Communication method and related device

Abstract

The present application relates to the field of communications. Provided are a communication method and a related device, which are used for improving the sensing performance in a communication system in a scenario of integrated sensing and communication. The method comprises: a first device sending first information, which is used for scheduling a first resource, wherein the first resource comprises N orthogonal frequency-division multiplexing (OFDM) symbols on a first slot, N being a positive integer and a time-domain interval between every two adjacent OFDM symbols among the N OFDM symbols being a first interval; and a first device transmitting a sensing signal, wherein the sensing signal is carried in the N OFDM symbols, the sensing signal is modulated on the basis of a first modulation mode, and the amplitudes of different constellation points in a constellation diagram corresponding to the first modulation mode are equal, or the difference between the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation mode is less than or equal to a first threshold value.

Description

A communication method and related equipment

[0001] This application claims priority to Chinese Patent Application No. 202410798197.1, filed on June 19, 2024, entitled "A Communication Method and Related Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more particularly to a communication method and related equipment. Background Technology

[0003] Currently, integrated sensing and communication (ISAC) is widely considered a key application scenario in future communication systems. In an ISAC scenario, the wireless signal transmitted from the transmitter to the receiver needs to possess both sensing and communication capabilities. Sensing capability refers to the receiver's ability to sense the transmitter's speed, distance, etc., or the speed of obstacles in the transmitter's surrounding environment and their relative positions to the transmitter, based on the wireless signal.

[0004] For example, the transmitting end can allocate communication resources based on resource blocks, that is, allocate a certain amount of resources to each user who needs to send sensing signals. These resources are used to carry the sensing signals and then send them. However, in scenarios where speed and other parameters are sensed, the sensing performance is poor because the temporal diversity gain cannot be maximized.

[0005] Therefore, in scenarios where communication and sensing are integrated, how to improve the sensing performance of the communication system is an urgent technical problem to be solved. Summary of the Invention

[0006] This application provides a communication method and related equipment for more accurately sensing speed and other parameters in scenarios where communication and sensing are integrated, thereby improving the sensing performance of the communication system.

[0007] This application provides a communication method in a first aspect. Optionally, the method is executed by a first device, or by some components of the first device (e.g., a processor, chip, or chip system), or the method can also be implemented by a logic module or software capable of implementing all or part of the functions of the first device. In the first aspect and its possible embodiments, the method is described using the execution of the first device as an example. The first device sends first information for scheduling first resources, which include N orthogonal frequency division multiplexing (OFDM) symbols in a first time slot, where N is a positive integer, and the time-domain interval between adjacent OFDM symbols is a first interval. The first device transmits a sensing signal carried in the N OFDM symbols, which is modulated according to a first modulation scheme. The amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold.

[0008] Based on the above method, the amplitude difference between different constellation points in the constellation diagram corresponding to the first modulation scheme is small, and the sidelobe energy of the corresponding range ambiguity function is low, thereby reducing interference to other targets and improving sensing performance. Furthermore, the N OFDM symbols carrying the sensing signal have equal time-domain spacing, meaning they are uniformly distributed in the time domain. Compared to a concentrated distribution in the time domain, this uniform distribution allows the N OFDM symbols to utilize the entire time domain as much as possible, resulting in greater time-domain diversity gain. Consequently, the Doppler resolution of the sensing result obtained by transmitting the sensing signal is higher, enabling more accurate sensing of speed and other parameters, thus improving the sensing performance of the communication system.

[0009] In one possible implementation of the first aspect, the first interval is determined based on the ratio of a first value to N, where the first value is the total number of OFDM symbols in the total scheduling resources.

[0010] Based on the above implementation, the first interval between these N OFDM symbols is adapted to the ratio of the N OFDM symbols in the total scheduling resources. This ratio allows the N OFDM symbols to be distributed as evenly as possible across the entire time slot, rather than being concentrated across the entire time slot, thus occupying as much time domain resources as possible, thereby improving Doppler resolution and enabling more accurate speed perception.

[0011] In one possible implementation of the first aspect, the first interval satisfies the following formula: E = floor(Δ1), where E is the first interval, Δ1 is the ratio of the first value to N, and floor represents the floor operation.

[0012] Based on the above implementation method, since the above formula is relatively simple, the first device can quickly determine the first interval. Furthermore, the first interval calculated by the above formula is as close as possible to the ratio of N OFDM symbols in the total scheduling resources, so as to fill the entire time slot of the total scheduling resources as much as possible, thereby making full use of the entire time slot and maximizing the temporal diversity gain, thereby improving the performance of sensing parameters such as speed.

[0013] In one possible implementation of the first aspect, the first information includes: a first set of bits, a second set of bits, and a third set of bits, wherein the first set of bits is used to indicate the position of the first OFDM symbol among the N OFDM symbols, the second set of bits is used to indicate the first interval, and the third set of bits is used to indicate the position of the last OFDM symbol among the N OFDM symbols; or the first set of bits is used to indicate the position of the first OFDM symbol among the N OFDM symbols, the second set of bits is used to indicate the first interval, and the third set of bits is used to indicate the N; or the first set of bits is used to indicate the position of the last OFDM symbol among the N OFDM symbols, the second set of bits is used to indicate the first interval, and the third set of bits is used to indicate the N.

[0014] Based on the above implementation, the first information can accurately indicate the time-domain location of the multiple OFDM symbols through the first group of bits, the second group of bits, and the third group of bits. Furthermore, this method provides multiple ways to indicate the time-domain location of the multiple OFDM symbols, offering considerable flexibility.

[0015] In one possible implementation of the first aspect, the first information is further used to schedule a second resource, the second resource including M OFDM symbols on the first time slot, where M is a positive integer, and the time domain interval between adjacent OFDM symbols in the M OFDM symbols is a second interval; the first device transmits first data, the first data being carried in the M OFDM symbols, the first data being modulated according to a second modulation scheme, the order of the second modulation scheme being greater than or equal to the order of the first modulation scheme.

[0016] Based on the above implementation, when the order of the second modulation scheme is greater than that of the first modulation scheme, the sensing signal modulated by the first modulation scheme can be used to ensure sensing performance, and the first data modulated by the second modulation scheme can be used to ensure communication performance, thus balancing sensing and communication requirements. Furthermore, this approach combines existing first and second modulation schemes, such as QPSK and 64-QAM modulation schemes. This approach does not change the modulation scheme of the data or signal, therefore it does not require changes to the modulation and coding scheme (MCS) table, has minimal impact on standards, is easily adopted by standards, and is therefore easy to implement. Furthermore, in this approach, both the first and second resources are scheduled at the OFDM symbol level, allowing for flexible scheduling of resources for sensing signals corresponding to low-order modulation schemes (e.g., the first modulation scheme) and data corresponding to high-order modulation schemes (e.g., the second modulation scheme). Compared to schemes that can only schedule resources at the RB level, this approach can control the scheduling of each OFDM symbol. By controlling the spacing between OFDM symbols used to carry sensing signals and the spacing between OFDM symbols used to carry data, the two types of OFDM symbols can be evenly distributed across time slots, thereby fully utilizing time slot resources and improving sensing and communication performance.

[0017] In one possible implementation of the first aspect, the second interval is determined based on the ratio of the first value to M.

[0018] Based on the above method, the first interval between these M OFDM symbols is adapted to the ratio of the M OFDM symbols in the total scheduling resources. This ratio allows the M OFDM symbols to be distributed as evenly as possible across the entire time slot, rather than being concentrated throughout. This approach allows for better utilization of time slot resources for communication and avoids the impact of scheduling the second resource on the scheduling of the first resource, which is used for transmitting sensing signals. Therefore, this method balances sensing and communication requirements.

[0019] In one possible implementation of the first aspect, the second interval satisfies the following formula: F = floor(Δ2), where F is the second interval, Δ2 is the ratio of the first value to M, and floor represents the floor operation.

[0020] Based on the above method, and because the formula is relatively simple, the first device can quickly determine the second interval. Furthermore, the first interval calculated using the above formula is as close as possible to the ratio of M OFDM symbols in the total scheduling resources, thus ensuring that the entire time slot of the total scheduling resources is filled as much as possible. This maximizes the utilization of the entire time slot, achieving maximum time-domain diversity gain and improving communication performance.

[0021] In one possible implementation of the first aspect, the first information includes: a fourth set of bits, a fifth set of bits, and a sixth set of bits, wherein the fourth set of bits is used to indicate the position of the first OFDM symbol among the M OFDM symbols, the fifth set of bits is used to indicate the second interval, and the sixth set of bits is used to indicate the position of the last OFDM symbol among the M OFDM symbols; or the fourth set of bits is used to indicate the position of the first OFDM symbol among the M OFDM symbols, the fifth set of bits is used to indicate the second interval, and the sixth set of bits is used to indicate the M; or the fourth set of bits is used to indicate the position of the last OFDM symbol among the M OFDM symbols, the fifth set of bits is used to indicate the second interval, and the sixth set of bits is used to indicate the M.

[0022] Based on the above method, the first information can accurately indicate the time-domain position of the M OFDM symbols through the fourth, fifth, and sixth groups of bits. Furthermore, this method provides multiple ways to indicate the time-domain position of the M OFDM symbols, offering considerable flexibility.

[0023] In one possible implementation of the first aspect, the first information is further used to schedule a third resource, the third resource including K OFDM symbols on the first time slot, where K is a positive integer, each of the K OFDM symbols being adjacent to one of the N OFDM symbols; the first device transmits a demodulation reference signal carried in the K OFDM symbols.

[0024] Based on the above implementation, by making each of the K OFDM symbols adjacent to one of the N OFDM symbols, the adjacent symbols can be grouped into pairs, and thus can be scheduled in a group. The signals carried by the adjacent symbols can also be bound together.

[0025] In one possible implementation of the first aspect, the first information further includes: the location distribution information of the demodulation reference signal, the location distribution information including: information describing the location of the N OFDM symbols.

[0026] Based on the above implementation method, OFDM symbols carrying sensing signals and OFDM symbols carrying demodulation reference signals can be grouped in pairs, so that both are evenly distributed throughout the slot, thereby improving sensing performance.

[0027] A second aspect of this application provides a communication method, which may be executed by a second device, or by some components of the second device (e.g., a processor, a chip, or a chip system), or may be implemented by a logic module or software capable of implementing all or part of the functions of the second device. In the second aspect and its possible implementations, taking the communication method performed by a second device as an example, the second device sends first information for scheduling a first resource and a third resource. The first resource includes N OFDM symbols on a first time slot, where N is a positive integer. The third resource includes K OFDM symbols on the first time slot, where K is a positive integer. Each of the K OFDM symbols is adjacent to one of the N OFDM symbols. The second device transmits a sensing signal carried in the N OFDM symbols. The sensing signal is modulated according to a first modulation scheme, where the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold. The second device transmits a demodulation reference signal carried in the K OFDM symbols.

[0028] In one possible implementation of the second aspect, the first information includes: the location distribution information of the demodulation reference signal, the location distribution information including: information describing the location of the K OFDM symbols.

[0029] A third aspect of this application provides a communication method, optionally executed by a third device, or by some components of the third device (e.g., a processor, chip, or chip system), or by a logic module or software capable of implementing all or part of the functions of the third device. In the third aspect and its possible embodiments, the communication method is described as being executed by a third device. The third device receives first information for scheduling a first resource, the first resource including N OFDM symbols in a first time slot, where N is a positive integer, and the time interval between adjacent OFDM symbols in the N OFDM symbols is a first interval. The third device transmits a sensing signal carried in the N OFDM symbols, the sensing signal being modulated according to a first modulation scheme, wherein the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold.

[0030] In one possible implementation of the third aspect, the first interval is determined based on the ratio of a first value to N, where the first value is the total number of OFDM symbols in the total scheduling resources.

