Communication method, apparatus and device, and computer readable storage medium

Abstract

Disclosed in an embodiment of the present invention are a communication method, apparatus and device, and a computer readable storage medium, the method comprising: a network device receiving first information sent by a terminal, the first information at least comprising first indication information and first capability information; the first indication information is obtained by updating a rank parameter of a downlink channel matrix by the terminal according to the hardware switching capability of an antenna, and the first capability information is used for representing the hardware switching capability; the network equipment determines a first parameter based on the first information, wherein the first parameter is related to a spectrum feature of a receiving end; and sending second information to the terminal, wherein the second information at least comprises the first parameter.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a communication method, apparatus, device and computer-readable storage medium. Background Art

[0002] In the traditional Long Term Evolution (LTE) system and the fifth generation mobile communication technology (5G) new radio (NR) system, the receiver and transmitter do not need to notify each other of filter information, and the transmit and receive matching filters only need to meet the transmission spectrum template and spurious radiation requirements.

[0003] The virtual multiple-input multiple-output (MIMO) system achieves higher spatial multiplexing capabilities by changing the dimension of the transmission channel matrix. In the virtual MIMO system, the upsampling multiple at the receiving end will change the receiving end sampling frequency. At this time, the design of the transmit and receive filters between the transmit and receive ends will affect the demodulation performance of the virtual MIMO system after the receiving end sampling frequency changes. Summary of the invention

[0004] To solve the existing technical problems, the embodiments of the present invention provide a communication method, an apparatus, a device and a computer-readable storage medium.

[0005] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides a communication method, including:

[0007] The network device receives first information sent by the terminal, where the first information includes at least first indication information and first capability information; the first indication information is obtained by the terminal updating a rank parameter of a downlink channel matrix according to a hardware switching capability of an antenna, and the first capability information is used to characterize the hardware switching capability;

[0008] The network device determines a first parameter based on the first information, where the first parameter is related to a spectrum characteristic of a receiving end; and sends second information to the terminal, where the second information at least includes the first parameter.

[0009] In the above solution, the network device determines the first parameter based on the first information, including: the network device determines a first upsampling factor based on the first indication information and the first capability information, and determines the first parameter according to the first upsampling factor.

[0010] In the above scheme, the network device determines the first upsampling factor based on the first indication information and the first capability information, including: the network device determines the first upsampling factor based on the first indication information, the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points, wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

[0011] In the above scheme, the first information also includes at least one upsampling factor; the network device determines the first parameter based on the first information, including: the network device selects a first upsampling factor from the at least one upsampling factor according to the first indication information, and determines the first parameter according to the first upsampling factor; wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

[0012] In the above solution, the second information also includes the first upsampling factor.

[0013] In the above scheme, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0014] In the above solution, the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

[0015] In the above solution, the spectrum characteristics at least include bandwidth and / or adjacent band leakage.

[0016] In the above scheme, the first parameter includes at least one of the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filtering effect, and frequency domain coefficient corresponding to the filtering effect.

[0017] In the above scheme, the network device receives the first information sent by the terminal, including: the network device receives the first wireless resource configuration RRC signaling sent by the terminal, and the first RRC signaling includes the first information; or, the network device receives the uplink control information UCI sent by the terminal, and the UCI includes the first information; or, the network device receives the first system message sent by the terminal, and the first system message includes the first capability information and / or the at least one upsampling factor.

[0018] In the above scheme, sending the second information to the terminal includes: the network device sends a second system message to the terminal, and the second system message includes the first parameter; or, the network device sends a second RRC signaling to the terminal, and the second RRC signaling includes the first parameter and / or the first upsampling factor; or, the network device sends downlink control information DCI to the terminal, and the DCI includes the first parameter and / or the first upsampling factor.

[0019] In a second aspect, an embodiment of the present invention provides a communication method, including:

[0020] The terminal updates the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna, obtains the first indication information, and sends the first information to the network device, where the first information at least includes the first indication information and the first capability information; the first capability information is used to characterize the hardware switching capability; the first information is used by the network device to determine the first parameter; the first parameter is related to the spectrum characteristics of the receiving end;

[0021] The terminal receives second information sent by the network device, where the second information at least includes the first parameter.

[0022] In the above solution, the first information also includes at least one upsampling factor.

[0023] In the above solution, the second information also includes a first upsampling factor, and the first upsampling factor is determined by the network device according to the first information or selected by the network device from the at least one upsampling factor.

[0024] In the above solution, the method also includes: the terminal determines the at least one upsampling factor based on the first capability information.

[0025] In the above scheme, the terminal determines the at least one upsampling factor based on the first capability information, including: the terminal determines the at least one upsampling factor according to the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points.

[0026] In the above scheme, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0027] In the above solution, the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

[0028] In the above solution, the spectrum characteristics at least include bandwidth and / or adjacent band leakage.

[0029] In the above scheme, the first parameter includes at least one of the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filtering effect, and frequency domain coefficient corresponding to the filtering effect.

[0030] In the above scheme, sending the first information to the network device includes: the terminal sends a first RRC signaling to the network device, and the first RRC signaling includes the first information; or, the terminal sends a UCI to the network device, and the UCI includes the first information; or, the terminal sends a first system message to the network device, and the first system message includes the first capability information and / or the at least one upsampling factor.

[0031] In the above scheme, the terminal receives the second information sent by the network device, including: the terminal receives a second system message sent by the network device, and the second system message includes the first parameter; or, the terminal receives a second RRC signaling sent by the network device, and the second RRC signaling includes the first parameter and / or the first upsampling factor; or, the terminal receives a DCI sent by the network device, and the DCI includes the first parameter and / or the first upsampling factor.

[0032] In a third aspect, an embodiment of the present invention provides a communication device, including a first communication unit and a first processing unit; wherein:

[0033] The first communication unit is used to receive first information sent by the terminal, where the first information includes at least first indication information and first capability information; the first indication information is obtained by the terminal updating a rank parameter of a downlink channel matrix according to a hardware switching capability of the antenna, and the first capability information is used to characterize the hardware switching capability;

[0034] The first processing unit is configured to determine a first parameter based on the first information, where the first parameter is related to a spectrum feature of a receiving end;

[0035] The first communication unit is further used to send second information to the terminal, where the second information at least includes the first parameter.

[0036] In the above solution, the first processing unit is used to determine the first upsampling factor based on the first indication information and the first capability information, and determine the first parameter according to the first upsampling factor.

[0037] In the above scheme, the first processing unit is used to determine the first upsampling factor based on the first indication information, the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points, wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

[0038] In the above scheme, the first information also includes at least one upsampling factor; the first processing unit is used to select a first upsampling factor from the at least one upsampling factor according to the first indication information, and determine the first parameter according to the first upsampling factor; wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

[0039] In the above solution, the second information also includes the first upsampling factor.

[0040] In the above scheme, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0041] In the above solution, the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

[0042] In the above solution, the spectrum characteristics at least include bandwidth and / or adjacent band leakage.

[0043] In the above scheme, the first parameter includes at least one of the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filtering effect, and frequency domain coefficient corresponding to the filtering effect.

[0044] In the above scheme, the first communication unit is used to receive the first RRC signaling sent by the terminal, and the first RRC signaling includes the first information; or, the first communication unit is used to receive the UCI sent by the terminal, and the UCI includes the first information; or, the first communication unit is used to receive the first system message sent by the terminal, and the first system message includes the first capability information and / or the at least one upsampling factor.

[0045] In the above scheme, the first communication unit is used to send a second system message to the terminal, and the second system message includes the first parameter; or, the first communication unit is used to send a second RRC signaling to the terminal, and the second RRC signaling includes the first parameter and / or the first upsampling factor; or, the first communication unit is used to send downlink control information DCI to the terminal, and the DCI includes the first parameter and / or the first upsampling factor.

[0046] In a fourth aspect, an embodiment of the present invention provides a communication device, comprising a second processing unit and a second communication unit; wherein:

[0047] The second processing unit is used to update the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna to obtain the first indication information;

[0048] The second communication unit is used to send first information to the network device, the first information at least including first indication information and first capability information; the first capability information is used to characterize the hardware switching capability; the first information is used by the network device to determine a first parameter; the first parameter is related to the spectrum characteristics of the receiving end;

[0049] The second communication unit is further used to receive second information sent by the network device, where the second information at least includes the first parameter.

