Communication method, apparatus and device, chip, storage medium, product and program

Abstract

The present application provides a communication method, apparatus and device, a chip, a storage medium, a product and a program. The method comprises: a first device receiving first information from a second device, wherein the first information is used for indicating a first pilot signal of a control channel, and the first pilot signal is one or more of a plurality of pilot signals.

Description

Communication method, device, equipment, chip, storage medium, product and program Technical Field

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

[0002] In related technologies, for some specific terminal devices, the pilot signal of the control channel is generally predetermined, resulting in poor flexibility of the pilot signal.

[0003] Summary of the Invention

[0004] Embodiments of the present application provide a communication method, apparatus, device, chip, storage medium, product, and program.

[0005] In a first aspect, the communication method provided by the embodiments of the present application includes:

[0006] The first device receives first information from the second device, where the first information is used to indicate a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals.

[0007] In a second aspect, the communication method provided by the embodiments of the present application includes:

[0008] The second device sends first information to the first device, where the first information is used to indicate a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals.

[0009] In a third aspect, an embodiment of the present application provides a communication apparatus, applied to a first device, comprising:

[0010] The first receiving unit is configured to receive first information from the second device, where the first information is used to indicate a first pilot signal of a control channel, and the first pilot signal is one or more of a plurality of pilot signals.

[0011] In a fourth aspect, an embodiment of the present application provides a communication apparatus, applied to a second device, comprising:

[0012] The second sending unit is configured to send first information to the first device, where the first information is used to indicate a first pilot signal of a control channel, and the first pilot signal is one or more of the multiple pilot signals.

[0013] In a fifth aspect, an embodiment of the present application provides a communication device, comprising a processor and a memory. The memory is configured to store computer-executable instructions, and the processor is connected to the memory and configured to implement the communication method of the first or second aspect by executing the computer-executable instructions.

[0014] In a sixth aspect, the chip provided in an embodiment of the present application is used to implement the communication method of the first aspect or the second aspect mentioned above.

[0015] Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the communication method of the first aspect or the second aspect mentioned above.

[0016] In the seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by at least one processor, implements the communication method of the first aspect or the second aspect mentioned above.

[0017] In an eighth aspect, an embodiment of the present application provides a computer program product, which includes a computer storage medium storing a computer program, and the computer program includes instructions that can be executed by at least one processor, and when the instructions are executed by at least one processor, the communication method of the first or second aspect above is implemented.

[0018] In the ninth aspect, the computer program provided in the embodiment of the present application, when running on a computer, enables the computer to execute the communication method of the first aspect or the second aspect mentioned above.

[0019] An embodiment of the present application provides a communication method in which a first device can receive first information from a second device, where the first information indicates a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals. Thus, by using the first information to indicate the first pilot signal of the control channel, the flexibility of the first pilot signal can be improved. After receiving the first information, the first device can obtain a first pilot signal that matches its actual wireless environment, thereby achieving good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] FIG1 is a schematic diagram of a communication architecture;

[0022] FIG2A is a schematic diagram of a scenario 1 of a demodulation reference signal of one symbol;

[0023] FIG2B is a schematic diagram of a scenario 1 of a demodulation reference signal with two symbols;

[0024] FIG3A is a second schematic diagram of a scenario of a demodulation reference signal of one symbol;

[0025] FIG3B is a schematic diagram of a second scenario of a demodulation reference signal with two symbols;

[0026] FIG4 is a flow chart of a communication method provided in an embodiment of the present application;

[0027] FIG5 is a schematic diagram of a scenario of time-frequency resources for transmitting pilot signals and control information provided by an embodiment of the present application;

[0028] FIG6 is a second schematic diagram of a scenario of time-frequency resources for transmitting pilot signals and control information provided by an embodiment of the present application;

[0029] FIG7 is a schematic diagram of a third scenario of time-frequency resources for transmitting pilot signals and control information provided by an embodiment of the present application;

[0030] FIG8 is a fourth schematic diagram of a scenario of time-frequency resources for transmitting pilot signals and control information provided by an embodiment of the present application;

[0031] FIG9 is a fifth schematic diagram of a scenario of time-frequency resources for transmitting pilot signals and control information provided by an embodiment of the present application;

[0032] FIG10 is a schematic diagram of a scenario 1 of a frequency domain position of a pilot signal occupying time-frequency resources provided by an embodiment of the present application;

[0033] FIG11 is a second schematic diagram of a scenario of a frequency domain position of a pilot signal occupying time-frequency resources provided by an embodiment of the present application;

[0034] FIG12 is a schematic diagram of the structure of a communication device 1200 provided in an embodiment of the present application;

[0035] FIG13 is a schematic diagram of the structure of a communication device 1300 provided in an embodiment of the present application;

[0036] FIG14 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0037] FIG15 is a schematic structural diagram of a chip provided in an embodiment of the present application;

[0038] FIG16 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] FIG1 is a schematic diagram of a communication architecture.

[0041] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0042] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems.

[0043] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 located in the coverage area.

[0044] The network device 120 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0045] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0046] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0047] The terminal device 110 can be used for device-to-device (D2D) communication.

[0048] FIG1 exemplarily shows a network device and two terminal devices. It should be understood that the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0049] It should be noted that FIG1 is only an example of a system to which this application is applicable. Of course, the method shown in the embodiment of this application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this article.

[0050] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0051] It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0052] It should also be understood that the "correspondence" mentioned in the embodiments of the present application may indicate a direct or indirect correspondence between the two, or an association between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0053] It should also be understood that the “predefined” or “predefined rules” or “pre-regulations” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of the present application, the “protocol” may refer to a standard protocol in the field of communications, for example, it may include LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0054] It should also be understood that the term "at least one" may refer to one or more (two or more). For example, at least one device may refer to one or two or more devices.

[0055] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0056] In related technologies, the basic workflow of a wireless communication system may include the following steps:

[0057] At the transmitting end, the bit stream information to be transmitted is channel coded to obtain the coded bit information; the coded bit information is modulated to obtain modulation symbols; the modulation symbols and demodulation reference signals (DMRS) are inserted into the corresponding time-frequency resources, and then after subsequent processing, orthogonal frequency division multiplexing (OFDM) symbols, single-carrier frequency division multiple access (SC-FDMA) symbols, or other forms of multi-carrier symbols can be obtained.

[0058] It should be understood that the above process is based on the OFDM and SC-FDMA systems as examples and can also be applied to other systems, which is not limited in the embodiments of the present application.

[0059] Exemplarily, in the process of modulating the encoded bits to obtain modulation symbols, one or more of the following may be used: binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), 16 quadrature amplitude modulation (QAM), 64QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, and 4096QAM.

[0060] Exemplarily, the modulation symbols and DMRS signals are inserted into corresponding resource elements (RE).

[0061] At the receiving end, the receiver measures the DMRS signal channel estimation, demodulates the modulated symbols, and performs channel decoding to obtain the bit information transmitted by the sending end.

[0062] It should be understood that the above steps can be combined and iterated, and the above order does not necessarily have to be strictly followed. For example, the information obtained by decoding can be used for channel estimation and / or for modulation symbol demodulation.

[0063] It should be noted that the basic working process of the wireless communication system is similar regardless of downlink transmission (DL transmission), uplink transmission (UL transmission) or sidelink transmission (SL transmission).

[0064] Exemplarily, downlink transmission may be transmission from a network device to a terminal device, uplink transmission may be transmission from a terminal device to a network device, and sidelink transmission may be transmission between terminal devices.

[0065] It should also be noted that in order to obtain the bit information transmitted by the transmitting end, the receiving end needs to use the DMRS signal.

[0066] Due to the complexity and time-varying nature of wireless channel environments, the receiver's estimation and recovery of wireless channels directly impacts the ultimate data recovery performance. In traditional communication systems, for control channels (i.e., channels that transmit control information), DMRS signals are relatively fixed. That is, the density and / or pattern of DMRS signals do not need to change dynamically. In this case, the design of DMRS signals is relatively conservative, adapting to various wireless channel environments. In wireless communication systems, for data channels (i.e., channels that transmit data), different DMRS signal densities and / or patterns are often designed to reduce DMRS signal overhead, allowing the DMRS signal to be configured or indicated based on the current wireless channel environment.

[0067] The following is a brief introduction using the data DMRS signal in the NR communication system as an example.

[0068] In the NR communication system, DMRS signals can be divided into front-loaded DMRS signals (also known as front-loaded DMRS signals) and post-loaded DMRS signals (also known as additional DMRS signals).

[0069] For example, for high-speed UEs, in order to improve the channel estimation performance, some DMRS signals are added on the basis of the front DMRS signal. For example, the high-speed UE can send an additional DMRS signal at a certain position in the rear part of the allocated time domain resources, so as to obtain the rear DMRS signal.

[0070] It should be noted that the pre-DMRS signal is typically located in the first few OFDM symbols of a time slot, and the post-DMRS signal pattern is a repetition of the pre-DMRS signal (for example, using the same frequency domain resources, or the same number of OFDM symbols) to ensure performance in high-speed scenarios. The pre-DMRS signal can contain one or two OFDM symbols, which is configured by the network equipment.

[0071] It should also be noted that NR can support two different DMRS signal types, Type 1 and Type 2. Different types of DMRS signals occupy resources in different ways. The following uses an example where a small grid represents one RE, 12 subcarriers in the frequency domain resources form one resource block (RB), and 7 symbols in the time domain resources, and combines Figures 2A to 3B to illustrate the two different DMRS signal types.

[0072] As shown in Figures 2A and 2B, two code division multiplexing (CDM) groups can be supported on one symbol (e.g., OFDM symbol) of each physical resource block (PRB), and each CDM group includes 6 subcarriers; wherein the first CDM group is carried by the first type of RE, and the second CDM group is carried by the second type of RE. Each CDM group can support two ports, and the two ports are orthogonalized by an orthogonal cover code (OCC). That is, the OCC code used by one port is [+1 +1 +1 +1 +1 +1], and the OCC code used by the other port is [+1 -1 +1 -1 +1 -1].

[0073] Exemplarily, as shown in FIG2A , a maximum of four orthogonal ports can be supported on one symbol.

[0074] For example, as shown in FIG2B , a maximum of eight orthogonal ports can be supported on two symbols, and a time domain orthogonal cover code (TD-OCC) can be used between the two symbols. For example, the first CDM group of the first symbol includes ports {1000, 1001}, and the second CDM group of the first symbol includes ports {1002, 1003}; the first CDM group of the second symbol includes ports {1004, 1005}, and the second CDM group of the second symbol includes ports {1006, 1007}.

[0075] As shown in Figures 3A and 3B, three CDM groups can be supported on one symbol in each PRB. Each CDM group contains four adjacent subcarriers. The first CDM group is carried by the first type of REs, the second by the second type of REs, and the third by the third type of REs. Each CDM group can support two ports, and the two ports are orthogonalized by OCC. That is, the OCC code used by one port is [+1 +1 +1 +1], and the OCC code used by the other port is [+1 -1 +1 -1].

[0076] Exemplarily, as shown in FIG3A , a maximum of 6 orthogonal ports can be supported on one symbol.

[0077] For example, as shown in FIG3B , a maximum of 12 orthogonal ports can be supported on two symbols, and TD-OCC is used between the two symbols. For example, the first CDM group of the first symbol includes ports {1000, 1001}, the second CDM group of the first symbol includes ports {1002, 1003}, and the third CDM group of the first symbol includes ports {1004, 1005}; the first CDM group of the second symbol includes ports {1006, 1007}, the second CDM group of the second symbol includes ports {1008, 1009}, and the third CDM group of the second symbol includes ports {1010, 1011}.

[0078] The network equipment side instructs the transmission of the Physical Downlink Control Channel (PDCCH) by configuring the Control Resource Set (CORESET) and the Search Space (Search Space).

[0079] It should be noted that a CORESET may include multiple PRBs in the frequency domain and 1 to 3 OFDM symbols in the time domain. The time domain resources occupied by the CORESET may be semi-statically configured by higher-layer parameters.

[0080] It should also be noted that a search space is a set of PDCCH candidates at one or more aggregation levels. A search space can also be called a search space set. The two refer to the same concept in the protocol.

[0081] It should also be noted that the terminal device can decode the candidate PDCCH in the search space. If the cyclic redundancy check (CRC) passes, the decoded candidate PDCCH can be considered valid for the terminal device, and the decoded candidate PDCCH can be used for subsequent operations.

[0082] Furthermore, the aggregation level of the PDCCH actually sent by the network device may change over time. Since there is no relevant signaling to inform the terminal device, the terminal device needs to blindly detect the PDCCH at different aggregation levels; the PDCCH to be blindly detected can be called a candidate PDCCH.

[0083] In the NR communication system, a resource element group (REG) can consist of 12 subcarriers on a symbol, and 6 REGs can form a control channel element (CCE). A PDCCH candidate can use one or more CCEs in a CORESET, reflecting the aggregation level. The aggregation levels can include 1, 2, 4, 8, and 16, corresponding to 1, 2, 4, 8, and 16 CCEs, respectively.

[0084] In each downlink bandwidth part (Bandwidth Part, BWP) of each serving cell, the network equipment side can configure up to 10 search spaces for the terminal device. The search space is configured with time domain configuration information, which can be used to indicate the time domain position of the terminal device to detect the PDCCH. At the same time, the network equipment side configures a CORESET ID associated with the search space for each search space. Through the CORESET ID, the terminal device can obtain the physical resources of the search space in the frequency domain. Each search space has a uniquely associated CORESET ID, and different search spaces can be associated with the same CORESET ID. The terminal device can determine the time and frequency domain position of the PDCCH Candidate based on the time domain given by the search space, the frequency domain of the CORESET ID associated with the search space, and other parameters in the search space.

[0085] When configuring a CORESET, the network device can configure one or a group of Transmission Configuration Indicator States (TCI States) for each CORESET. The TCI State can be used to indicate the relevant parameters required by the terminal device for demodulation detection of the PDCCH Candidate in the search space associated with the CORESET. When the network device configures a group of TCI States for a CORESET, the network device activates a TCI State for the CORESET through Media Access Control Element (MAC CE) signaling, so that the activated TCI State can be used to assist the terminal device in demodulating the PDCCH.

[0086] In addition, the network device can also configure a higher layer index (i.e., CORESET Pool Index) for each CORESET to indicate the group. The value range of this higher layer index is 0 and 1. This higher layer index can implicitly indicate whether it is the same transmission reception point (TRP). For example, for CORESETs configured with the same higher layer index, the terminal device can consider the data to be from the same TRP.

[0087] It should be noted that the protocol can determine whether each CORESET is associated with a high-level identifier, but the protocol cannot reflect the physical entity of the TRP.

[0088] In the embodiments of the present application, RE, RB and symbols are mentioned many times. RE, RB and symbols are briefly described below.

[0089] RE: The smallest time-frequency resource unit in a wireless communication system. For example, in NR or LTE systems, one RE in the frequency domain corresponds to one subcarrier, and one RE in the time domain corresponds to one symbol.

[0090] RB: can be for K consecutive subcarriers in the frequency domain. In addition, in some systems, RB can also be for K consecutive subcarriers in the frequency domain and for M consecutive symbols in the time domain.

[0091] Exemplarily, the value of K may be one or more of 8, 12, and 16, or other values, which is not limited in the embodiments of the present application.

[0092] Exemplarily, the value of M can be one or more of 6, 7, 13, and 14, or other values, which is not limited in the embodiments of the present application.

[0093] It should be noted that in the embodiment of the present application, no distinction is made between RB and PRB, and the RB and PRB in the embodiment of the present application are collectively referred to as PRB.

[0094] Symbol: The symbol in the embodiment of the present application can be an OFDM symbol, an SC-FDMA symbol, or other forms of multi-carrier symbols, which is not limited in the embodiment of the present application.

[0095] It should be noted that the SC-FDMA symbol can also be called a discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-SOFDM) symbol, or the SC-FDMA symbol can also be called a multi-carrier symbol using a transform precoder (Transform Precoder), or the SC-FDMA symbol can also be called an OFDM symbol using a transform precoder.

[0096] In related technologies, control channel pilot signals are typically pre-defined for certain terminal devices, resulting in limited flexibility. For example, certain terminal devices may require a higher (or lower) density of pilot signals to achieve good performance, depending on their actual wireless environment.

[0097] Based on this, an embodiment of the present application provides a communication method in which a first device can receive first information from a second device, where the first information is used to indicate a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals. Thus, by using the first information to indicate the first pilot signal of the control channel, the flexibility of the first pilot signal can be improved. After receiving the first information, the first device can obtain a first pilot signal that matches its actual wireless environment, thereby achieving good performance.

[0098] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0099] FIG4 is a flow chart of a communication method provided in an embodiment of the present application. As shown in FIG4 , the method may include the following steps.

[0100] S410: A first device receives first information from a second device, where the first information is used to indicate a first pilot signal of a control channel, and the first pilot signal is one or more of a plurality of pilot signals.

[0101] Accordingly, the second device may send the first information to the first device.

[0102] It should be noted that, in the embodiment of the present application, the first device may be a first terminal device; the second device may be a second terminal device or a network device, and the embodiment of the present application does not limit this.

[0103] For example, in the embodiment of the present application, a typical example of a pilot signal is a DMRS signal. The pilot signal may also be a Channel State Information Reference Signal (CSI-RS), a Phase Tracking Reference Signal (PT-RS), etc., which is not limited in the embodiment of the present application.

[0104] In some embodiments, the first pilot signal may be related to one or more of the following:

[0105] a pilot signal type supported by the first device;

[0106] the speed of the first device;

[0107] A wireless channel environment between the first device and the second device.

[0108] It should be noted that the first pilot signal may be related to the pilot signal type supported by the first device. This means that the first pilot signal may be determined based on the pilot signal type supported by the first device. In other words, the first device may select a matching first pilot signal from a plurality of predefined pilot signals based on the pilot signal type supported by the first device; alternatively, the second device may indicate the first pilot signal from a plurality of predefined pilot signals based on the pilot signal type supported by the first device.

[0109] Furthermore, the pilot signal types can be divided into two categories based on whether the time-frequency resources occupied by the pilot signal are used to transmit the control information of the control channel, wherein: the time-frequency resources occupied by the first type of pilot signal are not used to transmit the control information of the control channel, and at least part of the time-frequency resources occupied by the second type of pilot signal can be used to transmit the control information of the control channel. The first pilot signal can be a first type pilot signal or a second type pilot signal.

[0110] It should be noted that the first pilot signal may be related to the speed of the first device. This means that the first pilot signal may be determined based on the speed of the first device. In other words, the first device may select a matching first pilot signal from a plurality of predefined pilot signals based on the speed of the first device; or the second device may indicate the first pilot signal from a plurality of predefined pilot signals based on the speed of the first device.

