Signal transmission method and device, terminal, network side equipment and readable storage medium

Abstract

The invention discloses a signal transmission method and device, a terminal, network side equipment and a readable storage medium, and belongs to the technical field of communication, and the signal transmission method comprises the steps that first equipment sends a physical signal or a physical channel to second equipment in a frequency domain range on K sub-channels, and K is a positive integer greater than 1; and the first equipment sends a target reference signal to the second equipment, wherein the target reference signal is used for determining an error between signals or channels on adjacent sub-channels in the sub-channels for sending the physical signal or the physical channel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a signal transmission method and device, a terminal, a network side equipment and a readable storage medium. BACKGROUND

[0002] In future sixth generation (6G) communication, when a sending device communicates with a receiving device, the sending device can first divide a carrier or a band width part (BWP) with a larger bandwidth into multiple sub-channels, and use multiple sending links corresponding to the multiple sub-channels to generate multiple signals or multiple channels with a smaller bandwidth according to data to be sent, and then superimpose the multiple signals or multiple channels to obtain a physical signal or a physical channel with a larger bandwidth, and send the physical signal or the physical channel to the receiving device, so as to send the physical signal or the physical channel to the receiving device through the multiple sub-channels, so that the receiving device can obtain the data according to the physical signal or the physical channel.

[0003] However, since the multiple signals or multiple channels are generated using multiple sending links when the physical signal or the physical channel with a larger bandwidth is sent to the receiving device through the multiple sub-channels, errors (such as phase offsets, etc.) may occur between the signals or channels on different sub-channels, thereby causing the quality of the physical signal or the physical channel to decrease, and thus causing the communication quality to be low. SUMMARY

[0004] Embodiments of the present application provide a signal transmission method and device, a terminal, a network side equipment and a readable storage medium, which can solve the problem of low communication quality.

[0005] In a first aspect, a signal transmission method is provided, which is performed by a first device, and the method comprises: the first device sending a physical signal or a physical channel to a second device in a frequency domain range on K sub-channels, K being a positive integer greater than 1; and the first device sending a target reference signal to the second device, the target reference signal being used to determine an error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signal or the physical channel is sent.

[0006] In a second aspect, a signal transmission device is provided, which comprises: a sending module configured to send a physical signal or a physical channel to a second device on K sub-channels, K being a positive integer greater than 1; and send a target reference signal to the second device, the target reference signal being used to determine an error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signal or the physical channel is sent.

[0007] In a third aspect, a signal transmission device is provided, which is configured to perform the steps of the method according to the first aspect.

[0008] In a fourth aspect, a terminal is provided, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement steps of the method according to the first aspect.

[0009] In a fifth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is configured to transmit a physical signal or a physical channel to a second device in a frequency domain range of K sub-channels, K being a positive integer greater than 1, and transmit a target reference signal to the second device, the target reference signal being used to determine an error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signal or the physical channel is transmitted.

[0010] In a sixth aspect, a network-side device is provided, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement steps of the method according to the first aspect.

[0011] In a seventh aspect, a network-side device is provided, comprising a processor and a communication interface, wherein the communication interface is configured to transmit a physical signal or a physical channel to a second device on N sub-channels, N being a positive integer greater than 1, and transmit a target reference signal to the second device, the target reference signal being used to determine an error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signal or the physical channel is transmitted.

[0012] In an eighth aspect, a readable storage medium is provided, the readable storage medium storing programs or instructions, the programs or instructions, when executed by a processor, implement steps of the method according to the first aspect.

[0013] In a ninth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute programs or instructions to implement steps of the method according to the first aspect.

[0014] In a tenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement steps of the method according to the first aspect.

[0015] In the embodiment of the present application, the first device can send a physical signal or a physical channel to the second device in the frequency domain range of K sub-channels, and send a target reference signal to the second device for determining the error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signal or the physical channel is sent; wherein K is a positive integer greater than 1. Since the first device can send a target reference signal to the second device for determining the error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signal or the physical channel is sent in the case of sending a physical signal or a physical channel to the second device on K sub-channels, so that the second device can determine the error between signals or channels on adjacent sub-channels based on the target reference signal and compensate for the error, the error between signals or channels on different sub-channels can be reduced, thereby improving the quality of the above-mentioned physical signal or physical channel, and thus the communication quality can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a block diagram of a wireless communication system provided by the embodiment of the present application;

[0017] Figure 2 is a schematic diagram of generating a physical signal or a physical channel using N transmission links corresponding to N sub-channels in the related art;

[0018] Figure 3 is a flowchart of a signal transmission method provided by the embodiment of the present application;

[0019] Figure 4 is one of the schematic diagrams of the transmission pattern of the first reference signal provided by the embodiment of the present application;

[0020] Figure 5 is another schematic diagram of the transmission pattern of the first reference signal provided by the embodiment of the present application;

[0021] Figure 6 is a third schematic diagram of the transmission pattern of the first reference signal provided by the embodiment of the present application;

[0022] Figure 7 is a fourth schematic diagram of the transmission pattern of the first reference signal provided by the embodiment of the present application;

[0023] Figure 8 is a fifth schematic diagram of the transmission pattern of the first reference signal provided by the embodiment of the present application;

[0024] Figure 9 is one of the schematic diagrams of the transmission pattern of the second reference signal provided by the embodiment of the present application;

[0025] Figure 10 is another schematic diagram of the transmission pattern of the second reference signal provided by the embodiment of the present application;

[0026] Figure 11A FIG. 3 is a schematic diagram of a third transmission pattern of a second reference signal according to an embodiment of the present application;

[0027] Figure 11B FIG. 4 is a schematic diagram of a fourth transmission pattern of a second reference signal according to an embodiment of the present application;

[0028] Figure 11C FIG. 5 is a schematic diagram of a fifth transmission pattern of a second reference signal according to an embodiment of the present application;

[0029] Figure 12A FIG. 6 is a schematic diagram of a sixth transmission pattern of a second reference signal according to an embodiment of the present application;

[0030] Figure 12B FIG. 7 is a schematic diagram of a seventh transmission pattern of a second reference signal according to an embodiment of the present application;

[0031] Figure 12C FIG. 8 is a schematic diagram of an eighth transmission pattern of a second reference signal according to an embodiment of the present application;

[0032] Figure 13A FIG. 9 is a schematic diagram of a ninth transmission pattern of a second reference signal according to an embodiment of the present application;

[0033] Figure 13B FIG. 10 is a schematic diagram of a tenth transmission pattern of a second reference signal according to an embodiment of the present application;

[0034] Figure 14A FIG. 11 is a schematic diagram of an eleventh transmission pattern of a second reference signal according to an embodiment of the present application;

[0035] Figure 14B FIG. 12 is a schematic diagram of a twelfth transmission pattern of a second reference signal according to an embodiment of the present application;

[0036] Figure 14C FIG. 13 is a schematic diagram of a thirteenth transmission pattern of a second reference signal according to an embodiment of the present application;

[0037] Figure 14D FIG. 14 is a schematic diagram of a fourteenth transmission pattern of a second reference signal according to an embodiment of the present application;

[0038] Figure 15A FIG. 15 is a schematic diagram of a fifteenth transmission pattern of a second reference signal according to an embodiment of the present application;

[0039] Figure 15B FIG. 16 is a schematic diagram of a sixteenth transmission pattern of a second reference signal according to an embodiment of the present application;

[0040] Figure 16AFig. 17 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0041] Figure 16B Fig. 18 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0042] Figure 17A Fig. 19 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0043] Figure 17B Fig. 20 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0044] Figure 17C Fig. 21 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0045] Figure 18 Fig. 22 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0046] Figure 19A Fig. 23 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0047] Figure 19B Fig. 24 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0048] Figure 20A Fig. 25 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0049] Figure 20B Fig. 26 is a schematic diagram of a sending pattern of a second reference signal according to an embodiment of the present application;

[0050] Figure 21 Fig. 27 is a structural schematic diagram of a signal transmission device according to an embodiment of the present application;

[0051] Figure 22 Fig. 28 is a hardware structural schematic diagram of a communication device according to an embodiment of the present application;

[0052] Figure 23 Fig. 29 is a hardware structural schematic diagram of a terminal according to an embodiment of the present application;

[0053] Figure 24 Fig. 30 is a hardware structural schematic diagram of a network side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0054] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art are within the scope of protection of the present application.

[0055] The terms related to the embodiments of the present application will be described below.

[0056] 1, Channel State Information-Reference Signal (CSI-RS)

[0057] Generally, in the fifth generation (5th Generation, 5G) communication, the CSI-RS mainly includes the following types:

[0058] a) Non-Zero-Power CSI-RS (NZP-CSI-RS), used for measuring the precoding matrix indicator (PMI), rank indication (RI), channel quality indicator (COI), layer indicator (LI), layer 1 reference signal received power (L1-RSRP), layer 1 signal to interference plus noise ratio (L1-SINR), and intra-cell interference measurement. Among them, the intra-cell interference measurement can include: measuring the intra-cell interference when multi-user (Multi-User Multiple-Input Multiple-Output, MU-MIMO) scheduling;

[0059] b) Zero-Power CSI-RS (ZP-CSI-RS), used for rate matching (Rate Matching);

[0060] c) Channel State Information-Interference Measurement (CSI-IM), used for measuring the interference of adjacent cells.

[0061] Currently, up to 32 ports can be configured in a CSI-RS resource. Different port resources can be time division multiplexed, frequency division multiplexed, and code division multiplexed. Among them, code division multiplexing can be distinguished by time-frequency domain orthogonal cover code (OCC) code. The OCC types currently supported by CSI-RS code division multiplexing (CDM) include: No CDM, FD-CDM2, CDM4 (FD2, TD2), CDM8 (FD2, TD4). The ordering of the CSI-RS port index is ordered in the following order: first within the CDM group, then the frequency domain CDM group, and then the time domain CDM group.

[0062] Currently, the CSI-RS resource mapping pattern is by default within a slot (Slot) and a resource block (Resource Block, RB).

[0063] 2. Other terms

[0064] The terms "first", "second", and the like in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are usually a class, not limited to the number of objects, for example. The first object can be one or more. In addition, "or" in this application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0065] The term "indicate" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). Among them, the direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed or requested results, etc. in the sent indication; the indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or judging and determining the operation to be performed or the requested result according to the judgment result.

[0066] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems. th

[0067] Figure 1 ​A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can be a terminal side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook, a Personal Digital Assistant (PDA), a palm PC, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture, etc.), a game console, a Personal Computer (PC), a kiosk, or a self-service machine, etc. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothes, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can include an access network device or a core network device. The access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay base station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, so long as 5 30 the base station is capable of achieving the same technical effect, and the base station is not limited to a specific technical term. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0068] The signal transmission method, device, terminal, network side equipment and readable storage medium provided by the embodiments of the present application will be described in detail below in combination with the drawings and some embodiments and application scenarios.

[0069] In future 6G communication, the bandwidth of one carrier or one BWP is usually large. Therefore, when a sending device communicates with a receiving device, if data to be sent by the sending device to the receiving device is configured in one carrier or one BWP, the sending device can first divide the one carrier or one BWP with a large bandwidth into multiple sub-channels, for example, K sub-channels, K being a positive integer greater than 1, and generate multiple signals or multiple channels of a waveform with a small bandwidth using N sending links corresponding to N sub-channels in the K sub-channels. Specifically, as shown in FIG. 1, a sending device 1 and a receiving device 2 communicate with each other, and the sending device 1 has a large bandwidth carrier or a large bandwidth BWP, which is divided into K sub-channels, and the receiving device 2 has a small bandwidth carrier or a small bandwidth BWP, which is divided into N sub-channels. Figure 2As shown, the sending device can input a data source into a digital signal processor (DSP) of each sending link, such as DSP TX1, DSP TX2,..., DSP TXN, and perform digital to analog conversion (DAC) processing through each DSP, and perform low-pass filter (LP) processing on the DAC-processed signal, and perform amplification processing by a power amplifier (PA) to obtain N signals or N channels of a waveform with a small bandwidth. It can be understood that each of the N signals is processed by one sending link corresponding to one subchannel, i.e., each signal is sent on one subchannel, or each of the N channels is processed by one sending link corresponding to one subchannel, i.e., each channel is sent on one subchannel. Thus, the sending device can superimpose the N signals or N channels first, and send the superimposed physical signal or physical channel to the receiving device through the radio frequency antenna of the sending device, so as to send the physical signal or physical channel to the receiving device through N subchannels, so that the receiving device can obtain the data according to the physical signal or physical channel. However, since the above N signals or N channels of the waveform with a small bandwidth are generated using N sending links, that is, the signals or channels on different subchannels are generated using different hardware of different sending links, for example Figure 2 the first signal or channel is generated using DSP TX1, LP, and PA of the first sending link, and the second signal or channel is generated using DSP TX2, LP, and PA different from DSP TX1, LP, and PA of the second sending link, so that errors (such as phase deviation, time offset, power offset, etc.) between the signals or channels on different subchannels may occur, thereby causing the quality of the above physical signal or physical channel obtained by superimposition to decrease, which results in low communication quality.

[0070] However, in the embodiments of the present application, in the case where the sending device sends a physical signal or physical channel to the receiving device within the frequency domain range of K subchannels, the sending device can send one reference signal to the receiving device, which is used to determine the errors between the signals or channels on adjacent subchannels in the subchannels (i.e., N subchannels) in which the physical signal or physical channel is sent, so that the receiving device can determine the errors between the signals or channels on adjacent subchannels in the N subchannels based on the one reference signal, and perform compensation processing to reduce the errors between the signals or channels on different subchannels, so as to improve the quality of the above physical signal or physical channel, and thus improve the communication quality.

[0071] The execution subject of the signal transmission method provided in the embodiments of the present application can be a signal transmission device, or a first device, or a functional module or entity in the first device. The embodiments of the present application take the first device executing the signal transmission method as an example to illustrate the signal transmission method provided in the embodiments of the present application.

[0072] Figure 3 A flowchart of a signal transmission method provided in the embodiments of the present application is shown. As shown in the figure, the signal transmission method provided in the embodiments of the present application can include the following steps 101 and 102. Figure 3

[0073] Step 101: The first device sends a physical signal or a physical channel to a second device in a frequency domain range of K subchannels.

[0074] In the embodiments of the present application, K is a positive integer greater than 1.

[0075] In some embodiments of the present application, the first device can be any of the following: a terminal, a network side device. The second device can be any of the following: a terminal, a network side device.

