Communication method and communication apparatus

Abstract

A communication method and a communication apparatus, which relate to the technical field of communications. The method comprises: a network device sending first signals on a carrier component, wherein the carrier component comprises a plurality of bandwidth parts; and the network device sending to a terminal device first indication information, which is used for instructing the terminal device to receive some of the first signals on a first bandwidth part, wherein the plurality of bandwidth parts comprise the first bandwidth part. The method improves the sensing performance of first signals without affecting the communication.

Description

Communication methods and communication devices

[0001] This application claims priority to Chinese Patent Application No. 202510068877.2, filed with the State Intellectual Property Office of China on January 15, 2025, entitled "Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, specifically to a communication method and a communication device. Background Technology

[0003] With the development of technology, communication systems are expected to incorporate sensing technology, which integrates communication and sensing. For communication systems, the channel state information of multiple downlink users can be obtained using the channel state information reference signal (CSI-RS), and this CSI-RS can also be used to support sensing technology for perception.

[0004] However, when using CSI-RS for sensing in related technologies, CSI-RS is configured based on the bandwidth allocated by the network device to the terminal device, which to some extent limits the sensing performance of CSI-RS. Summary of the Invention

[0005] This application provides a communication method that can improve the sensing performance of a first signal, such as a CSI-RS signal.

[0006] In a first aspect, a communication method is provided, the method comprising: transmitting a first signal on a carrier component, the carrier component comprising a plurality of bandwidth portions; and transmitting first indication information to a terminal device, the first indication information being used to instruct the terminal device to receive a portion of the first signal in a first bandwidth portion, wherein the plurality of bandwidth portions includes the first bandwidth portion.

[0007] For example, the communication method can be implemented by a network device, or by modules, units, processors, circuits, chips or chip systems included in the network device.

[0008] The method provided in this application involves a network device transmitting a first signal over the entire carrier component. This first signal is configured based on the entire carrier component, allowing the first signal to utilize all frequency resources. The larger the bandwidth occupied by the first signal, the better the sensing performance using the first signal. Furthermore, the network device instructs the terminal device to receive a portion of the first signal within the first bandwidth, thereby improving sensing performance without affecting the terminal device's acquisition of communication channel information.

[0009] In some embodiments, the random number seed corresponding to the sequence of the first signal satisfies the following formula:

[0010] Among them, c init This represents the initial value of the random number seed. This indicates the number of symbols in a time slot. The value represents the slot index within the subframe, μ represents the subcarrier spacing, and l represents the current symbol index within the slot. The identifier of the cell to which the terminal device is connected.

[0011] In this embodiment of the application, the random number seed corresponding to the sequence of the first signal is related to the identifier of the cell accessed by the terminal device, ensuring that each terminal device accessing the same cell is generated by the same sequence.

[0012] In some embodiments, the sequence of the first signal is mapped onto each resource block of the carrier component.

[0013] In this embodiment of the application, mapping the sequence of the first signal onto each resource block of the carrier component enables the network device to transmit the first signal over the entire carrier component.

[0014] In some embodiments, the sequence mapping of the first signal satisfies the following formula:

[0015] n=0…the largest physical resource block

[0016] Where, β CSIRS Indicates the power scaling factor, w f (K') denotes the sign function of the frequency domain subcarrier, w t (l') represents the symbol function of the time-domain OFDM symbol. This represents the sequence in the first signal.

[0017] In this embodiment of the application, n represents a physical resource block. Since the first signal is transmitted over the entire carrier component, the value of n ranges from 0 to the largest physical resource block when mapping the sequence of the first signal.

[0018] In some embodiments, the carrier component includes any one of the following: 60MHz, 80MHz, or 100MHz.

[0019] In some embodiments, the maximum physical resource block can be any of the following: 160, 216, 272, 64, or 52.

[0020] In this embodiment, frequency band 1 corresponding to the carrier component includes a 60MHz bandwidth, an 80MHz bandwidth, and a 100MHz bandwidth. The 60MHz bandwidth has a starting resource block number of 0 and a total of 160 resource blocks; the 80MHz bandwidth has a starting resource block number of 0 and a total of 216 resource blocks; and the 100MHz bandwidth has a starting resource block number of 0 and a total of 274 resource blocks. Frequency band 2 corresponding to the carrier component includes a 100MHz bandwidth, with a starting resource block number of 0 and a total of 64 resource blocks, and the tracking reference signal (TRS) signal has a starting resource block number of 0 and a total of 52 resource blocks.

[0021] Furthermore, when the carrier component corresponds to 60MHz in frequency band 1, the value of n is 0-160; when the bandwidth is 80MHz in frequency band 1, the value of n is 0-216; when the bandwidth is 100MHz in frequency band 1, the value of n is 0-272; when the bandwidth is 100MHz in frequency band 2, the value of n is 0-64; and when the first signal is a TRS signal, the value of n is 0-52.

[0022] In some embodiments, the method further includes: determining an initial position and an end position for the terminal device to receive a portion of the first signal in the first bandwidth portion based on a first bandwidth portion, a subcarrier spacing, and a first position allocated by the network device to the terminal device; wherein the first position is used to indicate a specific reference position for the terminal device to receive a portion of the first signal, and the first indication information includes the initial position and the end position for receiving a portion of the first signal in the first bandwidth portion.

[0023] In this embodiment of the application, the network device determines the initial position and the end position for the terminal device to receive a portion of the signal in the first signal, so that the terminal device can directly use the initial position and the end position indicated in the first indication information to receive a portion of the signal in the first signal, thereby reducing the power consumption of the terminal device.

[0024] In some embodiments, the first indication information includes a first bandwidth portion allocated by the network device to the terminal device, the subcarrier spacing, and a first location, wherein the first location is used to indicate a specific reference location where the terminal device receives the first signal.

[0025] In this embodiment of the application, the network device sends a first bandwidth portion, subcarrier spacing, and first position allocated to the terminal device through a first indication information, so that the terminal device can calculate the initial position and end position of receiving a portion of the first signal based on the first indication information.

[0026] In some embodiments, the first signal is a Channel State Information Reference Signal (CSI-RS) signal.

[0027] In some embodiments, the CSI-RS signal is a TRS signal.

[0028] In a second aspect, a communication method is provided, the method comprising: receiving first indication information from a network device, the first indication information being used to instruct a terminal device to acquire a portion of a first signal in a first bandwidth portion, the network device transmitting the first signal on a carrier component, the carrier component including a plurality of bandwidth portions, the plurality of bandwidth portions including the first bandwidth portion; and receiving a portion of the first signal in the first bandwidth portion according to the first indication information.