[0031] In one possible implementation of the third aspect, the first interval satisfies the following formula: E = floor(Δ1), where E is the first interval, Δ1 is the ratio of the first value to N, and floor represents the floor operation.

[0032] In one possible implementation of the third aspect, the first information includes: a first set of bits, a second set of bits, and a third set of bits, wherein the first set of bits is used to indicate the position of the first OFDM symbol among the N OFDM symbols, the second set of bits is used to indicate the first interval, and the third set of bits is used to indicate the position of the last OFDM symbol among the N OFDM symbols; or the first set of bits is used to indicate the position of the first OFDM symbol among the N OFDM symbols, the second set of bits is used to indicate the first interval, and the third set of bits is used to indicate the N; or the first set of bits is used to indicate the position of the last OFDM symbol among the N OFDM symbols, the second set of bits is used to indicate the first interval, and the third set of bits is used to indicate the N.

[0033] This application provides a communication method in a fourth aspect. Optionally, the method is executed by a fourth device, or by some components of the fourth device (e.g., a processor, chip, or chip system), or the method can also be implemented by a logic module or software capable of implementing all or part of the functions of the fourth device. In the fourth aspect and its possible embodiments, the communication method is described as being executed by a fourth device. The fourth device receives first information, which is used to schedule a second resource. The second resource includes M OFDM symbols in a first time slot, where M is a positive integer, and the time interval between adjacent OFDM symbols in the M OFDM symbols is a second interval. The fourth device transmits first data, which is carried in the M OFDM symbols. The first data is modulated according to a second modulation scheme, wherein the order of the second modulation scheme is greater than or equal to the order of the first modulation scheme, and the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold.

[0034] In one possible implementation of the fourth aspect, the second interval is determined based on the ratio of a first value to the M, wherein the first value is the total number of OFDM symbols in the total scheduling resources.

[0035] In one possible implementation of the fourth aspect, the second interval satisfies the following formula: F = floor(Δ2), where F is the second interval, Δ2 is the ratio of the first value to M, and floor represents the floor operation.

[0036] In one possible implementation of the fourth aspect, the first information includes: a fourth set of bits, a fifth set of bits, and a sixth set of bits, wherein the fourth set of bits is used to indicate the position of the first OFDM symbol among the M OFDM symbols, the fifth set of bits is used to indicate the second interval, and the sixth set of bits is used to indicate the position of the last OFDM symbol among the M OFDM symbols; or the fourth set of bits is used to indicate the position of the first OFDM symbol among the M OFDM symbols, the fifth set of bits is used to indicate the second interval, and the sixth set of bits is used to indicate the M; or the fourth set of bits is used to indicate the position of the last OFDM symbol among the M OFDM symbols, the fifth set of bits is used to indicate the second interval, and the sixth set of bits is used to indicate the M.

[0037] The fifth aspect of this application provides a communication method, which may be executed by a fifth device, or by some components of the fifth device (e.g., a processor, a chip, or a chip system), or may be implemented by a logic module or software capable of implementing all or part of the functions of the fifth device. In the fifth aspect and its possible implementations, the communication method is described as being performed by a fifth device. The fifth device receives first information for scheduling a first resource and a third resource. The first resource includes N OFDM symbols on a first time slot, where N is a positive integer. The third resource includes K OFDM symbols on the first time slot, where K is a positive integer. Each of the K OFDM symbols is adjacent to one of the N OFDM symbols. The fifth device transmits a sensing signal carried in the N OFDM symbols. The sensing signal is modulated according to a first modulation scheme. The amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold. The fifth device transmits a demodulation reference signal carried in the K OFDM symbols.

[0038] In one possible implementation of the fifth aspect, the first information includes: the location distribution information of the demodulation reference signal, the location distribution information including: information describing the location of the K OFDM symbols.

[0039] A sixth aspect of this application provides a communication device, which may be the first device described above. The communication device includes modules or units for performing the methods described in the first aspect and any possible implementation thereof.

[0040] A seventh aspect of this application provides a communication device, which may be the second device described above. The communication device includes modules or units for performing the methods described in the second aspect and any possible implementation thereof.

[0041] An eighth aspect of this application provides a communication device, which may be the third device described above. The communication device includes modules or units for performing the methods described in the third aspect and any possible implementation thereof.

[0042] A ninth aspect of this application provides a communication device, which may be the fourth device described above. The communication device includes modules or units for performing the methods described in the fourth aspect and any possible implementation thereof.

[0043] A tenth aspect of this application provides a communication device, which may be the fifth device described above. The communication device includes modules or units for performing the methods described in the fifth aspect and any possible implementation thereof.

[0044] The eleventh aspect of this application provides a communication device, which may be a first device, a second device, a third device, a fourth device, or a fifth device; it may also be a component (e.g., a processor, a chip, or a chip system) applied to the first device, second device, third device, fourth device, or fifth device; or it may be a logic module or software (e.g., a CU, DU, or RU) capable of implementing all or part of the functions of the first device, second device, third device, fourth device, or fifth device. The communication device includes:

[0045] A processor for executing a program that causes the communication device to perform the method as described in the first or second aspect of the foregoing and any possible implementation thereof.

[0046] Optionally, the communication device further includes a memory, and the processor is coupled to the memory; the memory is used to store programs.

[0047] The twelfth aspect of this application provides a chip or chip system including at least one processor and a communication interface, the communication interface and at least one processor being interconnected via a line, the at least one processor being used to run computer programs or instructions to perform the communication methods described in any of the possible implementations of the first, second, third, fourth or fifth aspects.

[0048] The communication interface in the chip can be an input / output interface, pins, or circuits.

[0049] In one possible implementation, the chip or chip system described above in this application further includes at least one memory storing instructions. The memory can be an internal storage unit of the chip, such as a register or cache, or it can be a storage unit of the chip itself, such as a read-only memory or random access memory.

[0050] The thirteenth aspect of this application provides a communication system, including a communication device that performs the first aspect and any possible implementation thereof, a communication device that performs the second aspect and any possible implementation thereof, a communication device that performs the third aspect and any possible implementation thereof, a communication device that performs the fourth aspect and any possible implementation thereof, and a communication device that performs the fifth aspect and any possible implementation thereof.

[0051] or,

[0052] A gateway station, a communication device that performs the first aspect and any possible implementation thereof, as described above, and a communication device that performs the third aspect and any possible implementation thereof.

[0053] The fourteenth aspect of this application provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method described in the first aspect above, or cause the computer to perform the method described in the second aspect above, or cause the computer to perform the method described in the third aspect above, or cause the computer to perform the method described in the fourth aspect above, or cause the computer to perform the method described in the fifth aspect above.

[0054] The fifteenth aspect of this application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method described in the first aspect above, or cause the computer to perform the method described in the second aspect above, or cause the computer to perform the method described in the third aspect above, or cause the computer to perform the method described in the fourth aspect above, or cause the computer to perform the method described in the fifth aspect above.

[0055] The technical effects of the second to fifteenth aspects or any of the possible implementations can be found in the first aspect or the related possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0056] Figure 1 is a schematic diagram of a system according to an embodiment of this application;

[0057] Figures 2A to 2D are schematic diagrams of application scenarios in the embodiments of this application;

[0058] Figure 3 is a flowchart illustrating a communication method in an embodiment of this application;

[0059] Figure 4 is a schematic diagram of the structure of the first resource in an embodiment of this application;

[0060] Figures 5A to 5D are schematic diagrams illustrating the composition of the first information in the embodiments of this application;

[0061] Figure 6 is a schematic diagram of the distribution of OFDM symbols in an embodiment of this application;

[0062] Figures 7A to 7D are yet another schematic diagram of the composition of the first information in the embodiments of this application;

[0063] Figure 8 is a schematic diagram of the composition of the third resource in an embodiment of this application;

[0064] Figure 9 is a location distribution diagram of DMRS in an embodiment of this application;

[0065] Figure 10 is a time-domain distribution diagram of symbol 1 and symbol 2 in the embodiments of this application;

[0066] Figure 11 is a schematic diagram of the technical effect in an embodiment of this application;

[0067] Figure 12 is another schematic diagram of the technical effect in the embodiments of this application;

[0068] Figure 13 is a schematic diagram of an embodiment of the communication device in this application;

[0069] Figure 14 is a schematic diagram of another embodiment of the communication device in this application;

[0070] Figure 15 is a schematic diagram of another embodiment of the communication device in this application. Detailed Implementation

[0071] First, some terms used in the embodiments of this application will be explained to facilitate understanding by those skilled in the art.

[0072] 1. Access network equipment:

[0073] Access network equipment typically contains communication modules, circuits, or chips that perform corresponding communication functions. It also includes programs or instructions configured to perform these functions. For example, access network equipment can be a base station (BS), an evolved NodeB (eNodeB), a transmission point (TP), an access point (AP), a transmission reception point (TRP), a mobile switching center, a next-generation NodeB (gNB), a next-generation base station in a future communication system, or an access node in a WiFi system. Access network equipment can be a macro base station (as shown in Figure 1, 110a), a micro base station or indoor station (as shown in Figure 1, 110b), a relay node or donor node, or, in a CRAN scenario, a wireless controller, satellite, drone, balloon, or aircraft. Optionally, access network equipment can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, in vehicle-to-everything (V2X) technology, the access network equipment can be a roadside unit (RSU). All or part of the functions of the access network device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform). The access network device in this application can also be a logical node, logical module, or software capable of implementing all or part of the functions of the access network device.

[0074] 2. Terminal equipment

[0075] Terminal devices can communicate with one or more core networks or the Internet via a radio access network (RAN). Terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones), computers, and data cards. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets, and computers with wireless transceiver capabilities. Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station (MS), remote station, access point (AP), remote terminal device, access terminal device, user terminal device, user agent, subscriber station (SS), customer premises equipment (CPE), terminal, user equipment (UE), mobile terminal (MT), etc. Terminal equipment can also be wearable devices and next-generation communication systems, such as terminal equipment in 5G communication systems or terminal equipment in future public land mobile networks (PLMNs).

[0076] 3. Modulation and demodulation:

[0077] Modulation refers to the process by which the transmitting end maps the bit stream to be transmitted (which may be an encoded bit stream) according to a constellation diagram to obtain modulation symbols. Demodulation refers to the process by which the receiving end, after receiving the modulation symbols, demaps the modulation symbols according to the constellation diagram to recover the bit stream. This bit stream may include or carry data. Through this transmission mechanism, more information bits can be carried on a given transmission resource.

[0078] Common modulation methods include quadrature amplitude modulation (QAM) and phase shift keying (PSK).

[0079] Depending on the order of the QAM, QAM can also be called M-QAM, MQAM, or QAM-M, etc., where M is the order of the QAM. For example, a QAM can include at least one of the following: 16QAM, 64QAM, or 256QAM. Each QAM can correspond to a constellation diagram. The amplitude difference between different constellation points in a QAM constellation diagram is large, resulting in a non-constant modulus modulation symbol obtained through this modulation method.

[0080] Depending on the order of the PSK, it can also be called M-PSK, MPSK, or PSK-M, etc., where M is the order of PSK modulation. For example, PSK can include at least one of the following types: 2PSK, 4PSK, 16PSK, 64PSK, etc. 2PSK is also called binary phase shift keying (BPSK), and 4PSK is also called quadrature phase shift keying (QPSK). Each PSK corresponds to a constellation diagram. In the PSK constellation diagram, the amplitudes at different constellation points are equal, and the modulation symbol obtained by this modulation method is constant modulus.

[0081] In this application, modulation symbols may also be referred to as modulation symbol sequences, modulation symbol streams, modulation symbol strings, or modulation symbol sets, etc., without limitation.

[0082] 4. Resource scheduling granularity:

[0083] Currently, the smallest granularity of resource scheduling can be a resource block (RB). For example, an access network device can indicate a resource block group (RBG) to be scheduled for a terminal using a bitmap. Each bit in the bitmap can be used to indicate whether an RBG is scheduled for the terminal. An RBG may include one or more RBs. As another example, an access network device can schedule multiple consecutive RBs for a terminal, indicating to the terminal the first RB and the number of RBs in the set.

