.

[0168] Table 1

[0169] The above Table 1 takes the 4 second configuration information indicated by the 4 arrangement orders of the 4 symbol streams as an example, and the 4 symbol streams can have more arrangement orders, and can indicate more second configuration information. Table 1 is not listed one by one.

[0170] In example 1, if the synchronization signal 1 corresponds to the symbol stream 1, the synchronization signal 2 corresponds to the symbol stream 2, the synchronization sequence 3 corresponds to the symbol stream 3, the synchronization sequence 4 corresponds to the symbol stream 4, the synchronization signal 5 corresponds to the symbol stream 1, the synchronization signal 6 corresponds to the symbol stream 2, the synchronization sequence 7 corresponds to the symbol stream 3, and the synchronization sequence 8 corresponds to the symbol stream 4, that is, the arrangement order of the symbol streams corresponding to the eight synchronization signals is the symbol stream 1, the symbol stream 2, the symbol stream 3, and the symbol stream 4, and the arrangement order of the four symbol streams indicates the second configuration information #1 in Table 1. In example 2, if the synchronization signal 1 corresponds to the symbol stream 4, the synchronization signal 2 corresponds to the symbol stream 3, the synchronization sequence 3 corresponds to the symbol stream 2, the synchronization sequence 4 corresponds to the symbol stream 1, the synchronization signal 5 corresponds to the symbol stream 4, the synchronization signal 6 corresponds to the symbol stream 3, the synchronization sequence 7 corresponds to the symbol stream 2, and the synchronization sequence 8 corresponds to the symbol stream 1, that is, the arrangement order of the symbol streams corresponding to the eight synchronization signals is the symbol stream 4, the symbol stream 3, the symbol stream 2, and the symbol stream 1, and the arrangement order of the four symbol streams indicates the second configuration information #2 in Table 1.

[0171] Correspondingly, the terminal device detects the 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 A detected synchronization signals; and the terminal device receives the second signal based on the determined second configuration information.

[0172] Exemplarily, the terminal device determines, based on the eight detected synchronization signals, that the arrangement order of the symbol streams corresponding to the eight synchronization signals is the symbol stream 1, the symbol stream 2, the symbol stream 3, and the symbol stream 4, and determines to receive the second signal using the second configuration information #1. For example, as shown in FIG. 5, the number of the second signals configured by the second configuration information #1 is 2, and the number of the repeated transmissions of each second signal is 2, and the terminal device should receive the second signal 1, the second signal 1, the second signal 2, and the second signal 2 in sequence after receiving the eight synchronization signals. The second signal 2 in the second repeated transmission is not shown in FIG. 5.

[0173] Specifically, the at least one third frame is a frame configured by the first configuration information in S310 to carry the second signal, and the third frame can be a superframe, a system frame, a subframe, etc., which is not limited in the present application.

[0174] The transmission parameter of the second signal in the above-mentioned mode 1 is implicitly indicated by the arrangement order of the symbol streams corresponding to the A synchronization signals, which not only saves the amount of information required to be transmitted, but also increases the flexibility of the transmission parameter of the second signal.

[0175] Manner 2: The network device sends, based on the first configuration information, a plurality of fourth frames, the plurality of fourth frames comprising one fifth frame and at least one sixth frame, the fifth frame comprising B first synchronization signals and first control information, the B first synchronization signals being carried in a frame header part of the fifth frame, each of the at least one sixth frame comprising C second synchronization signals and second signals, the C second synchronization signals being carried in a frame header part of each of the at least one sixth frame, the first control information being used to indicate transmission parameters of the second signals comprised in the at least one sixth frame.

[0176] In the manner 2, the first configuration information can further comprise at least one of the following:

[0177] a number of the first synchronization signals comprised in the fifth frame, the first synchronization signals being associated with a control frame, a number of the second synchronization signals comprised in each of the at least one sixth frame, the second synchronization signals being associated with a data frame, a 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, a frame interval of the plurality of fourth frames, and a range of areas allowed to be used by the first synchronization signals and the second synchronization signals.

[0178] Exemplarily, the different symbol streams refer to different bit sequences, and the different arrangement orders of the symbol streams refer to different arrangement orders of the bit sequences.

[0179] Specifically, the first control information comprised in the fifth frame is used to indicate the transmission parameters of the second signals comprised in the at least one sixth frame. For example, the first control information is used to indicate at least one of the following:

[0180] a number of the second signals, a number of times of repeated transmission of each of the second signals, modulation and coding parameters adopted by each of the second signals, and the like.