[0029] For example, the communication method can be implemented by a terminal device, or by modules, units, processors, circuits, chips or chip systems included in the terminal device.

[0030] The method provided in this application allows a terminal device to acquire a portion of a first signal in a first bandwidth portion based on a first instruction information from a network device. This first signal is transmitted by the network device over the entire carrier component. Therefore, while improving sensing performance, it does not affect the terminal device's acquisition of communication channel information.

[0031] In some embodiments, the random number seed corresponding to the sequence of the first signal satisfies the following formula:

[0032] Among them, c init This represents the initial value of the random number seed. This indicates the number of symbols in a time slot. The value represents the slot index within the subframe, μ represents the subcarrier spacing, and l represents the current symbol index within the slot. The identifier of the cell to which the terminal device is connected.

[0033] In this embodiment of the application, the random number seed corresponding to the sequence of the first signal is related to the identifier of the cell accessed by the terminal device, ensuring that each terminal device accessing the same cell is generated by the same sequence.

[0034] In some embodiments, the sequence of the first signal is mapped onto each resource block of the carrier component.

[0035] In this embodiment of the application, mapping the sequence of the first signal onto each resource block of the carrier component enables the network device to transmit the first signal over the entire carrier component.

[0036] In some embodiments, the sequence mapping of the first signal satisfies the following formula:

[0037] n=0…the largest physical resource block

[0038] Where, β CSIRS Indicates the power scaling factor, w f (K') denotes the sign function of the frequency domain subcarrier, w t (l') represents the symbol function of the time-domain OFDM symbol. This represents the sequence in the first signal.

[0039] In this embodiment of the application, n represents a physical resource block. Since the first signal is transmitted over the entire carrier component, the value of n ranges from 0 to the largest physical resource block when mapping the sequence of the first signal.

[0040] In some embodiments, the carrier component includes any one of the following: 60MHz, 80MHz, or 100MHz.

[0041] In some embodiments, the maximum physical resource block can be any of the following: 160, 216, 272, 64, or 52.

[0042] In this embodiment, frequency band 1 corresponding to the carrier component includes a 60MHz bandwidth, an 80MHz bandwidth, and a 100MHz bandwidth. The 60MHz bandwidth has a starting resource block number of 0 and a total of 160 resource blocks; the 80MHz bandwidth has a starting resource block number of 0 and a total of 216 resource blocks; and the 100MHz bandwidth has a starting resource block number of 0 and a total of 274 resource blocks. Frequency band 2 corresponding to the carrier component includes a 100MHz bandwidth, with a starting resource block number of 0 and a total of 64 resource blocks, and the tracking reference signal (TRS) signal has a starting resource block number of 0 and a total of 52 resource blocks.

[0043] Furthermore, when the carrier component corresponds to 60MHz in frequency band 1, the value of n is 0-160; when the bandwidth is 80MHz in frequency band 1, the value of n is 0-216; when the bandwidth is 100MHz in frequency band 1, the value of n is 0-272; when the bandwidth is 100MHz in frequency band 2, the value of n is 0-64; and when the first signal is a TRS signal, the value of n is 0-52.

[0044] In some embodiments, the first indication information includes a first bandwidth portion allocated by the network device to the terminal device, the subcarrier spacing, and a first location, wherein the first location is used to indicate a specific reference location where the terminal device receives the first signal.

[0045] In this embodiment of the application, the network device sends a first bandwidth portion, subcarrier spacing, and first position allocated to the terminal device through a first indication information, so that the terminal device can calculate the initial position and end position of receiving a portion of the first signal based on the first indication information.

[0046] In some embodiments, the method further includes: determining an initial position and an end position for receiving the first signal based on a first bandwidth, a subcarrier spacing, and a first position allocated by the network device to the terminal device, wherein receiving the first signal in the first bandwidth portion includes: receiving the first signal at the initial position and the end position of the first bandwidth portion.

[0047] Thirdly, a communication device is provided, comprising: a module (e.g., including a processing module and a communication module) for performing the steps of the first aspect or any possible implementation thereof, or a module for performing the steps of the second aspect or any possible implementation thereof.

[0048] Fourthly, a communication device is provided, the device comprising at least one processor, the at least one processor being configured to execute: the method of the first aspect or any possible implementation thereof, or to execute the method of the second aspect or any possible implementation thereof.

[0049] In one possible implementation, the communication device may further include a memory storing a computer program, and at least one processor executes the method of the first aspect or any possible implementation thereof by executing the computer program stored in the memory, or executes the method of the second aspect or any possible implementation thereof.

[0050] In one possible implementation, at least one processor executes the method of the first aspect or any possible implementation of the first aspect through logic circuits or processing circuits, or executes the method of the second aspect or any possible implementation of the second aspect.

[0051] In one possible implementation, the communication device may further include an interface circuit for performing specific signal transmission and reception. For example, the communication device may be a network device or a terminal device, or a component (chip, chip system, or processor) within a network device or terminal device, or a logic module or software capable of implementing all or part of the terminal functions.

[0052] Fifthly, a computer program product is provided, comprising a computer program that, when executed by a processor, performs the method of the first aspect or any possible implementation thereof, or performs the method of the second aspect or any possible implementation thereof.

[0053] In a sixth aspect, a computer-readable storage medium is provided, which stores a computer program that, when executed, performs the method of the first aspect or any possible implementation thereof, or performs the method of the second aspect or any possible implementation thereof.

[0054] In a seventh aspect, a chip is provided, comprising: a processor for calling and running a computer program from a memory, causing a communication device on which the chip is installed to execute a method for performing the first aspect or any possible implementation of the first aspect, or to perform a method for performing the second aspect or any possible implementation of the second aspect. Attached Figure Description

[0055] Figure 1 illustrates the existing CSI-RS configuration process for 5G NR in related technologies.

[0056] Figure 2 shows a schematic diagram of a CSI-RS resource configuration.

[0057] Figure 3 shows a schematic diagram of a communication system provided in an embodiment of this application.

[0058] Figure 4 shows a schematic diagram of another communication system provided in an embodiment of this application.

[0059] Figure 5 shows a schematic diagram of another example of a communication system provided in an embodiment of this application.

[0060] Figure 6 shows a schematic flowchart of a communication method 600 provided in an embodiment of this application.

[0061] Figure 7 shows a schematic diagram of an example that includes multiple bandwidth segments across the entire bandwidth.

[0062] Figure 8 shows a schematic block diagram of a communication device 800 provided in an embodiment of this application.