[0076] In some embodiments of the present application, the K subchannels are located in one carrier or one BWP, or in the frequency domain range of the physical signal or the physical channel. For example, the carrier or BWP is divided into K subchannels, and the first device sends the physical signal or the physical channel in all or part of the K subchannels (for example, the physical signal or channel sent by the first device occupies Z subchannels in K, Z is less than or equal to K, and Z is greater than 1); or, the physical signal or physical channel sent by the second device is divided into K subchannels, that is, the physical signal or physical channel sent by the second device occupies K subchannels.

[0077] In some embodiments of the present application, the K subchannels are continuous in the frequency domain.

[0078] In some embodiments of the present application, each of the K subchannels contains continuous physical resource blocks (PRBs).

[0079] In some embodiments of the present application, the numerology of the K subchannels is consistent with the BWP in which the K subchannels are located.

[0080] In some embodiments of the present application, the subchannel can also be referred to as a subBWP or a subband.

[0081] ​Therefore, the first device can accurately divide the K sub-channels to obtain the K sub-channels located in one carrier or one BWP, and accurately transmit the physical signal or the physical channel to the second device on the K sub-channels.

[0082] In some embodiments of the present application, in the case that the first device needs to transmit data to the second device, if the data is configured in one carrier or one BWP, the first device can first divide the one carrier or one BWP into K sub-channels, and then transmit the physical signal or the physical channel to the second device on the K sub-channels.

[0083] It can be understood that if the data is configured in one carrier or one BWP, the bandwidth required for transmitting the data can be considered as a large bandwidth. Therefore, in order to reduce the difficulty of generating the physical signal or the physical channel with the ultra-wideband waveform according to the data using one transmission link corresponding to one carrier or one BWP, the first device can divide the one carrier or one BWP into K sub-channels. In the subsequent steps, the first device only needs to use K transmission links corresponding to the K sub-channels to generate K signals or K channels with smaller bandwidth, and then superimposes the K signals or K channels to obtain the physical signal or the physical channel with the ultra-wideband waveform, without directly generating the physical signal or the physical channel with the ultra-wideband waveform, thereby reducing the difficulty of generating the physical signal or the physical channel with the ultra-wideband waveform.

[0084] It should be noted that the "large bandwidth" can be understood as a bandwidth with a bandwidth value greater than or equal to a preset bandwidth value.

[0085] In some examples, the first device can directly divide the above-mentioned large bandwidth into K sub-channels, and instruct other devices (for example, the second device) to also divide the large bandwidth into K sub-channels; or, after other devices divide the above-mentioned large bandwidth into K sub-channels, the first device can also divide the above-mentioned large bandwidth into K sub-channels according to the indication of other devices (for example, the second device), which will be illustrated by examples below.

[0086] In some embodiments of the present application, before the above-mentioned step 101, the signal transmission method provided by the embodiments of the present application can further include at least one of the following steps 201 or 202.

[0087] In step 201, the first device receives first configuration information from the second device.

[0088] In the embodiments of the present application, the first configuration information is used to configure K sub-channels or N sub-channels, and the N sub-channels are sub-channels for transmitting the physical signal or the physical channel, and N is a positive integer greater than 1.

[0089] In some embodiments of the present application, the first configuration information can include at least one of the following: the frequency domain position of the frequency domain boundary between adjacent sub-channels in the K sub-channels, the number of each sub-channel, the starting frequency domain position of each sub-channel, and the bandwidth of each sub-channel. Of course, the first configuration information can also include other information, which is not limited herein.

[0090] In some embodiments of the present application, in the case that the first device is to send a physical channel or a physical signal to the second device, if the physical channel or the physical signal is configured in one carrier or one BWP, the second device can first divide the one carrier or the one BWP into K sub-channels (or the frequency domain range occupied by the physical channel or the physical signal), and generate the first configuration information according to the K sub-channels, and send the first configuration information to the first device, so that the first device can receive the first configuration information from the second device.

[0091] In some examples, in the case that the first device receives the first configuration information, the first device can configure the K sub-channels according to the first configuration information, so that the first device can send the above-mentioned physical signal or physical channel to the second device on the K sub-channels.

[0092] In some examples, in the case that the first device receives the first configuration information, the first device can configure the K sub-channels according to the first configuration information, and further instruct the second device to perform transmission of the physical signal or the physical channel according to the K sub-channels.

[0093] In some examples, the first configuration information can be part of the second device capability, and the first configuration information is included in the second device capability reporting.

[0094] Step 202, the first device sends the first configuration information to the second device.

[0095] In the embodiments of the present application, the first configuration information is used to configure the K sub-channels or the N sub-channels, the N sub-channels are the sub-channels in the K sub-channels for sending the physical signal or the physical channel, and N is a positive integer greater than 1.

[0096] In some embodiments of the present application, in the case that the first device is to send a physical channel or a physical signal to the second device, if the physical channel or the physical signal is configured in one carrier or one BWP, the first device can first divide the one carrier or the one BWP into K sub-channels (or the frequency domain range occupied by the physical channel or the signal), and generate the first configuration information according to the K sub-channels, and send the first configuration information to the second device, so that the second device can receive the first configuration information from the first device.

[0097] It should be noted that the description of the information included in the first configuration information can refer to the specific description in the above embodiments, and the embodiments of the present application will not be repeated here.

[0098] In some examples, the first configuration information can belong to a part of the first device capability, and the first configuration information is included in the first device capability report.

[0099] In some embodiments of the present application, in the case that the first device wants to send data to the second device, if the data is configured in one carrier or one BWP, the first device can first divide the one carrier or one BWP into K sub-channels (or physical channel or signal occupied frequency domain range), and generate the first configuration information according to the K sub-channels, and send the first configuration information to the second device.

[0100] In some examples, in the case that the second device receives the first configuration information, the second device can configure K sub-channels according to the first configuration information, so that the second device can receive the above-mentioned physical signal or physical channel from the first device on the K sub-channels.

[0101] As can be seen, since the first device can receive the first configuration information for configuring K sub-channels from the second device, the first device can accurately determine the K sub-channels according to the first configuration information, so in the subsequent step, the first device can accurately send the physical signal or physical channel to the second device on the K sub-channels, so that the second device can receive the physical signal or physical channel on the K sub-channels; or since the first device can send the first configuration information for configuring N sub-channels to the second device, so the second device can accurately determine the K sub-channels according to the first configuration information, so in the subsequent step, the second device can accurately receive the physical signal or physical channel from the first device on the K sub-channels; thereby avoiding the case that the second device cannot receive the physical signal or physical channel, so as to improve the communication quality of the first device and the second device in communication.

[0102] Step 102, the first device sends a target reference signal to the second device.

[0103] In the embodiments of the present application, the above-mentioned target reference signal is used to determine (or estimate, compensate, suppress) the error between the signals or channels on the adjacent sub-channels in the sub-channels for sending the physical signal or physical channel.

[0104] In some embodiments of the present application, the above-mentioned target reference signal can include at least one of the following: an existing reference signal (such as the first reference signal in the following embodiments), a new reference signal (such as the second reference signal in the following embodiments).

[0105] In some examples, the existing existing reference signal can include at least one of the following: NZP-CSI-RS, ZP-CSI-RS, CSI-IM, De Modulation Reference Signal (DMRS), Positioning Reference Signal (PRS), Tracking Reference Signal (TRS), Sounding Reference Signal (SRS). Of course, the existing existing reference signal can also include other reference signals, which are not limited herein.

[0106] In some embodiments of the present application, the error can include at least one of the following: phase offset, time offset, power translation, etc. Wherein, the "phase offset" can be understood as: the phase inconsistency between the signals or channels on adjacent sub-channels; the "power translation" can be understood as: the power imbalance between the signals or channels on adjacent sub-channels.

[0107] It should be noted that the "signal or channel on the sub-channel" can be understood as: the signal or channel processed by the transmission link corresponding to the sub-channel.

[0108] In some embodiments of the present application, the first device can send the target reference signal to the second device at the same time as sending the physical signal or physical channel to the second device, that is, the first device can perform step 102 at the same time as performing step 101; or the first device can first send the physical signal or physical channel to the second device, and then send the target reference signal to the second device, that is, the first device can first perform step 101, and then perform step 102; or the first device can first send the target reference signal to the second device, and then send the physical signal or physical channel, that is, the first device can first perform step 102, and then perform step 101. It should be noted that, Figure 3 The first device performs step 101 first and then step 102.

[0109] The transmission pattern of the target reference signal will be described in detail below with two different examples.

[0110] Example one,

[0111] In some embodiments of the present application, the target reference signal includes a first reference signal, which is transmitted across N sub-channels, and the N sub-channels are the sub-channels transmitting the physical signal or physical channel in the K sub-channels, and N is a positive integer greater than 1.

[0112] In some embodiments of the present application, the first reference signal can include at least one of the following: NZP-CSI-RS, ZP-CSI-RS, CSI-IM, DMRS, PRS, TRS, SRS. Of course, the first reference signal can also include other reference signals, which are not limited herein by embodiments of the present application. The first reference signal is generally used to receive and process the physical signal or physical channel in step 101, such as channel estimation, etc.

[0113] In some examples, the first reference signal described above can be the same signal as the physical signal sent by the first device to the second device in step 101.

[0114] In embodiments of the present application, the first reference signal described above is transmitted at a first frequency domain density on a first resource of the first reference signal, and at a second frequency domain density on a second resource of the first reference signal other than the first resource, the first frequency domain density being greater than the second frequency domain density; the first frequency domain range of the first resource is located in the frequency domain range corresponding to the N sub-channels, and the first frequency domain range includes: the first frequency domain boundary among the T frequency domain boundaries between the N sub-channels, T being a positive integer.

[0115] Wherein, the N sub-channels are sub-channels in the K sub-channels. Optionally, N is less than or equal to K.

[0116] In some examples, the N sub-channels are continuous.

[0117] In some embodiments of the present application, the CC or BWP is divided into K sub-channels, and the frequency domain range of the first reference signal can be all sub-channels of the K sub-channels (i.e. N = K) or part of the sub-channels (i.e. N < K); or the transmitted physical channel or physical signal is divided into K sub-channels, and the frequency domain range of the first reference signal can be all sub-channels of the K sub-channels (i.e. N = K) or part of the sub-channels (i.e. N < K); or the CC or BWP is divided into K sub-channels, and the physical signal or physical channel is divided into Z sub-channels in K (Z <= K), and the frequency domain range of the first reference signal can be all sub-channels of the Z sub-channels (i.e. N = Z) or part of the sub-channels (i.e. N < Z), or the frequency domain range of the first reference signal has no direct relationship with the Z sub-channels divided by the physical signal or physical channel, and is only transmitted in the N sub-channels in K.

[0118] Optionally, in step 201, the first device receives the first configuration information from the second device, and the first configuration information is used to configure the K sub-channels.

[0119] Optionally, in step 201, the first device receives the first configuration information from the second device, and the first configuration information is used to configure the N sub-channels.

[0120] Optionally, the first device receives, from the second device, second configuration information in step 202, the first configuration information being used for configuring the K sub-channels.

[0121] Optionally, the first device receives, from the second device, second configuration information in step 202, the first configuration information being used for configuring the N sub-channels.

[0122] The specific implementation can be referred to step 201.

[0123] Optionally, the N contiguous sub-channels in the K sub-channels can be determined according to at least one of the following configurations: a starting sub-channel number, a sub-channel number.

[0124] In some embodiments of the present application, the first resource can be understood as a part of resource used for transmitting the first reference signal, and the first resource can include at least one of time domain resource and frequency domain resource. The second resource can be understood as a part of resource used for transmitting the first reference signal, and the second resource can include at least one of time domain resource and frequency domain resource.

[0125] In some embodiments of the present application, the second frequency domain density can be understood as a frequency domain density of the resource of the first reference signal when the first reference signal is normally transmitted.

[0126] In some embodiments of the present application, the first frequency domain range can be a frequency domain range of the first resource.

[0127] In some embodiments of the present application, the N sub-channels can include N-1 frequency domain boundaries. The T frequency domain boundaries can be all of the N-1 frequency domain boundaries, that is, T can be equal to N-1; or the T frequency domain boundaries can be part of the N-1 frequency domain boundaries, that is, T can be less than N-1.

[0128] In some examples, when the T frequency domain boundaries are part of the N-1 frequency domain boundaries, the T frequency domain boundaries can be the frequency domain boundaries indicated by the network side device in the N-1 frequency domain boundaries; for example, the first device can receive indication information from the network side device in advance, the indication information indicating the T frequency domain boundaries in the N-1 frequency domain boundaries, so that the first device can determine the T frequency domain boundaries; or the T frequency domain boundaries can be determined by protocol.

[0129] In some embodiments of the present application, the first frequency domain boundary can be at least part of the T frequency domain boundaries. The number of the first frequency domain boundaries can be at least one.

[0130] For example, Figure 4A frequency domain resource diagram of the first reference signal is shown. It is assumed that the N sub-channels include Subchannel 1 and Subchannel 2, as shown in Figure 4 the first reference signal is transmitted across Subchannel 1 and Subchannel 2, a first frequency domain range (e.g., frequency domain range 10) of the first resource is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and the frequency domain range 10 includes a first frequency domain boundary (e.g., frequency domain boundary 11) of the T frequency domain boundaries between Subchannel 1 and Subchannel 2, the first reference signal is transmitted on the first resource at a first frequency domain density (i.e., a higher frequency domain density), for example, the first reference signal is transmitted at a higher frequency domain density in the frequency domain range 10, and is transmitted on the second resource at a second frequency domain density (i.e., a lower frequency domain density), for example, the first reference signal is transmitted at a lower frequency domain density in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 except for the frequency domain range 10. It should be noted that in Figure 4 each small square represents one RE, and each column of REs corresponds to one OFDM symbol.

[0131] In some embodiments of the present application, the first reference signal transmitted on the first resource can be used to transmit the error between signals or channels on adjacent sub-channels of the sub-channels of the physical signal or physical channel.

[0132] As can be seen, since the first reference signal can be transmitted at a higher first frequency domain density on the first resource, i.e., the first reference signal can be transmitted at a higher first frequency domain density in the frequency domain range including the first frequency domain boundary between the N sub-channels, the impact of frequency domain selective fading on the first reference signal transmitted on the first resource can be reduced, thereby improving the accuracy of the error between signals or channels on adjacent sub-channels determined using the first reference signal.

