Communication method and device, storage medium and computer program product

Abstract

A communication method and apparatus, a storage medium and a computer program product relate to the technical field of wireless communication, and are used for sending a plurality of first common signals on a plurality of frequency domain resources to improve the flexibility of sending the first common signals. In the application, a terminal device receives a first common signal. The first common signal is one of a plurality of first common signals, and the plurality of first common signals are transmitted by the network device through a plurality of time-frequency resources. The plurality of time-frequency resources correspond to N time domain resources, the plurality of time-frequency resources correspond to M frequency domain resources, N is a positive integer, and M is an integer greater than 1. Therefore, a plurality of time-frequency resources can correspond to a plurality of frequency-domain resources, so that the flexibility of sending the first common signal by the network device can be improved. And on the other hand, the plurality of first common signals can occupy a plurality of frequency domain resources, so that the number of time domain resources occupied by the plurality of first common signals can be reduced, and the energy consumption can be reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless communication technology, and specifically to a communication method, device, storage medium, and computer program product. Background Art

[0002] Compared with the fourth generation (4G) long term evolution (LTE) system, the fifth generation (5G) new radio (NR) system provides more flexibility in system design, including basic parameters, frame structure, and channel time and frequency resource design, which can better support forward compatibility and scalability.

[0003] In the 5G NR communication system, network devices can send a variety of public signals. For example, the downlink synchronization channel and channel of 5G NR can be composed of a variety of synchronization signal / physical broadcast channel block (SSB) sets. The SSB set contains one or more SSBs. SSB can be mainly used for cell search, cell synchronization, and sending broadcast information or system information.

[0004] Currently, public signals in communication systems can only be sent through time division multiplexing, which is not flexible enough. Summary of the invention

[0005] Embodiments of the present application provide a communication method, apparatus, storage medium, and computer program product, which are used to send multiple first common signals on multiple frequency domain resources to improve the flexibility of sending the first common signals.

[0006] In a first aspect, an embodiment of the present application provides a wireless communication method, which is applicable to a terminal device. The terminal device may be a terminal or a chip system inside the terminal. In the present application, the method is described by taking the method executed by the terminal device as an example.

[0007] In the method, the terminal device receives a first common signal. The first common signal occupies a frequency domain resource, the first common signal belongs to one of multiple first common signals sent by the network device, the multiple first common signals occupy M frequency domain resources, M is an integer greater than 1, and the frequency domain resource occupied by the first common signal belongs to one of the M frequency domain resources. The multiple first common signals belong to common signals of the same serving cell, and the multiple first common signals belong to common signals within a common signal sending cycle.

[0008] It can be seen that multiple first common signals can be sent by frequency division multiplexing, or by frequency division multiplexing and time division multiplexing. In this way, the flexibility of the network device in sending the first common signal can be improved. On the other hand, since multiple first common signals can occupy multiple frequency domain resources, the number of time domain resources occupied by the multiple first common signals can be reduced, thereby reducing energy consumption. For example, since multiple first common signals occupy fewer time domain resources, the network device sends multiple first common signals for a shorter period of time, and then the network device can extend the shutdown period, thereby reducing energy consumption. On the other hand, the time required for the terminal device to detect multiple first common signals is also reduced. This solution makes it possible for the terminal device to detect the first common signal more quickly, thereby reducing the energy consumption of the terminal device.

[0009] In a possible implementation manner, the first common signal includes: at least one of a synchronization signal, a broadcast channel, system information, or a paging message.

[0010] In a possible implementation, the first common signal occupies one time domain resource, and multiple first common signals occupy N frequency domain resources, where N is a positive integer, and the time domain resource occupied by the first common signal belongs to one of the N time domain resources.

[0011] In a possible implementation, the interval between two frequency domain resources in the M frequency domain resources is a first frequency value or a first number of resource blocks. In the present application, the multiple first common signals may be sent by a network device through multiple time-frequency resources. The multiple time-frequency resources may include M frequency domain resources and N time domain resources. The interval between two frequency domain resources in the M frequency domain resources may also be referred to as the interval between two time-frequency resources in the multiple time-frequency resources in the frequency domain.

[0012] In a possible implementation, the first frequency value includes: F*1200 kilo hertz (kHz), F*1.44 mega hertz (MHz), F*2.88 MHz, F*4.32 MHz, F*5.76 MHz, F*8.64 MHz, F*11.52 MHz, F*17.28 MHz, F*28.28 MHz, F*34.56 MHz, F*69.12 MHz, or F*138.24 MHz. F is a positive integer. The first frequency value is relatively matched with the synchronization grid. Therefore, the terminal device searches for the first common signal based on these first frequency values, which can reduce the difficulty of searching for the first common signal and improve the efficiency of searching for the first common signal.

[0013] In a possible implementation, the first number of resource blocks includes: F*12, where F is a positive integer. A resource block can be an RB or an RE. For another example, a resource block can also be a PRB. The number of resource blocks is used as the unit of the interval between two time-frequency resources in the frequency domain, and the first number of resource blocks is a multiple of 12. Since the size of the subband in the resource block is 12 subcarriers, this solution can be more compatible with existing standards. On the other hand, it can make it easier for the terminal device to determine the frequency domain position of another time-frequency resource based on the frequency domain position of one time-frequency resource.

[0014] In a possible implementation, M and / or N are associated with the carrier frequency. Thus, the values ​​of M and / or N can be set according to the actual situation of the carrier frequency, so that the candidate resources of the first common signal are more matched with the actually used carrier frequency.

[0015] In a possible implementation, a set of values ​​of M and N is associated with a carrier frequency. Thus, a set of values ​​of M and N may be pre-set, and then a set of associated values ​​may be selected according to the carrier frequency. In this solution, M and N are a set of values ​​pre-set, so this set of values ​​may be a more preferred configuration, and the carrier frequency may be directly associated with one or more sets of values ​​of M and N, thereby simplifying the selection process of M and N.

[0016] In a possible implementation, M and / or N are preset values. In this way, the network device does not need to indicate the value of M and / or N to the terminal device, thereby saving signaling overhead.

[0017] In the present application, M refers to the number of frequency domain resources occupied by multiple first common signals, and N refers to the number of time domain resources occupied by multiple first common signals. The meanings of M and N can also be found in the above content, and no further repetition is required.

[0018] In a possible implementation, M and / or N are determined based on at least one of the following: a sequence of a primary synchronization signal (PSS) in the first common signal; a sequence of a secondary synchronization signal (SSS) in the first common signal; cell identification information associated with the first common signal; a demodulation reference signal (DMRS) sequence in the first common signal and a physical broadcast channel (PBCH). In this way, the network device can indicate the value of M and / or N in an implicit manner, thereby saving signaling overhead.

[0019] In a possible implementation, M and / or N are determined based on at least one of the following: received information indicating M; or received information indicating N. In this way, the network device can indicate the value of M and / or N through signaling, thereby simplifying the process of the terminal device determining the value of M and / or N and simplifying the operation on the terminal device side.

[0020] In a possible implementation, a first common signal among the multiple first common signals corresponds to a time-frequency index. The time-frequency index indicates the order of the time-frequency resources of the first common signal among the multiple time-frequency resources occupied by the multiple first common signals. The multiple time-frequency resources are ordered in the time domain first and then in the frequency domain, which is more compatible with the prior art.

[0021] In a possible implementation, multiple time-frequency resources are sorted in a frequency domain first and then in a time domain. In this way, more implementation methods can be provided, thereby improving the flexibility of the solution.

[0022] In a possible implementation, the time-frequency index includes a first value and a second value. The first value indicates the order of the time domain resources of the first common signal among the N time domain resources, and the second value indicates the order of the frequency domain resources of the first common signal among the M frequency domain resources. Or it can also be understood as: the first value indicates the order of the time-frequency resources of the first common signal in the time domain among multiple time-frequency resources, and the second value indicates the order of the time-frequency resources of the first common signal in the frequency domain among multiple time-frequency resources. In this way, the terminal device can more quickly determine the order of the time-frequency resources of the first common signal in the time domain and the frequency domain, and this solution can simplify the operations on the terminal device side.

[0023] In a possible implementation, the terminal device receives the second common signal or the control channel corresponding to the second common signal according to the first common signal, and the second common signal includes system information. A first common signal can be associated with a second common signal. The terminal device can receive the second common signal associated with the first common signal on the corresponding resource according to the received first common signal.

[0024] In a possible implementation, the frequency domain resources of the first common signal and the frequency domain resources of the second common signal satisfy one of the following: the starting frequency points of the frequency domain resources of the first common signal and the frequency domain resources of the second common signal are the same; the center frequency points of the frequency domain resources of the first common signal and the frequency domain resources of the second common signal are the same; the frequency points of the frequency domain resources of the first common signal and the frequency domain resources of the second common signal are separated by a second value, and the second value is a preset value; the frequency points of the frequency domain resources of the first common signal and the frequency domain resources of the second common signal are separated by a third value, and the third value is associated with the bandwidth of the second common signal; the frequency points of the frequency domain resources of the first common signal and the frequency domain resources of the second common signal are separated by a fourth value, and the fourth value is associated with the difference between the bandwidth of the second common signal and the bandwidth of the first common signal; or, the frequency deviation between the frequency domain resources of the first common signal and the frequency domain resources of another first common signal is associated with the frequency deviation between the frequency domain resources of the first common signal and the frequency domain resources of the second common signal. Since multiple first common signals can be frequency-division multiplexed, the above settings can define the relationship between the frequency domain resources of the first common signal and the second common signal associated with the first common signal, and then enable the terminal device to determine the location of the frequency domain resources of the second common signal based on the relationship.

[0025] In a possible implementation manner, the time domain resource of the first common signal is the same as the time domain resource of the second common signal. In this way, the terminal device can acquire the second common signal more quickly.

[0026] In a possible implementation, the time domain resources of the second common signal are associated with at least one of: the time domain resources of the first common signal, the subcarrier spacing of the first common signal, the value of M, or the time-frequency index of the first common signal. In this way, since the above-mentioned time-frequency index will be affected by multiple frequency domain resources, the determination process of the time domain resources of the second common signal also combines the factor of the number of frequency domain resources, so that the determination process of the time domain resources of the second common signal can be more suitable for the frequency division multiplexing scheme of multiple time-frequency resources.

[0027] The time domain resource position of the second resource can be calculated by a formula. For detailed formula, please refer to the content in the subsequent specific embodiments, which will not be explained here.

[0028] In a possible implementation, two first common signals among the multiple first common signals satisfy at least one of the following: the two first common signals correspond to different radio frequency channels, the two first common signals correspond to different antenna ports, or the two first common signals correspond to different spatial relationships. Two first common signals among the multiple first common signals may be sent by a network device through two different radio frequency channels (or different antenna ports, or based on two different spatial relationships). In this way, a common signal can be sent through a dedicated radio frequency channel (or antenna port, or spatial relationship), and then the selected radio frequency channel (or antenna port, or spatial relationship) can be made to better match the sending of the common signal. In the embodiment of the present application, the spatial relationship corresponding to the two first common signals may also be replaced by the beam corresponding to the two first common signals.

[0029] In one possible implementation, a plurality of first common signals satisfy at least one of the following: a plurality of first common signals correspond to a first radio frequency channel, to a first antenna port, or to a first spatial relationship. A plurality of first common signals may be sent by a network device through a first radio frequency channel (or through a first antenna port). In another possible implementation, a second common signal is also sent through a first radio frequency channel (or a first antenna port, or based on a first spatial relationship) of a network device. In one possible implementation, a signal sent through a first radio frequency channel (or a first antenna port) belongs to a common signal. A data signal may be sent through other radio frequency channels other than the first radio frequency channel (or other than the first antenna port). It may also be understood that data signals and common signals are sent through different radio frequency channels (or antenna ports). In another possible implementation, a signal whose spatial relationship is a first spatial relationship belongs to a common signal, and it may also be understood that the spatial relationship associated with a data signal and a common signal is different. In this way, the transmission power of a common signal may be increased.

[0030] In a second aspect, an embodiment of the present application provides a wireless communication method, which is applicable to a network device. The network device may be a network device or a chip system inside the network device. In the present application, the method is described by taking the execution of the network device as an example.

[0031] The network device sends multiple first common signals. The multiple first common signals occupy M frequency domain resources, where M is an integer greater than 1, and one of the multiple first common signals occupies one frequency domain resource among the M frequency domain resources. The multiple first common signals are common signals belonging to the same serving cell, and the multiple first common signals belong to common signals within a common signal sending cycle.

[0032] Multiple first common signals can be sent by frequency division multiplexing, or by frequency division multiplexing and time division multiplexing. In this way, the flexibility of the network device in sending the first common signal can be improved. On the other hand, since multiple first common signals can occupy multiple frequency domain resources, the number of time domain resources occupied by the multiple first common signals can be reduced, thereby saving time domain resources and reducing energy consumption. For example, since multiple first common signals occupy fewer time domain resources, the network device sends multiple first common signals for a shorter period of time, and then the network device can extend the shutdown period, thereby reducing energy consumption. On the other hand, the time required for the terminal device to detect multiple first common signals is also reduced. This solution makes it possible for the terminal device to detect the first common signal more quickly, thereby reducing the energy consumption of the terminal device.