[0050] In the above solution, the first information also includes at least one upsampling factor.

[0051] In the above solution, the second information also includes a first upsampling factor, and the first upsampling factor is determined by the network device according to the first information or selected by the network device from the at least one upsampling factor.

[0052] In the above solution, the device also includes a second processing unit, which is used to determine the at least one upsampling factor based on the first capability information.

[0053] In the above scheme, the second processing unit is used to determine the at least one upsampling factor according to the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points.

[0054] In the above scheme, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0055] In the above solution, the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

[0056] In the above solution, the spectrum characteristics at least include bandwidth and / or adjacent band leakage.

[0057] In the above scheme, the first parameter includes at least one of the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filtering effect, and frequency domain coefficient corresponding to the filtering effect.

[0058] In the above scheme, the second communication unit is used to send a first RRC signaling to the network device, and the first RRC signaling includes the first information; or, the second communication unit is used to send a UCI to the network device, and the UCI includes the first information; or, the second communication unit is used to send a first system message to the network device, and the first system message includes the first capability information and / or the at least one upsampling factor.

[0059] In the above scheme, the second communication unit is used to receive a second system message sent by the network device, and the second system message includes the first parameter; or, the second communication unit is used to receive a second RRC signaling sent by the network device, and the second RRC signaling includes the first parameter and / or the first upsampling factor; or, the second communication unit is used to receive a DCI sent by the network device, and the DCI includes the first parameter and / or the first upsampling factor.

[0060] In a fifth aspect, an embodiment of this aspect provides a communication device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method described in the first aspect are implemented; or, when the processor executes the program, the steps of the method described in the second aspect are implemented.

[0061] In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the method described in the first aspect; or, when executed by a processor, implement the steps of the method described in the second aspect.

[0062] Embodiments of the present invention provide a communication method, apparatus, device and computer-readable storage medium, wherein a network device receives first indication information and first capability information reported by a terminal, wherein the first indication information is obtained by the terminal updating a rank parameter of a downlink channel matrix according to a hardware switching capability, and the first capability information is used to characterize the hardware switching capability of the terminal antenna. The network device determines a first parameter related to the spectrum characteristics of a receiving end based on the first indication information and the first capability information, and notifies the terminal of the first parameter. The terminal can design a receiving end matching filter based on the first parameter, and can obtain the rank parameter of the downlink channel matrix updated on the terminal side in real time when the channel information is rich, and determine the parameters related to the spectrum characteristics of the receiving end according to the rank parameter of the downlink channel matrix updated by the terminal and the hardware switching capability of the terminal, which is conducive to designing a better performance transceiver matching filter for the communication system and improving the demodulation performance of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 The communication method of the present invention is shown in FIG. Figure 1 ;

[0064] Figure 2 An example diagram of a spectrum radiation mask and spurious radiation of a transceiver filter in the related art;

[0065] Figure 3 The communication method of the present invention is shown in FIG. Figure 2 ;

[0066] Figure 4 The communication method of the present invention is shown in FIG. Figure 3 ;

[0067] Figure 5 A hardware structure example diagram of a virtual MIMO system in the related art;

[0068] Fig. 6A A filter parameter schematic diagram of Example 1 of applying the communication method according to an embodiment of the present invention to a virtual MIMO system;

[0069] Figure 6B A schematic diagram of filter time-domain tap coefficients in Example 1 of applying the communication method according to an embodiment of the present invention to a virtual MIMO system;

[0070] Fig. 7A A filter parameter schematic diagram of Example 2 of applying the communication method according to an embodiment of the present invention to a virtual MIMO system;

[0071] Figure 7B A frequency domain schematic diagram of a filter in Example 2 of applying the communication method according to an embodiment of the present invention to a virtual MIMO system;

[0072] Figure 8 The structure diagram of the communication device according to the embodiment of the present invention is shown in FIG. Figure 1 ;

[0073] Fig. 9 The structure diagram of the communication device according to the embodiment of the present invention is shown in FIG. Figure 2 ;

[0074] Fig.10 The figure is a schematic diagram of the hardware structure of the communication device according to the embodiment of the present invention. DETAILED DESCRIPTION

[0075] Before elaborating on the communication method according to the embodiment of the present invention, a brief introduction to the related technology is first given.

[0076] In the field of communications, spatial multiplexing technology refers to sending different data on different antennas, also known as spatial multiplexing. The standard for measuring spatial multiplexing is to see how many different data a system can send at most at each moment, which is called "degree of freedom", or Rank. The larger the Rank, the greater the multiplexing gain. Each physical antenna of the terminal can receive signals from all beams. The number of antennas of the terminal determines the maximum number of scheduled streams, but the Rank must be less than the minimum of the number of transmitting antennas and the number of receiving antennas.

[0077] The Multiple-Input Multiple-Output (MIMO) system increases the data transmission rate by using multiple antennas to simultaneously send and receive multiple data streams on the same channel. To solve the problem of the limited number of antennas on the terminal side, related technologies have extended the MIMO technology and proposed the concept of virtual MIMO, that is, each terminal sends a data stream, but two or more data streams occupy the same time-frequency resources. From the perspective of the base station receiving side, data streams from different terminals can be regarded as data streams from different antennas on the same terminal, thus forming a virtual MIMO system.

[0078] Virtual MIMO systems can achieve higher spatial multiplexing capabilities by changing the dimension of the transmission channel matrix. However, the upsampling multiple at the receiving end of the MIMO system will change the sampling frequency at the receiving end, affecting the design of the virtual MIMO system's transceiver filter and channel estimation. In addition, the number of sampling points after upsampling interpolation will also affect different implementation schemes of the virtual MIMO system and affect the demodulation performance.

[0079] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0080] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0081] In the embodiments of the present application, the term "at least one" refers to one or more than one, and "plurality" refers to two or more than two, and other quantifiers are similar.

[0082] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, applicable systems may be global system of mobile communication (GSM, Global System of Mobile Communication) system, code division multiple access (CDMA, Code Division Multiple Access) system, wideband code division multiple access (WCDMA, Wide band Code Division Multiple Access), general packet radio service (GPRS, General Packet Radio Service) system, long term evolution (LTE, Long Term Evolution) system, LTE frequency division duplex (FDD, Frequency Division Duplex) system, LTE time division duplex (TDD, Time Division Duplex) system, advanced long term evolution (LTE-A, Long Term Evolution Advanced) system, universal mobile system (UMTS, Universal Mobile Telecommunication System), global interconnection microwave access (WiMAX, Worldwide interoperability for Microwave Access) system, 5G new air interface (NR, New Radio) system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0083] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (BTS, Base Transceiver Station) in GSM or CDMA, or a network device (NodeB) in WCDMA, or an evolved network device (eNB or e-NodeB, evolutionary Node B) in an LTE system, a 5G base station (gNB) in a 5G network architecture (next generation system), or a home evolved Node B (HeNB, Home evolved Node B), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU, Centralized Unit) node and a distributed unit (DU, Distributed Unit) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0084] The terminal or terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, a user device, etc., but is not limited in the embodiments of the present application.

[0085] An embodiment of the present invention provides a communication method. Figure 1 The communication method of the present invention is shown in FIG. Figure 1 ,like Figure 1 As shown, the method includes:

[0086] Step 101: A network device receives first information sent by a terminal, where the first information includes at least first indication information and first capability information; the first indication information is obtained by the terminal updating a rank parameter of a downlink channel matrix according to a hardware switching capability of an antenna, and the first capability information is used to characterize the hardware switching capability;

[0087] Step 102: The network device determines a first parameter based on the first information, where the first parameter is related to a spectrum characteristic of a receiving end; and sends second information to the terminal, where the second information at least includes the first parameter.

[0088] In this embodiment, the network device receives the first indication information and the first capability information reported by the terminal, wherein the first capability information is used to characterize the hardware switching capability of the terminal antenna, and the first indication information is used to indicate the terminal to update the rank parameter of the downlink channel matrix according to the hardware switching capability to obtain a new rank parameter.