[0133] In some embodiments of the present application, the above-mentioned first frequency domain range satisfies at least one of the following:

[0134] The first frequency domain range is determined by a first frequency domain offset and a first bandwidth;

[0135] The first frequency domain range is determined by a first frequency domain boundary and a first bandwidth;

[0136] The first frequency domain range is determined by a starting frequency domain position of the first frequency domain range and a first bandwidth;

[0137] The bandwidth of the first frequency domain range is a second bandwidth;

[0138] The number of first frequency domain ranges is determined by the number T of the T frequency domain boundaries.

[0139] In the embodiments of the present application, the first frequency domain offset is a frequency domain offset of a starting frequency domain position of the first frequency domain range and the first frequency domain boundary.

[0140] In some embodiments of the present application, the first frequency domain offset is in units of resource elements (REs), that is, the first frequency domain offset is an RE offset.

[0141] Optionally, the starting frequency domain position of the first frequency domain range comprises an RB offset and an RE offset. The RB offset is used to determine an RB in which the starting frequency domain position is located, and the RE offset is used to determine which RE of the RB in which the starting frequency domain position is located.

[0142] In some embodiments of the present application, the first frequency domain offset, the first bandwidth, and the starting frequency domain position of the first frequency domain range are determined by at least one of the following: network side device indication, second device indication, protocol agreement, and first device determination.

[0143] If the first frequency domain offset, the first bandwidth, and the starting frequency domain position of the first frequency domain range are determined by the first device, the corresponding configuration is indicated by the first device to the network side device or the second device.

[0144] In some embodiments of the present application, in the case where the first frequency domain range is determined by the first frequency domain offset and the first bandwidth, the first device can first determine the frequency domain position of the first frequency domain boundary, and then determine the starting frequency domain position of the first frequency domain range according to the frequency domain position of the first frequency domain boundary and the first frequency domain offset, so that the first device can determine the frequency domain range of the first bandwidth starting from the starting frequency domain position of the first frequency domain range as the first frequency domain range.

[0145] In some embodiments of the present application, in the case where the first frequency domain range is determined by the first frequency domain boundary and the first bandwidth, the first device can determine, as the first frequency domain range, a frequency domain range with the frequency domain position of the first frequency domain boundary as the center and with a bandwidth equal to the first bandwidth.

[0146] In some embodiments of the present application, in the case where the first frequency domain range is determined by the starting frequency domain position of the first frequency domain range and the first bandwidth, the first device can directly determine, as the first frequency domain range, the frequency domain range of the first bandwidth starting from the starting frequency domain position of the first frequency domain range.

[0147] In the embodiments of the present application, the second bandwidth is equal to a frequency domain interval between two adjacent REs of the second resource in the second frequency domain range.

[0148] In some embodiments of the present application, the unit of the second bandwidth can be an RE.

[0149] In some embodiments of the present application, the second frequency domain range can be a frequency domain range of the second resource.

[0150] In some embodiments of the present application, in a case where the bandwidth of the first frequency domain range is a second bandwidth, the second bandwidth can be equal to a frequency domain interval from one RE of the two REs adjacent to each other of the second resource in the second frequency domain range to another RE.

[0151] In some embodiments of the present application, the number of the first frequency domain ranges can be equal to the number T of the T frequency domain boundaries. Alternatively, the number of the first frequency domain ranges can be equal to the number of part of the T frequency domain boundaries, which can be indicated by the network side device or agreed by protocol.

[0152] As can be seen, since the condition required to be met by the first frequency domain range is specified in the embodiments of the present application, the first device can accurately determine the first frequency domain range according to the condition, so as to accurately determine the first resource, and thus the first device can accurately transmit the first reference signal on the first resource with the first frequency domain density and transmit the first reference signal on the second resource with the second frequency domain density.

[0153] In some embodiments of the present application, the first frequency domain density satisfies at least one of the following:

[0154] The first frequency domain density is determined by the REs of the first resource that are continuous in the first frequency domain range;

[0155] The first frequency domain density is determined by the REs of the first resource that are non-continuous and equally spaced in the first frequency domain range.

[0156] In some embodiments of the present application, in a case where the first frequency domain density is determined by the REs of the first resource that are continuous in the first frequency domain range, the first device can determine the first frequency domain density as a ratio between the number of the REs of the first resource that are continuous in the first frequency domain range and the total number of the REs in the first frequency domain range; or, the REs of the first resource that are continuous in the first frequency domain range are considered as the first reference signal being transmitted with the frequency domain density of Comb-1 in the first resource.

[0157] In some embodiments of the present application, in a case where the first frequency domain density is determined by the REs of the first resource that are non-continuous and equally spaced in the first frequency domain range, the first device can determine the first frequency domain density as a ratio between the number of the REs of the first resource that are non-continuous and equally spaced in the first frequency domain range and the total number of the REs in the first frequency domain range.

[0158] In some embodiments of the present application, if the determined first frequency domain density is comb-x and x>1, the network side device further needs to indicate an offset parameter offset, which is used to determine the frequency domain position of the starting RE of the first resource of the first reference signal in the first frequency domain range.

[0159] The first device can determine the frequency domain position of the starting RE of the first resource in the first frequency domain range according to the first reference point and the offset. The first reference point can include at least one of the following: the starting frequency domain position of the first frequency domain range, the frequency domain position of the starting RE of the PRB in which the starting frequency domain position of the first frequency domain range is located. The first reference point can be indicated by the network side device or agreed by protocol.

[0160] In some embodiments of the present application, in the case where the first frequency domain density is determined by the non-continuous and equally spaced REs of the first resource in the first frequency domain range, the first frequency domain density is higher than a first threshold. The first threshold can be equal to the second frequency domain density. The first threshold can be indicated by the network side device or agreed by protocol.

[0161] As can be seen, since the condition that the first frequency domain density needs to satisfy is specified in the embodiments of the present application, the first device can accurately determine the first frequency domain density according to the condition, and thus the first device can accurately transmit the first reference signal at a higher first frequency domain density on the first resource, so as to reduce the influence of the frequency domain selective fading on the first reference signal transmitted on the first resource, and thus the accuracy of the error between the signals or channels on the adjacent sub-channels determined using the first reference signal can be improved.

[0162] In some embodiments of the present application, the time domain position of the time unit of the first resource satisfies at least one of the following:

[0163] The time domain position of the time unit of the first resource is the same as the time domain position of the time unit included by the entire time domain resource of the first reference signal.

[0164] The time domain position of the time unit of the first resource is the same as the time domain position of the time unit included by the partial time domain resource of the first reference signal.

[0165] In some embodiments of the present application, the time unit can include at least one of the following: an Orthogonal Frequency-Division Multiplexing (OFDM) symbol, a slot.

[0166] In some embodiments of the present application, in the case that the time domain position of the time unit of the first resource is the same as the time domain position of the time unit included in the partial time domain resource of the first reference signal, the partial time domain resource can be indicated by the network side device or be agreed by the protocol. In the case that the partial time domain resource is indicated by the network side device, the network side device can indicate the position of the partial time domain resource through a bitmap.

[0167] In some embodiments of the present application, in the case that the time unit includes a slot and the time domain position of the time unit of the first resource is the same as the time domain position of the time unit included in the partial time domain resource of the first reference signal, it can be understood that the first device can configure the first resource with a higher first frequency domain density, i.e., a transmission pattern with a higher first frequency domain density, on a partial period in the period of the first reference signal. Optionally, the partial period can be K times of a period of the first reference signal, K>1. Optionally, the partial period can be indicated according to a bitmap, wherein the bitmap has a length Y, 1 bit in the bitmap represents X consecutive periods, and the bitmap is valid for X*Y periods. The bitmap is repeated every X*Y periods. The bit being ‘1’ or ‘0’ in the bitmap indicates that the corresponding X periods contain the time unit of the first resource. Optionally, at least one of X, Y and the bitmap can be determined according to the protocol agreement or network indication. Optionally, X is equal to 1 by default.

[0168] As can be seen, since the condition required to be met by the time domain position of the first resource is specified in the embodiments of the present application, the first device can accurately determine the first resource according to the condition, and thus the first device can accurately transmit the first reference signal with a higher first frequency domain density on the first resource, so as to reduce the influence of the frequency domain selective fading on the first reference signal transmitted on the first resource, and thus the accuracy of the error between the signals or channels on the adjacent subchannels determined using the first reference signal can be improved.

[0169] In some embodiments of the present application, the RE mapping of the first reference signal satisfies at least one of the following conditions:

[0170] In the same time unit, the values of the REs of the first resource in the first frequency domain range are the same;

[0171] In the same time unit, the values of the REs of the first resource in the first frequency domain range are the same as the values of the REs of the second resource;

[0172] In the same time unit, the values of the REs of the first resource in the first frequency domain range are the same as the values of the REs of the first reference signal mapped in the first frequency domain range according to the second frequency domain density;

[0173] In the same time unit, the sequence of the first reference signal is mapped to the REs of the first resource in the first frequency range as a whole with other REs of the first reference signal. Optionally, the number of REs of the first resource on one OFDM symbol is X, and the number of REs of the second resource is Y. The length of the sequence of the first reference signal is determined according to (X+Y), and then the sequence is mapped accordingly.

[0174] In some embodiments of the present application, if the REs of the second resource are included in the first frequency range, the values of the REs of the first resource in the first frequency range are the same as the values of the REs of the second resource. Optionally, the number of REs of the second resource on one OFDM symbol is Y. The length of the sequence of the first reference signal is determined according to Y, and then the sequence is mapped to the Y REs. The values of the REs of the first resource can be determined (e.g., the same values) according to the values of part of the Y REs of the second resource.

[0175] In some embodiments of the present application, the values of the REs of the first resource in the first frequency range are the same as the values of the REs of the second resource satisfy that the values of the REs of the first resource in the first frequency range are the same as the values of the REs of the second resource closest to the first frequency range.

[0176] In some examples, if the REs of the second resource are not included in the first frequency range, the values of the REs of the first resource in the first frequency range can be the same as the values of the REs of the second resource in a frequency range higher than the first frequency range and closest to the first frequency range; or, the values of the REs of the first resource in the first frequency range can be the same as the values of the REs of the second resource in a frequency range lower than the first frequency range and closest to the first frequency range.

[0177] As can be seen, since the present application embodiments specify the conditions required to be met for the values of the REs of the first resource in the first frequency range to be the same as the values of the REs of the second resource, the first device can accurately determine the values of the REs of the first resource in the first frequency range when performing RE mapping on the first reference signal.

[0178] In summary, since the present application embodiments specify the conditions required to be met for RE mapping on the first reference signal, the first device can accurately perform RE mapping on the first reference signal according to the conditions, so that the first device can accurately transmit the first reference signal to the second device.

[0179] In some embodiments of the present application, the ports of the first reference signal include Q first ports, and Q is a positive integer greater than 1. The Q first ports include a first port associated with the first resource, and the first port associated with the first resource satisfies at least one of the following conditions:

[0180] The first ports associated with the first resource are part of the Q first ports.

[0181] The first ports associated with the first resource are part of the Q first ports.

[0182] In some embodiments of the present application, in the case that the first ports associated with the first resource satisfy the condition that the first ports associated with the first resource are part of the Q first ports, it can be understood that each first port associated with the first resource is each first port of the first reference signal.

[0183] Optionally, the first ports associated with the first resource are part of the Q first ports. That is, in the first reference signal resource, part of the ports have a higher frequency domain density (such as the first frequency domain density) for part of the resources, and the resources of the other ports are transmitted with a regular frequency domain density (such as the second frequency domain density).

[0184] In some embodiments of the present application, in the case that the first ports associated with the first resource satisfy the condition that the first ports associated with the first resource are part of the Q first ports, it can be understood that the first ports associated with the first resource are part of the first ports of the first reference signal. The part of the first ports can be the first ports indicated by the network side device. For example, the part of the first ports can be the first ports corresponding to the port index (Index) indicated by the network side device, or the first ports indicated by the Bitmap transmitted by the network side device.

[0185] As can be seen, since the present application embodiment specifies the condition to be met by the first ports associated with the first resource, the first device can accurately determine the ports associated with the first resource according to the condition, so as to accurately determine the first resource, and thus the first device can accurately transmit the first reference signal on the first resource with a higher first frequency domain density, thereby reducing the influence of frequency domain selective fading on the first reference signal transmitted on the first resource, so as to improve the accuracy of the error between the signals or channels on the adjacent subchannels determined using the first reference signal.

[0186] The following will illustrate the specific transmission pattern of the first reference signal with reference to the accompanying drawings.

[0187] In some examples, the first reference signal can be transmitted on the first resource with the first frequency domain density, and the first reference signal is transmitted on the REs in the first frequency domain range.

[0188] For example, assuming that the N subchannels include Subchannel 1 and Subchannel 2, the first reference signal is transmitted across Subchannel 1 and Subchannel 2, such as Figure 5As shown, the first frequency domain range (e.g., frequency domain range 12) of the first resource is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and the frequency domain range 12 includes the first frequency domain boundary (e.g., frequency domain boundary 13) among the T frequency domain boundaries between Subchannel 1 and Subchannel 2. Then, the first reference signal is transmitted on the first resource with a first frequency domain density (i.e., a higher frequency domain density), that is, the frequency domain density of REs in the first frequency domain range of the first resource is a higher frequency domain density. For example, the first reference signal is transmitted in the frequency domain range 12 with a higher frequency domain density, that is, the frequency domain density of REs in the first resource within the frequency domain range 12 is a higher frequency domain density. The first reference signal is transmitted on consecutive REs in the frequency domain range 12 and transmitted on the second resource with a second frequency domain density (i.e., a lower frequency domain density), that is, the frequency domain density of REs in the second frequency domain range of the second resource is a lower frequency domain density. For example, the first reference signal is transmitted in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, excluding the frequency domain range 12, with a lower frequency domain density. It should be noted that, in Figure 5 Each small square in the diagram represents a RE, and each column of REs corresponds to an OFDM symbol.

[0189] For example, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, and the first reference signal is transmitted across Subchannel 1 and Subchannel 2, such as... Figure 6As shown, if a first frequency domain range (e.g., frequency domain range 14) of the first resource is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and the frequency domain range 14 includes a first frequency domain boundary (e.g., frequency domain boundary 15) of T frequency domain boundaries between Subchannel 1 and Subchannel 2, the first reference signal is transmitted on the first resource at a first frequency domain density (i.e., a higher frequency domain density), i.e., the frequency domain density of the REs of the first resource in the first frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted at the higher frequency domain density in the frequency domain range 14, and the first reference signal is transmitted on the consecutive REs in the frequency domain range 14, i.e., the frequency domain density of the REs of the first resource in the frequency domain range 14 is the higher frequency domain density, and the REs of the first resource in the frequency domain range 14 are consecutive REs, and the second resource is transmitted at a second frequency domain density (i.e., a lower frequency domain density), i.e., the frequency domain density of the REs of the second resource in the second frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted at the lower frequency domain density in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 except the frequency domain range 14, i.e., the frequency domain density of the REs of the second resource in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 except the frequency domain range 14 is the lower frequency domain density. It should be noted that, in the case of Figure 6 Each small square represents an RE, and each column of REs corresponds to an OFDM symbol.