[0033] For the relevant contents of the first common signal and the resources occupied by the first common signal, reference may be made to the description in the aforementioned first aspect and possible implementations of the first aspect, and the description will not be repeated here.

[0034] In a possible implementation manner, the network device sends a second common signal or a control channel corresponding to the second common signal, and the second common signal includes system information.

[0035] For the relevant contents of the first common signal and the second common signal, reference may be made to the description in the aforementioned first aspect and possible implementations of the first aspect, and the description will not be repeated here.

[0036] In a third aspect, a communication device is provided, which may be the aforementioned terminal device or network device. The communication device may include a communication unit and a processing unit to perform any aspect of the above-mentioned first aspect to the second aspect, or to perform any possible implementation of the first aspect to the second aspect. The communication unit is used to perform functions related to sending and receiving. Optionally, the communication unit includes a receiving unit and a sending unit. In one design, the communication device is a communication chip, the processing unit may be one or more processors or processor cores, and the communication unit may be an input / output circuit or port of the communication chip.

[0037] In another design, the communication unit may be a transmitter and a receiver, or the communication unit may be a transmitter and a receiver.

[0038] Optionally, the communication device also includes various modules that can be used to execute any aspect of the first to second aspects above, or execute any possible implementation of the first to second aspects.

[0039] In a fourth aspect, a communication device is provided, which may be the aforementioned terminal device or network device. The communication device may include a processor and a memory to perform any aspect of the first to second aspects, or any possible implementation of the first to second aspects. Optionally, a transceiver is further included, the memory is used to store a computer program or instruction, and the processor is used to call and run the computer program or instruction from the memory, and when the processor executes the computer program or instruction in the memory, the communication device performs any aspect of the first to second aspects, or any possible implementation of the first to second aspects.

[0040] Optionally, there are one or more processors and one or more memories.

[0041] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0042] Optionally, the transceiver may include a transmitter (transmitter) and a receiver (receiver).

[0043] In a fifth aspect, a communication device is provided, which may be the aforementioned terminal device or network device. The communication device may include a processor to perform any aspect of the first aspect to the second aspect, or to perform any possible implementation of the first aspect to the second aspect. The processor is coupled to a memory. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0044] In one implementation, when the communication device is a terminal device or a network device, the communication interface may be a transceiver, or an input / output interface. Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0045] In another implementation, when the communication device is a chip or a chip system, the communication interface may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or the chip system, etc. The processor may also be embodied as a processing circuit or a logic circuit.

[0046] In a sixth aspect, a system is provided, the system comprising the above-mentioned terminal device.

[0047] In a possible implementation, the system may further include one or more network devices.

[0048] In the seventh aspect, a computer program product is provided, which includes: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute any one of the first to second aspects described above, or any possible implementation of the first to second aspects.

[0049] In an eighth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions). When the computer program is run on a computer, the computer executes any one of the first to second aspects above, or executes any possible implementation of the first to second aspects.

[0050] In the ninth aspect, a chip system is provided, which may include a processor. The processor is coupled to a memory and may be used to perform any of the first to second aspects described above, or to perform any possible implementation of the first to second aspects. Optionally, the chip system also includes a memory. The memory is used to store a computer program (also referred to as code, or instruction). The processor is used to call and run a computer program from the memory, so that a device equipped with the chip system performs any of the first to second aspects described above, or to perform any possible implementation of the first to second aspects.

[0051] In a tenth aspect, a processing device is provided, comprising: an interface circuit and a processing circuit. The interface circuit may include an input circuit and an output circuit. The processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that any aspect of the first aspect to the second aspect above, or any possible implementation method of executing the first aspect to the second aspect is implemented.

[0052] In the specific implementation process, the above-mentioned processing device can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. This application does not limit the specific implementation of the processor and various circuits.

[0053] In one implementation, when the communication device is a terminal device, a network device, or a positioning management device, the interface circuit may be a radio frequency processing chip in the terminal device, the network device, or the positioning management device, and the processing circuit may be a baseband processing chip in the terminal device, the network device, or the positioning management device.

[0054] In another implementation, the communication device may be a part of a terminal device, a network device or a positioning management device, such as an integrated circuit product such as a system chip or a communication chip. The interface circuit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or chip system. The processing circuit may be a logic circuit on the chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of the architecture of a communication system used in an embodiment of the present application;

[0056] Figure 2 A schematic diagram of a possible SSB transmission cycle provided in an embodiment of the present application;

[0057] Figure 3 A possible schematic diagram of the resource location of SSB in a 5G NR system provided in an embodiment of the present application;

[0058] Figure 4 A possible flow chart of a communication method provided for an application embodiment;

[0059] Figure 5 A schematic diagram of possible locations of time-frequency resources of a first common signal provided in an embodiment of the present application;

[0060] Figure 6 A possible example of a time-frequency index corresponding to the first common signal provided in an embodiment of the present application;

[0061] Figure 7 Another possible example of the time-frequency index corresponding to the first common signal provided in the embodiment of the present application;

[0062] Figure 8 Another possible example of the time-frequency index corresponding to the first common signal provided in the embodiment of the present application;

[0063] Fig. 9 A schematic diagram of the relationship between the resource locations of a first common signal and a second common signal provided in an embodiment of the present application;

[0064] Fig.10 A schematic diagram of the relationship between resource locations of a first common signal and a second common signal provided in another embodiment of the present application;

[0065] Fig.11 A possible structural diagram of a communication device provided in an embodiment of the present application;

[0066] Fig.12 A possible structural diagram of another communication device provided in an embodiment of the present application;

[0067] Fig.13 A possible structural diagram of another communication device provided in an embodiment of the present application;

[0068] Fig.14 A possible structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] The following is an introduction to the nouns and terms involved in the embodiments of the present application.

[0070] (1) Time and frequency resources.

[0071] The time-frequency resources involved in the embodiments of the present application may be replaced by resources. The time-frequency resources may include time domain resources and / or frequency domain resources.

[0072] (1.1) Time domain resources.

[0073] The time domain resources include at least one of a symbol, a slot, a mini-slot, a partial slot, a sub-frame, a radio frame, or a sensing slot.

[0074] In an embodiment of the present application, the time domain symbol may be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete Fourier transform spread OFDM (DFT-s-OFDM) symbol.

[0075] In the embodiment of the present application, a time domain resource can be understood as a time domain resource occupied by a first common signal. In the embodiment of the present application, a network device sends multiple first common signals through N time domain resources as an example, where N is a positive integer. A first common signal occupies one time domain resource among the N time domain resources.

[0076] A time domain resource may include at least one of the following: at least one symbol; at least one time slot; at least one mini-slot; at least one partial slot; at least one sub-frame; at least one radio frame; or at least one sensing slot.

[0077] (1.2) Frequency domain resources.

[0078] Frequency domain resources include resource elements (RE), resource blocks (RB), subchannels, resource pools, bandwidth, bandwidth part (BWP), carriers, channels, interlaces, etc.

[0079] In the embodiment of the present application, a frequency domain resource can be understood as a frequency domain resource occupied by a first common signal. In the embodiment of the present application, a network device sends multiple first common signals through M frequency domain resources as an example, where M can be a positive integer greater than 1. In some possible implementations, M can also be 1. For details, please refer to the description in the subsequent implementation. A first common signal occupies one frequency domain resource among the M frequency domain resources.

[0080] A frequency domain resource may include at least one of the following: at least one RE; at least one RB; at least one subchannel; at least one resource pool; at least one bandwidth; at least one BWP; at least one carrier; at least one channel; or at least one interlace.

[0081] (2)SSB.

[0082] The downlink synchronization channel and channel can be composed of multiple SSB sets. The SSB set contains one or more SSBs. An SSB contains at least one of PSS, SSS and PBCH. When the SSB contains PBCH, each physical resource block (PRB) where the PBCH is located also contains PBCH DMRS.

[0083] SSB can also be a signal used for initial access in the NR system. SSB can be used for cell search, cell synchronization, and sending broadcast information or system information, and can also be used for radio resource management (RRM) measurement and / or channel quality measurement.

[0084] In terms of time domain period, NR supports multiple SSB transmission periods. In the initial access phase, the terminal assumes that the SSB transmission period is 20ms, which is the duration of two radio frames. In order to improve coverage, the NR system introduces a beamforming mechanism for the common channel and achieves omnidirectional coverage by beam scanning and sending multiple SSBs.

[0085] Figure 2 A schematic diagram of a possible SSB transmission cycle provided by an embodiment of the present application is exemplarily shown, such as Figure 2 As shown, the transmission of the common signal is periodic, and there is a time window in the duration of each common signal transmission cycle. Exemplarily, the transmission cycle of the common signal is 20ms, and there is a time window in each 20ms. The time window is, for example, 5ms or at least one time slot, and the common signals in the common signal transmission cycle are all transmitted within this time window.

[0086] (3) Antenna port.

[0087] The antenna port is a logical concept, and there is no direct correspondence between an antenna port and a physical antenna. Antenna ports are usually associated with signals (such as reference signals), and their meaning can be understood as a transceiver interface on the channel that the signal (such as reference signal) passes through. For low frequencies, an antenna port may correspond to one or more antenna elements, which jointly send reference signals. The receiver can treat them as a whole without distinguishing these elements. For high-frequency systems, antenna ports may correspond to a spatial relationship (also called a beam). Similarly, the receiver only needs to regard this spatial relationship as corresponding to an interface, and does not need to distinguish each element.

[0088] (4)Spatial relation

[0089] In the embodiment of the present application, the spatial relationship between two signals (such as the spatial relationship between two first common signals involved later) may refer to the relationship between the two signals when the two signals propagate in space. The spatial relationship in the embodiment of the present application may also be replaced by other names, such as beam, beam direction, transmission direction, transmission beam direction, reception direction, reception beam direction, etc.

[0090] In the embodiment of the present application, the same spatial relationship between two signals may refer to the same or close directions of the two signals when the two signals propagate in space. In the embodiment of the present application, the spatial relationship of a signal may be associated with another signal (such as a reference signal). In the embodiment of the present application, the same spatial relationship between two signals may refer to: the reference signal associated with the spatial relationship of the two signals is the same. For example, the spatial relationship of the first common signal #1 is associated with the reference signal #1, and the spatial relationship of the first common signal #2 is associated with the reference signal #1. In this case, it can be said that the reference signal associated with the spatial relationship of the first common signal #1 and the first common signal #2 is the same, or it can be said that the spatial relationship of the first common signal #1 and the first common signal #2 is the same.

[0091] The spatial relationship association between two signals in the embodiments of the present application may also refer to the fact that the transmit beam or receive beam of one signal is spatially associated with the transmit beam or receive beam of another signal, for example, the transmit beam or receive beam of one signal has the same or close beam direction as that of the transmit beam or receive beam of another signal.

[0092] The spatial relationship in the embodiment of the present application can also be replaced by other names such as beam. A beam can be understood as a communication resource. A beam can be a wide beam, a narrow beam, or other types of beams. The technology for forming a beam can be a beamforming technology or other technical means. The beamforming technology can be specifically a digital beamforming technology, an analog beamforming technology, and a hybrid digital / analog beamforming technology. Different beams can be considered different resources. The same information or different information can be sent through different beams. Optionally, multiple beams with the same or similar communication characteristics can be regarded as a beam. One or more antenna ports can be included in a beam for transmitting data channels, control channels, and detection signals, etc. For example, a transmit beam can refer to the distribution of signal strength formed in different directions of space after the signal is transmitted by the antenna, and a receive beam can refer to the signal strength distribution of wireless signals received from the antenna in different directions of space. It can be understood that one or more antenna ports that form a beam can also be regarded as an antenna port set. The embodiment of the beam in the protocol can still be a spatial filter.

[0093] Figure 1 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The wireless access network 100 may include at least one wireless access network device (such as Figure 1 110a and 110b), and may further include at least one terminal (such as Figure 1 120a-120j in the figure). The terminal is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated on the same physical device, or part of the functions of the core network device and part of the functions of the wireless access network device can be integrated on one physical device. Terminals and wireless access network devices can be connected to each other by wired or wireless means. Figure 1 This is just a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices. Figure 1 Not drawn in.

[0094] The wireless access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a next generation base station in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a wireless fidelity (WiFi) system, etc.; it can also be a module or unit that completes part of the functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). The wireless access network equipment can be a macro base station (such as Figure 1 110a), or a micro base station or an indoor station (such as Figure 1 110b), may also be a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For ease of description, the following description takes a base station as an example of a wireless access network device.

[0095] The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0096] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons, and artificial satellites in the air. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0097] The roles of the base station and the terminal can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0098] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0099] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0100] In this application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0101] In the 5G NR communication system, for example, in the hybrid beamforming (HBF) architecture, data channels often use high-gain narrow beams to achieve better coverage and spectral efficiency. The cell common channel uses a slightly lower-gain wide beam to achieve wide coverage with lower overhead. The public signal carried on the cell common channel can only be sent through time division multiplexing (TDM), which can also be called a beam scanning transmission method. The following uses SSB as an example to illustrate a method for sending a public signal.

