Information transmission method and device, related equipment and storage medium

Abstract

The invention discloses an information transmission method and device, a terminal, network equipment and a storage medium. The method comprises: a terminal receiving first information and second information sent by a network device, the first information being used for indicating time domain resource distribution conditions of at least two groups of demodulation reference signals (DM-RSs), and the at least two groups of DM-RSs being used for inter-carrier interference (ICI) estimation and / or equivalent channel estimation; the second information is used for indicating third information associated with each group of DM-RSs in the at least two groups of DM-RSs, and the third information represents one antenna characteristic state of the terminal and / or one antenna characteristic state of the network equipment.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and in particular, to an information transmission method, apparatus, related device, and storage medium. Background Art

[0002] A multiple-input multiple-output (MIMO) system can transmit multiple data streams simultaneously and on the same frequency, bringing huge spectral efficiency gains. It is an important enabling technology for future sixth-generation mobile communication technology (6G). Additionally, the MIMO system can extend signal processing to three dimensions: time domain, frequency domain, and spatial domain, significantly improving the capacity and stability of wireless systems without increasing additional power and bandwidth. A MIMO system with a hybrid analog and digital structure can balance system performance and hardware overhead and has practical value.

[0003] However, the MIMO system may introduce inter-carrier interference (ICI). Regarding how to accurately suppress ICI while taking into account signal overhead, there is no effective solution in the related art. Summary of the Invention

[0004] To solve the related technical problems, embodiments of this application provide an information transmission method, apparatus, related device, and storage medium.

[0005] The technical solution of the embodiments of this application is implemented as follows:

[0006] Embodiments of this application provide an information transmission method applied to a terminal, including:

[0007] Receiving first information and second information sent by a network device, where the first information is used to indicate the time-domain resource distribution of at least two sets of demodulation reference signals (DM-RS) for ICI estimation and / or equivalent channel estimation; the second information is used to indicate third information associated with each set of DM-RS in the at least two sets of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

[0008] In the above solution, the receiving the first information sent by the network device includes:

[0009] Receiving a first radio resource control (RRC) signaling sent by the network device, where the first RRC signaling includes the first information.

[0010] In the above solution, receiving the second information sent by the receiving network device includes one of the following:

[0011] Receiving the second RRC signaling sent by the network device, where the second RRC signaling contains the second information;

[0012] Receiving the first downlink control information (DCI, Downlink Control Information) sent by the network device, where the first DCI contains the second information.

[0013] In the above solution, the at least two groups of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; when the third information represents a certain antenna characteristic state of the terminal, or when the third information represents a certain antenna characteristic state of the terminal and a certain antenna characteristic state of the network device, the method further includes:

[0014] Using the first information and the second information, by switching at least two antenna characteristic states of the terminal within a first time unit, receiving the at least two groups of DM-RS sent by the network device to perform downlink ICI estimation and / or downlink equivalent channel estimation.

[0015] In the above solution, the at least two groups of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; when the third information represents a certain antenna characteristic state of the terminal, or when the third information represents a certain antenna characteristic state of the terminal and a certain antenna characteristic state of the network device, the method further includes:

[0016] Using the first information and the second information, by switching at least two antenna characteristic states of the terminal within a second time unit, sending the at least two groups of DM-RS to the network device to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0017] In the above solution, the number of antenna characteristic states of the terminal is associated with the virtual radio frequency channel multiple of the terminal, and the number of antenna characteristic states of the network device is associated with the virtual radio frequency channel multiple of the network device.

[0018] An embodiment of the present application further provides an information transmission method applied to a network device, including:

[0019] Send a first piece of information and a second piece of information to a terminal, where the first piece of information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate the third piece of information associated with each group of the at least two groups of DM-RS, and the third piece of information characterizes a state of an antenna characteristic of the terminal and / or a state of an antenna characteristic of the network device.

[0020] In the above solution, sending the first piece of information to the terminal includes:

[0021] Send a first RRC signaling to the terminal, and the first RRC signaling contains the first piece of information.

[0022] In the above solution, sending the second piece of information to the terminal includes one of the following:

[0023] Send a second RRC signaling to the terminal, and the second RRC signaling contains the second piece of information;

[0024] Send a first DCI to the terminal, and the first DCI contains the second piece of information.

[0025] In the above solution, the at least two groups of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; in the case where the third piece of information characterizes a state of an antenna characteristic of the network device, or, in the case where the third piece of information characterizes a state of an antenna characteristic of the terminal and a state of an antenna characteristic of the network device, the method further includes:

[0026] Use the first piece of information and the second piece of information to send the at least two groups of DM-RS to the terminal by switching at least two states of the antenna characteristics of the network device within a third time unit for downlink ICI estimation and / or downlink equivalent channel estimation.

[0027] In the above solution, the at least two groups of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; in the case where the third piece of information characterizes a state of an antenna characteristic of the network device, or, in the case where the third piece of information characterizes a state of an antenna characteristic of the terminal and a state of an antenna characteristic of the network device, the method further includes:

[0028] Use the first piece of information and the second piece of information to receive the at least two groups of DM-RS sent by the terminal by switching at least two states of the antenna characteristics of the network device within a fourth time unit for uplink ICI estimation and / or uplink equivalent channel estimation.

[0029] In the above solution, the number of antenna characteristic states of the terminal is associated with the virtual radio frequency channel multiple of the terminal, and the number of antenna characteristic states of the network device is associated with the virtual radio frequency channel multiple of the network device.

[0030] An information transmission device according to an embodiment of the present application further includes:

[0031] A first receiving unit, configured to receive first information and second information sent by a network device, where the first information is used to indicate the time domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate third information associated with each group of DM-RS in the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

[0032] An information transmission device according to an embodiment of the present application further includes:

[0033] A second sending unit, configured to send first information and second information to a terminal, where the first information is used to indicate the time domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate third information associated with each group of DM-RS in the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

[0034] A terminal according to an embodiment of the present application further includes: a first communication interface and a first processor; wherein,

[0035] The first communication interface is configured to receive first information and second information sent by a network device, where the first information is used to indicate the time domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate third information associated with each group of DM-RS in the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

[0036] A network device according to an embodiment of the present application further includes: a second communication interface and a second processor; wherein,

[0037] The second communication interface is used to send a first piece of information and a second piece of information to a terminal. The first piece of information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate the third piece of information associated with each group of the at least two groups of DM-RS, and the third piece of information characterizes a state of an antenna characteristic of the terminal and / or a state of an antenna characteristic of the network device.

[0038] An embodiment of this application further provides a terminal, including: a first processor and a first memory for storing a computer program that can run on the processor,

[0039] wherein, when the first processor is used to run the computer program, it executes the steps of any of the above methods on the terminal side.

[0040] An embodiment of this application further provides a network device, including: a second processor and a second memory for storing a computer program that can run on the processor,

[0041] wherein, when the second processor is used to run the computer program, it executes the steps of any of the above methods on the network device side.

[0042] An embodiment of this application further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of any of the above methods on the terminal side, or implements the steps of any of the above methods on the network device side.