[0190] In some examples, the time domain positions of the time units of the first resource are the same as the time domain positions of the time units included in the overall time domain resource of the first reference signal.

[0191] For example, it is assumed that the N subchannels include Subchannel 1 and Subchannel 2, the first reference signal is transmitted across Subchannel 1 and Subchannel 2, the overall time domain resource of the first reference signal includes 4 OFDM symbols, and the time units of the first resource also include 4 OFDM symbols, as shown in FIG. 6. Figure 7As shown, each OFDM symbol corresponds to a column of REs, in each OFDM symbol, the first frequency domain range (e.g. frequency domain range 16) of the first resource is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and the frequency domain range 16 includes the first frequency domain boundary (e.g. frequency domain boundary 17) between Subchannel 1 and Subchannel 2, then the first reference signal is transmitted on the first resource with the first frequency domain density (i.e. higher frequency domain density), i.e. the frequency domain density of the REs of the first resource in the first frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted with the higher frequency domain density in the frequency domain range 16, and the first reference signal is transmitted on the consecutive REs in the frequency domain range 16, i.e. the frequency domain density of the REs of the first resource in the frequency domain range 16 is the higher frequency domain density, and the REs of the first resource in the frequency domain range 16 are consecutive REs, and the second reference signal is transmitted on the second resource with the second frequency domain density (i.e. lower frequency domain density), i.e. the frequency domain density of the REs of the second resource in the second frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted with the lower frequency domain density in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 except the frequency domain range 16, i.e. the frequency domain density of the REs of the second resource in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 except the frequency domain range 16 is the lower frequency domain density. It should be noted that, in the above description, the frequency domain density of the REs of the first resource in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 is the higher frequency domain density, and the frequency domain density of the REs of the second resource in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 except the frequency domain range 16 is the lower frequency domain density, but the frequency domain density of the REs of the first resource in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 is not necessarily the higher frequency domain density, and the frequency domain density of the REs of the second resource in the frequency domain range corresponding to Subchannel 1 and Subchannel 2 except the frequency domain range 16 is not necessarily the lower frequency domain density. Figure 7 In the figure, each small square represents an RE, and each column of REs corresponds to an OFDM symbol.

[0192] In some examples, the time domain position of the time unit of the first resource is the same as the time domain position of the time unit included in the partial time domain resource of the first reference signal.

[0193] For example, it is assumed that the N subchannels include Subchannel 1 and Subchannel 2, the first reference signal is transmitted across Subchannel 1 and Subchannel 2, the total time domain resource of the first reference signal includes 4 OFDM symbols, and the time unit of the first resource is 2 OFDM symbols, as shown in the figure. Figure 8In the case of (a) shown in FIG. 18, in the first OFDM symbol and the second OFDM symbol, the first frequency domain range (for example, the frequency domain range 18) of the first resource is located in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2, and the frequency domain range 18 includes the first frequency domain boundary (for example, the frequency domain boundary 19) of the T frequency domain boundaries between the Subchannel 1 and the Subchannel 2. Therefore, the first reference signal is transmitted on the first resource with the first frequency domain density (i.e., the higher frequency domain density), that is, the frequency domain density of the RE of the first resource in the first frequency domain range is the higher frequency domain density. For example, the first reference signal is transmitted with the higher frequency domain density in the frequency domain range 18, and the first reference signal is transmitted on the continuous RE in the frequency domain range 18, that is, the frequency domain density of the RE of the first resource in the frequency domain range 18 is the higher frequency domain density, and the RE of the first resource in the frequency domain range 18 is the continuous RE. The second resource is transmitted with the second frequency domain density (i.e., the lower frequency domain density), that is, the frequency domain density of the RE of the second resource in the second frequency domain range is the higher frequency domain density. For example, the first reference signal is transmitted with the lower frequency domain density in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2 except the frequency domain range 18, that is, the frequency domain density of the RE of the second resource in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2 except the frequency domain range 18 is the lower frequency domain density. Figure 8As shown in (b) of FIG. 6, in the first OFDM symbol and the third OFDM symbol, the first frequency domain range (for example, the frequency domain range 20) of the first resource is located in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2, and the frequency domain range 20 includes the first frequency domain boundary (for example, the frequency domain boundary 21) of the T frequency domain boundaries between the Subchannel 1 and the Subchannel 2, and the first reference signal is transmitted on the first resource with the first frequency domain density (that is, the higher frequency domain density), that is, the frequency domain density of the RE of the first resource in the first frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted with the higher frequency domain density in the frequency domain range 20, and the first reference signal is transmitted on the continuous RE in the frequency domain range 20, that is, the frequency domain density of the RE of the first resource in the frequency domain range 20 is the higher frequency domain density, and the RE of the first resource in the frequency domain range 20 is continuous, and the second reference signal is transmitted on the second resource with the second frequency domain density (that is, the lower frequency domain density), that is, the frequency domain density of the RE of the second resource in the second frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted with the lower frequency domain density in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2 except the frequency domain range 20, that is, the frequency domain density of the RE of the second resource in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2 except the frequency domain range 20 is the lower frequency domain density. Or, as shown in (b) of FIG. 7, Figure 8In the (c) in the figure, in the first OFDM symbol and the fourth OFDM symbol, the first frequency domain range (for example, the frequency domain range 22) of the first resource is located in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2, and the frequency domain range 22 includes the first frequency domain boundary (for example, the frequency domain boundary 23) of the T frequency domain boundaries between the Subchannel 1 and the Subchannel 2, and the first reference signal is transmitted on the first resource with the first frequency domain density (that is, the higher frequency domain density), that is, the frequency domain density of the RE of the first resource in the first frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted with the higher frequency domain density in the frequency domain range 22, and the first reference signal is transmitted on the continuous RE in the frequency domain range 22, that is, the frequency domain density of the RE of the first resource in the frequency domain range 22 is the higher frequency domain density, and the RE of the first resource in the frequency domain range 22 is continuous, and the second reference signal is transmitted on the second resource with the second frequency domain density (that is, the lower frequency domain density), that is, the frequency domain density of the RE of the second resource in the second frequency domain range is the higher frequency domain density, for example, the first reference signal is transmitted with the lower frequency domain density in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2 except the frequency domain range 22, that is, the frequency domain density of the RE of the second resource in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2 except the frequency domain range 22 is the lower frequency domain density. It should be noted that, in the (c) in the figure, the first resource and the second resource are located in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2, and the first resource and the second resource are located in the frequency domain range corresponding to the Subchannel 1 and the Subchannel 2. Figure 8 Each small square in the figure represents an RE, and each column of REs corresponds to an OFDM symbol.

[0194] Example two,

[0195] In some embodiments of the present application, the target reference signal includes a second reference signal, and the second reference signal is transmitted on a third resource of the second reference signal; wherein a third frequency domain range of the third resource is located in a frequency domain range corresponding to N subchannels, and the N subchannels are subchannels in the K subchannels that transmit physical signals or physical channels.

[0196] In some embodiments of the present application, the second reference signal can be a new reference signal, that is, a reference signal different from the reference signal in the related art. The second reference signal can support at least one of periodic, aperiodic, and semi-persistent configuration.

[0197] In some embodiments of the present application, the third resource can be understood as a resource used to transmit the second reference signal, and the third resource can include at least one of a time domain resource and a frequency domain resource.

[0198] In some embodiments of the present application, the third frequency domain range can be a frequency domain range of the third resource.

[0199] wherein the N sub-channels are sub-channels in the K sub-channels. Optionally, N is less than or equal to K.

[0200] Optionally, the N sub-channels are consecutive.

[0201] In some embodiments of the present application, the CC or BWP is divided into K sub-channels, the frequency domain range of the second reference signal can be all sub-channels of the K sub-channels (i.e., N = K) or part of the sub-channels (i.e., N < K); or the transmitted physical channel or physical signal is divided into K sub-channels, the frequency domain range of the second reference signal can be all sub-channels of the K sub-channels (i.e., N = K) or part of the sub-channels (i.e., N < K); or the CC or BWP is divided into K sub-channels, the physical signal or physical channel is divided into Z sub-channels in K (Z <= K), the frequency domain range of the second reference signal can be all sub-channels of the Z sub-channels (i.e., N = Z) or part of the sub-channels (i.e., N < Z), or the frequency domain range of the second reference signal has no direct relationship with the Z sub-channels divided by the physical signal or channel, and is only transmitted in the N sub-channels in K.

[0202] Optionally, the second reference signal has the characteristics of small bandwidth and high frequency domain density. Optionally, the bandwidth of the second reference signal is less than or equal to a certain threshold; the frequency domain density of the second reference signal is higher than or equal to a certain threshold.

[0203] For example, Figure 9 The frequency domain resource diagram of the second reference signal is shown. Assuming that the N sub-channels include sub-channels Subchannel 1 and Subchannel 2, as shown in Figure 9 , the second reference signal is transmitted across Subchannel 1 and Subchannel 2, the third frequency domain range (such as frequency domain range 24) of the third resource is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, the second reference signal is transmitted on the third resource, for example, the second reference signal is transmitted on the four REs in the frequency domain range 24, that is, the third resource includes four REs in the frequency domain range 24. In Figure 9 , each small square represents an RE, and each column of REs corresponds to an OFDM symbol.

[0204] For example, assuming that the N sub-channels include sub-channels Subchannel 1 and Subchannel 2, as shown in Figure 10As shown, the second reference signal is transmitted across Subchannel 1 and Subchannel 2, and the third frequency range (e.g., frequency range 25) of the third resource is located in the frequency range corresponding to Subchannel 1 and Subchannel 2, and the frequency range 25 also includes REs of resources of other reference signals. The second reference signal is transmitted on REs (e.g., three REs) in the frequency range 25 of the third resource except for the REs of the resources of the other reference signals, i.e., the third resource includes three REs in the frequency range 25. Figure 10 Each small square represents an RE, and each column of REs corresponds to an OFDM symbol.

[0205] Therefore, the second device can accurately determine the error between signals or channels on adjacent subchannels according to the second reference signal.

[0206] In some embodiments of the present application, the third frequency range satisfies at least one of the following:

[0207] contains the second frequency boundary among the T frequency boundaries between the N subchannels;

[0208] does not contain any of the T frequency boundaries between the N subchannels;

[0209] wherein T is a positive integer.

[0210] Optionally, if the third frequency range contains the second frequency boundary among the T frequency boundaries between the N subchannels, the third frequency range must span the N subchannels; if the third frequency range does not contain any of the T frequency boundaries between the N subchannels, the third frequency range is only located in part of the N subchannels (because it does not span the boundaries).

[0211] It should be noted that the description of the T frequency boundaries can refer to the specific description in Example 1 above, and the embodiments of the present application will not be repeated here.

[0212] In some embodiments of the present application, the second frequency boundary can be at least part of the T frequency boundaries. The number of the second frequency boundaries can be at least one.

[0213] In some embodiments of the present application, in a case where the third frequency domain range satisfies a condition that the second frequency domain boundary among the T frequency domain boundaries between the N sub-channels is not contained, the third frequency domain range is adjacent to the second frequency domain boundary among the T frequency domain boundaries. That is, the frequency domain range of the second reference signal is adjacent to the adjacent sub-channel boundary, but does not contain the adjacent sub-channel frequency domain boundary. Then, the scenario of jointly channel estimation of the second reference signal and other reference signals (such as the third reference signal) is more applicable.

[0214] In some embodiments of the present application, in a case where the third frequency domain range satisfies a condition that the second frequency domain boundary among the T frequency domain boundaries between the N sub-channels is not contained, the third frequency domain range is adjacent to the second frequency domain boundary among the T frequency domain boundaries. That is, the frequency domain range of the second reference signal is adjacent to the adjacent sub-channel boundary, but does not contain the adjacent sub-channel frequency domain boundary. Then, the scenario of jointly channel estimation of the second reference signal and other reference signals (such as the third reference signal) is more applicable.

[0215] It should be noted that the above-mentioned "adjacent" can be understood as: the distance between the two is less than or equal to a preset distance.

[0216] In some embodiments of the present application, in a case where the third frequency domain range satisfies a condition that the second frequency domain boundary among the T frequency domain boundaries between the N sub-channels is not contained, the third frequency domain range is adjacent to the second frequency domain boundary among the T frequency domain boundaries. That is, the frequency domain range of the second reference signal is adjacent to the adjacent sub-channel boundary, but does not contain the adjacent sub-channel frequency domain boundary. Then, the scenario of jointly channel estimation of the second reference signal and other reference signals (such as the third reference signal) is more applicable.

[0217] Therefore, the first device can accurately determine the third frequency domain range according to the condition, and accurately determine the third resource, so that the first device can accurately transmit the second reference signal on the third resource.

[0218] In some embodiments of the present application, the third frequency domain range satisfies at least one of the following:

[0219] The third frequency domain range is determined by the second frequency domain offset and the third bandwidth;

[0220] In a case where the third frequency domain range contains the second frequency domain boundary, the third frequency domain range is determined by the second frequency domain boundary and the third bandwidth;

[0221] The third frequency domain range is determined by the starting frequency domain position of the third frequency domain range and the third bandwidth;

[0222] The bandwidth of the third frequency domain range does not exceed the fourth bandwidth;

[0223] The number of the third frequency domain range is determined by the number T of the T frequency domain boundaries.

[0224] In the embodiments of the present application, the second frequency domain offset is the frequency domain offset of the starting frequency domain position of the third frequency domain range and the second frequency domain boundary.

[0225] Optionally, the starting frequency domain position of the third frequency domain range comprises a RB offset and a RE offset, wherein the RB offset is used to determine an RB where the starting frequency domain position is located, and the RE offset is used to determine which RE of the RB where the starting frequency domain position is located.

[0226] In some embodiments of the present application, the second frequency domain offset, the third bandwidth, and the starting frequency domain position of the third frequency domain range are determined by at least one of the following: network side device indication, second device indication, protocol agreement, and first device determination.