[0084] 5. Symbols:

[0085] A symbol can be a unit of time-domain resources; in other words, a symbol can be a unit of time. For example, a symbol can be an OFDM symbol.

[0086] 6. Units of time-domain resources:

[0087] Temporal resources can be measured in units of a transmission time interval (TTI). The smallest unit of scheduling within a TTI actually consists of two temporally contiguous redundancies (RBs) on the same subframe (one RB per slot), and is called an RB pair. The time length occupied by an RB can be one slot, and a slot can include multiple symbols. For example, a slot can include 14 OFDM symbols.

[0088] 7. The terms "system" and "network" in the embodiments of this application can be used interchangeably. "At least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, timing, priority or importance of multiple objects; "send information to... (terminal)" can be understood as the destination of the information being the terminal, which can include sending information directly or indirectly to the terminal. "Receiving information from...(terminal)" can be understood as the source of the information being the terminal, which can include receiving information directly or indirectly from the terminal. The information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be understood in a similar way, and will not be elaborated further here.

[0089] To facilitate understanding of the methods provided in the embodiments of this application, the system architecture of the methods provided in the embodiments of this application will be described below. It is understood that the system architecture described in the embodiments of this application is for the purpose of more clearly illustrating the technical solutions of the embodiments of this application and does not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0090] To facilitate understanding of the embodiments of this application, Figure 1 illustrates a possible, non-limiting system schematic diagram. As shown in Figure 1, the communication system 10 includes a RAN 100 and a core network (CN) 200. Optionally, the communication system 10 may also include an Internet 300.

[0091] RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal (120a-120j in Figure 1, collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment (not shown in Figure 1). Terminal 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wired connected to core network 200. The core network equipment in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and wireless access network logical functions.

[0092] RAN 100 can be a cellular system related to the 3rd Generation Partnership Project (3GPP), such as 4G, 5G mobile communication systems, or future evolution systems. RAN 100 can also be an open radio access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a WiFi system. RAN 100 can also be a communication system that integrates two or more of the above systems.

[0093] RAN node 110, sometimes referred to as RAN entity or access node, constitutes part of the communication system and assists terminals in achieving wireless access. Multiple RAN nodes 110 in communication system 10 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative. For example, network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminals 120j accessing RAN 100 through network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes both referred to as communication devices. For example, network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functions, and network elements 120a-120j can be understood as communication devices with terminal functions.

[0094] RAN nodes can also be described in different ways, such as access network equipment. Unless otherwise specified in this application, access network equipment will be used as the term.

[0095] In one possible scenario, multiple access network devices collaborate to assist a terminal in achieving wireless access, with each device performing a portion of the base station's functions. For example, the access network devices can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and DU can be separate entities or included in the same network element, such as a baseband unit (BBU). The RU can be included in radio frequency equipment or radio frequency units, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0096] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called an open CU (O-CU), DU can also be called an open DU (O-DU), CU-CP can also be called an open CU-CP (O-CU-CP), CU-UP can also be called an open CU-UP (O-CU-UP), and RU can also be called an open RU (O-RU). Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0097] Based on the above description of access network equipment and terminals, this application proposes several possible application scenarios:

[0098] One possible application scenario is in a satellite communication system, as shown in Figure 2A. The access network equipment can be a satellite base station, and one base station can serve multiple terminals. For example, the satellite base station transmits downlink data to the terminal, and the terminal transmits uplink data to the satellite base station.

[0099] Another possible application scenario is an inter-satellite communication system, as shown in Figure 2B. An inter-satellite communication system includes an acquisition, tracking, and pointing (ATP) subsystem or a communication subsystem. The communication subsystem is responsible for transmitting inter-satellite information and is the main body of the inter-satellite communication system; the ATP system is responsible for acquisition, alignment, and tracking between satellites. It determines the direction of arrival of the incident signal (acquisition), adjusts the transmitted wave to aim at the receiving direction (alignment), and continuously adjusts alignment and acquisition throughout the communication process (tracking). For example, access network equipment may include the communication module and transceiver antenna shown in Figure 2B.

[0100] Another possible application scenario is wireless communication systems such as cellular communication, as shown in Figure 2C. The access network equipment can be a base station, and one base station can serve multiple terminals, as shown in Figure 2C(a); or, one terminal can communicate with multiple base stations, as shown in Figure 2C(b).

[0101] Another possible application scenario is wireless communication systems such as wireless local area networks (WLANs), as shown in Figure 2D. The access network device can be an access point (AP), and one AP can serve multiple terminals, as shown in Figure 2D(a); or, one terminal can communicate with multiple APs, as shown in Figure 2D(b).

[0102] It should be noted that the communication system described in the embodiments of this application is for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and does not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0103] In the aforementioned communication systems, ISAC is widely considered a key application scenario for future communication systems. In a scenario of integrated communication and sensing, the wireless signal transmitted from the transmitter to the receiver needs to possess both sensing and communication capabilities. Sensing capability refers to the receiver's ability to sense the transmitter's speed, distance, etc., or the speed of obstacles in the transmitter's surrounding environment and their relative positions to the transmitter, based on the wireless signal.

[0104] For example, the transmitting end can allocate communication resources based on resource blocks, that is, allocate a certain amount of resources to each user who needs to send sensing signals. These resources are used to carry the sensing signals and then send them. However, in scenarios where speed and other parameters are sensed, the sensing performance is poor because the temporal diversity gain cannot be maximized.

[0105] Therefore, in scenarios where communication and sensing are integrated, how to improve the sensing performance of the communication system is an urgent technical problem to be solved.

[0106] To address the aforementioned technical problems, this application provides a communication method. Figure 3 is a flowchart illustrating the communication method provided in this application. Figure 3 uses a first device, a second device, and a third device as examples of the execution entities in this interactive illustration to illustrate the method; however, this application does not limit the execution entities of this interactive illustration. For example, in Figure 3 and the corresponding embodiments, the execution entity in S301a-S304 is the first device. The execution entity can also be a chip, chip system, or processor that supports the first device in implementing the method, or it can be a logic module or software capable of implementing all or part of the functions of the first device. Similarly, in Figure 3 and the corresponding embodiments, the execution entity in S301a-S304 is the first device. The execution entity can also be a chip, chip system, or processor that supports the first device in implementing the method, or it can be a logic module or software capable of implementing all or part of the functions of the first device. The second device in Figure 3 and the corresponding embodiments, in S301a-S304, can also be replaced by a chip, chip system, or processor that supports the second device in implementing the method, or it can be replaced by a logic module or software capable of implementing all or part of the functions of the second device. For example, the third device in S301a-S304 of Figure 3 and the corresponding embodiments can also be replaced by a chip, chip system, or processor that supports the third device in implementing the method, or it can be replaced by a logic module or software that can implement all or part of the functions of the third device.

[0107] The second and third devices can be different devices, or they can be the same device. As shown in Figure 3, the method includes:

[0108] S301a: The first device sends the first information.

[0109] Correspondingly, the second device can receive the first information, as shown in S301a of Figure 3.

[0110] It should be noted that the first information can be used to schedule a first resource for a second device; or the first information can be used to indicate a first resource, which is a resource scheduled for the second device. The first resource includes N OFDM symbols on a first time slot; or the first resource includes N OFDM symbols on a first time interval (TTI); or the first resource includes N OFDM symbols in a first time domain, where N is a positive integer, or the time domain interval between adjacent OFDM symbols among the N OFDM symbols is a first interval; the number of OFDM symbols with intervals between adjacent OFDM symbols among the N OFDM symbols is less than a threshold; or the multiple OFDM symbols are equally spaced; or the multiple OFDM symbols are uniformly distributed.

[0111] Taking Figure 4 as an example, the first resource may include multiple OFDM symbols on a slot, and these multiple OFDM symbols include N OFDM symbols, where these N OFDM symbols are the black-filled rectangles in Figure 4, and the OFDM symbols other than these N OFDM symbols are the white-filled rectangles in Figure 4. The space between adjacent OFDM symbols is a white-filled rectangle, that is, one OFDM symbol.

[0112] The following section will explain the N OFDM symbols and the first interval.

[0113] In one possible implementation, the total number of OFDM symbols in the total scheduling resources is a first value; or the total number of all OFDM symbols that can be scheduled to carry signals at the current time is a first value, and the total number of OFDM symbols in the scheduling resources is a first value; or the total number of OFDM symbols in the overall resources is a first value; or the total number of OFDM symbols in the candidate scheduling resources is a first value. The first interval is determined based on the ratio of N to the first value, and may be related to the ratio of the first value to N; or, the first device may determine the first interval based on the ratio of the first value to N; or, the first interval may be determined based on the first value and N; or, the first interval may be related to the first value and N; or, the first device may determine the first interval based on the first value and N. For example, if N is 3 and the first value is 7, then the first interval may be determined based on 2. In this method, the first interval between adjacent OFDM symbols among the plurality of OFDM symbols may be determined based on the ratio of the first value to N.

[0114] Based on the above implementation, the first interval between these N OFDM symbols is adapted to the ratio of the N OFDM symbols in the total scheduling resources. This ratio allows the N OFDM symbols to be distributed as evenly as possible across the entire time slot, rather than being concentrated across the entire time slot, thus occupying as much time domain resources as possible, thereby improving Doppler resolution and enabling more accurate speed perception.

[0115] For example, suppose the first device needs to allocate total scheduling resources to K users, and the number of OFDM symbols corresponding to each user is n. k (k = 0, 1, ..., K-1). The total number of OFDM symbols for the scheduled resources, i.e., the first value is...

[0116] The first device needs to identify the target customer among these K users. The target customer refers to the user who needs to modulate the signal using the first modulation method described below. The number of OFDM symbols allocated to the target customer by the first device is the aforementioned N. The proportion of OFDM symbols allocated is then calculated:

[0117] For example, the first interval can satisfy the following formula: Ε=floor(Δ1),

[0118] Where E is the first interval, and the unit can be OFDM symbol; Δ1 can be the ratio of the first value to N; floor represents the floor operation.

[0119] For example, if N is 2 and the first value is 14, then E can be 7 and the first interval can be 7 OFDM symbols.

[0120] For example, if N is 2 and the first value is 14, then E can be 7 and the first interval can be 7 OFDM symbols.

[0121] For example, if N is 3 and the first value is 14, then E can be 4 and the first interval can be 4 OFDM symbols.

[0122] This example demonstrates that, due to the simplicity of the formula, the first device can quickly determine the first interval. Furthermore, the first interval calculated using this formula is as close as possible to the ratio of N OFDM symbols in the total scheduling resources, thus ensuring that the entire time slot of the total scheduling resources is filled as much as possible. This maximizes the utilization of the entire time slot, achieving maximum temporal diversity gain and improving performance when sensing parameters such as speed.

[0123] Optionally, when E=1, the scheduling of the sensing signal is a continuous OFDM symbol scheduling of NR.

[0124] In one possible implementation 1A, the first device represents the total scheduling resources for S devices, where S is a positive integer. The S devices may include a second device. The position of the first OFDM symbol among the N OFDM symbols can be determined based on the number of devices (i.e., S) among the S devices; or, the position of the first OFDM symbol among the N OFDM symbols is related to the number of devices among the S devices; or, the first device can determine the position of the first OFDM symbol among the N OFDM symbols based on the number of devices among the S devices. The position of the first OFDM symbol among the N OFDM symbols can be replaced with: the first OFDM symbol among the N OFDM symbols, or the starting position of the N OFDM symbols. The first OFDM symbol among the N OFDM symbols can be referred to as (or can be replaced with) the starting OFDM symbol among the N OFDM symbols. The first OFDM symbol among the N OFDM symbols can be the OFDM symbol with the smallest time domain length among the N OFDM symbols, or it can be the OFDM symbol with the smallest identity (ID) or index among the N OFDM symbols.