[0181] Specifically, the number of the first synchronization signals comprised in the fifth frame configured by the first configuration information is B, the number of the second synchronization signals comprised in each of the at least one sixth frame is C, a 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 range of areas allowed to be used by the first synchronization signals and the second synchronization signals can be a cell level, a tracking area level, or a RAN notification area level, and the like.

[0182] 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. Specifically, there are two cases: case one, when B is not equal to C, the data frame and the control frame can be distinguished by the different number of synchronization signals, or the control frame and the data frame can be distinguished by different synchronization signals; case two, when B is equal to C, the control frame and the data frame can be distinguished by different synchronization signals.

[0183] An example is shown in FIG. 6, which shows the frame structure of the above-mentioned case one. In case one, B is not equal to C, and mode 2 is taken as an example with B equal to 2, C equal to 4, and C1 equal to 2, but mode 2 does not limit the specific values of B, C, and C1, as long as B is not equal to C. The fifth frame includes two first synchronization signals, which are respectively denoted as first synchronization signal 1 and 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; in the case where B is equal to 2, B1 is any positive integer less than or equal to 2. Each of the at least one sixth frame includes four second synchronization signals, which are respectively denoted 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 respectively 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.

[0184] For example, in mode 2, the first configuration information can be indicated by Table 2 below:

[0185] Table 2

[0186] Example 1, if the second synchronization signal 1 corresponds to the symbol stream 1, the second synchronization signal 2 corresponds to the symbol stream 2, the second synchronization sequence 3 corresponds to the symbol stream 1, and the second synchronization sequence 4 corresponds to the symbol stream 2, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is symbol stream 1, symbol stream 2, and the arrangement order of the two symbol streams indicates the first one of the at least one sixth frame; Example 2, if the second synchronization signal 1 corresponds to the symbol stream 2, the second synchronization signal 2 corresponds to the symbol stream 1, the second synchronization sequence 3 corresponds to the symbol stream 2, and the second synchronization sequence 4 corresponds to the symbol stream 1, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is symbol stream 2, symbol stream 1, and the arrangement order of the two symbol streams indicates the second one of the at least one sixth frame.

[0187] 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; and the terminal device receives the second signal included in the at least one sixth frame based on the first control information included in the fifth frame.

[0188] Exemplarily, the terminal device can determine the current frame as a control frame based on the number of the detected first synchronization signals, or the terminal device can determine the current frame as a control frame based on the detected first synchronization signals, then parse the first control information included in the current frame, and receive the second signals included in the at least one sixth frame based on the first control information. For example, as shown in FIG. 6, the first control information indicates that the number of the second signals is 2, and the number of repeated transmissions of each second signal is 1, and the terminal device receives the second signal 1 in the first subsequent sixth frame and receives the second signal 2 in the second subsequent sixth frame.

[0189] Exemplarily, the terminal device can also determine the position of the current sixth frame in the 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 can determine the current frame as a data frame based on the number of the detected second synchronization signals, or the terminal device can determine the current frame as a data frame based on the detected second synchronization signals; further, the terminal device determines the current frame as the first data frame in the two data frames based on the arrangement order of the symbol streams corresponding to the four second synchronization signals as symbol stream 1, symbol stream 2; or the terminal device determines the current frame as the second data frame in the two data frames based on the arrangement order of the symbol streams corresponding to the four second synchronization signals as symbol stream 2, symbol stream 1.

[0190] Another example is shown in FIG. 7, which shows the frame structure of the above-mentioned case two. In case two, B is equal to C, and mode 2 is taken as an example with B equal to 4, C equal to 4, and C1 equal to 2, 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 denoted 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; in the case where B is equal to 4, B1 is any positive integer less than or equal to 4. The four second synchronization signals included in each of the at least one sixth frame are respectively denoted 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 respectively 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.

