A communication method, apparatus, and computer readable storage medium

Abstract

The embodiment of the application discloses a communication method, device and computer readable storage medium, comprising: receiving first information; determining a first sequence according to the first information; receiving a first signal, the first sequence and the first signal being used for estimating interference of a network device on a first device. The embodiment of the application can eliminate interference.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of communication, and particularly relate to a communication method, device and computer readable storage medium. BACKGROUND

[0002] When the first network device is in the coverage of the second network device, the first network device can not only receive the information from the first terminal device, but also receive the information from the second network device, so that the first network device cannot determine the information sent by the first terminal device. Therefore, it is necessary to eliminate the interference of one network device to another network device in its coverage, but there is no signal for measuring the interference at present, so that the interference cannot be eliminated. SUMMARY

[0003] Embodiments of the present application disclose a communication method, device and computer readable storage medium, which are used for eliminating interference.

[0004] The first aspect discloses a communication method, which can be applied to a first device or a module (for example, a chip) in the first device. The first device is in the coverage of a network device. The first device can be the network device or a terminal device. The communication method can include: receiving first information; determining a first sequence according to the first information; receiving a first signal, the first sequence and the first signal being used for estimating interference of the network device to the first device.

[0005] In embodiments of the present application, the first device can receive the first information and the first signal from the network device, then determine the first sequence according to the first information, and estimate the spatial statistical information of the interference of the network device to the first device according to the first sequence and the first signal, so that when the first device receives information from a terminal device and the network device sends information to a terminal device, the first device can eliminate the interference of the network device to the first device according to the spatial statistical information of the interference, thereby eliminating the interference. The first information and the first signal can solve the technical problem that there is no signal for measuring the spatial statistical information of the interference in the prior art.

[0006] As a possible implementation, the first signal is a signal sent by the network device to a second device, the second device is any terminal device in the coverage of the network device, and the first signal is used for channel estimation of the second device.

[0007] As a possible implementation, the first information can include information of a scrambling code, and the first device determining the first sequence according to the first information includes: determining the first sequence according to the information of the scrambling code.

[0008] In the embodiments of the present application, the first device can use the known information of the first signal, i.e., the first sequence, to estimate the spatial statistical information of the interference of the network device to the first device. Compared with using other unknown signals in the first signal that are not the first sequence to measure the spatial statistical information of the interference, the result measured by using the known first sequence is more accurate, thereby the accuracy of the interference estimation can be improved.

[0009] As a possible implementation, the first information can further include an identifier of an antenna port for transmitting the first signal, and the first device receiving the first signal includes: determining a code division multiplexing (CDM) group to which the first signal belongs and an orthogonal cover code (OCC) sequence used by the first signal according to the identifier of the antenna port; and receiving the first signal according to the CDM group and the OCC sequence.

[0010] In the embodiments of the present application, after the first device receives the identifier of the antenna port of the first signal from the network device, the first device can determine the transmission position of the first signal according to the identifier, so that the first device receives the first signal at the transmission position, which can avoid the first device receiving the first signal by blind detection, thereby the power consumption of the first device can be reduced.

[0011] As a possible implementation, the first information can be configured by high layer signaling or indicated by downlink control information (DCI), the DCI is scrambled by a first radio network tempory identity (RNTI), and the first RNTI is configured by high layer signaling.

[0012] In the embodiments of the present application, since the RNTIs configured by the network device for different devices are different, the first device can find the required DCI from several DCIs sent by the network device according to the first RNTI, to realize accurate point-to-point information transmission, thereby the security of the DCI transmission can be improved.

[0013] As a possible implementation, the communication method can further include: estimating the interference of the network device to the first device according to the first sequence and the first signal.

[0014] In the embodiments of the present application, the first device can accurately estimate the spatial statistical characteristics of the interference of the network device to the first device according to the first sequence and the first signal, so that the useful signal can be accurately determined from the mixed signal of the interference and the useful signal, thereby ensuring the accuracy of information reception.

[0015] As a possible implementation, the first device estimates the interference of the network device to the first device according to the first sequence and the first signal, which includes: performing channel estimation according to the first sequence and the first signal; determining the interference corresponding to the subband to which the first signal belongs according to the estimation result; and determining the spatial statistical information of the interference of the network device to the first device according to the interference of the subband to which the first signal belongs.

[0016] As a possible implementation, the first sequence and the first signal are used to estimate the interference of the network device to the first device, which includes: the first sequence and the first signal are used to perform channel estimation, the interference corresponding to the subband to which the first signal belongs is determined according to the estimation result, and the spatial statistical information of the interference of the network device to the first device is determined according to the interference.

[0017] The second aspect discloses a communication method, which can be applied to a network device or a module (for example, a chip) in the network device. The communication method is described below by taking the network device as an example. The communication method can include: sending first information to a first device, the first information being used to determine a first sequence, the first device being within the coverage range of the network device, and the first device being a network device or a terminal device; and sending a first signal to a second device, the first signal being used for channel estimation by the second device, and the first signal also being used for the first device to estimate the interference of the network device to the first device according to the first sequence, the second device being any terminal device within the coverage range of the network device.

[0018] In the embodiments of the present application, the network device can send the first information and the first signal to the first device, so that the first device can determine the first sequence according to the first information, and can estimate the spatial statistical information of the interference of the network device to the first device according to the first sequence and the first signal. When the first device receives information from one terminal device, and the network device sends information to another terminal device, the first device can eliminate the interference of the network device to the first device according to the spatial statistical information of the interference, thereby eliminating the interference. The first information and the first signal described above can solve the technical problem that there is no signal for measuring the spatial statistical information of the interference in the prior art.

[0019] As a possible implementation, the first information can include the information of a scrambling code, and the information of the scrambling code is used to determine the first sequence.

[0020] In this embodiment of the application, the first information sent by the network device to the first device includes scrambling information, so that the first information can determine the first sequence based on the scrambling information. Then, the spatial statistics of the interference of the network device to the first device can be estimated by using the information of the known first signal, i.e. the first sequence. Compared with using other unknown signals in the first signal that are not in the first sequence to measure the spatial statistics of the interference, the result of measuring the known first sequence is more accurate, thereby improving the accuracy of the interference estimation.

[0021] As one possible implementation, the first information may also include an identifier of the antenna port that transmits the first signal, the identifier of which is used by the first device to receive the first signal.

[0022] In this embodiment of the application, the network device can send the identifier of the antenna port of the first signal to the first device, so that the first device can determine the transmission location of the first signal according to the identifier and receive the first signal at the transmission location. This can avoid the first device receiving the first signal through blind detection, thereby reducing the power consumption of the first device.

[0023] As one possible implementation, the network device sending the first information to the first device includes: configuring the first information to the first device via higher-layer signaling; or sending the first information to the first device via DCI, wherein the DCI uses a first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0024] In this embodiment of the application, since the network devices are configured with different RNTIs for different devices, the first device can find the DCI it needs from the several DCIs sent by the network devices through the first RNTI, so as to achieve accurate point-to-point information transmission and thereby improve the security of DCI transmission.

[0025] The third aspect discloses a communication method that can be applied to a first device or a module (e.g., a chip) within the first device. The following description uses the first device as an example. The first device is within the coverage area of ​​a network device. The first device can be a network device or a terminal device. The communication method may include: receiving a precoding matrix indication (PMI); and receiving a first signal, wherein the PMI and the first signal are used to estimate interference from the network device to the first device.