[0102] Figure 3 The following is a schematic diagram showing a possible resource location of SSB in a 5G NR system provided by an embodiment of the present application. Figure 3 , the network device can periodically send SSB. In one SSB period, the network device can send a set of SSB beams in TDM mode. The set of SSB beams is represented by an SSB index. For example, for an NR system deployed in the 3GHz to 6GHz frequency band, the set of SSB includes 8 SSB beams with SSB indexes #0, #1, ..., #7.

[0103] The time domain resources of the 8 SSBs are sent in a TDM manner, that is, the SSB is sent at a frequency point in a carrier or bandwidth part, and the SSB is not sent at other frequencies at the same time. For the time domain position, the set of SSBs can be located in the first half of a wireless frame, and the time domain position of each SSB is fixed. Figure 3 Taking 30KHz SCS as an example, the 8 SSBs are located in the first 4 time slots of the first half frame, and the specific symbol positions are also as follows Figure 3 The frequency domain position of each SSB in the 8 SSBs is relatively flexible and only needs to be on a predefined frequency grid.

[0104] It can be seen from the above examples that the current public signal transmission method is not flexible enough and can only be sent through time division multiplexing. This will cause the public signal to occupy more time domain resources, which is not conducive to energy saving. For example, since the public signal occupies more time domain resources, the network device also needs a longer time to send the public signal, which in turn leads to the network device The shutdown time is limited (such as in a low-load system), which in turn leads to low energy efficiency of the network device. For another example, since the public signal occupies more time domain resources, the terminal device also needs to detect the public signal within a longer time delay. It can be seen that this method is also not conducive to energy saving of the terminal device. On the other hand, sending public signals through time division multiplexing may cause the public signal to use a wide beam with medium and low gain for many times, reducing system performance.

[0105] In response to the above problems, an embodiment of the present application provides a possible implementation method, in which multiple first common signals can be sent through multiple time-frequency resources. Multiple time-frequency resources can correspond to multiple frequency domain resources. In other words, multiple first common signals can also be sent in a frequency division manner. In this way, the sending method of the first common signal can be more flexible. On the other hand, when multiple first common signals are sent in a frequency division manner, the number of time domain resources occupied by the multiple first common signals can be reduced, thereby saving time domain resources and then reducing energy consumption. On the other hand, since the time domain resources occupied by multiple first common signals are reduced, multiple first common signals can adopt high-gain narrow beams to achieve better coverage and spectral efficiency, thereby improving system performance.

[0106] based on Figure 1 The content shown and the other content mentioned above, Figure 4 The following is a possible flow chart of a communication method provided by an embodiment of the present application. Figure 4 It is described from the perspective of interaction between terminal devices and network devices. Figure 4 The terminal device involved in the above Figure 1 The terminal device in the system or the chip system inside the terminal device. Figure 4 The network device involved in the above Figure 1 The network equipment in the network (such as wireless access network equipment or wireless backhaul equipment, etc.) or the chip system inside the network equipment.

[0107] like Figure 4 As shown, the method includes step 401 and step 402. The method may or may not include step 403. Each step is introduced below in conjunction with the accompanying drawings.

[0108] Step 401: A network device sends a plurality of first common signals.

[0109] Step 402: The terminal device receives a first common signal.

[0110] The first common signal received by the terminal device is one of a plurality of first common signals sent by the network device.

[0111] In the embodiment of the present application, there are multiple ways to send two first common signals among multiple first common signals, for example, they can be sent in a time division multiplexing manner, they can also be sent in a frequency division multiplexing manner, or they can be sent in a frequency division multiplexing and time division multiplexing manner.

[0112] The network device can flexibly select the transmission mode for transmission. In one possible implementation, the network device can select the transmission mode based on the load. For example, when it is determined that the load in the system is large, multiple first common optical signals are sent in a time-division manner, which can facilitate the terminal device to quickly access the network. When the system load is small, multiple first common signals can be sent in a frequency-division manner, which can save energy consumption of the network device. In the embodiment of the present application, two first common signals among multiple first common signals are sent by frequency-division multiplexing, or two first common signals are sent by time-division multiplexing and frequency-division multiplexing as an example.

[0113] The first common signal includes: at least one of a synchronization signal, a broadcast channel, system information, or a paging message. In a possible implementation manner, the first common signal is an SSB.

[0114] The multiple first common signals sent by the network device in the embodiment of the present application belong to the common signals of the same service cell. In the embodiment of the present invention, the definitions of carrier and service cell are the same, and the two can be replaced by the same term in the following text. The sending of the first common signal in the embodiment of the present invention can be understood as being for a single carrier or a single service cell or a single bandwidth part (BWP). BWP is a subset of a service cell, and a service cell can include, for example, up to S BWPs, where S can be an integer, such as S=4. A terminal device can only transmit signals on an activated BWP at one time, for example, a terminal device activates one BWP at one time. In the embodiment of the present application, the transmission mode of multiple first common signals is relatively flexible, for example, it can be time division multiplexing or frequency division multiplexing, or it can be time division multiplexing and frequency division multiplexing. When there are two first common signals in multiple first common signals that are frequency-division multiplexed, in one possible example, the network device sends two first common signals (such as two SSBs) on at least two frequency points of a carrier or a BWP at the same time.

[0115] In the embodiment of the present application, the network device may periodically send the first common signal. In the embodiment of the present application, one cycle is used as an example for introduction, and the multiple first common signals involved in the embodiment of the present application belong to common signals within one common signal sending cycle.

[0116] Multiple first common signals are sent by a network device through multiple time-frequency resources. A time-frequency resource includes a time-frequency resource for sending a first common signal, and a time-frequency resource can also be understood as a time-frequency resource occupied by a first common signal. There is a frequency deviation between any two time-frequency resources among the multiple time-frequency resources in the frequency domain. The two time-frequency resources can be two adjacent time-frequency resources among the multiple time-frequency resources, or they can be non-adjacent time-frequency resources. The frequency deviation can be expressed by a frequency value or by the number of resource blocks. The following is introduced through Example 1 and Example 2 respectively.

[0117] Example 1: An interval in the frequency domain between two time-frequency resources among a plurality of time-frequency resources used to transmit a plurality of first common signals is a first frequency value.

[0118] In a possible implementation, multiple first common signals occupy M frequency domain resources, where M is an integer greater than 1, and one of the multiple first common signals occupies one frequency domain resource among the M frequency domain resources. An interval between two frequency domain resources among the M frequency domain resources (the two frequency domain resources may be two adjacent frequency domain resources among the M frequency domain resources, or two non-adjacent frequency domain resources among the M frequency domain resources) is a first frequency value.

[0119] In a possible implementation, the first frequency value includes one of: F*1200kHz, F*1.44MHz, F*2.88MHz, F*4.32MHz, F*5.76MHz, F*8.64MHz, F*11.52MHz, F*17.28MHz, F*28.28MHz, F*34.56MHz, F*69.12MHz, or F*138.24MHz. * represents multiplication, and F is a positive integer. The first frequency value is relatively matched with the synchronization grid. Therefore, the terminal device searches for the first common signal based on these first frequency values, which can reduce the difficulty of searching for the first common signal and improve the efficiency of searching for the first common signal.

[0120] Figure 5 A schematic diagram of possible locations of time-frequency resources of a first common signal provided in an embodiment of the present application is exemplified. Figure 5 Two first common signals that are adjacent (or non-adjacent) in the frequency domain at the same time are exemplarily shown. The frequency corresponding to the mth first common signal (which may be the center frequency or the starting frequency) is f_m, and the frequency corresponding to the (m+1)th first common signal (which may be the center frequency or the starting frequency) is f_(m+1). The frequency deviation (f_(m+1)-f_m) between the time-frequency resources corresponding to the two first common signals is the above-mentioned first frequency value.

[0121] In yet another possible implementation manner, the first frequency value is related to a bandwidth of the system information (or a bandwidth of the control channel resource CORESET).

[0122] For example, the first frequency value is the same as the bandwidth of the system information (or the bandwidth of the control channel resources CORESET), or the first frequency value is half of the bandwidth of the system information (or the bandwidth of the control channel resources CORESET), or the first frequency value is twice the bandwidth of the system information (or the bandwidth of the control channel resources CORESET).

[0123] In another possible implementation manner, the value of the first frequency value is related to a carrier frequency range (or frequency band).

[0124] For example, different carrier frequency ranges (or frequency bands) may correspond to different first frequency values. Or it can be understood that different carrier frequency ranges (or frequency bands) may correspond to different values ​​of the first frequency value. In this way, the value of the first frequency value can be set according to the actual situation of the carrier frequency range (or frequency band), so that the interval between the two time-frequency resources in the frequency domain is more matched with the actually used carrier frequency range (or frequency band).

[0125] Table 1 exemplarily shows a possible example of M and N corresponding to the carrier frequency range. As shown in Table 1, when the carrier frequency belongs to the frequency range 0-f0, the candidate values ​​of the first frequency value may be {F00, F01, ...}, and the first frequency value may be one of these candidate values. The meanings of other rows are similar and will not be repeated.

[0126] Table 1 A possible example of M and N corresponding to the carrier frequency range

[0127]

[0128] In one possible implementation, the first frequency value may have a candidate value set, and the first frequency value may be taken from the candidate value set. In one possible implementation, the values ​​in the candidate value set of the first frequency value may be related to the bandwidth, frequency band or carrier frequency range of the system information. For related content, please refer to the above description and will not be repeated here.

[0129] Example 2: An interval in the frequency domain between two time-frequency resources among a plurality of time-frequency resources used to transmit a plurality of first common signals is the number of first resource blocks.

[0130] In one possible implementation, the interval between two frequency domain resources among M frequency domain resources (the two frequency domain resources may be two adjacent frequency domain resources among the M frequency domain resources, or two non-adjacent frequency domain resources among the M frequency domain resources) is the first number of resource blocks.

[0131] The bandwidth and / or time domain resources (such as time slots, OFDM symbols) of a resource block (or a subcarrier corresponding to a resource block) may be determined according to the subcarrier spacing of a common signal. In an embodiment of the present application, a resource block may include time domain resources and frequency domain resources. The number of time domain resources included in a resource block may be preset, and the number of frequency domain resources included in a resource block may also be preset. For example, a resource block may be an RB or an RE. For another example, a resource block may also be a PRB.

[0132] In a possible implementation, the first number of resource blocks includes: F*12. F is a positive integer. The number of resource blocks is used as the unit of the interval between two time-frequency resources in the frequency domain, and the first number of resource blocks is a multiple of 12. Since the size of the subband in the resource block is 12 subcarriers, this solution can be more compatible with existing standards. On the other hand, it can make it easier for the terminal device to determine the frequency domain position of another time-frequency resource based on the frequency domain position of one time-frequency resource.

[0133] Multiple first common signals are sent by a network device through multiple time-frequency resources. Multiple time-frequency resources correspond to N time domain resources, and multiple time-frequency resources correspond to M frequency domain resources. It can also be understood that the time domain resources occupied by all resources in the multiple time-frequency resources are the N time domain resources, and the frequency domain resources occupied by all resources in the multiple time-frequency resources are the M frequency domain resources. N is a positive integer. M is a positive integer. M can be 1, or M can be an integer greater than 1. When M is 1, it can also be understood that the multiple first common signals are sent in a time division multiplexing manner. When M is greater than 1, two first common signals in the multiple first common signals are sent in frequency division multiplexing, or the two first common signals are sent in time division multiplexing and frequency division multiplexing. The network device can flexibly select the sending method of multiple first common signals.

[0134] In addition to the above-mentioned examples 1 and 2, there are other implementations for the network device to send the first common signal in the embodiments of the present application.

[0135] For example, in another possible implementation, if the network device needs to send multiple first common signals at two candidate frequency domain positions respectively, then for one time domain position (or for one time domain resource, or at the same time position), if the network device sends the first common signal at one of the candidate frequency domain positions, the network device needs to send the first common signal at another candidate frequency domain position (at the same time position). This implementation can improve the transmission efficiency of the common signal, simplify the signaling used to indicate the common signal transmission position, and reduce resource overhead.

[0136] In another possible implementation, if the network device needs to send multiple first common signals respectively at two candidate time domain positions, then for a frequency domain position (or for a frequency domain resource, or at the same frequency domain position), if the network device sends the first common signal at one of the candidate time domain positions, the network device needs to also send the first common signal at the other candidate time domain position (at the same time position).

[0137] The first common signal in the multiple first common signals in the embodiment of the present application corresponds to a time-frequency index. The time-frequency index in the embodiment of the present application can also be replaced by an index or an identifier, etc. The time-frequency index corresponding to the first common signal can indicate the time-frequency resource of the first common signal. The time-frequency index corresponding to the first common signal can also be understood as the index corresponding to the time-frequency resource of the first common signal.