[0191] For example, the first configuration information in mode 2 can also be indicated by Table 3 as follows:

[0192] Table 3

[0193] In example 1, the second synchronization signal 1 corresponds to the symbol stream 1, the second synchronization signal 2 corresponds to the symbol stream 2, the second synchronization sequence 3 corresponds to the symbol stream 1, and the second synchronization sequence 4 corresponds to the symbol stream 2, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is the symbol stream 1 and the symbol stream 2, and the arrangement order of the two symbol streams indicates the first sixth frame in the at least one sixth frame; in example 2, the second synchronization signal 1 corresponds to the symbol stream 2, the second synchronization signal 2 corresponds to the symbol stream 1, the second synchronization sequence 3 corresponds to the symbol stream 2, and the second synchronization sequence 4 corresponds to the symbol stream 1, that is, the arrangement order of the symbol streams corresponding to the four second synchronization signals is the symbol stream 2 and the symbol stream 1, and the arrangement order of the two symbol streams indicates the second sixth frame in the at least one sixth frame.

[0194] Correspondingly, the terminal device detects the plurality of fourth frames based on the first configuration information. Specifically, the terminal device detects the fifth frame based on the first configuration information, and receives the second signal included in the at least one sixth frame based on the first control information included in the fifth frame.

[0195] Exemplarily, the terminal device can determine, based on the detected first synchronization signal, that the current frame is a control frame, parse the first control information included in the current frame, and receive the second signal included in the at least one sixth frame based on the first control information. For example, as shown in FIG. 7, the first control information indicates that the number of second signals is 2 and the number of repeated transmissions of each second signal is 1, and the terminal device receives the second signal 1 in the first sixth frame and receives the second signal 2 in the second sixth frame.

[0196] Exemplarily, the terminal device can also determine the position of the current sixth frame in the 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 can determine, based on the detected second synchronization signal, that the current frame is a data frame; further, the terminal device determines, based on the arrangement order of the symbol streams corresponding to the four second synchronization signals being the symbol stream 1 and the symbol stream 2, that the current frame is the first data frame in the two data frames; or, the terminal device determines, based on the arrangement order of the symbol streams corresponding to the four second synchronization signals being the symbol stream 2 and the symbol stream 1, that the current frame is the second data frame in the two data frames.

[0197] Specifically, the plurality of fourth frames are the frames configured by the first configuration information in S310 to carry the second signal, and each of the fifth frame and the at least one sixth frame included in the plurality of fourth frames can be a superframe, a system frame, a subframe, etc., which are not limited in the present application.

[0198] The first control information needs to be sent to indicate the transmission parameter of the second signal in the above-mentioned manner 2, the first control information can carry more information for scheduling the second signal, and more accurate scheduling of the second signal can be implemented compared with the above-mentioned manner 1. In addition, the above-mentioned manner 2 can also determine the position of the data frame, and the difficulty of parsing the data frame can be reduced.

[0199] Manner 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 parameter of the second signal of each of the at least one seventh frame.

[0200] Optionally, each of the at least one seventh frame can also 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.

[0201] Specifically, the second control information is used to indicate at least one of the following:

[0202] Each of the at least one seventh frame carries the time domain resource and the frequency domain resource of the second signal, the signal type of the second signal carried by each of the at least one seventh frame, the PLMN to which the second signal carried by each of the at least one seventh frame belongs, the transmission period of the at least one seventh frame, the frame interval of the at least one seventh frame, and the area range allowed to be used by the synchronization signal.

[0203] Specifically, the signal type of the second signal carried by each of the at least one seventh frame indicated by the second control information can be identified by a logical channel identification (LCID), for example, different seventh frames are used to transmit alarm information for different areas or alarm information for different services. For example, as shown in FIG. 8, the second signal 1 carried by the first seventh frame carries the identification of the updated system message or the public message, the second signal 2 carried by the second seventh frame is used to carry the identification of the terminal device that misses the paging, and the like. The area range allowed to be used by the synchronization signal indicated by the second control information can be a cell level, a tracking area level, or a RAN notification area level, and the like.

[0204] 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 one of the at least one seventh frame based on the first configuration information, and receives the second signal included in the current seventh frame based on the second control information.

[0205] In the above-described manner 3, a control channel and a data channel can be newly added, and the control channel and the data channel can be distinguished by LCID. The control channel is used to transmit second control information, and the data channel is used to transmit a second signal. Exemplarily, the control channel can be an alert control channel (ACCH), and the data channel can be an alert transport channel (ATCH).

[0206] Specifically, the at least one seventh frame is a frame configured by the first configuration information in the S310 to carry the second signal. The seventh frame can be a superframe, a system frame, a subframe, etc., which is not limited in the present application.