[0026] In this embodiment, the first device can receive a PMI and a first signal from a network device. Then, it can estimate spatial statistics of interference from the network device to the first device based on the PMI and the first signal. This allows the first device to eliminate interference when it receives information from one terminal device while the network device is sending information to another terminal device, based on the aforementioned spatial statistics. Furthermore, the PMI and the first signal address the technical problem in the prior art of lacking signals for measuring spatial statistics of interference.

[0027] In one possible implementation, the first signal is a signal sent by the network device to the second device, which is any terminal device within the coverage area of ​​the network device, and the first signal is used by the second device to perform channel estimation.

[0028] As one possible implementation, PMI can be configured by higher-layer signaling or indicated by DCI, where DCI uses a first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0029] In this embodiment of the application, since the network devices are configured with different RNTIs for different devices, the first device can find the required DCI from the several DCIs sent by the network devices through the first RNTI, so as to achieve accurate point-to-point information transmission and thus improve the security of DCI transmission.

[0030] As one possible implementation, the communication method may further include: estimating the interference of the network device on the first device based on the PMI and the first signal.

[0031] In this embodiment of the application, the first device can accurately estimate the spatial statistical characteristics of the interference of the network device to the first device based on the PMI and the first signal, so as to accurately determine the useful signal from the mixed signal of interference and useful signal, thereby ensuring the accuracy of information reception.

[0032] As one possible implementation, the first device estimates the interference of the network device on the first device based on the PMI and the first signal, including: determining a first sequence based on scrambling code information; performing channel estimation based on the first sequence and the first signal to obtain the sub-band channel of the sub-band to which the first signal belongs; and determining the spatial statistics of the interference of the network device on the first device based on the PMI corresponding to the sub-band to which the first signal belongs and the sub-band channel of the sub-band to which the first signal belongs.

[0033] As one possible implementation, the communication method may further include: determining a first sequence based on scrambling code information, wherein the scrambling code information is configured via higher-layer signaling; using the PMI and a first signal to estimate interference from the network device to the first device includes: performing channel estimation using the first signal and the first sequence to obtain the sub-band channel of the sub-band to which the first signal belongs, and determining spatial statistical information of interference from the network device to the first device based on the sub-band channel of the sub-band to which the first signal belongs and the PMI corresponding to the sub-band to which the first signal belongs.

[0034] In one possible implementation, the aforementioned spatial statistics are the covariance matrix of the disturbance.

[0035] The fourth aspect discloses a communication method that can be applied to a network device or a module (e.g., a chip) within the network device. The following description uses a network device as an example. The communication method may include: sending a PMI to a first device, which is within the coverage area of ​​the network device; the first device can be either a network device or a terminal device; and sending a first signal to a second device, the first signal being used by the second device to perform channel estimation, and also used by the first device to estimate interference from the network device to the first device based on the PMI, wherein the second device is any terminal device within the coverage area of ​​the network device.

[0036] In this embodiment, the network device can send a PMI and a first signal to the first device, so that the first device can estimate the spatial statistics of the interference from the network device based on the PMI and the first signal. When the first device receives information from one terminal device while the network device sends information to another terminal device, the first device can eliminate the interference from the network device based on the aforementioned spatial statistics of interference, thereby eliminating the interference. The aforementioned PMI and first signal solve the technical problem in the prior art of lacking signals for measuring the spatial statistics of interference.

[0037] As one possible implementation, the network device sending a PMI to the first device includes: configuring the PMI to the first device via higher-layer signaling; or sending the PMI to the first device via DCI, where the DCI uses a first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0038] In this embodiment of the application, since the network devices are configured with different RNTIs for different devices, the first device can find the DCI it needs from the several DCIs sent by the network devices through the first RNTI, so as to achieve accurate point-to-point information transmission and thereby improve the security of DCI transmission.

[0039] The fifth aspect discloses a communication device, which may be a first device or a module (e.g., a chip) within the first device. The communication device may include:

[0040] The receiving unit is used to receive the first information;

[0041] A determining unit is configured to determine a first sequence based on the first information;

[0042] The receiving unit is further configured to receive a first signal, wherein the first sequence and the first signal are used to estimate interference from the network device to the first device.

[0043] In one possible implementation, the first signal is a signal sent by the network device to the second device, the second device being any terminal device within the coverage area of ​​the network device, and the first signal is used by the second device to perform channel estimation.

[0044] In one possible implementation, the first information includes scrambling code information, and the determining unit is specifically used to determine a first sequence based on the scrambling code information.

[0045] As one possible implementation, the first information further includes an identifier of the antenna port that transmits the first signal, and the receiving unit receiving the first signal includes:

[0046] The CDM group to which the first signal belongs and the OCC sequence used by the first signal are determined based on the identifier;

[0047] The first signal is received according to the CDM group and the OCC sequence.

[0048] As one possible implementation, the first information is configured by higher-level signaling;

[0049] Alternatively, the first information may be indicated via DCI, which uses a first RNTI for scrambling, the first RNTI being configured by higher-layer signaling.

[0050] As one possible implementation, the communication device may further include:

[0051] An estimation unit is configured to estimate the interference of the network device on the first device based on the first sequence and the first signal.

[0052] As one possible implementation, the estimation unit is specifically used for:

[0053] Channel estimation is performed based on the first sequence and the first signal;

[0054] The interference corresponding to the sub-band to which the first signal belongs is determined based on the estimation results;

[0055] Based on the interference, determine the spatial statistics of the interference of the network device to the first device.

[0056] As one possible implementation, the first sequence and the first signal used to estimate interference from the network device to the first device include:

[0057] The first sequence and the first signal are used for channel estimation. Based on the estimation result, the interference corresponding to the sub-band to which the first signal belongs is determined. Based on the interference, spatial statistics of the interference between the network device and the first device are determined.

[0058] The sixth aspect discloses a communication device, which may be a network device or a module (e.g., a chip) within a network device. The communication device may include:

[0059] A sending unit is configured to send first information to a first device, wherein the first information is used to determine a first sequence;

[0060] The transmitting unit is further configured to transmit a first signal to the second device, the first signal being used by the second device to perform channel estimation, and the first signal also being used by the first device to estimate the interference of the network device on the first device based on the first sequence, wherein the second device is any terminal device within the coverage area of ​​the network device.

[0061] As one possible implementation, the first information includes scrambling information, and the first information used to determine the first sequence includes:

[0062] The scrambling code information is used to determine the first sequence.

[0063] As one possible implementation, the first information may also include an identifier of the antenna port that transmits the first signal, the identifier being used by the first device to receive the first signal.

[0064] As one possible implementation, the sending unit sending first information to the first device includes:

[0065] Configure the first information to the first device via higher-level signaling; or

[0066] First information is sent to a first device via DCI, wherein the DCI uses a first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0067] The seventh aspect discloses a communication device, which may be a first device or a module (e.g., a chip) within the first device. The communication device may include:

[0068] The receiving unit is used to receive PMI;

[0069] The receiving unit is further configured to receive a first signal, wherein the PMI and the first signal are used to estimate the interference of the network device on the first device.

[0070] In one possible implementation, the first signal is a signal sent by the network device to the second device, the second device being any terminal device within the coverage area of ​​the network device, and the first signal is used by the second device to perform channel estimation.

[0071] As one possible implementation, the PMI is configured by higher-layer signaling;

[0072] Alternatively, the PMI may be indicated via DCI, which uses a first RNTI for scrambling, the first RNTI being configured by higher-layer signaling.

[0073] As one possible implementation, the communication device may further include:

[0074] An estimation unit is used to estimate the interference of the network device on the first device based on the PMI and the first signal.