[0043] The information transmission method, apparatus, related equipment, and storage medium provided by the embodiments of this application. The network device sends first information and second information to the terminal. The terminal receives the first information and the second information sent by the network device. The first information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation. The second information is used to indicate the third information associated with each group of DM-RS in the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device. In the solution provided by the embodiments of this application, the network device configures at least two groups of DM-RS for the terminal to perform ICI estimation and / or equivalent channel estimation, and each group of DM-RS is associated with an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device. In this way, for the ICI introduced due to the change of the antenna characteristic state of the terminal and / or the network device in the MIMO system, the terminal and / or the network device can accurately perform ICI estimation and / or equivalent channel estimation by using the DM-RS adapted to the antenna characteristic state, so as to accurately suppress ICI and not cause excessive pilot overhead, that is, it can accurately suppress ICI on the premise of taking into account the pilot overhead, thereby improving the transmission performance of the MIMO system and reducing the impact on the spectral efficiency of the MIMO system. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the time-domain and frequency-domain distributions of DM-RS in the related art;

[0045] Figure 2 It is a schematic flowchart of the information transmission method according to the embodiments of this application;

[0046] Figure 3 It is a schematic diagram of the time-domain distribution of a kind of DM-RS in the application example of this application;

[0047] Figure 4 It is a schematic diagram of using the single-beam DM-RS for ICI estimation in the application example of this application;

[0048] Figure 5 It is a schematic diagram of using the single-beam DM-RS for equivalent channel estimation in the application example of this application;

[0049] Figure 6 It is a schematic diagram of another time-domain distribution of DM-RS in the application example of this application;

[0050] Figure 7 It is a schematic diagram of the third time-domain distribution of DM-RS in the application example of this application;

[0051] Figure 8 It is a schematic diagram of the structure of an information transmission apparatus according to the embodiments of this application;

[0052] Figure 9 This is a schematic structural diagram of another information transmission device according to an embodiment of the present application;

[0053] Figure 10 This is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0054] Figure 11 This is a schematic structural diagram of a network device according to an embodiment of the present application;

[0055] Figure 12 This is a schematic structural diagram of an information transmission system according to an embodiment of the present application. Detailed implementation manners

[0056] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0057] In wireless communication, orthogonal frequency division multiplexing (OFDM) is extremely sensitive to frequency offset. Once the carrier orthogonality is destroyed, the system performance will drop sharply. Generally, the reasons for causing OFDM ICI can include carrier frequency offset, sampling frequency offset, Doppler, phase noise, ultra-long multipath, etc. ICI will cause the signal-to-noise ratio (i.e., signal-to-interference plus noise ratio (SINR)) loss of the OFDM system and the degradation of the error code performance. In severe cases, it will bring a floor effect to the system performance. Currently, the means to suppress ICI can include frequency domain equalization, time domain Nyquist windowing, and ICI self-cancellation algorithms, etc.; among them, frequency domain equalization has accurate ICI estimation performance, but the overhead of training sequences and / or pilots is relatively large.

[0058] In future MIMO systems, due to the possible change of the antenna characteristic state of the terminal and / or network device, certain ICI may be introduced in the frequency domain, affecting the SINR in the equalization detection process (such as equalization detection based on least squares (LS), linear minimum mean square error (LMMSE), or power delay profile (PDP)-minimum mean square error (MMSE), etc.), thus possibly causing the degradation of the transmission performance of the MIMO system.

[0059] To overcome the above-mentioned impact on the SINR in the equalization detection process, overall suppression of noise and ICI can be considered to ensure the transmission performance of multiple virtual MIMO channels. That is, an interference rejection combining (IRC) receiver (such as an MMSE-IRC receiver, etc.) can be considered. In other words, the terminal can estimate the interference power corresponding to ICI on the pilot, and then replace the white noise in the MMSE-IRC receiver with the interference plus noise covariance matrix corresponding to the ICI estimated on the pilot, so as to achieve ICI suppression.

[0060] In the related art, pilot signals (i.e., DM-RS) are used by the terminal for channel estimation and related demodulation of the data channel. One transmission of DM-RS can include the transmission of multiple orthogonal reference signals, and these reference signals can be distinguished in the time domain, frequency domain, or code domain. Currently, the DM-RS in the New Radio (NR) supports up to 12 orthogonal antenna ports at most to meet the MIMO application requirements, and a slot can be configured with up to 4 reference signal instances at most to support high-speed mobile scenarios. Specifically, as Figure 1 shown, the DM-RS in NR mainly includes two types: Front-loaded DM-RS and Additional DM-RS; the Front-loaded DM-RS is configured at the front of the transmission, which is beneficial for the system to obtain lower latency and can be processed without waiting for all data to be received and cached; the Additional DM-RS is an optional item used to adapt to the rapid change of the channel in scenarios such as high-speed movement. A maximum of three Additional DM-RS can be configured in a slot for more accurate channel estimation. According to the different positions of the first DM-RS symbol, the time-domain structure of the Front-loaded DM-RS can include two structures: Type A and Type B; among them, for Type A, the first DM-RS symbol is located in the second or third OFDM symbol within the slot, that is, the DM-RS is configured at the edge of the slot; for Type B, the first DM-RS symbol is located in the first OFDM symbol allocated for data transmission, that is, the DM-RS is configured at the start position of the data transmission.

[0061] From the above description, it can be seen that in the related art, the DM-RS defined by NR only supports the estimation of the equivalent channel and does not support the estimation of ICI when the antenna characteristic state of the terminal and / or network device changes. In order to enable the DM-RS to support the estimation of ICI when the antenna characteristic state of the terminal and / or network device changes, the embodiments of this application need to solve at least the following two aspects of problems:

[0062] Problem 1: How to accurately estimate the ICI in the equivalent channel on the pilot so that the terminal can accurately suppress the ICI by means of an IRC receiver (such as an MMSE-IRC receiver, etc.);

[0063] Problem 2: How to balance reducing the pilot overhead and reducing the impact on the system spectral efficiency.

[0064] Based on this, in various embodiments of the present application, a new DM-RS design for suppressing ICI is proposed. The network device configures at least two sets of DM-RS for the terminal to perform ICI estimation and / or equivalent channel estimation. Each set of DM-RS is associated with a certain antenna characteristic state of the terminal and / or a certain antenna characteristic state of the network device. In this way, for the ICI introduced due to the change of the antenna characteristic state of the terminal and / or the network device in the MIMO system, the terminal and / or the network device can accurately perform ICI estimation and / or equivalent channel estimation by using the DM-RS adapted to the antenna characteristic state, so as to accurately suppress the ICI (such as accurately suppressing the ICI by means of an IRC receiver (such as an MMSE-IRC receiver, etc.)), and will not cause the pilot overhead to be too large, that is, can accurately suppress the ICI on the premise of considering the pilot overhead, thereby improving the transmission performance of the MIMO system and reducing the impact on the spectral efficiency of the MIMO system, and thus at least solving the above Problem 1 and Problem 2.

[0065] Specifically, an embodiment of the present application provides an information transmission method, which is applied to a terminal and includes:

[0066] Receiving first information and second information sent by a network device, where the first information is used to indicate the time-domain resource distribution of at least two sets of DM-RS, and the at least two sets of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate the third information associated with each set of the at least two sets of DM-RS, and the third information characterizes a certain antenna characteristic state of the terminal and / or a certain antenna characteristic state of the network device.

[0067] Wherein, in practical applications, the terminal may also be referred to as a user equipment (UE), and may also be referred to as a user. In addition, the network device may specifically include a base station, etc., and the specific type of the network device in the embodiment of the present application is not limited.

[0068] In practical applications, the antenna characteristic state can be understood as a state information associated with the physical characteristics of the antenna and changing with the change of the physical characteristics of the antenna. Exemplarily, the antenna characteristic state may include, but is not limited to, information related to analog beams (such as identification information of analog beams (such as index values, etc.), and phase information of analog phase shifters, etc.), array characteristic information of the antenna (such as impedance and / or load information, etc., and electromagnetic characteristic information of intelligent reflecting surfaces, etc.), antenna angular position information (such as rotation and / or movement information of the array), etc.