[0207] In the above-described manner 3, a special second control information needs to be sent to indicate the transmission parameter of the second signal. The second control information can carry more information for scheduling the second signal, and more accurate scheduling of the second signal can be implemented compared with the above-described manner 1. In addition, the above-described manner 3 carries the second control information in each frame, and the analysis of each frame does not need to depend on other frames, and fast analysis of each frame can be implemented.

[0208] Through the above-described method 300, the network device can distinguish the transmission resource of the first signal from the transmission resource of the second signal. In the case that the communication link is extremely limited, the network device knows that the terminal device cannot receive the first signal in the first resource, and sends the second signal to the terminal device in the second resource, so as to improve the success rate of the terminal device receiving the second signal.

[0209] The terminal device of the embodiments of the present application can be a terminal device in an idle state (RRC_IDLE), a deactivated state (also referred to as RRC_INACTIVE), or a connected state (also referred to as RRC_CONNECTED). Among them, the idle state (RRC_IDLE) and the deactivated state (also referred to as RRC_INACTIVE) are also commonly referred to as "non-connected state". The following lists several scenarios to which the embodiments of the present application can be applied, but the scenarios to which the embodiments of the present application can be applied are not limited to this:

[0210] Example 1, if the terminal device is in the idle state, the first signal can be a paging signal, and the second signal can indicate that the terminal device misses the paging signal or the second signal can indicate that the terminal device is paged.

[0211] In Example 2, the embodiments of the present application can be used for beam management. If a terminal device is in a connected state, the terminal device detects beam failure detection (BFD) and attempts to search for a candidate beam, and performs beam reporting and beam recovery through a physical random access channel (PRACH) corresponding to the candidate beam. If the terminal device does not search for a candidate beam, the terminal device can start detecting a second signal. The second signal can carry at least one beam ID, and the terminal device can determine at least one candidate beam according to the detected second signal, and adjust a beam parameter (for example, adjust a quasi-co-location (QCL) relationship, etc.), thereby improving the efficiency of subsequent beam recovery.

[0212] In Example 3, the embodiments of the present application can also be used for cell reselection. When a terminal device in an idle state fails in cell measurement or cell reselection, the terminal device can start detecting a second signal. The second signal can carry a neighbor cell parameter, which includes a cell ID, a tracking area ID, a RAN ID, a frequency of a neighbor cell, etc. The terminal device in the idle state can determine that a cell ID has changed according to the detected second signal, and can load a previously received neighbor cell system message to complete cell reselection. The neighbor cell system message can be obtained through broadcasting of a source cell or based on a request of the terminal device.

[0213] Additionally, the second signal of the embodiments of the present application can also be used to transmit alarm information, public safety information, mobility management information, etc., which are not limited by the present application.

[0214] It should be understood that the size of the sequence number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0215] It should also be understood that in some of the above embodiments, the devices in the existing network architecture are mainly exemplarily described, and it should be understood that the specific form of the devices is not limited by the embodiments of the present application. For example, devices that can achieve the same function in the future are also applicable to the embodiments of the present application.

[0216] It can be understood that the methods and operations implemented by the devices (such as the terminal device, the network device, etc.) in the above method embodiments can also be implemented by components (such as chips or circuits) of the devices.

[0217] The above describes the method provided by the embodiments of the present application in detail in combination with FIG. 1 to FIG. 8. 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 contain the corresponding hardware structure and / or software module for executing each function in order to implement the above functions.

[0218] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0219] The following describes the communication apparatus provided by the embodiments of the present application in combination with FIG. 9 to FIG. 11. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the above method embodiments, and part of the content will not be described again for the sake of brevity. The embodiments of the present application can divide the functional modules of the terminal device or the network device according to the above method examples, for example, each functional module can be divided according to each function, or two or more functions can be integrated in one processing module. The above integrated module can be realized in the form of hardware or software functional module. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division, and another division manner can be used in actual implementation. The following takes the example of dividing each functional module according to each function.

[0220] The above describes the communication method provided by the present application in detail, and the following introduces the communication apparatus provided by the present application. In one possible implementation manner, the apparatus is used to implement the steps or processes corresponding to the terminal device in the above method embodiments. In another possible implementation manner, the apparatus is used to implement the steps or processes corresponding to the network device in the above method embodiments.

[0221] FIG. 9 is a schematic block diagram of the communication apparatus 10 provided by the embodiments of the present application. As shown in FIG. 9, the apparatus 10 can include a communication unit 11 and a processing unit 12. The communication unit 11 can communicate with the outside, and the processing unit 12 is used for data processing. The communication unit 11 can also be referred to as a communication interface or a transceiver unit.