[0227] If the second frequency domain offset, the third bandwidth, and the starting frequency domain position of the third frequency domain range are determined by the first device, the corresponding configuration is indicated by the first device to the network side device or the second device.

[0228] It should be noted that the description of the determination method of the third frequency domain range can refer to the specific description of the determination method of the first frequency domain range in Example One, and the embodiments of the present application will not be repeated here.

[0229] In the embodiments of the present application, the fourth bandwidth is equal to the bandwidth corresponding to M physical resource blocks (PRBs), and M is a positive integer.

[0230] In some embodiments of the present application, the unit of the fourth bandwidth can be RE.

[0231] In some embodiments of the present application, M can be specifically 1. Of course, M can also be other positive integers, which are not limited in the embodiments of the present application.

[0232] It should be noted that the description of the number of third frequency domain ranges can refer to the specific description of the number of first frequency domain ranges in Example One, and the embodiments of the present application will not be repeated here.

[0233] As can be seen, since the embodiments of the present application specify the conditions required to be met by the third frequency domain range, the first device can accurately determine the third frequency domain range according to the conditions, so as to accurately determine the third resource, and thus the first device can accurately send the second reference signal on the third resource.

[0234] In some embodiments of the present application, the second reference signal is sent on the third resource with a third frequency domain density, and the third frequency domain density satisfies at least one of the following:

[0235] The third frequency domain density is determined by the REs of the third resource that are continuous in the third frequency domain range;

[0236] The third frequency domain density is determined by the REs of the third resource that are non-continuous and equally spaced in the third frequency domain range.

[0237] It should be noted that the determination method of the third frequency domain density can refer to the specific description of the determination method of the first frequency domain density in the above example one, and the embodiments of the present application will not be repeated here.

[0238] Optionally, the third frequency domain density is higher than a threshold.

[0239] In some embodiments of the present application, the third frequency domain density can be the same as the first frequency domain density, or the third frequency domain density can be higher than the first frequency domain density.

[0240] As can be seen, since the condition to be met by the third frequency domain density is specified in the embodiments of the present application, the first device can accurately determine the third frequency domain density according to the condition, and thus the first device can accurately transmit the second reference signal with a higher third frequency domain density on the third resource, thereby reducing the influence of frequency domain selective fading on the second reference signal transmitted on the third resource, and thus improving the accuracy of the error between the signals or channels on the adjacent subchannels determined using the second reference signal.

[0241] In some embodiments of the present application, the third resource includes L OFDM symbols, L is a positive integer greater than 1; the L OFDM symbols satisfy at least one of the following:

[0242] The frequency domain positions of the REs corresponding to each OFDM symbol are the same;

[0243] The L OFDM symbols are continuous symbols or discontinuous symbols.

[0244] In some embodiments of the present application, the RE corresponding to the OFDM symbol can be understood as the RE corresponding to the OFDM symbol in the third resource.

[0245] In some embodiments of the present application, in the case where the L OFDM symbols satisfy that the L OFDM symbols are continuous symbols, the starting time domain position of the L OFDM symbols and the number L of the L OFDM symbols can be indicated by the network side device or agreed by the protocol.

[0246] In some embodiments of the present application, in the case where the L OFDM symbols satisfy that the L OFDM symbols are discontinuous symbols, the time domain position of each OFDM symbol, the number L of the L OFDM symbols, and the interval between adjacent OFDM symbols can be indicated by the network side device or agreed by the protocol.

[0247] For example, the protocol can agree on the time domain position of each OFDM symbol, such as {4, 8} representing the symbol index of each OFDM symbol.

[0248] In some embodiments of the present application, the L OFDM symbols are equally spaced in the case that the L OFDM symbols satisfy the condition that the L OFDM symbols are discontinuous symbols.

[0249] Therefore, the first device can accurately determine the L OFDM symbols according to the condition, so as to determine the time domain resources included in the third resource, and the first device can accurately transmit the second reference signal on the time domain resources of the third resource.

[0250] In some embodiments of the present application, the ports of the second reference signal include R second ports, R is a positive integer, and the R second ports satisfy at least one of the following conditions:

[0251] In the case that R is greater than 1, the R second ports can be distinguished by a first manner.

[0252] In the case that the third frequency domain range includes the second frequency domain boundary, and the third resource is divided into a fourth resource and a fifth resource by the second frequency domain boundary, the fourth resource corresponds to a part of the R second ports, and the fifth resource corresponds to another part of the R second ports.

[0253] In the embodiments of the present application, the first manner includes at least one of the following: a frequency division multiplexing manner, a time division multiplexing manner, and a code division multiplexing manner.

[0254] In some embodiments of the present application, in the case that the R second ports can be distinguished by a code division multiplexing manner, and the R second ports can form a code division multiplexing group (CDM Group), the frequency domain range (for example, the continuous 2 REs occupied by FD-OCC) occupied by the CDM Group does not include the frequency domain boundary among the T frequency domain boundaries between the N sub-channels.

[0255] In the embodiments of the present application, the second frequency domain boundary is a frequency domain boundary among the T frequency domain boundaries between the N sub-channels.

[0256] In some embodiments of the present application, the part of the second ports can be understood as at least one complete group of second ports, and the other part of the second ports can be understood as at least one complete group of second ports. That is, in the case that the R second ports satisfy the condition that the third frequency domain range includes the second frequency domain boundary, and the third resource is divided into the fourth resource and the fifth resource by the second frequency domain boundary, each part of the resource corresponds to at least one complete group of second ports, so as to be applicable to the scene of using the second reference signal to independently perform joint channel estimation. Optionally, the upper and lower parts of the T frequency domain boundaries each include a complete CDM group.

[0257] Therefore, the first device can accurately determine the R second ports of the second reference signal according to the condition, accurately determine the third resource of the second reference signal, and accurately send the second reference signal on the third resource.

[0258] In some embodiments of the present application, the ports of the second reference signal include R second ports, and R is a positive integer; and a third port of the R second ports has an association relationship with a fourth port of the third reference signal.

[0259] In some embodiments of the present application, the third reference signal can include at least one of the following: NZP-CSI-RS, ZP-CSI-RS, CSI-IM, DMRS, PRS, TRS, and SRS. Of course, the third reference signal can also include other reference signals, which are not limited in the embodiments of the present application.

[0260] In the embodiments of the present application, the third port and the fourth port can be used to jointly determine the error between the signals or channels sent on adjacent subchannels.

[0261] In some embodiments of the present application, the association relationship between the third port and the fourth port can be understood as that the fourth port can refer to the channel information (for example, phase offset) obtained by performing channel estimation on the resource of the third port, or the fourth port can perform joint channel estimation with the third port.

[0262] In some examples, the channel information obtained by the fourth port by performing channel estimation on the resource of the third port can also be referred to as a "Quasi-Co Location (QCL) relationship". The QCL relationship can be a new QCL relationship defined to represent the reference relationship of the phase offset in the channel.

[0263] In some examples, the fourth port can perform joint channel estimation with the third port, which can be understood as that the fourth port and the third port are the same port.

[0264] In some embodiments of the present application, the third port and the fourth port can be indicated by a network side device or agreed by a protocol.

[0265] In some embodiments of the present application, the number of the third ports can be at least one, and the number of the fourth ports can be at least one. For example, the number of the third ports can be one, and the number of the fourth ports can be one, in which case the third ports and the fourth ports have a one-to-one association relationship; or the number of the third ports can be one, and the number of the fourth ports can be at least two, in which case the third ports and the fourth ports have a one-to-many association relationship.

[0266] As can be seen, since the embodiments of the present application stipulate that the third ports and the fourth ports have an association relationship, the first device can directly use the third ports and the fourth ports for joint channel estimation, so that accurate channel information can be obtained.

[0267] Optionally, the third reference signal can be the same as the first reference signal.

[0268] Optionally, the third reference signal can be a physical signal in step 101.

[0269] In some embodiments of the present application, the first device does not expect to map the second reference signal and the third reference signal on the same RE.

[0270] In some embodiments of the present application, if the third resource of the second reference signal and the sixth resource of the third reference signal overlap on the same RE, the first device does not expect to send the third reference signal, and the second device does not expect to receive the third reference signal.

[0271] In some embodiments of the present application, if the third resource of the second reference signal and the sixth resource of the third reference signal overlap on the same RE, the first device does not expect to send the second reference signal, and the second device does not expect to receive the second reference signal.

[0272] As can be seen, since the first device does not expect to map the second reference signal and the third reference signal on the same RE, the influence of the third reference signal on the second reference signal can be avoided, so that the second reference signal can be used to accurately determine the error between the signals or channels on the adjacent sub-channels.

[0273] In some embodiments of the present application, for each second port of the R second ports and / or the characteristics of the resource of each second port, the characteristics of the second reference signal (i.e. the characteristics of the third frequency domain range, the third frequency domain density, the third resource, etc. of the second reference signal) can be the same.

[0274] In some embodiments of the present application, the RE mapping of the second reference signal satisfies at least one of the following:

[0275] The value of the RE of the third resource is the same as the value of the specific RE of the sixth resource of the third reference signal;

[0276] RE mapping is performed independently on the second reference signal.

[0277] In some embodiments of this application, when RE mapping of the second reference signal satisfies the condition that RE mapping of the second reference signal is performed independently, the RE values ​​at the same frequency domain position of the third resource of the second reference signal are the same.

[0278] In some embodiments of this application, the specific RE described above satisfies any one of the following:

[0279] If the third frequency domain range only includes the first RE of the sixth resource, then the specific RE is the first RE;

[0280] If the third frequency domain includes at least two second REs of the sixth resource, then the specific RE is the second RE with the lowest frequency domain position among the at least two second REs;

[0281] If the RE of the sixth resource is not included in the third frequency domain range, then the specific RE is the RE of the third resource that is closest to the third frequency domain range.

[0282] In some embodiments of this application, the number of the first REs can be one.

[0283] Thus, since the embodiments of this application specify the conditions that a particular RE must meet, the first device can accurately determine the value of a particular RE of the sixth resource when performing RE mapping on the second reference signal, so as to accurately determine the value of the RE of the third resource.

[0284] In summary, since the embodiments of this application specify the conditions that need to be met for RE mapping of the second reference signal, the first device can accurately perform RE mapping of the second reference signal according to the conditions, so that the first device can accurately send the second reference signal to the second device.

[0285] The following will illustrate the specific transmission pattern of the second reference signal with reference to the accompanying drawings.

[0286] In some examples, the second reference signal described above can be transmitted on a third resource, and the second reference signal can be transmitted on consecutive REs of the third resource.

[0287] For example, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, such as Figure 11A As shown, the second reference signal can be transmitted on two consecutive REs of the third resource, or, as... Figure 11B As shown, the second reference signal can be transmitted on four consecutive REs of the third resource, or, as...Figure 11C As shown, the second reference signal can be transmitted on the six consecutive REs of the third resource. It is to be noted that in Figures 11A-11C each small square represents one RE, and each column of REs corresponds to one OFDM symbol.

[0288] In some examples, the second reference signal can be transmitted on the third resource, and the second reference signal is transmitted on the equally-spaced REs of the third resource.

[0289] For example, assume that the N sub-channels include Subchannel 1 and Subchannel 2, as shown in Figure 12A the second reference signal can be transmitted on the third resource with the third frequency domain density comb-2, the third resource including 2 REs, or as shown in Figure 12B the second reference signal can be transmitted on the third resource with the third frequency domain density comb-2, the third resource including 3 REs, or as shown in Figure 12C the second reference signal can be transmitted on the third resource with the third frequency domain density comb-2, the third resource including 4 REs. It is to be noted that in Figures 12A-12C each small square represents one RE, and each column of REs corresponds to one OFDM symbol.

[0290] In some examples, the third resource can include L OFDM symbols, the L OFDM symbols satisfying that the frequency domain positions of the REs corresponding to each OFDM symbol are the same, and the L OFDM symbols are consecutive symbols.

[0291] For example, assume that the N sub-channels include Subchannel 1 and Subchannel 2, as shown in Figure 13A the second reference signal can be transmitted on the third resource, the third resource including 2 consecutive OFDM symbols, the frequency domain positions of the REs corresponding to each OFDM symbol being the same, or as shown in Figure 13B the second reference signal can be transmitted on the third resource, the third resource including 4 consecutive OFDM symbols, the frequency domain positions of the REs corresponding to each OFDM symbol being the same. It is to be noted that in Figure 13A and Figure 13B each small square represents one RE, and each column of REs corresponds to one OFDM symbol.

[0292] In some examples, the third resource can include L OFDM symbols, the L OFDM symbols satisfying that the frequency domain positions of the REs corresponding to each OFDM symbol are the same, and the L OFDM symbols are non-consecutive symbols.

[0293] For example, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, such as Figure 14A As shown, the second reference signal can be transmitted on a third resource, which includes two OFDM symbols that are equally spaced (e.g., spaced by one OFDM symbol), and the frequency domain positions of the REs corresponding to each OFDM symbol are the same, or, as... Figure 14B As shown, the second reference signal can be transmitted on a third resource, which comprises four equally spaced OFDM symbols (e.g., spaced by one OFDM symbol), with each OFDM symbol corresponding to the same frequency domain position of the RE, or, as... Figure 14C As shown, the second reference signal can be transmitted on a third resource, which includes two OFDM symbols that are equally spaced (e.g., spaced three OFDM symbols apart), with each OFDM symbol corresponding to the same frequency domain position of the RE, or, as... Figure 14D As shown, the second reference signal can be transmitted on a third resource, which includes four equally spaced OFDM symbols (e.g., spaced three OFDM symbols apart), with each OFDM symbol corresponding to the same frequency domain RE position. It should be noted that... Figures 14A-14D Each small square in the diagram represents a RE, and each column of REs corresponds to an OFDM symbol.

[0294] In some examples, the ports of the second reference signal include R second ports. When R is greater than 1, the R second ports can be distinguished by a first method, which includes at least one of frequency division multiplexing and time division multiplexing.

[0295] For example, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, such as Figure 15A As shown, the second reference signal has four ports, which can be distinguished by time-division multiplexing. For example, the RE of the resource at second port #1 can be located in the first OFDM symbol, the RE of the resource at second port #2 can be located in the second OFDM symbol, the RE of the resource at second port #3 can be located in the third OFDM symbol, and the RE of the resource at second port #4 can be located in the fourth OFDM symbol. Or, as... Figure 15B As shown, the second reference signal includes two second ports, which can be distinguished by frequency division multiplexing. For example, the REs of resources of second port #1 and second port #2 can both be located in the first OFDM symbol and the second OFDM symbol, and in the first OFDM symbol, the frequency domain positions of the REs of resources of second port #1 and second port #2 are different. It should be noted that in Figure 15A and Figure 15BEach small square represents one RE, and each column of REs corresponds to one OFDM symbol.