[0089] In some embodiments, the first indication information may also be called rank, rank parameter, rank indication, rank indicator, Rank Index, RI, rank of the downlink channel matrix, rank parameter of the downlink channel matrix, rank indication of the downlink channel matrix, rank indicator of the downlink channel matrix, Rank Index of the downlink channel matrix, RI of the downlink channel matrix, updated rank, updated rank parameter, updated rank indication, updated rank indicator, updated Rank Index, updated RI, updated rank of the downlink channel matrix, updated rank parameter of the downlink channel matrix, updated rank indication of the downlink channel matrix, updated rank indicator of the downlink channel matrix, updated Rank Index of the downlink channel matrix, updated RI of the downlink channel matrix, etc., and the present invention is not limited thereto.

[0090] In some embodiments, the first capability information is related to the conversion of the antenna characteristic state of the terminal, wherein the antenna characteristic state may be, for example, the amplitude, phase, impedance, deflection angle, etc. of the antenna. Exemplarily, the first capability information may be used to characterize at least one of the following: the switching capability of the terminal antenna between different amplitudes, the switching capability of the terminal antenna between different phases, the switching capability of the terminal antenna between different impedances, the switching capability of the terminal antenna between different deflection angles, etc. Optionally, the first capability information is used to characterize the time information related to the hardware switching capability of the terminal, and the first capability information may include at least one of the following: the time information of the terminal antenna switching from the first amplitude to the second amplitude, the time information of the terminal antenna switching from the first phase to the second phase, the time information of the terminal antenna switching from the first impedance to the second impedance, the time information of the terminal antenna switching from the first deflection angle to the second deflection angle, etc.

[0091] As an example, the first capability information may be the response time of the hardware switching device of the terminal antenna to the switching signal, such as the fastest response time of the RF switching switch, or the time for the analog shifter corresponding to the terminal antenna to respond to the shift signal and complete the shift, etc.

[0092] In step 102, the network device determines a first parameter based on the first indication information and the first capability information, and the first parameter is related to the spectrum characteristics of the receiving end. Exemplarily, the spectrum characteristics include at least bandwidth and / or adjacent band leakage. It should be noted that the receiving end can be either a network device or a terminal, that is, a network device as a receiving end or a terminal as a receiving end. In some embodiments, the receiving end may also be referred to as a receiving end, a receiving end device, a receiving device, a receiving end device, etc., which is not limited in the present invention.

[0093] In the related art, the transceiver ends of the communication system do not need to notify each other of filter information, and the transceiver filters only need to meet the transmission spectrum template and spurious radiation requirements. Figure 2 is an example diagram of the spectrum radiation template and spurious radiation of the transceiver filter in the related art, Figure 2 In "F1", "F" stands for Frequency, and the number "1" stands for the Signal number. In "M1", "M" stands for Margin, and the number "1" stands for the Signal number. Figure 2 From the center frequency to the left, the spectrum template segments included in the spectrum template are arranged as Lower1, Lower2, Lower3 and Lower4, and to the right are Upper1, Upper2, Upper3 and Upper4. The value corresponding to the M1 column represents the minimum value of the difference between each frequency point in each template segment and the actual signal spectrum in each segment. If the difference is negative, the actual signal exceeds the template, such as Figure 2 The circled area in the middle; the value corresponding to the F1 column indicates the frequency of the M1 point in each segment of the spectrum template corresponding to the relative center frequency point in the template. However, after the terminal updates the rank parameter of the downlink channel matrix according to its own hardware switching capability, it may affect the sampling frequency of the receiving end, thereby affecting the design of the transceiver filter.

[0094] In this embodiment, the network device sends a first parameter to the terminal, where the first parameter is related to the spectrum characteristics of the receiving end, and the first parameter can be used for the receiving end to design a transceiver matching filter. Thus, the network device notifies the terminal of relevant information for designing a matching filter for the receiving end, which is beneficial to improving the demodulation performance of the system.

[0095] Using the communication method of the embodiment of the present invention, a network device receives first indication information and first capability information reported by a terminal, wherein the first indication information is obtained by the terminal updating the rank parameter of the downlink channel matrix according to the hardware switching capability, and the first capability information is used to characterize the hardware switching capability of the terminal antenna. The network device determines a first parameter related to the spectrum characteristics of the receiving end based on the first indication information and the first capability information, and notifies the terminal of the first parameter. The terminal can design a receiving end matching filter based on the first parameter, and can obtain the rank parameter of the downlink channel matrix updated on the terminal side in real time when the channel information is rich, and determine the parameters related to the spectrum characteristics of the receiving end according to the rank parameter of the downlink channel matrix updated by the terminal and the hardware switching capability of the terminal, which is conducive to designing a better performance transceiver matching filter for the communication system and improving the demodulation performance of the communication system.

[0096] In some embodiments, the first parameter may include at least one of the filter's cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filter effect, and frequency domain coefficient corresponding to the filter effect. Exemplarily, the first parameter may include the filter's cutoff frequency, filter length, filter roll-off factor, filter type, and system sampling frequency, etc., and the terminal may uniquely determine the filter after receiving the first parameter; or, the first parameter may include the system sampling frequency, filter length, filter roll-off factor, and filter coefficient, etc., wherein the filter coefficient may be, for example, a time domain coefficient or a frequency domain coefficient.

[0097] In some optional embodiments of the present invention, the network device determines the first parameter based on the first information, which may include: the network device determines a first upsampling factor based on the first indication information and the first capability information, and determines the first parameter according to the first upsampling factor.

[0098] In various embodiments of the present invention, the upsampling factor represents the ratio between the sampling rate of the signal after interpolation and the sampling rate of the original signal when the transmitting end performs signal upsampling. In the embodiments of the present invention, the upsampling factor may also be referred to as an upsampling multiple, an oversampling factor, an oversampling multiple, an upsampling factor, an upsampling multiple, an upsampling multiple, an upsampling factor, an oversampling multiple, an oversampling factor, an upsampling factor, an upsampling multiple, etc., and the present invention does not limit this.

[0099] In some embodiments, the first information further includes at least one upsampling factor, and / or the first capability information includes at least one upsampling factor; the network device determines the first parameter based on the first information, which may include: the network device selects a first upsampling factor from the at least one upsampling factor according to the first indication information, and determines the first parameter according to the first upsampling factor; wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information. In this embodiment, the terminal may also report at least one selectable upsampling factor when reporting the first capability information and the first indication information, and / or the terminal may report at least one selectable upsampling factor to the network device through the first capability information, and the network device selects the first upsampling factor from at least one upsampling factor according to the first indication information. In the related art, in order to ensure that the sampling point is not distorted, the frequency domain signal sent by the transmitting end of the communication system is generally sent after upsampling, orthogonal frequency division multiplexing (OFDM) modulation, and a non-ideal filter formed by the transmitting end; and is received after matched filtering, OFDM demodulation and downsampling at the receiving end. Among them, upsampling (or oversampling, upsampling, etc.) will increase the sampling rate of the signal, usually to increase the resolution or bandwidth of the signal, which can be achieved by interpolation, that is, inserting new sampling points between the sampling points of the original signal to increase the sampling rate. It should be noted that upsampling will affect the spectrum of the signal, for example, it will produce periodic spectral lines on the spectrum of the original signal. Therefore, when upsampling, appropriate filtering is required to eliminate these effects. It can be understood that the digital signal processing system that has undergone upsampling, downsampling, shaping non-ideal filters, and matched filters has relatively low requirements for low-pass filters in hardware implementation. If upsampling is not performed, the filtering effect requirements for the filter during filtering will be very steep, and the hardware indicators will be more stringent.

[0100] In some embodiments, the network device and the terminal are applied to a virtual MIMO system. The network device determines a new upsampling factor (i.e., a first upsampling factor) based on the rank parameter of the updated downlink channel matrix reported by the terminal and the first capability information characterizing the hardware switching capability. The change of the upsampling factor will affect the sampling frequency of the receiving end, and further affect the design of the transceiver matching filter and channel estimation. At the same time, the number of sampling points after upsampling interpolation based on the first upsampling factor will also affect different implementation schemes of the virtual MIMO system and affect the demodulation performance. In this embodiment, the network device determines the first parameter related to the spectrum characteristics of the receiving end according to the first upsampling factor, and notifies the terminal of the first parameter, which is conducive to the virtual MIMO system to design a better performance transceiver matching filter, and design a suitable allocation scheme of the interpolated sampling points to each virtual antenna to provide demodulation performance.