[0125] In one possible implementation 1B, the first OFDM symbol among the N OFDM symbols can belong to the S OFDM symbols with the smallest time domain length in the first time slot of the total scheduling resources; or, the first OFDM symbol among the N OFDM symbols can belong to the S OFDM symbols with the smallest ID or index in the first time slot of the total scheduling resources. For example, if the first device is a total scheduling resource for 3 devices, then the first OFDM symbol among the N OFDM symbols can belong to the 3 OFDM symbols with the smallest time domain length in the first time slot of the total scheduling resources.

[0126] Optionally, the first device can determine the position of the first OFDM symbol among the N OFDM symbols in the S OFDM symbols based on the order in which the second device is ordered among the S devices in the first order; or, the first device can determine which of the S OFDM symbols the first OFDM symbol is based on the order in which the second device is ordered among the N OFDM symbols. The first order can be the order in which the first device schedules resources for the S devices.

[0127] In some examples, the second device is ordered as R in the first sequence, where R is a positive integer less than or equal to S. The first OFDM symbol among the N OFDM symbols can be the R-th OFDM symbol among the S OFDM symbols. For example, the first device is the total scheduling resource for devices #1 to #4 in sequence. If the second device is device #1, then R is 1, and the first OFDM symbol among the N OFDM symbols can be the first OFDM symbol among the four OFDM symbols with the smallest time domain length in the total scheduling resource. If the second device is device #2, then R is 2, and the first OFDM symbol among the N OFDM symbols can be the second OFDM symbol among the four OFDM symbols with the smallest time domain length in the total scheduling resource. And so on, without further elaboration.

[0128] In other examples, the second device is ordered as R in the first sequence, where R is a positive integer less than or equal to S. The first OFDM symbol among the N OFDM symbols can be the (S-R+1)th OFDM symbol among the S OFDM symbols. For example, the first device is the total scheduling resource for devices #1 to #4 in sequence. If the second device is device #1, then R is 1, and the first OFDM symbol among the N OFDM symbols can be the fourth OFDM symbol among the four OFDM symbols with the smallest time domain length in the total scheduling resource. If the second device is device #2, then R is 2, and the first OFDM symbol among the N OFDM symbols can be the third OFDM symbol among the four OFDM symbols with the smallest time domain length in the total scheduling resource. And so on, without further elaboration.

[0129] Through the above implementation method, the first device can quickly determine the position of the first OFDM symbol among the N OFDM symbols based on the number of devices in the S devices.

[0130] Optionally, the above implementation 1A can be replaced by implementation 1A': the first device is a total scheduling resource for S devices, where S is a positive integer. The S devices may include a second device. The position of the last OFDM symbol among the N OFDM symbols can be determined based on the number of devices (i.e., S) among the S devices; in other words, the position of the last OFDM symbol among the N OFDM symbols is related to the number of devices among the S devices; or, the first device can determine the position of the last OFDM symbol among the N OFDM symbols based on the number of devices among the S devices.

[0131] The specific details of implementation method 1A' can be found in the description of implementation method 1A above. The only difference is that the first OFDM symbol in the N OFDM symbols is replaced with the last OFDM symbol in the N OFDM symbols, the starting OFDM symbol in the N OFDM symbols is replaced with the ending OFDM symbol in the N OFDM symbols, the starting position of the N OFDM symbols is replaced with the ending position of the N OFDM symbols, and the smallest value is replaced with the largest value. Further details are omitted here. In this way, the first device can quickly determine the position of the last OFDM symbol in the N OFDM symbols based on the number of devices in the S devices.

[0132] In some examples, the position of the first OFDM symbol among the N OFDM symbols, N, and the first interval between adjacent OFDM symbols among the N OFDM symbols can be used to determine the positions of the N OFDM symbols; alternatively, the first device can determine the positions of the N OFDM symbols based on the position of the first OFDM symbol among the N OFDM symbols, N, and the first interval between adjacent OFDM symbols among the N OFDM symbols. The position of the first OFDM symbol among the N OFDM symbols can be determined according to implementation method A1, N can be determined according to implementation method A1 above, and the first interval can be determined according to the method for determining the first interval above, which will not be elaborated further. For example, if the first OFDM symbol among the N OFDM symbols is the first OFDM symbol among the four OFDM symbols with the smallest time domain length in the first time slot of the total scheduling resources, and N is 100, and the first interval between adjacent OFDM symbols among the N OFDM symbols is four OFDM symbols, then the N OFDM symbols include the 1st, 5th, 9th, ..., 397th OFDM symbols in the first time slot of the total scheduling resources.

[0133] In other examples, the position of the last OFDM symbol among the N OFDM symbols, N, and the first interval between adjacent OFDM symbols among the N OFDM symbols can be used to determine the position of the N OFDM symbols; alternatively, the first device can determine the position of the N OFDM symbols based on the position of the last OFDM symbol among the N OFDM symbols, N, and the first interval between adjacent OFDM symbols among the N OFDM symbols. The position of the last OFDM symbol among the N OFDM symbols can be determined according to implementation A1, N can be determined according to implementation A1' above, and the first interval can be determined according to the method for determining the first interval above, which will not be elaborated further. For example, if the total scheduling resources include 400 OFDM symbols in the first time slot, and the last OFDM symbol among these N OFDM symbols is the first of the four OFDM symbols with the largest time domain length in the first time slot of the total scheduling resources, and N is 100, and the first interval between adjacent OFDM symbols among these N OFDM symbols is four OFDM symbols, then these N OFDM symbols include the 1st, 5th, 9th, ..., 397th OFDM symbols in the first time slot.

[0134] Using the example above, the first device can accurately determine the location of the N OFDM symbols.

[0135] Optionally, the first information can be traditional information or new information, without limitation. The first information can be broadcast information or unicast information. For example, the first information can be downlink control information (DCI), sidelink control information (SCI), or media access control element (MAC CE).

[0136] The following explains how the first information indicates the first resource; you can refer to the following method.

[0137] In optional mode A1, taking Figure 5A as an example, the first information may include: a first group of bits, a second group of bits, and a third group of bits.

[0138] Based on the first set of bits, the second set of bits, and the third set of bits, the first device can determine the positions of N OFDM symbols on the first time slot included in the first resource. For example, the first device can determine the positions of the N OFDM symbols by one or more of implementations 2A to 2C:

[0139] In one possible implementation 2A, the first set of bits can be used to indicate the position of the first OFDM symbol among the N OFDM symbols, the second set of bits can be used to indicate the first interval, and the third set of bits can be used to indicate the position of the last OFDM symbol among the N OFDM symbols.

[0140] Taking Figure 5B as an example, the first group of bits consists of the first two bits. The first group of bits can indicate the first log(A) bits, where A represents the total number of OFDM symbols scheduled. The first group of bits is used to indicate the position of the first OFDM symbol among the N OFDM symbols. The second group of bits consists of the 3rd to 6th bits. The first group of bits can be the middle log(E) bits, where E is the first interval calculated above. The second group of bits indicates the interval between adjacent OFDM symbols among the N OFDM symbols. The third group of bits consists of the 7th to 18th bits, used to indicate the position of the last OFDM symbol among the N OFDM symbols.

[0141] The number of bits in the first group of bits can be related to the maximum number of devices that the first device can schedule (hereinafter referred to as Fmax); or, the number of bits in the first group of bits can be determined based on Fmax. For example, the number of bits in the first group of bits can be floor(log(Fmax))+1 or ceiling(log(Emax)), where ceiling represents rounding up. For example, if Fmax is 4, then the number of bits in the first group of bits can be 2. Fmax can be preset, such as as specified by the protocol; or it can be determined by the first device; or it can be notified to the first device by other devices (e.g., core network devices). If Fmax is determined by the first device, the first device can also send Fmax indication information to the second device; if Fmax is notified to the first device by other devices (e.g., core network devices), the other devices or the first device can send Fmax indication information to the second device.

[0142] The number of bits in the second set of bits can be related to the maximum interval between all schedulable OFDM symbols (hereinafter denoted as Emax); or, the number of bits in the second set of bits can be determined based on Emax. For example, the number of bits in the second set of bits can be floor(log(Emax))+1 or ceiling(log(Emax)). For instance, if Emax is 274, then the number of bits in the second set of bits can be 8. Emax can be preset, such as as specified by the protocol; or it can be determined by the first device; or it can be notified to the first device by other devices (e.g., core network devices). If Emax is determined by the first device, the first device can also send Emax indication information to the second device; if Emax is notified to the first device by other devices (e.g., core network devices), the other devices or the first device can send Emax indication information to the second device.

[0143] The number of bits in the third bit group can be related to the Fast Fourier Transform (FFT) size; or, in other words, the number of bits in the third bit group can be determined based on the FFT size. For example, the number of bits in the third bit group can be log(FFT size). For instance, if the FFT size is 1024, the number of bits in the third bit group can be 10. Or, for example, if the FFT size is 2048, the number of bits in the third bit group can be 11. Yet another example is if the FFT size is 4096, the number of bits in the third bit group can be 12. The FFT size can be preset, such as as specified by the protocol; or it can be determined by the first device; or it can be notified to the first device by other devices (e.g., core network devices). If the FFT size is determined by the first device, the first device can also send FFT size indication information to the second device; if the FFT size is notified to the first device by other devices (e.g., core network devices), the other devices or the first device can send FFT size indication information to the second device.

[0144] It should be understood that the number of bits in the first group, the second group, and the third group can be determined in some or all other ways, as long as the first and second devices have the same understanding. For example, the number of bits in the first group can be related to the number of devices scheduled by the first device (hereinafter denoted as F). For details, refer to the explanation above regarding "the number of bits in the first group can be related to the maximum number of devices the first device can schedule (hereinafter denoted as Fmax)," only replacing Fmax with S, and will not be repeated here. Optionally, in this example, the first device can send an indication message of S to the second device. As another example, the number of bits in the second group can be related to the first interval (hereinafter denoted as E). For details, refer to the explanation above regarding "the number of bits in the second group can be related to the maximum interval (hereinafter denoted as Emax)," only replacing Emax with E, and will not be repeated here. Optionally, in this example, the first device can send an indication message of E to the second device. It should be understood that the above examples can be combined or independent of each other.

[0145] In one possible implementation 2B, the first set of bits can be used to indicate the position of the first OFDM symbol among N OFDM symbols, the second set of bits can be used to indicate the first interval, and the third set of bits can be used to indicate N.

[0146] Taking Figure 5C as an example, the first group of bits consists of the first two bits, which are used to indicate the position of the first OFDM symbol among the N OFDM symbols. The second group of bits consists of the 3rd to 6th bits, which are used to indicate the interval between adjacent OFDM symbols among the N OFDM symbols. The third group of bits consists of the 7th to 13th bits, which are used to indicate N.

[0147] The specific contents of the first group of bits and the second group of bits can be found in the description of the first group of bits and the second group of bits in Implementation Method 2A, and will not be repeated here.

[0148] Optionally, the number of bits in the third set of bits may be related to the number of OFDM symbols (hereinafter denoted as Fmax) that the first device can schedule for the second device; or, the number of bits in the third set of bits may be determined based on Fmax. Fmax is, for example, the number of OFDM symbols included in the total scheduling resources. For example, the number of bits in the third set of bits may be floor(log(Fmax))+1 or ceiling(log(Fmax)). Fmax may be preset, such as as specified by the protocol; or it may be determined by the first device; or it may be notified to the first device by other devices (e.g., core network devices). If Fmax is determined by the first device, the first device may also send Fmax indication information to the second device; if Fmax is notified to the first device by other devices (e.g., core network devices), the other devices or the first device may send Fmax indication information to the second device.