[0296] In some examples, the ports of the second reference signal include R second ports, and in a case that R is greater than 1, the R second ports can be distinguished by a first manner, which includes a code division multiplexing manner.

[0297] For example, assume that the N sub-channels include Subchannel 1 and Subchannel 2, as shown in Figure 16A The R second ports are 4 second ports, and the REs of the 4 second ports form a CDM group and a repeated CDM group, where the CDM group and the repeated CDM group respectively correspond to one 2*2 RE combination, and each 2*2 RE combination includes the REs of the 4 second ports, and the 4 second ports can be distinguished by TD-OCC2 and FD-OCC2. For example, the second port #1 corresponds to FD-OCC{1, 1} and TD-OCC{1, 1}, that is, when performing RE mapping on the REs of the second port #1, {1, 1} and {1, 1} are multiplied; the second port #2 corresponds to FD-OCC{1, -1} and TD-OCC{1, 1}, that is, when performing RE mapping on the REs of the second port #2, {1, -1} and {1, 1} are multiplied; the second port #3 corresponds to FD-OCC{1, 1} and TD-OCC{1, -1}, that is, when performing RE mapping on the REs of the second port #3, {1, 1} and {1, -1} are multiplied; and the second port #4 corresponds to FD-OCC{1, -1} and TD-OCC{1, 1}, that is, when performing RE mapping on the REs of the second port #4, {1, -1} and {1, 1} are multiplied. For any one of the 4 second ports, the REs of one second port can be divided into two parts by the frequency domain boundary between Subchannel 1 and Subchannel 2, and each part has a corresponding second port, otherwise the error of the signal or channel between adjacent sub-channels, such as phase offset, cannot be estimated by the second port. Figure 16A In the repeated CDM group, the REs of each second port are present in each part. Also, as shown in Figure 16A In each 2*2 RE combination, the frequency domain boundary between Subchannel 1 and Subchannel 2 is not included. It should be noted that in Figure 16A Each small square represents one RE, and each column of REs corresponds to one OFDM symbol.

[0298] For another example, assume that the N sub-channels include Subchannel 1 and Subchannel 2, as shown inFigure 16B As shown, R second ports constitute two second ports. The REs of the resources of these two second ports form a CDM group and a repeated CDM group. Each CDM group and repeated CDM group corresponds to a 2*2 RE combination. Each 2*2 RE combination contains the REs of the two second ports. The two second ports can be distinguished by FD-OCC2. For example, second port #1 corresponds to FD-OCC2{1, 1}, meaning that when mapping the RE of second port #1, it is multiplied by {1, 1}; second port #2 corresponds to FD-OCC2{1, -1}, meaning that when mapping the RE of second port #2, it is multiplied by {1, -1}. It should be noted that in... Figure 16B Each small square in the diagram represents a RE, and each column of REs corresponds to an OFDM symbol.

[0299] In some examples, the first device does not expect to map the second reference signal and the third reference signal onto the same RE, which can satisfy at least one of the following: the first device does not expect the RE of the sixth resource of the third reference signal to be included in the third frequency domain; when the first device performs RE mapping, if the RE of the sixth resource of the third reference signal is included in the third frequency domain, the RE of the sixth resource is skipped during mapping, and the second reference signal is continued to be RE mapped according to the third frequency domain density, starting from the RE of the sixth resource.

[0300] For example, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, such as Figure 17A As shown, the third frequency domain range (e.g., frequency domain range 26) of the third resource of the second reference signal is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and this frequency domain range 26 includes the second frequency domain boundary (e.g., frequency domain boundary 27) among the T frequency domain boundaries between Subchannel 1 and Subchannel 2. This frequency domain range 26 includes 4 consecutive REs, and this frequency domain range 26 includes 1 RE of the sixth resource of the third reference signal. Therefore, when performing RE mapping on the second reference signal, the first device can skip 1 RE of the sixth resource and actually only map 3 REs of the third resource. It should be noted that in Figure 17A Each small square in the diagram represents a RE, and each column of REs corresponds to an OFDM symbol.

[0301] To illustrate further, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, such as... Figure 17BAs shown, the third frequency domain range (e.g., frequency domain range 28) of the third resource of the second reference signal is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and this frequency domain range 28 includes the second frequency domain boundary (e.g., frequency domain boundary 29) among the T frequency domain boundaries between Subchannel 1 and Subchannel 2. This frequency domain range 28 includes 7 consecutive REs, and this frequency domain range 28 includes 1 RE of the sixth resource of the third reference signal. Therefore, when performing RE mapping, the first device can skip 1 RE of the sixth resource and actually only map 3 REs of the third resource. It should be noted that in Figure 17B Each small square in the diagram represents a RE, and each column of REs corresponds to an OFDM symbol.

[0302] To illustrate further, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, such as... Figure 17C As shown, the third frequency domain range (e.g., frequency domain range 30) of the third resource of the second reference signal is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and this frequency domain range 30 includes the second frequency domain boundary (e.g., frequency domain boundary 31) among the T frequency domain boundaries between Subchannel 1 and Subchannel 2. This frequency domain range 30 includes 6 consecutive REs, and this frequency domain range 30 includes 1 RE of the sixth resource of the third reference signal. Therefore, when performing RE mapping, the first device can skip 1 RE of the sixth resource and continue to perform RE mapping on the second reference signal according to the third frequency domain density, starting from 1 RE of the sixth resource. It should be noted that in Figure 17C Each small square in the diagram represents a RE, and each column of REs corresponds to an OFDM symbol.

[0303] In some examples, when performing RE mapping on the second reference signal, if the third frequency domain range includes the RE of the sixth resource of the third reference signal, and the RE of the sixth resource does not overlap with the RE of the third resource of the second reference signal, then the first device may perform RE mapping in accordance with the manner described in the related art.

[0304] For example, suppose there are N sub-channels, including Subchannel 1 and Subchannel 2, such as Figure 18As shown in FIG. 13, the third frequency domain range (e.g., frequency domain range 32) of the third resource of the second reference signal is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and the frequency domain range 32 includes the second frequency domain boundary (e.g., frequency domain boundary 33) of the T frequency domain boundaries between Subchannel 1 and Subchannel 2, and the frequency domain range 32 includes 5 consecutive REs. Since the REs of the third resource of the second reference signal do not overlap with the REs of the sixth resource of the third reference signal, the first device does not have to skip the REs of the sixth resource, and does not have to continue RE mapping of the second reference signal with the third frequency domain density starting from the REs of the sixth resource. It should be noted that in Figure 18 each small square represents an RE, and each column of REs corresponds to an OFDM symbol.

[0305] In some examples, the third frequency domain range of the third resource of the second reference signal can not include any of the T frequency domain boundaries between the N subchannels.

[0306] For example, assume that the N subchannels include Subchannel 1 and Subchannel 2, as shown in FIG. 14, and the third resource of the second reference signal is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2. Figure 19A and 19B As shown in FIG. 15, the third frequency domain range (e.g., frequency domain range 34) of the third resource of the second reference signal is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2, and the frequency domain range 34 does not include the second frequency domain boundary (e.g., frequency domain boundary 35) of the T frequency domain boundaries between Subchannel 1 and Subchannel 2, i.e., the frequency domain range 34 is located above the frequency domain boundary 35, and the new frequency domain range formed by the frequency domain range of the third resource of the second reference signal and the frequency domain range of the sixth resource of the third reference signal can include the frequency domain boundary 35. Thus, the first device can perform joint channel estimation according to the second reference signal and the third reference signal. It should be noted that in Figure 19A and Figure 19B each small square represents an RE, and each column of REs corresponds to an OFDM symbol.

[0307] In some examples, the ports of the second reference signal include R second ports, and a third port of the R second ports has an association relationship with the fourth port of the third reference signal.

[0308] For example, assume that the N subchannels include Subchannel 1 and Subchannel 2, as shown in FIG. 16, and the third resource of the second reference signal is located in the frequency domain range corresponding to Subchannel 1 and Subchannel 2. Figure 20AAs shown, the second reference signal can include a plurality of second ports, the plurality of second ports can be distinguished by code division multiplexing, REs of resources of the plurality of second ports are located above a second frequency domain boundary (for example, frequency domain boundary 36) of T frequency domain boundaries between Subchannel 1 and Subchannel 2, REs of resources of the fourth port of the third reference signal can be located below the frequency domain boundary 36, so that the number of third ports (which are at least part of the plurality of second ports) in the plurality of second ports can be the same as the number of fourth ports (which are at least part of the ports of the third reference signal) of the third reference signal, each third port has an association relationship with each fourth port, and joint channel estimation can be performed. Alternatively, as shown, the second reference signal can include one second port, which is located above the frequency domain boundary 36, and REs of resources of the fourth port of the third reference signal can be located below the frequency domain boundary 36, so that the number of third ports (which are the one second port) in the one second port can be less than the number of fourth ports (which are at least part of the ports of the third reference signal) of the third reference signal, and the third port can have an association relationship with each fourth port and joint channel estimation can be performed. Figure 20B

[0309] The embodiments of the present application provide a signal transmission method, a first device can send a physical signal or a physical channel to a second device in the frequency domain range of K subchannels, and send a target reference signal to the second device for determining the error between the signals or channels on adjacent subchannels in the subchannel in which the physical signal or the physical channel is sent; wherein K is a positive integer greater than 1. Since the first device sends the physical signal or the physical channel to the second device on the K subchannels, the first device can also send the target reference signal to the second device for determining the error between the signals or channels on adjacent subchannels in the subchannel in which the physical signal or the physical channel is sent, so that the second device can determine the error between the signals or channels on adjacent subchannels based on the target reference signal and compensate for the error, thus reducing the error between the signals or channels on different subchannels, thereby improving the quality of the above-mentioned physical signal or physical channel, and thus improving the communication quality.

[0310] In some embodiments of the present application, the above-mentioned target reference signal is associated with at least one spatial domain filtering matrix. In some examples, the above-mentioned step 102 can be implemented by the following step 102a.

[0311] Step 102a, the first device sends the target reference signal to the second device according to a first spatial domain filtering matrix in the at least one spatial domain filtering matrix.

[0312] ​In some embodiments of the present application, the first spatial domain filter matrix is a spatial domain filter matrix indicated by the network-side device from the at least one spatial domain filter matrix.

[0313] In the embodiments of the present application, the spatial domain filter matrix is used to filter out multipath noise, so that the signals or channels on adjacent sub-channels can be made more flat, and thus more suitable for determining the error between the signals or channels on adjacent sub-channels.

[0314] In some embodiments of the present application, when the first device is to send a target reference signal to the second device, the network-side device can send indication information to the first device and / or the second device, the indication information being used to indicate the first spatial domain filter matrix. Thus, the first device can send the target reference signal to the second device according to the first spatial domain filter matrix, and / or the second device can receive the target reference signal from the first device according to the first spatial domain filter matrix.

[0315] Correspondingly, the second device can receive the target reference signal sent by the first device according to the first spatial domain filter matrix.

[0316] In some embodiments of the present application, the first spatial domain filter matrix is a spatial domain filter matrix indicated by the network-side device from the at least one spatial domain filter matrix.

[0317] In some embodiments of the present application, when the first device is to send a target reference signal to the second device, the network-side device can send indication information to the second device, the indication information being used to indicate the first spatial domain filter matrix. The second device can also receive the target reference signal from the first device according to the first spatial domain filter matrix.

[0318] As can be seen, since the first device can send the target reference signal to the second device according to the first spatial domain filter matrix, the multipath noise existing in the target reference signal can be reduced, and thus the signal quality of the target reference signal can be improved, so that the accuracy of the error between the signals or channels on adjacent sub-channels determined using the target reference signal can be improved.

[0319] The signal transmission method provided in the embodiments of the present application can be executed by a signal transmission device. In the embodiments of the present application, the signal transmission device is taken as an example to illustrate the signal transmission device provided in the embodiments of the present application.

[0320] The signal transmission device provided in the embodiments of the present application can be a first device or a component in the first device, for example, a chip. The first device can be a terminal, a network-side device, a server, or the like. Exemplarily, the terminal can include but is not limited to the types of the terminal 11 listed above, the network-side device can include but is not limited to the types of the network-side device 12 listed above, and the embodiments of the present application are not limited specifically.

[0321] The signal transmission apparatus includes a receiving module, a sending module and a processing module. The receiving module, the sending module and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor. The processor can include a general-purpose processor, a special-purpose processor, etc., such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving module and the sending module can be implemented by a communication interface, which can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, etc.

[0322] Specifically, referring to Figure 21 When the signal transmission apparatus 30 is a first device or a component in the first device, the signal transmission apparatus 30 can include a sending module 31 configured to send a physical signal or a physical channel to a second device in a frequency domain range of K sub-channels, K being a positive integer greater than 1, and send a target reference signal to the second device, the target reference signal being used to determine an error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signal or the physical channel is sent.

[0323] In a possible implementation, the target reference signal includes a first reference signal, and the first reference signal is sent across N sub-channels, the N sub-channels being the sub-channels in which the physical signal or the physical channel is sent in the K sub-channels, N being a positive integer greater than 1. The first reference signal is sent at a first frequency domain density on a first resource of the first reference signal and at a second frequency domain density on a second resource of the first reference signal other than the first resource, the first frequency domain density being greater than the second frequency domain density. A first frequency domain range of the first resource is located in a frequency domain range corresponding to the N sub-channels, and the first frequency domain range includes a first frequency domain boundary of T frequency domain boundaries between the N sub-channels, T being a positive integer.

[0324] In a possible implementation, the first frequency domain range satisfies at least one of the following: the first frequency domain range is determined by a first frequency domain offset and a first bandwidth; the first frequency domain range is determined by a first frequency domain boundary and the first bandwidth; the first frequency domain range is determined by a starting frequency domain position of the first frequency domain range and the first bandwidth; the first frequency domain range has a second bandwidth; a number of the first frequency domain ranges is determined by a number T of the T frequency domain boundaries; wherein the first frequency domain offset is a frequency domain offset of the starting frequency domain position of the first frequency domain range and the first frequency domain boundary; and the second bandwidth is equal to a frequency domain interval between two resource elements, REs, adjacent to each other of the second resource in the second frequency domain range.