[0063] Figure 9 shows a schematic block diagram of another communication device 900 provided in an embodiment of this application.

[0064] Figure 10 shows a schematic diagram of the structure of a network device 1000 provided in an embodiment of this application.

[0065] Figure 11 shows a schematic diagram of a chip system provided in an embodiment of this application. Detailed Implementation

[0066] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0067] The technical solutions of this application embodiment can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5th Generation (5G) system, or future evolved communication systems (such as 6G), etc.

[0068] In this application, the terminal device can refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. The terminal device can also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in a 5G network, or terminal device in a future evolved network, etc. This application does not limit the scope of the terminal device.

[0069] The network device in this application embodiment can be a device for communicating with terminal devices. The network device can be a base station (BTS) in a global system for mobile communications (GSM) or code division multiple access (CDMA) system, a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, an evolved base station (eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (CRAN) scenario. Alternatively, the network device can be a relay station, access point, vehicle-mounted device, wearable device, or a network device in a 5G network or a network device in a future evolved network, etc. The embodiments of this application are not limited to these.

[0070] In the embodiments of this application, the terminal device or network device may include a hardware layer, and optionally, a software layer running on the hardware layer. The hardware layer may include a processor, and may also include hardware such as a memory management unit (MMU) or memory (also called main memory). The software layer stores computer instructions that facilitate the implementation of the methods in the various embodiments of this application. The embodiments of this application do not particularly limit the specific structure or hierarchy of the executing entity of the methods provided in the embodiments of this application. Any device that can communicate according to the methods provided in the embodiments of this application by running a program that records the code of the methods provided in the embodiments of this application can be considered a terminal device or network device implementing the embodiments of this application. For example, the executing entity of the methods provided in the embodiments of this application may be a communication module (e.g., a modem), a system-on-a-chip (SoC), or other functional modules in the terminal device or network device.

[0071] Furthermore, various aspects or features of this application can be implemented as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). Additionally, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0072] In the description of the embodiments of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can represent A or B. "And / or" in the embodiments of this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. Furthermore, in the description of the embodiments of this application, unless otherwise stated, "multiple" refers to two or more. "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, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple. Additionally, to facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or the order of execution, and that the words "first" and "second" do not necessarily imply that they are different.

[0073] In the various method embodiments of this application, the order of the sequence numbers does not imply the order of execution. The execution order should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0074] It is understood that in the embodiments of this application, descriptions such as "under the circumstances," "if," "when," and "if..." can be used interchangeably. Furthermore, these descriptions all refer to the corresponding processing that will be carried out under certain objective circumstances, and are not limited to a specific time, nor do they require any judgment action during implementation, nor do they imply any other limitations.

[0075] 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 apparatus given in the embodiments of this application can also implement these features or functions, which will not be elaborated here.

[0076] In the embodiments of this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, and in the various implementation methods / methods / implementations within each embodiment, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the various implementation methods / methods / implementations within each embodiment are consistent and can be mutually referenced. The technical features in different embodiments and the various implementation methods / methods / implementations within each embodiment can be combined according to their inherent logical relationships to form new embodiments, implementation methods, methods, or implementation approaches. The embodiments of this application described below do not constitute a limitation on the scope of protection of this application.

[0077] CSI-RS is a reference signal used for measuring channel state information in 5G New Radio (NR) and LTE. It is transmitted by the base station and received by the user equipment. Through CSI-RS, the user equipment can estimate downlink channel characteristics and feed this information back to the base station, enabling the base station to make effective adjustments to transmission parameters such as channel state information, beam management, and time-frequency tracking.

[0078] Specifically, CSI-RS is mainly used for the following aspects: 1. Acquiring channel state information: used to measure the channel between the base station and the terminal equipment, and to obtain channel state information required for scheduling and link adaptation, such as precoding matrices and channel quality information. 2. Beam management: used to obtain beamforming weights for the terminal equipment and base station sides, supporting beam measurement during beam management. 3. Time-frequency tracking: used for accurate time-frequency synchronization tracking, obtaining quasi-colocation (QCL) parameters. 4. Mobility management: used to complete mobility management-related measurements.

[0079] Depending on the power configuration, CSI-RS can be divided into two types: non-zero-power CSI-RS (NZP CSI-RS) and zero-power CSI-RS (ZP CSI-RS).

[0080] The NZP CSI-RS can be used as a reference signal for downlink channel state measurement, as well as for beam measurement and reporting during beam management, and as a reference signal for mobility measurement. The ZP CSI-RS is mainly used for PDSCH rate matching.

[0081] Integrated sensing and communication (ISAC) is widely considered a key application scenario for next-generation wireless communication, 6G. Specifically, the transmitted wireless signal possesses both sensing and communication capabilities. The communication requirement can be understood as sending information from the transmitter to the receiver. The sensing requirement can be understood as sensing the surrounding environment, the speed of moving objects, distance, etc., with traditional radar being the most common example of this sensing capability.

[0082] For NR communication systems, CSI-RS is used to acquire channel state information from multiple downlink users, enabling operations such as beamforming and precoding to achieve better downlink communication transmission performance. It's worth noting that CSI-RS can also be used for sensing. In a sense, CSI-RS can exist as a natural sensing signal; it often occupies a large bandwidth, which is beneficial for distance sensing. Therefore, utilizing CSI-RS for sensing functions is a natural idea.

[0083] Therefore, how to use CSI-RS for sensing, or how to use CSI-RS to achieve better sensing performance, are issues that need to be addressed.

[0084] Figure 1 illustrates the existing CSI-RS configuration process for 5G NR in related technologies. As shown in Figure 1, the first step involves selecting and configuring the location of multiple antenna ports within a single Resource Block (RB): The location of the CSI-RS resource element within a single RB is configured using CSI-RS-ResourceMapping. Next, the RB's location is configured: the RB's position in the frequency domain, including the starting RB and the number of RBs, is configured using CSI-RS-ResourceMapping.freqBand. Then, the time-domain symbol's location is configured: the periodicity and offset of the CSI-RS in the time domain are configured using ZP-CSI-RS-Resource and / or NZP-CSI-RS-Resource. Finally, the above configuration is applied: the entire configuration is applied using PDSCH-Config and / or CSI-MeasConfig.

[0085] In the existing NR scheme, CSI-RS is configured based on the bandwidth of the terminal device. For example, the bandwidth allocated to terminal device 1 is 20MHz (in NR FR1, the maximum supported bandwidth of a single carrier component is 100MHz). Therefore, the CSI-RS signal sent by the base station is a parameter configuration signal based on the 20MHz bandwidth (the CSI-RS sequence length, BWP duration, and RB start / end position are all configured as described above).