[0222] In one possible design, the apparatus 10 can implement steps or procedures corresponding to those performed by a terminal device in the above-described method embodiments, where the processing unit 12 is configured to perform processing-related operations of the terminal device in the above-described method embodiments, and the communication unit 11 is configured to perform transmitting and receiving-related operations of the terminal device in the above-described method embodiments.

[0223] In another possible design, the apparatus 10 can implement steps or procedures corresponding to those performed by a network device in the above-described method embodiments, where the communication unit 11 is configured to perform receiving and transmitting-related operations of the network device in the above-described method embodiments, and the processing unit 12 is configured to perform processing-related operations of the network device in the above-described method embodiments.

[0224] It is understood that the apparatus 10 herein is embodied in the form of a functional unit. The term "unit" herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory that execute one or more software or firmware programs, a combinational logic circuit, and / or other suitable components that provide the described functionality. In one optional example, it is understood by those skilled in the art that the apparatus 10 can be embodied as a terminal device in the above-described embodiments, and can be configured to perform the procedures and / or steps corresponding to the terminal device in the above-described method embodiments, or the apparatus 10 can be embodied as a network device in the above-described embodiments, and can be configured to perform the procedures and / or steps corresponding to the network device in the above-described method embodiments, and thus, details are not repeated herein.

[0225] The apparatus 10 in each of the above-described solutions has the functionality to implement the corresponding steps performed by a terminal device in the above-described methods, or the apparatus 10 in each of the above-described solutions has the functionality to implement the corresponding steps performed by a network device in the above-described methods. The functionality can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functionality; for example, the communication unit can be replaced by a transceiver (e.g., a transmitting unit in the communication unit can be replaced by a transmitter, and a 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, which performs the transmitting and receiving operations and related processing operations in each of the above-described method embodiments.

[0226] In addition, the communication unit can also be a transceiver (e.g., can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit. In embodiments of the present application, the apparatus of FIG. 9 can be a terminal device or a network device in the foregoing embodiments, or can be a chip or a chip system, such as a system on chip (SoC). The communication unit can be an input / output circuit or a communication interface, and the processing unit can be a processor or a microprocessor integrated on the chip or an integrated circuit. In this regard, no limitation is made.

[0227] FIG. 10 is a schematic block diagram of a communication apparatus 20 according to an embodiment of the present application. The apparatus 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. The processor 21 is configured to execute instructions to control the transceiver 22 to transmit and / or receive signals.

[0228] Optionally, the apparatus 20 can further include a memory 23. The memory 23, the processor 21, and the transceiver 22 communicate with each other through an internal connection path. The memory 23 is configured to store instructions. The processor 21 can execute the instructions stored in the memory 23. In a possible implementation, the apparatus 20 is configured to implement the procedures and steps corresponding to a terminal device in the method embodiments described above. In another possible implementation, the apparatus 20 is configured to implement the procedures and steps corresponding to a network device in the method embodiments described above.

[0229] It should be understood that the apparatus 20 can be a terminal device or a network device in the embodiments described above, or can be a chip or a chip system. Correspondingly, the transceiver 22 can be a transceiver circuit of the chip, and no limitation is made herein. Specifically, the apparatus 20 can be configured to execute the procedures and steps corresponding to a terminal device or a network device in the method embodiments described above. Optionally, the memory 23 can include a read-only memory and a random access memory, and provide instructions and data for the processor. A part of the memory can also include a non-volatile random access memory. For example, the memory can also store device type information. The processor 21 can be configured to execute the instructions stored in the memory. When the processor 21 executes the instructions stored in the memory, the processor 21 is configured to execute the procedures and steps of the method embodiments corresponding to a terminal device or a network device described above.

[0230] In the implementation process, the steps of the above method can be completed by the integrated logic circuit of hardware in the processor or the instruction in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware processor execution completion, or executed by the combination of hardware and software modules in the processor. The software module can be located in the mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0231] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method embodiments can be completed by the integrated logic circuit of hardware in the processor or the instruction in the form of software. The above processor can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The processor in the embodiments of the present application can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware decoding processor execution completion, or executed by the combination of hardware and software modules in the decoding processor. The software module can be located in the mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0232] It is to be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0233] It should be noted that when the processor is a general processor, a DSP, an ASIC, a FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, the memory (storage module) can be integrated in the processor. It should also be noted that the memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0234] FIG. 11 is a schematic diagram of a chip system 30 provided by 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.