[0069] In practical applications, the network device may configure multiple groups (i.e., at least two groups) of DM-RSs for ICI estimation and / or equivalent channel estimation according to the number of variable antenna characteristics (i.e., the number of antenna characteristic states of the terminal and / or the number of antenna characteristic states of the network device). Each group of DM-RSs for ICI estimation and / or equivalent channel estimation corresponds to an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device; in other words, the network device may determine the first information and the second information according to the number of antenna characteristic states of the terminal and / or the number of antenna characteristic states of the network device.

[0070] In practical applications, the specific manifestation form of the time-domain resource distribution of the at least two groups of DM-RSs (i.e., the specific manifestation form of the first information) can be set according to requirements, and the embodiments of the present application do not limit this. Exemplarily, the first information may include the symbols occupied by each DM-RS in each group of the at least two groups of DM-RSs within a time unit. A time unit may include at least one time slot, frame, or sub-frame, etc.; for example, a time unit may include one time slot or two time slots, etc.; for another example, a time unit may include two frames or three frames, etc.; for another example, a time unit may include three sub-frames or four sub-frames, etc. In the case where a time unit includes one time slot, the first information may include the symbols occupied by each DM-RS in each group of the at least two groups of DM-RSs within one time slot.

[0071] In practical applications, "the second information is used to indicate the third information associated with each group of DM-RS in the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device" can also be understood as that the second information is used to indicate the association relationship (which can also be called a corresponding relationship, a mapping relationship, a mapping sorting index, etc.) between the pilot for ICI estimation and / or equivalent channel estimation (i.e., the DM-RS for ICI estimation and / or equivalent channel estimation) and different antenna characteristic states of the terminal and / or different antenna characteristic states of the network device. The specific manifestation form of this association relationship (i.e., the specific manifestation form of the second information) can be set according to requirements, and the embodiments of the present application do not limit this. Exemplarily, the second information may include the identifier (such as an index value, etc.) of each DM-RS in each group of the at least two groups of DM-RS, and the identifier (such as an index value, etc.) of an analog beam of the terminal corresponding to each DM-RS and / or the identifier (such as an index value, etc.) of an analog beam of the network device.

[0072] In practical applications, the network device may synchronously configure the first information and the second information through a specific signaling; Exemplarily, the network device may send DCI, Media Access Control (MAC) Control Element (CE), or RRC and other signaling carrying (i.e., including) the first information and the second information to the terminal. Alternatively, the network device may separately configure the first information and the second information; Exemplarily, the network device may first configure the first information for the terminal by using RRC signaling (which can be denoted as the first RRC signaling in the subsequent description), and then configure the second information for the terminal by using DCI (which can be denoted as the first DCI in the subsequent description) or another RRC signaling (which can be denoted as the second RRC signaling in the subsequent description); where, assuming that only the antenna characteristic state of the terminal is variable and the antenna characteristic state of the network device is immutable, and assuming that the variable antenna characteristic state of the terminal includes two variable analog beams, the network device may configure two symbols available for DM-RS occupancy for the terminal through one RRC signaling. 0 and l 1 , in the case where a time unit includes one time slot, other symbols within the time slot may be processed with variable beams, l 0 and l 1 these two symbols are respectively processed with one analog beam; The network device may establish l 0 and l 1The correspondence between these two symbols and the analog beam can establish a sorting index, that is, determine the second information. There can be 2(2!) results for the sorting index. The network device can use DCI to notify the terminal of the sorting index, that is, use DCI to indicate the second information to the terminal.

[0073] Based on this, in one embodiment, receiving the first information sent by the network device may include:

[0074] Receiving the first RRC signaling sent by the network device, where the first RRC signaling contains the first information.

[0075] In one embodiment, receiving the second information sent by the network device may include:

[0076] Receiving the second RRC signaling sent by the network device, where the second RRC signaling contains the second information.

[0077] In one embodiment, receiving the second information sent by the network device may include:

[0078] Receiving the first DCI sent by the network device, where the first DCI contains the second information.

[0079] In actual application, when the at least two sets of DM-RS are only used for ICI estimation, when the network device sends the first information to the terminal, that is, when the network device configures the time-domain resource distribution of at least two sets of DM-RS for ICI estimation for the terminal, the network device can also configure the time-domain resource distribution of DM-RS for equivalent channel estimation for the terminal; when the network device sends the second information to the terminal, that is, when the network device configures the correspondence between the pilot for ICI estimation (i.e., the DM-RS for ICI estimation) and different antenna characteristic states of the terminal and / or different antenna characteristic states of the network device, the network device can also configure the correspondence between the pilot for equivalent channel estimation (i.e., the DM-RS for equivalent channel estimation) and different antenna characteristic states of the terminal and / or different antenna characteristic states of the network device. The terminal can complete the reception of the symbols where the pilots are located in different antenna characteristic states within one time unit (such as the first time unit, which specifically may include one time slot) according to the time-domain resource distribution of all the pilots (i.e., the DM-RS for ICI estimation and the DM-RS for equivalent channel estimation) configured by the network device, and the correspondence between all the pilots and different antenna characteristic states of the terminal and / or different antenna characteristic states of the network device. Specifically, for the DM-RS for equivalent channel estimation, within the symbol period where the DM-RS is located, the terminal can receive the symbol where the DM-RS is located by adopting the same antenna characteristic switching method as that of the data part (i.e., the Physical Downlink Shared Channel (PDSCH)). For the DM-RS for ICI estimation, within the symbol period where the DM-RS is located, the terminal can receive the symbol where the DM-RS is located by adopting a corresponding antenna characteristic state of the terminal (such as an analog beam, etc.).

[0080] In actual application, when the at least two sets of DM-RS are only used for ICI estimation, it can be understood that the network device can configure the time-domain resource distribution of all pilots (i.e., the DM-RS for ICI estimation and the DM-RS for equivalent channel estimation) to the terminal through the same signaling (such as DCI, MAC CE, or RRC, etc.); in other words, the first RRC signaling may further include fourth information, and the fourth information is used to indicate the time-domain resource distribution of the DM-RS for equivalent channel estimation. The specific form of the fourth information can be set according to requirements, and this embodiment of the present application does not limit this. Exemplarily, the fourth information may include the symbols occupied by the DM-RS for equivalent channel estimation within a time unit (such as a time slot). In addition, the sorting index established by the network device for the correspondence between all pilots (i.e., the DM-RS for ICI estimation and the DM-RS for equivalent channel estimation) and different antenna characteristic states of the terminal and / or different antenna characteristic states of the network device can also be configured to the terminal through the same signaling (such as DCI, MAC CE, or RRC, etc.); in other words, the first DCI or the second RRC signaling may further include fifth information, and the fifth information is used to indicate the association relationship (which may also be referred to as a correspondence relationship, a mapping relationship, or a mapping sorting index, etc.) between the DM-RS for equivalent channel estimation and an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device. The specific form of the fifth information can be set according to requirements, and this embodiment of the present application does not limit this. Exemplarily, the fifth information may include the identifier (such as an index value, etc.) of the DM-RS for equivalent channel estimation and the identifier (such as an index value, etc.) of an analog beam of the corresponding terminal and / or the identifier (such as an index value, etc.) of an analog beam of the network device.

[0081] In actual application, the number of variable antenna characteristics (i.e., the number of antenna characteristic states) of the terminal and / or the network device may depend on the virtual radio frequency channel multiple of the MIMO system. In addition, it can be understood that there may be the following three situations (i.e., scenarios) for the change of the antenna characteristics of the MIMO system:

[0082] Situation 1: Only the antenna characteristic state of the terminal changes. At this time, the terminal can configure the same number of antenna characteristic states according to the virtual radio frequency channel multiple and report the number of antenna characteristic states to the network device, and the third information represents an antenna characteristic state of the terminal;

[0083] Case 2: Only the antenna characteristic state of the network device changes. At this time, the network device may configure the same number of antenna characteristic states according to the virtual radio frequency channel multiple, and notify the terminal of the number of antenna characteristic states. The third information represents an antenna characteristic state of the network device.