[0086] It is evident that CSI-RS in related technologies is designed for individual terminal devices, specifically tailored to the bandwidth and frequency requirements of those devices. Due to the limited bandwidth occupied, this design approach prevents CSI-RS from achieving superior sensing performance.

[0087] In view of this, this application provides a communication method, which includes: a network device sending CSI-RS to a terminal device over a carrier component, the carrier component including multiple BWPs, and sending a first indication message to the terminal device, the first indication message being used to instruct the terminal device to perform channel estimation on a first BWP, the first BWP being any one of the multiple BWPs. This method improves the sensing performance of CSI-RS without affecting communication.

[0088] For example, Figure 2 shows a schematic diagram of CSI-RS resource configuration. As shown in Figure 2(a), the carrier component includes multiple bandwidth portions. In related technologies, network devices allocate CSI-RS resources on specific bandwidths, and terminal devices perform channel estimation based on the received CSI-RS. For example, the network device allocates CSI-RS resources for terminal devices A, B, and C on specific bandwidths, and terminal devices A, B, and C respectively receive CSI-RS resources on the specific bandwidths. As shown in Figure 2(b), in this embodiment, the network device allocates CSI-RS resources across the entire carrier component. Then, the network device instructs the terminal devices to acquire CSI-RS on the bandwidth corresponding to the terminal devices for channel estimation. For example, the network device instructs terminal devices A, B, and C to receive CSI-RS resources on specific bandwidths.

[0089] To facilitate understanding of the embodiments of this application, the communication system applicable to the embodiments of this application will first be described with reference to FIG3.

[0090] Figure 3 shows a schematic diagram of a communication system provided in an embodiment of this application. As shown in Figure 3, the communication system includes three communication devices, such as a network device 310, a terminal device 320, and a terminal device 330. The network device 310 can perform data communication with at least one of the terminal devices 320 and 330. For example, the network device 310 can transmit downlink signals to the terminal device 320 or the terminal device 330 using the communication method provided in this application. Of course, the terminal device 320 or the terminal device 330 can also transmit uplink signals to the network device 310 using the communication method provided in this application.

[0091] It should be understood that the communication system shown in Figure 3 may also include more network nodes, such as terminal devices or network devices. The network devices or terminal devices included in the communication system shown in Figure 3 can be the various forms of network devices or terminal devices described above. Embodiments of this application are not shown one by one in the figures.

[0092] Figure 4 shows a schematic diagram of another communication system provided in an embodiment of this application. As shown in Figure 4, the communication system includes two satellites, such as satellite 410 and satellite 420. Satellite 410 and satellite 420 are respectively composed of an acquisition, pointing, and tracking (APT) module and a communication module. The communication module is responsible for the transmission of information between satellites and is the main body of the inter-satellite communication system; the APT module is responsible for the acquisition, pointing, and tracking between satellites. Specifically, determining the direction of arrival of the incident signal is acquisition, adjusting the transmitted wave to aim at the receiving direction is pointing, and continuously adjusting the pointing and acquisition during the entire communication process constitutes tracking. Satellite 410 can transmit information to satellite 420 using the communication method provided in this application.

[0093] Figure 5 shows a schematic diagram of another example of a communication system provided in this application. As shown in Figure 5(a), the cellular communication system or wireless local area network communication system includes a network device 510, a terminal device 520, and a terminal device 530, meaning that one network device can transmit signals to multiple terminals using the communication method provided in this application. As shown in Figure 5(b), the cellular communication system or wireless local area network communication system includes a terminal device 540, a network device 550, and a network device 560, meaning that one terminal device can transmit signals to multiple network devices using the communication method provided in this application.

[0094] The communication method provided in this application will be described in detail below with reference to Figure 6. Figure 6 shows a schematic flowchart of a communication method 600 provided in an embodiment of this application. This method 600 can be applied in the scenarios shown in Figures 3, 4 or 5, and of course it can also be applied in other communication scenarios. This application embodiment does not limit it here.

[0095] It should also be understood that, in the embodiments of this application, the terminal device and network device are used as examples to illustrate the method. As an example and not a limitation, the executing entity of the method can also be a chip, chip system, or processor applied to the terminal device and network device. The following describes the communication method provided in the embodiments of this application using a network device as the sending end and a terminal device as the receiving end as an example.

[0096] As shown in Figure 6, the method 600 illustrated in Figure 6 may include steps S610 to S630. The steps of method 600 will be described in detail below with reference to Figure 6.

[0097] S610, The network device transmits a first signal on a carrier component, which includes multiple bandwidth portions.

[0098] It should be understood that a component carrier (CC) is an independent block of spectrum resources for transmitting data. A carrier component is the basic unit of frequency resources, and each carrier component has a fixed bandwidth and can support different channels and signals. 5G NR supports wider CC bandwidths, and the CC bandwidth varies depending on the frequency band.

[0099] The bandwidth part (BWP) refers to a smaller bandwidth segment defined within a carrier component. The BWP allows terminal devices to activate different bandwidth parts as needed, thereby optimizing performance and power consumption. For example, when a high data rate is not required, the terminal device can switch to a narrower BWP to save power, while when a higher data rate is required, it can switch to a wider BWP.

[0100] In some embodiments, when a network device transmits a first signal, sensing performance can be improved by occupying more bandwidth, i.e., the network device can transmit the first signal over the entire carrier component.

[0101] It should be understood that the transmission of the first signal is related to the generation and mapping of the sequence.

[0102] Specifically, sequence generation aims to create a first signal. The generated sequences possess good autocorrelation and cross-correlation, enabling the terminal device to accurately estimate the channel. Sequence mapping places these sequences onto appropriate time-frequency resources. Once a sequence is generated, it needs to be mapped onto an object resource block. This can be understood as determining which time-frequency resource element should be used to carry the first signal for transmission.

[0103] In NR, the random number seed corresponding to the first signal sequence is:

[0104] in, c represents the number of symbols in a time slot. init Indicates the initial value. The subframe represents the slot index, μ represents the subcarrier spacing, l represents the current symbol index within the slot, and n represents the current symbol index within the slot. ID This indicates the identifier of the terminal device.

[0105] The initial value of the pseudo-sequence is determined using formula (1), and the pseudo-sequence is generated based on the initial value of the pseudo-sequence in formula (1), as shown in the following formula: c(n)=(x1(n+N) c )+x2(n+N c ))mod2 (2)

[0106] It should be understood that the pseudo-sequence can take the value of 0 or 1.