[0101] In one embodiment, the network device determines a first upsampling factor based on the first indication information and the first capability information, thereby determining a new system sampling frequency after upsampling interpolation, and the network device can determine a first parameter related to the spectrum characteristics of the receiving end according to the first upsampling factor or the new system sampling frequency. Exemplarily, the first parameter may include the new system sampling frequency, or the first parameter may include a cutoff frequency of a matching filter at the receiving end, a filter length, a roll-off factor, a filter type, a time domain coefficient corresponding to a filtering effect, a frequency domain coefficient corresponding to a filtering effect, etc.

[0102] In some embodiments, determining the first parameter according to the first upsampling factor may include: the network device determines or selects the first parameter corresponding to the first upsampling factor based on a first preset rule. Exemplarily, the first preset rule may be, for example, a first preset relationship table, which includes first parameters corresponding to each of the multiple upsampling factors, for example, filter lengths, roll-off factors, or filter coefficients corresponding to each of the multiple upsampling factors.

[0103] In some embodiments, the second information may further include the first up-sampling factor. That is, the network device sends the first parameter and the first up-sampling factor to the terminal.

[0104] In some optional embodiments of the present invention, the network device determines the first upsampling factor based on the first indication information and the first capability information, which may include: the network device determines the first upsampling factor according to the first indication information, the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points, wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information. In this embodiment, the first upsampling factor is greater than or equal to the updated rank parameter, wherein the updated rank parameter is obtained after the terminal updates the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna.

[0105] In some embodiments, the network device determines the first upsampling factor according to the first indication information, the first capability information, the subcarrier spacing, and the second parameter indicating the number of system Fourier transform points, which may include: determining a first condition according to the first capability information, the subcarrier spacing, and the second parameter, and determining a second condition according to the first indication information, and determining the upsampling factor that satisfies the first condition and the second condition. The second condition is that the first upsampling factor is greater than or equal to the (updated) rank parameter value indicated by the first indication information.

[0106] As an optional implementation, the first capability information may be time information related to hardware switching of the terminal antenna, such as the time for the analog shifter of the antenna to respond to the shift signal and complete the shift. The first condition may be, for example:

[0107]

[0108] Among them, T 切换 Represents the first capability information, that is, the time information related to the hardware switching of the terminal antenna, SCS represents the subcarrier spacing, FFT_size represents the second parameter, that is, the number of system Fourier transform points, US represents the first upsampling factor, and k is an integer. It can be understood that the product of the first upsampling factor US, the number of system Fourier transform points FFT_size and the subcarrier spacing SCS is the updated system sampling frequency, that is, the new system sampling frequency after upsampling based on the first upsampling factor. In this embodiment, the first condition, that is, the inverse of the updated system sampling frequency (that is, the system sampling interval) should be greater than or equal to the first capability information (that is, the time information related to the hardware switching capability of the terminal antenna), and the product of the first upsampling factor US and the number of system Fourier transform points FFT_size should be a power of 2. Exemplarily, T 切换When the frequency is 10 nanoseconds (ns), the SCS is 30000 Hz, and the FFT_size is 512 points, FFT_size×US should not exceed 3333, that is, 1 / (30kHz×10ns). At the same time, the value of FFT_size×US should be a power of 2, thereby determining that the selectable first upsampling factor is 2 or 4. For example, when the first upsampling factor is 2, the sampling frequency after the system update is 30kHz×1024=30.72MHz (megahertz), and the sampling interval is about 32ns, which is greater than 10ns and meets the hardware requirements of the terminal antenna; when the first upsampling factor is 4, the sampling frequency after the system update is 30kHz×2048=61.44MHz, and the sampling interval is about 16ns, which also meets the hardware requirements of the terminal antenna. Further, the network device can determine the first upsampling factor according to the second condition, or select the first upsampling factor from multiple upsampling factors that meet the first condition and the second condition.

[0109] Using the communication method of this embodiment, the network device determines an optional upsampling factor based on the rank parameter, subcarrier spacing and system Fourier transform point number of the updated downlink channel matrix reported by the terminal, and determines or selects a suitable first upsampling factor from the optional upsampling factors based on the first capability information characterizing the hardware switching capability of the terminal antenna, which is beneficial to the design of the transceiver matching filter and improves the system demodulation performance.

[0110] Based on the above embodiments, an embodiment of the present invention further provides a communication method. Figure 3 The communication method of the present invention is shown in FIG. Figure 2 ,like Figure 3 As shown, the method includes:

[0111] Step 201: A network device receives first information sent by a terminal, where the first information includes first indication information, first capability information, and at least one upsampling factor; wherein the first indication information is obtained by the terminal updating a rank parameter of a downlink channel matrix according to a hardware switching capability of an antenna, and the first capability information is used to characterize the hardware switching capability;

[0112] Step 202: The network device selects a first upsampling factor from the at least one upsampling factor according to the first indication information, determines a first parameter according to the first upsampling factor, wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information; and sends second information to the terminal, wherein the second information includes at least the first parameter.

[0113] In this embodiment, step 201 may include: a network device receives first information sent by a terminal, where the first information includes first indication information, first capability information, and at least one upsampling factor.

[0114] In some optional embodiments of the present invention, the step 201 may include: the network device receives the first information sent by the terminal, the first information includes the first indication information and the first capability information, wherein the first capability information includes at least one upsampling factor; or, the step 201 may include: the network device receives the first information sent by the terminal, the first information includes the first indication information, the first capability information and at least one upsampling factor, wherein the first capability information includes the at least one upsampling factor. That is, the first capability information may include at least one upsampling factor.

[0115] In this embodiment, the at least one upsampling factor is a selectable upsampling factor determined by the terminal. Optionally, the at least one upsampling factor can be determined by the terminal based on the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points; or, the at least one upsampling factor can be determined by the terminal based on a second preset rule and the first capability information. For example, the second preset rule can be a second preset relationship table, and the second preset relationship table includes at least one upsampling factor corresponding to each of multiple first capability information.

[0116] As an optional implementation, each upsampling factor of the at least one upsampling factor is greater than or equal to the (updated) rank parameter value indicated by the first indication information.

[0117] In some embodiments, determining the first parameter according to the first upsampling factor may include: determining a third parameter related to a system sampling frequency according to the first upsampling factor, and determining the first parameter based on the third parameter. Exemplarily, the third parameter may be, for example, a sampling frequency or a sampling interval, and determining the first parameter related to a spectrum characteristic of the receiving end according to the sampling frequency or the sampling interval, so as to design a suitable transceiver matched filter.

[0118] In some embodiments, the second information may further include the first up-sampling factor. That is, the network device sends the first parameter and the first up-sampling factor to the terminal.

[0119] In some optional embodiments of the present invention, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0120] In some embodiments, when the first capability information includes the first terminal type, the first capability information also includes the at least one upsampling factor. In this embodiment, the first capability information characterizing the hardware switching capability of the terminal antenna is reported to the network device by the terminal type, and the at least one upsampling factor can be reported to the network device along with the terminal capability.

[0121] As an optional implementation, the first capability information may include time information when the antenna state of the terminal switches from a first state to a second state, and the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance, and antenna deflection angle. That is, the first capability information may include at least one of the following: time information when the antenna amplitude of the terminal switches from a first amplitude to a second amplitude, time information when the antenna phase of the terminal switches from a first phase to a second phase, time information when the antenna impedance of the terminal switches from a first impedance to a second impedance, and time information when the antenna deflection angle of the terminal switches from a first angle to a second angle.

[0122] As another optional implementation, the first capability information may include a first terminal type, and different terminal types correspond to different time information at which the antenna state of the terminal switches from the first state to the second state, and the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle. In this embodiment, the time information may be relative information, such as information after normalization of time information corresponding to different terminals and representing the same hardware switching capability, and the terminals are classified according to the time information to obtain different terminal types. Exemplarily, the terminals may be classified according to the time information when the antenna amplitude switches from the first amplitude to the second amplitude to obtain multiple terminal types; or, the terminals may be classified according to the time information when the antenna phase switches from the first phase to the second phase to obtain multiple terminal types; or, the terminals may be classified according to the time information when the antenna impedance switches from the first impedance to the second impedance to obtain multiple terminal types; or, the terminals may be classified according to the time information when the antenna deflection angle switches from the first angle to the second angle to obtain multiple terminal types.