[0325] In a possible implementation, the first frequency domain density satisfies at least one of the following: the first frequency domain density is determined by REs of the first resource that are continuous in the first frequency domain range; and the first frequency domain density is determined by REs of the first resource that are non-continuous and equally spaced in the first frequency domain range.

[0326] In a possible implementation, the time domain position of the first resource satisfies at least one of the following: a time domain position of a time unit of the first resource is the same as a time domain position of a time unit included by all time domain resources of the first reference signal; and a time domain position of a time unit of the first resource is the same as a time domain position of a time unit included by part of the time domain resources of the first reference signal.

[0327] In a possible implementation, the RE mapping of the first reference signal satisfies at least one of the following: in a same time unit, values of REs of the first resource in the first frequency domain range are the same; in the same time unit, values of the REs of the first resource in the first frequency domain range are the same as values of REs of the second resource; in the same time unit, values of the REs of the first resource in the first frequency domain range are the same as values of REs of the first reference signal that are mapped according to the second frequency domain density in the first frequency domain range; in the same time unit, a sequence of the first reference signal is mapped to corresponding REs as a whole with the REs of the first resource in the first frequency domain range and other REs of the first reference signal.

[0328] In a possible implementation, in the same time unit, the values of the REs of the first resource in the first frequency domain range are the same as values of REs of the second resource that are closest to the first frequency domain range.

[0329] In a possible implementation, the ports of the first reference signal include Q first ports, Q is a positive integer greater than 1, and the first resource-associated first ports include at least one of the following: the first resource-associated first ports are the Q first ports; or the first resource-associated first ports are part of the Q first ports.

[0330] In a possible implementation, the target reference signal includes a second reference signal, and the second reference signal is transmitted on third resources of the second reference signal; and the third frequency domain range of the third resources is located in a frequency domain range corresponding to N sub-channels, the N sub-channels are sub-channels in which physical signals or physical channels are transmitted in the K sub-channels, and N is a positive integer greater than 1.

[0331] In a possible implementation, the third frequency domain range satisfies at least one of the following: the third frequency domain range includes a second frequency domain boundary of T frequency domain boundaries between the N sub-channels; or the third frequency domain range does not include any of the T frequency domain boundaries between the N sub-channels, and T is a positive integer.

[0332] In a possible implementation, the third frequency domain range satisfies at least one of the following: the third frequency domain range is determined by a second frequency domain offset and a third bandwidth; in a case where the third frequency domain range includes the second frequency domain boundary, the third frequency domain range is determined by the second frequency domain boundary and the third bandwidth; the third frequency domain range is determined by a starting frequency domain position of the third frequency domain range and the third bandwidth; a bandwidth of the third frequency domain range does not exceed a fourth bandwidth; a number of the third frequency domain ranges is determined by a number T of the T frequency domain boundaries between the N sub-channels; the second frequency domain offset is a frequency domain offset between a starting frequency domain position of the third frequency domain range and the second frequency domain boundary; and the fourth bandwidth is equal to a bandwidth corresponding to M PRBs, and M is a positive integer.

[0333] In a possible implementation, the second reference signal is transmitted on the third resources with a third frequency domain density, and the third frequency domain density satisfies at least one of the following: the third frequency domain density is determined by REs of the third resources that are continuous in the third frequency domain range; or the third frequency domain density is determined by REs of the third resources that are non-continuous and equally spaced in the third frequency domain range.

[0334] In a possible implementation, the third resources include L OFDM symbols, L is a positive integer greater than 1, and the L OFDM symbols satisfy at least one of the following: frequency domain positions of REs corresponding to each OFDM symbol are the same; or the L OFDM symbols are continuous symbols or non-continuous symbols.

[0335] In a possible implementation, the ports of the second reference signal comprise R second ports, R being a positive integer, and the R second ports satisfy at least one of the following conditions: in a case where R is greater than 1, the R second ports can be distinguished by a first manner; in a case where the third frequency domain range comprises a second frequency domain boundary, and the third resource is divided into a fourth resource and a fifth resource by the second frequency domain boundary, the fourth resource corresponds to a part of the R second ports, and the fifth resource corresponds to another part of the R second ports; wherein the first manner comprises at least one of the following: a frequency division multiplexing manner, a time division multiplexing manner, and a code division multiplexing manner; and wherein the second frequency domain boundary is a frequency domain boundary of T frequency domain boundaries between N sub-channels.

[0336] In a possible implementation, the ports of the second reference signal comprise R second ports, R being a positive integer, and a third port of the R second ports has an association relationship with a fourth port of the third reference signal; the third port and the fourth port can be used to jointly determine an error between signals or channels transmitted on adjacent sub-channels.

[0337] In a possible implementation, the signal transmission apparatus 30 does not expect to map the second reference signal and the third reference signal on the same RE.

[0338] In a possible implementation, the RE mapping of the second reference signal satisfies at least one of the following conditions: a value of an RE of the third resource is the same as a value of a specific RE of the sixth resource of the third reference signal; and the RE mapping of the second reference signal is performed independently.

[0339] In a possible implementation, the specific RE satisfies any one of the following conditions: if the third frequency domain range only comprises a first RE of the sixth resource, the specific RE is the first RE; if the third frequency domain range comprises at least two second REs of the sixth resource, the specific RE is a second RE with a lowest frequency domain position among the at least two second REs; and if the third frequency domain range does not comprise an RE of the sixth resource, the specific RE is an RE of the third resource closest to the third frequency domain range.

[0340] In a possible implementation, the signal transmission apparatus 30 provided by the embodiment of the present application can further comprise a receiving module configured to receive first configuration information from a second device; or the sending module 31 is further configured to send the first configuration information to the second device; wherein the first configuration information is used to configure K sub-channels or N sub-channels, the N sub-channels being sub-channels of the K sub-channels on which physical signals or physical channels are transmitted, and N being a positive integer greater than 1.

[0341] In a possible implementation, the target reference signal is associated with at least one spatial domain filtering matrix. The sending module 31 is specifically configured to send the target reference signal to the second device according to a first spatial domain filtering matrix in the at least one spatial domain filtering matrix.

[0342] In a possible implementation, the K sub-channels are located in one carrier or one BWP.

[0343] The signal transmission apparatus provided in the embodiments of the present application can send a target reference signal for determining an error between signals or channels on adjacent sub-channels to the second device in the case of sending a physical signal or a physical channel to the second device on at least two sub-channels, so that the second device can determine the error between signals or channels on adjacent sub-channels based on the target reference signal and perform compensation processing on the error, thereby reducing the error between signals or channels on different sub-channels, and improving the quality of the physical signal or the physical channel, and thus improving the communication quality.

[0344] The signal transmission apparatus provided in the embodiments of the present application can implement Figure 3 the processes of the method embodiments, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0345] As shown in Figure 22 , the embodiments of the present application further provide a communication device 40, which includes a processor 41 and a memory 42, and the memory 42 stores programs or instructions executable on the processor 41. For example, when the communication device 40 is a terminal, the programs or instructions are executed by the processor 41 to implement each step of the above signal transmission method embodiments, and achieve the same technical effects. When the communication device 40 is a network side device, the programs or instructions are executed by the processor 41 to implement each step of the above signal transmission method embodiments, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0346] The embodiments of the present application further provide a terminal, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the steps in the method embodiments as shown in Figure 3 . The terminal embodiments correspond to the above terminal side method embodiments, and each implementation process and implementation manner of the above method embodiments can be applied to the terminal embodiments, and achieve the same technical effects. The terminal can be the signal transmission apparatus as shown in Figure 21 . Specifically, Figure 23 a hardware structure diagram of a terminal for implementing the embodiments of the present application.

[0347] The terminal 500 includes, but is not limited to, at least part of components such as a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, and a processor 510.

[0348] Those skilled in the art can understand that the terminal 500 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 510 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 23 The terminal structure shown in the figure is not a limitation on the terminal, and the terminal can include more or fewer components than the figure, or combine certain components, or different component arrangements, which are not described here.

[0349] It should be understood that in the embodiments of the present application, the input unit 504 can include a graphics processor 5041 and a microphone 5042, and the graphics processor 5041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 506 can include a display panel 5061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 507 includes at least one of a touch panel 5071 and other input devices 5072. The touch panel 5071 is also called a touch screen. The touch panel 5071 can include two parts of a touch detection device and a touch controller. The other input devices 5072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, etc., which are not described here.

[0350] In the embodiments of the present application, the radio frequency unit 501 can transmit the downlink data received from the network side device to the processor 510 for processing, and can send uplink data to the network side device. Generally, the radio frequency unit 501 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0351] The memory 509 can be used to store software programs or instructions and various data. The memory 509 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 509 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 509 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0352] The processor 510 can include one or more processing units; optionally, the processor 510 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 510.

[0353] The radio frequency unit 501 is configured to transmit a physical signal or a physical channel to the second device in a frequency domain range of K sub-channels, K being a positive integer greater than 1; and transmit a target reference signal to the second device, the target reference signal being used to determine an error between signals or channels on adjacent sub-channels in the sub-channel in which the physical signal or the physical channel is transmitted.

[0354] In some embodiments of the present application, the radio frequency unit 501 is further configured to perform at least one of: receiving the first configuration information from the second device; and sending the first configuration information to the second device.

[0355] The first configuration information is used to configure the K sub-channels or N sub-channels, the N sub-channels being sub-channels in the K sub-channels in which physical signals or physical channels are sent, and N being a positive integer greater than 1.

[0356] In some embodiments of the present application, the target reference signal is associated with at least one spatial domain filtering matrix. The radio frequency unit 501 is specifically configured to send the target reference signal to the second device according to a first spatial domain filtering matrix in the at least one spatial domain filtering matrix.

[0357] The embodiments of the present application provide a terminal. In the case where the terminal sends physical signals or physical channels to the second device on at least two sub-channels, the terminal can further send a target reference signal to the second device, the target reference signal being used to determine an error between signals or channels on adjacent sub-channels in the sub-channels in which the physical signals or physical channels are sent. The second device can determine the error between the signals or channels on the adjacent sub-channels based on the target reference signal, and perform compensation processing on the error. Therefore, the error between the signals or channels on different sub-channels can be reduced, and thus the quality of the physical signals or physical channels can be improved. In this way, the communication quality can be improved.

[0358] It can be understood that the implementation processes of the implementation manners mentioned in the embodiments can refer to the related descriptions of the signal transmission method embodiments, and achieve the same or corresponding technical effects. To avoid repetition, they will not be described here again.

[0359] The embodiments of the present application further provide a network side device, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement the steps of the method embodiments as shown in Figure 3 The network side device embodiments correspond to the network side device method embodiments. The implementation processes and implementation manners of the method embodiments can be applied to the network side device embodiments, and achieve the same technical effects.

[0360] Specifically, the embodiments of the present application further provide a network side device, which can be a signal transmission apparatus as shown in Figure 21 Figure 24 ​As shown, the network-side device 600 includes an antenna 601, a radio frequency device 602, a baseband device 603, a processor 604, and a memory 605. The antenna 601 is connected with the radio frequency device 602. In the uplink direction, the radio frequency device 602 receives information through the antenna 601, and sends the received information to the baseband device 603 for processing. In the downlink direction, the baseband device 603 processes information to be sent, and sends the processed information to the radio frequency device 602, which processes the received information and sends it out through the antenna 601.

[0361] The method performed by the network-side device in the above embodiments can be implemented in the baseband device 603, which includes a baseband processor.

[0362] The baseband device 603 may, for example, include at least one baseband board on which a plurality of chips are disposed, such as Figure 24 As shown, one of the chips is, for example, a baseband processor, which is connected with the memory 605 through a bus interface to call programs in the memory 605 and perform the operations of the network-side device shown in the above method embodiments.

[0363] The network-side device may, for example, further include a network interface 606, which is, for example, a Common Public Radio Interface (CPRI).

[0364] Specifically, the network-side device 600 of the embodiments of the present application further includes instructions or programs stored in the memory 605 and executable on the processor 604, and the processor 604 calls the instructions or programs in the memory 605 to perform the methods of the modules shown in the above embodiments and achieve the same technical effects. To avoid repetition, details are not described here. Figure 21

[0365] The embodiments of the present application also provide a readable storage medium having programs or instructions stored thereon, which, when executed by a processor, implement each process of the above signal transmission method embodiments and achieve the same technical effects. To avoid repetition, details are not described here.

[0366] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0367] ​The embodiment of the present application further provides a chip, which comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions, realizes various processes of the signal transmission method embodiment, and can achieve the same technical effects. To avoid repetition, details are not repeated here.

[0368] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0369] The embodiment of the present application further provides a computer program / program product stored in a storage medium, which is executed by at least one processor to realize various processes of the above-mentioned signal transmission method embodiment, and can achieve the same technical effects. To avoid repetition, details are not repeated here.

[0370] It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "includes a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to the order of functions shown or discussed, but can also include functions performed in a substantially simultaneous manner or in the opposite order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0371] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of computer software product and general hardware platform, of course, it can also be realized by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), which includes a plurality of instructions for making terminal or network side equipment execute the method described in various embodiments of the present application.

[0372] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms of embodiments under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these embodiments all belong to the protection of the present application.

Claims

1. A signal transmission method, characterized in that, include: The first device transmits physical signals or physical channels to the second device within the frequency domain of K sub-channels, where K is a positive integer greater than 1; The first device sends a target reference signal to the second device, the target reference signal being used to determine the error between signals or channels on adjacent sub-channels in the sub-channels that transmit physical signals or physical channels.

2. The method according to claim 1, characterized in that, The target reference signal includes a first reference signal, which is transmitted across N sub-channels. The N sub-channels are the sub-channels that transmit physical signals or physical channels among the K sub-channels, and N is a positive integer greater than 1. Wherein, the first reference signal is transmitted on a first resource of the first reference signal with a first frequency domain density, and on a second resource of the first reference signal other than the first resource with a second frequency domain density, wherein the first frequency domain density is greater than the second frequency domain density; The first frequency domain range of the first resource is located in the frequency domain range corresponding to the N sub-channels, and the first frequency domain range includes: the first frequency domain boundary among the T frequency domain boundaries between the N sub-channels, where T is a positive integer.