[0111] It should also be noted that the first pilot signal may be related to the wireless channel environment between the first device and the second device. This means that the first pilot signal may be determined based on the wireless channel environment between the first device and the second device. In other words, the first device may select a matching first pilot signal from a plurality of predefined pilot signals based on the wireless channel environment between the first device and the second device; alternatively, the second device may indicate the first pilot signal from a plurality of predefined pilot signals based on the wireless channel environment between the first device and the second device.

[0112] Through this method, the first pilot signal of the control channel can be indicated by the first information, thereby improving the flexibility of the first pilot signal, better matching the wireless environment, and improving system performance.

[0113] In some embodiments, the first information may be carried by one or more of the following:

[0114] Broadcast messages;

[0115] System messages;

[0116] Radio Resource Control (RRC) signaling;

[0117] Media Access Control Element (MAC CE) signaling;

[0118] Downlink Control Information (DCI);

[0119] Random access message; and,

[0120] Dedicated signaling.

[0121] Exemplarily, the broadcast message may be a Master Information Block (MIB) message.

[0122] Exemplarily, the system message may be a system information block type 1 (System Information Block Type 1, SIB1), a system information block (System Information Block, SIB), etc., which is not limited in the embodiments of the present application.

[0123] Exemplarily, the random access message may be a downlink message in the random access process. For example, the random access message may be message (Message, Msg) B, Msg2, Msg4, etc., which is not limited in the embodiment of the present application.

[0124] Exemplarily, the dedicated signaling may be artificial intelligence (AI) / machine learning (ML) dedicated signaling, etc., which is not limited in the embodiments of the present application.

[0125] It should be noted that the first information may be carried by the same signaling, for example, the first information may be carried by an RRC signaling, or for another example, the first information may be carried by a MAC CE signaling.

[0126] Furthermore, the first information can be carried through multiple identical signalings. For example, assuming that multiple identical signalings are two MAC CE signalings, part of the information in the first information can be carried through one MAC CE signaling, and the other part of the information can be carried through another MAC CE signaling; for another example, assuming that multiple identical signalings are two DCI signalings, part of the information in the first information can be carried through one DCI, and the other part of the information can be carried through another DCI; for another example, assuming that multiple identical signalings are two RRC signalings, part of the information in the first information can be carried through one RRC signaling, and the other part of the information can be carried through another RRC signaling.

[0127] It should be noted that the first information can be carried through different types of signaling.

[0128] Exemplarily, the first information may be carried by a broadcast message and RRC signaling. For example, part of the first information may be carried by a broadcast message, and another part may be carried by RRC signaling.

[0129] For example, the first information may be carried in a system message and a random access message. For another example, part of the first information may be carried in a system message, and the other part may be carried in a random access message.

[0130] It should be noted that, when the first information is carried through a broadcast message, the first information can notify all terminal devices (such as the first terminal device and other terminal devices), thereby reducing the total signaling overhead.

[0131] It should also be noted that, when the first information is carried through a system message, the first information can notify all terminal devices (such as the first terminal device and other terminal devices), thereby reducing the total signaling overhead.

[0132] It should also be noted that when the first information is carried through RRC signaling, each terminal device (such as the first terminal device and other terminal devices) can be configured separately, so that the performance of each terminal device can be improved more specifically and with better reliability.

[0133] It should also be noted that when the first information is carried through MAC CE signaling, each terminal device (such as the first terminal device and other terminal devices) can be configured separately, so that the performance of each terminal device can be improved more specifically, and with better reliability and lower latency.

[0134] It should also be noted that when the first information is carried through DCI, each terminal device (such as the first terminal device and other terminal devices) can be configured separately, so that the performance of each terminal device can be improved more specifically and with lower latency.

[0135] It should also be noted that, in the case where the first information is carried by a random access message, the random access message can be configured in advance, thereby improving system performance.

[0136] It should also be noted that when the first information is carried through dedicated signaling, transmission efficiency can be improved.

[0137] In some embodiments, the control channel may include a downlink control channel and / or a sidelink control channel.

[0138] Exemplarily, the downlink control channel may be a PDCCH.

[0139] Exemplarily, the sidelink control channel may be a PSCCH.

[0140] It should be noted that, when the first information is sent by the network device, the control channel may be a downlink control channel.

[0141] It should also be noted that, when the first information is sent by the second terminal device, the control channel may be a side control channel.

[0142] In some embodiments, the first information may indicate one or more of the following objects:

[0143] community;

[0144] carrier wave;

[0145] Bandwidth part;

[0146] Physical Sidelink Control Channel (PSCCH);

[0147] Control resource sets;

[0148] Control resource set groups; and,

[0149] Search space.

[0150] It should be noted that, when the first information indicates a cell, the first information may be information in the configuration information of the control channel in the cell, thereby reducing signaling overhead.

[0151] It should also be noted that, in the case where the first information indicates a carrier, the first information may be information in the configuration information of the control channel in the carrier, thereby reducing signaling overhead.

[0152] It should also be noted that, in the case where the first information indicates a bandwidth part, the first information may be information in the configuration information of the control channel in the bandwidth part, thereby reducing signaling overhead.

[0153] It should also be noted that, in the case where the first information indicates a PSCCH, the first information may be information in the configuration information of a PSCCH channel, thereby reducing signaling overhead.

[0154] It should also be noted that, when the first information indicates a control resource set, the first information may be information in a control resource set configuration information, or the first information may indicate a corresponding control resource set, thereby enabling more flexible control of each control resource set and providing greater freedom for network optimization.

[0155] It should also be noted that, when the first information indicates a control resource set group, the first information may be information in a control resource set group configuration information, or the first information may indicate the corresponding control resource set group, thereby enabling more flexible control of each control resource set group and providing greater freedom for network optimization.

[0156] Furthermore, in the NR communication system, a control resource set group can be called a CORESET pool.

[0157] It should also be noted that when the first information indicates a search space, the first information can be information in a search space configuration information, or the first information can indicate the corresponding search space, so that each search space set can be controlled more flexibly, providing greater freedom for network optimization.

[0158] Through this method, the first information indicates one or more of the above objects, and different configuration granularities can be obtained, thereby meeting different flexibility.

[0159] In some embodiments, the multiple pilot signals may maintain different configurations with respect to one or more of the following parameters:

[0160] Power parameters;

[0161] The time domain location of the occupied time-frequency resources;

[0162] The frequency domain position of the occupied time-frequency resources;

[0163] sequence generation methods; and,

[0164] Sequence generation parameters.

[0165] In some embodiments, the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel.

[0166] It should be noted that the time-frequency resources occupied by the first pilot signal are not used to transmit the control information of the control channel. It can be understood that the first pilot signal and the control information occupy different time-frequency resources, and the first pilot signal and the control information are orthogonally placed on the time-frequency resources. The first pilot signal and the control information do not overlap on the time-frequency resources. In other words, the first pilot signal and the control information can be placed on a time-frequency resource, but the first pilot signal and the control information cannot be placed at the same time. For the sake of simplicity, the first pilot signal in this scenario can be referred to as an orthogonal pilot signal.

[0167] For example, in the NR communication system, taking PDCCH as an example, one RE in every four REs is used to transmit the first pilot signal, and the other three REs are used to transmit the control information of the PDCCH.

[0168] For example, as shown in Figure 5, assuming that there are 12 REs (corresponding to 12 subcarriers) within an RB range, the time-frequency resources occupied by the first pilot signal are on the 1st, 5th, and 9th subcarriers within the RB range, and the time-frequency resources occupied by the PDCCH control information are on other subcarriers.

[0169] For example, as shown in Figure 6, assuming that there are 12 REs (corresponding to 12 subcarriers) within an RB range, the time-frequency resources occupied by the first pilot signal are on the 1st, 4th, 7th, and 10th subcarriers within the RB range, and the time-frequency resources occupied by the PDCCH control information are on other subcarriers.

[0170] Through this method, when the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel, the first pilot signal used by the first device is an orthogonal pilot signal in the related art, thereby avoiding the introduction of a new pilot signal and reducing the system complexity; wherein, the new pilot signal can be a non-orthogonal pilot signal (that is, one or more REs are used for the pilot signal and control information at the same time).

[0171] However, when the total time-frequency resources are constant, when the terminal device moves at a high speed, in order to improve the channel estimation performance, the first pilot signal is often required to occupy more time-frequency resources, resulting in a reduction in the time-frequency resources occupied by the control information, thereby reducing the transmission rate and transmission reliability of the control information.

[0172] Based on this, in some other embodiments, at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel. For simplicity of description, the first pilot signal in this scenario may be referred to as a non-orthogonal pilot signal.

[0173] It should be noted that at least part of the time-frequency resources can be one time-frequency resource occupied by the first pilot signal, or multiple time-frequency resources occupied by the first pilot signal (not all time-frequency resources), or all time-frequency resources occupied by the first pilot signal. The embodiments of the present application do not limit this.

[0174] It should also be noted that at least a portion of the time-frequency resources occupied by the first pilot signal are used to transmit control information. This can be understood as meaning that one or more or all of the time-frequency resources occupied by the first pilot signal are also time-frequency resources occupied by the control information. The first pilot signal and the control information coexist on these one or more or all of the time-frequency resources, i.e., one or more or all of the time-frequency resources occupied by the first pilot signal are also used to transmit control information. To simplify the description, at least a portion of the time-frequency resources may be referred to as shared time-frequency resources.

[0175] It should also be noted that at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information. It can be understood that at least part of the time-frequency resources occupied by the control information are used to transmit the first pilot signal.

[0176] Exemplarily, as shown in FIG7 , taking 2 symbols in the time domain and 12 subcarriers in the frequency domain (corresponding to 24 REs) as an example, all REs in FIG7 are used to transmit the first pilot signal and control information.

[0177] For example, as shown in Figure 8, taking 2 symbols in the time domain and 12 subcarriers in the frequency domain (corresponding to 24 REs) as an example, the REs corresponding to the 1st, 4th, 7th, and 10th subcarriers on the 0th symbol can be used for the transmission of the first pilot signal and control information, and the REs corresponding to the 1st, 4th, 7th, and 10th subcarriers on the 1st symbol can also be used for the transmission of the first pilot signal and control information. Other REs can be used for the transmission of control information.

[0178] For example, as shown in Figure 9, taking 2 symbols in the time domain and 12 subcarriers in the frequency domain (corresponding to 24 REs) as an example, the REs corresponding to the 1st, 3rd, 5th, 7th, 9th, and 11th subcarriers on the 0th symbol can be used for the transmission of the first pilot signal and control information, and the REs corresponding to the 0th, 2nd, 4th, 6th, 8th, and 10th subcarriers on the 1st symbol can also be used for the transmission of the first pilot signal and control information, and other REs can be used for the transmission of control information. It should be understood that in this embodiment of the present application, REs can be used for the transmission of the first pilot signal and the data signal, that is, the REs occupied by the first pilot signal can be used for the transmission of the data signal at the same time.

[0179] Through this method, at least part of the time-frequency resources occupied by the first pilot signal can also be occupied by control information, thereby increasing the time-frequency resources occupied by the control information and improving the transmission rate and transmission reliability of the control information.

[0180] It should be noted that in a Code Division Multiple Access (CDMA) system, although the pilot signal and control information can be transmitted on the same time-frequency resources, both the pilot signal and the control information need to undergo additional spread spectrum processing. For example, the pilot signal and the control information need to use different orthogonal codes to distinguish them. The embodiments of the present application are mainly used in OFDM systems / SC-FDMA systems, as well as other systems based on multiple subcarriers. The modulation symbols of the control information (such as QPSK, and 16QAM) and the modulation symbols of the demodulated pilot signal can be directly transmitted on the same time-frequency resources, and the pilot signal and the control information do not need to undergo additional spread spectrum processing.

[0181] In the embodiment of the present application, the first information may indicate the first pilot signal from the plurality of pilot signals through the information field. There are two possible implementations of the first information indicating the first pilot signal through the information field.

[0182] In a possible implementation, the first information includes a first information field, and a value of the first information field indicates a first pilot signal.

[0183] Exemplarily, the pilot signal can be indicated by different values ​​of the information field. For example, when the first information field takes the fourth value, the first information field indicates the first pilot signal. For another example, taking the first information field occupying 2 bits as an example, when the value of the first information field is "01", the first information field indicates the first pilot signal.

[0184] By using this method, when the pilot signal is indicated by the value of the information field, different values ​​of multiple information fields can indicate different pilot signals, thereby achieving better flexibility.

[0185] In another possible implementation, the first information includes a second information field, and the second information field indicates the first pilot signal if configured; or the second information field indicates the first pilot signal if not configured.

[0186] It should be noted that when the second information field indicates the first pilot signal when not configured, the first pilot signal can be considered as the default pilot signal. At this time, the first pilot signal can be determined based on one or more of the pre-set rules (such as protocol regulations), network broadcast information, and system information, thereby saving signaling overhead.

[0187] It should also be noted that, when the second information field is configured, its value can be "Enabled" or "Support", or its variations (such as Enable, Supported, and other related forms), so that it can flexibly indicate the first pilot signal and provide optimization space for the system.

[0188] In another possible implementation, the first information may indicate the first pilot signal by configuring different information fields based on a CHOICE structure.

[0189] Exemplarily, taking two information fields and two pilot signals as an example, assuming that the first information includes a third information field and a fourth information field, the third information field, if configured, can indicate that one of the pilot signals is the first pilot signal, or the fourth information field, if configured, can indicate that the other pilot signal is the first pilot signal.

[0190] By using this method, the flexibility of indicating the first pilot signal can be improved, providing optimization space for the system.

[0191] In this embodiment of the present application, the first device needs to obtain relevant parameters of the first pilot signal.

[0192] On the one hand, when the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel, if the first device cannot obtain the relevant parameters of the first pilot signal, it cannot perform corresponding processing based on the relevant parameters of the first pilot signal, thereby reducing system performance.

[0193] On the other hand, when at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel, the control information can be demodulated by the receiver.

[0194] Exemplarily, the receiver may be an iterative receiver, an AI / ML receiver, etc., which is not limited in the embodiments of the present application.

[0195] It should be noted that the receiver can use various algorithms such as deep learning. For example, the receiver can use one or a combination of fully convolutional neural networks (FCN), convolutional neural networks (CNN), recurrent neural networks (RNN), and transformer neural network architectures.

[0196] It should be understood that the premise of using the receiver to demodulate the control information is that the first device needs to know the relevant parameters of the first pilot signal, otherwise it will cause the receiver to adapt to the actual received control information, resulting in performance degradation.

[0197] Based on this, in an embodiment of the present application, the first information may indicate relevant parameters of the first pilot signal; or the relevant parameters of the first pilot signal may be predefined. Furthermore, the first information may indicate some relevant parameters of the first pilot signal, while predefining other relevant parameters of the first pilot signal. In the subsequent description, descriptions of relevant parameters generally also apply to some relevant parameters.

[0198] That is, in some embodiments, the first information may indicate one or more of the following parameters of the first pilot signal; or, one or more of the following parameters of the first pilot signal are predefined:

[0199] Power parameters;

[0200] The frequency domain position of the occupied time-frequency resources;

[0201] The time domain location of the occupied time-frequency resources;

[0202] sequence generation methods; and,

[0203] Sequence generation parameters.

[0204] It should be noted that the relevant parameters of the first pilot signal are pre-defined, which may include: the relevant parameters of the first pilot signal may be pre-defined by a protocol; or the relevant parameters of the first pilot signal may be pre-defined by network broadcast information.

[0205] Furthermore, relevant parameters of the first pilot signal may also be predefined in other ways.

[0206] It should be noted that when the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel, after the first device learns the relevant parameters of the first pilot signal, it can perform corresponding processing based on the relevant parameters of the first pilot signal, thereby improving system performance.

[0207] It should also be noted that, when at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel, after the first device obtains the relevant parameters of the first pilot signal, it can improve the adaptation of the receiver to the actually received control information so that the control information can be demodulated by the receiver.

[0208] In the following embodiments, relevant parameters of the first pilot signal are described in detail.

[0209] (1) Power parameter of the first pilot signal.

[0210] It should be noted that the "power" mentioned in the embodiments of the present application can also be directly expanded to "energy".

[0211] Through this method, when the power parameter of the first pilot signal is indicated by the first information, the first information can flexibly indicate the power allocation of the first pilot signal, so that the system can optimize the transmission power of the first pilot signal according to the wireless environment and improve the system performance; when the power parameter of the first pilot signal is pre-specified, signaling overhead can be saved.

[0212] In some embodiments, when at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of a control channel, the power parameter of the first pilot signal may include one or more of the following:

[0213] a ratio of the power of the first pilot signal sent on the first time-frequency resource to the total power on the second time-frequency resource;

[0214] a ratio of the power of control information of the control channel sent on the first time-frequency resource to the total power on the second time-frequency resource;

[0215] a ratio of the power of the first pilot signal sent on the first time-frequency resource to the power of the control information of the control channel sent on the first time-frequency resource; and

[0216] The ratio of the power of the control information of the control channel sent on the first time-frequency resource to the power of the first pilot signal sent on the first time-frequency resource.

[0217] Based on this, when at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel, the power parameter of the first pilot signal may be implemented in the following ways:

[0218] In a possible implementation, the power parameter of the first pilot signal may be a ratio of the power of the first pilot signal sent on the first time-frequency resource to the total power of the first pilot signal on the second time-frequency resource.

[0219] The first time-frequency resource is any one of at least some of the time-frequency resources.

[0220] It should be noted that, when the first time-frequency resource is any one of at least some of the time-frequency resources, the first time-frequency resource can be considered as a shared time-frequency resource.

[0221] It should also be noted that the total power on the second time-frequency resource may be the sum of the power of the first pilot signal sent on the second time-frequency resource and the power of the control information of the control channel sent on the second time-frequency resource.

[0222] It should also be noted that the second time-frequency resource can be any one of at least some of the time-frequency resources, in which case the second time-frequency resource can be considered a shared time-frequency resource; the second time-frequency resource may not be any one of at least some of the time-frequency resources, or in other words, the second time-frequency resource can be any one of the other time-frequency resources except at least some of the time-frequency resources, in which case the second time-frequency resource can be considered not a shared time-frequency resource.

[0223] In some embodiments, the second time-frequency resource may be any one of at least some of the time-frequency resources.

[0224] Furthermore, when the second time-frequency resource is any one of at least some of the time-frequency resources, the second time-frequency resource and the first time-frequency resource may be the same time-frequency resource or may not be the same time-frequency resource, and this embodiment of the present application does not limit this.

[0225] In other embodiments, the second time-frequency resource may be any one of other time-frequency resources except at least part of the time-frequency resources.

[0226] Exemplarily, when the ratio is a linear value, the candidate values ​​of the ratio may be one or more of the following values: {0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.15, 0.20, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9}.

[0227] Exemplarily, when the ratio is a dB value, the candidate values ​​of the ratio may be one or more of the following values: {-1dB, -2dB, -3dB, -4dB, -5dB, -6dB, -7dB, -8dB, -9dB, -10dB, -11dB, -12dB, -13dB, -14dB, -15dB, -16dB, -17dB, -18dB, -19dB, -20dB}.