[0235] The logic circuit 31 can be a processing circuit in the chip system 30. The logic circuit 31 can be coupled with a storage unit, and invoke instructions in the storage unit, so that the chip system 30 can implement the methods and functions of the embodiments of the present application. The input / output interface 32 can be an input / output circuit in the chip system 30, and output information processed by the chip system 30, or input data or signaling to be processed by the chip system 30.

[0236] Specifically, for example, if the terminal device is installed with the chip system 30, the logic circuit 31 is coupled with 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 with the input / output interface 32, and the logic circuit 31 can send the first signal or the second signal through the input / output interface 32, which can be generated by the logic circuit 31.

[0237] As a solution, the chip system 30 is configured to implement the operations performed by the terminal device in the above method embodiments.

[0238] For example, the logic circuit 31 is configured to implement the processing-related operations performed by the terminal device in the above method embodiments, such as the processing-related operations performed by the terminal device in the embodiment shown in FIG. 3; and the input / output interface 32 is configured to implement the sending and / or receiving-related operations performed by the terminal device in the above method embodiments, such as the sending and / or receiving-related operations performed by the terminal device in the embodiment shown in FIG. 3.

[0239] As another solution, the chip system 30 is configured to implement the operations performed by the network device in the above method embodiments.

[0240] For example, the logic circuit 31 is configured to implement the processing-related operations performed by the network device in the above method embodiments, such as the processing-related operations performed by the network device in the embodiment shown in FIG. 3; and the input / output interface 32 is configured to implement the sending and / or receiving-related operations performed by the network device in the above method embodiments, such as the processing-related operations performed by the network device in the embodiment shown in FIG. 3.

[0241] In addition, the present application also provides a computer readable storage medium, which stores computer instructions, and when the computer instructions are run on a computer, the operations and / or processes performed by the terminal device or the network device in the method embodiments of the present application are performed.

[0242] The present application also provides a computer program product, which comprises computer program codes or instructions, and when the computer program codes or instructions are run on a computer, operations and / or processes performed by the terminal device or the network device in the method embodiments of the present application are executed.

[0243] In addition, the present application also provides a communication system, which comprises the terminal device and the network device in the embodiments of the present application.

[0244] It should also be noted that the memory described herein is intended to include, but not limited to, these and any other suitable type of memory.

[0245] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solutions. A person skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here. In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms. The units described as separate components can be or can not be physically separate, and the components shown as units can be or can not be physical units, i.e. can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments of the present application. In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0246] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that make contributions to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various media that can store program codes.

[0247] It should be understood that the "embodiments" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the various embodiments throughout the 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.

[0248] It should also be understood that the present application refers to "first", "second" and the like ordinal numbers are used to distinguish a plurality of objects, and are not used to limit the size, content, order, timing, priority or importance of the plurality of objects. For example, the first message and the second message do not represent the difference in the amount of information, content, priority or importance.

[0249] It should also be understood that in the present application, "when", "if" and "if" all refer to the corresponding processing of the network element under certain objective circumstances, not the time limit, and also do not require the network element to have a judgment action when it is implemented, nor does it mean that there are other limitations.

[0250] It should also be understood that in the present application, "at least one" means one or more, and "a plurality of" means two or more. "At least one" or similar expressions refer to one or more, that is, any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c.

[0251] It should also be understood that, in the application, the meaning of the expression similar to "the item includes one or more of the following: A, B, and C" is generally that the item can be any one 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 item. When the expression is "the item includes at least one of the following: A, B,..., and X", that is, the expression has more elements, the applicable items of the item can also be obtained according to the foregoing rules.

[0252] It should also be understood that the term "and / or" in this application is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. For example, A / B means A or B.

[0253] It should also be understood that in each embodiment of the application, "A corresponds to B" means that B is associated with A and can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0254] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: not detecting a first signal using a first resource; detecting a second signal based on first configuration information, the first configuration information being used for configuring transmission of the second signal on a second resource, the second signal being sent by a network device when no response information of the first signal from a terminal device is received.

2. The method of claim 1, wherein, The first configuration information comprises at least one of the following: a period of transmitting the second signal, a time domain offset of transmitting the second signal in each period, a frame carrying the second signal.