[0149] In one possible implementation 2C, the first set of bits can be used to indicate the position of the last OFDM symbol among multiple OFDM symbols, the second set of bits can be used to indicate the first interval, and the third set of bits can be used to indicate N.

[0150] Taking Figure 5D as an example, the first group of bits is the first 12 bits, which indicates the position of the last OFDM symbol among multiple OFDM symbols. The second group of bits is the 13th to 16th bits, which are used to represent the interval between adjacent OFDM symbols among the N OFDM symbols. The third group of bits is the 17th to 23rd bits, which are used to represent N in the N OFDM symbols.

[0151] The specific content of the first group of bits can be found in the description of the third group of bits in Method 2A; the specific content of the second group of bits can be found in the description of the second group of bits in Method 2A; and the specific content of the third group of bits can be found in the description of the third group of bits in Method 2B. Further details will not be provided here.

[0152] In methods 2A to 2C, the specific details of the position of the first OFDM symbol among the plurality of OFDM symbols can be found in the description of the position of the first OFDM symbol among the plurality of OFDM symbols in implementation method 1A; the specific details of the position of the last OFDM symbol among the plurality of OFDM symbols can be found in the description of the position of the last OFDM symbol among the plurality of OFDM symbols in implementation method 1A', and will not be repeated here.

[0153] Optionally, in mode A1, the first, second, and third groups of bits can be consecutive or non-consecutive. The order of the first, second, and third groups of bits in the first information can be varied. For example, the first information may include the first, second, and third groups of bits sequentially, as shown in Figures 5B to 5D. Another example is that the first information may include the second, first, and third groups of bits sequentially. Yet another example is that the first information may include the third, second, and first groups of bits sequentially. It should be understood that these are merely examples, and the order of the first, second, and third groups of bits can also be other possible and is not limited.

[0154] Optionally, the order of the first, second, and third sets of bits is not limited. That is, the sequence number or order of each set of bits in one or more time slots is not important. For example, the second set of bits can be in the third set of bits or after the third set of bits.

[0155] By implementing method A1, the first information can accurately indicate the time-domain location of the multiple OFDM symbols through the first group of bits, the second group of bits, and the third group of bits. Furthermore, this method provides multiple ways to indicate the time-domain location of the multiple OFDM symbols, offering considerable flexibility.

[0156] In optional mode A2, the first information may indicate a first mode, which may be used to determine a first resource.

[0157] Optionally, at least one pattern may correspond to at least one resource pattern. First information may indicate a first pattern. The first pattern belongs to the at least one pattern, and the first pattern corresponds to a first resource pattern in the at least one resource pattern. The first resource may be the resource corresponding to (or indicated by) the first resource pattern. The correspondence between at least one pattern and at least one resource pattern (hereinafter referred to as the first correspondence) may be pre-defined, such as as specified by a protocol; or it may be determined by the first device; or it may be notified to the first device by other devices (e.g., core network devices). If the first correspondence is determined by the first device, the first device may also send indication information of the first correspondence to a second device; if the first correspondence is notified to the first device by other devices (e.g., core network devices), the other devices or the first device may send indication information of the first correspondence to the second device.

[0158] Table 1 illustrates one possible example of the first correspondence. For instance, if the first mode is mode 3, then the first OFDM symbol among the plurality of OFDM symbols could be the first OFDM symbol on the first time slot in the total scheduling resources, with an interval of 4 OFDM symbols between adjacent OFDM symbols, as shown in Table 1. As another example, if the first mode is mode 2, then the first OFDM symbol among the plurality of OFDM symbols could be the second OFDM symbol on the first time slot in the total scheduling resources, with an interval of 2 OFDM symbols between adjacent OFDM symbols. For another example, if the first mode is mode 3, then the first OFDM symbol among the plurality of OFDM symbols could be the first OFDM symbol on the first time slot in the total scheduling resources, with an interval of 4 OFDM symbols between adjacent OFDM symbols, as shown in Table 1. It should be understood that Table 1 uses 7 modes and 7 resource patterns as examples; the number of modes and resource patterns can be more or less, without limitation.

[0159] Table 1

[0160] Optionally, the number of bits in the first information used to indicate the first mode (hereinafter referred to as the number #1) may be related to the number of modes in at least one mode (hereinafter referred to as the number #2); or, the number #1 may be determined based on the number #2. For example, the number #1 may be floor(log(number #2))+1 or ceiling(log(number #2)). For instance, if the number #2 is 4, then the number #1 may be 2, meaning that the first information may use 2 bits to indicate the first mode, thereby indicating multiple OFDM symbols on the first time slot included in the first resource.

[0161] Optionally, in mode A2, the pattern can be replaced with other names, such as type, index, etc.; the resource pattern can be replaced with other names, such as pattern.

[0162] In this method A2, the first information can accurately indicate the time-domain location of multiple OFDM symbols by indicating the first mode. Furthermore, in this method, the first information can indicate the first mode with fewer bits, thereby saving signaling overhead.

[0163] Optionally, in mode A1 or mode A2, the first information may also indicate the first time slot. For example, the first information may be the order of the first time slot among all time slots or the number of the first time slot. In this way, after receiving the first information, the second device can quickly and accurately determine the position of the multiple OFDM symbols based on the first time slot and the time domain position of the multiple OFDM symbols.

[0164] S302: The first device can transmit sensing signals;

[0165] Correspondingly, the second device can transmit the sensing signal.

[0166] It should be noted that the sensing signal can be carried within the multiple OFDM symbols. The sensing signal can be modulated according to a first modulation scheme. Specifically, the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme can be equal; in other words, the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are constant modulus. Alternatively, the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme can be less than or equal to a first threshold. The first threshold can be preset, such as as specified in a protocol; or it can be determined by the first device; or it can be notified to the first device by other devices (e.g., core network equipment); or the order of the first modulation scheme is less than a second threshold. For example, the first modulation scheme can be PSK or P-QAM. Among them, PSK can be a traditional PSK, for example, PSK can be one of the following: 2PSK, 4PSK, 16PSK or 64PSK, etc.; or, PSK can be an evolution of the traditional PSK, and the name of the evolved PSK may change or remain the same; or, PSK can be a new PSK.

[0167] In some examples, a first device can transmit a sensing signal; correspondingly, a second device can receive the sensing signal. Optionally, the first device can also receive the sensing signal (or the echo signal of the sensing signal). That is, the first device can both transmit and receive the sensing signal (or the echo signal of the sensing signal). In this way, the first device can perform sensing based on the received sensing signal. For example, the first device transmits a sensing signal, which is transmitted to a sensing target and, after being acted upon by the sensing target (e.g., reflected, diffracted, or scattered), can reach the first device. The sensing target can be any object in the environment capable of reflecting, diffracting, or scattering electromagnetic waves. For example, the sensing target can be a stationary object such as a mountain, forest, or building, or a movable object such as a vehicle, drone, pedestrian, or terminal device; there is no limitation.

[0168] In other examples, the second device may transmit a sensing signal; correspondingly, the first device may receive the sensing signal. Optionally, the second device may also receive the sensing signal (or the echo signal of the sensing signal). That is, the second device may both transmit and receive the sensing signal (or the echo signal of the sensing signal). In this way, the second device can perform sensing based on the received sensing signal. For example, the second device transmits a sensing signal, which is transmitted to the sensing target and, after being acted upon by the sensing target (e.g., reflected, diffracted, or scattered), can reach the second device.

[0169] Optionally, S302 can be replaced by one of the following: the first device can transmit a sensing signal according to the plurality of OFDM symbols; correspondingly, the second device can transmit the sensing signal according to the plurality of OFDM symbols. Alternatively, the first device can transmit a sensing signal; correspondingly, the second device can transmit the sensing signal. The sensing signal can be carried in a first resource. Alternatively, the first device can transmit a sensing signal according to the first resource; correspondingly, the second device can transmit the sensing signal according to the first resource.

[0170] Optionally, in S302, the sensing signal can be replaced with: data, or modulation symbols containing or carrying data, such as the N OFDM symbols. The data can be used for sensing; or the modulation symbols can be used for sensing.

[0171] The above describes how the first information can be used to schedule the first resource for the second device. Optionally, the first information can also be used to schedule resources for other devices. For details, please refer to the following implementation:

[0172] In one possible implementation, in S301a, the first information can also be used to schedule a second resource for the third device; in other words, the first information is also used to indicate the second resource, which is a resource scheduled for the third device. Accordingly, the third device can receive the first information, as shown in S301b of FIG3. The second resource may include M OFDM symbols on the first time slot, where M is a positive integer. The interval between adjacent OFDM symbols among the M OFDM symbols is a second interval; or the M OFDM symbols are equally spaced; or the M OFDM symbols are uniformly distributed. The second interval and the first interval may be the same or different.

[0173] Taking Figure 6 as an example, the third device is user 2's device, and the second device is user 1's device. The first resource may include multiple OFDM symbols on a slot, and these multiple OFDM symbols include the M OFDM symbols, where the M OFDM symbols are the white-filled rectangles in Figure 6. The OFDM symbols other than the M OFDM symbols are the aforementioned N OFDM symbols, where the N OFDM symbols are the black-filled rectangles in Figure 6. The interval between adjacent OFDM symbols is a black-filled rectangle, i.e., one OFDM symbol.

[0174] In this approach, the method shown in Figure 3 may further include:

[0175] S303: The first device transmits the first data; correspondingly, the third device transmits the first data. The first data can be carried in M ​​OFDM symbols.

[0176] The first data may be modulated according to a second modulation scheme. The second modulation scheme may be one of the following: 16QAM, 64QAM, or 256QAM.

[0177] In some examples, the order of the second modulation scheme may be greater than or equal to the order of the first modulation scheme. For example, the second modulation scheme may be one of the following: 16QAM, 64QAM, or 256QAM; the first modulation scheme is QPSK with an order of 4, and the order of the second modulation scheme is greater than the order of the first modulation scheme. Another example is that both the first and second modulation schemes are QPSK, and the order of the second modulation scheme is equal to the order of the first modulation scheme, or the amplitude of the second modulation scheme.

[0178] In some examples, the constellation diagram corresponding to the second modulation scheme contains constellation points where the amplitude difference is less than or equal to a third threshold. The third threshold can be pre-set, such as as specified in the protocol; or it can be determined by the first device; or it can be notified to the first device by other devices (e.g., core network equipment). Optionally, the third threshold can be greater than or equal to the first threshold. For example, the second modulation scheme is QAM. Here, QAM can be a traditional QAM, for example, QAM can be one of the following: 16QAM, 64QAM, or 256QAM; or, QAM can be an evolution of traditional QAM, where the name of the evolved QAM may change or remain the same; or, QAM can be a new QAM.

[0179] In other examples, the order of the second modulation scheme is greater than or equal to the fourth threshold. The third threshold can be preset, such as as specified by the protocol; or it can be determined by the first device; or it can be notified to the first device by other devices (such as core network devices). Optionally, the fourth threshold can be greater than or equal to the second threshold.

[0180] In some implementations, a first device can transmit first data; correspondingly, a third device can receive the first data. In some examples, the first data can be used for communication. Optionally, this example can be applied to at least one of the following situations: the order of the second modulation scheme is greater than the order of the first modulation scheme; or, there are constellation points in the constellation diagram corresponding to the second modulation scheme with an amplitude difference greater than a third threshold; or, the order of the second modulation scheme is greater than or equal to a fourth threshold. In other examples, the first data can be used for sensing. Optionally, this example can be applied to at least one of the following situations: the order of the second modulation scheme is greater than or equal to the order of the first modulation scheme; or, there are constellation points in the constellation diagram corresponding to the second modulation scheme with an amplitude difference greater than a third threshold; or, the order of the second modulation scheme is greater than or equal to a fourth threshold. Optionally, in this example, the first device can also receive the first data (or the echo signal of the first data). That is, the first device can transmit the first data and receive the first data (or the echo signal of the first data). In this way, the first device can perform sensing based on the received first data. For example, a first device sends first data, which is transmitted to a sensing target and can reach the first device after being acted upon by the sensing target (e.g., reflected, diffracted, or scattered).