[0228] It should be noted that the power parameter of the first pilot signal may also be the ratio of the total power on the second time-frequency resource to the power of the first pilot signal sent on the first time-frequency resource.

[0229] Furthermore, the power parameter of the first pilot signal is the ratio of the total power on the second time-frequency resource to the power sent by the first pilot signal on the first time-frequency resource, and the power parameter of the first pilot signal is the ratio of the power sent by the first pilot signal on the first time-frequency resource to the total power on the second time-frequency resource: when these two ratios are linear values, the candidate values ​​of the two ratios are reciprocals of each other (for example, a and 1 / a); when the two ratios are dB values, the candidate values ​​of the two ratios are opposites of each other (for example, a and -a).

[0230] It should be noted that, when the ratio is a linear value and the power parameter of the first pilot signal is indicated by the first information, the indication of the first information can be simplified.

[0231] It should also be noted that, when the ratio is a dB value and the power parameter of the first pilot signal is indicated by the first information, the first information can indicate a more subtle power difference.

[0232] Through this method, when the power parameter of the first pilot signal is indicated by the first information, the first information can directly indicate the proportion of the total power (such as the first information indicates the ratio of the power of the first pilot signal sent on the first time-frequency resource to the total power on the second time-frequency resource), thereby simplifying the calculation of the power parameter of the first pilot signal; when the power parameter of the first pilot signal is pre-specified, signaling overhead can be saved.

[0233] In another possible implementation, the power parameter of the first pilot signal may be a ratio of the power of control information of the control channel sent on the first time-frequency resource to the total power on the second time-frequency resource.

[0234] The first time-frequency resource is any one of at least some of the time-frequency resources.

[0235] It should be noted that, when the first time-frequency resource is any one of at least some of the time-frequency resources, the first time-frequency resource can be considered as a shared time-frequency resource.

[0236] It should also be noted that the total power on the second time-frequency resource may be the sum of the power of the first pilot signal sent on the second time-frequency resource and the power of the control information of the control channel sent on the second time-frequency resource.

[0237] It should also be noted that the second time-frequency resource can be any one of at least some of the time-frequency resources, in which case the second time-frequency resource can be considered a shared time-frequency resource; the second time-frequency resource may not be any one of at least some of the time-frequency resources, or in other words, the second time-frequency resource can be any one of the other time-frequency resources except at least some of the time-frequency resources, in which case the second time-frequency resource can be considered not a shared time-frequency resource.

[0238] In some embodiments, the second time-frequency resource may be any one of at least some of the time-frequency resources.

[0239] Furthermore, when the second time-frequency resource is any one of at least some of the time-frequency resources, the second time-frequency resource and the first time-frequency resource may be the same time-frequency resource or may not be the same time-frequency resource, and this embodiment of the present application does not limit this.

[0240] In other embodiments, the second time-frequency resource may be any one of other time-frequency resources except at least part of the time-frequency resources.

[0241] It should also be noted that, when the ratio is a linear value or a dB value, the candidate values ​​of the ratio can be understood by referring to the description in the aforementioned embodiment, and for the sake of brevity, they will not be repeated here.

[0242] It should also be noted that the power parameter of the first pilot signal may also be the ratio of the total power on the second time-frequency resource to the power of the control information of the control channel sent on the first time-frequency resource.

[0243] Furthermore, the power parameter of the first pilot signal is the ratio of the total power on the second time-frequency resource to the power of the control information of the control channel sent on the first time-frequency resource, and the power parameter of the first pilot signal is the ratio of the power of the control information of the control channel sent on the first time-frequency resource to the total power on the second time-frequency resource: when the two ratios are linear values, the candidate values ​​of the two ratios are reciprocals of each other; when the two ratios are dB values, the candidate values ​​of the two ratios are opposites of each other.

[0244] It should be noted that, when the ratio is a linear value and the power parameter of the first pilot signal is indicated by the first information, the indication of the first information can be simplified.

[0245] It should also be noted that, when the ratio is a dB value and the power parameter of the first pilot signal is indicated by the first information, the first information can indicate a more subtle power difference.

[0246] Through this method, when the power parameter of the first pilot signal is indicated by the first information, the first information can directly indicate the proportion of the total power, thereby simplifying the calculation of the power parameter of the first pilot signal; when the power parameter of the first pilot signal is pre-specified, signaling overhead can be saved.

[0247] In another possible implementation, the power parameter of the first pilot signal may be a ratio of the power of the first pilot signal sent on the first time-frequency resource to the power of the control information of the control channel sent on the first time-frequency resource.

[0248] The first time-frequency resource is any one of at least some of the time-frequency resources.

[0249] It should be noted that, when the first time-frequency resource is any one of at least some of the time-frequency resources, the first time-frequency resource can be considered as a shared time-frequency resource.

[0250] It should also be noted that, when the ratio is a linear value or a dB value, the candidate values ​​of the ratio can be understood by referring to the description in the aforementioned embodiment, and for the sake of brevity, they will not be repeated here.

[0251] It should also be noted that, when the ratio is a linear value and the power parameter of the first pilot signal is indicated by the first information, the indication of the first information can be simplified.

[0252] It should also be noted that, when the ratio is a dB value and the power parameter of the first pilot signal is indicated by the first information, the first information can indicate a more subtle power difference.

[0253] Through this method, when the power parameter of the first pilot signal is indicated by the first information, compared with the first information directly indicating the proportion of the total power, the first information can make the dynamic value range of the power parameter of the first pilot signal smaller by indicating the ratio of the power sent by the first pilot signal on the first time-frequency resource to the power sent by the control information of the control channel on the first time-frequency resource, thereby improving the granularity of the indication and reducing the overhead of the indication; when the power parameter of the first pilot signal is pre-specified, signaling overhead can be saved.

[0254] In another possible implementation, the power parameter of the first pilot signal may be a ratio of the power of control information of the control channel sent on the first time-frequency resource to the power of the first pilot signal sent on the first time-frequency resource.

[0255] The first time-frequency resource is any one of at least some of the time-frequency resources.

[0256] It should be noted that, when the first time-frequency resource is any one of at least some of the time-frequency resources, the first time-frequency resource can be considered as a shared time-frequency resource.

[0257] It should also be noted that when the ratio is a linear value and a dB value, the candidate values ​​of the ratio can be understood by referring to the description in the aforementioned embodiment. For the sake of brevity, they will not be repeated here.

[0258] It should also be noted that the power parameter of the first pilot signal is the ratio of the power of the control information of the control channel sent on the first time-frequency resource to the power of the first pilot signal sent on the first time-frequency resource, and the power parameter of the first pilot signal is the ratio of the power of the first pilot signal sent on the first time-frequency resource to the power of the control information of the control channel sent on the first time-frequency resource: when these two ratios are linear values, the candidate values ​​of the two ratios are reciprocals of each other; when the two ratios are dB values, the candidate values ​​of the two ratios are opposites of each other.

[0259] It should also be noted that, when the ratio is a linear value and the power parameter of the first pilot signal is indicated by the first information, the indication of the first information can be simplified.

[0260] It should also be noted that, when the ratio is a dB value and the power parameter of the first pilot signal is indicated by the first information, the first information can indicate a more subtle power difference.

[0261] Through this method, when the power parameter of the first pilot signal is indicated by the first information, compared with the first information directly indicating the proportion of total power, the first information can make the dynamic value range of the power parameter of the first pilot signal smaller by indicating the ratio of the power sent by the control information of the control channel on the first time-frequency resource to the power sent by the first pilot signal on the first time-frequency resource, thereby improving the granularity of the indication and reducing the overhead of the indication; when the power parameter of the first pilot signal is pre-specified, signaling overhead can be saved.

[0262] (2) The frequency domain position of the time-frequency resources occupied by the first pilot signal.

[0263] Through this method, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be flexibly changed, which can be more conducive to multi-user multiplexing and reduce pilot signal interference between multiple users.

[0264] In the embodiment of the present application, the frequency domain position of the time-frequency resource occupied by the first pilot signal may be implemented in the following ways:

[0265] In one possible implementation, the first information may indicate a frequency domain density of the time-frequency resources occupied by the first pilot signal; or the frequency domain density of the time-frequency resources occupied by the first pilot signal may be predefined. The frequency domain position of the time-frequency resources occupied by the first pilot signal may be determined based on the frequency domain density of the time-frequency resources occupied by the first pilot signal.

[0266] In the embodiment of the present application, the frequency domain density of the time-frequency resources occupied by the first pilot signal may include: the RE density of the time-frequency resources occupied by the first pilot signal, and / or the RB density of the time-frequency resources occupied by the first pilot signal.

[0267] When the frequency domain density of the time-frequency resources occupied by the first pilot signal is the RE density of the time-frequency resources occupied by the first pilot signal, the RE density of the time-frequency resources occupied by the first pilot signal may be the RE density of the time-frequency resources occupied by the first pilot signal within one RB. The RE density of the time-frequency resources occupied by the first pilot signal within one RB may be a fifth value, and the fifth value is mapped to the number of REs of the time-frequency resources occupied by the first pilot signal within one RB.

[0268] Furthermore, the mapping relationship may be a one-to-one mapping relationship or other mapping relationships, which is not limited in the embodiments of the present application.

[0269] In some embodiments, when the fifth value is less than or equal to 1, the number of REs of the time-frequency resources occupied by the first pilot signal within one RB range is the product of the fifth value and the total number of REs within the RB range.

[0270] For example, assuming that there are 12 REs (corresponding to 12 subcarriers) within an RB range, and the RE density of the time-frequency resources occupied by the first pilot signal within the RB range is 1 / 2 (that is, the fifth value is 1 / 2), then it can be obtained that the number of REs of the time-frequency resources occupied by the first pilot signal within the RB range is 12*1 / 2=6.

[0271] For example, assuming that there are 12 REs (corresponding to 12 subcarriers) within an RB range, and the RE density of the time-frequency resources occupied by the first pilot signal within the RB range is 1 (that is, the fifth value is 1), then it can be obtained that the number of REs of the time-frequency resources occupied by the first pilot signal within the RB range is 12.

[0272] In some other embodiments, when the fifth value is greater than 1, the number of REs of the time-frequency resources occupied by the first pilot signal within one RB range is equal to the fifth value.

[0273] For example, assuming that there are 12 REs (corresponding to 12 subcarriers) within an RB range, and the RE density of the time-frequency resources occupied by the first pilot signal within the RB range is 6 (that is, the fifth value is 6), then it can be obtained that the number of REs of the time-frequency resources occupied by the first pilot signal within the RB range is 6.

[0274] Through this method, when the frequency domain density of the time-frequency resources occupied by the first pilot signal is the RE density of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the RE density of the time-frequency resources occupied by the first pilot signal according to the wireless environment, so as to better match the wireless channel and improve system performance.

[0275] When the frequency domain density of the time-frequency resources occupied by the first pilot signal is the RB density of the time-frequency resources occupied by the first pilot signal, the RB density of the time-frequency resources occupied by the first pilot signal may be a sixth value. Assuming that one RB out of every X RBs is used to transmit the first pilot signal, there is a mapping relationship between the sixth value and the value of X, where X is a positive integer.

[0276] Furthermore, the mapping relationship may be a one-to-one mapping relationship or other mapping relationships, which is not limited in the embodiments of the present application.

[0277] In some embodiments, when the sixth value is less than or equal to 1, the value of X is the reciprocal of the sixth value.

[0278] Exemplarily, assuming that the RB density of the time-frequency resources occupied by the first pilot signal is 0.5 (ie, the sixth value is 0.5), the value of X is 1 / 0.5=2, that is, one RB in every two RBs is used to transmit the first pilot signal.

[0279] Exemplarily, assuming that the RB density of the time-frequency resources occupied by the first pilot signal is 1 (ie, the sixth value is 1), the value of X is 1, that is, each RB is used to transmit the first pilot signal.

[0280] In some other embodiments, when the sixth value is greater than 1, the value of X is equal to the sixth value.

[0281] Exemplarily, assuming that the RB density of the time-frequency resources occupied by the first pilot signal is 2 (ie, the sixth value is 2), the value of X is 2, that is, one RB in every two RBs is used to transmit the first pilot signal.

[0282] It should be noted that, at least part of REs in an RB of time-frequency resources occupied by the first pilot signal are used to transmit the first pilot signal.

[0283] Furthermore, the at least part of the REs may be one RE in an RB, or multiple REs in an RB (not all REs in an RB), or all REs in an RB, which is not limited in the embodiments of the present application.

[0284] Through this method, when the frequency domain density of the time-frequency resources occupied by the first pilot signal is the RB density of the time-frequency resources occupied by the first pilot signal, the first device can change the RB density of the time-frequency resources occupied by the first pilot signal with a larger granularity according to the wireless environment, which is more flexible and more conducive to multi-user multiplexing, reducing pilot signal interference between multiple users.

[0285] In another possible implementation, the first information may indicate a frequency domain offset value of the time-frequency resource occupied by the first pilot signal; or the frequency domain offset value of the time-frequency resource occupied by the first pilot signal is predefined. The frequency domain position of the time-frequency resource occupied by the first pilot signal may be determined based on the frequency domain offset value of the time-frequency resource occupied by the first pilot signal.

[0286] In this embodiment of the present application, the frequency domain offset value of the time-frequency resources occupied by the first pilot signal may include: the RE offset value of the time-frequency resources occupied by the first pilot signal, and / or the RB offset value of the time-frequency resources occupied by the first pilot signal.

[0287] When the frequency domain offset value of the time-frequency resources occupied by the first pilot signal is the RE offset value of the time-frequency resources occupied by the first pilot signal, the RE of the time-frequency resources occupied by the first pilot signal within the RB range can be obtained based on the RE offset value of the time-frequency resources occupied by the first pilot signal and the number of REs of the time-frequency resources occupied by the first pilot signal within the RB range.

[0288] For example, assuming that there are 12 REs (corresponding to 12 subcarriers) within an RB range, the RE offset value of the time-frequency resources occupied by the first pilot signal is offset_RE, and the number of REs of the time-frequency resources occupied by the first pilot signal within the RB range is Y, then the identifiers (or positions, similar to other places, and no further description is given) of the REs of the time-frequency resources occupied by the first pilot signal within the RB range are: offset_RE, offset_RE+12 / Y, offset_RE+2*12 / Y, offset_RE+3*12 / Y, etc.; where Y is a positive integer.

[0289] Through this method, when the frequency domain offset value of the time-frequency resources occupied by the first pilot signal is the RE offset value of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the RE (or subcarrier) allocation of the time-frequency resources occupied by the first pilot signal, thereby being more conducive to multi-user multiplexing and reducing pilot signal interference between multiple users.

[0290] When the frequency domain offset value of the time-frequency resources occupied by the first pilot signal is the RB offset value of the time-frequency resources occupied by the first pilot signal, the RB of the time-frequency resources occupied by the first pilot signal can be obtained according to the RB offset value of the time-frequency resources occupied by the first pilot signal and the value of X (one RB in every X RBs is used to transmit the first pilot signal).

[0291] For example, assuming that the RB offset value of the time-frequency resource occupied by the first pilot signal is offset_RB, the identifiers (or positions, which are similar in other places and will not be repeated here) of the RBs of the time-frequency resources occupied by the first pilot signal are: offset_RB, offset_RB+X, offset_RB+2*X, offset_RB+3*X, and so on.

[0292] Through this method, when the frequency domain offset value of the time-frequency resources occupied by the first pilot signal is the RB offset value of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the RB allocation of the time-frequency resources occupied by the first pilot signal, thereby being more conducive to multi-user multiplexing and reducing pilot signal interference between multiple users.

[0293] In another possible implementation, the first information may indicate a frequency domain pattern of the time-frequency resources occupied by the first pilot signal; or the frequency domain pattern of the time-frequency resources occupied by the first pilot signal is predefined. The frequency domain position of the time-frequency resources occupied by the first pilot signal may be determined based on the frequency domain pattern of the time-frequency resources occupied by the first pilot signal.

[0294] In this embodiment of the present application, the frequency domain pattern of the time-frequency resources occupied by the first pilot signal may include: the RE pattern of the time-frequency resources occupied by the first pilot signal, and / or the RB pattern of the time-frequency resources occupied by the first pilot signal.

[0295] When the frequency domain pattern of the time-frequency resources occupied by the first pilot signal is the RE pattern of the time-frequency resources occupied by the first pilot signal, the RE pattern can be determined by pre-regulation and / or network device configuration. The RE pattern can identify the time-frequency resources occupied by the first pilot signal.

[0296] Exemplarily, Figures 10 and 11 may be RE patterns determined by pre-regulation and / or network device configuration, and the RE pattern of the time-frequency resources occupied by the first pilot signal may be one of the RE patterns shown in Figure 10 and the RE patterns shown in Figure 11.

[0297] For example, assuming that the RE pattern of the time-frequency resources occupied by the first pilot signal is the RE pattern shown in Figure 10, the identifiers of the REs within an RB range of the time-frequency resources occupied by the first pilot signal are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 respectively.

[0298] Exemplarily, assuming that the RE pattern of the time-frequency resources occupied by the first pilot signal is the RE pattern shown in Figure 11, the identifiers of the REs within an RB range of the time-frequency resources occupied by the first pilot signal are: 1, 3, 5, 7, 9, 11 respectively.

[0299] It should be noted that the RE pattern of the time-frequency resources occupied by the first pilot signal can be determined to be the RE pattern shown in Figure 10 or the RE pattern shown in Figure 11 through the indication of the first information; or, it can be pre-specified that the RE pattern of the time-frequency resources occupied by the first pilot signal is the RE pattern shown in Figure 10 or the RE pattern shown in Figure 11. At this time, when the first information indicates the first pilot signal, it can implicitly indicate the RE pattern of the time-frequency resources occupied by the first pilot signal.

[0300] It should be noted that the examples shown in Figures 10 and 11 are all based on one symbol. It should be understood that the examples shown based on Figures 10 and 11 can also be directly extended to multiple symbols, and this embodiment of the present application will not be further described.

[0301] Through this method, when the frequency domain pattern of the time-frequency resources occupied by the first pilot signal is the RE pattern of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the RE (or subcarrier) allocation of the time-frequency resources occupied by the first pilot signal, thereby being more conducive to multi-user multiplexing and reducing pilot signal interference between multiple users. In addition, the RE pattern of the time-frequency resources occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration, thereby reducing signaling overhead.

[0302] When the frequency domain pattern of the time-frequency resources occupied by the first pilot signal is an RB pattern of the time-frequency resources occupied by the first pilot signal, the RB pattern may be determined by pre-specification and / or network device configuration. The RB pattern may identify the time-frequency resources occupied by the first pilot signal.

[0303] It should also be noted that the exemplary description of the RB pattern of the time-frequency resources occupied by the first pilot signal can be understood by referring to the description in the aforementioned embodiment, and for the sake of brevity, it will not be repeated here.