3. The method according to claim 2, characterized in that, The first frequency domain range satisfies at least one of the following: The first frequency domain range is determined by the first frequency domain offset and the first bandwidth; The first frequency domain range is determined by the first frequency domain boundary and the first bandwidth; The first frequency domain range is determined by the starting frequency domain position and the first bandwidth of the first frequency domain range; The bandwidth of the first frequency domain range is the second bandwidth; The number of the first frequency domain ranges is determined by the number T of the T frequency domain boundaries; Wherein, the first frequency domain offset is the frequency domain offset between the starting frequency domain position of the first frequency domain range and the boundary of the first frequency domain; The second bandwidth is equal to the frequency domain spacing between two adjacent resource units (REs) of the second resource within the second frequency domain range.

4. The method according to claim 2, characterized in that, The first frequency domain density satisfies at least one of the following: The first frequency domain density is determined by the continuous REs of the first resource within the first frequency domain range; The first frequency domain density is determined by the non-continuous and equally spaced REs of the first resource within the first frequency domain.

5. The method according to claim 2, characterized in that, The temporal location of the first resource satisfies at least one of the following: The time-domain position of the time unit of the first resource is the same as the time-domain position of the time units included in all time-domain resources of the first reference signal; The time-domain location of the time unit of the first resource is the same as the time-domain location of the time unit included in the partial time-domain resources of the first reference signal.

6. The method according to claim 2, characterized in that, RE mapping of the first reference signal satisfies at least one of the following: Within the same time unit, the RE values ​​of the first resource are the same within the first frequency domain range; Within the same time unit, the RE value of the first resource in the first frequency domain range is the same as the RE value of the second resource; Within the same time unit, the RE value of the first resource in the first frequency domain range is the same as the RE value of the first reference signal mapped according to the second frequency domain density in the first frequency domain range; Within the same time unit, taking the REs of the first resource in the first frequency domain range and other REs of the first reference signal as a whole, the sequence of the first reference signal is mapped to the corresponding RE.

7. The method according to claim 6, characterized in that, Within the same time unit, the RE value of the first resource in the first frequency domain range is the same as the RE value of the second resource, satisfying the following: The value of the RE of the first resource within the first frequency domain range is the same as the value of the RE of the second resource that is closest to the first frequency domain range.

8. The method according to any one of claims 2 to 7, characterized in that, The first reference signal has Q first ports, where Q is a positive integer greater than 1. The Q first ports include the first port associated with the first resource, and the first port associated with the first resource satisfies at least one of the following: The first port associated with the first resource is Q first ports; The first port associated with the first resource is a portion of the Q first ports.

9. The method according to claim 1, characterized in that, The target reference signal includes a second reference signal, which is transmitted on a third resource of the second reference signal; Wherein, the third frequency domain range of the third resource is located in the frequency domain range corresponding to the N sub-channels, and the N sub-channels are the sub-channels that transmit physical signals or physical channels among the K sub-channels, and N is a positive integer greater than 1.

10. The method according to claim 9, characterized in that, The third frequency domain range satisfies at least one of the following: The second frequency domain boundary is included among the T frequency domain boundaries between the N sub-channels; It does not include any of the T frequency domain boundaries between the N sub-channels; Where T is a positive integer.

11. The method according to claim 9, characterized in that, The third frequency domain range satisfies at least one of the following: The third frequency domain range is determined by the second frequency domain offset and the third bandwidth; When the third frequency domain range includes the boundary of the second frequency domain, the third frequency domain range is determined by the boundary of the second frequency domain and the third bandwidth; The third frequency domain range is determined by the starting frequency domain position and the third bandwidth of the third frequency domain range; The bandwidth of the third frequency domain range does not exceed the bandwidth of the fourth frequency domain. The number of the third frequency domain range is determined by the number T of the T frequency domain boundaries between the N sub-channels; Wherein, the second frequency domain offset is the frequency domain offset between the starting position of the third frequency domain range and the boundary of the second frequency domain; The fourth bandwidth is equal to the bandwidth corresponding to M physical resource blocks (PRBs), where M is a positive integer.

12. The method according to claim 9, characterized in that, The second reference signal is transmitted on the third resource at a third frequency domain density, the third frequency domain density satisfying at least one of the following: The third frequency domain density is determined by the continuous REs of the third resource within the third frequency domain range; The third frequency domain density is determined by the non-continuous and equally spaced REs of the third resource within the third frequency domain.

13. The method according to claim 9, characterized in that, The third resource includes L orthogonal frequency division multiplexing (OFDM) symbols, where L is a positive integer greater than 1; the L OFDM symbols satisfy at least one of the following: The frequency domain position of the RE corresponding to each OFDM symbol is the same; The L OFDM symbols can be consecutive or discontinuous.

14. The method according to claim 9, characterized in that, The second reference signal comprises R second ports, where R is a positive integer, and the R second ports satisfy at least one of the following: When R is greater than 1, the R second ports can be distinguished using the first method; When the third frequency domain range includes the second frequency domain boundary, and the third resource is divided into a fourth resource and a fifth resource by the second frequency domain boundary, the fourth resource corresponds to a portion of the second ports among the R second ports, and the fifth resource corresponds to another portion of the second ports among the R second ports; The first method includes at least one of the following: frequency division multiplexing, time division multiplexing, and code division multiplexing; Wherein, the second frequency domain boundary is: the frequency domain boundary among the T frequency domain boundaries between the N sub-channels.

15. The method according to claim 9, characterized in that, The second reference signal has R second ports, where R is a positive integer; Among them, the third port of the R second ports is associated with the fourth port of the third reference signal; The third port and the fourth port can be used to jointly determine the error between signals on adjacent sub-channels or between channels.

16. The method according to any one of claims 9 to 15, characterized in that, The first device does not intend to map the second reference signal and the third reference signal onto the same RE.

17. The method according to any one of claims 9 to 16, characterized in that, RE mapping of the second reference signal satisfies at least one of the following: The value of the RE of the third resource is the same as the value of a specific RE of the sixth resource of the third reference signal; RE mapping is performed independently on the second reference signal.

18. The method according to claim 17, characterized in that, The specific RE satisfies any of the following: If the third frequency domain range only includes the first RE of the sixth resource, then the specific RE is the first RE; If the third frequency domain includes at least two second REs of the sixth resource, then the specific RE is the second RE with the lowest frequency domain position among the at least two second REs; If the RE of the sixth resource is not included in the third frequency domain range, then the specific RE is the RE of the third resource that is closest to the third frequency domain range.

19. The method according to any one of claims 1 to 18, characterized in that, The method further includes at least one of the following: The first device receives first configuration information from the second device; The first device sends first configuration information to the second device; Wherein, the first configuration information is used to configure K or N sub-channels, where N sub-channels are the sub-channels that transmit physical signals or physical channels among the K sub-channels, and N is a positive integer greater than 1.

20. The method according to any one of claims 1 to 19, characterized in that, The target reference signal is associated with at least one spatial filtering matrix; The first device sends a target reference signal to the second device, including: The first device sends the target reference signal to the second device according to at least one of the first spatial filtering matrices.

21. The method according to any one of claims 1 to 20, characterized in that, The K sub-channels are located within a single carrier or a bandwidth portion (BWP).

22. A signal transmission device, characterized in that, include: The transmitting module is used to transmit physical signals or physical channels to the second device within the frequency domain of K sub-channels, where K is a positive integer greater than 1; and to transmit a target reference signal to the second device, wherein the target reference signal is used to determine the error between signals or channels on adjacent sub-channels in the sub-channels for transmitting physical signals or physical channels.

23. The signal transmission device according to claim 22, characterized in that, The target reference signal includes a first reference signal, which is transmitted across N sub-channels. The N sub-channels are the sub-channels that transmit physical signals or physical channels among the K sub-channels, and N is a positive integer greater than 1. Wherein, the first reference signal is transmitted on a first resource of the first reference signal with a first frequency domain density, and on a second resource of the first reference signal other than the first resource with a second frequency domain density, wherein the first frequency domain density is greater than the second frequency domain density; The first frequency domain range of the first resource is located in the frequency domain range corresponding to the N sub-channels, and the first frequency domain range includes: the first frequency domain boundary among the T frequency domain boundaries between the N sub-channels, where T is a positive integer.

24. The signal transmission device according to claim 23, characterized in that, The first frequency domain range satisfies at least one of the following: The first frequency domain range is determined by the first frequency domain offset and the first bandwidth; The first frequency domain range is determined by the first frequency domain boundary and the first bandwidth; The first frequency domain range is determined by the starting frequency domain position and the first bandwidth of the first frequency domain range; The bandwidth of the first frequency domain range is the second bandwidth; The number of the first frequency domain ranges is determined by the number T of the T frequency domain boundaries; Wherein, the first frequency domain offset is the frequency domain offset between the starting frequency domain position of the first frequency domain range and the boundary of the first frequency domain; The second bandwidth is equal to the frequency domain spacing between two adjacent REs within the second frequency domain range of the second resource.

25. The signal transmission device according to claim 23, characterized in that, The first frequency domain density satisfies at least one of the following: The first frequency domain density is determined by the continuous REs of the first resource within the first frequency domain range; The first frequency domain density is determined by the non-continuous and equally spaced REs of the first resource within the first frequency domain.

26. The signal transmission device according to claim 23, characterized in that, The temporal location of the first resource satisfies at least one of the following: The time-domain position of the time unit of the first resource is the same as the time-domain position of the time units included in all time-domain resources of the first reference signal; The time-domain location of the time unit of the first resource is the same as the time-domain location of the time unit included in the partial time-domain resources of the first reference signal.

27. The signal transmission device according to claim 23, characterized in that, RE mapping of the first reference signal satisfies at least one of the following: Within the same time unit, the RE values ​​of the first resource are the same within the first frequency domain range; Within the same time unit, the RE value of the first resource in the first frequency domain range is the same as the RE value of the second resource; Within the same time unit, the RE value of the first resource in the first frequency domain range is the same as the RE value of the first reference signal mapped according to the second frequency domain density in the first frequency domain range; Within the same time unit, taking the REs of the first resource in the first frequency domain range and other REs of the first reference signal as a whole, the sequence of the first reference signal is mapped to the corresponding RE.

28. The signal transmission device according to claim 27, characterized in that, Within the same time unit, the RE value of the first resource in the first frequency domain range is the same as the RE value of the second resource, satisfying the following: The value of the RE of the first resource within the first frequency domain range is the same as the value of the RE of the second resource that is closest to the first frequency domain range.

29. The signal transmission device according to any one of claims 23 to 28, characterized in that, The first reference signal has Q first ports, where Q is a positive integer greater than 1. The Q first ports include the first port associated with the first resource, and the first port associated with the first resource satisfies at least one of the following: The first port associated with the first resource is Q first ports; The first port associated with the first resource is a portion of the Q first ports.

30. The signal transmission device according to claim 22, characterized in that, The target reference signal includes a second reference signal, which is transmitted on a third resource of the second reference signal; Wherein, the third frequency domain range of the third resource is located in the frequency domain range corresponding to the N sub-channels, and the N sub-channels are the sub-channels that transmit physical signals or physical channels among the K sub-channels, and N is a positive integer greater than 1.

31. The signal transmission device according to claim 30, characterized in that, The third frequency domain range satisfies at least one of the following: The second frequency domain boundary is included among the T frequency domain boundaries between the N sub-channels; It does not include any of the T frequency domain boundaries between the N sub-channels; Where T is a positive integer.

32. The signal transmission device according to claim 31, characterized in that, The third frequency domain range satisfies at least one of the following: The third frequency domain range is determined by the second frequency domain offset and the third bandwidth; When the third frequency domain range includes the boundary of the second frequency domain, the third frequency domain range is determined by the boundary of the second frequency domain and the third bandwidth; The third frequency domain range is determined by the starting frequency domain position and the third bandwidth of the third frequency domain range; The bandwidth of the third frequency domain range does not exceed the bandwidth of the fourth frequency domain. The number of the third frequency domain range is determined by the number T of the T frequency domain boundaries between the N sub-channels; Wherein, the second frequency domain offset is the frequency domain offset between the starting position of the third frequency domain range and the boundary of the second frequency domain; The fourth bandwidth is equal to the bandwidth corresponding to M PRBs, where M is a positive integer.

33. The signal transmission device according to claim 30, characterized in that, The second reference signal is transmitted on the third resource at a third frequency domain density, the third frequency domain density satisfying at least one of the following: The third frequency domain density is determined by the continuous REs of the third resource within the third frequency domain range; The third frequency domain density is determined by the non-continuous and equally spaced REs of the third resource within the third frequency domain.

34. The signal transmission device according to claim 30, characterized in that, The third resource comprises L OFDM symbols, where L is a positive integer greater than 1; the L OFDM symbols satisfy at least one of the following: The frequency domain position of the RE corresponding to each OFDM symbol is the same; The L OFDM symbols can be consecutive or discontinuous.

35. The signal transmission device according to claim 30, characterized in that, The second reference signal comprises R second ports, where R is a positive integer, and the R second ports satisfy at least one of the following: When R is greater than 1, the R second ports can be distinguished using the first method; When the third frequency domain range includes the second frequency domain boundary, and the third resource is divided into a fourth resource and a fifth resource by the second frequency domain boundary, the fourth resource corresponds to a portion of the second ports among the R second ports, and the fifth resource corresponds to another portion of the second ports among the R second ports; The first method includes at least one of the following: frequency division multiplexing, time division multiplexing, and code division multiplexing; Wherein, the second frequency domain boundary is: the frequency domain boundary among the T frequency domain boundaries between the N sub-channels.

36. The signal transmission device according to claim 30, characterized in that, The second reference signal has R second ports, where R is a positive integer; Among them, the third port of the R second ports is associated with the fourth port of the third reference signal; The third port and the fourth port can be used to jointly determine the error between signals on adjacent sub-channels or between channels.

37. The signal transmission device according to any one of claims 30 to 36, characterized in that, RE mapping of the second reference signal satisfies at least one of the following: The value of the RE of the third resource is the same as the value of a specific RE of the sixth resource of the third reference signal; RE mapping is performed independently on the second reference signal.

38. The signal transmission device according to claim 37, characterized in that, The specific RE satisfies any of the following: If the third frequency domain range only includes the first RE of the sixth resource, then the specific RE is the first RE; If the third frequency domain includes at least two second REs of the sixth resource, then the specific RE is the second RE with the lowest frequency domain position among the at least two second REs; If the RE of the sixth resource is not included in the third frequency domain range, then the specific RE is the RE of the third resource that is closest to the third frequency domain range.

39. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the signal transmission method as described in any one of claims 1 to 21.

40. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the signal transmission method as described in any one of claims 1 to 21.

41. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the signal transmission method as described in any one of claims 1 to 21.

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