3. The method of claim 2, wherein, If the frame carrying the second signal is a first frame, the first frame comprises Q second frames, the first configuration information further comprises first indication information, the first indication information being used for indicating at least one second frame for carrying the second signal in the Q second frames, 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 comprises: detecting at least one third frame based on the first configuration information, the at least one third frame comprising A synchronization signals and the second signal, the A synchronization signals being carried in a frame header part of a first third frame in the at least one third frame, A being a positive integer.

5. The method of claim 4, wherein, The first configuration information further comprises at least one of the following: a number of synchronization signals included in the at least one third frame, a number of different symbol streams corresponding to the A synchronization signals included in the at least one third frame, different arrangement orders of symbol streams corresponding to the A synchronization signals indicating different second configuration information, a frame interval of the at least one third frame, a range of an area allowed to be used by the synchronization signals, wherein the second configuration information is used for indicating transmission parameters of the second signal.

6. The method of claim 5, wherein, The second configuration information comprises at least one of the following: a number of the second signals, a number of times of repeated transmission of each of the second signals, modulation and coding parameters adopted by each of the second signals.

7. The method according to claim 5 or 6, characterized in that, The detecting the at least one third frame based on the first configuration information comprises: detecting the A synchronization signals based on the first configuration information; determining a second configuration information based on an arrangement order of symbol streams corresponding to the detected A synchronization signals; receiving the second signal 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 comprises: detecting a plurality of fourth frames based on the first configuration information, the plurality of fourth frames comprising one fifth frame and at least one sixth frame, the fifth frame comprising B first synchronization signals and first control information, the B first synchronization signals being carried in a frame header part of the fifth frame, each of the at least one sixth frame comprising C second synchronization signals and the second signal, the C second synchronization signals being carried in a frame header part of each of the at least one sixth frame, the first control information being used for indicating transmission parameters of the second signal included in the at least one sixth frame, B and C being positive integers.

9. The method of claim 8, wherein, Arrangement orders of symbol streams corresponding to the C second synchronization signals included in each of the at least one sixth frame are different.

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

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: a number of the second signals, a number of times of repeated transmission of each of the second signals, and 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 the plurality of fourth frames based on the first configuration information comprises: detecting the fifth frame based on the first configuration information; receiving the second signals included in the at least one sixth frame 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: determining a position of a current sixth frame in the at least one sixth frame based on arrangement orders of symbol streams corresponding to C second synchronization signals included in any one of the at least one sixth frame.

14. The method of any one of claims 1 to 3, wherein, The detecting the second signals based on the first configuration information comprises: detecting at least one seventh frame based on the first configuration information, each of the at least one seventh frame includes second control information and the second signals, and the second control information is used to indicate transmission parameters of the second signals of each of the at least one seventh frame.

15. The method of claim 14, wherein, The second control information is used to indicate at least one of the following: time domain resources and frequency domain resources of the second signals carried by each of the at least one seventh frame, a signal type of the second signals carried by each of the at least one seventh frame, a public land mobile network (PLMN) to which the second signals carried by each of the at least one seventh frame belong, a transmission period of the at least one seventh frame, a frame interval of the at least one seventh frame, and a range of an area allowed to be used by the synchronization signals.

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

17. The method according to any one of claims 14 to 16, characterized in that, The detecting the 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; receiving the second signals included in a current seventh frame based on the detected second control information.

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

19. A method of communication, comprising: The method comprises: transmitting a first signal using a first resource; not receiving response information of the first signal from a terminal device; and transmitting a second signal based on first configuration information, the first configuration information being used to configure transmission of the second signal on a second resource.

20. The method of claim 19, wherein, The first configuration information comprises at least one of the following: a period of transmitting the second signal, a time domain offset of transmitting the second signal in each period, a frame carrying the second signal.

21. The method of claim 20, wherein, If the frame carrying the second signal is a first frame, the first frame comprises Q second frames, and the first configuration information further comprises first indication information, the first indication information being used for indicating at least one second frame of the Q second frames for carrying the second signal, wherein Q is a positive integer.

22. The method of any one of claims 19-21, wherein, The transmitting the second signal based on the first configuration information comprises: transmitting at least one third frame based on the first configuration information, the at least one third frame comprising A synchronization signals and the second signal, the A synchronization signals being carried in a frame header part of a first third frame in the at least one third frame, and A being a positive integer.