[0304] Through this method, when the frequency domain pattern of the time-frequency resources occupied by the first pilot signal is the RB pattern of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the RB allocation of the time-frequency resources occupied by the first pilot signal, thereby facilitating multi-user multiplexing and reducing pilot signal interference between multiple users. In addition, the RB pattern of the time-frequency resources occupied by the first pilot signal can be determined by pre-determining and / or network device configuration, thereby reducing signaling overhead.

[0305] Based on the foregoing possible implementations, the frequency domain position of the time-frequency resource occupied by the first pilot signal may be determined according to one or more of the following parameters indicated by the first information:

[0306] Frequency domain density of time-frequency resources occupied by the first pilot signal;

[0307] The frequency domain offset value of the time-frequency resource occupied by the first pilot signal; and

[0308] The frequency domain pattern of the time-frequency resources occupied by the first pilot signal.

[0309] Exemplarily, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the frequency domain density of the time-frequency resource occupied by the first pilot signal. For example, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RE density of the time-frequency resource occupied by the first pilot signal, in which case the RE offset value of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration; and / or, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RB density of the time-frequency resource occupied by the first pilot signal, in which case the RB offset value of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration.

[0310] Exemplarily, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the frequency domain offset value of the time-frequency resource occupied by the first pilot signal. For example, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RE offset value of the time-frequency resource occupied by the first pilot signal, in which case the RE density of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration; and / or, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RB offset value of the time-frequency resource occupied by the first pilot signal, in which case the RB density of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration.

[0311] Exemplarily, the frequency domain position of the time-frequency resource occupied by the first pilot signal may be determined based on the frequency domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the frequency domain position of the time-frequency resource occupied by the first pilot signal may be determined based on the RE pattern of the time-frequency resource occupied by the first pilot signal; and / or the frequency domain position of the time-frequency resource occupied by the first pilot signal may be determined based on the RB pattern of the time-frequency resource occupied by the first pilot signal.

[0312] Exemplarily, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the frequency domain density and frequency domain offset value of the time-frequency resource occupied by the first pilot signal. For example, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RE density and / or RB density of the time-frequency resource occupied by the first pilot signal, and the RE offset value and / or RB offset value of the time-frequency resource occupied by the first pilot signal.

[0313] Exemplarily, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the frequency domain density and frequency domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RE density and / or RB density of the time-frequency resource occupied by the first pilot signal, as well as the RE pattern and / or RB pattern of the time-frequency resource occupied by the first pilot signal.

[0314] Exemplarily, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the frequency domain offset value and frequency domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RE offset value and / or RB offset value of the time-frequency resource occupied by the first pilot signal, and the RE pattern and / or RB pattern of the time-frequency resource occupied by the first pilot signal.

[0315] Exemplarily, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the frequency domain density, frequency domain offset value, and frequency domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the frequency domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the RE density and / or RB density of the time-frequency resource occupied by the first pilot signal, the RE offset value and / or RB offset value of the time-frequency resource occupied by the first pilot signal, and the RE pattern and / or RB pattern of the time-frequency resource occupied by the first pilot signal.

[0316] In the embodiment of the present application, when the first information is used to indicate the frequency domain position of the time-frequency resource occupied by the first pilot signal, there are the following two possible implementation methods.

[0317] In a possible implementation manner, the first information may indicate the frequency domain position of the time-frequency resource occupied by the first pilot signal through a first bitmap.

[0318] Exemplarily, the first information may indicate, through a first bitmap, an RB used to transmit the first pilot signal and / or REs within an RB used to transmit the first pilot signal. For example, the first information may indicate, through a first bitmap with a length of 12 bits or 16 bits, REs within an RB used to transmit the first pilot signal; wherein, REs corresponding to values ​​of 1 in the first bitmap are used to transmit the first pilot signal.

[0319] Through this method, the first information can indicate the RB used to transmit the first pilot signal and / or the RE used to transmit the first pilot signal within an RB range through a first bit map, thereby improving the flexibility of the first information indicating the frequency domain position of the time-frequency resources occupied by the first pilot signal.

[0320] In another possible implementation manner, the first information may indicate the frequency domain position of the time-frequency resource occupied by the first pilot signal through an identifier of the frequency domain resource.

[0321] It should be noted that the way in which the first information indicates the frequency domain position of the time-frequency resource occupied by the first pilot signal through the identifier of the frequency domain resource is a way to directly indicate the frequency domain position of the time-frequency resource occupied by the first pilot signal.

[0322] Exemplarily, the first information may indicate the RE used to transmit the first pilot signal within an RB range through an identifier of the RE; and / or, the first information may indicate the RB used to transmit the first pilot signal through an identifier of the RB.

[0323] Through this method, the first information directly indicates the frequency domain position of the time-frequency resource occupied by the first pilot signal through the identification of the frequency domain resource, thereby improving the flexibility of the first information when indicating the frequency domain position of the time-frequency resource occupied by the first pilot signal.

[0324] (3) The time domain position of the time-frequency resources occupied by the first pilot signal.

[0325] Through this method, the time domain position of the time-frequency resource occupied by the first pilot signal can be flexibly changed, thereby achieving a better balance between the total power of the pilot signal and the channel estimation performance, thereby improving system performance.

[0326] In the embodiment of the present application, the time domain position of the time-frequency resource occupied by the first pilot signal may be implemented in the following ways:

[0327] In one possible implementation, the first information may indicate a time-domain density of the time-frequency resources occupied by the first pilot signal; or the time-domain density of the time-frequency resources occupied by the first pilot signal is predefined. The time-domain position of the time-frequency resources occupied by the first pilot signal may be determined based on the time-domain density of the time-frequency resources occupied by the first pilot signal.

[0328] In the embodiment of the present application, the time domain density of the time-frequency resources occupied by the first pilot signal may include: the symbol density of the time-frequency resources occupied by the first pilot signal, and / or the time slot density of the time-frequency resources occupied by the first pilot signal.

[0329] When the time domain density of the time-frequency resources occupied by the first pilot signal is the symbol density of the time-frequency resources occupied by the first pilot signal, the symbol density of the time-frequency resources occupied by the first pilot signal may be the symbol density of the time-frequency resources occupied by the first pilot signal within a time slot. The symbol density of the time-frequency resources occupied by the first pilot signal within a time slot may be a seventh value, and there is a mapping relationship between the seventh value and the number of symbols of the time-frequency resources occupied by the first pilot signal within a time slot.

[0330] Furthermore, the mapping relationship may be a one-to-one mapping relationship or other mapping relationships, which is not limited in the embodiments of the present application.

[0331] In some embodiments, when the seventh value is less than or equal to 1, the number of symbols of the time-frequency resources occupied by the first pilot signal within a time slot is the product of the seventh value and the total number of symbols within the time slot.

[0332] For example, assuming that there are 14 symbols in a time slot, the symbol density of the time-frequency resources occupied by the first pilot signal in the time slot is 1 / 2 (that is, the seventh value is 1 / 2), then it can be obtained that the number of symbols of the time-frequency resources occupied by the first pilot signal in the time slot is 14*1 / 2=7.

[0333] For example, assuming that there are 14 symbols in a time slot range, and the symbol density of the time-frequency resources occupied by the first pilot signal in the time slot range is 1 (that is, the seventh value is 1), it can be obtained that the number of symbols of the time-frequency resources occupied by the first pilot signal in the time slot range is 14.

[0334] In some other embodiments, when the seventh value is greater than 1, the number of symbols of the time-frequency resources occupied by the first pilot signal within a time slot is equal to the seventh value.

[0335] For example, assuming that there are 14 symbols in a time slot range, and the symbol density of the time-frequency resources occupied by the first pilot signal in the time slot range is 6 (that is, the seventh value is 6), it can be obtained that the number of symbols of the time-frequency resources occupied by the first pilot signal in the time slot range is 6.

[0336] Through this method, when the time domain density of the first pilot signal occupying the time-frequency resources is the symbol density of the first pilot signal occupying the time-frequency resources, the first device can flexibly change the symbol density of the first pilot signal occupying the time-frequency resources according to the wireless environment, so as to better match the current channel and improve system performance.

[0337] When the time domain density of the time-frequency resources occupied by the first pilot signal is the time slot density of the time-frequency resources occupied by the first pilot signal, the time slot density of the time-frequency resources occupied by the first pilot signal may be an eighth value. Assuming that one time slot in every P time slots is used to transmit the first pilot signal, there is a mapping relationship between the eighth value and the value of P; where P is a positive integer.

[0338] Furthermore, the mapping relationship may be a one-to-one mapping relationship or other mapping relationships, which is not limited in the embodiments of the present application.

[0339] In some embodiments, when the eighth value is less than or equal to 1, the value of P is the reciprocal of the eighth value.

[0340] Exemplarily, assuming that the time slot density of the time-frequency resource occupied by the first pilot signal is 0.5 (ie, the eighth value is 0.5), the value of P is 1 / 0.5=2, that is, one time slot in every two time slots is used to transmit the first pilot signal.

[0341] Exemplarily, assuming that the time slot density of the time-frequency resource occupied by the first pilot signal is 1 (ie, the eighth value is 1), the value of P is 1, that is, each time slot is used to transmit the first pilot signal.

[0342] In other embodiments, when the eighth value is greater than 1, the value of P is equal to the eighth value.

[0343] Exemplarily, assuming that the time slot density of the time-frequency resource occupied by the first pilot signal is 2 (ie, the eighth value is 2), the value of P is 2, that is, one time slot in every two time slots is used to transmit the first pilot signal.

[0344] It should be noted that the first pilot signal occupies at least part of the symbols in a time slot of the time-frequency resource for transmitting the first pilot signal.

[0345] Furthermore, the at least partial symbol may be a symbol in a time slot, or multiple symbols in a time slot (not all symbols in a time slot), or all symbols in a time slot, which is not limited in the embodiments of the present application.

[0346] Through this method, when the time domain density of the time-frequency resources occupied by the first pilot signal is the time slot density of the time-frequency resources occupied by the first pilot signal, the first device can change the time slot density of the time-frequency resources occupied by the first pilot signal with a larger granularity according to the wireless environment, which is more flexible and more conducive to multi-user multiplexing, reducing pilot signal interference between multiple users.

[0347] In another possible implementation, the first information may indicate a time domain offset value of the time-frequency resource occupied by the first pilot signal; or the time domain offset value of the time-frequency resource occupied by the first pilot signal may be predefined. The time domain position of the time-frequency resource occupied by the first pilot signal may be determined based on the time domain offset value of the time-frequency resource occupied by the first pilot signal.

[0348] In an embodiment of the present application, the time domain offset value of the time-frequency resource occupied by the first pilot signal may include: the symbol offset value of the time-frequency resource occupied by the first pilot signal, and / or the time slot offset value of the time-frequency resource occupied by the first pilot signal.

[0349] When the time domain offset value of the time-frequency resources occupied by the first pilot signal is the symbol offset value of the time-frequency resources occupied by the first pilot signal, the symbol of the time-frequency resources occupied by the first pilot signal within the time slot can be obtained based on the symbol offset value of the time-frequency resources occupied by the first pilot signal and the number of symbols of the time-frequency resources occupied by the first pilot signal within the time slot.

[0350] For example, assuming that there are 14 symbols within a time slot, the symbol offset value of the time-frequency resources occupied by the first pilot signal is offset_symbol, and the number of symbols of the time-frequency resources occupied by the first pilot signal within the time slot is Q, then the identifiers of the symbols of the time-frequency resources occupied by the first pilot signal within the time slot are: offset_symbol, offset_symbol+14 / Q, offset_symbol+2*14 / Q, offset_symbol+3*14 / Q, etc.; where Q is a positive integer.

[0351] Through this method, when the time domain offset value of the time-frequency resources occupied by the first pilot signal is the symbol offset value of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the symbol allocation of the time-frequency resources occupied by the first pilot signal, so as to better match the current channel, be more conducive to multi-user multiplexing, and reduce pilot signal interference between multiple users.

[0352] When the time domain offset value of the time-frequency resources occupied by the first pilot signal is the time slot offset value of the time-frequency resources occupied by the first pilot signal, the time slot of the time-frequency resources occupied by the first pilot signal can be obtained according to the time slot offset value of the time-frequency resources occupied by the first pilot signal and the value of P (one time slot in every P time slots is used to transmit the first pilot signal).

[0353] Exemplarily, assuming that the time slot offset value of the time-frequency resource occupied by the first pilot signal is offset_slot, the identifiers of the time slots of the time-frequency resource occupied by the first pilot signal are offset_slot, offset_slot+P, offset_slot+2*P, offset_slot+3*P, and so on.

[0354] Through this method, when the time domain offset value of the time-frequency resources occupied by the first pilot signal is the time slot offset value of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the time slot allocation of the time-frequency resources occupied by the first pilot signal, thereby better matching the wireless channel, being more conducive to multi-user multiplexing, and reducing pilot signal interference between multiple users.

[0355] In another possible implementation, the first information may indicate a time domain pattern of the time-frequency resources occupied by the first pilot signal; or the time domain pattern of the time-frequency resources occupied by the first pilot signal is predefined. The time domain position of the time-frequency resources occupied by the first pilot signal may be determined based on the time domain pattern of the time-frequency resources occupied by the first pilot signal.

[0356] In the embodiment of the present application, the time domain pattern of the time-frequency resources occupied by the first pilot signal may include: the symbol pattern of the time-frequency resources occupied by the first pilot signal, and / or the time slot pattern of the time-frequency resources occupied by the first pilot signal.

[0357] When the time domain pattern of the time-frequency resources occupied by the first pilot signal is a symbol pattern of the time-frequency resources occupied by the first pilot signal, the symbol pattern may be determined by pre-regulation and / or network device configuration. The symbol pattern may identify the time-frequency resources occupied by the first pilot signal.

[0358] It should also be noted that the exemplary description of the symbol pattern of the first pilot signal occupying the time-frequency resources can be understood by referring to the description in the aforementioned embodiment, and for the sake of brevity, it will not be repeated here.

[0359] Through this method, when the time-domain pattern of the time-frequency resources occupied by the first pilot signal is the symbol pattern of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the symbol allocation of the time-frequency resources occupied by the first pilot signal, thereby facilitating multi-user multiplexing and reducing pilot signal interference between multiple users. In addition, the symbol pattern of the time-frequency resources occupied by the first pilot signal can be determined by pre-determining and / or network device configuration, thereby reducing signaling overhead.

[0360] When the time domain pattern of the time-frequency resources occupied by the first pilot signal is a time slot pattern of the time-frequency resources occupied by the first pilot signal, the time slot pattern may be determined by pre-regulation and / or network device configuration. The time slot pattern may identify the time-frequency resources occupied by the first pilot signal.

[0361] It should also be noted that the exemplary description of the time slot pattern of the first pilot signal occupying the time-frequency resources can be understood by referring to the description in the aforementioned embodiment, and for the sake of brevity, it will not be repeated here.

[0362] Through this method, when the time domain pattern of the time-frequency resources occupied by the first pilot signal is the time slot pattern of the time-frequency resources occupied by the first pilot signal, the first device can flexibly change the time slot allocation of the time-frequency resources occupied by the first pilot signal, thereby facilitating multi-user multiplexing and reducing pilot signal interference between multiple users. In addition, the time slot pattern of the time-frequency resources occupied by the first pilot signal can be determined by pre-determining and / or network device configuration, thereby reducing signaling overhead.

[0363] Based on the foregoing possible implementations, the time-domain position of the time-frequency resource occupied by the first pilot signal may be determined according to one or more of the following parameters indicated by the first information:

[0364] time domain density of time-frequency resources occupied by the first pilot signal;

[0365] The time domain offset value of the time-frequency resource occupied by the first pilot signal; and

[0366] The time domain pattern of the time-frequency resources occupied by the first pilot signal.

[0367] Exemplarily, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time domain density of the time-frequency resource occupied by the first pilot signal. For example, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the symbol density of the time-frequency resource occupied by the first pilot signal, in which case the symbol offset value of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration; and / or the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time slot density of the time-frequency resource occupied by the first pilot signal, in which case the time slot offset value of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration.

[0368] Exemplarily, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time domain offset value of the time-frequency resource occupied by the first pilot signal. For example, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the symbol offset value of the time-frequency resource occupied by the first pilot signal, in which case the symbol density of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration; and / or, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time slot offset value of the time-frequency resource occupied by the first pilot signal, in which case the time slot density of the time-frequency resource occupied by the first pilot signal can be determined by pre-regulation and / or network device configuration.

[0369] Exemplarily, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the symbol pattern of the time-frequency resource occupied by the first pilot signal; and / or the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time slot pattern of the time-frequency resource occupied by the first pilot signal.

[0370] Exemplarily, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time domain density and time domain offset value of the time-frequency resource occupied by the first pilot signal. For example, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the symbol density and / or time slot density of the time-frequency resource occupied by the first pilot signal, and the symbol offset value and / or time slot offset value of the time-frequency resource occupied by the first pilot signal.

[0371] Exemplarily, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time domain density and time domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the symbol density and / or time slot density of the time-frequency resource occupied by the first pilot signal, as well as the symbol pattern and / or time slot pattern of the time-frequency resource occupied by the first pilot signal.

[0372] Exemplarily, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time domain offset value and the time domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the symbol offset value and / or time slot offset value of the time-frequency resource occupied by the first pilot signal, and the symbol pattern and / or time slot pattern of the time-frequency resource occupied by the first pilot signal.

[0373] Exemplarily, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the time domain density, time domain offset value, and time domain pattern of the time-frequency resource occupied by the first pilot signal. For example, the time domain position of the time-frequency resource occupied by the first pilot signal can be determined based on the symbol density and / or time slot density of the time-frequency resource occupied by the first pilot signal, the symbol offset value and / or time slot offset value of the time-frequency resource occupied by the first pilot signal, and the symbol pattern and / or time slot pattern of the time-frequency resource occupied by the first pilot signal.

[0374] In the embodiment of the present application, when the first information is used to indicate the time domain position of the time-frequency resource occupied by the first pilot signal, there are the following two possible implementation methods.

[0375] In a possible implementation, the first information indicates the time domain position of the time-frequency resources occupied by the first pilot signal through a second bit map.

[0376] Exemplarily, the first information may indicate, via a second bitmap, a time slot for transmitting the first pilot signal and / or a symbol within a time slot for transmitting the first pilot signal. For example, the first information may indicate, via a second bitmap having a length of 14 bits, a symbol within a time slot for transmitting the first pilot signal; wherein a symbol corresponding to a value of 1 in the second bitmap is used to transmit the first pilot signal.

[0377] Through this method, the first information can indicate the time slot used to transmit the first pilot signal and / or the symbol used to transmit the first pilot signal within a time slot through the second bit map, thereby improving the flexibility of the first information when indicating the time domain position of the time-frequency resources occupied by the first pilot signal.