[0138] There are many possible implementations of the time-frequency index corresponding to the first common signal, and several of them are exemplarily introduced below through implementation mode A1, implementation mode A2 and implementation mode A3.

[0139] In implementation A1, the time-frequency index corresponding to the first common signal indicates the order of the time-frequency resources of the first common signal among multiple time-frequency resources, and the multiple time-frequency resources are ordered in the time domain first and then in the frequency domain.

[0140] Figure 6 A possible example of the time-frequency index corresponding to the first common signal provided in the embodiment of the present application is exemplarily shown. Figure 6 , Figure 6 In the example, the first common signal is SSB. In actual application, the first common signal may also be other signals. The network device may periodically send the first common signal. Figure 6 Two transmission periods of the first common signal are exemplarily shown, namely the tth period of the first common signal and the (t+1)th period of the first common signal. For one transmission period of the first common signal, the multiple time-frequency resources used to send multiple first common signals within the transmission period may include N time domain resources and M frequency domain resources. The number of the multiple time-frequency resources is M*N, where * represents multiplication. M*N in the embodiment of the present application may also be expressed as MN or NM, and MN or NM appearing in other positions in the embodiment of the present application may also be understood as M*N.

[0141] like Figure 6 As shown, MN time-frequency resources are sorted in the time domain first and then in the frequency domain. The sequence number can be understood as the time-frequency index of the time-frequency resource, or the time-frequency index of the first common signal transmitted on the time-frequency resource. Figure 6In the example, the N time domain resources corresponding to the first frequency domain resource (or frequency position) have time-frequency indexes of the first common signal transmitted on each resource that are 0 to (N-1) in order in the time domain; thereafter, the N time domain resources corresponding to the second frequency domain resource (or frequency position) have time-frequency indexes of the first common signal transmitted on each resource that are N to (2N-1) in order in the time domain; and so on, until the N time domain resources corresponding to the (M-1)th frequency domain resource (or frequency position) have time-frequency indexes of the first common signal transmitted on each resource that are (M-1)N to (MN-1) in order in the time domain. For example Figure 6 As shown in , the time-frequency index of the first common signal is 0. Figure 6 In the sequence of time domain first and frequency domain second, the time-frequency index of the second common signal is 1. Figure 6 In the example, SSB#0 is represented as SSB#1. SSB#0 and SSB#1 have different time domain resources but the same frequency domain resources. Other time-frequency indexes are similar and will not be described in detail.

[0142] In this implementation A1, multiple time-frequency resources are sorted in the time domain first and then the frequency domain, and the time-frequency index of the first common signal transmitted on each time-frequency resource is set in sequence according to the sorting method. In this way, the indexing method of the first common signal of 5G (such as SSB) can be consistent on a single frequency, and then it can be better compatible with the existing technology.

[0143] In implementation A2, the time-frequency index corresponding to the first common signal indicates the order of the time-frequency resources of the first common signal among multiple time-frequency resources, and the multiple time-frequency resources are ordered in the frequency domain first and then in the time domain.

[0144] Figure 7 Another possible example of the time-frequency index corresponding to the first common signal provided in an embodiment of the present application is exemplified. Figure 7 and Figure 6 Similarly, related content can refer to each other without duplication. Figure 6 The difference is that Figure 7 The MN time-frequency resources are sorted in the frequency domain first and then in the time domain. The sequence number can be understood as the time-frequency index of the time-frequency resource, or the time-frequency index of the first public signal transmitted on the time-frequency resource. Figure 7In the figure, the M frequency domain resources corresponding to the first time domain resource (or time domain position) have time-frequency indexes of the first common signal transmitted on each resource from 0 to (M-1) in the order on the frequency domain; thereafter, the M frequency domain resources corresponding to the second time domain resource have time-frequency indexes of the first common signal transmitted on each resource from M to (2M--1) in the order on the frequency domain; and so on, until the M frequency domain resources corresponding to the (N-1)th time domain resource have time-frequency indexes of the first common signal transmitted on each resource from (N-1)M to (MN-1) in the order on the frequency domain. For example Figure 7 As shown in , the time-frequency index of the first common signal is 0. Figure 7 In the sequence of frequency domain first and time domain second, the time-frequency index of the second common signal is 1. Figure 7 In the example, SSB#0 is represented as SSB#1. SSB#0 and SSB#1 have different frequency domain resources but the same time domain resources. Other time-frequency indexes are similar and will not be described in detail.

[0145] In this implementation A2, multiple time-frequency resources are sorted in the frequency domain first and then in the time domain, and the time-frequency index of the first common signal transmitted on each time-frequency resource is set in sequence according to the sorting method. This implementation provides more options for setting the time-frequency index, thereby providing solution flexibility.

[0146] In implementation mode A3, the time-frequency index corresponding to the first common signal includes a first value and a second value. The first value indicates the order of the time-frequency resources of the first common signal in the time domain among multiple time-frequency resources. The second value indicates the order of the time-frequency resources of the first common signal in the frequency domain among multiple time-frequency resources.

[0147] It can also be understood that: the first value indicates the order of the time domain resources of the first common signal in the N time domain resources, and the second value indicates the order of the frequency domain resources of the first common signal in the M frequency domain resources.

[0148] Figure 8 Another possible example of the time-frequency index corresponding to the first common signal provided in the embodiment of the application is exemplarily shown. Figure 8 and Figure 6 Similarly, related content can refer to each other without duplication. Figure 6 The difference is that Figure 8 The time-frequency index of the MN time-frequency resources in MN includes two parameters, the first parameter is used to indicate the order of the time domain resource of the time-frequency resource in the N time domain resources, and the second parameter is used to indicate the order of the frequency domain of the time-frequency resource in the M frequency domain resources. Figure 8As shown, the first parameter in the time-frequency index of the N time domain resources corresponding to the first frequency domain resource (or frequency position) is the same, which is 0. The second parameter in the time-frequency index of each resource is 0 to N-1 in order in the time domain. Therefore, the time-frequency indexes of the N time-frequency resources corresponding to the first frequency domain resource are (0, 0) to (0, N-1). By analogy, the first parameter in the time-frequency index of the N time domain resources corresponding to the (M-1)th frequency domain resource (or frequency position) is the same, which is (M-1). The second parameter in the time-frequency index of each resource is 0 to N-1 in order in the time domain. Therefore, the time-frequency indexes of the N time-frequency resources corresponding to the first frequency domain resource are (M-1, 0) to (M-1, N-1). For example Figure 6 As shown in , SSB#(0,0) and SSB#(0,1) have the same frequency domain resources but different time domain resources. Other time-frequency indexes are similar and will not be described in detail.

[0149] In this implementation A3, the time-frequency index corresponding to the multiple time-frequency resources may include two parameters for indicating the order of the time-frequency resources in the time domain and the frequency domain, respectively. This implementation provides more options for the setting method of the time-frequency index, thereby providing scheme flexibility. In this scheme, the terminal device can more quickly determine the order of the time-frequency resources of the first common signal in the time domain and the frequency domain, and this scheme can simplify the operation on the terminal device side.

[0150] In another possible implementation, the maximum number of multiple first common signals sent by the network device may be less than MN, so the number of resources actually used by the multiple first common signals is also less than MN, for example, multiple first common signals use K resources. The K resources may be any K resources among the MN resources. In another possible implementation, in implementation A1 or implementation A2, the K resources may be resources among the MN resources with time-frequency indexes from 0 to (K-1), and K is a positive integer. In implementation A3, the K resources may be the first K resources among the MN resources sorted by time domain first and frequency domain second, or frequency domain first and time domain second.

[0151] In the embodiment of the present application, there may be multiple implementations of the value of M and / or the value of N. The following is an introduction through some examples.

[0152] Example B1, the value of M can be any one of {1, 2, 4, 8, 12}.

[0153] Example B2, the value of N can be any one of {1, 2, 4, 8, 12, 16, 24, 32, 48, 64}.

[0154] In example B3, M and N may be paired values, for example, the values ​​of M and N may be (1, 4), where M is 1 and N is 4. Similarly, the values ​​of M and N may be any of the following: (4, 1), (2, 2), (1, 8), (8, 1), (4, 2), (2, 4), (1, 16), (2, 8), (4, 4), (8, 2), (1, 64), (2, 32), (4, 16), or (8, 8).

[0155] Example B4, M and / or N are associated with a carrier frequency.

[0156] In example B4, the value of M and the value of N can be taken separately. In one possible implementation, the value of M can be associated with the carrier frequency, for example, different carrier frequencies may correspond to different values ​​of M. In another possible implementation, the value of N can be associated with the carrier frequency, for example, different carrier frequencies may correspond to different values ​​of N. In this way, the value of M and / or N can be set according to the actual situation of the carrier frequency, so that the candidate resources of the first common signal are more matched with the carrier frequency actually used.

[0157] Table 2 exemplarily shows a possible example of M and N corresponding to the carrier frequency. As shown in Table 2, when the carrier frequency belongs to the frequency range 0-f0, the candidate value of M may be {M00, M01, ...}, and M may be one of these candidate values. When the carrier frequency belongs to the carrier frequency range 0-f0, the candidate value of N may be {N00, N01, ...}, and N may be one of these candidate values. The meanings of other rows are similar and will not be repeated.

[0158] Table 2 A possible example of M and N corresponding to the carrier frequency

[0159]

[0160] Table 3 illustrates a possible example of M and N corresponding to the carrier frequency. As shown in Table 3, when the carrier frequency belongs to the frequency range of 0-3000MHz, the candidate values ​​of M may be {1,2,4}, and M may be one of these candidate values. When the carrier frequency belongs to the carrier frequency range of 0-3000MHz, the candidate values ​​of N may be {1,2,4}, and N may be one of these candidate values. The meanings of other rows are similar and will not be repeated.

[0161] Table 3 A possible example of M and N corresponding to the carrier frequency

[0162] Carrier frequency range Candidate values ​​for M Candidate values ​​for N 0–3000MHz {1,2,4} {1,2,4} 3000–7.125MHz {1,2,4,6,8} {1,2,4,6,8} 7.125–24250MHz {1,2,4,6,8} {1,2,4,8,16,24,32} 24250–100000MHz {1,2,4,6,8} {8,16,24,32,48,64}

[0163] All tables in the embodiments of the present application are examples, and do not limit the number of rows, the number of columns, or the specific values ​​in the tables. In practical applications, any row or column in the table can be retained or deleted, or the tables can be arbitrarily recombined to form a new embodiment.

[0164] Example B5, a set of values ​​for M and N is associated with a carrier frequency.

[0165] In example B5, the value of M and the value of N are paired values, which can also be understood as a set of M and N values ​​associated with the carrier frequency. A set of M and N values ​​in the embodiment of the present application can also be expressed as (M, N), such as the subsequent (M00, N00) can be understood as the value of M is M00, and the value of N is N00. In this scheme, a set of M and N values ​​can be set in advance, and then a set of set associated values ​​is selected according to the carrier frequency. In this scheme, M and N are a set of values ​​set in advance, so this set of values ​​can be a more preferred configuration. In addition, the carrier frequency can be directly associated with one or more sets of M and N values, thereby simplifying the selection process of M and N.

[0166] Table 4 exemplifies a possible example of M and N corresponding to the carrier frequency. As shown in Table 4, when the carrier frequency belongs to the frequency range 0-f0, the paired candidate values ​​of M and N may be {(M00, N00), (M01, N01), ...}. The paired values ​​of M and N may be one of these paired candidate values. The meanings of other rows are similar and will not be repeated.

[0167] Table 4 A possible example of M and N corresponding to the carrier frequency

[0168]

[0169]

[0170] Table 5 illustrates a possible example of M and N corresponding to the carrier frequency. As shown in Table 5, when the carrier frequency belongs to the frequency range of 0-3000MHz, the paired candidate values ​​of M and N may be {(1,4), (4,1), (2,2)}. The paired values ​​of M and N may be one of these paired candidate values, such as M is 1 and N is 4; for another example, M is 4 and N is 1. The meanings of other rows are similar and will not be repeated.

[0171] Table 5 A possible example of M and N corresponding to the carrier frequency

[0172] Carrier frequency range Candidate values ​​for M and N 0–3000MHz {(1,4),(4,1),(2,2)} 3000–7.125MHz {(1,8),(8,1),(4,2),(2,4)} 7.125–24250MHz {(1,16),(2,8),(4,4),(8,2)} 24250–100000MHz {(1,64),(2,32),(4,16),(8,8)}

[0173] In another possible implementation, the number of paired candidate values ​​corresponding to different carrier frequency ranges may be the same or different. For example, the number of paired candidate values ​​of M and N corresponding to the first carrier frequency range (such as 0-f0) is 3, and the number of paired candidate values ​​of M and N corresponding to the second carrier frequency range (such as f0-f1) is 4.