[0075] As one possible implementation, the estimation unit is specifically used for:

[0076] The first sequence is determined based on the scrambling code information;

[0077] Channel estimation is performed based on the first sequence and the first signal to obtain the sub-band channel of the sub-band to which the first signal belongs;

[0078] Based on the sub-band channel and the PMI corresponding to the sub-band to which the first signal belongs, determine the spatial statistics of the interference of the network device to the first device.

[0079] As one possible implementation, the communication device may further include:

[0080] A determining unit is used to determine a first sequence based on scrambling code information, which is configured via higher-layer signaling.

[0081] The PMI and the first signal are used to estimate the interference of the network device on the first device, including:

[0082] The PMI and the first signal are used to perform channel estimation using the first signal and the first sequence to obtain the sub-band channel of the sub-band to which the first signal belongs. Based on the sub-band channel and the PMI corresponding to the sub-band to which the first signal belongs, spatial statistics of network device interference to the first device are determined.

[0083] The eighth aspect discloses a communication device, which may be a network device or a module (e.g., a chip) within a network device. The communication device may include:

[0084] The sending unit is used to send PMI to the first device;

[0085] The transmitting unit is further configured to transmit a first signal to the second device. The first signal is used by the second device to perform channel estimation. The first signal is also used by the first device to estimate the interference of the network device on the first device based on the PMI. The second device is any terminal device within the coverage area of ​​the network device.

[0086] As one possible implementation, the sending unit sending the PMI to the first device includes:

[0087] Configure PMI to the first device via higher-level signaling; or

[0088] The PMI is sent to the first device via DCI, which uses a first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0089] A ninth aspect discloses a communication device, which may be a first device or a module (e.g., a chip) within the first device. The communication device may include a processor, a memory, an input interface, and an output interface. The input interface is used to receive information from other communication devices besides the communication device, and the output interface is used to output information to other communication devices besides the communication device. When the processor executes a computer program stored in the memory, the processor performs the communication method disclosed in the first aspect or any embodiment of the first aspect.

[0090] The tenth aspect discloses a communication device, which may be a network device or a module (e.g., a chip) within a network device. The communication device may include a processor, a memory, an input interface, and an output interface. The input interface is used to receive information from other communication devices besides the communication device, and the output interface is used to output information to other communication devices besides the communication device. When the processor executes a computer program stored in the memory, the processor performs the communication method disclosed in the second aspect or any embodiment of the second aspect.

[0091] The eleventh aspect discloses a communication device, which may be a first device or a module (e.g., a chip) within the first device. The communication device may include a processor, a memory, an input interface, and an output interface. The input interface is used to receive information from other communication devices besides the communication device, and the output interface is used to output information to other communication devices besides the communication device. When the processor executes a computer program stored in the memory, the processor performs the communication method disclosed in the third aspect or any embodiment of the third aspect.

[0092] The twelfth aspect discloses a communication device, which may be a network device or a module (e.g., a chip) within a network device. The communication device may include a processor, a memory, an input interface, and an output interface. The input interface is used to receive information from other communication devices besides the communication device, and the output interface is used to output information to other communication devices besides the communication device. When the processor executes a computer program stored in the memory, the processor performs the communication method disclosed in the fourth aspect or any embodiment of the fourth aspect.

[0093] The thirteenth aspect discloses a communication system, which includes the communication device of the ninth aspect and the communication device of the tenth aspect.

[0094] The fourteenth aspect discloses a communication system, which includes the communication device of the eleventh aspect and the communication device of the twelfth aspect.

[0095] The fifteenth aspect discloses a computer-readable storage medium storing a computer program or computer instructions that, when executed, implement the communication methods disclosed in the above aspects.

[0096] The sixteenth aspect discloses a chip including a processor for executing a program stored in a memory, which, when executed, causes the chip to perform the above-described method.

[0097] As one possible implementation, the memory is located outside the chip.

[0098] The seventeenth aspect discloses a computer program product comprising computer program code, which, when executed, causes the aforementioned communication method to be performed. Attached Figure Description

[0099] Figure 1 This is a schematic diagram of a business activity based on the above-mentioned industries as disclosed in an embodiment of this application;

[0100] Figure 2 This is a schematic diagram of a network architecture disclosed in an embodiment of this application;

[0101] Figure 3 This is a schematic diagram of another network architecture disclosed in an embodiment of this application;

[0102] Figure 4 This is a schematic diagram of configuration types 1 and 2 disclosed in an embodiment of this application;

[0103] Figure 5 This is a flowchart illustrating a communication method disclosed in an embodiment of this application;

[0104] Figure 6This is a flowchart illustrating another communication method disclosed in an embodiment of this application;

[0105] Figure 7 This is a schematic diagram of the structure of a communication device disclosed in an embodiment of this application;

[0106] Figure 8 This is a schematic diagram of another communication device disclosed in an embodiment of this application;

[0107] Figure 9 This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application;

[0108] Figure 10 This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application;

[0109] Figure 11 This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application;

[0110] Figure 12 This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application. Detailed Implementation

[0111] This application discloses a communication method, apparatus, and computer-readable storage medium for eliminating interference. These will be described in detail below.

[0112] To better understand the embodiments of this application, the application scenarios of these embodiments are described below. In wireless communication systems, communication can be classified into different types according to the different types of transmitting and receiving nodes. Generally, communication from a network device to a terminal device is called downlink (DL) communication, and communication from a terminal device to a network device is called uplink (UL) communication. In fifth-generation wireless communication systems, namely new radio (NR) systems, the time domain can be divided into multiple radio frames. Each radio frame can include multiple time slots, and each time slot can include multiple symbols, such as orthogonal frequency division multiplexing (OFDM) symbols. The length of a radio frame can be 10 ms, and a time slot can include 14 symbols. When the subcarrier space (SCS) is 15 kHz, the time domain length of a time slot can be 1 ms; when the SCS is 30 kHz, the time domain length of a time slot can be 0.5 ms. The transmission direction of symbols in a time slot can be DL, UL, or flexible. The combination of transmission directions of symbols within a time slot can be understood as the format of that time slot. For example, the current NR TS38.211 standard specifies several time slot formats, as shown in Table 1:

[0113]

[0114] Table 1. Time Slot Format

[0115] In Table 1, D represents DL, U represents UL, and X represents flexible. A time slot with format 0 can be called a downlink time slot, and a time slot with format 1 can be called an uplink time slot. Taking format 27 as an example, format 27 indicates that the first 3 symbols of a time slot are used for DL ​​(or DL ​​transmission), the last 3 symbols are used for UL (or UL transmission), and the middle 8 symbols are used for flexible (or flexible transmission).

[0116] NR supports Time Duplexing (TDD). Network devices can implement TDD by alternately configuring uplink and downlink time slots on the same carrier. In the time domain, the ratio between uplink and downlink time slots can be called the TDD uplink / downlink ratio. For example, 8:2 is a very common ratio scheme in current networks, meaning that every 10 time slots include 8 consecutive downlink time slots followed by 2 consecutive uplink time slots. The reason why the number of downlink time slots is much greater than the number of uplink time slots is that most cellular cells are primarily for downlink services, but there are exceptions, such as microcells in factories.

[0117] Within the factory's micro-enclosure, each machine is monitored by a high-definition camera to record video and determine its operational status. This means that the primary business direction within the micro-enclosure is upstream, where cameras transmit real-time recorded video to network devices. To meet upstream business demands, the micro-enclosure's upstream / downstream allocation is primarily based on upstream time slots.