[0378] In another possible implementation manner, the first information may indicate the time domain position of the time-frequency resource occupied by the first pilot signal through an identifier of the time domain resource.

[0379] It should be noted that the way in which the first information indicates the time domain position of the time-frequency resource occupied by the first pilot signal through the identifier of the time domain resource is a way to directly indicate the time domain position of the time-frequency resource occupied by the first pilot signal.

[0380] Exemplarily, the first information may indicate a symbol used to transmit the first pilot signal in a time slot through a symbol identifier; and / or the first information may indicate a time slot used to transmit the first pilot signal through a time slot identifier.

[0381] Through this method, the first information directly indicates the time domain position of the time-frequency resource occupied by the first pilot signal through the identifier of the time domain resource, thereby improving the flexibility of the first information in indicating the time domain position of the time-frequency resource occupied by the first pilot signal.

[0382] (4) A method for generating a sequence of a first pilot signal.

[0383] In the embodiment of the present application, the sequence generation method of the first pilot signal may be a generation method of different types of sequences.

[0384] Illustratively, the type of sequence may be a Gold sequence, a ZC sequence, an M sequence, etc., which is not limited in the embodiments of the present application.

[0385] By using this method, the sequences between different users can be optimized based on the sequence generation method of the first pilot signal, interference between sequences can be reduced, and system performance can be improved.

[0386] (5) Sequence generation parameters of the first pilot signal.

[0387] Exemplarily, the sequence generation parameters of the first pilot signal may include one or more groups of sequence generation parameters, wherein each group of sequence generation parameters may include one or more sequence generation parameters.

[0388] Exemplarily, the second device may select the sequence generation parameter of the first pilot signal through DCI signaling.

[0389] Through this method, the second device can select the sequence generation parameter of the first pilot signal through DCI signaling, thereby improving flexibility.

[0390] It should be noted that, when there are multiple sequence generation parameters for the first pilot signal, different sequence generation parameters may correspond to different ports of the first pilot signal.

[0391] In this embodiment of the present application, the sequence generation parameters of the first pilot signal may include one or more of the following:

[0392] An identifier of a time domain resource in the time-frequency resources occupied by the first pilot signal;

[0393] an identifier of the system frame number (SNF) in which the first pilot signal resides;

[0394] an identifier of the cell where the first pilot signal is located;

[0395] an identifier of the carrier where the first pilot signal is located;

[0396] an identifier of a port of the first pilot signal;

[0397] a scrambling parameter of the first pilot signal;

[0398] an identification of a control channel; and,

[0399] Other parameters for network device configuration.

[0400] It should be noted that the identifier of the time domain resources occupied by the first pilot signal in the time-frequency resources may include one or more of the following: an identifier of the time slot occupied by the first pilot signal in the time-frequency resources (or called the position, similar to other places, no longer detailed description is required); an identifier of the symbol occupied by the first pilot signal in the time-frequency resources (or called the position, similar to other places, no longer detailed description is required); and an identifier of the symbol occupied by the first pilot signal in the time-frequency resources within a time slot or a subframe (Sub-Frame) or a frame (Frame).

[0401] Exemplarily, the identifier of the cell where the first pilot signal is located may be an identifier of the physical layer cell where the first pilot signal is located.

[0402] Exemplarily, the carrier where the first pilot signal is located may be a component carrier in carrier aggregation.

[0403] It should be noted that the sequence corresponding to port i of the first pilot signal can be generated based on the port identifier i. Furthermore, the port identifier of the first pilot signal can be the identifier of some ports of the first pilot signal, or the identifier of each port of the first pilot signal, which is not limited in this embodiment of the present application.

[0404] It should also be noted that the identifier of the control channel can be the group identifier corresponding to the CORESET (for example, the CORESET pool index in the NR system).

[0405] By using this method, the sequences between different users can be optimized based on the sequence generation parameters of the first pilot signal, interference between sequences can be reduced, and system performance can be improved.

[0406] In an embodiment of the present application, on the one hand, obtaining the relevant parameters of the first pilot signal based on the method indicated by the first information can improve the flexibility of obtaining the relevant parameters of the first pilot signal; on the other hand, obtaining the relevant parameters of the first pilot signal based on a pre-defined method can reduce signaling overhead.

[0407] In some embodiments, the first pilot signal is not used for one or more of the following:

[0408] transmission corresponding to a control resource set identified as a first value;

[0409] a transmission corresponding to a search space identified as a second value;

[0410] transmission corresponding to a control resource set corresponding to a search space identified as a third value;

[0411] receiving a transmission corresponding to the search space for system information block 1 (Search Space for SIB1 Reception);

[0412] receiving a transmission corresponding to a control resource set corresponding to a search space of system information block 1;

[0413] Receive transmissions corresponding to the search space for other system information (Search Space Other System Information), where other system information is system information other than system information block 1;

[0414] Receive transmission corresponding to the control resource set corresponding to the search space of other system messages;

[0415] Transmission corresponding to the search space for paging;

[0416] Transmission corresponding to the control resource set corresponding to the paging search space;

[0417] Transmission corresponding to the search space for random access;

[0418] transmission corresponding to the control resource set corresponding to the random access search space; and

[0419] Transmission corresponding to the common search space (Common Search Space).

[0420] Exemplarily, the first value may be 0. The first pilot signal may not be used to control transmission corresponding to resource set 0.

[0421] Exemplarily, the search space may also be referred to as a search space set, and the search space and the search space set refer to the same concept in the protocol.

[0422] Exemplarily, the second value may be 0. The first pilot signal may not be used for transmission corresponding to search space 0.

[0423] Exemplarily, the third value may be 0. The first pilot signal may not be used for transmission corresponding to the control resource set corresponding to search space 0.

[0424] Through this method, when the first pilot signal is not used for one or more of the above items, the above one or more items still use the system default or pre-defined pilot signal, thereby avoiding the ambiguity stage when switching between different pilot signals and improving system stability.

[0425] It should be noted that in the embodiment of the present application, the first device may use the first pilot signal to receive the corresponding control channel based on the first information. For example, the first device may receive two first information, one of which corresponds to one control resource set and the other corresponds to another control resource set.

[0426] In some embodiments, when the number of repeated transmissions of the control channel includes at least two, the number of first pilot signals includes at least two;

[0427] The at least two first pilot signals maintain the same configuration in one or more of the following parameters:

[0428] At least part of the time-frequency resources occupied by each of the at least two first pilot signals is used to transmit control information of the control channel;

[0429] frequency domain density of time-frequency resources occupied by each of the at least two first pilot signals;

[0430] time domain density of time-frequency resources occupied by each of the at least two first pilot signals; and

[0431] power parameters of at least two first pilot signals.

[0432] It should be noted that the number of repeated transmissions of the control channel is associated with the number of first pilot signals. For example, assuming that the control channel is repeatedly transmitted twice, the first transmission of the control channel corresponds to one first pilot signal, and the second transmission of the control channel corresponds to another first pilot signal.

[0433] It should also be noted that at least part of the time-frequency resources occupied by at least two first pilot signals are used to transmit control information. It can be understood that at least two first pilot signals and control information use one or more of the same time-frequency resources (not all time-frequency resources); or, all time-frequency resources occupied by at least two first pilot signals are used for control information at the same time.

[0434] Furthermore, in some embodiments, the time-frequency resources occupied by at least one of the at least two first pilot signals are not used to transmit control information of the control channel, and at least part of the time-frequency resources occupied by at least another first pilot signal are used to transmit control information of the control channel.

[0435] Through this method, when the performance of at least another one of the at least two first pilot signals (corresponding to the non-orthogonal first pilot signal) is poor, the control channel of at least one of the at least two first pilot signals (corresponding to the orthogonal first pilot signal) can also be used for separate demodulation.

[0436] In some embodiments, the second pilot signal of the data channel scheduled by the first downlink control information DCI transmitted through the control channel maintains the same configuration as the first pilot signal in terms of one or more of the following parameters:

[0437] At least part of the time-frequency resources occupied by the second pilot signal is used to transmit data information of the data channel, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel;

[0438] The time-frequency resources occupied by the second pilot signal are not used to transmit data information of the data channel, and the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel;

[0439] power parameters of the second pilot signal and the first pilot signal;

[0440] Sequence generation methods for the second pilot signal and the first pilot signal;

[0441] frequency domain densities of time-frequency resources occupied by the second pilot signal and the first pilot signal; and

[0442] The time domain density of the time-frequency resources occupied by the second pilot signal and the first pilot signal respectively.

[0443] Exemplarily, the data channel may be a physical downlink shared channel (PDSCH).

[0444] Exemplarily, the data channel may be a physical sidelink shared channel (PSSCH).

[0445] It should be noted that the first pilot signal and the second pilot signal maintain the same configuration in one or more parameters. It can be understood that the first pilot signal and the second pilot signal can be configured with the same one or more parameters; or, the first pilot signal is configured with one or more parameters, and the second pilot signal is not configured with the one or more parameters, and directly adopts the one or more parameters configured by the first pilot signal (i.e., shared configuration); or, the second pilot signal is configured with one or more parameters, and the first pilot signal is not configured with the one or more parameters, and directly adopts the one or more parameters configured by the second pilot signal (i.e., shared configuration); or, the second device is configured with one or more parameters (for example, the one or more parameters are not directly included in the domains (Field or IE) corresponding to the first pilot signal and the second pilot signal), and the first pilot signal and the second pilot signal can directly adopt the one or more parameters (i.e., shared configuration).

[0446] In some embodiments, assuming that there are two control resource sets / search spaces in a control channel, whether the second pilot signal of the data channel is an orthogonal pilot signal or a non-orthogonal pilot signal can be determined based on which control resource set / search space the first DCI that schedules the data channel comes from. For example, if the first pilot signal corresponding to the control resource set / search space that transmits the first DCI is a non-orthogonal pilot signal, then the second pilot signal is also a non-orthogonal pilot signal; for another example, if the first pilot signal corresponding to the control resource set / search space that transmits the first DCI is an orthogonal pilot signal, then the second pilot signal is also an orthogonal pilot signal.

[0447] In other embodiments, when a control channel is configured with a non-orthogonal first pilot signal, regardless of which control resource set the first DCI comes from, the data channel scheduled by the first DCI uses a non-orthogonal second pilot signal. In this case, the first DCI belongs to a UE-Specific Search Space. For example, assuming that there are two control resource sets / UE-Specific Search Spaces in the control channel, and the two control resource sets / UE-Specific Search Spaces are respectively configured with orthogonal pilot signals and non-orthogonal pilot signals, regardless of which control resource set / UE-Specific Search Space the first DCI comes from, the data channel scheduled by the first DCI uses a non-orthogonal second pilot signal.

[0448] That is, when the first pilot signal of the control channel occupies at least part of the time-frequency resources and is also used for control information transmission, the second pilot signal occupies at least part of the time-frequency resources and is also used for data information transmission.

[0449] It should be noted that, when the parameters of the first pilot signal and the second pilot signal may have different configured values, the control channel and the data channel are configured independently.

[0450] Through this method, the first pilot signal and the second pilot signal maintain the same configuration or share a configuration, which can reduce configuration signaling and lower the processing complexity of the first device.

[0451] In some embodiments, before the first device receives the first information from the second device, the method may further include: the first device sends first capability information to the second device, the first capability information indicating that the first device supports receiving the first information; or, the first capability information indicating that the first device supports multiple pilot signals, for example, the first device can support multiple pilot signals for a control channel.

[0452] Accordingly, before the second device sends the first information to the first device, the second device may receive the first capability information.

[0453] In some embodiments, before the first device receives the first information from the second device, the method may further include: the first device sends second capability information to the second device, the second capability information indicating that the first device supports the first pilot signal, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel.

[0454] Accordingly, before the second device sends the first information to the first device, the second device may receive the second capability information.

[0455] Furthermore, the first device may send the first capability information and / or the second capability information through one or more of RRC signaling, MAC CE signaling, and DCI signaling.

[0456] In some embodiments, the first capability information and / or the second capability information is a capability for any of the following objects:

[0457] frequency band;

[0458] Band Combination;

[0459] Each band in the band combination;

[0460] Each carrier on each band in the band combination;

[0461] Frequency Range (FR);

[0462] First device.

[0463] It should be noted that the first capability information and / or the second capability information may be capabilities for a frequency band. That is, different frequency bands (Per Band) may independently report the corresponding first capability information and / or second capability information. Based on this, the first device may have greater freedom. For example, the first device may support reporting the corresponding first capability information and / or second capability information on one or certain frequency bands, but may not support reporting the corresponding first capability information and / or second capability information on other frequency bands, thereby enabling more first devices to support reporting the corresponding first capability information and / or second capability information.

[0464] It should also be noted that the first capability information and / or the second capability information may be capabilities for a frequency band combination, that is, different frequency band combinations may independently report the corresponding first capability information and / or second capability information (Per Band Combination). Based on this, the first device may have greater freedom. For example, the first device may support reporting the corresponding first capability information and / or second capability information on one or some frequency band combinations, but not support reporting the corresponding first capability information and / or second capability information on other frequency band combinations, thereby enabling more first devices to support reporting the corresponding first capability information and / or second capability information.

[0465] It should also be noted that the first capability information and / or the second capability information can be the capability of each frequency band in the frequency band combination, that is, each frequency band in different frequency band combinations (Per Band Per Band Combination) can independently report the corresponding first capability information and / or second capability information. Based on this, the first device can have greater freedom. For example, the first device may not support reporting the corresponding first capability information and / or second capability information under a certain carrier aggregation (CA) combination, but support reporting the corresponding first capability information and / or second capability information on certain frequency bands under another CA combination, so that more first devices can support reporting the corresponding first capability information and / or second capability information.

[0466] It should also be noted that the first capability information and / or the second capability information can be the capability of each carrier on each frequency band in the frequency band combination, that is, different component carriers (CC) in the frequency bands in different frequency band combinations (Per CC Per Band Per Band Combination) can independently report the corresponding first capability information and / or second capability information. Based on this, the first device can have greater freedom. For example, different frequency band combinations can independently report the corresponding first capability information and / or second capability information, and different carriers on a frequency band can also independently report the corresponding first capability information and / or second capability information, so that more first devices can support reporting the corresponding first capability information and / or second capability information.

[0467] It should also be noted that the first capability information and / or the second capability information may be capabilities for FR, that is, different FRs (Per FR) may independently report the corresponding first capability information and / or second capability information. Based on this, the first device may have greater freedom. For example, there are two FRs, respectively denoted as low-frequency FR (i.e., FR1) and high-frequency FR (i.e., FR2). FR1 may not support reporting the corresponding first capability information and / or second capability information, while FR2 may support reporting the corresponding first capability information and / or second capability information, thereby enabling more first devices to support reporting the corresponding first capability information and / or second capability information.

[0468] It should also be noted that the first capability information and / or the second capability information may be capabilities of the first device. Based on this, when the first device reports the first capability information and / or the second capability information, it can be assumed that the first device can support reporting the first capability information and / or the second capability information on all frequency bands, thereby reducing the signaling overhead of the capability reporting of the first device.

[0469] In some embodiments, the first capability information and / or the second capability information includes one or more of the following:

[0470] Supportable power parameters of the first pilot signal;

[0471] a frequency domain pattern of a supportable first pilot signal;

[0472] a supportable time domain pattern of the first pilot signal;

[0473] supportable frequency domain density of the first pilot signal; and

[0474] Supportable time domain density of the first pilot signal.

[0475] An embodiment of the present application provides a communication method in which a first device can receive first information from a second device, where the first information indicates a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals. Thus, by using the first information to indicate the first pilot signal of the control channel, the flexibility of the first pilot signal can be improved. After receiving the first information, the first device can obtain a first pilot signal that matches its actual wireless environment, thereby achieving good performance.

[0476] The communication method provided in the embodiment of the present application is described in detail below in conjunction with specific application scenarios.

[0477] Assume that the system has multiple different DMRSs for control channels. For simplicity of description, the embodiment of the present application takes two DMRSs as an example, respectively denoted as a first DMRS and a second DMRS (the first pilot signal in the aforementioned embodiment can be the first DMRS or the second DMRS). The first DMRS and the second DMRS can maintain different configurations in one or more of the following: power parameters, time domain position, frequency domain position, sequence generation parameters, and sequence generation method.

[0478] It should be noted that the present invention can be easily and directly extended to more different DMRSs, and will not be described in detail one by one.

[0479] The first terminal device can receive the first information sent by the network device or the second terminal device (corresponding to the Sidelink scenario). The first information is used to indicate the first DMRS and / or second DMRS of the control channel, so that the DMRS of the control channel can be flexibly configured to better match the wireless environment and improve system performance.

[0480] In the case where the first information is sent by the first network device, the control channel corresponds to a downlink control channel (eg, PDCCH).

[0481] In the case where the first information is sent by the second terminal device, the control channel corresponds to a side control channel (eg, PSCCH).

[0482] In some embodiments, the first information may be implemented through one or more of the following message / signaling combinations:

[0483] Broadcast message MIB, so that all terminal devices can be notified, reducing the total signaling overhead;

[0484] System messages SIB1 and SIB can notify all terminal devices and reduce the total signaling overhead;

[0485] RRC signaling enables individual configuration of each terminal device, which is more targeted and improves the performance of each terminal device. It is more reliable than MAC CE signaling and DCI.

[0486] MAC CE signaling enables individual configuration of each terminal device, making it more targeted and improving the performance of each terminal device. It has lower latency than RRC signaling and better reliability than DCI.

[0487] DCI signaling enables individual configuration of each terminal device, which is more targeted and improves the performance of each terminal device. It also has lower latency than RRC signaling and MAC CE signaling.

[0488] Downlink messages in the random access process, such as MsgB, Msg2, and Msg4, can be configured in advance to improve system performance.

[0489] AI / ML-specific signaling can improve efficiency.

[0490] For example, the first information may be indicated by RRC signaling and MAC CE signaling. For another example, the first information may be indicated by system message and RRC signaling. Other combinations are not given one by one and can be directly generalized.

[0491] For indications using the same signaling / message, or multiple same signaling / messages, different information in the first information can be indicated through different RRC signaling.

[0492] In the embodiment of the present application, different first information may indicate different DMRSs. For example, in a certain configuration, the first information may indicate a first DMRS, while in another configuration, the first information may indicate a second DMRS.

[0493] In some embodiments, the first information contains at least one information field, which may be implemented in different ways:

[0494] (1) Different values ​​of the information field (i.e., the first information field) are used to indicate whether it is the first DMRS or the second DMRS. For example, when the information field takes one value, it indicates the first DMRS; when the information field takes another value, it indicates the second DMRS.

[0495] It should be noted that different values ​​of the information field can indicate more DMRSs and are not limited to two DMRSs, thereby providing better flexibility.