[0123] In one embodiment, the terminal antenna is connected to an analog phase shifter, and antenna phase switching can be completed through the analog phase shifter. The first capability information can be the absolute time information of the analog phase shifter responding to the shifting signal and completing the shifting, such as 10ns, or it can be the terminal type corresponding to different relative time information. For example, the time for the analog phase shifter to respond to the shifting signal and complete the shifting in terminals of different manufacturers is normalized, and the terminals are classified according to the normalized time to obtain multiple terminal types. For example, the first time or the first time range is normalized to a first value, corresponding to the first terminal type, the second time or the second time range is normalized to a second value, corresponding to the second terminal type, and so on.

[0124] In some embodiments, the spectrum characteristics include at least bandwidth and / or adjacent band leakage. In this embodiment, the first parameter is a parameter related to the spectrum characteristics such as bandwidth and / or adjacent band leakage of the receiving end. Exemplarily, the first parameter may include at least one of the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filtering effect, and frequency domain coefficient corresponding to the filtering effect. It should be noted that the system sampling frequency is the new system sampling frequency after upsampling based on the first upsampling factor, that is, the product of the subcarrier spacing, the second parameter representing the number of Fourier transform points, and the first upsampling factor.

[0125] As an example, the first parameter may include at least the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, etc., and the terminal may uniquely determine a filter based on the first parameters; or, the first parameter may include time domain coefficients corresponding to the filtering effect and / or frequency domain coefficients corresponding to the filtering effect, and the terminal may design a corresponding receiving-end matching filter based on the first parameters.

[0126] Using the communication method of the embodiment of the present invention, a network device receives the rank parameter of the updated downlink channel matrix and at least one upsampling factor reported by the terminal, wherein the at least one upsampling factor can be reported along with the first capability information characterizing the hardware switching capability of the terminal antenna. The network device selects the first upsampling factor from the at least one upsampling factor, and notifies the terminal of the first parameter related to the spectrum characteristics of the receiving end and the first upsampling factor, which is conducive to the transceiver end designing a transceiver matching filter with better performance and improving the demodulation performance of the communication system.

[0127] In some optional embodiments of the present invention, the network device receives the first information sent by the terminal, which may include: the network device receives the first RRC signaling sent by the terminal, the first RRC signaling includes the first information; or, the network device receives the UCI sent by the terminal, the UCI includes the first information; or, the network device receives the first system message sent by the terminal, the first system message includes the first capability information and / or the at least one upsampling factor.

[0128] In this embodiment, the first indication information may be reported to the network device via RRC signaling or UCI, and the first capability information and the at least one upsampling factor may be reported to the network device via system messages, RRC signaling or UCI.

[0129] In some embodiments, the network device receives a first RRC signaling sent by a terminal, and the first RRC signaling includes the first indication information and the first capability information; or, the first RRC signaling includes the first indication information, the first capability information and the at least one upsampling factor; or, the first RRC signaling includes the first indication information and the first capability information, and the first capability information includes the at least one upsampling factor.

[0130] In some embodiments, the network device receives UCI sent by the terminal, and the UCI includes the first indication information and the first capability information; or, the UCI includes the first indication information, the first capability information and the at least one upsampling factor; or, the UCI includes the first indication information and the first capability information, and the first capability information includes the at least one upsampling factor.

[0131] In some embodiments, the network device receives a first system message sent by a terminal, wherein the first system message includes the first capability information; or, the first system message includes the first capability information, wherein the first capability information includes the at least one upsampling factor.

[0132] In some optional embodiments of the present invention, the sending of the second information to the terminal may include: the network device sending a second system message to the terminal, the second system message including the first parameter; or, the network device sending a second RRC signaling to the terminal, the second RRC signaling including the first parameter and / or the first upsampling factor; or, the network device sending downlink control information DCI to the terminal, the DCI including the first parameter and / or the first upsampling factor.

[0133] In this embodiment, the first parameter may be sent to the terminal via a system message, RRC signaling or DCI, and the first upsampling factor may be sent to the terminal via RRC signaling or DCI.

[0134] In some embodiments, the network device sends a second system message to the terminal, wherein the second system message includes the first parameter. The network device may also send a second RRC signaling to the terminal, wherein the second RRC signaling includes the first upsampling factor; or, the network device may also send a DCI to the terminal, wherein the DCI includes the first upsampling factor.

[0135] In some embodiments, the network device sends a second RRC signaling to the terminal, wherein the second RRC signaling includes the first parameter; the network device may also send a DCI to the terminal, wherein the DCI includes the first upsampling factor. Alternatively, the network device sends a second RRC signaling to the terminal, wherein the second RRC signaling includes the first parameter and the first upsampling factor.

[0136] In some embodiments, the network device sends a DCI to the terminal, wherein the DCI includes the first parameter; the network device may also send a second RRC signaling to the terminal, wherein the second RRC signaling includes the at least one upsampling factor. Alternatively, the network device sends a DCI to the terminal, wherein the DCI includes the first parameter and the first upsampling factor.

[0137] The present invention also provides a communication method. Figure 4 The communication method of the present invention is shown in FIG. Figure 3 ,like Figure 4 As shown, the method includes:

[0138] Step 301: The terminal updates the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna, obtains first indication information, and sends first information to the network device, where the first information at least includes the first indication information and first capability information; the first capability information is used to characterize the hardware switching capability; the first information is used by the network device to determine a first parameter; the first parameter is related to the spectrum characteristics of the receiving end;

[0139] Step 302: The terminal receives second information sent by the network device, where the second information at least includes the first parameter.

[0140] In this embodiment, the relevant description of the first information and the second information can be specifically referred to the relevant description of the first information and the second information in the aforementioned embodiment, and will not be repeated here to save space.

[0141] By adopting the communication method of the embodiment of the present invention, the terminal reports the rank parameter of the updated downlink channel matrix and the first capability information characterizing the hardware switching capability of the terminal antenna to the network device, and receives the first parameter related to the spectrum characteristics of the receiving end sent by the network device. It can design a suitable transceiver matching filter based on the first parameter, which is beneficial to improving the demodulation performance of the communication system.

[0142] In some optional embodiments of the present invention, the first information also includes at least one upsampling factor. In this embodiment, the terminal sends first indication information, first capability information and at least one upsampling factor to the network device; or, the first capability information includes at least one upsampling factor, that is, the terminal sends first indication information and first capability information to the network device, and the first capability information includes at least one upsampling factor.

[0143] In this embodiment, the at least one upsampling factor is a selectable upsampling factor determined by the terminal. Optionally, the at least one upsampling factor can be determined by the terminal based on the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points; or, the at least one upsampling factor can be determined by the terminal based on a second preset rule and the first capability information. For example, the second preset rule can be a second preset relationship table, and the second preset relationship table includes at least one upsampling factor corresponding to each of multiple first capability information.

[0144] In some embodiments, each of the at least one upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information. That is, each upsampling factor is greater than or equal to the updated rank parameter, and the updated rank parameter is obtained after the terminal updates the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna.

[0145] In some optional embodiments of the present invention, the second information further includes a first upsampling factor, and the first upsampling factor is determined by the network device according to the first information or selected by the network device from the at least one upsampling factor.

[0146] In some optional embodiments of the present invention, the method may further include: the terminal determining the at least one upsampling factor based on the first capability information.

[0147] In some optional embodiments of the present invention, the terminal determines the at least one upsampling factor based on the first capability information, which may include: the terminal determines the at least one upsampling factor based on the first capability information, the subcarrier spacing and a second parameter representing the number of system Fourier transform points.

[0148] In some embodiments, the terminal determines the at least one upsampling factor based on the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points, which may include: determining a first condition based on the first capability information, the subcarrier spacing and the second parameter, and determining at least one upsampling factor that satisfies the first condition.