[0174] In a possible implementation, the terminal device may obtain the values ​​of M and N. There are multiple implementations, and the following describes several implementations of the terminal device obtaining M and N by way of example through implementation C1, implementation C2, and implementation C3. In implementation C1, the values ​​of M and / or N may be preset values. In implementations C2 and C3, the network device may indicate the values ​​of M and / or N to the terminal device, with the difference being that in implementation C2, the network device indicates the values ​​of M and / or N in an explicit manner, and in implementation C3, the network device indicates the values ​​of M and / or N in an implicit manner.

[0175] In implementation C1, the value of M and / or N may be a preset value.

[0176] In implementation C1, the value of M and / or the value of N may be preconfigured. In this way, the network device may not need to indicate the value of M and / or N to the terminal device, thereby saving signaling overhead.

[0177] In another possible implementation, the network device may pre-configure the association between the values ​​of M and / or N and the carrier frequency range in advance, and the terminal device determines the corresponding values ​​of M and / or N according to the used carrier frequency range and the association. When a carrier frequency range corresponds to multiple candidate values ​​of M, a candidate value may be selected as the value of M according to a pre-agreed rule (such as a minimum value). Similarly, when a carrier frequency range corresponds to multiple candidate values ​​of N, a candidate value may be selected as the value of M according to a pre-agreed rule (such as a minimum value).

[0178] In implementation C2, the network device sends information indicating M to the terminal device, and / or the network device may send information indicating N to the terminal device.

[0179] Correspondingly, the terminal device may receive information indicating M and / or information indicating N. The information indicating M and the information indicating N may be the same or different, and may be carried in the same or different signaling. In this way, the network device may indicate the value of M and / or N through signaling, thereby simplifying the process of the terminal device determining the value of M and / or N, and simplifying the operation on the terminal device side.

[0180] In implementation C2, the network device may indicate the value of M and / or N to the terminal device through some signaling or signals, such as system information, synchronization signal, or demodulation reference signal.

[0181] In implementation C3, the network device indicates the value of M and / or N to the terminal device in an implicit manner.

[0182] In implementation C3, the network device may indicate the value of M and / or N through some existing information. In this way, the network device may indicate the value of M and / or N in an implicit manner, thereby saving signaling overhead. For example, the value of M and / or N may be determined by at least one of the following information C3.1, information C3.2, information C3.3, or information C3.4.

[0183] Information C3.1, cell identification information associated with the first public signal.

[0184] The cell identity information is, for example, a physical-layer cell identity.

[0185] In a possible implementation, the network device may pre-configure the association between the values ​​of M and / or N and the cell identification information, and the terminal device determines the corresponding values ​​of M and / or N based on the current cell identification information and the association. When a cell identification information corresponds to multiple candidate values ​​of M, a candidate value may be selected as the value of M according to a pre-agreed rule (such as a minimum value). Similarly, when a cell identification information corresponds to multiple candidate values ​​of N, a candidate value may be selected as the value of M according to a pre-agreed rule (such as a minimum value).

[0186] Table 6 illustrates a possible example of M and N corresponding to the cell identification information. As shown in Table 6, when the cell identification information belongs to 0-v0, the candidate values ​​of M may be {M00, M01, ...}, and M may be one of these candidate values. When the cell identification information belongs to 0-v0, the candidate values ​​of N may be {N00, N01, ...}, and N may be one of these candidate values. In a possible embodiment, v0 may be 336 and v1 may be 672. The meanings of other rows are similar and will not be repeated.

[0187] Table 6 A possible example of M and N corresponding to cell identification information

[0188] Cell identification information Candidate values ​​for M Candidate values ​​for N 0–v0 {M00,M01,…} {N00,N01,…} v0–v1 {M10,M11,…} {N10,N11,…} v1–v2 {M20,M21,…} {N20,N21,…} …… …… ……

[0189] Table 7 exemplifies a possible example of M and N corresponding to the cell identification information. As shown in Table 7, when the cell identification information belongs to 0–v0-1, the paired candidate values ​​of M and N may be {(M00, N00), (M01, N01), …}. The paired values ​​of M and N may be one of these paired candidate values. The meanings of other rows are similar and will not be repeated.

[0190] Table 7 A possible example of M and N corresponding to cell identification information

[0191] Cell identification information Candidate values ​​for M and N 0–v0-1 {(M00,N00),(M01,N01),…} v0–v1-1 {(M10,N10),(M11,N11),…} v1–v2 {(M20,N20),(M21,N21),…} …… ……

[0192] Information C3.2, sequence of SSS in the first common signal.

[0193] In a possible implementation, the network device may pre-configure the association between the values ​​of M and / or N and the sequence of SSS in advance, and the terminal device determines the corresponding values ​​of M and / or N according to the current sequence of SSS and the association. For example, when the cell identification information belongs to v0-v1, the candidate values ​​of M may be {M10, M11, ...}, and M may be one of these candidate values. When the cell identification information belongs to v0-v1, the candidate values ​​of N may be {N10, N11, ...}. In a possible implementation, v0 may be 112, and v1 may be 224. The way in which the network device implicitly indicates the values ​​of M and / or N through information C3.2 is similar to the way in which the aforementioned network device implicitly indicates the values ​​of M and / or N through information C3.1, and will not be repeated.

[0194] Information C3.3, sequence of PSS in the first public signal.

[0195] In a possible implementation, the network device may pre-configure the association between the values ​​of M and / or N and the sequence of the PSS in advance, and the terminal device determines the corresponding values ​​of M and / or N according to the current sequence of the PSS and the association. The way in which the network device implicitly indicates the values ​​of M and / or N through information C3.3 is similar to the way in which the network device implicitly indicates the values ​​of M and / or N through information C3.1, and will not be repeated.

[0196] Information C3.4, DMRS sequence in the PBCH of the first public signal.

[0197] In a possible implementation, the network device may pre-configure the association between the values ​​of M and / or N and the DMRS sequence in the PBCH, and the terminal device determines the corresponding values ​​of M and / or N according to the DMRS sequence in the current PBCH and the association. The way in which the network device implicitly indicates the values ​​of M and / or N through information C3.4 is similar to the way in which the network device implicitly indicates the values ​​of M and / or N through information C3.1, and will not be repeated.

[0198] In another possible implementation, the network device determines a transmission method of multiple first common signals, and can indicate the transmission method to the terminal device. Several possible methods are exemplarily introduced below through Example 1, Example 2 and Example 3.

[0199] In example 1, the network device may implicitly indicate to the terminal device the sending method of the plurality of first common signals by indicating the value of M and / or N to the terminal device.

[0200] For example, when the network device indicates that the value of M is 1, the terminal device can determine that the multiple first common signals are sent by time division multiplexing. For another example, when the network device indicates that the value of N is 1, the terminal device can determine that the multiple first common signals are sent by frequency division multiplexing. For another example, when the network device indicates that M is greater than 1 and N is greater than 1, the terminal device can determine that the multiple first common signals are sent by frequency division multiplexing and time division multiplexing.

[0201] Example 2: The network device implicitly indicates to the terminal device the sending method of multiple first common signals through at least one of the PSS sequence and / or the SSS sequence.

[0202] The terminal device can pre-acquire the association between at least one of the PSS sequence and / or SSS sequence and the sending method of multiple first common signals, and then determine the sending method of multiple first common signals based on at least one of the received PSS sequence and / or SSS sequence and the association.

[0203] For example, when the PSS sequence belongs to 0-336, the terminal device can determine that multiple first common signals are sent by frequency division multiplexing. For another example, when the PSS sequence belongs to 336-771, the terminal device can determine that multiple first common signals are sent by frequency division multiplexing and time division multiplexing. For another example, when the PSS sequence does not belong to 0-771, the terminal device can determine that multiple first common signals are sent by time division multiplexing.

[0204] Example 3: The network device indicates the sending mode of multiple first common signals through the PBCH DMRS.

[0205] In this example, the terminal device can determine the sending method of multiple first common signals through the information carried in the received PBCH DMRS.

[0206] In a possible implementation, the network device periodically broadcasts multiple first common signals (such as SSB). For example, the period length is 20ms, and the time length occupied by multiple first common signals (such as SSB) in one period is 4 OFDM symbols. The protocol stipulates that the maximum number of first common signals (such as SSB) that can be preset is L max , where L max =4, 8, 10, 20, 64, and the corresponding candidate positions. In practice, the number of first public signals (such as SSB) transmitted by the network does not exceed L max The protocol predefines L max The time position of the first common signal (such as SSB). In a period (or a transmission period of the first common signal), the starting OFDM symbol position of the nth first common signal (such as SSB) has the following possible situations (where n is also called the time index of the first common signal (such as SSB), and the time index can indicate the time domain resource of the first common signal).

[0207] Example 1: {2,8}+14·n. Where n=0,1; or n=0,1,2,3; or n=0,1,2,3,4; or n=0,1,2,3,4,5,6,7,8,9.

[0208] Example 2: {4,8,16,20}+28·n. Where n=0,1; or n=0,1,2,3; or n=0,1,2,3,4,5,6,7,8,9; or n=0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18.

[0209] Example 3: {8, 12, 16, 20, 32, 36, 40, 44} + 56·n, where n = 0, 1, 2, 3, 5, 6, 7, 8.

[0210] Example 4: {2,9}+14·n. Where n=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30.

[0211] Step 403: The network device sends a second common signal.

[0212] Correspondingly, the terminal device receives the second common signal.

[0213] In an embodiment of the present application, the network device may send multiple second common signals. The second common signal received by the terminal device belongs to one of the multiple second common signals sent by the network device. A first common signal may be associated with a second common signal. The terminal device may receive the second common signal or a control channel corresponding to the second common signal according to the first common signal. The second common signal includes system information.

[0214] For example, the second common signal may include at least one of system information block (SI), downlink control information (DCI) or control resource set (CORESET) corresponding to the first common signal.

[0215] The control channel corresponding to the second common signal may include, for example, a physical downlink control channel (physical downlink control channel, PDCCH) and / or a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).

[0216] In one possible implementation, the second common signal includes a system information block (SIB). For example, it includes SIB1. SIB1 can carry information such as random access configuration information, message 2 / message 4, PDCCH search space (search space 1), etc., for example, necessary system information other than the system information in the MIB, including RACH configuration, time division duplexing (TDD) frame structure configuration, etc.

[0217] In an embodiment of the present application, after the terminal device obtains the second common signal, the terminal can detect the system paging message, or the terminal sends a random access to establish a radio resource control (RRC) connection with the base station. After the RRC connection is successfully established, the terminal and the base station can perform normal data transmission.

[0218] In the embodiment of the present application, there are multiple ways to send two second common signals among multiple second common signals, for example, they can be sent in a time division multiplexing manner, they can also be sent in a frequency division multiplexing manner, or they can be sent in a frequency division multiplexing and time division multiplexing manner. Multiple second common signals are sent by a network device through multiple time-frequency resources, and there is a frequency deviation between any two time-frequency resources among the multiple time-frequency resources in the frequency domain. The two time-frequency resources can be two adjacent time-frequency resources among the multiple time-frequency resources, or they can be non-adjacent time-frequency resources. The frequency deviation can be expressed by a frequency value or by the number of resource blocks. The following is introduced through Example 1 and Example 2 respectively.

[0219] Example 1: An interval in the frequency domain between two time-frequency resources among a plurality of time-frequency resources used to transmit a plurality of second common signals is a second frequency value.

[0220] In a possible implementation, the second frequency value includes: one of F*1200kHz, F*1.44MHz, F*2.88MHz, F*4.32MHz, F*5.76MHz, F*8.64MHz, F*11.52MHz, F*17.28MHz, F*28.28MHz, F*34.56MHz, F*69.12MHz, or F*138.24MHz. * represents multiplication, and F is a positive integer. In an embodiment of the present application, a plurality of second common signals are sent on a plurality of time-frequency resources, and the interval in the frequency domain between two time-frequency resources of the plurality of time-frequency resources is a second frequency value, and the second frequency value is more matched with the synchronization grid. Therefore, the terminal device searches for the second common signal based on these second frequency values, which can reduce the difficulty of searching for the second common signal and improve the efficiency of searching for the second common signal.

[0221] For example, two second common signals that are adjacent (or non-adjacent) in the frequency domain at the same time. The frequency corresponding to the m'th second common signal (which may be the center frequency or the starting frequency) is f_m', and the frequency corresponding to the (m'+1)th second common signal (which may be the center frequency or the starting frequency) is f_(m'+1). The frequency deviation (f_(m'+1)-f_m') between the time-frequency resources corresponding to the two second common signals is the above-mentioned second frequency value.

[0222] In yet another possible implementation manner, the second frequency value is related to a bandwidth of the system information (or a bandwidth of the control channel resource CORESET).

[0223] For example, the second frequency value is the same as the bandwidth of the system information (or the bandwidth of the control channel resources CORESET), or the second frequency value is half of the bandwidth of the system information (or the bandwidth of the control channel resources CORESET), or the second frequency value is twice the bandwidth of the system information (or the bandwidth of the control channel resources CORESET).

[0224] In another possible implementation manner, the value of the second frequency value is related to a carrier frequency range (or frequency band).