[0118] Please see Figure 1 , Figure 1 This is a schematic diagram illustrating one of the above-mentioned business operations as disclosed in an embodiment of this application. For example... Figure 1 As shown, this includes two types of cells: macro cells and micro cells. The base station for a macro cell is called a macro station, and the base station for a micro cell is called a micro station. Macro stations use a conventional uplink / downlink ratio with more downlink than uplink, such as... Figure 1 In the DSUDD frame outside the central area, S stands for special frame, which can be understood as a DL frame. Microcells use a more uplink than downlink ratio, such as... Figure 1 The USUUU (Unidirectional Usage and Interchange) within the central cell results in a situation where, within the same time slot, data is downlink for the macro cell but uplink for the micro cell. This type of time slot can be called a macro-micro mismatch time slot, or simply mismatch time slot. The macro cell sends downlink data to the macro user equipment (UE) it serves during the mismatch time slot, but this downlink data is also received by the micro cell that is about to receive uplink data sent by the micro UE, causing neighbor cell interference, or cross-link interference (CLI).

[0119] Macro base stations can achieve beamforming by assigning different weights to the signals on different transmit antennas. The vector or matrix formed by the weights of all antennas in this case is called precoding. Precoding can give the transmitted signal a certain directionality. For example, if all antennas in a base station use "1" as the weight for the signal, meaning that the transmitted signals from all antennas are the same, then the distance from the receiver located in the "normal direction of the antenna array" to all antennas is the same. Therefore, the phase of the transmitted signals from all antennas to the receiver is the same, achieving directional superposition and enhancing signal energy. This characteristic can be called the transmitted signal pointing in that direction, i.e., the transmitted signal pointing in the normal direction of the antenna array. Since macro base stations in NR are typically equipped with up to 192 antennas, their beam directivity is extremely strong, meaning that the signal emitted by the macro base station will have one or more directions, and the transmitted energy is concentrated in these directions. If micro base stations can estimate these directions, advanced receivers can be used to obtain better reception and demodulation performance compared to when there is no such directional information. The direction can be estimated by estimating the covariance matrix of the interference channel. Therefore, how to eliminate the interference of one access network device to another access network device within its coverage area has become an urgent technical problem to be solved.

[0120] To better understand the communication method, apparatus, and computer-readable storage medium disclosed in the embodiments of this application, the network architecture used in the embodiments of this application is described below. Please refer to... Figure 2 , Figure 2 This is a schematic diagram of a network architecture disclosed in an embodiment of this application. For example... Figure 2 As shown, the network architecture may include at least network device 101, network device 102, terminal device 103, and terminal device 104. The coverage area, i.e., the service range, of network device 101 is... Figure 2 The largest ellipse is located in the area covered by network device 101. Network device 102, terminal device 103, and terminal device 104 are all within the coverage area of ​​network device 101. Network device 101 can send information to terminal device 103 via the physical downlink control channel (PDCCH) and physical downlink share channel (PDSCH). Terminal device 103 can send information to network device 101 via the physical uplink control channel (PUCCH) and physical uplink share channel (PUSCH). The coverage area, i.e., the service area, of network device 102 is... Figure 2The smallest ellipse is located in the area. Terminal device 104 is within the coverage area of ​​network device 102. Network device 102 can send information to terminal device 104 via PDCCH and PDSCH. Terminal device 104 can send information to network device 102 via PUCCH and PUSCH. Network device 101 can send information to network device 102 via PDCCH. For example, when network device 101 sends a signal to terminal device 103, and terminal device 104 sends a signal to network device 102, since network device 102 is within the coverage area of ​​network device 101, network device 102 can receive not only the signal from terminal device 104, but also the signal sent from network device 101 to terminal device 103.

[0121] Please see Figure 3 , Figure 3 This is a schematic diagram of another network architecture disclosed in an embodiment of this application. For example... Figure 3 As shown, this network architecture may include at least network device 101 and terminal devices 102-104. The coverage area, i.e., the service range, of network device 101 is... Figure 2 The elliptical region is defined in the diagram. Terminal devices 102-104 are all within the coverage area of ​​network device 101. Network device 101 can send information to terminal devices 102-104 via PDCCH and PDSCH. Terminal devices 102-104 can send information to network device 101 via PUCCH and PUSCH. Terminal devices 102-104 can communicate with each other via sidelinks. For example, when network device 101 sends a signal to terminal device 102, and terminal device 104 simultaneously sends a signal to terminal device 103, since terminal device 103 is within the coverage area of ​​network device 101, terminal device 103 can receive not only the signal from terminal device 104 but also the signal sent from network device 101 to terminal device 102.

[0122] Terminal equipment, also known as UE, mobile station (MS), mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to users. Terminal devices can include handheld terminals, laptops, subscriber units, cellular phones, smartphones, wireless data cards, personal digital assistant (PDA) computers, tablet computers, wireless modems, handheld devices, laptop computers, cordless phones, wireless local loop (WLL) stations, machine-type communication (MTC) terminals, wearable devices (such as smartwatches, smart bracelets, pedometers, etc.), in-vehicle equipment (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electricity meters, etc.), intelligent robots, workshop equipment, wireless terminals in self-driving vehicles, wireless terminals in remote medical surgery, and smart grids. Wireless terminals in a grid, wireless terminals in transportation safety, wireless terminals in a smart city, or wireless terminals in a smart home, flying equipment (e.g., intelligent robots, hot air balloons, drones, airplanes), or other devices that can access the network. Figure 1 The terminal device shown is a UE, which is only an example and does not limit the terminal device. The UE can access the DN by establishing a session between the UE-(R)AN device-UPF-DN, that is, a protocol data unit (PDU) session.

[0123] Network equipment provides wireless access for terminal devices, primarily responsible for functions such as air interface-side wireless resource management, Quality of Service (QoS) flow management, data compression, and encryption. Network equipment can include various types of base stations, such as macro base stations, micro base stations (also known as small cells), relay stations, and access points. Network equipment can also include wireless fidelity (WiFi) access points (APs). Furthermore, network equipment can include Worldwide Interoperability for Microwave Access (WiMAX) base stations (BSs).

[0124] It should be noted that, Figure 2 and Figure 3 The network devices or terminal devices in the illustrated network architecture are for illustrative purposes only and do not limit the network architecture. For example, a communication system may include more or fewer network devices or terminal devices.

[0125] It should be noted that, Figure 2 and Figure 3 The network devices or terminal devices shown can be hardware, software based on functional distinctions, or a combination of both. Network devices and terminal devices can communicate directly or through other devices or network elements.

[0126] To better understand the communication method and apparatus disclosed in the embodiments of this application, some concepts and users will be introduced below.

[0127] To ensure the security of information carried on the PDCCH, network devices can scramble the PDCCH using RNTI. Network devices can configure different RNTIs for different devices via higher-layer signaling, and also configure different RNTIs for different services on the same device via higher-layer signaling. Therefore, the PDCCH sent by a network device can only be successfully received by devices configured with the correct RNTI, thus ensuring that the network device sends certain information to designated devices.

[0128] The PDSCH transmitted by network devices can include downlink data and reference signals required for measuring the channel, such as demodulation reference signals (DMRS). PDSCH supports highly flexible DMRS position configuration. Based on the position of the first DMRS in the PDSCH symbol, DMRS can be classified into Type A and Type B, also known as the resource mapping Type A / B used by the DMRS. Assume the position of the first DMRS in the PDSCH symbol is l0. For Type A, l0 can be configured by the higher-layer parameter dmrs-TypeA-Position. For Type B, l0 = 0, meaning the first DMRS symbol is located in the first OFDM symbol of the scheduled PDSCH. Types A and B can be shown in Table 2.

[0129]

[0130]

[0131] Table 2 Time Domain Location Table of DMRS

[0132] Based on the temporal granularity, DMRS can be divided into single-symbol and double-symbol DMRS. Single-symbol DMRS refers to DMRS symbols that are discontinuous in the time domain. For example, DMRS may appear on symbols 3, 5, 8, and 11. Double-symbol DMRS occurs in pairs in the time domain. For example, DMRS may appear on symbols 3, 4, 9, and 10.