[0107] The pseudo-sequence based on formula (2) generates the reference sequence as shown in formula (3).

[0108] It should be understood that the reference sequence is in complex form.

[0109] Furthermore, based on the reference sequence in formula (3), the reference sequence is mapped to the specific resource corresponding to each terminal device. n = 0, 1, 2...

[0110] Where, β CSIRS Indicates the power scaling factor, w f (K') denotes the sign function of the frequency domain subcarrier, w t (l') represents the symbol function of the time-domain OFDM symbol. This represents a sequence in CSI-RS.

[0111] It should be understood that the sequence corresponding to each terminal device in formulas (1)-(3) is generated independently, and a mapping is performed on a specific bandwidth for each independent sequence.

[0112] In this embodiment of the application, since the network device needs to send the first signal across the entire bandwidth, the network device needs to map the resources within the entire bandwidth.

[0113] Therefore, the random number seed corresponding to the first signal sequence should satisfy the following formula:

[0114] in, The sign indicating the residential area.

[0115] Therefore, in this embodiment of the application, a pseudo-sequence is generated based on the initial value of the pseudo-sequence in formula (5), and a reference sequence is generated based on the pseudo-sequence. Furthermore, the reference sequence is mapped over the entire bandwidth.

[0116] In this embodiment of the application, the random number seed corresponding to the sequence of the first signal is related to the identifier of the cell accessed by the terminal device, ensuring that each terminal device accessing the same cell is generated by the same sequence.

[0117] It should be noted that the pseudo-sequence can be generated based on the initial value of the pseudo-sequence using the above formula (2), the reference sequence can be generated based on the pseudo-sequence using the above formula (3), and the mapping based on the reference sequence can be performed using the above formula (4). These will not be elaborated here.

[0118] It is worth noting that when the reference sequence is mapped over the entire bandwidth based on the above formula (4), the value of n is n = 0…max(PRB).

[0119] In this embodiment of the application, n represents a physical resource block. Since the first signal is transmitted over the entire carrier component, the value of n ranges from 0 to the largest physical resource block when mapping the sequence of the first signal.

[0120] Table 1<Based on 38.508-1Table 4.6.3-33:CSI-FrequencyOccupation>

[0121] Table 1 shows the CSI-FrequencyOccupation parameter configurations for different frequency bands. These parameters describe the frequency occupancy of Channel State Information (CSI) in different frequency bands.

[0122] For example, band 1 includes 60MHz, 80MHz, and 100MHz bandwidths. The 60MHz bandwidth starts with resource block number 0 and has 160 resource blocks; the 80MHz bandwidth starts with resource block number 0 and has 216 resource blocks; and the 100MHz bandwidth starts with resource block number 0 and has 274 resource blocks. Band 2 includes a 100MHz bandwidth, with 64 resource blocks starting with resource block number 0, and 52 resource blocks starting with resource block number 0 for the TRS signal.

[0123] Therefore, when the reference sequence is mapped over the entire bandwidth based on the above formula (4), when the bandwidth is 60MHz in band 1, the value of n is 0-160; when the bandwidth is 80MHz in band 1, the value of n is 0-216; when the bandwidth is 100MHz in band 1, the value of n is 0-272; when the bandwidth is 100MHz in band 2, the value of n is 0-64; and when the first signal is a TRS signal, the value of n is 0-52.

[0124] For example, the first signal may be a CSI-RS signal.

[0125] In some embodiments, when the sequence generated above is mapped over the entire bandwidth, the first signal is carried over the time-frequency resources corresponding to the entire bandwidth.

[0126] Specifically, when the bandwidth is 60MHz in band 1, the first signal is transmitted on 160 resource blocks; when the bandwidth is 80MHz in band 1, the first signal is transmitted on 216 resource blocks; when the bandwidth is 100MHz in band 1, the first signal is transmitted on 272 resource blocks; when the bandwidth is 100MHz in band 2, the first signal is transmitted on 64 resource blocks; and when the first signal is a TRS signal, the first signal is transmitted on 52 resource blocks.

[0127] S620. The network device sends a first indication information to the terminal device, the first indication information being used to instruct the terminal device to receive a portion of the first signal in the first bandwidth, wherein the multiple bandwidth portions include the first bandwidth portion.

[0128] Correspondingly, the terminal device receives the first instruction information sent by the network device.

[0129] In some embodiments, the first indication information sent by the network device to the terminal device includes the bandwidth allocated by the network device to the terminal device, the subcarrier spacing, and a first position, which is used to indicate a specific reference position for the terminal device to receive the first signal.

[0130] In this implementation, the network device instructs the terminal device to use the parameters to calculate the initial and ending positions in the common resource block (CRB).

[0131] In other embodiments, the first indication information sent by the network device to the terminal device includes the initial position and the ending position of the terminal device in the CRB.

[0132] It should be understood that in this implementation, the network device calculates the initial and final positions of the terminal device in the CRB based on the bandwidth allocated to the terminal device, the subcarrier spacing, and the first position, thereby reducing the power consumption of the terminal device.

[0133] Specifically, assuming the network device allocates a bandwidth of 20MHz to the terminal device and the subcarrier spacing is 30kHz, since 1RB = 12RE, 30kHz × 12 = 0.36MHz in 1RB, and 20MHz / 0.36MHz = 55RB. The network device can indicate the initial position in the CRB, i.e., the position of point A, and the ending position 55RB from that initial position to the terminal device.

[0134] For example, Figure 7 shows a schematic diagram of a scenario where the entire bandwidth comprises multiple bandwidth segments. As shown in Figure 7, the carrier bandwidth is divided into three parts, each with a corresponding length, represented by [missing information - likely a typology or symbol]. This indicates that within each BWP, there are multiple Physical Resource Blocks (PRBs). PRBs are the basic units within each BWP. For example, in Carrier bandwidth part 0, there are PRBs labeled PRB0, PRB1, and PRB N1. Indicates the starting position of each BWP within the carrier range, for example... This is the starting index of Carrier bandwidth part 0. Point A is a common reference point for the resource block grid, obtained through higher-level parameters. It is used to determine the starting position of the resource block grid within the carrier bandwidth. CRB0 is the first common reference block within the carrier bandwidth. CRB0 is a reference point used to determine the positions of other RBs within the carrier bandwidth.

[0135] S630, The terminal device receives a portion of the first signal in the first bandwidth portion according to the first instruction information.

[0136] In some embodiments, the terminal device receives bandwidth allocated to the terminal device, subcarrier spacing, and a first position from the network device. Further, the terminal device uses these parameters to calculate its initial and final positions within the CRB.