[0225] For example, different carrier frequency ranges (or frequency bands) may correspond to different second frequency values. Or it can be understood that different carrier frequency ranges (or frequency bands) may correspond to different values ​​of the second frequency value. In this way, the value of the second frequency value can be set according to the actual situation of the carrier frequency range (or frequency band), so that the interval between the two time-frequency resources in the frequency domain is more matched with the actually used carrier frequency range (or frequency band).

[0226] In one possible implementation, the second frequency value may have a candidate value set, and the second frequency value may be selected from the candidate value set. In one possible implementation, the values ​​in the candidate value set of the second frequency value may be related to the bandwidth, frequency band or carrier frequency range of the system information. For related content, please refer to the above description and will not be repeated here.

[0227] Example 2: An interval in the frequency domain between two time-frequency resources among a plurality of time-frequency resources used to transmit a plurality of second common signals is the number of second resource blocks.

[0228] In a possible implementation, the second number of resource blocks includes: F*12. F is a positive integer. The number of resource blocks is used as the unit of the interval between two time-frequency resources in the frequency domain, and the second number of resource blocks is a multiple of 12. Since the size of the subband in the resource block is 12 subcarriers, this solution can be more compatible with existing standards. On the other hand, it can make it easier for the terminal device to determine the frequency domain position of another time-frequency resource based on the frequency domain position of one time-frequency resource. For related content, please refer to the related description of the first number of resource blocks mentioned above, which is similar and will not be repeated here.

[0229] In step 403, the terminal device may determine, according to the received first common signal, the time-frequency resource of the second common signal associated with the first common signal.

[0230] In a possible implementation manner, the relationship between the frequency domain resources of the first common signal and the frequency domain resources of the second common signal may be as shown in the following implementation manners D1, D2, D3, D4, D5, and D6. The terminal device may determine the frequency domain resources of the second common signal based on the frequency domain resources of the first common signal and the relationship between the frequency domain resources of the first common signal and the frequency domain resources of the second common signal.

[0231] In implementation mode D1, the frequency domain resources of the first common signal and the frequency domain resources of the second common signal have the same starting frequency point and / or center frequency point.

[0232] In implementation mode D1, in a possible implementation mode, the frequency domain resource of the first common signal and the frequency domain resource of the second common signal are the same.

[0233] Fig. 9 The following is a schematic diagram showing the relationship between the resource locations of a first common signal and a second common signal provided in an embodiment of the present application. Fig. 9 In the description, an example is given in which the first common signal is SSB and the second common signal is SI. Fig. 9 The two first common signals shown are SSB#m+1 and SSB#m. The SI associated with SSB#m is SI#m, and the SI associated with SSB#m+1 is SI#m+1. The frequency deviation between the frequency point (starting frequency point or center frequency point) of SSB#m and the frequency point (starting frequency point or center frequency point) of SI#m is represented as offset#m. Fig. 9 In the figure, the frequency deviation between the frequency point (starting frequency point or center frequency point) of SSB#m+1 and the frequency point (starting frequency point or center frequency point) of SI#m+1 is represented as offset#m+1.

[0234] In implementation D1, the frequency domain resources of the first common signal and the frequency domain resources of the second common signal have the same starting frequency and / or the same center frequency. For example, offset#m is 0, in which case the starting frequency of SSB#m is the same as that of SI#m.

[0235] Through the above implementation, the bandwidths of the first common signal and the second common signal can be aligned, thereby simplifying the process of the terminal device receiving the first common signal and the second common signal.

[0236] In implementation mode D2, the frequency points of the frequency domain resources of the first common signal and the second common signal are separated by a second value, and the second value is a preset value.

[0237] In another possible implementation manner, the frequency deviation between the frequency points of any first common signal and the second common signal corresponding to the first common signal is a preset value. Fig. 9Here, offset#m+1 is equal to offset#m, and both are preset values.

[0238] In another possible implementation manner, the bandwidths of the two second common signals may be the same, for example, the bandwidths of SI#m+1 and SI#m may be the same.

[0239] In implementation mode D3, the frequency points (starting frequency points or center frequency points) of the frequency domain resources of the first common signal and the second common signal are separated by a third value, and the third value is associated with the bandwidth of the second common signal.

[0240] For example, the third value is half or an integer multiple of the bandwidth of the second common signal.

[0241] In implementation D4, the frequency points of the frequency domain resources of the first common signal and the frequency points of the frequency domain resources of the second common signal are separated by a fourth value, and the fourth value is associated with the difference between the bandwidth of the second common signal and the bandwidth of the first common signal.

[0242] For example, the fourth value is half or an integer multiple of the difference between the bandwidth of the second common signal and the bandwidth of the first common signal.

[0243] In implementation mode D5, a frequency deviation between a frequency domain resource of a first common signal and a frequency domain resource of another first common signal is associated with a frequency deviation between a frequency domain resource of the first common signal and a frequency domain resource of a second common signal.

[0244] by Fig. 9 For example, the frequency deviation between the frequency points (starting frequency point or center frequency point) of SSB#m and SSB#m+1 is associated with the frequency deviation (offset#m) between the frequency points (starting frequency point or center frequency point) of SSB#m and SI#m.

[0245] In implementation mode D6, the frequency domain resources of the first common signal and the frequency domain resources of the second common signal satisfy certain rules.

[0246] In a possible implementation manner, the frequency domain resource of the first common signal and the frequency point (starting frequency point or center frequency point) of the second common signal satisfy a certain rule.

[0247] For example, the number M of frequency domain resources in multiple time-frequency resources used to transmit the first common signal is different from the number M' of frequency domain resources in multiple resources used to transmit multiple second common signals, for example, M is 4 and M' is 2. In this case, the relationship between the M frequency domain resources used to transmit the first common signal and the M' frequency domain resources used to transmit the second common signal can be established through certain rules or formulas. For example, a rule can be set: the M frequency domain resources used to transmit the first common signal are divided into M' groups, and the M' group of frequency domain resource groups corresponds one-to-one to the M' frequency domain resources used to transmit the second common signal. The number of frequency domain resources in any two frequency domain resource groups in the M' group of frequency domain resource groups may be the same or different. For example, when M can divide M', k0 is the quotient of M and M', then the continuous k0 resources in the M frequency domain resources used to transmit the first common signal can be divided into a group of resource groups, thereby obtaining M' group of frequency domain resource groups. There are many ways to divide the frequency domain resource groups, which are not limited in the embodiments of the present application.

[0248] Fig.10 A schematic diagram of the relationship between resource locations of a first common signal and a second common signal provided in another embodiment of the present application. Fig.10 Take the example that the number of frequency domain resources M used to transmit the first common signal is 4, the number of frequency domain resources M' used to transmit the second common signal is 2, the first common signal is SSB, and the second common signal is SI. Fig.10 In the example shown, a first common signal corresponding to two consecutive frequency resources in the M frequency domain resources for transmitting a first common signal is associated with a second common signal in the M' frequency domain resources for transmitting a second common signal. Fig.10 The SSBs corresponding to the first two frequency domain resources among the M frequency domain resources (i.e., SSB#0, SSB#1, ... SSB#N-1, SSB#N, SSB#1+N ... SSB#2N-1), the frequency domain positions of the SIs associated with these SSBs are: the first frequency domain resource among the M' frequency domain resources, that is, the SIs associated with these SSBs are SI#0, SSB#1, ... SI#N-1). For another example, for Fig.10 The SSBs corresponding to the third and fourth frequency domain resources among the M frequency domain resources (i.e., SSB#2N, SSB#1+2N, ... SSB#3N-1, SSB#3N, SSB#1+3N ... SSB#4N-1), the frequency domain positions of the SIs associated with these SSBs are: the second frequency domain resource among the M' frequency domain resources, i.e., the SIs associated with these SSBs are SI#2N, SSB#2N+1, ... SI#4N-1). That is, in Fig.10In the example shown, the first common signals corresponding to every k0 consecutive (k0=M / M'=2) frequency domain resources among the M frequency domain resources correspond to one group, and the first common signals corresponding to the m'th group of frequency domain resources respectively correspond to the second common signals corresponding to the m'th frequency domain resource among the M' frequency domain resources.

[0249] M and N involved in all the figures of the embodiments of the present application may respectively correspond to the maximum candidate values ​​of the frequency domain number and the time domain number in the candidate resources of the first common signal, and M' and N' may respectively correspond to the maximum candidate values ​​of the frequency domain number and the time domain number in the candidate resources of the second common signal. In practical applications, for each frequency domain resource used to transmit the first common signal, the number of first common signals actually sent on the frequency domain resource can be adjusted according to actual needs. Alternatively, for each time domain resource used to transmit the first common signal, the number of first common signals actually sent can be adjusted according to actual needs. For each frequency domain resource used to transmit the second common signal, the number of second common signals actually sent on the frequency domain resource can be adjusted according to actual needs; or, for each time domain resource used to transmit the second common signal, the number of second common signals actually sent can be adjusted according to actual needs.

[0250] To give another example, the number M of frequency domain resources in multiple time-frequency resources used to transmit the first common signal is different from the number M' of frequency domain resources in multiple resources used to transmit multiple second common signals. In this case, the relationship between the M frequency domain resources used to transmit the first common signal and the M' frequency domain resources used to transmit the second common signal can be established by a formula. For example, the formula can be set: k2=k1%M', where k1 is the sequence number of the frequency domain resource used to transmit the first common signal in the M frequency domain resources, k2 is the sequence number of the frequency domain resource corresponding to the frequency domain resource k1 for transmitting the second common signal in the M' frequency domain resources, % represents the remainder, and M' is the number of frequency domain resources used to transmit the second common signal. The sequence number of the frequency domain resources in the M frequency domain resources can represent the order, and can be taken from 0. The sequence number of the frequency domain resources in the M' frequency domain resources can represent the order, and can be taken from 0.

[0251] In another possible implementation, the number M of frequency domain resources in multiple time-frequency resources for transmitting the first common signal may be different from the number M' of frequency domain resources in multiple resources for transmitting multiple second common signals. M' is a positive integer. Alternatively, the number N of time domain resources in multiple time-frequency resources for transmitting the first common signal may be different from the number N' of time domain resources in multiple resources for transmitting multiple second common signals. N' is a positive integer. However, the total number M*N of resources in multiple time-frequency resources for transmitting the first common signal is equal to the total number M'*N' of resources in multiple resources for transmitting multiple second common signals. The * in the embodiment of the present application represents multiplication. In this case, a correspondence between multiple time-frequency resources for transmitting the first common signal and multiple resources for transmitting multiple second common signals can be established by certain rules (or formulas), and the two can correspond one to one.

[0252] Since multiple first common signals can be frequency-division multiplexed, through any of the above-mentioned implementation modes, the terminal device can determine the relationship between the frequency domain resources of the first common signal and the second common signal associated with the first common signal, and then the terminal device can determine the position of the frequency domain resources of the second common signal based on the relationship.

[0253] In a possible implementation manner, there may also be an association relationship between the time domain resources of the first common signal and the time domain resources of the second common signal, for example, as shown in the following implementation manners E1 and E2.

[0254] In implementation mode E1, the time domain resource of the first common signal is the same as the time domain resource of the second common signal. In this way, the terminal device can obtain the second common signal more quickly.

[0255] In implementation mode E2, the time domain resources of the second common signal are associated with at least one of: the time domain resources of the first common signal, the subcarrier spacing of the first common signal, the number of frequency domain resources in multiple time-frequency resources used to transmit the first common signal, or the time-frequency index of the first common signal. In this way, since the above-mentioned time-frequency index will be affected by multiple frequency domain resources, the process of determining the time domain resources of the second common signal also combines the factor of the number of frequency domain resources in multiple time-frequency resources used to transmit the first common signal, thereby making the process of determining the time domain resources of the second common signal more suitable for the frequency division multiplexing scheme of multiple time-frequency resources.

[0256] For example, the time domain resource position n0 of the second resource satisfies the following formula (1):

[0257]

[0258] In formula (1), μ is the subcarrier spacing of the first common signal, O is the value or preset value indicated by the main system information, X is the value or preset value indicated by the main system information, i is the time-frequency index of the first common signal, M is the number of frequency domain resources in multiple time-frequency resources used to transmit the first common signal, Indicates rounding down. i can be the time-frequency index of the first common signal in the scheme provided by the aforementioned Implementation A1 or Implementation A2. In the above Implementation A3, i can be the order of the time-frequency resources corresponding to the first common signal in Implementation A3 among the MN time-frequency resources. The M*N time-frequency resources can be sorted in the order of frequency domain first and then time domain or time domain first and then frequency domain. For related content, please refer to Implementation A1 and Implementation A2, which will not be repeated here.

[0259] After the terminal device receives the first common signal, it can try to detect the second common signal (the second common signal can be, for example, SIB1 PDCCH) in time slot n0 or time slot n0+1 according to the time-frequency index i corresponding to the first common signal. If PDCCH is detected, the corresponding PDSCH continues to be received, and subsequent processes are performed. Different first common signals (or PDSCH corresponding to different beams have the same load content, but the corresponding modulation order, code rate, time, and frequency position may be different. In the above scheme, since the above time-frequency index will be affected by multiple frequency domain resources, the above formula also combines the factor of the number of frequency domain resources, so that the formula can be more applicable to the scheme of frequency division multiplexing of multiple time-frequency resources.