23. The method of claim 22, wherein, The first configuration information further comprises at least one of the following: a number of synchronization signals comprised in the at least one third frame, a number of different symbol streams corresponding to the A synchronization signals comprised in the at least one third frame, different arrangement sequences of symbol streams corresponding to the A synchronization signals indicating different second configuration information, a frame interval of the at least one third frame, a range of a region allowed to be used by the synchronization signals, wherein the second configuration information is used for indicating transmission parameters of the second signal.

24. The method of claim 23, wherein, The second configuration information comprises at least one of the following: a number of the second signals, a number of times of repeated transmission of each of the second signals, modulation and coding parameters adopted by each of the second signals.

25. The method of any one of claims 19-21, wherein, The transmitting the second signal based on the first configuration information comprises: transmitting a plurality of fourth frames based on the first configuration information, the plurality of fourth frames comprising one fifth frame and at least one sixth frame, the fifth frame comprising B first synchronization signals and first control information, the B first synchronization signals being carried in a frame header part of the fifth frame, each of the at least one sixth frame comprising C second synchronization signals and the second signal, the C second synchronization signals being carried in a frame header part of each of the at least one sixth frame, the first control information being used for indicating transmission parameters of the second signal comprised in the at least one sixth frame, and B and C being positive integers.

26. The method of claim 25, wherein, Arrangement sequences of symbol streams corresponding to the C second synchronization signals comprised in each of the at least one sixth frame are different.

27. The method of claim 25 or 26, wherein, The first configuration information further comprises at least one of the following: a number of first synchronization signals comprised in the fifth frame, the first synchronization signals being associated with a control frame, a number of second synchronization signals comprised in each of the at least one sixth frame, the second synchronization signals being associated with a data frame, a number of different symbol streams corresponding to the C second synchronization signals, different arrangement sequences of symbol streams corresponding to the C second synchronization signals indicating different positions of data frames, a frame interval of the plurality of fourth frames, a range of a region allowed to be used by the first synchronization signals and the second synchronization signals, wherein the control frame is used for carrying first control information indicating the transmission parameters of the second signal, and the data frame is used for carrying the second signal.

28. The method of any one of claims 25-27, wherein, The first control information is used for indicating at least one of the following: a number of the second signals, a number of repetitions of each of the second signals, a modulation and coding parameter used by each of the second signals.

29. The method of any one of claims 19-21, wherein, The sending of the second signals based on the first configuration information comprises: sending at least one seventh frame based on the first configuration information, each of the at least one seventh frame comprising second control information and the second signals, the second control information being used for indicating a transmission parameter of the second signals in each of the at least one seventh frame.

30. The method of claim 29, wherein, The second control information is used for indicating at least one of the following: a time domain resource and a frequency domain resource of the second signals carried in each of the at least one seventh frame, a signal type of the second signals carried in each of the at least one seventh frame, a public land mobile network (PLMN) to which the second signals carried in each of the at least one seventh frame belong, a transmission period of the at least one seventh frame, a frame interval of the at least one seventh frame, a range of areas allowed to use the synchronization signals.

31. The method of claim 29 or 30, wherein, Each of the at least one seventh frame further comprises D synchronization signals, the D synchronization signals being carried in a frame header part of each of the at least one seventh frame, D being a positive integer.

32. The method of any one of claims 19-31, wherein, The first configuration information is carried in a system message.

33. A communications device, characterized by The apparatus comprises means or units for performing the method of any of claims 1-32.

34. A communications device, characterized by The apparatus comprises: a processor configured to execute computer instructions stored in a memory, so that the apparatus performs the communication method of any of claims 1-18, or so that the apparatus performs the communication method of any of claims 19-32.

35. A communications device, characterized by The apparatus comprises a logic circuit and an input / output interface, the logic circuit being configured to be coupled with the input / output interface, to transmit data through the input / output interface, to perform the communication method of any of claims 1-18, or to perform the communication method of any of claims 19-32.

36. A computer-readable storage medium, characterized in that, A computer program product, having stored thereon computer instructions, which when executed on a computer, cause the communication method of any of claims 1-18 to be performed, or cause the communication method of any of claims 19-32 to be performed.

37. A chip, characterized by The chip comprises a processor and a communication interface, the processor reading instructions stored on a memory through the communication interface, to perform the communication method of any of claims 1-18, or to perform the communication method of any of claims 19-32.

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