[0137] Specifically, assuming the terminal device receives a bandwidth of 20MHz and a subcarrier spacing of 30kHz from the network device, since 1RB = 12RE, 30kHz × 12 = 0.36MHz in 1RB, and 20MHz / 0.36MHz = 55RB. The terminal device receives a portion of the first signal on the resource block corresponding to the initial and final positions, based on the location of point A indicated by the network device (i.e., the initial position in the CRB) and the ending position 55RB from that initial position.

[0138] In other embodiments, the terminal device receives an initial position and an end position sent by the network device, and the terminal device receives a portion of the first signal on the resource block corresponding to the initial position and the end position.

[0139] The method provided in this application embodiment involves a network device transmitting a first signal over the entire carrier component. This first signal is configured based on the entire carrier component, allowing the first signal to utilize all frequency resources. The larger the bandwidth occupied by the first signal, the better the sensing performance using the first signal. The network device instructs the terminal device to receive a portion of the first signal in the first bandwidth section, thereby improving the sensing performance without affecting the terminal device's acquisition of communication channel information.

[0140] The foregoing has detailed examples of the communication methods provided in this application. It is understood that terminal devices and network devices, in order to achieve the above functions, include corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0141] The communication device provided in this application will be described below.

[0142] For example, FIG8 shows a schematic block diagram of a communication device 800 provided in an embodiment of the present application. The communication device 800 may correspond to the network device or terminal device described in the various embodiments of the method 600 above, or may be applied in a chip or component of a network device or terminal device. Furthermore, each module or unit in the communication device 800 is used to execute the various actions or processing procedures performed by the network device or terminal device described in the various embodiments of the method 600 above.

[0143] As shown in Figure 8, the communication device 800 includes a processing unit 810 and a transceiver unit 820. The transceiver unit 820 is used to perform specific signal transmission and reception under the drive of the processing unit 810.

[0144] In some embodiments:

[0145] The transceiver unit 820 is used to transmit a first signal on a carrier component, the carrier component including multiple bandwidth portions;

[0146] The transceiver unit 820 is further configured to send first indication information to the terminal device, the first indication information being configured to instruct the terminal device to receive a portion of the first signal in a first bandwidth portion, wherein the plurality of bandwidth portions include the first bandwidth portion.

[0147] The communication device provided in this application transmits a first signal over the entire carrier component, that is, the first signal is configured based on the entire carrier component, so that the first signal can utilize all frequency resources. The larger the bandwidth occupied by the first signal, the better the sensing performance using the first signal. It instructs the terminal device to receive a portion of the first signal in the first bandwidth section, thereby improving the sensing performance without affecting the terminal device's acquisition of communication channel information.

[0148] Optionally, the random number seed corresponding to the sequence of the first signal satisfies the following formula:

[0149] Among them, c init This represents the initial value of the random number seed. This indicates the number of symbols in a time slot. The value represents the slot index within the subframe, μ represents the subcarrier spacing, and l represents the current symbol index within the slot. The identifier of the cell to which the terminal device is connected.

[0150] Optionally, the sequence of the first signal is mapped onto each resource block of the carrier component.

[0151] Optionally, the sequence mapping of the first signal satisfies the following formula:

[0152] n=0…the largest physical resource block

[0153] Where, β CSIRS Indicates the power scaling factor, w f (K') denotes the sign function of the frequency domain subcarrier, w t (l') represents the symbol function of the time-domain OFDM symbol. This represents the sequence in the first signal.

[0154] Optionally, the carrier component includes any one of the following: 60MHz, 80MHz, or 100MHz.

[0155] Optionally, the maximum physical resource block can be any of the following: 160, 216, 272, 64, or 52.

[0156] Optionally, the processing unit 810 is configured to determine the initial position and the end position of the terminal device receiving a portion of the first signal in the first bandwidth portion based on the first bandwidth portion, the subcarrier spacing, and the first position allocated by the network device to the terminal device; wherein, the first position is used to indicate a specific reference position for the terminal device to receive a portion of the first signal, and the first indication information includes the initial position and the end position of the portion of the first signal received in the first bandwidth portion.

[0157] Optionally, the first indication information includes a first bandwidth portion allocated by the network device to the terminal device, the subcarrier spacing, and a first position, wherein the first position is used to indicate a specific reference position for the terminal device to receive the first signal.

[0158] Optionally, the first signal is a Channel State Information Reference Signal (CSI-RS).

[0159] Optionally, the CSI-RS signal is a tracking reference signal (TRS signal).

[0160] In other embodiments:

[0161] The transceiver unit 820 is configured to receive first indication information from a network device, the first indication information being configured to instruct the terminal device to acquire a portion of the first signal in a first bandwidth portion, the network device transmitting the first signal on a carrier component, the carrier component including multiple bandwidth portions, the multiple bandwidth portions including the first bandwidth portion; the transceiver unit 820 is further configured to receive a portion of the first signal in the first bandwidth portion according to the first indication information.

[0162] The apparatus provided in this application acquires a portion of a first signal in a first bandwidth portion based on a first instruction information from a network device. This first signal is transmitted by the network device over the entire carrier component. Therefore, while improving sensing performance, it does not affect the terminal device's acquisition of communication channel information.

[0163] Optionally, the random number seed corresponding to the sequence of the first signal satisfies the following formula:

[0164] Among them, c init This represents the initial value of the random number seed. This indicates the number of symbols in a time slot. The value represents the slot index within the subframe, μ represents the subcarrier spacing, and l represents the current symbol index within the slot. The identifier of the cell to which the terminal device is connected.

[0165] Optionally, the sequence of the first signal is mapped onto each resource block of the carrier component.

[0166] Optionally, the sequence mapping of the first signal satisfies the following formula:

[0167] n=0…the largest physical resource block

[0168] Where, β CSIRS Indicates the power scaling factor, w f (K') denotes the sign function of the frequency domain subcarrier, w t (l') represents the symbol function of the time-domain OFDM symbol. This represents the sequence in the first signal.

[0169] Optionally, the carrier component includes any one of the following: 60MHz, 80MHz, or 100MHz.

[0170] Optionally, the maximum physical resource block can be any of the following: 160, 216, 272, 64, or 52.

[0171] Optionally, the first indication information includes a first bandwidth portion allocated by the network device to the terminal device, the subcarrier spacing, and a first position, wherein the first position is used to indicate a specific reference position for the terminal device to receive the first signal.