[0260] In implementation mode E3, the time domain resources of the second common signal are associated with at least one of: the time domain resources of the first common signal, the subcarrier spacing of the first common signal, the number of frequency domain resources in multiple resources used to transmit multiple second common signals, or the time-frequency index of the first common signal. In this way, since the above-mentioned time-frequency index will be affected by multiple frequency domain resources, the process of determining the time domain resources of the second common signal also combines the factor of the number of frequency domain resources in multiple resources used to transmit multiple second common signals, thereby making the process of determining the time domain resources of the second common signal more suitable for the frequency division multiplexing scheme of multiple time-frequency resources.

[0261] For example, the time domain resource position n0 of the second resource satisfies the following formula (2):

[0262]

[0263] In formula (2), M' is the number of frequency domain resources in the plurality of resources used to transmit the plurality of second common signals, μ, O, X, i and For the relevant contents of , please refer to the relevant description in the above formula (1) and will not be repeated here.

[0264] In one possible implementation, in order to facilitate the use of higher transmission power or customized hardware to send common signals (such as the first common signal and the second common signal), different hardware architectures can be used to send (or different sending methods) common signals (such as the first common signal and the second common signal). Two possible implementations are introduced below through Example 1 and Example 2.

[0265] Example 1: Common signals (such as the first common signal and the second common signal mentioned above) and other downlink signals (such as data signals) are sent using different radio frequency channels (or different antenna ports, or based on different spatial relationships).

[0266] For example, multiple first public signals are sent through the first RF channel. Multiple second public signals are also sent through the first RF channel. The first RF channel cannot be used to send other non-public signals, such as data signals. It can also be described as that the signals sent by the first RF channel are all public signals. The data signal can be sent through other RF channels except the first RF channel. It can also be understood that the data signal and the public signal are sent through different RF channels. In this way, the public signal can be sent through a dedicated RF channel, and then the design parameters of the RF channel can be made to better match the sending of the public signal.

[0267] For another example, multiple first public signals are sent through the first antenna port. Multiple second public signals are also sent through the first antenna port. The first antenna port cannot be used to send other non-public signals, such as data signals. It can also be described as that the signals sent by the first antenna port are all public signals. Data signals can be sent through other antenna ports except the first antenna port. It can also be understood that data signals and public signals are sent through different antenna ports. In this way, public signals can be sent through a dedicated antenna port, and then the design parameters of the antenna port can be made more compatible with the sending of public signals.

[0268] For another example, the spatial relationship of multiple first common signals is a first spatial relationship. The spatial relationship of multiple second common signals is also a first spatial relationship. In one possible implementation, the spatial relationship of a common signal (such as a first common signal or a second common signal) sent by a network device is associated with reference signal #1. The spatial relationship associated with reference signal #1 can be regarded as an example of a first spatial relationship. The spatial relationship of other signals (such as data signals) is different from the first spatial relationship, and it can also be understood that the reference signal associated with the spatial relationship of other signals (such as data signals) is different from reference signal #1. It can also be understood that data signals and common signals are sent through different spatial relationships (or beams). In this way, a common signal can be sent through a dedicated spatial relationship, which can then enable the network device to select a spatial relationship that better matches the sending of the common signal, and then the communication process can be optimized.

[0269] The implementation scheme provided in this example can be combined with the aforementioned Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 or Fig. 9 At least one of the embodiments provided in is used in combination. In one possible implementation, multiple first common signals are sent by a network device through multiple time-frequency resources. The time domain resources of two first common signals among the multiple first common signals may be the same, and the frequency domain resources may be different. To give an example in conjunction with this example, for example, for two first common signals among the multiple first common signals, at the same time, the two first common signals sent through the same radio frequency channel (or the same antenna port) are at different frequencies. For another example, for two first common signals among the multiple first common signals, at the same time, the two first common signals sent through the same radio frequency channel (or the same antenna port) are at the same or different frequencies.

[0270] Fig.11 A possible structural diagram of a communication device provided in an embodiment of the present application is exemplified. Fig.11 A block in the module 1204 may represent a digital channel, and the F in the block SSB 、F 1，1 、F 1，W 、F R，1 、F R，W It can be understood as a digital precoding weight. A phase shifter can represent an analog channel. A phase shifter can be connected to one array or multiple arrays, that is, a phase shifter can control one or more arrays, or multiple phase shifters can be cross-connected with multiple arrays. Multiple arrays can form an antenna array. Fig.11 Two antenna arrays are exemplarily shown, such as antenna array #0 and antenna array #(R-1).

[0271] The communication device may be a network device. Fig.11 As shown, the network device includes multiple radio frequency channels. SSB The corresponding radio frequency channels may be used to transmit common signals (such as the first common signal and the second common signal mentioned above), and other radio frequency channels may be used to transmit signals other than the common signals (such as data signals).

[0272] Fig.11In the invention, the RF channel may include an RF receive path and an RF transmit path. The RF channel may also be referred to as an RF subsystem, which may be composed of an RF integrated circuit and an RF front-end device. The RF receive channel may receive an RF signal through an antenna, process the RF signal (such as amplification, filtering and down-conversion) to obtain a baseband signal, and pass it to the baseband subsystem. The RF transmit channel may receive a baseband signal from the baseband subsystem, process the baseband signal (such as up-conversion, amplification and filtering) to obtain an RF signal, and finally radiate the RF signal into space through an antenna. The RF integrated circuit may be referred to as an RF processing chip or an RF chip.

[0273] Specifically, the RF subsystem may include electronic devices such as antenna switches, antenna tuners, low noise amplifiers (LNA), power amplifiers (PA), mixers, local oscillators (LO), filters, etc., which can be integrated into one or more chips as needed. RF integrated circuits can be called RF processing chips or RF chips. RF front-end devices can also be independent chips. RF chips are sometimes also called receivers, transmitters, transceivers or transceivers. With the evolution of technology, antennas can sometimes be considered as part of the RF subsystem and can be integrated into the chip of the RF subsystem. Antennas, RF front-end devices and RF chips can all be manufactured and sold separately. Of course, the RF subsystem can also use different devices or different integration methods based on power consumption and performance requirements. For example, some devices belonging to the RF front end are integrated into the RF chip, and even the antenna and RF front-end devices are integrated into the RF chip. The RF chip can also be called an RF antenna module or antenna module.

[0274] Similar to the RF subsystem, which mainly processes RF signals, the baseband subsystem, as the name implies, mainly processes baseband signals. The baseband subsystem can extract useful information or data bits from the baseband signal, or convert information or data bits into baseband signals to be sent. These information or data bits can be data representing user data such as voice, text, video, or control information. For example, the baseband subsystem can implement signal processing operations such as modulation and demodulation, encoding, and decoding. For different wireless access technologies, such as 5G NR and 4G LTE, the baseband signal processing operations are not exactly the same.

[0275] In addition, since the radio frequency signal is usually an analog signal, the signal processed by the baseband subsystem is mainly a digital signal, and an analog-to-digital converter is also required in the communication device. In the embodiment of the present application, the analog-to-digital converter can be set in the baseband subsystem or in the radio frequency subsystem. The analog-to-digital converter includes an analog-to-digital converter (ADC) that converts an analog signal into a digital signal, and a digital-to-analog converter (DAC) that converts a digital signal into an analog signal.

[0276] like Fig.11 As shown, the communication device may further include a processing unit 1201. Fig.11 In the communication device, the communication device may include one or more processors. The multiple processors may be multiple processors of the same type, or may include a combination of multiple types of processors. In the present application, the processor may be a general-purpose processor or a processor designed for a specific field. For example, the processor may be a central processing unit (CPU), a digital signal processor (DSP), or a microcontroller (MCU). The processor may also be a graphics processing unit (GPU), an image signal processor (ISP), an audio signal processor (ASP), and an AI processor specially designed for artificial intelligence (AI) applications. AI processors include, but are not limited to, neural network processing units (NPUs), tensor processing units (TPUs), and processors referred to as AI engines.

[0277] like Fig.11 As shown, the communication device may further include a signal transceiver unit 1203. The signal transceiver unit 1203 may include a transmitting unit 12031 and a receiving unit 12032. The transmitting unit 12031 may be used to send a signal, and the receiving unit 12032 may be used to receive a signal.

[0278] The communication device may further include a storage unit 1202 . Fig.11The memory shown in the figure may include memory and mass storage, and may also include one or more caches in the application subsystem and the baseband subsystem. In specific implementation, the memory can be divided into volatile memory (volatile memory) and non-volatile memory (non-volatile memory, NVM). Volatile memory refers to a memory in which the data stored inside will be lost when the power supply is interrupted. At present, volatile memory is mainly random access memory (random access memory, RAM), including static random access memory (static RAM, SRAM) and dynamic random access memory (dynamic RAM, DRAM). Non-volatile memory refers to a memory in which the data stored inside will not be lost even if the power supply is interrupted. Common non-volatile memories include read-only memory (read only memory, ROM), optical disks, magnetic disks, and various memories based on flash memory technology. Generally speaking, volatile memory can be used for memory and cache, and non-volatile memory, such as flash memory, can be used for mass storage.

[0279] Example 2: different common signals (such as multiple first common signals, and also such as multiple second common signals) are sent using different radio frequency channels (or different antenna ports, or different spatial relationships).

[0280] For example, two first common signals among the plurality of first common signals are sent by the network device through two different radio frequency channels. For another example, two second common signals are sent by the network device through two different radio frequency channels. For another example, the first common signal and the second common signal are sent by the network device through two different radio frequency channels. In this way, the transmission power of the common signal can be increased.

[0281] For another example, two first common signals among the plurality of first common signals are sent by the network device through two different antenna ports. For another example, two second common signals are sent by the network device through two different antenna ports. For another example, the first common signal and the second common signal are sent by the network device through two different antenna ports. In this way, the transmission power of the common signal can be increased.

[0282] For another example, the spatial relationship between two first common signals among the plurality of first common signals is different. In a possible implementation, the reference signals associated with the spatial relationship between the two first common signals sent by the network device are different. This can improve the transmission power of the common signal.

[0283] Fig.12 A possible structural diagram of another communication device provided in an embodiment of the present application is exemplified. Fig.12and Fig.11 Similar to the content in Fig.11 The difference is that Fig.12 There is no description in F SSB The communication device may be a network device. Fig.12 As shown, the network device includes multiple radio frequency channels. Different public signals can be sent using different radio frequency channels. For example, the radio frequency channel corresponding to antenna array #0 can be used to transmit the first public signal #0, and the radio frequency channel corresponding to antenna array #(R-1) can be used to transmit the first public signal #(R-1). For the rest of the content, please refer to Fig.11 The relevant description will not be repeated here.

[0284] In the present application embodiment Fig.12 The provided embodiments can be combined with the aforementioned Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 or Fig. 9 In one possible implementation, the plurality of first common signals are sent by the network device through a plurality of time-frequency resources. The time domain resources of two of the plurality of first common signals may be the same, and the frequency domain resources may be different. Fig.12 For example, for two first common signals among the multiple first common signals, at the same time, the two first common signals sent through different radio frequency channels (or different antenna ports) are located at different frequencies. For another example, for two first common signals among the multiple first common signals, at different times, the two first common signals sent through different radio frequency channels (or different antenna ports) are located at the same or different frequencies.

[0285] It is understandable that in order to implement the functions in the above embodiments, the terminal device and the network device may include hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0286] Fig.13 and Fig.14 Schematic diagram of possible structures of several communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal or base station in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 1The terminal device shown may also be Figure 1 The network device (such as a RAN node) shown may also be applied to Figure 1 The chip system of the terminal device or network device shown.

[0287] like Fig.13 As shown, the communication device 1300 includes a processing unit 1310 and a transceiver unit 1320. The communication device 1300 is used to implement the above Figure 4 The functions of the terminal device or the network device in the method embodiment shown in FIG.

[0288] When the communication device 1300 is used to implement Figure 4 When the terminal device functions in the method embodiment shown, the processing unit 1310 is used to: receive the first common signal through the transceiver unit 1320.

[0289] In a possible implementation, when the communication device 1300 is used to implement Figure 4 When the terminal device functions in the method embodiment shown, the processing unit 1310 is further configured to receive a second common signal through the transceiver unit 1320 .

[0290] When the communication device 1300 is used to implement Figure 4 When the function of the second device in the method embodiment is shown, the processing unit 1310 is used to send a plurality of first common signals through the transceiver unit 1320.

[0291] In a possible implementation, when the communication device 1300 is used to implement Figure 4 When the function of the network device in the method embodiment is shown, the processing unit 1310 is further configured to send a second common signal through the transceiver unit 1320 .

[0292] For more detailed description of the processing unit 1310 and the transceiver unit 1320, please refer to Figure 4 The method embodiment shown is described in detail.