[0084] Case 3: The antenna characteristic states of both the terminal and the network device change. At this time, the terminal may configure the same number of antenna characteristic states according to the virtual radio frequency channel multiple, and report the number of antenna characteristic states to the network device; the network device may configure the same number of antenna characteristic states according to the virtual radio frequency channel multiple, and notify the terminal of the number of antenna characteristic states; the third information represents an antenna characteristic state of the terminal and an antenna characteristic state of the network device.

[0085] Based on this, in an embodiment, the number of antenna characteristic states of the terminal may be associated with the virtual radio frequency channel multiple of the terminal, and the number of antenna characteristic states of the network device may be associated with the virtual radio frequency channel multiple of the network device.

[0086] In practical applications, for downlink data transmission in an MIMO system, the network device may configure the same number of groups of DM-RS according to the number of variable antenna characteristics (i.e., the number of antenna characteristic states of the terminal and / or the number of antenna characteristic states of the network device) for downlink ICI estimation and / or downlink equivalent channel estimation; in other words, the at least two groups of DM-RS may be used for downlink ICI estimation and / or downlink equivalent channel estimation.

[0087] Based on this, in an embodiment, the at least two groups of DM-RS may be used for downlink ICI estimation and / or downlink equivalent channel estimation; for the above Case 1 and Case 3, that is, when the third information represents an antenna characteristic state of the terminal, or when the third information represents an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the method may further include:

[0088] Using the first information and the second information, by switching at least two antenna characteristic states of the terminal within the first time unit, receiving the at least two groups of DM-RS sent by the network device for downlink ICI estimation and / or downlink equivalent channel estimation.

[0089] In actual application, receiving the at least two groups of DM-RS sent by the network device to perform downlink ICI estimation and / or downlink equivalent channel estimation can be understood as the terminal performing downlink ICI estimation and / or downlink equivalent channel estimation by receiving the at least two groups of DM-RS. The specific manner / process for the terminal to perform downlink ICI estimation and / or downlink equivalent channel estimation can be set according to requirements (such as the requirements of the MIMO system for suppressing ICI, etc.), and the embodiments of the present application do not limit this.

[0090] In actual application, for uplink data transmission in a MIMO system, the network device can configure the terminal to send the same number of groups of DM-RS to perform uplink ICI estimation and / or uplink equivalent channel estimation according to the number of variable antenna characteristics (i.e., the number of antenna characteristic states of the terminal and / or the number of antenna characteristic states of the network device); in other words, the at least two groups of DM-RS can be used to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0091] Based on this, in an embodiment, the at least two groups of DM-RS can be used to perform uplink ICI estimation and / or uplink equivalent channel estimation; for the above cases 1 and 3, that is, in the case where the third information represents an antenna characteristic state of the terminal, or, in the case where the third information represents an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the method may further include:

[0092] Using the first information and the second information, by switching at least two antenna characteristic states of the terminal within a second time unit, sending the at least two groups of DM-RS to the network device to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0093] In actual application, the second time unit may specifically include one time slot. Sending the at least two groups of DM-RS to the network device to perform uplink ICI estimation and / or uplink equivalent channel estimation can be understood as the network device performing uplink ICI estimation and / or uplink equivalent channel estimation by receiving the at least two groups of DM-RS. The specific manner / process for the network device to perform uplink ICI estimation and / or uplink equivalent channel estimation can be set according to requirements (such as the requirements of the MIMO system for suppressing ICI, etc.), and the embodiments of the present application do not limit this.

[0094] Correspondingly, the embodiments of the present application further provide an information transmission method, applied to a network device (such as a base station, etc.), including:

[0095] Send a first piece of information and a second piece of information to a terminal, where the first piece of information is used to indicate the time-domain resource distribution of at least two sets of DM-RS, and the at least two sets of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate the third piece of information associated with each set of the at least two sets of DM-RS, and the third piece of information characterizes a state of an antenna characteristic of the terminal and / or a state of an antenna characteristic of the network device.

[0096] Wherein, in one embodiment, the sending the first piece of information to the terminal may include:

[0097] Send a first RRC signaling to the terminal, and the first RRC signaling contains the first piece of information.

[0098] In one embodiment, the sending the second piece of information to the terminal may include one of the following:

[0099] Send a second RRC signaling to the terminal, and the second RRC signaling contains the second piece of information;

[0100] Send a first DCI to the terminal, and the first DCI contains the second piece of information.

[0101] In one embodiment, the at least two sets of DM-RS may be used for downlink ICI estimation and / or downlink equivalent channel estimation; for the above cases 2 and 3, that is, in the case where the third piece of information characterizes a state of an antenna characteristic of the network device, or, in the case where the third piece of information characterizes a state of an antenna characteristic of the terminal and a state of an antenna characteristic of the network device, the method may further include:

[0102] Utilize the first piece of information and the second piece of information, and by switching at least two states of antenna characteristics of the network device within a third time unit, send the at least two sets of DM-RS to the terminal for downlink ICI estimation and / or downlink equivalent channel estimation.

[0103] Wherein, in practical applications, the third time unit may specifically include one time slot.

[0104] In one embodiment, the at least two sets of DM-RS may be used for uplink ICI estimation and / or uplink equivalent channel estimation; for the above cases 2 and 3, that is, in the case where the third piece of information characterizes a state of an antenna characteristic of the network device, or, in the case where the third piece of information characterizes a state of an antenna characteristic of the terminal and a state of an antenna characteristic of the network device, the method may further include:

[0105] By using the first information and the second information, by switching at least two antenna characteristic states of the network device within a fourth time unit, receiving the at least two groups of DM-RS sent by the terminal, so as to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0106] Wherein, in actual application, the fourth time unit may specifically include one time slot.

[0107] Correspondingly, an embodiment of the present application further provides an information transmission method, as Figure 2 shown, the method includes:

[0108] Step 201: The network device sends the first information and the second information to the terminal, where the first information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate the third information associated with each group of DM-RS in the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device;

[0109] Step 202: The terminal receives the first information and the second information sent by the network device.

[0110] In the information transmission method provided by the embodiments of the present application, a network device sends first information and second information to a terminal. The terminal receives the first information and the second information sent by the network device. The first information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation. The second information is used to indicate the third information associated with each group of DM-RS in the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device. In the solution provided by the embodiments of the present application, the network device configures at least two groups of DM-RS for the terminal to perform ICI estimation and / or equivalent channel estimation, and each group of DM-RS is associated with an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device. In this way, for the ICI introduced due to the change of the antenna characteristic state of the terminal and / or the network device in the MIMO system, the terminal and / or the network device can accurately perform ICI estimation and / or equivalent channel estimation by using the DM-RS adapted to the antenna characteristic state, so as to accurately suppress ICI (for example, by using an IRC receiver (such as an MMSE-IRC receiver, etc.) to accurately suppress ICI), and will not cause excessive pilot overhead, that is, it can accurately suppress ICI while taking into account the pilot overhead, thereby improving the transmission performance of the MIMO system and reducing the impact on the spectral efficiency of the MIMO system, and thus at least solving the above problems 1 and 2.

[0111] The present application will be further described in detail below with reference to application examples.