[0496] (2) When the information field (i.e., the second information field) is configured, it indicates the first DMRS. When the information field is not configured, the control channel uses the second DMRS, and the information field implicitly indicates the second DMRS. In this case, the second DMRS is the default DMRS. The second DMRS can be determined based on pre-defined rules (e.g., protocol specifications), network broadcast information, or system information, thereby saving signaling overhead.

[0497] It should be noted that, when the information field is configured, its value may be "Enabled" or "Support", or variations thereof (eg, Enable, Supported, and other related forms).

[0498] (3) When the information field is configured, the second DMRS is indicated; when the information field is not configured, the control channel uses the first DMRS. In this case, the information field implicitly indicates the first DMRS, thereby saving signaling overhead.

[0499] It should be noted that the first information can indicate whether it is the first DMRS or the second DMRS by configuring different fields through the CHOICE structure.

[0500] The following two embodiments respectively elaborate on whether the first DMRS is an orthogonal DMRS.

[0501] Embodiment 1: The first DMRS is an orthogonal DMRS.

[0502] In some embodiments, the REs for the first DMRS and the REs used for control information do not overlap, i.e., the first DMRS uses different REs than the control information. Similarly, the REs for the second DMRS and the REs used for control information do not overlap, i.e., the second DMRS uses different REs than the control information. In other words, the first DMRS and / or the second DMRS are orthogonal to the control information in terms of time-frequency resources. Based on this, by using orthogonal DMRSs as described in related technologies, the introduction of new DMRSs can be avoided, thereby reducing system complexity.

[0503] The time-frequency resources used by the first DMRS and the second DMRS are different, that is, at least some of the time-frequency resources used by the first DMRS and the second DMRS are different. For example, the time-frequency resources used by the first DMRS and the second DMRS may differ in one or more of the following:

[0504] The power parameters of the first DMRS and the second DMRS are different;

[0505] The first DMRS and the second DMRS are different in frequency domain positions;

[0506] The first DMRS and the second DMRS are different in time domain positions;

[0507] The sequence generation methods of the first DMRS and the second DMRS are different;

[0508] The first DMRS and the second DMRS have different sequence generation parameters.

[0509] In some embodiments, parameters related to the first DMRS and / or the second DMRS can be pre-specified, and the use of the first DMRS or the second DMRS can be indicated by an information field in the first information. For example, the first information can include one or more information fields, with different values ​​indicating different DMRSs. Based on this, by pre-specifying parameters related to the first DMRS and / or the second DMRS, signaling overhead can be reduced.

[0510] In other embodiments, parameters related to the first DMRS may be pre-specified, i.e., the first DMRS is the default DMRS; the first information indicates parameters related to the second DMRS. For example, the first information may include one or more information fields, which indicate parameters related to the second DMRS; if no information fields are configured, the second DMRS may be the default DMRS. Based on this, by pre-specifying the first DMRS, signaling overhead can be reduced while also providing sufficient flexibility for configuring the second DMRS.

[0511] It should be noted that the first DMRS and the second DMRS may have one or more of the following parameters:

[0512] Power parameters;

[0513] Frequency domain position;

[0514] Temporal location;

[0515] Sequence generation parameters;

[0516] Sequence generation method.

[0517] Embodiment 2: The first DMRS is not an orthogonal DMRS.

[0518] In some embodiments, the REs for the second DMRS and the REs used for control information do not overlap, that is, the second DMRS uses different REs than the control information. In other words, the second DMRS and the control information are orthogonal in terms of time-frequency resources. One or more or all REs for the first DMRS are also REs used for control information (to simplify the description, these REs are referred to as shared REs). Based on this, the first DMRS and control information can use the same REs, allowing the control information to use more REs and improving transmission reliability.

[0519] In some embodiments, relevant parameters for the first and second DMRSs can be pre-specified, with the use of the first or second DMRS indicated via an information field in the first information. For example, the first information may include an information field, with different values ​​in the information field indicating different DMRSs. Alternatively, different DMRSs may be indicated based on whether the information field is configured. For example, if the information field is not configured, the second DMRS is indicated, while if the information field is configured, the first DMRS is indicated. Another example is if the information field is not configured, the first DMRS is indicated, while if the information field is configured, the second DMRS is indicated. Based on this, by pre-specifying relevant parameters for the first and second DMRSs, signaling overhead can be reduced.

[0520] In other embodiments, parameters related to the first DMRS can be pre-specified, meaning that the first DMRS serves as the default DMRS. The first message indicates parameters related to the second DMRS via an information field. For example, the first message may contain one or more information fields, which indicate parameters related to the second DMRS. If no information fields are configured, the second DMRS may serve as the default DMRS. Pre-specifying parameters related to the first DMRS can reduce signaling overhead while providing sufficient flexibility for configuring the second DMRS.

[0521] In other embodiments, parameters related to the second DMRS may be pre-specified, i.e., the second DMRS serves as the default DMRS. The first information may indicate the parameters related to the first DMRS via an information field. For example, the first information may contain one or more information fields, indicating the parameters of the first DMRS via the information field. If no information field is configured, the first DMRS may serve as the default DMRS. Pre-specifying the parameters related to the second DMRS can reduce signaling overhead while providing sufficient flexibility for configuring the first DMRS.

[0522] In other embodiments, the first information may indicate relevant parameters of the first DMRS or relevant parameters of the second DMRS. For example, the first information contains one or more information fields, and the parameters of the first DMRS or the second DMRS are indicated through the information fields. For another example, the first information indicates whether it is the first DMRS or the second DMRS by configuring different fields through the CHOICE structure. These two different fields in the CHOICE structure are recorded as the third information field and the fourth information field. When the third information field is configured, it is used to indicate the first DMRS, and when the fourth information field is configured, it is used to indicate the second DMRS. Based on this, by flexibly configuring each DMRS, the system is provided with optimization space.

[0523] In some embodiments, the second DMRS may have one or more of the following parameters:

[0524] Power parameters;

[0525] Frequency domain position;

[0526] Temporal location;

[0527] Sequence generation parameters;

[0528] Sequence generation method.

[0529] In some embodiments, the first information may indicate a power parameter of the first DMRS, or the power parameter of the first DMRS is pre-defined (eg, pre-defined by a protocol, or pre-defined by network broadcast information, etc.).

[0530] It should be noted that the "power" involved in the embodiments of the present application can also be directly expanded to "energy", and the embodiments of the present application do not limit this.

[0531] Through this method, when the power parameter of the first DMRS is indicated by the first information, the power allocation of the first DMRS can be flexibly indicated, so that the system can optimize the transmission power of the first DMRS according to the wireless environment and improve system performance; when the power parameter of the first DMRS is pre-specified, signaling overhead can be saved.

[0532] In some embodiments, the power parameters may include one or more of the following:

[0533] The ratio of the power of the first DMRS transmitted on the shared RE to the total power on the shared RE (i.e., the total power of the DMRS and data);

[0534] The ratio of the power of control information sent in shared REs to the total power on shared REs (i.e., the total power of DMRS and control information);

[0535] A ratio of the power of the first DMRS transmitted on the shared RE to the power of the control information transmitted on the shared RE;

[0536] a ratio of the power of the control information transmitted on the shared RE to the power of the first DMRS transmitted on the shared RE;

[0537] The ratio of the power of the first DMRS transmitted on the shared RE to the total power on an RE (i.e., regardless of whether the RE is a shared RE);

[0538] The ratio of the power of the control information sent on the shared RE to the total power on one RE (ie, whether the RE is a shared RE or not).

[0539] It should be noted that the above ratio can be a linear value or a dB value. For example, a linear value of 0.1 corresponds to a dB value of -10dB or 10dB.

[0540] In the embodiment of the present application, the first information may indicate the frequency domain position of the first DMRS, or the frequency domain position of the first DMRS may be pre-specified (e.g., pre-specified by a protocol, or pre-specified by network broadcast information, etc.). Based on this, the frequency domain position of the first DMRS can be flexibly changed, thereby better facilitating multi-user multiplexing and reducing DMRS interference between users.

[0541] In some embodiments, the first information may indicate the frequency domain density of the first DMRS (eg, the number of REs occupied by the first DMRS within one RB range) and / or the frequency domain offset value of the first DMRS (eg, RE offset value).

[0542] In some embodiments, the first information may indicate which frequency domain resources the first DMRS occupies by way of a bitmap or by directly indicating the identifiers of frequency domain resources (eg, RE, RB).

[0543] In some embodiments, the first information may directly indicate which frequency domain pattern the first DMRS uses. These alternative frequency domain patterns may be determined by pre-defined rules and / or network device configuration. A frequency domain pattern may identify which resources in the frequency domain may be used for the first DMRS. This may reduce signaling overhead.

[0544] In the embodiment of the present application, the first information may indicate the time domain position of the first DMRS, or the time domain position of the first DMRS may be pre-specified (e.g., pre-specified by a protocol, or pre-specified by network broadcast information, etc.). Based on this, the time domain position of the first DMRS can be flexibly changed, thereby achieving a good trade-off between performance and complexity.

[0545] In some embodiments, the first information may indicate the time domain density of the first DMRS (eg, the number of symbols occupied by the first DMRS within a time slot) and / or the time domain offset value of the first DMRS (eg, a symbol offset value).

[0546] In some embodiments, the first information may indicate which time domain resources the first DMRS occupies by way of a Bitmap or by directly indicating a time domain resource identifier. Based on this, the flexibility of the first information indication may be improved.

[0547] In some embodiments, the first information may directly indicate which time domain pattern the first DMRS uses. These alternative time domain patterns may be determined by pre-defined rules and / or network device configuration. A time domain pattern may identify which resources in the time domain may be used for the first DMRS. This may reduce signaling overhead.

[0548] In some embodiments, the first information may indicate a first DMRS sequence generation parameter. The sequence generation parameter of the first DMRS signal may include one or more of the following:

[0549] An identifier of a time slot occupied by the first DMRS signal in the time-frequency resource;

[0550] An identifier of a symbol of a time-frequency resource occupied by the first DMRS signal; and / or an identifier of a symbol of a time-frequency resource occupied by the first DMRS signal within a time slot, a subframe, or a frame;

[0551] An identifier of the SNF where the first DMRS signal is located;

[0552] An identifier of a cell where the first DMRS signal is located, such as an identifier of a physical layer cell;

[0553] An identifier of a carrier on which the first DMRS signal is located, where the carrier may be a carrier in carrier aggregation;

[0554] an identifier of a port of the first DMRS signal, wherein the sequence corresponding to port i of the first DMRS signal may be generated based on the identifier i of the port;

[0555] Scrambling parameters of the first DMRS signal;

[0556] The identifier of the control channel, such as the group identifier corresponding to CORESET;

[0557] Other parameters for network device configuration.

[0558] It should be noted that the sequence generation parameters of each group of first DMRS signals indicated by the first information may include one or more of the above sequence generation parameters.

[0559] By using this method, the sequence of the first DMRS signal can be randomized, sequence interference of DMRS signals between multiple layers can be reduced, and system performance can be improved.

[0560] In the embodiment of the present application, the first embodiment and the second embodiment can be combined. For example, the first information can indicate different DMRSs. For example, the first information indicates three DMRSs. Two DMRSs are orthogonal to the control information, and one DMRS is not orthogonal to the control information.

[0561] In some embodiments, the first information can be configured for the following different objects:

[0562] The first information is configured for a cell, that is, the first information may be information in the configuration information of the control channel in a cell. Based on this, signaling overhead can be reduced;

[0563] The first information is configured for a carrier, that is, the first information can be information in the configuration information of the control channel of a carrier. Based on this, signaling overhead can be reduced;

[0564] The first information is configured for a BWP, that is, the first information can be information in the configuration information of the control channel in a BWP. Based on this, signaling overhead can be reduced;

[0565] The first information is configured for the PSCCH, that is, the first information can be information in the configuration information of a PSCCH channel. Based on this, the signaling overhead can be reduced;

[0566] The first information is configured for a CORESET, that is, the first information can be information in a CORESET configuration information, and the first information can indicate the corresponding CORESET. Based on this, each CORESET can be controlled more flexibly, providing greater freedom for network optimization;

[0567] The first information is configured for a CORESET group, that is, the first information may be information in a CORESET group configuration information, and the first information may indicate the corresponding CORESET group. In the NR communication system, a CORESET group may be referred to as a CORESET pool. Based on this, each CORESET can be controlled more flexibly, providing greater freedom for network optimization;

[0568] The first information may be configured for a search space, that is, the first information may be information in configuration information of a search space, and the first information may indicate the corresponding search space. Based on this, each search space can be controlled more flexibly, providing greater freedom for network optimization.

[0569] In some embodiments, the DMRS indicated by the first information may not be used for one or more of the following:

[0570] The transmission corresponding to CORESET numbered 0 is CORESET 0;

[0571] The transmission corresponding to the search space numbered 0 is Search Space 0;

[0572] The transmission corresponding to the CORESET corresponding to the search space numbered 0;

[0573] Transmission corresponding to the search space for receiving SIB1 messages;

[0574] Used to receive the transmission corresponding to the CORESET corresponding to the search space of the SIB1 message;

[0575] Used to receive transmissions corresponding to the search space of other system messages, where the other system messages are messages other than SIB1 messages;

[0576] Used to receive transmissions corresponding to the CORESET corresponding to the search space of other system messages;

[0577] Transmission corresponding to the search space used for paging;

[0578] Transmission corresponding to the CORESET corresponding to the search space used for paging;

[0579] Transmission corresponding to the search space for random access;

[0580] Transmission corresponding to the CORESET corresponding to the search space for random access;

[0581] Transmission corresponding to the common search space.

[0582] Through this method, the one or more items mentioned above still use the system default or pre-defined DMRS, thereby avoiding the ambiguity stage when switching between different DMRSs and improving system stability.

[0583] It should be noted that the first terminal device can use DMRS to receive the corresponding control channel based on the first information. For example, the first terminal device can receive two first information, one of which corresponds to one CORESET and the other corresponds to another CORESET. This can be extended to more first information, and this embodiment of the present application will not be further described.

[0584] In some embodiments, when the number of repeated transmissions of the control channel includes at least two, the number of DMRSs corresponding to the control channel includes at least two, and the at least two DMRSs maintain the same configuration in one or more of the following parameters:

[0585] Whether at least two DMRSs use one or more of the same REs (i.e., at least one shared RE) as the control information;

[0586] Whether all REs occupied by at least two DMRSs are used for control information at the same time (i.e., all REs of DMRSs are shared REs);

[0587] Frequency domain density;

[0588] Time domain density;

[0589] Power parameters.

[0590] For example, assuming that the control channel is transmitted twice, there are two DMRSs corresponding to the control channel, one of which can be a non-orthogonal DMRS and the other can be an orthogonal DMRS. Based on this, even if the non-orthogonal DMRS has poor performance, the PDCCH of the orthogonal DMRS can be used for separate demodulation.

[0591] In some embodiments, there may be a separate DMRS configuration for a data channel (e.g., PDSCH or PSSCH). The DMRS corresponding to the data channel and the control channel may maintain the same configuration or share some configurations in one or more of the following parameters:

[0592] All REs occupied by DMRS are used for data information or control information transmission (i.e., all REs occupied by DMRS are shared REs);

[0593] The DMRS corresponding to the data channel and the control channel have one or more REs used for the transmission of data information or control information (the DMRS corresponding to the data channel and the control channel each contain at least one shared RE); or, the DMRS corresponding to the data channel and the control channel have no REs used for the transmission of data information or control information (that is, the DMRS corresponding to the data channel and the control channel have no shared REs);

[0594] The power parameters are the same;

[0595] The sequence generation method is the same (single-port DMRS for data PDSCH);

[0596] Frequency domain density;

[0597] Time domain density.

[0598] It should be noted that, in the case where the DMRS corresponding to the data channel and the control channel do not maintain the same configured parameters, it can be considered that the control channel and the data channel are independently configured.

[0599] In some embodiments, when the first information may indicate that the control channel uses non-orthogonal DMRS, the DMRS used by the data channel (e.g., PDSCH or PSSCH) scheduled by the control channel also has at least one RE used for data information transmission. In other words, if the control channel uses non-orthogonal DMRS, the corresponding data channel also uses non-orthogonal DMRS. Based on this, the same type of DMRS can reduce the processing complexity of the first terminal device.

[0600] In some embodiments, before the first terminal device receives the first information, the first terminal device may send first capability information to the first network device and / or the second terminal device, where the first capability information indicates that the first terminal device supports receiving the first information; or, the first capability information indicates that the first terminal device supports 2 or more DMRSs of the control channel.

[0601] In some embodiments, before the first terminal device receives the first information, the first terminal device may send second capability information to the first network device and / or the second terminal device, where the second capability information indicates that the first terminal device supports the first DMRS of the control channel, and one or more or all REs of the first DMRS are also REs used for control information (i.e., Shared REs).

[0602] Exemplarily, the first capability information and / or the second capability information may be transmitted via RRC signaling or MAC CE.

[0603] It should be noted that the first capability information and / or the second capability information may be capabilities for frequency bands. That is, different frequency bands may independently report the corresponding first capability information and / or second capability information. Based on this, the first terminal device may have greater freedom. For example, the first terminal device may support reporting the corresponding first capability information and / or second capability information on one or some frequency bands, but not support reporting the corresponding first capability information and / or second capability information on other frequency bands, thereby enabling more first terminal devices to support reporting the corresponding first capability information and / or second capability information.

[0604] It should also be noted that the first capability information and / or the second capability information may be capabilities for a frequency band combination, that is, different frequency band combinations may independently report the corresponding first capability information and / or second capability information. Based on this, the first terminal device may have greater freedom. For example, the first terminal device may support reporting the corresponding first capability information and / or second capability information on one or some frequency band combinations, but may not support reporting the corresponding first capability information and / or second capability information on other frequency band combinations, thereby enabling more first terminal devices to support reporting the corresponding first capability information and / or second capability information.

[0605] It should also be noted that the first capability information and / or the second capability information may be the capability for each frequency band in the frequency band combination, that is, each frequency band in different frequency band combinations may independently report the corresponding first capability information and / or second capability information. Based on this, the first terminal device can have a greater degree of freedom. For example, the first terminal device may not support reporting the corresponding first capability information and / or second capability information under a certain carrier aggregation combination, while supporting reporting the corresponding first capability information and / or second capability information in certain frequency bands under another CA combination, thereby enabling more first terminal devices to support reporting the corresponding first capability information and / or second capability information.

[0606] It should also be noted that the first capability information and / or the second capability information can be the capability of each carrier on each frequency band in the frequency band combination, that is, different component carriers in the frequency bands in different frequency band combinations can independently report the corresponding first capability information and / or second capability information. Based on this, the first terminal device can have a greater degree of freedom. For example, different frequency band combinations can independently report the corresponding first capability information and / or second capability information, and different carriers on a frequency band can also independently report the corresponding first capability information and / or second capability information, so that more first terminal devices can support reporting the corresponding first capability information and / or second capability information.