[0133] Based on the orthogonal cover code (OCC) type (or code division multiplexing (CDM) group type) used by DMRS, DMRS can be divided into configuration types 1 and 2. In configuration type 1, a single symbol supports a maximum of 4 ports, and a dual-symbol support a maximum of 8 ports. In configuration type 2, a single symbol supports a maximum of 6 ports, and a dual-symbol support a maximum of 12 ports. (See also...) Figure 4 , Figure 4 This is a schematic diagram illustrating configuration types 1 and 2 disclosed in an embodiment of this application. For example... Figure 4 As shown, different filled squares represent different CDMgroups. Configuration type 1 includes two CDMgroups. Configuration type 2 includes three CDMgroups. Each CDMgroup includes 4 antenna ports. Therefore, configuration type 1 supports 8 antenna ports, and configuration type 2 supports 12 antenna ports.

[0134] Based on the above network architecture, please refer to Figure 5 , Figure 5This is a flowchart illustrating a communication method disclosed in an embodiment of this application. Figure 5 As shown, the communication method may include the following steps.

[0135] 501. The network device sends the first information to the first device.

[0136] A network device can send first information to a first device. In one case, the network device can configure the first information to the first device via higher-layer signaling. In another case, the network device can send the first information to the first device via DCI. Sending the first information to the first device via DCI can be understood as instructing the first device to send the first information via DCI. This instruction can be explicit or implicit, and is not limited here.

[0137] Accordingly, the first device receives the first information from the network device.

[0138] The first piece of information may include information about the scrambling code.

[0139] A network device can configure a first RNTI for a first device, that is, configure a dedicated RNTI between the network device and the first device. The network device can configure the first RNTI to the first device through higher-layer signaling, through a predefined method, or through other methods, which are not limited here.

[0140] When a network device needs to send a DCI to the first device, the network device can scramble the DCI using the first RNTI. The DCI can then be transmitted over the PDCCH.

[0141] When the first device is a network device, it can determine the aggregation level of the PDCCH through higher-layer signaling or a predefined method. Since network devices are generally installed at a relatively high height, the channels between network devices typically have direct paths (i.e., no obstructions in between), resulting in generally strong channel quality that remains relatively stable over time. Therefore, a lower aggregation level can be specified for the PDCCH transmitted on this channel. This not only reduces transmission resources (corresponding to good channel quality) but also reduces the number of blind detections at the receiver (corresponding to minimal changes in channel quality), thereby reducing the complexity at the receiver.

[0142] 502. The network device sends the first signal to the second device.

[0143] When there is a business need, the network device can send a first signal to the second device. Correspondingly, the second device can receive the first signal from the network device. Furthermore, since the first device is within the coverage area of ​​the network device, it can also receive the first signal from the network device.

[0144] When a network device sends first information to a first device via DCI, the first information may also include an identifier of the antenna port that sends the first signal, that is, an identifier of the antenna port used by the network device to send the first signal.

[0145] When the network device configures the first information to the first device through higher-layer signaling, the network device also needs to send the aforementioned antenna port identifier to the first device through DCI.

[0146] In one scenario, a network device can configure the parameters of a first signal to a first device via higher-layer signaling. For example, when the first signal is DMRS, the parameters of the first signal may include resource mapping type (type A / B), DMRS symbol position, DMRS consecutive symbol position (single / double symbol), configuration type (type 1 / 2), etc.

[0147] In another scenario, the network device can send parameters of the first signal to the first device via DCI, i.e., the network device sends DCI to the first device, and the DCI may include parameters of the first signal.

[0148] After receiving the identifier of the antenna port from the network device that transmits the first signal, the first device can first determine the CDM group to which the first signal belongs and the OCC sequence used by the first signal based on the identifier of the antenna port that transmits the first signal. Then, it can receive the first signal based on the CDM group and the OCC sequence.

[0149] After receiving the parameters of the first signal from the network device, the first device can first determine the transmission location of the first signal based on the parameters of the first signal, and then receive the first signal at the transmission location.

[0150] For example, after the first device receives the parameters of the first signal from the network device and the identifier of the antenna port transmitting the first signal, the first device can first determine whether it is... Figure 4 Whether it's the top or bottom diagram, the specific location in the diagram determined above can be determined based on the identifier of the antenna port that transmits the first signal, i.e., the CDM group to which the first signal belongs and the OCC sequence used by the first signal. Figure 4 The 1000 in the code indicates the antenna port.

[0151] 503. The first device determines the first sequence based on the first information.

[0152] After receiving first information from the network device, the first device can determine a first sequence based on the first information. If the first information includes scrambling code information, the first device can determine the first sequence based on the scrambling code information. The scrambling code information may include information about one scrambling code or information about multiple scrambling codes. If the scrambling code information includes information about one scrambling code, the first sequence is one; if the scrambling code information includes information about multiple scrambling codes, the first sequence is multiple.

[0153] When a network device sends the first information to a first device via a DCI, the first device can first descramble the DCI using a first RNTI to obtain scrambling code information. The scrambling code information can be the scrambling code's identity (ID), or other information that can be used to uniquely identify the scrambling code. The first sequence can be a pseudo-random sequence, a ZC (Zadoff-Chu) sequence, or other sequences, without limitation.

[0154] The scrambling information can be the scrambling information of DMRS or the scrambling information of other reference signals, without any limitation.

[0155] To reduce the number of scrambling code indicator bits, network devices can configure a set of scrambling code information for the first device. For example, the standard specifies that the ID of the DMRS scrambling code for a terminal device is a number from 0 to 65535, i.e., 16 bits of information. Therefore, the scrambling code information for each terminal device in the DCI needs to be notified through 16 bits. If there is scrambling code information for 10 terminal devices, the DCI will include at least 160 bits of scrambling code information, which is not conducive to the correct transmission of the DCI. Therefore, network devices can configure a set of DMRS scrambling code information for terminal devices within the network device's coverage area for the first device based on the access situation of terminal devices in the cell. For example, at a certain moment, a total of 64 terminal devices have accessed the network device and are waiting to be served by the network device. Their scrambling code IDs are {ID1, ID2, ..., ID64}, and the network device can configure this set for the first device. When the network device needs to notify the scrambling code information using the DCI, it can use the sequence number of the element in the set (64 elements in total, 6 bits of information) instead of the 16 bits of scrambling code information. Taking the scrambling code information of 10 terminal devices in DCI as an example, the scrambling code information in DCI is reduced from 160 bits to 60 bits. This shows that the DCI load can be reduced, thereby improving the reliability of DCI transmission.

[0156] 504. The first device estimates the interference of the network device on the first device based on the first sequence and the first signal.