[0112] In this application example, taking the downlink data transmission of the MIMO system as an example, when the terminal adopts a digital-analog hybrid antenna structure, two different antenna characteristic states (which can be denoted as beam 1 and beam 2 respectively in the following description) can be realized by changing the analog beam, so that two different beams can be used for symbol reception within one symbol period on the data channel. Specifically, a general time-domain distribution configuration of a kind of DM-RS provided by this application example is as Figure 3 shown. This time-domain distribution configuration specifically includes the time-domain distribution configurations of DM-RS for equivalent channel estimation and DM-RS for ICI estimation. Among them, there is a switch between beam 1 and beam 2 on the symbol where the DM-RS for equivalent channel estimation is located, and the position of the corresponding symbol is represented by l 0 (which can be understood as relative to the starting position of the time slot). The change of the receiving beam within the same symbol period will introduce ICI. Therefore, at positions l 1 and l 2Two columns (i.e., two groups) of DM-RS for ICI estimation are configured on the symbols, corresponding to beam 1 and beam 2 of the terminal's analog beamforming respectively. For the other symbols occupied by the data part (i.e., PDSCH), the beam will still change within the symbol period during the receiving process. At symbol l 0 The DM-RS on it can complete the estimation of the equivalent channel of the data part. However, due to the change of the beam within the symbol period, there will be ICI in the equivalent channel.

[0113] In this application example, for Figure 3 the DM-RS time-domain distribution configuration shown, in order to estimate the ICI introduced due to the time-domain beam change, the DM-RS corresponding to beam 1 and beam 2 respectively can be used for ICI estimation. Figure 4 It is a schematic diagram for estimating the ICI of each data stream using the DM-RS of a single beam. Taking the example of changing the beam in the first and second half of the symbol, that is, taking beam 1 and beam 2 acting on the sampling points in the first half and the second half of the symbol period respectively. That is to say, assuming the sampling points of a symbol in the time domain, the first half of the sampling points are received by beam 1, and the second half of the sampling points are received by beam 2, as Figure 4 shown, the DM-RS of layer 1 (Layer1) is interleaved with the DM-RS of layer 2 (Layer2) at an interval of one frequency point in the frequency domain as Figure 3 shown. Since the terminal changes the beam during the receiving process, the energy of the DM-RS of Layer2 will spread to other positions in the frequency domain, and thus affect Layer1. In order to estimate the ICI caused by beam 1 acting on the first half of the symbol in the time domain, the first half of the sampling points are taken for the time-domain equivalent channel h1_bf1 of Layer1 and the time-domain equivalent channel h2_bf1 of Layer2 respectively, and 0 is filled in the second half. Then, they are respectively transformed to the frequency domain through the fast Fourier transform (FFT, Fast Fourier Transform). The terminal can calculate the ICI of Layer2 for Layer1 according to the frequency-domain results. Subtracting the ICI from the equivalent channel estimation result H1_effe of Layer1 can obtain the actual equivalent channel of the signal part of Layer1, so as to accurately suppress the ICI and improve the transmission performance of the MIMO system.

[0114] In this application example, for Figure 3 the DM-RS time-domain distribution configuration shown, the equivalent channel estimation can be performed using the DM-RS corresponding to beam 1 and beam 2 respectively. Figure 5Schematic diagram for estimating the equivalent channels of each data stream using the DM-RS of a single beam. Taking the example of changing the beam in the first and second half symbols, that is, taking beam 1 and beam 2 acting on the sampling points in the first half and the second half of the symbol period respectively. That is to say, assuming that for the sampling points of a symbol in the time domain, the first half of the sampling points are received by beam 1, and the second half of the sampling points are received by beam 2, as Figure 5 shown. For Layer 1, first, the terminal can obtain the equivalent channels H1_bf1 and H1_bf2 corresponding to beam 1 and beam 2 respectively through interpolation processing in the frequency domain according to the transmission results of the DM-RS on symbol l 1 and l 2 . Then, the terminal can respectively transform H1_bf1 and H1_bf2 to the time domain through the inverse fast Fourier transform (IFFT), obtaining h1_bf1 and h2_bf2. Finally, the terminal can splice the first half of h1_bf1 and the second half of h2_bf2 together to form a new symbol and then transform it to the frequency domain through FFT, thereby obtaining the equivalent channel H1_effe of Layer 1. Here, the specific estimation process of the equivalent channel H2_effe of Layer 2 can be understood by referring to the above estimation process of H1_effe, and this application example will not elaborate on it.

[0115] Among them, in actual application, the network device needs to configure the time domain position and length of the symbols occupied by the DM-RS for estimating the equivalent channel and ICI. Specifically, it can be considered to configure the start position (which can be expressed in English as dmrs-H eq -Position) field in the management information base (MIB, Management InformationBase) signaling to determine that the start position of the DM-RS for estimating the equivalent channel is l 0 , for estimating the equivalent channel corresponding to the change of antenna characteristics within the symbol. Correspondingly, it can be considered to add the start position (which can be expressed in English as dmrs-H ICI -Position) field of the DM-RS for estimating ICI in the MIB signaling to configure the start position of the DM-RS for estimating ICI. N f represents the number of antenna characteristics of the system, which is determined by the channel multiple virtualized by the system. Assuming that the interval between the first symbol and the last symbol occupied by the PDSCH in the time slot is l d , in order to avoid excessive pilot overhead of the DM-RS, N f needs to satisfy the following formula:

[0116]

[0117] Among them, N f represents the number of antenna characteristics of the system, and l d represents the interval between the first symbol and the last symbol occupied by the PDSCH in a time slot; η represents the pilot overhead coefficient, which needs to be less than or equal to 0.5; and represent the number of symbols occupied by the DM-RS for estimating the equivalent channel and estimating the ICI in each group (the value can be 1 or 2). Taking the terminal with 2 analog beams as an example, the network device can configure 1 column (i.e., one group) of DM-RS for equivalent channel estimation and 2 columns (i.e., two groups) of DM-RS for ICI estimation. Finally, the time domain positions of the 3 groups of DM-RS configured in total are {l 0 , l 1 , l 2}. And, since the DM-RS corresponds one-to-one with the antenna characteristic state of the terminal, the network device needs to establish a mapping relationship between the pilot sequence (i.e., the DM-RS index) and the antenna characteristics (i.e., the above-mentioned second information, or the above-mentioned second information and the above-mentioned fifth information) and notify the terminal, so that the terminal can receive using the corresponding antenna characteristics at the symbols where the DM-RS is located. Therefore, it is also possible to consider expanding the content of the DCI signaling (i.e., making the DCI contain the above-mentioned second information, or containing the above-mentioned second information and the above-mentioned fifth information) to notify the terminal of the mapping sorting index of the DM-RS and the antenna characteristics. The size of this mapping sorting index can be log 2 ((1 + N f )!) bits. Taking the terminal with 2 analog beams as an example and considering the DM-RS for equivalent channel estimation, if the network device configures a total of 3 groups of DM-RS, then the size of this mapping sorting index can be log 2 (3!) bits. In addition, and representing the number of symbols occupied by the DM-RS for estimating the equivalent channel and estimating the ICI in each group respectively can be configured separately in the high-layer signaling PDSCH configuration (which can be expressed in English as PDSCH-config). The length of the DM-RS for equivalent channel estimation can be represented by the field dmrs_H eq _len, and the value can be 1 or 2; and the lengths of the DM-RS for ICI estimation can be represented by the fields dmrs_ICI_len1, dmrs_ICI_len2,..., dmrs_ICI_lenNf, and the values can also be 1 or 2.