[0607] It should also be noted that the first capability information and / or the second capability information may be capabilities for FR, that is, different FRs may independently report the corresponding first capability information and / or second capability information. Based on this, the first terminal device may have greater freedom. For example, there are two FRs, respectively denoted as low-frequency FR (i.e., FR1) and high-frequency FR (i.e., FR2). FR1 may not support reporting the corresponding first capability information and / or second capability information, while FR2 may support reporting the corresponding first capability information and / or second capability information, thereby enabling more first terminal devices to support reporting the corresponding first capability information and / or second capability information.

[0608] It should also be noted that the first capability information and / or the second capability information may be capabilities for the first terminal device. Based on this, when the first terminal device reports the first capability information and / or the second capability information, it can be considered that the first terminal device can support reporting the first capability information and / or the second capability information on all frequency bands, thereby reducing the signaling overhead of the capability reporting of the first terminal device.

[0609] In some embodiments, for a DMRS of a control channel, the first capability information and / or the second capability information may include one or more of the following capabilities:

[0610] Supported power parameters;

[0611] Supports frequency domain patterns of DMRS;

[0612] Supports DMRS time domain patterns;

[0613] Supported DMRS frequency domain density;

[0614] Supported DMRS time domain density.

[0615] In an embodiment of the present application, a first terminal device may receive first information from a network device or a second terminal device. The first information is used to indicate a DMRS for a control channel. The DMRS for the control channel is one or more of a plurality of pilot signals. Thus, by indicating the DMRS for the control channel via the first information, the flexibility of the DMRS can be improved. After receiving the first information, the first terminal device can obtain a DMRS that matches its actual wireless environment, thereby achieving good performance.

[0616] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0617] It should also be understood that in the various method embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0618] FIG12 is a schematic diagram of the structure of a communication device 1200 provided in an embodiment of the present application, which is applied to a first device. The first device may be the first terminal device in the aforementioned embodiment. As shown in FIG12 , the communication device 1200 may include:

[0619] The first receiving unit 1210 is configured to receive first information from the second device, where the first information is used to indicate a first pilot signal of a control channel, and the first pilot signal is one or more of a plurality of pilot signals.

[0620] In some embodiments, the multiple pilot signals maintain different configurations with respect to one or more of the following parameters:

[0621] Power parameters;

[0622] The time domain location of the occupied time-frequency resources;

[0623] The frequency domain position of the occupied time-frequency resources;

[0624] sequence generation methods; and,

[0625] Sequence generation parameters.

[0626] In some embodiments, the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel; or at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel.

[0627] In some embodiments, the first information includes a first information field, and a value of the first information field indicates a first pilot signal.

[0628] In some embodiments, the first information includes a second information field, and the second information field indicates the first pilot signal if configured; or the second information field indicates the first pilot signal if not configured.

[0629] In some embodiments, the first information indicates one or more of the following parameters of the first pilot signal; or, one or more of the following parameters of the first pilot signal are predefined:

[0630] Power parameters;

[0631] The frequency domain position of the occupied time-frequency resources;

[0632] The time domain location of the occupied time-frequency resources;

[0633] sequence generation methods; and,

[0634] Sequence generation parameters.

[0635] In some embodiments, when at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of a control channel, the power parameter of the first pilot signal includes one or more of the following:

[0636] a ratio of the power of the first pilot signal sent on the first time-frequency resource to the total power on the second time-frequency resource;

[0637] a ratio of the power of control information of the control channel sent on the first time-frequency resource to the total power on the second time-frequency resource;

[0638] a ratio of the power of the first pilot signal sent on the first time-frequency resource to the power of the control information of the control channel sent on the first time-frequency resource; and

[0639] a ratio of power of control information of the control channel sent on the first time-frequency resource to power of the first pilot signal sent on the first time-frequency resource;

[0640] The first time-frequency resource is any one of at least some of the time-frequency resources; the second time-frequency resource is any one of at least some of the time-frequency resources, or the second time-frequency resource is any one of the other time-frequency resources except at least some of the time-frequency resources.

[0641] In some embodiments, the frequency domain position is determined according to one or more of the following parameters indicated by the first information: frequency domain density; frequency domain offset value; and frequency domain pattern.

[0642] In some embodiments, the first information indicates the frequency domain position through a first bitmap; and / or, the first information indicates the frequency domain position through an identifier of a frequency domain resource.

[0643] In some embodiments, the time domain position is determined according to one or more of the following parameters indicated by the first information: a time domain density; a time domain offset value; and a time domain pattern.

[0644] In some embodiments, the first information indicates the time domain position through a second bitmap; and / or, the first information indicates the time domain position through an identifier of a time domain resource.

[0645] In some embodiments, the sequence generation parameters of the first pilot signal include one or more of the following:

[0646] An identifier of a time domain resource in the time-frequency resources occupied by the first pilot signal;

[0647] An identifier of the system frame number in which the first pilot signal resides;

[0648] an identifier of the cell where the first pilot signal is located;

[0649] an identifier of the carrier where the first pilot signal is located;

[0650] an identifier of a port of the first pilot signal;

[0651] scrambling parameters of the first pilot signal; and

[0652] Identifier of the control channel.

[0653] In some embodiments, the first information indicates one or more of the following:

[0654] community;

[0655] carrier wave;

[0656] Bandwidth part;

[0657] Physical sideline control channel;

[0658] Control resource sets;

[0659] Control resource set groups; and,

[0660] Search space.

[0661] In some embodiments, the first pilot signal is not used for one or more of the following:

[0662] transmission corresponding to a control resource set identified as a first value;

[0663] a transmission corresponding to a search space identified as a second value;

[0664] transmission corresponding to a control resource set corresponding to a search space identified as a third value;

[0665] receiving a transmission corresponding to a search space of system information block 1;

[0666] receiving a transmission corresponding to a control resource set corresponding to a search space of system information block 1;

[0667] receiving transmissions corresponding to search spaces of other system messages, where other system messages are system messages other than system information block 1;

[0668] Receive transmission corresponding to the control resource set corresponding to the search space of other system messages;

[0669] Transmission corresponding to the paging search space;

[0670] Transmission corresponding to the control resource set corresponding to the paging search space;

[0671] Transmission corresponding to the random access search space;

[0672] transmission corresponding to the control resource set corresponding to the random access search space; and

[0673] Transmission corresponding to the common search space.

[0674] Exemplarily, the first value is 0.

[0675] Exemplarily, the second value is 0.

[0676] Exemplarily, the third value is 0.

[0677] In some embodiments, when the number of repeated transmissions of the control channel includes at least two, the number of first pilot signals includes at least two;

[0678] The at least two first pilot signals maintain the same configuration in one or more of the following parameters:

[0679] At least part of the time-frequency resources occupied by each of the at least two first pilot signals is used to transmit control information of the control channel;

[0680] frequency domain density of time-frequency resources occupied by each of the at least two first pilot signals;

[0681] time domain density of time-frequency resources occupied by each of the at least two first pilot signals; and

[0682] power parameters of at least two first pilot signals.

[0683] In some embodiments, the time-frequency resources occupied by at least one of the at least two first pilot signals are not used to transmit control information of the control channel, and at least part of the time-frequency resources occupied by at least another first pilot signal are used to transmit control information of the control channel.

[0684] In some embodiments, the second pilot signal of the data channel scheduled by the first downlink control information DCI transmitted through the control channel maintains the same configuration as the first pilot signal in terms of one or more of the following parameters:

[0685] At least part of the time-frequency resources occupied by the second pilot signal is used to transmit data information of the data channel, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel;

[0686] The time-frequency resources occupied by the second pilot signal are not used to transmit data information of the data channel, and the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel;

[0687] power parameters of the second pilot signal and the first pilot signal;

[0688] Sequence generation methods for the second pilot signal and the first pilot signal;

[0689] frequency domain densities of time-frequency resources occupied by the second pilot signal and the first pilot signal; and

[0690] The time domain density of the time-frequency resources occupied by the second pilot signal and the first pilot signal respectively.

[0691] In some embodiments, as shown in FIG12 , the communication device 1200 may further include a first sending unit 1220 , wherein:

[0692] The first sending unit 1220 is configured to send first capability information to the second device, where the first capability information indicates that the first device supports receiving the first information; or the first capability information indicates that the first device supports multiple pilot signals for the control channel.

[0693] In some embodiments, the first sending unit 1220 is further configured to send second capability information to the second device, where the second capability information indicates that the first device supports the first pilot signal, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel.

[0694] In some embodiments, the first capability information and / or the second capability information is a capability for any of the following objects:

[0695] frequency band;

[0696] frequency band combination;

[0697] Each band in the band combination;

[0698] Each carrier on each band in the band combination;

[0699] Frequency band range;

[0700] First device.

[0701] In some embodiments, the first capability information and / or the second capability information includes one or more of the following:

[0702] Supportable power parameters of the first pilot signal;

[0703] a frequency domain pattern of a supportable first pilot signal;

[0704] a supportable time domain pattern of the first pilot signal;

[0705] supportable frequency domain density of the first pilot signal; and

[0706] Supportable time domain density of the first pilot signal.

[0707] In some embodiments, the first information is carried by one or more of the following:

[0708] Broadcast messages;

[0709] System messages;

[0710] Radio Resource Control (RRC) signaling;

[0711] Media Access Control Unit MAC CE signaling;

[0712] DCI;

[0713] Random access message; and,

[0714] Dedicated signaling.

[0715] In some embodiments, the control channel includes a downlink control channel and / or a sidelink control channel.

[0716] An embodiment of the present application provides a communication apparatus in which a first device can receive first information from a second device, where the first information indicates a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals. Thus, by using the first information to indicate the first pilot signal of the control channel, the flexibility of the first pilot signal can be improved. After receiving the first information, the first device can obtain a first pilot signal that matches its actual wireless environment, thereby achieving good performance.

[0717] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0718] FIG13 is a schematic diagram of the structure of a communication device 1300 provided in an embodiment of the present application, which is applied to a second device. The second device may be the second terminal device or the network device in the aforementioned embodiment. As shown in FIG13 , the communication device 1300 may include:

[0719] The second sending unit 1310 is configured to send first information to the first device, where the first information is used to indicate a first pilot signal of a control channel, and the first pilot signal is one or more of a plurality of pilot signals.

[0720] In some embodiments, the multiple pilot signals maintain different configurations with respect to one or more of the following parameters:

[0721] Power parameters;

[0722] The time domain location of the occupied time-frequency resources;

[0723] The frequency domain position of the occupied time-frequency resources;

[0724] sequence generation methods; and,

[0725] Sequence generation parameters.

[0726] In some embodiments, the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel; or at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel.

[0727] In some embodiments, the first information includes a first information field, and a value of the first information field indicates a first pilot signal.

[0728] In some embodiments, the first information includes a second information field, and the second information field indicates the first pilot signal if configured; or the second information field indicates the first pilot signal if not configured.

[0729] In some embodiments, the first information indicates one or more of the following parameters of the first pilot signal; or, one or more of the following parameters of the first pilot signal are predefined:

[0730] Power parameters;

[0731] The frequency domain position of the occupied time-frequency resources;

[0732] The time domain location of the occupied time-frequency resources;

[0733] sequence generation methods; and,

[0734] Sequence generation parameters.

[0735] In some embodiments, when at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of a control channel, the power parameter of the first pilot signal includes one or more of the following:

[0736] a ratio of the power of the first pilot signal sent on the first time-frequency resource to the total power on the second time-frequency resource;

[0737] a ratio of the power of control information of the control channel sent on the first time-frequency resource to the total power on the second time-frequency resource;

[0738] a ratio of the power of the first pilot signal sent on the first time-frequency resource to the power of the control information of the control channel sent on the first time-frequency resource; and

[0739] a ratio of power of control information of the control channel sent on the first time-frequency resource to power of the first pilot signal sent on the first time-frequency resource;

[0740] The first time-frequency resource is any one of at least some of the time-frequency resources; the second time-frequency resource is any one of at least some of the time-frequency resources, or the second time-frequency resource is any one of the other time-frequency resources except at least some of the time-frequency resources.

[0741] In some embodiments, the frequency domain position is determined according to one or more of the following parameters indicated by the first information: frequency domain density; frequency domain offset value; and frequency domain pattern.

[0742] In some embodiments, the first information indicates the frequency domain position through a first bitmap; and / or, the first information indicates the frequency domain position through an identifier of a frequency domain resource.

[0743] In some embodiments, the time domain position is determined according to one or more of the following parameters indicated by the first information: a time domain density; a time domain offset value; and a time domain pattern.

[0744] In some embodiments, the first information indicates the time domain position through a second bitmap; and / or, the first information indicates the time domain position through an identifier of a time domain resource.

[0745] In some embodiments, the sequence generation parameters of the first pilot signal include one or more of the following:

[0746] An identifier of a time domain resource in the time-frequency resources occupied by the first pilot signal;

[0747] An identifier of the system frame number in which the first pilot signal resides;

[0748] an identifier of the cell where the first pilot signal is located;

[0749] an identifier of the carrier where the first pilot signal is located;

[0750] an identifier of a port of the first pilot signal;

[0751] scrambling parameters of the first pilot signal; and

[0752] Identifier of the control channel.

[0753] In some embodiments, the first information indicates one or more of the following:

[0754] community;

[0755] carrier wave;

[0756] Bandwidth part;

[0757] Physical sideline control channel;

[0758] Control resource sets;

[0759] Control resource set groups; and,

[0760] Search space.

[0761] In some embodiments, the first pilot signal is not used for one or more of the following:

[0762] transmission corresponding to a control resource set identified as a first value;

[0763] a transmission corresponding to a search space identified as a second value;

[0764] transmission corresponding to a control resource set corresponding to a search space identified as a third value;

[0765] receiving a transmission corresponding to a search space of system information block 1;

[0766] receiving a transmission corresponding to a control resource set corresponding to a search space of system information block 1;

[0767] receiving transmissions corresponding to search spaces of other system messages, where other system messages are system messages other than system information block 1;

[0768] Receive transmission corresponding to the control resource set corresponding to the search space of other system messages;

[0769] Transmission corresponding to the paging search space;

[0770] Transmission corresponding to the control resource set corresponding to the paging search space;

[0771] Transmission corresponding to the random access search space;

[0772] transmission corresponding to the control resource set corresponding to the random access search space; and

[0773] Transmission corresponding to the common search space.

[0774] Exemplarily, the first value is 0.

[0775] Exemplarily, the second value is 0.

[0776] Exemplarily, the third value is 0.

[0777] In some embodiments, when the number of repeated transmissions of the control channel includes at least two, the number of first pilot signals includes at least two;

[0778] The at least two first pilot signals maintain the same configuration in one or more of the following parameters:

[0779] At least part of the time-frequency resources occupied by each of the at least two first pilot signals is used to transmit control information of the control channel;

[0780] frequency domain density of time-frequency resources occupied by each of the at least two first pilot signals;

[0781] time domain density of time-frequency resources occupied by each of the at least two first pilot signals; and

[0782] power parameters of at least two first pilot signals.

[0783] In some embodiments, the time-frequency resources occupied by at least one of the at least two first pilot signals are not used to transmit control information of the control channel, and at least part of the time-frequency resources occupied by at least another first pilot signal are used to transmit control information of the control channel.

[0784] In some embodiments, the second pilot signal of the data channel scheduled by the first downlink control information DCI transmitted through the control channel maintains the same configuration as the first pilot signal in terms of one or more of the following parameters:

[0785] At least part of the time-frequency resources occupied by the second pilot signal is used to transmit data information of the data channel, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel;

[0786] The time-frequency resources occupied by the second pilot signal are not used to transmit data information of the data channel, and the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel;

[0787] power parameters of the second pilot signal and the first pilot signal;

[0788] Sequence generation methods for the second pilot signal and the first pilot signal;

[0789] frequency domain densities of time-frequency resources occupied by the second pilot signal and the first pilot signal respectively;

[0790] The time domain density of the time-frequency resources occupied by the second pilot signal and the first pilot signal respectively.

[0791] In some embodiments, as shown in FIG13 , the communication device 1300 may further include a second receiving unit 1320 , wherein:

[0792] The second receiving unit 1320 is configured to receive first capability information from the first device, where the first capability information indicates that the first device supports receiving the first information; or the first capability information indicates that the first device supports multiple pilot signals for the control channel.

[0793] In some embodiments, the second receiving unit 1320 is further configured to receive second capability information from the first device, where the second capability information indicates that the first device supports the first pilot signal, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel.

[0794] In some embodiments, the first capability information and / or the second capability information is a capability for any of the following objects:

[0795] frequency band;

[0796] frequency band combination;

[0797] Each band in the band combination;

[0798] Each carrier on each band in the band combination;

[0799] Frequency band range;

[0800] First device.

[0801] In some embodiments, the first capability information and / or the second capability information includes one or more of the following:

[0802] Supportable power parameters of the first pilot signal;

[0803] a frequency domain pattern of a supportable first pilot signal;

[0804] a supportable time domain pattern of the first pilot signal;

[0805] supportable frequency domain density of the first pilot signal; and

[0806] Supportable time domain density of the first pilot signal.

[0807] In some embodiments, the first information is carried by one or more of the following:

[0808] Broadcast messages;

[0809] System messages;

[0810] Radio Resource Control (RRC) signaling;

[0811] Media Access Control Unit MAC CE signaling;

[0812] Downlink control information DCI;

[0813] Random access message; and,

[0814] Dedicated signaling.

[0815] In some embodiments, the control channel includes a downlink control channel and / or a sidelink control channel.

[0816] An embodiment of the present application provides a communication apparatus in which a second device can send first information to a first device. The first information is used to indicate a first pilot signal of a control channel. The first pilot signal is one or more of a plurality of pilot signals. Thus, by using the first information to indicate the first pilot signal of the control channel, the flexibility of the first pilot signal can be improved. A first pilot signal that matches the actual wireless environment of the first device can be obtained, thereby achieving good performance for the first device.

[0817] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0818] Figure 14 is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device 1400 can be a first device or a second device; wherein the first device can be the first terminal device in the aforementioned embodiment, and the second device can be the second terminal device or network device in the aforementioned embodiment. The communication device 1400 shown in Figure 14 may include a processor 1410 and a memory 1420, wherein:

[0819] The memory 1420 may be used to store computer-executable instructions;

[0820] The processor 1410 is connected to the memory 1420 and is configured to implement the method in the embodiment of the present application by executing computer-executable instructions.

[0821] The memory 1420 may be a separate device from the processor 1410 , or may be integrated into the processor 1410 .

[0822] In some embodiments, as shown in FIG14 , the communication device 1400 may further include a transceiver 1430 , and the processor 1410 may control the transceiver 1430 to communicate with other devices. Specifically, the transceiver 1430 may send information or data to other devices, or receive information or data sent by other devices.

[0823] The transceiver 1430 may include a transmitter and a receiver. The transceiver 1430 may further include an antenna, and the number of antennas may be one or more.