[0157] After determining the first sequence and receiving the first signal, the first device can estimate the interference from the network device to the first device based on the first sequence and the first signal. The first device can first perform channel estimation based on the first sequence and the first signal. For example, the first device can use a discrete fourier transform (DFT) on the first signal to obtain a frequency domain signal. Dividing the frequency domain signal at each frequency point by the corresponding element of the first sequence yields a preliminary channel estimate. Finally, Wiener filtering is used to filter out rapidly changing components of the channel, and the result is the channel estimation result. Under such filtering, the first device can distinguish whether the energy in the first signal originates from the first sequence of the network device or other signals. Then, the first device can determine the sub-band to which the first signal belongs based on the estimation result. Specifically, the first device can determine the sub-band to which the first signal belongs based on its relationship with the predefined channel fading threshold of the network device. If the estimated channel fading value is higher than the threshold value in a certain sub-band, the first device considers the first signal to be transmitted in this sub-band; conversely, if it is lower than the threshold value, the first device considers the first signal not to be transmitted in this sub-band. Finally, the first device can determine the spatial statistics of the interference from the network device to the first device based on the interference corresponding to the subband to which the first signal belongs. The channel fading value here is generally negative. For example, if the channel fading threshold is -100dB and the channel fading value is -90dB, then the channel fading value is greater than the channel fading threshold. When the channel fading value is defined as the absolute value of the aforementioned channel fading value, the phrase "greater than" becomes "lower than," and vice versa. For example, if the channel fading threshold is 100dB and the channel fading value is 90dB, then the channel fading value is less than the channel fading threshold. The spatial statistics of the interference can be the covariance matrix of the interference (i.e., the second moment), or the third moment of the interference, or other higher-order moments of the third order or above.

[0158] Since network devices typically schedule terminal devices and transmit downlink data only in certain subbands, a reference signal is generally only transmitted within that subband. Therefore, when the first device performs channel estimation using the reference signal across the entire frequency band, it can clearly detect two signals with different energies. Using a predefined threshold or other scheme, the first device can distinguish between these two signals based on their energy. A higher energy signal indicates that the network device has transmitted the reference signal in that subband; in this case, the first device can perform channel estimation using the reference signal and calculate the spatial statistics corresponding to the matrix. A lower energy signal indicates that the network device has not transmitted the reference signal in that subband; in this case, the first device does not consider there to be any interference to it in that subband.

[0159] The network device can calculate the sub-band to which the reference signal belongs and the corresponding spatial statistics of the interference for each reference signal corresponding to the DCI, according to the above scheme. Then, the network device can sum these spatial statistics to obtain the spatial statistics of the interference from the network device to the first device.

[0160] 505. The second device performs channel estimation based on the first signal.

[0161] After receiving the first signal from the network device, the second device can perform channel estimation based on the first signal.

[0162] Based on the above network architecture, please refer to Figure 6 , Figure 6 This is a flowchart illustrating another communication method disclosed in an embodiment of this application. Figure 6 As shown, the communication method may include the following steps.

[0163] 601. The network device sends a PMI to the first device.

[0164] The network device can send a PMI to the first device. In one case, the network device can configure the PMI to the first device via higher-layer signaling. In another case, the network device can send the PMI to the first device via DCI. For a detailed description, please refer to the relevant description in step 501.

[0165] Accordingly, the first device receives the PMI from the network device.

[0166] Network devices can configure scrambling information to the first device via higher-level signaling.

[0167] Other descriptions can be found in step 501.

[0168] 602. The network device sends a first signal to the second device.

[0169] For a detailed description of step 602, please refer to step 502. Furthermore, the first signal may also be a channel state information reference signal (CSI-RS).

[0170] 603. The first device estimates the interference of the network device on the first device based on the PMI and the first signal.

[0171] After receiving the PMI and the first signal from the network device, the first device can estimate the interference of the network device on the first device based on the PMI and the first signal. The first device can first determine the first sequence based on the scrambling code information, and then perform channel estimation based on the first sequence and the first signal to obtain the sub-band channel of the sub-band to which the first signal belongs. Then, the first device can determine the spatial statistics of the network device's interference with the first device based on the sub-band channel of the sub-band to which the first signal belongs and the PMI corresponding to the sub-band to which the first signal belongs. The first device can first determine the beam direction corresponding to the first signal based on the sub-band channel of the sub-band to which the first signal belongs and the PMI corresponding to the sub-band to which the first signal belongs; for example, it can multiply the sub-band channel of the sub-band to which the first signal belongs by the PMI corresponding to the sub-band to which the first signal belongs. Then, the first device can determine the spatial statistics of the network device's interference with the first device based on the beam direction corresponding to the first signal. For a detailed description, please refer to step 504.

[0172] 604. The second device performs channel estimation based on the first signal.

[0173] For a detailed description of steps 601-604, please refer to the relevant descriptions in steps 501-505.

[0174] It should be understood that the functions performed by the network device in the above communication method can also be performed by modules (e.g., chips) in the network device, the functions performed by the first device can also be performed by modules (e.g., chips) in the first device, and the functions performed by the second device can also be performed by modules (e.g., chips) in the second device.

[0175] Based on the above network architecture, please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of a communication device disclosed in an embodiment of this application. Figure 7 As shown, the communication device may include:

[0176] The receiving unit 701 is used to receive the first information;

[0177] Determining unit 702 is used to determine a first sequence based on first information;

[0178] The receiving unit 701 is also configured to receive a first signal, the first sequence and the first signal being used to estimate interference from the network device to the first device.

[0179] In one embodiment, the first signal is a signal sent by the network device to the second device, the second device being any terminal device within the coverage area of ​​the network device, and the first signal is used by the second device to perform channel estimation.

[0180] In one embodiment, the first information may include scrambling code information, and the determining unit 702 is specifically used to determine the first sequence based on the scrambling code information.

[0181] In one embodiment, the first information may further include an identifier of the antenna port that transmits the first signal, and the receiving unit receiving the first signal includes:

[0182] The CDM group to which the first signal belongs and the OCC sequence used by the first signal are determined based on the antenna port identifier;

[0183] The first signal is received based on the CDM group and OCC sequence.

[0184] In one embodiment, the first information is configured by higher-layer signaling; or the first information is indicated by DCI, which uses a first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0185] In one embodiment, the communication device may further include:

[0186] The estimation unit 703 is used to estimate the interference of the network device on the first device based on the first sequence and the first signal.

[0187] In one embodiment, the estimation unit 703 is specifically used for:

[0188] Channel estimation is performed based on the first sequence and the first signal;

[0189] Based on the estimation results, determine the interference corresponding to the sub-band to which the first signal belongs;

[0190] Spatial statistics of network device interference to the first device are determined based on the interference in the subband to which the first signal belongs.

[0191] For a more detailed description of the receiving unit 701, determining unit 702, and estimating unit 703, please refer directly to the above description. Figure 5 The relevant description of the first device in the method embodiment shown is obtained directly and will not be repeated here.

[0192] Based on the above network architecture, please refer to Figure 8 , Figure 8 This is a schematic diagram of another communication device disclosed in an embodiment of this application. For example... Figure 8 As shown, the communication device may include:

[0193] The sending unit 801 is used to send first information to the first device, the first information being used to determine a first sequence;

[0194] The transmitting unit 801 is also used to transmit a first signal to the second device. The first signal is used by the second device to perform channel estimation. The first signal is also used by the first device to estimate the interference of the network device on the first device according to the first sequence. The second device is any terminal device within the coverage area of ​​the network device.

[0195] In one embodiment, the first information may include scrambling information, and the first information used to determine the first sequence includes:

[0196] The scrambling information is used to determine the first sequence.

[0197] In one embodiment, the first information may further include an identifier of the antenna port that transmits the first signal, the identifier of the antenna port being used by the first device to receive the first signal.

[0198] In one embodiment, the sending unit 801 sends first information to the first device, including:

[0199] Configure the first information to the first device via higher-level signaling; or

[0200] The first information is sent to the first device via DCI. The DCI uses the first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0201] For a more detailed description of the aforementioned transmitting unit 801, please refer directly to the above. Figure 5 The descriptions of the network devices in the illustrated method embodiments are directly obtained and will not be repeated here.