[0118] In practical applications, in the fifth-generation mobile communication technology (5G) NR system, a DM-RS structure that combines preposed DM-RS with add-on DM-RS with configurable time-domain density is adopted. The preposed DM-RS helps reduce the demodulation and decoding latency. Therefore, the position where the DM-RS first appears should be as close as possible to the start point of scheduling. In medium- and high-speed scenarios, to meet the estimation accuracy requirements for channel time-variation, more DM-RS symbols need to be inserted during the scheduling duration. Therefore, considering compatibility with the NR system, the DM-RS corresponding to different antenna characteristics can also be configured in a combined manner of preposing and adding.

[0119] Based on this, another time-domain distribution configuration of the preposed DM-RS provided in this application example is as Figure 6 shown. The preposed DM-RS configured on symbol 3 (sym3, symbol 3) switches between beam 1 and beam 2 in the time domain for estimating the equivalent channel. The DM-RS configured on symbol 4 (sym4, symbol 4) corresponds to beam 1 in the time domain, and the DM-RS configured on symbol 5 (sym5, symbol 5) corresponds to beam 2 in the time domain. The DM-RS on sym4 and sym5 does not perform beam switching. Among them, the time-domain position and length of the DM-RS can be configured through high-layer signaling. Referring to the 5G NR system, the starting position of the preposed DM-RS can be determined as position 2 (pos2, position 2) or position 3 (pos3, position 3) using the dmrs-TypeA-Position field of the mapping type A DM-RS in the MIB signaling to estimate the equivalent channel corresponding to the change in antenna characteristics within the symbol. Correspondingly, the starting position of the DM-RS used to estimate ICI can be indicated by the relative position with respect to pos2 or pos3 in the MIB signaling, where N represents the number of antenna characteristics of the system. Taking the example of a terminal having 2 analog beams, the DM-RS of a single beam corresponds to beam 1 and beam 2 respectively, and the corresponding time-domain starting positions are {pos2 + l f , pos2 + l 1} or {pos3 + l 2 , pos3 + l 1}. For the number of symbols occupied in the time domain, referring to the 5G NR system, using the max length in the DMRS-DownlinkConfig of the PDSCH-config in the high-layer signaling, the length of the DM-RS used for equivalent channel estimation can be configured as dmrs_H 2} or {pos3 + l eq_len, configure the length of the DM-RS for ICI estimation as {dmrs_ICI_len1, dmrs2_ICI_ken2,..., dmrs_ICI_lenNf}, where the value of each length can be 1 or 2 symbols respectively, and Nf also represents the number of antenna characteristics of the system.

[0120] In this application example, considering that under conditions such as medium and high-speed mobility, due to the obvious time-varying characteristics of the channel, the channel estimation accuracy may be affected. Therefore, referring to the design methods of the preamble DM-RS and the additional DM-RS in the 5G NR system, one or more (i.e., at least two) additional DM-RSs can be set for the DM-RS used for ICI estimation to ensure the performance of ICI estimation. Specifically, Figure 7 For the time-domain distribution configuration of the single-beam DM-RS based on the preamble and additional distributions, as Figure 7 shown, the network device configures the single-beam DM-RS for ICI estimation at the positions of symbol 4 (sym4, symbol 4) and symbol 12 (sym12, symbol 12) for beam 1 respectively, and configures the single-beam DM-RS for ICI estimation at the positions of symbol 5 (sym5, symbol 5) and symbol 13 (sym13, symbol 13) for beam 2 respectively, while the DM-RS for the dual-beam transformation is on symbol 3 (sym3, symbol 3) and symbol 11 (sym11, symbol 11) respectively, which is used for the estimation of the actual equivalent channel. Using the additional DM-RS can improve the channel estimation and ICI estimation accuracy in specific system scenarios (such as high-speed mobility scenarios).

[0121] In this application example, based on Figure 7 the time-domain distribution shown, the 5G NR system is extended and adjusted. The time-domain distribution of the preamble and additional distributed single-beam DM-RS in the PDSCH is shown in Table 1. In Table 1, taking the single-symbol DM-RS and 2 streams in the PDSCH as an example, the pilot distributions of the preamble / additional DM-RS under different data channel lengths are designed. Among them, the parameter l d For mapping type A (which can be expressed as TypeA in English) represents the distance from the first symbol of the time slot where the PDSCH is located to the last symbol occupied by the PDSCH, and for mapping type B (which can be expressed as TypeB in English) represents the distance between the first symbol and the last symbol occupied by the PDSCH. To avoid excessive pilot overhead, it is necessary to determine according to l dBased on different values, determine the number of symbols occupied by DM-RS in the time domain and the corresponding positions. Specifically, it can be configured through the DM-RS position (which can be expressed in English as DMRS-postion) field in the high-layer signaling, specifying one of the three values {pos0, pos1, pos2} of DMRS-postion to determine one distribution case of DM-RS. As shown in Table 1, the configuration with an asterisk mark (i.e., ) corresponds to the case where only preposed DM-RS exists, and the configuration without an asterisk mark (i.e., l) corresponds to the case of preposed DM-RS and one group of additional DM-RS. To be compatible with the frame structure of NR, generally, the maximum length of the time-domain distribution of DM-RS needs to satisfy the following formula:

[0122]

[0123] where, represents the maximum length of the time-domain distribution of DM-RS; l d For mapping type A (which can be expressed in English as TypeA), it represents the distance from the first symbol of the time slot where PDSCH is located to the last symbol occupied by PDSCH, and for mapping type B (which can be expressed in English as TypeB), it represents the distance between the first symbol and the last symbol occupied by PDSCH; η represents the pilot overhead coefficient, which needs to be less than or equal to 0.5; and represent the number of symbols occupied by each group of DM-RS for estimating the equivalent channel and estimating ICI (the value can be 1 or 2); represents the number of groups of additional DM-RS. Taking Table 1 as an example, for mapping type A needs to satisfy formula (3), and for mapping type B (such as in the mini slot scenario, etc.) needs to satisfy formula (4).

[0124]

[0125]

[0126] Table 1

[0127]

[0128]

[0129] The solution provided by this application example proposes a new DM-RS scheme for suppressing ICI in response to the ICI problem introduced by antenna characteristic changes in future MIMO systems. The scheme uses DM-RSs corresponding one-to-one to different antenna characteristic states to achieve ICI suppression, and flexibly configures the time-domain distribution of DM-RSs through relevant signaling, so as to adapt to different antenna characteristic change modes, which is beneficial to improving the transmission performance of future MIMO systems. Moreover, the pilot overhead can be controlled by configuring the pilot overhead coefficient η to avoid excessive pilot overhead.

[0130] To implement the method on the terminal side in the embodiments of this application, the embodiments of this application further provide an information transmission device, which is set on the terminal, as Figure 8 shown, the device includes:

[0131] A first receiving unit 801, configured to receive a first piece of information and a second piece of information sent by a network device, where the first piece of information is used to indicate the time-domain resource distribution of at least two groups of DM-RSs, and the at least two groups of DM-RSs are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate a third piece of information associated with each group of DM-RSs in the at least two groups of DM-RSs, and the third piece of information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

[0132] Wherein, in one embodiment, the first receiving unit 801 is specifically configured to receive a first RRC signaling sent by the network device, and the first RRC signaling includes the first piece of information.

[0133] In one embodiment, the first receiving unit 801 is specifically configured to perform one of the following:

[0134] Receive a second RRC signaling sent by the network device, where the second RRC signaling includes the second piece of information;

[0135] Receive a first DCI sent by the network device, where the first DCI includes the second piece of information.

[0136] In one embodiment, as Figure 8As shown, the device may further include a second receiving unit 802; the at least two sets of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; when the third information characterizes an antenna characteristic state of the terminal, or when the third information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the second receiving unit 802 is configured to use the first information and the second information to receive the at least two sets of DM-RS sent by the network device by switching at least two antenna characteristic states of the terminal within a first time unit, so as to perform downlink ICI estimation and / or downlink equivalent channel estimation.