[0181] In other implementations, a third device can transmit first data; correspondingly, a first device can receive first data. In some examples, the first data can be used for communication. Optionally, this example can be applied to at least one of the following situations: the order of the second modulation scheme is greater than the order of the first modulation scheme; or, there are constellation points in the constellation diagram corresponding to the second modulation scheme with an amplitude difference greater than a third threshold; or, the order of the second modulation scheme is greater than or equal to a fourth threshold. In other examples, the first data can be used for sensing. Optionally, this example can be applied to at least one of the following situations: the order of the second modulation scheme is greater than or equal to the order of the first modulation scheme; or, there are constellation points in the constellation diagram corresponding to the second modulation scheme with an amplitude difference greater than a third threshold; or, the order of the second modulation scheme is greater than or equal to a fourth threshold. Optionally, in this example, the first device can also receive the first data (or the echo signal of the first data). That is, the first device can transmit the first data and receive the first data (or the echo signal of the first data). In this way, the first device can perform sensing based on the received first data. For example, a first device sends first data, which is transmitted to a sensing target and can reach the first device after being acted upon by the sensing target (e.g., reflected, diffracted, or scattered).

[0182] Optionally, S303 can be replaced by one of the following: the first device can transmit first data according to the M OFDM symbols; correspondingly, the third device can transmit the first data according to the M OFDM symbols. Alternatively, the first device can transmit the first data; correspondingly, the third device can transmit the first data. The first data can be carried in a second resource. Alternatively, the first device can transmit the first data according to the second resource; correspondingly, the third device can transmit the first data according to the second resource.

[0183] Optionally, the first data can be replaced with modulation symbols that contain or carry the first data, such as the M OFDM symbols.

[0184] The order of S303 and S302 is not limited.

[0185] In this approach, when the order of the second modulation scheme is greater than that of the first modulation scheme, the sensing signal modulated by the first modulation scheme can be used to ensure sensing performance, while the first data modulated by the second modulation scheme can be used to ensure communication performance, thus balancing sensing and communication requirements. Furthermore, this approach combines existing first and second modulation schemes, such as QPSK and 64-QAM modulation schemes. This method does not change the modulation scheme of the data or signal, therefore requiring no changes to the MCS table, minimizing the impact on standards, and making it easier to be adopted by standards and thus easier to implement. Furthermore, in this approach, both the first and second resources are scheduled at the OFDM symbol level, allowing for flexible scheduling of resources for sensing signals corresponding to low-order modulation schemes (e.g., the first modulation scheme) and data corresponding to high-order modulation schemes (e.g., the second modulation scheme). Compared to schemes that can only schedule resources at the RB level, this approach can control the scheduling of each OFDM symbol. By controlling the spacing between OFDM symbols used to carry sensing signals and the spacing between OFDM symbols used to carry data, the two types of OFDM symbols can be evenly distributed across time slots, thereby fully utilizing time slot resources and improving sensing and communication performance.

[0186] When the order of the second modulation method is equal to the order of the first modulation method, the sensing signal modulated by the first modulation method and the first data modulated by the second modulation method can both be used for sensing, thereby further improving the sensing performance.

[0187] In one possible implementation, the second interval is determined based on the ratio of the first value to M. For details regarding the first value, please refer to the explanation of S301a, which will not be repeated here. Alternatively, the second interval may be related to the ratio of the first value to M; or, the first device may determine the second interval based on the ratio of the first value to M; or, the second interval may be determined based on the first value and M; or, the second interval may be related to the first value and M; or, the first device may determine the second interval based on the first value and M. For example, if M is 7 and the first value is 14, then the second interval may be determined based on 2. In this method, the second interval between adjacent OFDM symbols among the M OFDM symbols may be determined based on the ratio of the first value to M.

[0188] For example, suppose the first device needs to allocate total scheduling resources to K users, and the number of OFDM symbols corresponding to each user is n. k (k = 0, 1, ..., K-1). The total number of OFDM symbols for the scheduled resources, i.e., the first value is...

[0189] The first device needs to identify the target customer among these K users. The target customer refers to the user who needs the signal modulated using the second modulation method described below. The number of OFDM symbols allocated by the first device to this target customer is the aforementioned M. The proportion of OFDM symbols allocated is calculated as follows:

[0190] Based on the above method, the first interval between these M OFDM symbols is adapted to the ratio of the M OFDM symbols in the total scheduling resources. This ratio allows the M OFDM symbols to be distributed as evenly as possible across the entire time slot, rather than being concentrated throughout. This approach allows for better utilization of time slot resources for communication and avoids the impact of scheduling the second resource on the scheduling of the first resource, which is used for transmitting sensing signals. Therefore, this method balances sensing and communication requirements.

[0191] For example, the second interval can satisfy the following formula: F = floor(Δ2),

[0192] Where F can be the second interval, and the unit can be OFDM symbol; Δ2 can be the ratio of the first value and M; floor can represent the floor operation.

[0193] For example, if M is 14, the first value is 28, then F can be 8, and the second interval can be 2 OFDM symbols.

[0194] For example, if M is 8, the first value is 14, then F can be 1, and the second interval can be 1 OFDM symbol.

[0195] Through the above example, the formula is relatively simple, allowing the first device to quickly determine the second interval. Furthermore, the first interval calculated using the formula is as close as possible to the ratio of M OFDM symbols in the total scheduling resources, thus ensuring that the entire time slot of the total scheduling resources is filled as much as possible. This maximizes the utilization of the entire time slot, achieving maximum time-domain diversity gain and improving communication performance.

[0196] Optionally, if the second interval is 1 OFDM symbol, then the M OFDM symbols can be consecutive, or in other words, the M OFDM symbols are consecutive in the time domain.

[0197] Optionally, the specific content of the M OFDM symbols can be found in the description of the N OFDM symbols in S301a, except that the N OFDM symbols are replaced with M OFDM symbols and the second device is replaced with a third device, which will not be repeated here.

[0198] The following explains how the first piece of information instructs the second resource; you can refer to the following method:

[0199] In optional mode B1, as shown in Figure 7A, the first information may include: the fourth group of bits, the fifth group of bits, and the sixth group of bits.

[0200] As mentioned above, the first information can indicate the second resource, and there can be multiple ways to indicate it, such as implementation method 3A or implementation method 3B.

[0201] Optionally, the fourth, fifth, and sixth sets of bits can be used to indicate the M OFDM symbols. In this way, the third device can determine the position of the M OFDM symbols in the first time slot, that is, determine the time domain position of the M OFDM symbols, based on the fourth, fifth, and sixth sets of bits.

[0202] There are several ways in which the fourth, fifth, and sixth groups of bits can indicate the M OFDM symbols, for example, one or more of modes 3A to 3C can be used.

[0203] In one possible implementation 3A: the fourth set of bits can be used to indicate the position of the first OFDM symbol among the M OFDM symbols, the fifth set of bits can be used to indicate the second interval, and the sixth set of bits can be used to indicate the position of the last OFDM symbol among the M OFDM symbols.

[0204] Taking Figure 7B as an example, the fourth group of bits is the first bit, which is used to indicate the position of the first OFDM symbol among the M OFDM symbols. The fifth group of bits consists of the 2nd to 5th bits, which are used to indicate the interval between adjacent OFDM symbols among the M OFDM symbols. The sixth group of bits consists of the 6th to 19th bits, which are used to indicate the position of the last OFDM symbol among the M OFDM symbols.

[0205] In one possible implementation 3B: the fourth set of bits can be used to indicate the position of the first OFDM symbol among the M OFDM symbols, the fifth set of bits can be used to indicate the second interval, and the sixth set of bits can be used to indicate M.

[0206] Taking Figure 7C as an example, the fourth group of bits is the first bit, which is used to indicate the position of the first OFDM symbol among the M OFDM symbols. The fifth group of bits consists of the 2nd to 5th bits, which are used to indicate the interval between adjacent OFDM symbols among the M OFDM symbols. The sixth group of bits consists of the 6th to 12th bits, which are used to indicate the M.

[0207] In one possible implementation 3C: the fourth set of bits can be used to indicate the position of the last OFDM symbol among the M OFDM symbols; the fifth set of bits can be used to indicate the second interval; and the sixth set of bits can be used to indicate M.

[0208] Taking Figure 7C as an example, the fourth group of bits consists of the first 13 bits, which are used to indicate the position of the last OFDM symbol in the M OFDM symbols. The fifth group of bits consists of the 14th to 17th bits, which are used to indicate the interval between adjacent OFDM symbols in the M OFDM symbols, i.e., the second interval. The sixth group of bits consists of the 18th to 24th bits, which are used to indicate the M.

[0209] The specific contents of the fourth, fifth, and sixth bit groups can be found in the descriptions of the first, second, and third bit groups in method a1, respectively. The only difference is that the first bit group is replaced by the fourth bit group, the second bit group by the fifth bit group, the third bit group by the sixth bit group, N OFDM symbols are replaced by M OFDM symbols, the first interval is replaced by the second interval, and the second device is replaced by the third device. Further details are omitted here. Additionally, in the first information, the order of any bit group from the fourth, fifth, and sixth bit groups relative to any bit group from the first, second, and third bit groups is not restricted.

[0210] By implementing method B1, the first information can accurately indicate the time-domain position of the M OFDM symbols through the fourth, fifth, and sixth groups of bits. Furthermore, this method provides multiple ways to indicate the time-domain position of the M OFDM symbols, offering greater flexibility.

[0211] In optional mode B2: the first information may indicate the second mode, which may be used to determine the second resource.

[0212] The details of method B2 are the same as those of method A2, except that the first mode is replaced with the second mode, the first resource is replaced with the second resource, and the second device is replaced with the third device. Further details will not be repeated here.

[0213] Through this implementation method B2, the first information can accurately indicate the time-domain location of the M OFDM symbols included in the second resource by indicating the second mode. Furthermore, in this method, the first information can indicate the second mode with fewer bits, thereby saving signaling overhead.

[0214] Optionally, in mode B1 or mode B2, the first information may also indicate the first time slot. Thus, after receiving the first information, the third device can quickly and accurately determine the positions of the M OFDM symbols based on the first time slot and the time-domain positions of the M OFDM symbols.

[0215] In some examples, the first information may be information broadcast by the first device. In this example, the first information may include: information indicating a first resource (hereinafter referred to as information #1), and information indicating a second resource (hereinafter referred to as information #2). Information #1 and information #2 may be carried in the same message or in different messages, without restriction. If information #1 and information #2 are carried in different messages, the order in which information #1 and information #2 are sent is not limited.

[0216] In other examples, the first information may be unicast information from the first device. For example, the first information may be information sent by the first device to the second device. In this example, the first information can also be used to schedule a second resource for the third device, which can be replaced by: the first device sending the second information; correspondingly, the third device receiving the second information, which can be used to schedule a second resource for the third device. In other words, the second information can be used to indicate the second resource, which is a resource scheduled for the third device. The specific content of the second information indicating the second resource can be referred to the above explanation of the use of the first information to indicate the second resource, and will not be repeated here. The order in which the first device sends the second information and the first information is not limited.

[0217] In one possible implementation, the first information is also used to schedule a third resource, or the first information can be used to indicate a third resource, which is a resource scheduled for a fourth device. Accordingly, the third device can receive the first information, as shown in S301c of FIG3. The third resource includes K OFDM symbols on the first time slot, where K is a positive integer, and each of the K OFDM symbols is adjacent to one of the N OFDM symbols; or each of the K OFDM symbols forms a group with one of the N OFDM symbols.