[0172] Optionally, the processing unit 810 is configured to determine the initial position and the end position for receiving the first signal based on the first bandwidth, subcarrier spacing and the first position allocated by the network device to the terminal device, wherein receiving the first signal in the first bandwidth portion includes: receiving the first signal at the initial position and the end position of the first bandwidth portion.

[0173] It should be understood that the specific processes by which each unit in the communication device 800 performs the corresponding steps described above are described in the preceding text in conjunction with method 600 and the relevant embodiments in Figure 6 regarding the network device or terminal device. For example, the transceiver unit 820 can perform the receiving and sending steps involved in the above method embodiments, while the processing unit 810 can perform steps other than receiving and sending. Various specific processes are as described in the method embodiments. For the sake of brevity, they will not be elaborated here.

[0174] It should be understood that the transceiver unit 820 may be a transceiver, an input / output interface, or an interface circuit. The storage unit may be a memory. The processing unit 810 may be implemented by a processor. Figure 9 shows a schematic block diagram of another example of a communication device 900 provided in an embodiment of this application. As shown in Figure 9, the communication device 900 may include a processor 910, a memory 920, and a transceiver 930.

[0175] The communication device 800 shown in Figure 8 or the communication device 900 shown in Figure 9 can implement the steps performed by the network device or terminal device in the various embodiments of the aforementioned method 600. Similar descriptions can be found in the descriptions of the corresponding methods described above. To avoid repetition, they will not be repeated here.

[0176] It should also be understood that the communication device 800 shown in Figure 8 or the communication device 900 shown in Figure 9 can be a network device or a terminal device.

[0177] It should also be understood that the division of units in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, all units in the device can be implemented entirely through software calls from processing elements; all units can be implemented entirely in hardware; or some units can be implemented through software calls from processing elements, while others are implemented in hardware. For example, each unit can be a separate processing element, or it can be integrated into a chip within the device. Alternatively, it can be stored as a program in memory, and its function can be called and executed by a processing element within the device. Here, the processing element can also be called a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units can be implemented through integrated logic circuits in the processor element or through software calls from processing elements.

[0178] In one example, a unit in any of the above devices can be one or more integrated circuits configured to implement the methods described above, such as one or more application-specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), or a combination of at least two of these forms of integrated circuits. As another example, when a unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling programs. Furthermore, these units can be integrated together to implement a system-on-a-chip (SOC).

[0179] Figure 10 is a schematic diagram of the structure of a network device 1000 provided in an embodiment of this application, which can be used to implement the functions of the network device in the above method. The network device 1000 includes one or more radio frequency (RF) units, such as a remote radio unit (RRU) 1001 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 1002. The RRU 1001 can be called a transceiver unit, transceiver, transceiver circuit, or transceiver, etc., and may include at least one antenna 1011 and an RF unit 10012. The RRU 1001 is mainly used for transmitting and receiving RF signals and converting RF signals to baseband signals, for example, for sending signaling messages as described in the above embodiment to a terminal device. The BBU 1002 is mainly used for baseband processing and controlling the base station. The RRU 1001 and BBU 1002 can be physically arranged together or physically separated, i.e., a distributed base station.

[0180] The BBU 1002 serves as the control center of the base station, also known as a processing unit. It primarily performs baseband processing functions such as channel coding, multiplexing, modulation, and spread spectrum. For example, the BBU (processing unit) 1002 can control the base station to execute the network device operation procedures described in the above method embodiments.

[0181] In one example, the BBU1002 can be composed of one or more single boards. Multiple single boards can collectively support a single access standard wireless access network (such as an LTE system or a 5G system), or they can each support wireless access networks with different access standards. The BBU1002 also includes a memory 10021 and a processor 10022. The memory 10021 is used to store necessary instructions and data. For example, the memory 10021 stores the codebook as described in the above embodiments. The processor 10022 is used to control the base station to perform necessary actions, such as controlling the base station to execute the operation procedures related to the network device in the above method embodiments. The memory 10021 and processor 10022 can serve one or more single boards. That is, each single board can have its own memory and processor, or multiple single boards can share the same memory and processor. Furthermore, each single board can also have necessary circuitry.

[0182] In one possible implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of parts 1002 and 1001 can be implemented by SoC technology, for example, by a base station function chip. This base station function chip integrates a processor, memory, antenna interface, and other devices. The program for base station-related functions is stored in the memory, and the processor executes the program to implement the relevant functions of the base station. Optionally, the base station function chip can also read external memory to implement the relevant functions of the base station.

[0183] It should also be understood that the division of units in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, all units in the device can be implemented entirely through software calls from processing elements; all units can be implemented entirely in hardware; or some units can be implemented through software calls from processing elements, while others are implemented in hardware. For example, each unit can be a separate processing element, or it can be integrated into a chip within the device. Alternatively, it can be stored as a program in memory, and its function can be called and executed by a processing element within the device. Here, the processing element can also be called a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units can be implemented through integrated logic circuits in the processor element or through software calls from processing elements. In one example, a unit in any of the above devices can be one or more integrated circuits configured to implement the methods described above, such as one or more application-specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), or a combination of at least two of these forms of integrated circuits. As another example, when a unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling programs. Furthermore, these units can be integrated together to implement a system-on-a-chip (SOC).

[0184] This application also provides a chip system, as shown in FIG11, which includes at least one processor 1110 and at least one interface circuit 1120. The processor 1110 and the interface circuit 1120 can be interconnected via lines. For example, the interface circuit 1120 can be used to receive signals from other devices (e.g., the memory of network device 1000). As another example, the interface circuit 1120 can be used to send signals to other devices (e.g., the processor 1110). Exemplarily, the interface circuit 1120 can read instructions stored in memory and send the instructions to the processor 1110. When the instructions are executed by the processor 1110, the terminal device can perform the various steps executed by the terminal device in the above embodiments. Of course, the chip system may also include other discrete devices, which are not specifically limited in this application.

[0185] This application also provides a computer-readable storage medium for storing computer program code, the computer program including instructions for executing any of the communication methods provided in the embodiments of this application. The readable medium may be a read-only memory (ROM) or a random access memory (RAM), and this application does not impose any limitations on this.

[0186] This application also provides a computer program product including instructions that, when executed, cause a network device or a terminal device to perform operations corresponding to those described in the above methods.

[0187] This application also provides a chip located in a communication device. The chip includes a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input / output interface, pins, or circuitry. The processing unit can execute computer instructions to cause the communication device to perform any of the communication methods provided in the embodiments of this application.

[0188] Optionally, the computer instructions are stored in a storage unit.