[0149] As an optional implementation, the first capability information may be time information related to hardware switching of the terminal antenna, such as the time for the analog shifter of the antenna to respond to the shift signal and complete the shift. The first condition may be, for example:

[0150]

[0151] Among them, T 切换 represents the first capability information, that is, the time information related to the hardware switching of the terminal antenna, SCS represents the subcarrier spacing, FFT_size represents the second parameter, that is, the number of system Fourier transform points, US represents any upsampling factor in at least one upsampling factor, and k is an integer. In this embodiment, the first condition, that is, the inverse of the system sampling frequency after updating according to the upsampling factor (that is, the system sampling interval) should be greater than or equal to the first capability information (that is, the time information related to the hardware switching of the terminal antenna), and the product of the upsampling factor US and the system Fourier transform point number FFT_size should be a power of 2. Exemplarily, T 切换 When the frequency bandwidth is 10ns, the SCS is 30000Hz, and the FFT_size is 512 points, the FFT_size×US should not exceed 3333, that is, 1 / (30kHz×10ns). At the same time, the value of FFT_size×US should be a power of 2, thereby determining that at least one upsampling factor includes 2 and 4.

[0152] In some optional embodiments of the present invention, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0153] In some embodiments, when the first capability information includes the first terminal type, the first capability information also includes the at least one upsampling factor. In this embodiment, the first capability information characterizing the hardware switching capability of the terminal antenna is reported to the network device by the terminal type, and the at least one upsampling factor can be reported to the network device along with the terminal capability.

[0154] In some optional embodiments of the present invention, the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

[0155] In some embodiments, the first capability information may include time information when the antenna state of the terminal switches from a first state to a second state, and may include at least one of the following: time information when the antenna amplitude of the terminal switches from a first amplitude to a second amplitude, time information when the antenna phase of the terminal switches from a first phase to a second phase, time information when the antenna impedance of the terminal switches from a first impedance to a second impedance, and time information when the antenna deflection angle of the terminal switches from a first angle to a second angle.

[0156] In some optional embodiments of the present invention, the spectrum characteristics include at least bandwidth and / or adjacent-band leakage.

[0157] In some optional embodiments of the present invention, the first parameter includes at least one of the filter's cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filter effect, and frequency domain coefficient corresponding to the filter effect. Exemplarily, the first parameter may include the filter's cutoff frequency, filter length, filter roll-off factor, filter type, and system sampling frequency, etc., and the terminal may uniquely determine the filter after receiving the first parameter; or, the first parameter may include the system sampling frequency, filter length, filter roll-off factor, and filter coefficient, etc., wherein the filter coefficient may be, for example, a time domain coefficient or a frequency domain coefficient.

[0158] In some optional embodiments of the present invention, the terminal sending the first information to the network device may include: the terminal sending a first RRC signaling to the network device, the first RRC signaling including the first information; or, the terminal sending a UCI to the network device, the UCI including the first information; or, the terminal sending a first system message to the network device, the first system message including the first capability information and / or the at least one upsampling factor.

[0159] In some optional embodiments of the present invention, the terminal receives the second information sent by the network device, which may include: the terminal receives a second system message sent by the network device, the second system message includes the first parameter; or, the terminal receives a second RRC signaling sent by the network device, the second RRC signaling includes the first parameter and / or the first upsampling factor; or, the terminal receives a DCI sent by the network device, the DCI includes the first parameter and / or the first upsampling factor.

[0160] The communication scheme of the embodiment of the present invention is described below in conjunction with a specific application scenario. The following examples all take the communication method of the above embodiment as an example of applying it to a virtual MIMO system.

[0161] Example 1

[0162] In this example, the terminal reports the updated rank parameter of the downlink channel matrix (ie, the first indication information) and the hardware switching capability parameter T to the network device. 切换 (ie, the first capability information), wherein the hardware switching capability parameter T 切换 It is the absolute time accuracy parameter.

[0163] For example, Figure 5 FIG. 1 is a hardware structure example diagram of a virtual MIMO system in the related art, such as Figure 5 As shown, each antenna in the receiving end of the virtual MIMO system is connected to an analog shifter to realize the function of two virtual RF chains through phase switching of the analog shifter. In the related art, the accuracy range of the fastest switching time of hardware switching devices such as the terminal's RF switching switch or analog shifter is approximately within the range of 10ns to 100ns. This example takes the analog shifter of the terminal responding to the shift signal and completing the shifting time as 10ns, that is, the T reported by the terminal to the network device is 10ns. 切换 is 10ns.

[0164] After receiving the updated rank parameter of the downlink channel matrix and the hardware switching capability parameter reported by the terminal, the network device calculates the upsampling factor (ie, the first upsampling factor), and the calculation method can be as follows:

[0165] Taking the system bandwidth as 10MHz and the subcarrier spacing SCS as 30kHz as an example, the hardware switching capability parameter T reported by the terminal is 切换 When it is 10ns, according to the formula:

[0166]

[0167] It can be determined that FFT_size×US should not exceed 1 / (30kHz×10ns)≈3333, where FFT_size represents the number of system Fourier transform points and US represents the upsampling factor. At the same time, according to the constraint that FFT_size×US should be a power of 2, that is:

[0168]

[0169] It can be determined that FFT_size×US should be 2048, and when the system bandwidth is 10 MHz and the subcarrier spacing SCS is 30 kHz, FFT_size is 512 points, so the maximum upsampling multiple US=4 is required for the filter.

[0170] Furthermore, if US=2, the sampling rate of the entire virtual MIMO system is 30KHz×1024=30.72M, and the sampling interval is about 32ns, which meets the hardware requirements of the terminal; if US=4, the sampling rate of the entire virtual MIMO system is 30KHz×2048=61.44M, and the sampling interval is about 16ns, which meets the hardware requirements of the terminal. In this example, US=4 is taken.

[0171] After obtaining the upsampling factor, the network device can design a non-ideal filter based on the upsampling factor and send the designed filter parameters to the terminal through RRC signaling. The filter parameters mainly include the filter cutoff frequency Fc, filter length Lf, roll-off factor α, filter type Response Type and new sampling frequency Fs'. A filter can be uniquely determined by the above filter parameters. The terminal determines the receiving end matching filter according to the received RRC signaling. Fig. 6A FIG. 1 is a filter parameter diagram of Example 1 in which the communication method according to an embodiment of the present invention is applied to a virtual MIMO system. Figure 6B FIG. 1 is a schematic diagram of filter time domain tap coefficients in Example 1 of applying the communication method according to an embodiment of the present invention to a virtual MIMO system. Fig. 6A and Figure 6B As shown, the terminal can configure the receiving end matching filter according to the filter parameters.

[0172] Example 2

[0173] In this example, the terminal reports the updated rank parameter of the downlink channel matrix (ie, the first indication information) and the hardware switching capability parameter T to the network device. 切换 (ie, the first capability information), wherein the hardware switching capability T 切换 is a relative time precision parameter. The difference between this example and Example 1 is that the selectable upsampling factor US (ie, at least one upsampling factor) can be adjusted with the parameter T 切换 Report.

[0174] Table 1 is an exemplary relationship table between terminal types and optional upsampling factors provided by an embodiment of the present invention. As shown in Table 1, the terminals can be classified according to the dimensionless processing of the time for the analog shifter of different terminals to respond to the shifting signal and complete the shifting. The time for the analog shifter corresponding to different terminal types to respond to the shifting signal and complete the shifting is different. The terminal can determine the corresponding terminal type (i.e., the first terminal type) according to Table 1, and determine the optional upsampling factor corresponding to the terminal type. For example, the time for the analog shifter of the terminal to respond to the shifting signal and complete the shifting is 10ns, which is 0.25 after dimensionless processing. According to Table 1, the terminal type can be determined to be Category 2, and the corresponding optional upsampling factors are 2 and 4. The terminal can report the optional upsampling factor along with the terminal type to the network device through RRC signaling.

[0175] That is, the terminal reports the updated rank parameter (e.g., 2) and terminal type (UE Category 2) of the downlink channel matrix to the network device, and also reports the optional upsampling factor (2, 4) together with the terminal type. The network device selects a suitable upsampling factor based on the optional upsampling factors 2, 4 corresponding to the reported terminal type (UE Category 2) and the updated rank parameter (e.g., 2) of the downlink channel matrix, for example, US=2.

[0176] At this time, the updated sampling rate Fs' of the entire virtual MIMO system is 30KHz×1024=30.72M. The network device designs a non-ideal filter according to the updated sampling rate Fs', and sends the filter parameters to the terminal through RRC signaling. The terminal obtains the receiving end matched filter according to the received RRC signaling. Fig. 7A Schematic diagram of filter parameters of Example 2 in which the communication method according to an embodiment of the present invention is applied to a virtual MIMO system. Figure 7B FIG. 1 is a frequency domain schematic diagram of a filter in Example 2 of applying the communication method according to an embodiment of the present invention to a virtual MIMO system. Fig. 7A and Figure 7B As shown, the terminal can configure the receiving end matching filter according to the filter parameters.