[0218] For example, referring to Figure 8, the third resource may include multiple OFDM symbols on a slot. These multiple OFDM symbols include symbols for carrying the demodulation reference signal (DMRS), i.e., the K OFDM symbols (the black-filled squares in Figure 8), and symbols for carrying QPSK, i.e., the N OFDM symbols (the gray-filled squares in Figure 8). In Figure 8, each symbol carrying the DMRS is adjacent to a symbol carrying the QPSK.

[0219] Based on the above implementation, by making each of the K OFDM symbols adjacent to one of the N OFDM symbols, the adjacent symbols can be grouped into pairs, and thus can be scheduled in a group. The signals carried by the adjacent symbols can also be bound together.

[0220] In one possible implementation, the first information includes: position distribution information of the demodulation reference signal, which includes information describing the positions of the N OFDM symbols; or the first information includes: position index information of the demodulation reference signal, which includes information describing the positions of the N OFDM symbols; or the first information includes: a position index table of the demodulation reference signal, which has a column describing the positions of the N OFDM symbols.

[0221] For example, please refer to Figure 9, which is a location distribution diagram of DMRS. An additional column has been added to this location distribution diagram to describe the location of OFDM symbols carrying signals modulated by the first modulation method.

[0222] In this way, the signal modulated by the first modulation method can be paired with the DMRS to form a pair, so that both are evenly distributed throughout the slot, thereby improving sensing performance.

[0223] For example, add a column to the existing NR standard's DMRS location distribution table to configure the location of OFDM symbols in the time domain of QPSK signals.

[0224] In one possible implementation, S302 may include: if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, the first device may transmit a sensing signal in the at least one OFDM symbol, and correspondingly, the second device may transmit the sensing signal in the at least one OFDM symbol. Alternatively, if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, the first device may transmit a sensing signal in the overlapping portion, and correspondingly, the second device may transmit the sensing signal in the at least one OFDM symbol. Alternatively, if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, the first device may puncture the overlapping portion in the resource used to transmit the first signal, and correspondingly, the second device may puncture the overlapping portion in the resource used to transmit the first signal. The first signal may include a reference signal and / or a synchronization signal and a physical broadcast channel (PBCH) block (SS / PBCH block, SSB). The reference signal can be a traditional reference signal, such as one of the following: PRS, DMRS, PTRS, SRS, or CSI-RS; or, the reference signal can be an evolution of a traditional reference signal, the name of which may change or remain the same; or, the reference signal can be a new reference signal or a reference signal to be defined in the future. The SSB can be a traditional SSB, or an evolution of a traditional SSB, the name of which may change or remain the same.

[0225] For example, as shown in the first row of Figure 10, the first resource may include multiple OFDM symbols on symbol 1 filled with diagonal lines; as shown in the second row of Figure 12, the resource for transmitting the first signal may include OFDM symbols on symbol 1 filled with horizontal lines. The resources in the first and second rows of Figure 10 are all resources on symbol 1, and the OFDM symbols with the same frequency in the first and second rows are the same OFDM symbols. There is an overlap between the first resource and the resource for transmitting the first signal; this overlap can be used to transmit sensing signals.

[0226] In this method, if there is an overlap between the first resource and the resource used to transmit the first signal, the overlapping portion can be used to transmit the sensing signal, thereby reducing or avoiding interference between the first signal and the sensing signal. Furthermore, in this method, the overlapping portion can be used to transmit the sensing signal, thus ensuring the transmission of the sensing signal and improving sensing performance.

[0227] In some implementations, the method shown in Figure 3 may also include:

[0228] S305: The first device can send the first instruction information; correspondingly, the second device can receive the first instruction information.

[0229] The first indication information can be used to indicate that if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, then a sensing signal is transmitted in at least one OFDM symbol. The indication can be made in various ways. In some examples, if the value of the first indication information is M (e.g., 0 or 1), then the first indication information can be used to indicate that if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, then a sensing signal is transmitted in at least one OFDM symbol. In other examples, the first indication information can be a message specifically designed to indicate that "if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, then a sensing signal is transmitted in at least one OFDM symbol."

[0230] The first instruction information can be carried in a traditional message or in a new message. The first instruction information can be broadcast or unicast. For example, the first instruction information can be carried in DCI, SCI, or MAC CE. The first instruction information and the first information can be carried in the same message or in different messages. If the first instruction information and the first information are carried in different messages, the order of S305 and S301a is not limited.

[0231] Optionally, S305 can precede S302.

[0232] Through this implementation, the second device can accurately determine, based on the first indication information, that if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, then the sensing signal will be transmitted in at least one OFDM symbol. Furthermore, since the first indication information is sent by the first device, the flexibility of the first device in managing (or configuring) the second device is improved.

[0233] In other implementations, it can be pre-defined (e.g., specified in the protocol) that if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, then the sensing signal is transmitted in at least one OFDM symbol. In this way, there is no need to transmit information between the first and second devices indicating that "if at least one OFDM symbol in the first resource overlaps with a resource used to transmit the first signal, then the sensing signal is transmitted in at least one OFDM symbol," thereby saving signaling overhead.

[0234] The sensing signal is modulated using the method shown in Figure 3 through a first modulation scheme. Since the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold, the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are not significantly different, resulting in lower sidelobe energy of the corresponding distance ambiguity function. This reduces interference with other targets and improves sensing performance.

[0235] Furthermore, in this method, the granularity of resource scheduling is OFDM symbols, rather than RBs, thereby improving the fineness of scheduling time-domain resources used for transmitting sensing signals and avoiding situations where the scheduling of each OFDM symbol cannot be controlled due to excessively large granularity. In addition, the interval between OFDM symbols used for transmitting sensing signals in this method is fixed, so the OFDM symbols used for transmitting sensing signals are uniformly distributed in the time domain, covering the entire time domain as much as possible, thus maximizing the time-domain resources occupied by the sensing signal. Therefore, this method can improve Doppler resolution and increase the measurement accuracy of parameters such as velocity when sensing, thereby improving the sensing performance of parameters such as velocity.

[0236] The following example, using QPSK as the first modulation method and 64QAM as the second modulation method, illustrates the effect of the method shown in Figure 3.

[0237] Figure 11 illustrates the resources scheduled by the first device for the second and third devices. The first resource scheduled for the second device includes resources filled with diagonal lines, which can be used to transmit sensing signals that can be modulated using QPSK. The second resource scheduled for the third device includes resources filled with rhombuses, which can be used to transmit first data that can be modulated using 64QAM. The modulation scheme shown in Figure 13 can be referred to as QPSK+64QAM.

[0238] Figure 12 illustrates a schematic diagram of sensing and communication performance. The horizontal axis represents the signal-to-noise ratio (SNR), measured in decibels (dB). A higher SNR indicates better communication performance, while a lower SNR indicates worse performance. The vertical axis represents the root mean square error (RMSE), measured in meters (m). A lower RMSE indicates better sensing performance, while a higher RMSE indicates worse performance. Figure 12 shows the sensing and communication performance of three modulation schemes: QPSK+64QAM under existing NR scheduling methods, 8-P-QAM under existing NR scheduling methods, and the time-domain symbol-level scheduling proposed in this application: QPSK+64QAM. As shown in Figure 12, compared with the existing NR scheduling method QPSK+64QAM, the sensing performance achieved in this application is improved. This scheme can achieve similar results to the existing NR scheduling method 8-P-QAM. However, as mentioned above, this application combines existing modulation methods such as QPSK and 64-QAM. This application does not change the modulation method of data or signal, so there is no need to change the modulation coding mechanism MCS table. Compared with 8-P-QAM, this application is more likely to be adopted by the standard.

[0239] The communication method in the embodiments of this application has been described above. The communication device in the embodiments of this application is described below. Please refer to FIG13. One embodiment of the communication device includes:

[0240] Interface unit 1301 is used to send first information, which is used to schedule first resources, the first resources including N OFDM symbols in a first time slot, where N is a positive integer, and the time domain interval between adjacent OFDM symbols in the N OFDM symbols is a first interval; and to transmit sensing signals, which are carried in the N OFDM symbols, and the sensing signals are modulated according to a first modulation scheme, wherein the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold.

[0241] The processing unit 1302 is used to perform operations other than sending and receiving operations.

[0242] Another embodiment of the communication device includes:

[0243] Interface unit 1301 is configured to transmit first information for scheduling first and third resources. The first resource includes N OFDM symbols on a first time slot, where N is a positive integer. The third resource includes K OFDM symbols on the first time slot, where K is a positive integer. Each of the K OFDM symbols is adjacent to one of the N OFDM symbols. It also transmits a sensing signal carried in the N OFDM symbols, which is modulated according to a first modulation scheme. The amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold. Finally, it transmits a demodulation reference signal carried in the K OFDM symbols.

[0244] The processing unit 1302 is used to perform operations other than sending and receiving operations.

[0245] Another embodiment of the communication device includes:

[0246] Interface unit 1301 is used to receive first information, which is used to schedule first resources, the first resources including N OFDM symbols in a first time slot, where N is a positive integer, and the time domain interval between adjacent OFDM symbols in the N OFDM symbols is a first interval; and to transmit sensing signals, which are carried in the N OFDM symbols, and the sensing signals are modulated according to a first modulation method, wherein the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation method are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation method is less than or equal to a first threshold.

[0247] The processing unit 1302 is used to perform operations other than sending and receiving operations.

[0248] Another embodiment of the communication device includes:

[0249] Interface unit 1301 is used to receive first information, which is used to schedule second resources, the second resources including M OFDM symbols in a first time slot, where M is a positive integer, and the time domain interval between adjacent OFDM symbols in the M OFDM symbols is a second interval; and to transmit first data, which is carried in the M OFDM symbols, the first data being modulated according to a second modulation scheme, wherein the order of the second modulation scheme is greater than or equal to the order of the first modulation scheme, and the amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold.

[0250] The processing unit 1302 is used to perform operations other than sending and receiving operations.

[0251] Another embodiment of the communication device includes:

[0252] Interface unit 1301 is configured to receive first information for scheduling first and third resources. The first resource includes N OFDM symbols on a first time slot, where N is a positive integer. The third resource includes K OFDM symbols on the first time slot, where K is a positive integer. Each of the K OFDM symbols is adjacent to one of the N OFDM symbols. It also transmits a sensing signal carried in the N OFDM symbols, which is modulated according to a first modulation scheme. The amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme are equal, or the difference in amplitudes of different constellation points in the constellation diagram corresponding to the first modulation scheme is less than or equal to a first threshold. Finally, it transmits a demodulation reference signal carried in the K OFDM symbols.

[0253] The processing unit 1302 is used to perform operations other than sending and receiving operations.

[0254] The following describes a communication device provided in an embodiment of this application. Please refer to Figure 14, which is a schematic diagram of the structure of a communication device provided in an embodiment of this application. The communication device may be the first device, second device, third device, or fourth device in the above method embodiments, or it may be a chip, chip system, or processor that supports the first device, second device, third device, or fourth device in implementing the above methods. This communication device can be used to implement the methods described in the above method embodiments, and for details, please refer to the description in the above method embodiments.

[0255] The communication device may include one or more processors 1401, which are connected to a memory 1402, an input / output unit 1403, and a bus 1404. The processor 1401 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal, terminal chip, DU or CU, etc.), execute software programs, and process data from the software programs.

[0256] Optionally, the communication device may include one or more memories 1402, which may store instructions that can be executed on the processor 1401, causing the communication device to perform the methods described in the above method embodiments. Optionally, the memories 1402 may also store data. The processor 1401 and the memories 1402 may be configured separately or integrated together.

[0257] Optionally, the communication device may also include a transceiver and an antenna. A transceiver, also called a transceiver unit, transceiver, or transceiver circuit, is used to implement transmission and reception functions. A transceiver may include a receiver and a transmitter; the receiver, also called a receiver circuit, is used to implement the receiving function; the transmitter, also called a transmitter or transmitting circuit, is used to implement the transmitting function.