[0189] Optionally, the storage unit can be an internal storage unit within the chip, such as a register or cache. Alternatively, it can be an external storage unit located within the terminal, such as a ROM or other types of static storage devices capable of storing static information and instructions, such as random access RAM. The processor mentioned above can be a CPU, microprocessor, ASIC, or one or more integrated circuits used to control the execution of programs for the aforementioned communication methods. The processing unit and the storage unit can be decoupled and disposed on different physical devices, connected via wired or wireless means to implement their respective functions, thereby supporting the system chip in implementing the various functions described in the above embodiments. Alternatively, the processing unit and the storage unit can also be coupled to the same device.

[0190] In this embodiment, the terminal device, computer-readable storage medium, computer program product or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding methods provided above, and will not be repeated here.

[0191] 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. Non-volatile memory can be ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be RAM, which is used as an external cache. RAM has various types, 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 link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0192] In this application, various objects such as messages / information / devices / network elements / systems / apparatus / actions / operations / processes / concepts may be named. It is understood that these specific names do not constitute a limitation on the relevant objects. The names may be changed depending on the scenario, context, or usage habits. The understanding of the technical meaning of the technical terms in this application should be mainly determined from their functions and technical effects embodied / performed in the technical solution.

[0193] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0194] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0195] The methods in the embodiments of this application can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, they can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed, in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server integrating one or more available media.

[0196] Those skilled in the art will 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.

[0197] 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 through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0198] 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.

[0199] In addition, 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.

[0200] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a readable 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 readable storage medium includes various media capable of storing program code, such as USB flash drives, external hard drives, ROM, RAM, magnetic disks, or optical disks.

Claims

1. A communication method, characterized in that, The method is applied to a network device, and the method includes: A first signal is transmitted on a carrier component, the carrier component comprising multiple bandwidth portions; Send a first indication message to the terminal device, the first indication message being used to instruct the terminal device to receive a portion of the first signal in a first bandwidth portion, wherein the plurality of bandwidth portions include the first bandwidth portion.

2. The method according to claim 1, characterized in that, The random number seed corresponding to the sequence of the first signal satisfies the following formula: Among them, c init This represents the initial value of the random number seed. This indicates the number of symbols in a time slot. The value represents the slot index within the subframe, μ represents the subcarrier spacing, and l represents the current symbol index within the slot. The identifier of the cell to which the terminal device is connected.

3. The method according to claim 1 or 2, characterized in that, The sequence of the first signal is mapped onto each resource block of the carrier component.

4. The method according to claim 3, characterized in that, The sequence mapping of the first signal satisfies the following formula: n=0…the largest physical resource block Where, β CSIRS Indicates the power scaling factor, w f (K') denotes the sign function of the frequency domain subcarrier, w t (l') represents the symbol function of the time-domain OFDM symbol. This represents the sequence in the first signal.

5. The method according to any one of claims 1-4, characterized in that, The carrier component includes any one of the following: 60MHz, 80MHz, or 100MHz.

6. The method according to claim 4 or 5, characterized in that, The maximum physical resource block can be any of the following: 160, 216, 272, 64, or 52.

7. The method according to any one of claims 1-6, characterized in that, The method further includes: Based on the first bandwidth, subcarrier spacing, and first position allocated by the network device to the terminal device, the initial position and the end position of the terminal device receiving the first signal are determined, and the first indication information includes the initial position and the end position of the first signal.

8. The method according to any one of claims 1-6, characterized in that, The first indication information includes a first bandwidth portion allocated by the network device to the terminal device, the subcarrier spacing, and a first position, wherein the first position is used to indicate a specific reference position for the terminal device to receive the first signal.

9. The method according to any one of claims 1-8, characterized in that, The first signal is a CSI-RS signal.

10. The method according to claim 9, characterized in that, The CSI-RS signal is the TRS reference signal.

11. A communication method, characterized in that, The method is applied to a terminal device, and the method includes: The terminal device receives first indication information from a network device, the first indication information being used to instruct the terminal device to acquire a first signal in a first bandwidth portion, the network device transmitting the first signal on a carrier component, the carrier component including multiple bandwidth portions, the multiple bandwidth portions including the first bandwidth portion; According to the first instruction information, a portion of the first signal is received in the first bandwidth portion.

12. The method according to claim 11, characterized in that, The random number seed corresponding to the sequence of the first signal satisfies the following formula: Among them, c init This represents the initial value of the random number seed. This indicates the number of symbols in a time slot. The value represents the slot index within the subframe, μ represents the subcarrier spacing, and l represents the current symbol index within the slot. The sign indicating the residential area.

13. The method according to claim 11 or 12, characterized in that, The sequence of the first signal is mapped onto each resource block of the carrier component.

14. The method according to claim 13, characterized in that, The sequence mapping of the first signal satisfies the following formula: n=0…the largest physical resource block Where, β CSIRS Indicates the power scaling factor, w f (K') denotes the sign function of the frequency domain subcarrier, w t (l') represents the symbol function of the time-domain OFDM symbol. This represents the sequence in the first signal.

15. The method according to any one of claims 11-14, characterized in that, The carrier component includes any one of the following: 60MHz, 80MHz, or 100MHz.

16. The method according to claim 14 or 15, characterized in that, The maximum physical resource block can be any of the following: 160, 216, 272, 64, or 52.

17. The method according to any one of claims 11-16, characterized in that, The first indication information includes the initial position and the end position of the first signal.

18. The method according to any one of claims 11-16, characterized in that, The first indication information includes a first bandwidth portion allocated by the network device to the terminal device, the subcarrier spacing, and a first position, wherein the first position is used to indicate a specific reference position for the terminal device to receive the first signal.

19. The method according to claim 18, characterized in that, The method further includes: Based on the first bandwidth, subcarrier spacing, and first position allocated by the network device to the terminal device, the initial position and the end position for receiving the first signal are determined. Receiving the first signal in the first bandwidth portion includes: The first signal is received at the initial position and the end position.

20. A communication device, characterized in that, include: A module or unit for performing the method as described in any one of claims 1 to 19.

21. A communication device, characterized in that, The apparatus includes at least one processor for executing a computer program or instructions to cause the method as described in any one of claims 1 to 19 to be performed.

22. The apparatus as claimed in claim 21, characterized in that, The device further includes a memory that stores the computer program or instructions.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when run on a computer, causes the computer to perform the method as described in any one of claims 1 to 19.

24. A computer program product, characterized in that, include: A computer program that, when run on a computer, causes the computer to perform the method as described in any one of claims 1 to 19.

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