[0177] Table 1

[0178]

[0179] Example 3

[0180] In this example, when the rank parameter of the downlink channel matrix is ​​updated, the terminal reports the updated rank parameter of the downlink channel matrix (ie, the first indication information) and the hardware switching capability parameter T to the network device. 切换(i.e., the first capability information). The difference between this example and Example 1 is that, in this embodiment, the network device may pre-store a relationship table between an upsampling factor and a filter coefficient, Table 2 is a predefined filter coefficient table when the upsampling factor is 4 when the subcarrier spacing is 30kHz and the system bandwidth is 10MHz provided in an embodiment of the present invention, and Table 3 is a predefined filter coefficient table when the upsampling factor is 2 when the subcarrier spacing is 30kHz and the system bandwidth is 10MHz provided in an embodiment of the present invention, and after determining the upsampling factor, the network device may determine the filter parameter (i.e., the first parameter) according to the pre-stored relationship table, and send the corresponding filter parameter to the terminal.

[0181] Specifically, at time T1, the terminal reports the updated downlink channel matrix rank parameter (RI') and the hardware switching capability parameter T 切换 , for example, RI'=2, T 切换 =10ns; the network device obtains the optional upsampling factor US as 2 or 4 according to the calculation method in Example 1, and selects the upsampling factor US=2. At this time, the network device can select a suitable filter coefficient from Table 3 to notify the terminal, such as h US＝2,1 At time T2, the terminal reports the updated downlink channel matrix rank parameter (RI') and hardware switching capability parameter T 切换 , for example, RI'=4, T 切换 =10ns; the network device determines that the optional upsampling factor US is 2 or 4, but at this time, according to the selection principle of the upsampling factor (i.e., the second condition mentioned above), the upsampling factor should be greater than or equal to the rank parameter of the downlink channel matrix, i.e., US≥RI'. The network device updates the upsampling factor US to 4, and selects a suitable filter coefficient from Table 2 to notify the terminal through DCI, such as h US＝4,1 (x).

[0182] Table 2

[0183]

[0184]

[0185] Table 3

[0186]

[0187] In the above example, when the channel information becomes rich, the network device can determine the appropriate upsampling factor based on the updated rank parameter of the downlink channel matrix and the hardware switching capability parameter of the terminal antenna, which is conducive to designing a better-performing transmit and receive matching filter for the virtual MIMO system, as well as designing a suitable allocation scheme of the interpolated sampling points to each virtual antenna, thereby improving the system demodulation performance.

[0188] An embodiment of the present invention also provides a communication device. Figure 8 The structure diagram of the communication device according to the embodiment of the present invention is shown in FIG. Figure 1 ,like Figure 8 As shown, the communication device 400 includes a first communication unit 401 and a first processing unit 402; wherein,

[0189] The first communication unit 401 is used to receive first information sent by the terminal, where the first information includes at least first indication information and first capability information; the first indication information is obtained by the terminal updating the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna, and the first capability information is used to characterize the hardware switching capability;

[0190] The first processing unit 402 is configured to determine a first parameter based on the first information, where the first parameter is related to a spectrum feature of a receiving end;

[0191] The first communication unit 401 is further configured to send second information to the terminal, where the second information at least includes the first parameter.

[0192] In an optional embodiment of the present invention, the first processing unit 402 is used to determine the first upsampling factor based on the first indication information and the first capability information, and determine the first parameter according to the first upsampling factor.

[0193] In an optional embodiment of the present invention, the first processing unit 402 is used to determine the first upsampling factor based on the first indication information, the first capability information, the subcarrier spacing and the second parameter representing the number of system Fourier transform points, wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

[0194] In an optional embodiment of the present invention, the first information also includes at least one upsampling factor; the first processing unit 402 is used to select a first upsampling factor from the at least one upsampling factor according to the first indication information, and determine the first parameter according to the first upsampling factor; wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

[0195] In an optional embodiment of the present invention, the first capability information includes at least one upsampling factor; the first processing unit 402 is used to select a first upsampling factor from the at least one upsampling factor according to the first indication information, and determine the first parameter according to the first upsampling factor; wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

[0196] In an optional embodiment of the present invention, the second information further includes the first up-sampling factor.

[0197] In an optional embodiment of the present invention, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or, the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0198] In an optional embodiment of the present invention, the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

[0199] In an optional embodiment of the present invention, the spectrum characteristics at least include bandwidth and / or adjacent-band leakage.

[0200] In an optional embodiment of the present invention, the first parameter includes at least one of the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filtering effect, and frequency domain coefficient corresponding to the filtering effect.

[0201] In an optional embodiment of the present invention, the first communication unit 401 is used to receive a first RRC signaling sent by the terminal, the first RRC signaling including the first information; or, the first communication unit 401 is used to receive a UCI sent by the terminal, the UCI including the first information; or, the first communication unit 401 is used to receive a first system message sent by the terminal, the first system message including the first capability information and / or the at least one upsampling factor.

[0202] In an optional embodiment of the present invention, the first communication unit 401 is used to send a second system message to the terminal, the second system message includes the first parameter; or, the first communication unit 401 is used to send a second RRC signaling to the terminal, the second RRC signaling includes the first parameter and / or the first upsampling factor; or, the first communication unit 401 is used to send downlink control information DCI to the terminal, the DCI includes the first parameter and / or the first upsampling factor.

[0203] In an embodiment of the present invention, the first processing unit 402 in the communication device 400 can be implemented by a central processing unit (CPU), a digital signal processor (DSP), a microcontroller unit (MCU) or a programmable gate array (FPGA) in a network device in actual applications; the first communication unit 401 in the communication device 400 can be implemented by a communication module (including: a basic communication kit, an operating system, a communication module, a standardized interface and protocol, etc.) and a transceiver antenna in actual applications.

[0204] An embodiment of the present invention also provides a communication device. Fig. 9 The structure diagram of the communication device according to the embodiment of the present invention is shown in FIG. Figure 2 ,like Fig. 9 As shown, the communication device 500 includes a second processing unit 501 and a second communication unit 502; wherein,

[0205] The second processing unit 501 is used to update the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna to obtain the first indication information;

[0206] The second communication unit 502 is used to send first information to the network device, where the first information at least includes the first indication information and first capability information; the first capability information is used to characterize the hardware switching capability; the first information is used by the network device to determine a first parameter; the first parameter is related to the spectrum characteristics of the receiving end;

[0207] The second communication unit 502 is further configured to receive second information sent by the network device, where the second information at least includes the first parameter.

[0208] In an optional embodiment of the present invention, the first information further includes at least one upsampling factor.

[0209] In an optional embodiment of the present invention, the first capability information includes at least one upsampling factor.

[0210] In an optional embodiment of the present invention, the second information further includes a first upsampling factor, and the first upsampling factor is determined by the network device according to the first information or selected by the network device from the at least one upsampling factor.

[0211] In an optional embodiment of the present invention, the second processing unit 501 is configured to determine the at least one upsampling factor based on the first capability information.

[0212] In an optional embodiment of the present invention, the second processing unit 501 is used to determine the at least one upsampling factor according to the first capability information, the subcarrier spacing and a second parameter representing the number of system Fourier transform points.

[0213] In an optional embodiment of the present invention, the first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or, the first capability information includes a first terminal type, and different terminal types correspond to different time information.

[0214] In an optional embodiment of the present invention, the antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

[0215] In an optional embodiment of the present invention, the spectrum characteristics at least include bandwidth and / or adjacent-band leakage.

[0216] In an optional embodiment of the present invention, the first parameter includes at least one of the filter cutoff frequency, filter length, filter roll-off factor, filter type, system sampling frequency, time domain coefficient corresponding to the filtering effect, and frequency domain coefficient corresponding to the filtering effect.

[0217] In an optional embodiment of the present invention, the second communication unit 502 is used to send a first RRC signaling to the network device, wherein the first RRC signaling includes the first information; or, the second communication unit 502 is used to send a UCI to the network device, wherein the UCI includes the first information; or, the second communication unit 502 is used to send a first system message to the network device, wherein the first system message includes the first capability information and / or the at least one upsampling factor.