[0202] Based on the above network architecture, please refer to Figure 9 , Figure 9 This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application. For example... Figure 9 As shown, the communication device may include:

[0203] Receiver unit 901 is used to receive PMI;

[0204] The receiving unit 901 is also used to receive a first signal, and the PMI and the first signal are used to estimate the interference of the network device on the first device.

[0205] In one embodiment, the first signal is a signal sent by the network device to the second device, the second device being any terminal device within the coverage area of ​​the network device, and the first signal is used by the second device to perform channel estimation.

[0206] In one embodiment, the PMI is configured by higher-layer signaling; or the PMI is indicated by the DCI, which uses a first RNTI for scrambling, and the first RNTI is configured by higher-layer signaling.

[0207] In one embodiment, the communication device may further include:

[0208] The estimation unit 902 is used to estimate the interference of the network device on the first device based on the PMI and the first signal.

[0209] In one embodiment, the estimation unit 902 is specifically used for:

[0210] The first sequence is determined based on the scrambling code information;

[0211] Channel estimation is performed based on the first sequence and the first signal to obtain the sub-band channel of the sub-band to which the first signal belongs;

[0212] Based on the PMI corresponding to the sub-band to which the first signal belongs and the sub-band channel of the sub-band to which the first signal belongs, determine the spatial statistics of the interference of the network device to the first device.

[0213] For a more detailed description of the receiving unit 901 and the estimation unit 902, please refer directly to the above. Figure 6 The relevant description of the first device in the method embodiment shown is obtained directly and will not be repeated here.

[0214] Based on the above network architecture, please refer to Figure 10 , Figure 10 This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application. For example... Figure 10 As shown, the communication device may include:

[0215] The sending unit 1001 is used to send PMI to the first device;

[0216] The transmitting unit 1001 is also used to transmit a first signal to the second device. The first signal is used by the second device to perform channel estimation. The first signal is also used by the first device to estimate the interference of the network device on the first device according to the PMI. The second device is any terminal device within the coverage area of ​​the network device.

[0217] In one embodiment, sending PMI to the first device by the sending unit 1001 includes:

[0218] Configure PMI to the first device via higher-level signaling; or

[0219] The PMI is sent to the first device via DCI. DCI uses the first RNTI for scrambling. The first RNTI is configured by higher-layer signaling.

[0220] For a more detailed description of the aforementioned transmitting unit 1001, please refer directly to the above. Figure 6 The descriptions of the network devices in the illustrated method embodiments are directly obtained and will not be repeated here.

[0221] Based on the above network architecture, please refer to Figure 11 , Figure 11This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application. For example... Figure 11 As shown, the communication device may include a processor 1101, a memory 1102, an input interface 1103, an output interface 1104, and a bus 1105. The memory 1102 may be independent and connected to the processor 1101 via the bus 1105. Alternatively, the memory 1102 may be integrated with the processor 1101. The bus 1105 is used to connect these components.

[0222] In one embodiment, the communication device can be a first device or a module (e.g., a chip) within the first device. When the computer program instructions stored in memory 1102 are executed, the processor 1101 is used to control the receiving unit 701 to perform the operations performed in the above embodiment. The processor 1101 is also used to perform the operations performed by the determining unit 702 and the estimating unit 703 in the above embodiment. The input interface 1103 is used to perform the operations performed by the receiving unit 701 in the above embodiment, and the output interface 1104 is used to send information to other communication devices besides the communication device. The first device or the module within the first device can also be used to perform the above... Figure 5 The various methods executed by the first device in the method embodiment will not be described in detail.

[0223] In one embodiment, the communication device can be a network device or a module (e.g., a chip) within a network device. When the computer program instructions stored in memory 1102 are executed, the processor 1101 controls the sending unit 801 to perform the operations performed in the above embodiment. The input interface 1103 is used to receive information from other communication devices besides the communication device itself, and the output interface 1104 is used to perform the operations performed by the sending unit 801 in the above embodiment. The network device or the module within the network device can also be used to perform the above... Figure 5 The various methods executed by the network device in the method embodiments will not be described in detail.

[0224] In one embodiment, the communication device can be a first device or a module (e.g., a chip) within the first device. When the computer program instructions stored in memory 1102 are executed, the processor 1101 is used to control the receiving unit 901 to perform the operations performed in the above embodiment. The processor 1101 is also used to perform the operations performed by the estimation unit 902 in the above embodiment. The input interface 1103 is used to perform the operations performed by the receiving unit 901 in the above embodiment, and the output interface 1104 is used to send information to other communication devices besides the communication device. The first device or the module within the first device can also be used to perform the above... Figure 6 The various methods executed by the first device in the method embodiment will not be described in detail.

[0225] In one embodiment, the communication device can be a network device or a module (e.g., a chip) within a network device. When the computer program instructions stored in memory 1102 are executed, the processor 1101 controls the sending unit 1001 to perform the operations performed in the above embodiment. The input interface 1103 is used to receive information from other communication devices besides the communication device itself, and the output interface 1104 is used to perform the operations performed by the sending unit 1001 in the above embodiment. The network device or the module within the network device can also be used to perform the above... Figure 6 The various methods executed by the network device in the method embodiments will not be described in detail.

[0226] Based on the above network architecture, please refer to Figure 12 , Figure 12 This is a schematic diagram of the structure of another communication device disclosed in the embodiments of this application. For example... Figure 12 As shown, the communication device may include an input interface 1201, a logic circuit 1202, and an output interface 1203. The input interface 1201 and the output interface 1203 are connected via the logic circuit 1202. The input interface 1201 is used to receive information from other communication devices, and the output interface 1203 is used to output, schedule, or send information to other communication devices. The logic circuit 1202 is used to perform operations other than those of the input interface 1201 and the output interface 1203, such as implementing the functions implemented by the processor 1101 in the above embodiments. The communication device may be a network device or a module of a network device, or it may be a first device or a module of a first device. A more detailed description of the input interface 1201, the logic circuit 1202, and the output interface 1203 can be directly obtained by referring to the relevant descriptions of the network device and the first device in the above method embodiments, and will not be repeated here.

[0227] This application also discloses a computer-readable storage medium storing instructions thereon, which, when executed, perform the methods described in the above method embodiments.

[0228] This application also discloses a computer program product including instructions that, when executed, perform the methods described in the above method embodiments.

[0229] This application also discloses a communication system, which includes a network device, a first device, and a second device, as detailed in the following description. Figure 5-6 The communication method shown.

[0230] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A communication method, characterized in that, Applied to a first network device; the method includes: Receive the first message; Determine the first sequence based on the first information; A first signal is received, and the first sequence and the first signal are used to estimate the interference of the second network device on the first network device; wherein, the first sequence is known information of the first signal, the first signal is a signal sent by the second network device to the second device, the second device is any terminal device within the coverage area of ​​the second network device, the first network device is within the coverage area of ​​the second network device, the first network device and the second network device are configured with different time slot ratios, and the first signal is used by the second device to perform channel estimation.

2. The method according to claim 1, characterized in that, The first information includes scrambling code information, and determining the first sequence based on the first information includes: The first sequence is determined based on the information of the scrambling code.

3. The method according to claim 2, characterized in that, The first information also includes an identifier of the antenna port that transmits the first signal, and receiving the first signal includes: The code division multiplexing (CDM) group to which the first signal belongs and the orthogonal code (OCC) sequence used by the first signal are determined based on the identifier. The first signal is received according to the CDM group and the OCC sequence.

4. The method according to any one of claims 1-3, characterized in that, The first information is configured by higher-level signaling; or The first information is indicated by downlink control information (DCI), which is scrambled using a first radio network temporary identifier (RNTI), configured by higher-layer signaling.