[0824] In some embodiments, the communication device 1400 may be the first device of an embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0825] In some embodiments, the communication device 1400 may be the second device of the embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the second device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0826] FIG15 is a schematic structural diagram of a chip provided in an embodiment of the present application. The chip 1500 shown in FIG15 includes a processor 1510 and a memory 1520, wherein:

[0827] The processor 1510 can call and run a computer program from the memory 1520, so that the device equipped with the chip executes the method in the embodiment of the present application.

[0828] The memory 1520 may be a separate device independent of the processor 1510 , or may be integrated into the processor 1510 .

[0829] In some embodiments, the chip 1500 may further include an input interface 1530. The processor 1510 may control the input interface 1530 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0830] In some embodiments, the chip 1500 may further include an output interface 1540. The processor 1510 may control the output interface 1540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0831] In some embodiments, the chip can be applied to the first device (such as the first terminal device) in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the first device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0832] In some embodiments, the chip can be applied to the second device (such as a second terminal device, or a network device) in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the second device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0833] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0834] FIG16 is a schematic block diagram of a communication system according to an embodiment of the present application. As shown in FIG16 , the communication system 1600 includes a first device 1610 and a second device 1620 .

[0835] The first device 1610 may be the first terminal device in the aforementioned embodiment, and the second device 1620 may be the second terminal device or network device in the aforementioned embodiment. The first device 1610 may be used to implement the corresponding functions implemented by the first device in the aforementioned method, and the second device 1620 may be used to implement the corresponding functions implemented by the second device in the aforementioned method. For the sake of brevity, these details are not repeated here.

[0836] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0837] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0838] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0839] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, the method in the embodiment of the present application is implemented.

[0840] In some embodiments, the computer-readable storage medium can be applied to the first device (such as the first terminal device) in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0841] In some embodiments, the computer-readable storage medium can be applied to the second device (such as a second terminal device, or a network device) in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0842] An embodiment of the present application also provides a computer program product, which includes a computer storage medium, the computer storage medium storing a computer program, and the computer program including instructions that can be executed by at least one processor. When the instructions are executed by at least one processor, the method in the embodiment of the present application is implemented.

[0843] In some embodiments, the computer program product can be applied to the first device (such as the first terminal device) in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0844] In some embodiments, the computer program product can be applied to the second device (such as a second terminal device, or a network device) in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the second device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0845] The embodiments of the present application also provide a computer program, which enables a computer to execute the method in the embodiments of the present application.

[0846] In some embodiments, the computer program can be applied to the first device (such as the first terminal device) in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the first device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0847] In some embodiments, the computer program can be applied to a second device (such as a second terminal device, or a network device) in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the second device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0848] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0849] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0850] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0851] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0852] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0853] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0854] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, the method comprising: The first device receives first information from the second device, where the first information is used to indicate a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals.

2. The method according to claim 1, wherein: The multiple pilot signals maintain different configurations in one or more of the following parameters: Power parameters; The time domain location of the occupied time-frequency resources; The frequency domain position of the occupied time-frequency resources; sequence generation methods; and, Sequence generation parameters.

3. The method according to claim 1 or 2, wherein: The time-frequency resources occupied by the first pilot signal are not used to transmit the control information of the control channel; or at least part of the time-frequency resources occupied by the first pilot signal are used to transmit the control information of the control channel.

4. The method according to any one of claims 1 to 3, wherein: The first information includes a first information field, and a value of the first information field indicates the first pilot signal.

5. The method according to any one of claims 1 to 3, wherein: The first information includes a second information field, where the second information field indicates the first pilot signal if configured; or, the second information field indicates the first pilot signal if not configured.

6. The method according to any one of claims 1 to 5, wherein: The first information indicates one or more of the following parameters of the first pilot signal; or, one or more of the following parameters of the first pilot signal are predefined: Power parameters; The frequency domain position of the occupied time-frequency resources; The time domain location of the occupied time-frequency resources; sequence generation methods; and, Sequence generation parameters.

7. The method according to claim 6, wherein: In a case where at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel, the power parameter of the first pilot signal includes one or more of the following: a ratio of power of the first pilot signal sent on the first time-frequency resource to total power on the second time-frequency resource; a ratio of power at which control information of the control channel is sent on the first time-frequency resource to total power on the second time-frequency resource; a ratio of power of the first pilot signal sent on the first time-frequency resource to power of control information of the control channel sent on the first time-frequency resource; as well as, a ratio of power of control information of the control channel sent on the first time-frequency resource to power of the first pilot signal sent on the first time-frequency resource; The first time-frequency resource is any one of the at least part of the time-frequency resources; the second time-frequency resource is any one of the at least part of the time-frequency resources, or the second time-frequency resource is any one of the other time-frequency resources except the at least part of the time-frequency resources.

8. The method according to claim 6 or 7, wherein: The frequency domain position of the time-frequency resource occupied by the first pilot signal is determined according to one or more of the following parameters indicated by the first information: Frequency domain density; A frequency domain offset value; and, Frequency domain pattern.

9. The method according to any one of claims 6 to 8, wherein: The first information indicates a frequency domain position of a time-frequency resource occupied by the first pilot signal, including: The first information indicates the frequency domain position through a first bitmap; and / or, The first information indicates the frequency domain position through an identifier of a frequency domain resource.

10. The method according to any one of claims 6 to 9, wherein: The time domain position of the time-frequency resource occupied by the first pilot signal is determined according to one or more of the following parameters indicated by the first information: Time domain density; A time domain offset value; and, Time domain pattern.

11. The method according to any one of claims 6 to 10, wherein: The first information indicates a time domain position of a time-frequency resource occupied by the first pilot signal, including: The first information indicates the time domain position through a second bitmap; and / or, The first information indicates the time domain position through an identifier of a time domain resource.

12. The method according to any one of claims 6 to 11, wherein: The sequence generation parameters of the first pilot signal include one or more of the following: An identifier of a time domain resource in the time-frequency resource occupied by the first pilot signal; An identifier of a system frame number in which the first pilot signal resides; An identifier of a cell where the first pilot signal is located; An identifier of a carrier where the first pilot signal is located; an identifier of a port of the first pilot signal; a scrambling parameter of the first pilot signal; and The identifier of the control channel.

13. The method according to any one of claims 1 to 12, wherein: The first information indicates one or more of the following objects: Community; Carrier; Bandwidth part; Physical side control channel; Control resource sets; controlling a set of resource sets; and, Search space.

14. The method according to any one of claims 1 to 13, wherein: The first pilot signal is not used for one or more of the following: a transmission corresponding to a control resource set identified as a first value; a transmission corresponding to a search space identified as a second value; transmission corresponding to a control resource set corresponding to a search space identified as a third value; receiving a transmission corresponding to a search space of system information block 1; receiving a transmission corresponding to a control resource set corresponding to a search space of system information block 1; receiving a transmission corresponding to a search space of other system messages, wherein the other system messages are system messages other than system information block 1; Receiving a transmission corresponding to a control resource set corresponding to a search space of the other system message; Transmission corresponding to the paging search space; Transmission corresponding to the control resource set corresponding to the paging search space; Transmission corresponding to the random access search space; transmission corresponding to a control resource set corresponding to a random access search space; and, Transmission corresponding to the common search space.

15. The method according to any one of claims 1 to 14, wherein: In a case where the number of repeated transmissions of the control channel includes at least two, the number of the first pilot signals includes at least two; At least two of the first pilot signals maintain the same configuration in one or more of the following parameters: At least part of the time-frequency resources occupied by each of the at least two first pilot signals is used to transmit control information of the control channel; frequency domain density of the time-frequency resources occupied by each of the at least two first pilot signals; time domain density of the time-frequency resources occupied by each of the at least two first pilot signals; and The power parameters of the at least two first pilot signals respectively.

16. The method according to claim 15, wherein: The time-frequency resources occupied by at least one of the at least two first pilot signals are not used to transmit the control information of the control channel, and at least part of the time-frequency resources occupied by at least another one of the first pilot signals are used to transmit the control information of the control channel.

17. The method according to any one of claims 1 to 16, wherein: The second pilot signal of the data channel scheduled by the first downlink control information DCI transmitted by the control channel maintains the same configuration as the first pilot signal in one or more of the following parameters: At least part of the time-frequency resources occupied by the second pilot signal is used to transmit data information of the data channel, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel; The time-frequency resources occupied by the second pilot signal are not used to transmit data information of the data channel, and the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel; power parameters of the second pilot signal and the first pilot signal respectively; a method for generating sequences of the second pilot signal and the first pilot signal respectively; frequency domain density of time-frequency resources occupied by the second pilot signal and the first pilot signal respectively; and The time domain density of the time-frequency resources occupied by the second pilot signal and the first pilot signal respectively.

18. The method according to any one of claims 1 to 17, wherein: Before the first device receives the first information from the second device, the method further includes: The first device sends first capability information to the second device, where the first capability information indicates that the first device supports receiving the first information; or, the first capability information indicates that the first device supports the multiple pilot signals for the control channel.

19. The method according to any one of claims 1 to 18, wherein: Before the first device receives the first information from the second device, the method further includes: The first device sends second capability information to the second device, where the second capability information indicates that the first device supports the first pilot signal, and at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel.

20. The method according to claim 18 or 19, wherein: The first capability information and / or the second capability information is a capability for any of the following objects: Frequency band; Frequency band combination; Each band in the band combination; Each carrier on each band in the band combination; Frequency band range; The first device.

21. The method according to any one of claims 18 to 20, wherein: The first capability information and / or the second capability information includes one or more of the following: a supportable power parameter of the first pilot signal; a supportable frequency domain pattern of the first pilot signal; a supportable time domain pattern of the first pilot signal; a frequency domain density of the first pilot signal that can be supported; and The supportable time domain density of the first pilot signal.

22. The method according to any one of claims 1 to 21, wherein: The first information is carried by one or more of the following: Broadcast messages; System messages; Radio Resource Control (RRC) signaling; Media Access Control Unit MAC CE signaling; DCI; a random access message; and, Dedicated signaling.

23. The method according to any one of claims 1 to 22, wherein: The control channel includes a downlink control channel and / or a sidelink control channel.

24. A communication method, the method comprising: The second device sends first information to the first device, where the first information is used to indicate a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals.

25. The method according to claim 24, wherein: The multiple pilot signals maintain different configurations in one or more of the following parameters: Power parameters; The time domain location of the occupied time-frequency resources; The frequency domain position of the occupied time-frequency resources; sequence generation methods; and, Sequence generation parameters.

26. The method according to claim 24 or 25, wherein: The time-frequency resources occupied by the first pilot signal are not used to transmit the control information of the control channel; or at least part of the time-frequency resources occupied by the first pilot signal are used to transmit the control information of the control channel.

27. The method according to any one of claims 24 to 26, wherein: The first information includes a first information field, and a value of the first information field indicates the first pilot signal.

28. The method according to any one of claims 24 to 26, wherein: The first information includes a second information field, where the second information field indicates the first pilot signal if configured; or, the second information field indicates the first pilot signal if not configured.

29. The method according to any one of claims 24 to 28, wherein: The first information indicates one or more of the following parameters of the first pilot signal; or, one or more of the following parameters of the first pilot signal are predefined: Power parameters; The frequency domain position of the occupied time-frequency resources; The time domain location of the occupied time-frequency resources; sequence generation methods; and, Sequence generation parameters.

30. The method of claim 29, wherein: In a case where at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel, the power parameter of the first pilot signal includes one or more of the following: a ratio of power of the first pilot signal sent on the first time-frequency resource to total power on the second time-frequency resource; a ratio of power at which control information of the control channel is sent on the first time-frequency resource to total power on the second time-frequency resource; a ratio of power of the first pilot signal sent on the first time-frequency resource to power of control information of the control channel sent on the first time-frequency resource; as well as, a ratio of power of control information of the control channel sent on the first time-frequency resource to power of the first pilot signal sent on the first time-frequency resource; The first time-frequency resource is any one of the at least part of the time-frequency resources; the second time-frequency resource is any one of the at least part of the time-frequency resources, or the second time-frequency resource is any one of the other time-frequency resources except the at least part of the time-frequency resources.

31. The method according to claim 29 or 30, wherein: The frequency domain position of the time-frequency resource occupied by the first pilot signal is determined according to one or more of the following parameters indicated by the first information: Frequency domain density; A frequency domain offset value; and, Frequency domain pattern.

32. The method according to any one of claims 29 to 31, wherein: The first information indicates a frequency domain position of a time-frequency resource occupied by the first pilot signal, including: The first information indicates the frequency domain position through a first bitmap; and / or, The first information indicates the frequency domain position through an identifier of a frequency domain resource.

33. The method according to any one of claims 29 to 32, wherein: The time domain position of the time-frequency resource occupied by the first pilot signal is determined according to one or more of the following parameters indicated by the first information: Time domain density; A time domain offset value; and, Time domain pattern.

34. A method according to any one of claims 29 to 33, wherein: The first information indicates a time domain position of a time-frequency resource occupied by the first pilot signal, including: The first information indicates the time domain position through a second bitmap; and / or, The first information indicates the time domain position through an identifier of a time domain resource.

35. The method according to any one of claims 29 to 34, wherein: The sequence generation parameters of the first pilot signal include one or more of the following: An identifier of a time domain resource in the time-frequency resource occupied by the first pilot signal; An identifier of a system frame number in which the first pilot signal resides; An identifier of a cell where the first pilot signal is located; An identifier of a carrier where the first pilot signal is located; an identifier of a port of the first pilot signal; a scrambling parameter of the first pilot signal; and The identifier of the control channel.

36. The method according to any one of claims 24 to 35, wherein: The first information indicates one or more of the following objects: Community; Carrier; Bandwidth part; Physical side control channel; Control resource sets; controlling a set of resource sets; and, Search space.

37. The method according to any one of claims 24 to 36, wherein: The first pilot signal is not used for one or more of the following: a transmission corresponding to a control resource set identified as a first value; a transmission corresponding to a search space identified as a second value; transmission corresponding to a control resource set corresponding to a search space identified as a third value; receiving a transmission corresponding to a search space of system information block 1; receiving a transmission corresponding to a control resource set corresponding to a search space of system information block 1; receiving a transmission corresponding to a search space of other system messages, wherein the other system messages are system messages other than system information block 1; Receiving a transmission corresponding to a control resource set corresponding to a search space of the other system message; Transmission corresponding to the paging search space; Transmission corresponding to the control resource set corresponding to the paging search space; Transmission corresponding to the random access search space; transmission corresponding to a control resource set corresponding to a random access search space; and, Transmission corresponding to the common search space.

38. The method according to any one of claims 24 to 37, wherein: In a case where the number of repeated transmissions of the control channel includes at least two, the number of the first pilot signals includes at least two; At least two of the first pilot signals maintain the same configuration in one or more of the following parameters: At least part of the time-frequency resources occupied by each of the at least two first pilot signals is used to transmit control information of the control channel; frequency domain density of the time-frequency resources occupied by each of the at least two first pilot signals; time domain density of the time-frequency resources occupied by each of the at least two first pilot signals; and The power parameters of the at least two first pilot signals respectively.

39. The method of claim 38, wherein: The time-frequency resources occupied by at least one of the at least two first pilot signals are not used to transmit the control information of the control channel, and at least part of the time-frequency resources occupied by at least another one of the first pilot signals are used to transmit the control information of the control channel.

40. The method according to any one of claims 24 to 39, wherein: The second pilot signal of the data channel scheduled by the first downlink control information DCI transmitted by the control channel maintains the same configuration as the first pilot signal in one or more of the following parameters: At least part of the time-frequency resources occupied by the second pilot signal is used to transmit data information of the data channel, and at least part of the time-frequency resources occupied by the first pilot signal is used to transmit control information of the control channel; The time-frequency resources occupied by the second pilot signal are not used to transmit data information of the data channel, and the time-frequency resources occupied by the first pilot signal are not used to transmit control information of the control channel; power parameters of the second pilot signal and the first pilot signal respectively; a method for generating sequences of the second pilot signal and the first pilot signal respectively; frequency domain density of time-frequency resources occupied by the second pilot signal and the first pilot signal respectively; The time domain density of the time-frequency resources occupied by the second pilot signal and the first pilot signal respectively.

41. The method according to any one of claims 24 to 40, wherein: Before the second device sends the first information to the first device, the method further includes: The second device receives first capability information from the first device, where the first capability information indicates that the first device supports receiving the first information; or, the first capability information indicates that the first device supports the multiple pilot signals for the control channel.

42. The method according to any one of claims 24 to 41, wherein: Before the second device sends the first information to the first device, the method further includes: The second device receives second capability information from the first device, where the second capability information indicates that the first device supports the first pilot signal, and at least part of the time-frequency resources occupied by the first pilot signal are used to transmit control information of the control channel.

43. The method according to claim 41 or 42, wherein: The first capability information and / or the second capability information is a capability for any of the following objects: Frequency band; Frequency band combination; Each band in the band combination; Each carrier on each band in the band combination; Frequency band range; The first device.

44. A method according to any one of claims 41 to 43, wherein: The first capability information and / or the second capability information includes one or more of the following: a supportable power parameter of the first pilot signal; a supportable frequency domain pattern of the first pilot signal; a supportable time domain pattern of the first pilot signal; a frequency domain density of the first pilot signal that can be supported; and The supportable time domain density of the first pilot signal.

45. The method according to any one of claims 24 to 44, wherein: The first information is carried by one or more of the following: Broadcast messages; System messages; Radio Resource Control (RRC) signaling; Media Access Control Unit MAC CE signaling; Downlink control information DCI; a random access message; and, Dedicated signaling.

46. ​​The method according to any one of claims 24 to 45, wherein: The control channel includes a downlink control channel and / or a sidelink control channel.

47. A communication device, applied to a first device, the device comprising: The first receiving unit is configured to receive first information from a second device, where the first information is used to indicate a first pilot signal of a control channel, where the first pilot signal is one or more of a plurality of pilot signals.

48. A communication device, applied to a second device, the device comprising: The second sending unit is configured to send first information to the first device, where the first information is used to indicate a first pilot signal of a control channel, and the first pilot signal is one or more of a plurality of pilot signals.

49. A communication device comprising: A memory for storing computer executable instructions; A processor, connected to the memory, configured to implement the method of any one of claims 1 to 23 by executing the computer executable instructions; or, to implement the method of any one of claims 24 to 46.

50. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 23, or executes a method as claimed in any one of claims 24 to 46.

51. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by at least one processor, implements the method according to any one of claims 1 to 23, or implements the method according to any one of claims 24 to 46.

52. A computer program product, comprising a computer storage medium storing a computer program, wherein the computer program comprises instructions executable by at least one processor, and when the instructions are executed by the at least one processor, the method of any one of claims 1 to 23 is implemented, or the method of any one of claims 24 to 46 is implemented.

53. A computer program, wherein the computer program enables a computer to execute the method according to any one of claims 1 to 23, or to implement the method according to any one of claims 24 to 46.

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