[0218] In an optional embodiment of the present invention, the second communication unit 502 is used to receive a second system message sent by the network device, the second system message including the first parameter; or, the second communication unit 502 is used to receive a second RRC signaling sent by the network device, the second RRC signaling including the first parameter and / or the first upsampling factor; or, the second communication unit 502 is used to receive a DCI sent by the network device, the DCI including the first parameter and / or the first upsampling factor.

[0219] In an embodiment of the present invention, the second processing unit 501 in the communication device 500 can be implemented by the CPU, DSP, MCU or FPGA in the terminal in actual applications; the second communication unit 502 in the communication device 500 can be implemented by a communication module (including: basic communication kit, operating system, communication module, standardized interface and protocol, etc.) and a transceiver antenna in actual applications.

[0220] It should be noted that: when the communication device provided in the above embodiment performs communication, only the division of the above program modules is used as an example. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the communication device and the communication method embodiment provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0221] Fig.10 The figure is a schematic diagram of the hardware structure of the communication device according to the embodiment of the present invention. Fig.10 The communication device 600 shown may be a network device or terminal in the aforementioned embodiment, and the communication device 600 includes: at least one processor 601, a memory 602, and at least one network interface 603. The various components in the communication device 600 are coupled together via a bus system 604. It is understood that the bus system 604 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the bus system 604 is not shown in FIG. Fig.10 Various buses are labeled as bus system 604 .

[0222] It can be understood that the memory 602 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can 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), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can 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), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).The memory 602 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memories.

[0223] The memory 602 in the embodiment of the present invention is used to store various types of data to support the operation of the communication device 600. Examples of such data include: any computer program used to operate on the communication device 600, such as a program for implementing the method of the embodiment of the present invention.

[0224] The method disclosed in the above embodiment of the present invention can be applied to the processor 601, or implemented by the processor 601. The processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processor 601 or the instruction in the form of software. The above processor 601 may be a general processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 601 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present invention. The general processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present invention, it can be directly embodied as a hardware decoding processor to execute, or it 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, which is located in the memory 602. The processor 601 reads the information in the memory 602 and completes the steps of the above method in combination with its hardware.

[0225] In an exemplary embodiment, the communication device 600 may be implemented by at least one application specific integrated circuit (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic component to execute the aforementioned method.

[0226] In an exemplary embodiment, the embodiment of the present invention further provides a computer-readable storage medium, such as a memory 602 including a computer program, and the computer program can be executed by a processor 601 of a communication device 600 to complete the steps of the aforementioned method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, FlashMemory, magnetic surface memory, optical disk, or CD-ROM; or it can be various devices including one or any combination of the above memories, such as a computer, a tablet device, etc.

[0227] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0228] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0229] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0230] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0231] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0232] In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0233] A person skilled in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), disks or optical disks, etc. Various media that can store program codes.

[0234] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, magnetic disks or optical disks.

[0235] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: The method comprises: The network device receives first information sent by the terminal, where the first information includes at least first indication information and first capability information; the first indication information is obtained by the terminal updating a rank parameter of a downlink channel matrix according to a hardware switching capability of an antenna, and the first capability information is used to characterize the hardware switching capability; The network device determines a first parameter based on the first information, where the first parameter is related to a spectrum characteristic of a receiving end; and sends second information to the terminal, where the second information at least includes the first parameter.

2. The method according to claim 1, characterized in that The network device determines a first parameter based on the first information, including: The network device determines a first upsampling factor based on the first indication information and the first capability information, and determines the first parameter according to the first upsampling factor.

3. The method according to claim 2, characterized in that The network device determines a first upsampling factor based on the first indication information and the first capability information, including: The network device determines the first upsampling factor based on the first indication information, the first capability information, the subcarrier spacing and a second parameter representing the number of system Fourier transform points, wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

4. The method according to claim 1, characterized in that: The first information further includes at least one upsampling factor; and the network device determines a first parameter based on the first information, including: The network device selects a first upsampling factor from the at least one upsampling factor according to the first indication information, and determines the first parameter according to the first upsampling factor; wherein the first upsampling factor is greater than or equal to the rank parameter value indicated by the first indication information.

5. The method according to claim 2 or 4, characterized in that: The second information also includes the first upsampling factor.

6. The method according to any one of claims 1 to 4, characterized in that: The first capability information includes time information when the antenna state of the terminal switches from a first state to a second state; and / or the first capability information includes a first terminal type, and different terminal types correspond to different time information.

7. The method according to claim 6, characterized in that The antenna state includes at least one of antenna amplitude, antenna phase, antenna impedance and antenna deflection angle.

8. The method according to any one of claims 1 to 4, characterized in that: The spectrum characteristics include at least bandwidth and / or adjacent band leakage.

9. The method according to any one of claims 1 to 4, characterized in that: The first parameter includes at least one of a filter cutoff frequency, a filter length, a filter roll-off factor, a filter type, a system sampling frequency, a time domain coefficient corresponding to a filtering effect, and a frequency domain coefficient corresponding to a filtering effect.

10. The method according to claim 4, characterized in that The network device receives first information sent by a terminal, including: The network device receives a first radio resource configuration RRC signaling sent by the terminal, where the first RRC signaling includes the first information; or, The network device receives uplink control information UCI sent by the terminal, where the UCI includes the first information; or, The network device receives a first system message sent by the terminal, where the first system message includes the first capability information and / or the at least one upsampling factor.

11. The method according to claim 2 or 4, characterized in that: The sending the second information to the terminal includes: The network device sends a second system message to the terminal, where the second system message includes the first parameter; or, The network device sends a second RRC signaling to the terminal, where the second RRC signaling includes the first parameter and / or the first upsampling factor; or, The network device sends downlink control information DCI to the terminal, where the DCI includes the first parameter and / or the first upsampling factor.

12. A communication method, characterized in that: The method comprises: The terminal updates the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna, obtains the first indication information, and sends the first information to the network device, where the first information at least includes the first indication information and the first capability information; the first capability information is used to characterize the hardware switching capability; the first information is used by the network device to determine the first parameter; the first parameter is related to the spectrum characteristics of the receiving end; The terminal receives second information sent by the network device, where the second information at least includes the first parameter.

13. The method according to claim 12, characterized in that The first information also includes at least one upsampling factor.

14. The method according to claim 13, characterized in that The method further comprises: The terminal determines the at least one upsampling factor based on the first capability information.

15. The method according to claim 14, characterized in that The terminal determines, based on the first capability information, the at least one upsampling factor, including: The terminal determines the at least one upsampling factor according to the first capability information, the subcarrier spacing and a second parameter representing the number of system Fourier transform points.

16. A communication device, characterized in that: The device comprises a first communication unit and a first processing unit; wherein, The first communication unit is used to receive first information sent by the terminal, where the first information includes at least first indication information and first capability information; the first indication information is obtained by the terminal updating a rank parameter of a downlink channel matrix according to a hardware switching capability of the antenna, and the first capability information is used to characterize the hardware switching capability; The first processing unit is configured to determine a first parameter based on the first information, where the first parameter is related to a spectrum feature of a receiving end; The first communication unit is further used to send second information to the terminal, where the second information at least includes the first parameter.

17. A communication device, characterized in that: The device comprises a second processing unit and a second communication unit; wherein, The second processing unit is used to update the rank parameter of the downlink channel matrix according to the hardware switching capability of the antenna to obtain the first indication information; The second communication unit is used to send first information to the network device, the first information at least including the first indication information and first capability information; the first capability information is used to characterize the hardware switching capability; the first information is used by the network device to determine a first parameter; the first parameter is related to the spectrum characteristics of the receiving end; The second communication unit is further used to receive second information sent by the network device, where the second information at least includes the first parameter.

18. A communication device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method described in any one of claims 1 to 11 are implemented; or, when the processor executes the program, the steps of the method described in any one of claims 12 to 15 are implemented.

19. A computer-readable storage medium having computer instructions stored thereon, characterized in that: When the instruction is executed by the processor, the steps of the method described in any one of claims 1 to 11 are implemented; or, when the instruction is executed by the processor, the steps of the method described in any one of claims 12 to 15 are implemented.

Images