[0137] In one embodiment, as Figure 8 As shown, the device may further include a first transmitting unit 803; the at least two sets of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; when the third information characterizes an antenna characteristic state of the terminal, or when the third information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the first transmitting unit 803 is configured to use the first information and the second information to send the at least two sets of DM-RS to the network device by switching at least two antenna characteristic states of the terminal within a second time unit, so as to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0138] In practical applications, the first receiving unit 801, the second receiving unit 802, and the first transmitting unit 803 may be implemented by a communication interface in the information transmission device.

[0139] To implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide an information transmission device, which is disposed on the network device, as Figure 9 As shown, the device includes:

[0140] A second transmitting unit 901, configured to send a first information and a second information to a terminal, where the first information is used to indicate the time domain resource distribution of at least two sets of DM-RS, and the at least two sets of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate third information associated with each set of DM-RS in the at least two sets of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

[0141] Wherein, in one embodiment, the second transmitting unit 901 is specifically configured to send a first RRC signaling to the terminal, and the first RRC signaling includes the first information.

[0142] In one embodiment, the second sending unit 901 is specifically configured to perform one of the following:

[0143] Send a second RRC signaling to the terminal, where the second RRC signaling includes the second information;

[0144] Send a first DCI to the terminal, where the first DCI includes the second information.

[0145] In one embodiment, as Figure 9 shown, the apparatus may further include a third sending unit 902; the at least two sets of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; when the third information characterizes an antenna characteristic state of the network device, or when the third information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the third sending unit 902 is configured to use the first information and the second information to send the at least two sets of DM-RS to the terminal by switching at least two antenna characteristic states of the network device within a third time unit, so as to perform downlink ICI estimation and / or downlink equivalent channel estimation.

[0146] In one embodiment, as Figure 9 shown, the apparatus may further include a third receiving unit 903; the at least two sets of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; when the third information characterizes an antenna characteristic state of the network device, or when the third information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the third receiving unit 903 is configured to use the first information and the second information to receive the at least two sets of DM-RS sent by the terminal by switching at least two antenna characteristic states of the network device within a fourth time unit, so as to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0147] In actual application, the second sending unit 901, the third sending unit 902, and the third receiving unit 903 may be implemented by a communication interface in an information transmission device.

[0148] It should be noted that: when the information transmission device provided in the above embodiment performs information transmission, only the above division of each program module is used for illustration. In actual application, the above processing may be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the information transmission device provided in the above embodiment and the information transmission method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0149] Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side in the embodiments of the present application, the embodiments of the present application further provide a terminal, as Figure 10 shown, the terminal 1000 includes:

[0150] A first communication interface 1001, capable of interacting with a network device and / or other terminals for information;

[0151] A first processor 1002, connected to the first communication interface 1001 to implement information interaction with a network device and / or other terminals, and when running a computer program, execute the method provided by one or more of the above terminal-side technical solutions;

[0152] A first memory 1003, on which the computer program is stored.

[0153] Specifically, the first communication interface 1001 is configured to receive a first piece of information and a second piece of information sent by a network device, where the first piece of information is used to indicate the time-domain resource distribution of at least two sets of DM-RS, and the at least two sets of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate third information associated with each set of DM-RS in the at least two sets of DM-RS, and the third information characterizes an antenna characteristic state of the terminal 1000 and / or an antenna characteristic state of the network device.

[0154] Wherein, in one embodiment, the first communication interface 1001 is further configured to receive a first RRC signaling sent by the network device, and the first RRC signaling includes the first piece of information.

[0155] In one embodiment, the first communication interface 1001 is further configured to perform one of the following:

[0156] Receive a second RRC signaling sent by the network device, and the second RRC signaling includes the second piece of information;

[0157] Receive a first DCI sent by the network device, and the first DCI includes the second piece of information.

[0158] In one embodiment, the at least two sets of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; when the third information characterizes a state of an antenna characteristic of the terminal 1000, or when the third information characterizes a state of an antenna characteristic of the terminal 1000 and a state of an antenna characteristic of the network device, the first communication interface 1001 is further configured to use the first information and the second information to receive the at least two sets of DM-RS sent by the network device by switching at least two states of the antenna characteristics of the terminal 1000 within a first time unit, so as to perform downlink ICI estimation and / or downlink equivalent channel estimation.

[0159] In one embodiment, the at least two sets of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; when the third information characterizes a state of an antenna characteristic of the terminal 1000, or when the third information characterizes a state of an antenna characteristic of the terminal 1000 and a state of an antenna characteristic of the network device, the first communication interface 1001 is further configured to use the first information and the second information to send the at least two sets of DM-RS to the network device by switching at least two states of the antenna characteristics of the terminal 1000 within a second time unit, so as to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0160] It should be noted that the specific processing procedure of the first communication interface 1001 can be understood with reference to the above method and will not be elaborated here.

[0161] Of course, in practical applications, each component in the terminal 1000 is coupled together through the bus system 1004. It can be understood that the bus system 1004 is used to realize the connection and communication between these components. The bus system 1004 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for the sake of clear description, in Figure 10 all kinds of buses are labeled as the bus system 1004.

[0162] The first memory 1003 in the embodiments of the present application is used to store various types of data to support the operation of the terminal 1000. Examples of these data include: any computer program for operating on the terminal 1000.

[0163] The method disclosed in the embodiments of the present application above can be applied to the first processor 1002 or implemented by the first processor 1002. The first processor 1002 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 integrated logic circuit of the hardware in the first processor 1002 or instructions in the form of software. The first processor 1002 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 1002 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the first memory 1003. The first processor 1002 reads the information in the first memory 1003 and combines its hardware to complete the steps of the foregoing method.

[0164] In an exemplary embodiment, the terminal 1000 can be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components for executing the foregoing method.

[0165] Based on the hardware implementation of the above program module and in order to implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a network device, as Figure 11 shown. The network device 1100 includes:

[0166] A second communication interface 1101 capable of information interaction with the terminal and / or other network devices;

[0167] A second processor 1102, connected to the second communication interface 1101 to enable information interaction with the terminal and / or other network devices, and when running a computer program, executes the method provided by one or more of the above technical solutions on the network device side;

[0168] A second memory 1103, on which the computer program is stored.

[0169] Specifically, the second communication interface 1101 is used to send a first piece of information and a second piece of information to the terminal. The first piece of information is used to indicate the time-domain resource distribution of at least two sets of DM-RS, and the at least two sets of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate the third piece of information associated with each set of DM-RS in the at least two sets of DM-RS, and the third piece of information characterizes a state of an antenna characteristic of the terminal and / or a state of an antenna characteristic of the network device 1100.

[0170] Wherein, in one embodiment, the second communication interface 1101 is further used to send a first RRC signaling to the terminal, and the first RRC signaling includes the first piece of information.

[0171] In one embodiment, the second communication interface 1101 is further used to perform one of the following:

[0172] Send a second RRC signaling to the terminal, and the second RRC signaling includes the second piece of information;

[0173] Send a first DCI to the terminal, and the first DCI includes the second piece of information.

[0174] In one embodiment, the at least two sets of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; when the third piece of information characterizes a state of an antenna characteristic of the network device 1100, or when the third piece of information characterizes a state of an antenna characteristic of the terminal and a state of an antenna characteristic of the network device 1100, the second communication interface 1101 is further used to use the first piece of information and the second piece of information to send the at least two sets of DM-RS to the terminal by switching at least two states of the antenna characteristics of the network device 1100 within a third time unit for downlink ICI estimation and / or downlink equivalent channel estimation.