5. The method according to any one of claims 1-3, characterized in that, The first sequence and the first signal are used to estimate the interference of the second network device on the first network device, including: The first sequence and the first signal are used for channel estimation. Based on the estimation result, the interference corresponding to the sub-band to which the first signal belongs is determined. Based on the interference, spatial statistics of the interference of the second network device to the first network device are determined.

6. A communication method, characterized in that, Applied to a second network device, the method includes: Send first information to the first network device, the first information being used to determine a first sequence; the first network device is within the coverage area of ​​the second network device; the first network device and the second network device are configured with different time slot ratios; A first signal is sent to a second device. The first signal is used by the second device to perform channel estimation. The first signal is also used by the first network device to estimate the interference of the second network device on the first network device based on the first sequence. The second device is any terminal device within the coverage area of ​​the second network device. The first sequence is known information of the first signal.

7. The method according to claim 6, characterized in that, The first information includes scrambling code information, and the first information used to determine the first sequence includes: The scrambling code information is used to determine the first sequence.

8. The method according to claim 7, characterized in that, The first information also includes an identifier of the antenna port that transmits the first signal, the identifier being used by the first network device to receive the first signal.

9. The method according to any one of claims 6-8, characterized in that, Sending the first information to the first network device includes: Configure the first information to the first network device via higher-level signaling; or The first information is sent to the first network device via downlink control information (DCI), and the DCI is scrambled using the first radio network temporary identifier (RNTI), which is configured by higher-layer signaling.

10. A communication method, characterized in that, Applied to a first network device; the method includes: Receive the precoding matrix indication (PMI) and first information; the first information includes scrambling information. The first sequence is determined based on the information of the scrambling code; A first signal is received, the first sequence is known information of the first signal, the first sequence and the first signal are used to estimate the sub-band channel of the sub-band to which the interference of the second network device to the first network device belongs, and the PMI is used to determine the spatial statistics of the interference based on the sub-band channel; wherein, the first signal is a signal sent by the second network device to a second device, the second device is any terminal device within the coverage area of ​​the second network device, the first network device is within the coverage area of ​​the second network device, the first network device and the second network device adopt a heterogeneous time slot configuration, and the first signal is used by the second device to perform channel estimation.

11. A communication method, characterized in that, Applied to a second network device; the method includes: A precoding matrix indication (PMI) and first information are sent to a first network device; the first network device is within the coverage area of ​​a second network device; the first network device and the second network device are configured with different time slot ratios; the first information includes scrambling code information, which is used to determine a first sequence; A first signal is sent to a second device, the first sequence being known information of the first signal. The first signal is used by the second device to perform channel estimation. The first signal is also used by the first network device to estimate the sub-band channel of the sub-band to which the interference of the second network device to the first network device belongs based on the first sequence. The PMI is used to determine the spatial statistics of the interference based on the sub-band channel. The second device is any terminal device within the coverage area of ​​the second network device.

12. A communication device, characterized in that, include: The receiving unit is used to receive the first information; A determining unit is configured to determine a first sequence based on the first information; The receiving unit is further configured to receive a first signal, wherein the first sequence and the first signal are used to estimate the interference of the second network device on the first network device; wherein the first sequence is known information of the first signal, the first signal is a signal sent by the second network device to the second device, the second device is any terminal device within the coverage area of ​​the second network device, the first network device is within the coverage area of ​​the second network device, the first network device and the second network device are configured with different time slot ratios, and the first signal is used by the second device to perform channel estimation.

13. The apparatus according to claim 12, characterized in that, The first information includes scrambling code information, and the determining unit is specifically used to determine a first sequence based on the scrambling code information.

14. The apparatus according to claim 13, characterized in that, The first information also includes an identifier of the antenna port that transmits the first signal, and the receiving unit receives the first signal including: The code division multiplexing (CDM) group to which the first signal belongs and the orthogonal code (OCC) sequence used by the first signal are determined based on the identifier. The first signal is received according to the CDM group and the OCC sequence.

15. The apparatus according to any one of claims 12-14, characterized in that, The first information is configured by higher-level signaling; or The first information is indicated by downlink control information (DCI), which is scrambled using a first radio network temporary identifier (RNTI), configured by higher-layer signaling.

16. The apparatus according to any one of claims 12-14, characterized in that, The first sequence and the first signal are used to estimate the interference of the second network device on the first network device, including: The first sequence and the first signal are used for channel estimation. Based on the estimation result, the interference corresponding to the sub-band to which the first signal belongs is determined. Based on the interference, spatial statistics of the interference of the second network device to the first network device are determined.

17. A communication device, characterized in that, include: A sending unit is configured to send first information to a first network device, the first information being used to determine a first sequence; the first network device is within the coverage area of ​​a second network device; the first network device and the second network device are configured with different time slot ratios. The transmitting unit is further configured to transmit a first signal to the second device. The first signal is used by the second device to perform channel estimation. The first signal is also used by the first network device to estimate the interference of the second network device on the first network device based on the first sequence. The second device is any terminal device within the coverage area of ​​the second network device. The first sequence is known information of the first signal.

18. The apparatus according to claim 17, characterized in that, The first information includes scrambling code information, and the first information used to determine the first sequence includes: The scrambling code information is used to determine the first sequence.

19. The apparatus according to claim 18, characterized in that, The first information also includes an identifier of the antenna port that transmits the first signal, the identifier being used by the first network device to receive the first signal.

20. The apparatus according to any one of claims 17-19, characterized in that, The sending unit sends first information to the first network device, including: Configure the first information to the first network device via higher-level signaling; or The first information is sent to the first network device via downlink control information (DCI), and the DCI is scrambled using the first radio network temporary identifier (RNTI), which is configured by higher-layer signaling.

21. A communication device, characterized in that, include: The receiving unit is configured to receive a precoding matrix indication (PMI) and first information; the first information includes scrambling information. A determining unit is configured to determine a first sequence based on the information of the scrambling code; The receiving unit is further configured to receive a first signal, wherein the first sequence is known information of the first signal, and the first sequence and the first signal are used to estimate the sub-band channel of the sub-band to which the interference of the second network device to the first network device belongs. The PMI is used to determine the spatial statistics of the interference based on the sub-band channel. The first signal is a signal sent by the second network device to the second device, the second device is any terminal device within the coverage area of ​​the second network device, the first network device is within the coverage area of ​​the second network device, the first network device and the second network device are configured with different time slot ratios, and the first signal is used by the second device to perform channel estimation.

22. A communication device, characterized in that, include: A transmitting unit is configured to transmit a precoding matrix indication (PMI) and first information to a first network device; the first network device is within the coverage area of ​​a second network device; the first network device and the second network device are configured with different time slot ratios; the first information includes scrambling code information, which is used to determine a first sequence; The transmitting unit is further configured to transmit a first signal to the second device, wherein the first sequence is known information of the first signal, the first signal is used by the second device to perform channel estimation, and the first signal is also used by the first network device to estimate the sub-band channel of the sub-band to which the interference of the second network device to the first network device belongs based on the first sequence, wherein the PMI is used to determine the spatial statistics information of the interference based on the sub-band channel, and the second device is any terminal device within the coverage area of ​​the second network device.

23. A communication device, characterized in that, The device includes a processor, a memory, an input interface, and an output interface. The input interface is used to receive information from other communication devices besides the communication device, and the output interface is used to output information to other communication devices besides the communication device. The processor calls a computer program stored in the memory to implement the method as described in any one of claims 1-11.

24. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or computer instructions that, when executed, implement the method as described in any one of claims 1-11.

25. A chip, characterized in that, Includes a processor for executing a program stored in a memory, which, when executed, causes the chip to perform the method as described in any one of claims 1-11.

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