[0258] In another possible design, the processor 1401 may include a transceiver for implementing receive and transmit functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or for transmitting or relaying signals.

[0259] In another possible design, the processor 1401 may optionally store instructions that, when executed, cause the communication device to perform the methods described in the above method embodiments. The instructions may be stored in the processor 1401; in this case, the processor 1401 may be implemented in hardware.

[0260] In another possible design, the communication device may include circuitry that can perform the transmitting or receiving or communication functions of the first, second, third, or fourth device in the aforementioned method embodiments. The processor and transceiver described in this application embodiment can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-type metal-oxide-semiconductor (NMOS), p-type metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0261] The communication device described in the above embodiments may be a first device, a second device, a third device, or a fourth device, but the scope of the communication device described in the embodiments of this application is not limited thereto, and the structure of the communication device may not be limited to FIG. 14. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be:

[0262] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0263] (2) A collection of one or more ICs, optionally including a storage component for storing data and instructions;

[0264] (3) ASIC, such as modem;

[0265] (4) Modules that can be embedded in other devices;

[0266] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.

[0267] (6) Others, etc.

[0268] For communication devices that can be chips or chip systems, please refer to the structural diagram of the chip shown in Figure 15. The chip 1500 shown in Figure 15 includes a processor 1501 and an interface 1502. Optionally, it may also include a memory 1503. The number of processors 1501 can be one or more, and the number of interfaces 1502 can be multiple.

[0269] For cases where the chip is used to implement the functions of the network device or terminal device in the embodiments of this application:

[0270] The interface 1502 is used to receive or output signals;

[0271] The processor 1501 is used to perform data processing operations on network devices or terminal devices.

[0272] It is understood that some optional features in the embodiments of this application can be implemented independently in certain scenarios without relying on other features, such as the current solution on which they are based, to solve the corresponding technical problems and achieve the corresponding effects. Alternatively, they can be combined with other features as needed in certain scenarios. Correspondingly, the communication device given in the embodiments of this application can also implement these features or functions, which will not be elaborated here.

[0273] It should be understood that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0274] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAK are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0275] This application also provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the methods described in the foregoing embodiments.

[0276] This application also provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in the foregoing embodiments.

[0277] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0278] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0279] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0280] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0281] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0282] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

Claims

1. A communication method characterized by comprising: The method comprises: sending first information, the first information being used for scheduling first resources, the first resources comprising N orthogonal frequency division multiplexing (OFDM) symbols on a first time slot, N being a positive integer, and a time domain interval between adjacent OFDM symbols in the N OFDM symbols being a first interval; transmitting a sensing signal, the sensing signal being carried in the N OFDM symbols, and the sensing signal being modulated according to a first modulation mode, the first modulation mode corresponding to a constellation diagram in which amplitudes of different constellation points are equal, or the first modulation mode corresponding to a constellation diagram in which a difference between amplitudes of different constellation points is less than or equal to a first threshold.

2. The method of claim 1, wherein, The first interval is determined according to a ratio of a first value to the N, the first value being a total number of OFDM symbols in total scheduling resources.

3. The method of claim 2, wherein, The first interval is determined according to a ratio of the first value to the N, and the method comprises: The first interval satisfies the following formula: E=floor(Δ1), wherein E is the first interval, Δ1 is the ratio of the first value to the N, and floor represents a down-rounding operation.

4. The method according to any one of claims 1 to 3, characterized in that, The first information comprises a first group of bits, a second group of bits, and a third group of bits, wherein the first group of bits is used to indicate a position of a first OFDM symbol in the N OFDM symbols, the second group of bits is used to indicate the first interval, and the third group of bits is used to indicate a position of a last OFDM symbol in the N OFDM symbols; or the first group of bits is used to indicate a position of a first OFDM symbol in the N OFDM symbols, the second group of bits is used to indicate the first interval, and the third group of bits is used to indicate the N; or the first group of bits is used to indicate a position of a last OFDM symbol in the N OFDM symbols, the second group of bits is used to indicate the first interval, and the third group of bits is used to indicate the N.

5. The method according to any one of claims 1 to 4, wherein the first information is further used for scheduling second resources, the second resources comprising M OFDM symbols on the first time slot, M being a positive integer, and a time domain interval between adjacent OFDM symbols in the M OFDM symbols being a second interval; the method further comprises: transmitting first data, the first data being carried in the M OFDM symbols, and the first data being modulated according to a second modulation mode, an order of the second modulation mode being greater than or equal to an order of the first modulation mode.

6. The method of claim 5, wherein, The second interval is determined according to a ratio of a first value to the M.

7. The method of claim 6, wherein, The second interval is determined according to a ratio of the first value to the M, and the method comprises: The second interval satisfies the following formula: F=floor(Δ2), wherein F is the second interval, Δ2 is the ratio of the first value to the M, and floor represents a down-rounding operation.

8. The method according to any one of claims 5 to 7, characterized in that, The first information comprises a fourth group of bits, a fifth group of bits, and a sixth group of bits, wherein The fourth group of bits is used to indicate the position of the first OFDM symbol in the M OFDM symbols, the fifth group of bits is used to indicate the second interval, and the sixth group of bits is used to indicate the position of the last OFDM symbol in the M OFDM symbols; or The fourth group of bits is used to indicate the position of the first OFDM symbol in the M OFDM symbols, the fifth group of bits is used to indicate the second interval, and the sixth group of bits is used to indicate the M; or The fourth group of bits is used to indicate the position of the last OFDM symbol in the M OFDM symbols, the fifth group of bits is used to indicate the second interval, and the sixth group of bits is used to indicate the M.

9. The method of any one of claims 1 to 8, wherein The first information is further used to schedule a third resource, and the third resource includes K OFDM symbols in the first time slot, K being a positive integer, and each of the K OFDM symbols is adjacent to one of the N OFDM symbols. The method further includes: transmitting a demodulation reference signal, the demodulation reference signal being carried in the K OFDM symbols.

10. The method of claim 9, wherein, The first information further includes position distribution information of the demodulation reference signal, and the position distribution information includes information used to describe positions of the K OFDM symbols.

11. A communication method, comprising: including: sending first information, the first information being used to schedule a first resource and a third resource, the first resource including N OFDM symbols in a first time slot, N being a positive integer, and the third resource including K OFDM symbols in the first time slot, K being a positive integer, and each of the K OFDM symbols being adjacent to one of the N OFDM symbols; transmitting a sensing signal, the sensing signal being carried in the N OFDM symbols, and the sensing signal being modulated according to a first modulation manner, different constellation points in a constellation diagram corresponding to the first modulation manner having equal amplitudes, or a difference between amplitudes of different constellation points in the constellation diagram corresponding to the first modulation manner being less than or equal to a first threshold value. transmitting a demodulation reference signal, the demodulation reference signal being carried in the K OFDM symbols.

12. The method of claim 11, wherein, The first information includes position distribution information of the demodulation reference signal, and the position distribution information includes information used to describe positions of the K OFDM symbols.

13. A communication method characterized by comprising: including: receiving first information, the first information being used to schedule a first resource, and the first resource including N orthogonal frequency division multiplexing, OFDM, symbols in a first time slot, N being a positive integer, and time domain intervals between adjacent OFDM symbols in the N OFDM symbols all being a first interval; transmitting a sensing signal, the sensing signal being carried in the N OFDM symbols, and the sensing signal being modulated according to a first modulation manner, different constellation points in a constellation diagram corresponding to the first modulation manner having equal amplitudes, or a difference between amplitudes of different constellation points in the constellation diagram corresponding to the first modulation manner being less than or equal to a first threshold value.

14. The method of claim 13, wherein, The first interval is determined according to a ratio of a first value and the N, and the first value is a total number of OFDM symbols in total scheduling resources.

15. The method of claim 14, wherein, The first interval is determined according to a ratio of the first value and the N, and the first interval comprises: The first interval satisfies the following formula: E=floor(Δ1), wherein E is the first interval, Δ1 is the ratio of the first value and the N, and floor represents a down-rounding operation.

16. The method according to any one of claims 13 to 15, characterized in that, The first information comprises a first group of bits, a second group of bits, and a third group of bits, wherein The first group of bits is used to indicate a position of a first OFDM symbol in the N OFDM symbols, the second group of bits is used to indicate the first interval, and the third group of bits is used to indicate a position of a last OFDM symbol in the N OFDM symbols; or The first group of bits is used to indicate a position of a first OFDM symbol in the N OFDM symbols, the second group of bits is used to indicate the first interval, and the third group of bits is used to indicate the N; or The first group of bits is used to indicate a position of a last OFDM symbol in the N OFDM symbols, the second group of bits is used to indicate the first interval, and the third group of bits is used to indicate the N.

17. A method of communication, comprising: comprises: receiving first information, the first information being used to schedule second resources, the second resources comprising M OFDM symbols on a first time slot, M being a positive integer, and a time domain interval between adjacent OFDM symbols in the M OFDM symbols being a second interval; transmitting first data, the first data being carried in the M OFDM symbols, the first data being modulated according to a second modulation mode, the order of the second modulation mode being greater than or equal to the order of a first modulation mode, and in a constellation diagram corresponding to the first modulation mode, amplitudes of different constellation points being equal, or in a constellation diagram corresponding to the first modulation mode, a difference between amplitudes of different constellation points being less than or equal to a first threshold.

18. The method of claim 17, wherein, The second interval is determined according to a ratio of a first value and the M, and the first value is a total number of OFDM symbols in total scheduling resources.

19. The method of claim 18, wherein, The second interval is determined according to a ratio of the first value and the M, and the second interval comprises: The second interval satisfies the following formula: F=floor(Δ2), wherein F is the second interval, Δ2 is the ratio of the first value and the M, and floor represents a down-rounding operation.

20. The method according to any one of claims 17 to 19, characterized in that, The first information comprises a fourth group of bits, a fifth group of bits, and a sixth group of bits, wherein The fourth group of bits is used to indicate a position of a first OFDM symbol in the M OFDM symbols, the fifth group of bits is used to indicate the second interval, and the sixth group of bits is used to indicate a position of a last OFDM symbol in the M OFDM symbols; or The fourth group of bits is used to indicate a position of a first OFDM symbol in the M OFDM symbols, the fifth group of bits is used to indicate the second interval, and the sixth group of bits is used to indicate the M; or The fourth group of bits is used to indicate the position of the last one of the M OFDM symbols, the fifth group of bits is used to indicate the second interval, and the sixth group of bits is used to indicate the M.

21. A method of communication, comprising: Comprising: receiving first information, the first information being used to schedule a first resource and a third resource, the first resource comprising N orthogonal frequency division multiplexing, OFDM, symbols on a first time slot, N being a positive integer, the third resource comprising K OFDM symbols on the first time slot, K being a positive integer, each of the K OFDM symbols being adjacent to one of the N OFDM symbols; transmitting a sensing signal, the sensing signal being carried in the N OFDM symbols, the sensing signal being modulated according to a first modulation manner, the first modulation manner corresponding to a constellation diagram in which different constellation points have equal amplitudes, or the first modulation manner corresponding to a constellation diagram in which different constellation points have amplitudes with a difference less than or equal to a first threshold value; transmitting a demodulation reference signal, the demodulation reference signal being carried in the K OFDM symbols.

22. The method of claim 21, wherein, The first information comprises position distribution information of the demodulation reference signal, the position distribution information comprising information used to describe the positions of the K OFDM symbols.

23. A communications device, characterized by comprising means for performing the method of any one of claims 1 to 22.

24. A communications device, characterized by comprising a processor configured to execute computer program or instructions, such that the apparatus performs the method of any one of claims 1 to 22.

25. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer program or instructions, when the computer program or instructions are executed, the method of any one of claims 1 to 22 is implemented.

26. A computer program product, characterised in that, The computer program product comprises computer program code, when the computer program code is run, the method of any one of claims 1 to 22 is implemented.

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