[0175] In one embodiment, the at least two sets of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; when the third information characterizes an antenna characteristic state of the network device 1100, or when the third information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device 1100, the second communication interface 1101 is further configured to use the first information and the second information to receive the at least two sets of DM-RS sent by the terminal by switching at least two antenna characteristic states of the network device 1100 within a fourth time unit, so as to perform uplink ICI estimation and / or uplink equivalent channel estimation.

[0176] It should be noted that: the specific processing procedure of the second communication interface 1101 can be understood with reference to the above method, and will not be elaborated here.

[0177] Of course, in practical applications, each component in the network device 1100 is coupled together through the bus system 1104. It can be understood that the bus system 1104 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1104 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, in Figure 11 all kinds of buses are labeled as the bus system 1104.

[0178] The second memory 1103 in the embodiments of the present application is used to store various types of data to support the operation of the network device 1100. Examples of these data include: any computer program for operating on the network device 1100.

[0179] The method disclosed in the embodiments of the present application above can be applied to the second processor 1102 or implemented by the second processor 1102. The second processor 1102 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 integrated logic circuit in the hardware of the second processor 1102 or by instructions in the form of software. The second processor 1102 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 1102 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the second memory 1103. The second processor 1102 reads the information in the second memory 1103 and combines its hardware to complete the steps of the foregoing method.

[0180] In an exemplary embodiment, the network device 1100 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the foregoing method.

[0181] It can be understood that the memories (the first memory 1003 and the second memory 1103) in the embodiments of the present application can be volatile memories or non-volatile memories, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), a ferromagnetic random access memory (FRAM, ferromagnetic random access memory), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM, Compact Disc Read-Only Memory); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM, Static Random Access Memory), a synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), a dynamic random access memory (DRAM, Dynamic Random Access Memory), a synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), a double data rate synchronous dynamic random access memory (DDR SDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), an enhanced synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), a synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and a direct rambus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but not limited to, these and any other suitable types of memories.

[0182] To implement the method provided by the embodiments of the present application, the embodiments of the present application further provide an information transmission system, as Figure 12 shown, the system includes: a terminal 1201 and a network device 1202.

[0183] Here, it should be noted that: the specific processing procedures of the terminal 1201 and the network device 1202 have been described in detail above and will not be elaborated here.

[0184] In an exemplary embodiment, the embodiments of the present application further provide a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 1003 storing a computer program, and the above computer program can be executed by a first processor 1002 of the terminal 1000 to complete the steps of the foregoing method on the terminal side. Another example is a second memory 1103 storing a computer program, and the above computer program can be executed by a second processor 1102 of the network device 1100 to complete the steps of the foregoing method on the network device side. The computer-readable storage medium can be a FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0185] It should be noted that: "first", "second", etc. are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0186] In addition, the technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

[0187] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. An information transmission method, characterized in that, applied to a terminal, comprising: receiving first information and second information sent by a network device, the first information being used to indicate the time-domain resource distribution of at least two sets of demodulation reference signals (DM-RS), the at least two sets of DM-RS being used for inter-carrier interference (ICI) estimation and / or equivalent channel estimation; the second information being used to indicate third information associated with each set of the at least two sets of DM-RS, the third information characterizing an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

2. The method according to claim 1, characterized in that, the receiving the first information sent by the network device comprises: receiving a first radio resource control (RRC) signaling sent by the network device, the first RRC signaling containing the first information.

3. The method according to claim 1, characterized in that, the receiving the second information sent by the network device includes one of the following: receiving a second RRC signaling sent by the network device, the second RRC signaling containing the second information; receiving a first downlink control information (DCI) sent by the network device, the first DCI containing the second information.

4. The method according to any one of claims 1 to 3, characterized in that, the at least two sets of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; in the case where the third information characterizes an antenna characteristic state of the terminal, or, in the case where the third information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the method further comprises: using the first information and the second information, by switching at least two antenna characteristic states of the terminal within a first time unit, receiving the at least two sets of DM-RS sent by the network device, so as to perform downlink ICI estimation and / or downlink equivalent channel estimation.

5. The method according to any one of claims 1 to 3, characterized in that, the at least two sets of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; in the case where the third information characterizes an antenna characteristic state of the terminal, or, in the case where the third information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the method further comprises: using the first information and the second information, by switching at least two antenna characteristic states of the terminal within a second time unit, sending the at least two sets of DM-RS to the network device, so as to perform uplink ICI estimation and / or uplink equivalent channel estimation.

6. The method according to any one of claims 1 to 3, characterized in that, the number of antenna characteristic states of the terminal is associated with the virtual radio frequency channel multiple of the terminal, and the number of antenna characteristic states of the network device is associated with the virtual radio frequency channel multiple of the network device.

7. An information transmission method, characterized in that, applied to a network device, comprising: Send a first piece of information and a second piece of information to a terminal, where the first piece of information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate the third piece of information associated with each group of the at least two groups of DM-RS, and the third piece of information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

8. The method according to claim 7, wherein, the at least two groups of DM-RS are used for downlink ICI estimation and / or downlink equivalent channel estimation; in the case where the third piece of information characterizes an antenna characteristic state of the network device, or, in the case where the third piece of information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the method further includes: Using the first piece of information and the second piece of information, by switching at least two antenna characteristic states of the network device within a third time unit, send the at least two groups of DM-RS to the terminal for downlink ICI estimation and / or downlink equivalent channel estimation.

9. The method according to claim 7, wherein, the at least two groups of DM-RS are used for uplink ICI estimation and / or uplink equivalent channel estimation; in the case where the third piece of information characterizes an antenna characteristic state of the network device, or, in the case where the third piece of information characterizes an antenna characteristic state of the terminal and an antenna characteristic state of the network device, the method further includes: Using the first piece of information and the second piece of information, by switching at least two antenna characteristic states of the network device within a fourth time unit, receive the at least two groups of DM-RS sent by the terminal for uplink ICI estimation and / or uplink equivalent channel estimation.

10. An information transmission device, wherein, comprises: A first receiving unit, configured to receive a first piece of information and a second piece of information sent by a network device, where the first piece of information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate the third piece of information associated with each group of the at least two groups of DM-RS, and the third piece of information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

11. An information transmission device, wherein, comprises: A second sending unit, configured to send a first piece of information and a second piece of information to a terminal, where the first piece of information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second piece of information is used to indicate the third piece of information associated with each group of the at least two groups of DM-RS, and the third piece of information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

12. A terminal, wherein, comprises: A first communication interface and a first processor; wherein, The first communication interface is configured to receive first information and second information sent by a network device, where the first information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate third information associated with each group of the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

13. A network device, Characterized in that, It includes: A second communication interface and a second processor; wherein, The second communication interface is configured to send first information and second information to a terminal, where the first information is used to indicate the time-domain resource distribution of at least two groups of DM-RS, and the at least two groups of DM-RS are used for ICI estimation and / or equivalent channel estimation; the second information is used to indicate third information associated with each group of the at least two groups of DM-RS, and the third information characterizes an antenna characteristic state of the terminal and / or an antenna characteristic state of the network device.

14. A terminal, Characterized in that, It includes: A first processor and a first memory for storing a computer program that can run on the processor, wherein, when the first processor is used to run the computer program, it executes the steps of the method according to any one of claims 1 to 6.

15. A network device, Characterized in that, It includes: A second processor and a second memory for storing a computer program that can run on the processor, wherein, when the second processor is used to run the computer program, it executes the steps of the method according to any one of claims 7 to 9.

16. A storage medium, on which a computer program is stored, Characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6, or implements the steps of the method according to any one of claims 7 to 9.

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