[0293] like Fig.14 As shown, the communication device 1400 includes a processor 1410 and an interface circuit 1420. The processor 1410 and the interface circuit 1420 are coupled to each other. It is understood that the interface circuit 1420 can be a transceiver or an input-output interface. Optionally, the communication device 1400 may also include a memory 1430 for storing instructions executed by the processor 1410 or storing input data required by the processor 1410 to execute instructions or storing data generated after the processor 1410 executes instructions.

[0294] When the communication device 1400 is used to implement Figure 4When the method is shown, the processor 1410 is used to implement the function of the above-mentioned processing unit 1310, and the interface circuit 1420 is used to implement the function of the above-mentioned transceiver unit 1320.

[0295] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal device in the above-mentioned method embodiment. The terminal chip receives information from the base station, which can be understood as the information is first received by other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information is first sent to other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the base station by these modules.

[0296] When the above-mentioned communication device is a chip applied to a base station, the base station chip implements the function of the network device in the above-mentioned method embodiment. The base station chip receives information from the terminal, which can be understood as the information is first received by other modules in the base station (such as a radio frequency module or an antenna), and then sent to the base station chip by these modules. The base station chip sends information to the terminal, which can be understood as the information is sent to other modules in the base station (such as a radio frequency module or an antenna), and then sent to the terminal by these modules.

[0297] In the present application, when entity A sends information to entity B, it can be that A sends it directly to B, or that A sends it to B indirectly through other entities. Similarly, when entity B receives information from entity A, it can be that entity B directly receives the information sent by entity A, or that entity B indirectly receives the information sent by entity A through other entities. Entities A and B here can be RAN nodes or terminals, or modules inside the RAN nodes or terminals. The sending and receiving of information can be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station.

[0298] For the relevant contents of the processor and memory in the embodiments of the present application, please refer to the above description and will not be repeated here.

[0299] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also be present in a base station or a terminal as discrete components.

[0300] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When a computer program or instruction is loaded and executed on a computer, the process or function of the embodiment of the present application is executed in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instruction can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, a hard disk, or a tape; it can also be an optical medium, such as a digital video disc; it can also be a semiconductor medium, such as a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0301] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0302] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0303] It is understood that the various numbers involved in the embodiments of the present application (such as the digital numbers "first" and "second", and the letter numbers "A1", "B1", etc.) are only distinguished for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: The method is applicable to a terminal device, comprising: receiving a first common signal; The first common signal occupies one frequency domain resource, the first common signal is one of multiple first common signals sent by the network device, the multiple first common signals occupy M frequency domain resources, M is an integer greater than 1, and the frequency domain resource occupied by the first common signal is one of the M frequency domain resources; The multiple first common signals belong to common signals of the same serving cell, and the multiple first common signals belong to common signals within a common signal sending cycle.

2. The method according to claim 1, characterized in that An interval between two frequency domain resources among the M frequency domain resources is a first frequency value or a first number of resource blocks.

3. The method according to claim 2, characterized in that The first frequency value includes: F*1200kHz, F*1.44MHz, F*2.88MHz, F*4.32MHz, F*5.76MHz, F*8.64MHz, F*11.52MHz, F*17.28MHz, F*28.28MHz, F*34.56MHz, F*69.12MHz, or F*138.24MHz; F is a positive integer; or; The first number of resource blocks includes: F*12, where F is a positive integer.

4. The method according to any one of claims 1 to 3, characterized in that: The first common signal occupies one time domain resource, the multiple first common signals occupy N frequency domain resources, N is a positive integer, and the time domain resource occupied by the first common signal belongs to one of the N time domain resources.

5. The method according to claim 4, characterized in that The M and / or the N are associated with a carrier frequency; or, A set of values ​​of the M and the N is associated with a carrier frequency.

6. The method according to any one of claims 4 to 5, characterized in that: The M and / or the N are preset values; or, the M and / or the N are determined based on at least one of the following: A sequence of a primary synchronization signal PSS in the first common signal; a sequence of a secondary synchronization signal SSS in the first common signal; cell identification information associated with the first public signal; A demodulation reference signal DMRS sequence in a physical broadcast channel PBCH of the first common signal; Received information indicating said M; or, The received information is used to indicate the N.

7. The method according to any one of claims 4 to 6, characterized in that: A time-frequency index corresponding to a first common signal among the multiple first common signals; The time-frequency index satisfies one of the following: The time-frequency index indicates the order of the time-frequency resource of the first common signal among the multiple time-frequency resources occupied by the multiple first common signals; wherein the multiple time-frequency resources include the M frequency domain resources and the N time domain resources, and the multiple time-frequency resources are ordered in a manner of first time domain and then frequency domain, or the multiple time-frequency resources are ordered in a manner of first frequency domain and then time domain; or; The time-frequency index includes a first value and a second value, wherein the first value indicates the order of the time domain resources of the first common signal among the N time domain resources, and the second value indicates the order of the frequency domain resources of the first common signal among the M frequency domain resources.

8. The method according to any one of claims 1 to 7, characterized in that: The method further comprises: A second common signal or a control channel corresponding to the second common signal is received according to the first common signal, where the second common signal includes system information.

9. The method according to claim 8, characterized in that The frequency domain resource of the first common signal and the frequency domain resource of the second common signal satisfy one of the following: The frequency domain resources of the first common signal and the frequency domain resources of the second common signal have the same starting frequency point; The frequency domain resource of the first common signal and the frequency domain resource of the second common signal have the same central frequency point; A second value is separated from a frequency point of the frequency domain resource of the first common signal and a frequency point of the frequency domain resource of the second common signal, and the second value is a preset value; A frequency point of the frequency domain resource of the first common signal and a frequency point of the frequency domain resource of the second common signal are separated by a third value, where the third value is associated with a bandwidth of the second common signal; A frequency point of the frequency domain resource of the first common signal and a frequency point of the frequency domain resource of the second common signal are separated by a fourth value, and the fourth value is associated with a difference between a bandwidth of the second common signal and a bandwidth of the first common signal; or, The frequency deviation between the frequency domain resources of the first common signal and the frequency domain resources of another first common signal is associated with the frequency deviation between the frequency domain resources of the first common signal and the frequency domain resources of the second common signal.

10. The method according to claim 8 or 9, characterized in that The time domain resource of the first common signal is the same as the time domain resource of the second common signal; or, The time domain resources of the second common signal are associated with at least one of: the time domain resources of the first common signal, the subcarrier spacing of the first common signal, the value of M, or the time-frequency index of the first common signal.

11. The method according to claim 10, characterized in that The time domain resource position n0 of the second resource satisfies the following formula: Wherein, μ is the subcarrier spacing of the first common signal, O is the value or preset value indicated by the main system information, X is the value or preset value indicated by the main system information, i is the time-frequency index of the first common signal, Indicates rounding down.

12. The method according to any one of claims 1 to 11, characterized in that: Two first common signals among the multiple first common signals satisfy at least one of the following: the two first common signals correspond to different radio frequency channels, different antenna ports, or different spatial relationships; or; The multiple first common signals satisfy at least one of the following: the multiple first common signals correspond to a first RF channel, to a first antenna port, or to a first spatial relationship; wherein, the signal transmitted by the first RF channel belongs to a common signal, the signal transmitted by the first antenna port belongs to a common signal, and the signal associated with the first spatial relationship belongs to a common signal.

13. A communication method, characterized in that: The method is applicable to a network device, comprising: sending a plurality of first common signals; The multiple first common signals occupy M frequency domain resources, where M is an integer greater than 1, and a first common signal among the multiple first common signals occupies one frequency domain resource among the M frequency domain resources; The multiple first common signals belong to common signals of the same serving cell, and the multiple first common signals belong to common signals within a common signal sending cycle.

14. The method according to claim 13, characterized in that An interval between two frequency domain resources among the M frequency domain resources is a first frequency value or a first number of resource blocks.

15. The method according to claim 14, characterized in that The first frequency value includes: F*1200kHz, F*1.44MHz, F*2.88MHz, F*4.32MHz, F*5.76MHz, F*8.64MHz, F*11.52MHz, F*17.28MHz, F*28.28MHz, F*34.56MHz, F*69.12MHz, or F*138.24MHz; F is a positive integer; or; The first number of resource blocks includes: F*12, where F is a positive integer.

16. The method according to any one of claims 13 to 15, characterized in that: The first common signal occupies one time domain resource, the multiple first common signals occupy N frequency domain resources, N is a positive integer, and the time domain resource occupied by the first common signal belongs to one of the N time domain resources.

17. The method according to claim 16, characterized in that The M and / or the N are associated with a carrier frequency; or, A set of values ​​of the M and the N is associated with a carrier frequency.

18. The method according to any one of claims 16 to 17, characterized in that: The M and / or the N are preset values; or, the M and / or the N are determined based on at least one of the following: A sequence of a primary synchronization signal PSS of a first common signal among the plurality of first common signals; a sequence of a secondary synchronization signal SSS of a first common signal among the plurality of first common signals; cell identification information associated with a first common signal among the multiple first common signals; a demodulation reference signal DMRS sequence in a physical broadcast channel PBCH of a first common signal among the multiple first common signals; Received information indicating said M; or, The received information is used to indicate the N.

19. The method according to any one of claims 16 to 18, characterized in that: A time-frequency index corresponding to a first common signal among the multiple first common signals; The time-frequency index satisfies one of the following: The time-frequency index indicates the order of the time-frequency resource of the first common signal among the multiple time-frequency resources occupied by the multiple first common signals; wherein the multiple time-frequency resources include the M frequency domain resources and the N time domain resources, and the multiple time-frequency resources are ordered in a manner of first time domain and then frequency domain, or the multiple time-frequency resources are ordered in a manner of first frequency domain and then time domain; or; The time-frequency index includes a first value and a second value, wherein the first value indicates the order of the time domain resources of the first common signal among the N time domain resources, and the second value indicates the order of the frequency domain resources of the first common signal among the M frequency domain resources.

20. The method according to any one of claims 16 to 19, characterized in that: The method further comprises: A second common signal or a control channel corresponding to the second common signal is sent, where the second common signal includes system information.

21. The method of claim 20, wherein: The frequency domain resource of the first common signal and the frequency domain resource of the second common signal satisfy one of the following: The frequency domain resources of the first common signal and the frequency domain resources of the second common signal have the same starting frequency point; The frequency domain resource of the first common signal and the frequency domain resource of the second common signal have the same central frequency point; A second value is separated from a frequency point of the frequency domain resource of the first common signal and a frequency point of the frequency domain resource of the second common signal, and the second value is a preset value; A frequency point of the frequency domain resource of the first common signal and a frequency point of the frequency domain resource of the second common signal are separated by a third value, where the third value is associated with a bandwidth of the second common signal; A frequency point of the frequency domain resource of the first common signal and a frequency point of the frequency domain resource of the second common signal are separated by a fourth value, and the fourth value is associated with a difference between a bandwidth of the second common signal and a bandwidth of the first common signal; or, The frequency deviation between the frequency domain resources of the first common signal and the frequency domain resources of another first common signal is associated with the frequency deviation between the frequency domain resources of the first common signal and the frequency domain resources of the second common signal.

22. The method according to claim 20 or 21, characterized in that The time domain resource of the first common signal is the same as the time domain resource of the second common signal; or, The time domain resources of the second common signal are associated with at least one of: the time domain resources of the first common signal, the subcarrier spacing of the first common signal, the value of M, or the time-frequency index of the first common signal.

23. The method of claim 22, wherein: The time domain resource position n0 of the second resource satisfies the following formula: Wherein, μ is the subcarrier spacing of the first common signal, O is the value or preset value indicated by the main system information, X is the value or preset value indicated by the main system information, i is the time-frequency index of the first common signal, Indicates rounding down.

24. The method according to any one of claims 13 to 23, characterized in that Two first common signals among the multiple first common signals satisfy at least one of the following: the two first common signals correspond to different radio frequency channels, different antenna ports, or different spatial relationships; or; The multiple first common signals satisfy at least one of the following: the multiple first common signals correspond to a first RF channel, to a first antenna port, or to a first spatial relationship; wherein, the signal transmitted by the first RF channel belongs to a common signal, the signal transmitted by the first antenna port belongs to a common signal, and the signal associated with the first spatial relationship belongs to a common signal.

25. A communication device, characterized in that: The method comprises a module for executing the method as claimed in any one of claims 1 to 12, or comprises a module for executing the method as claimed in any one of claims 13 to 24.

26. A communication device, characterized in that: The method comprises a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices and transmit them to the processor or send signals from the processor to other communication devices, and the processor is used to implement the method as described in any one of claims 1 to 12 or the method as described in any one of claims 13 to 24 through a logic circuit or executing code instructions.

27. A communication device, characterized in that: The method comprises a processor, wherein the processor is used to implement the method according to any one of claims 1 to 12 or the method according to any one of claims 13 to 24 through a logic circuit or executing a code instruction.

28. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction. When the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 12 or the method according to any one of claims 13 to 24 is implemented.

29. A computer program product, characterized in that The computer program product stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes the method according to any one of claims 1 to 12, or the method according to any one of claims 13 to 24.

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