Channel quality determination method, communication apparatus, and related device

Abstract

The present application relates to the technical field of wireless communications, and in particular to a channel quality determination method, a communication apparatus, and a related device. The method comprises: receiving a first reference signal (RS) and a second RS from a network device; acquiring a third RS and a fourth RS, wherein the third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is a nonlinear combination of the first RS and the second RS; and determining first channel quality indication information of a terminal device on the basis of receiving parameters of the first RS, the second RS, the third RS, and the fourth RS. By adopting the method, more accurate channel quality indication information can be calculated in a fully connected HBF architecture, so that network scheduling decision can be improved, wireless resources can be allocated more effectively, the throughput and efficiency of a wireless communication network are improved, the receiving quality of the terminal device and the performance of the whole network are optimized, and the quality of service of the network and the user experience are further improved.

Description

A method for determining channel quality, a communication device and related equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 30, 2024, with application number 202410134795.9 and application name “A channel quality determination method, communication device and related equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a channel quality determination method, a communication device, and related equipment. Background Art

[0003] With the continuous development of wireless communication technology, in order to optimize transmission rates, terminal devices measure and obtain corresponding channel quality indicators based on reference signals (RS) sent by network devices, and then send this channel quality indicator information to the network devices. The network devices can then adjust the downlink modulation and coding scheme (MCS) based on this channel quality indicator information to optimize channel quality. In addition, due to the significant propagation loss of high-frequency wireless signals, the channel transmitter typically adopts a hybrid beamforming (HBF) architecture, such as a sub-array HBF architecture and a fully connected HBF architecture, to reduce system cost and power consumption. In particular, when network devices (such as base stations) adopt a fully connected HBF architecture, nonlinear interference components may exist not only in the main beam but also in non-main beams (i.e., combined beams of the main beam). Nonlinear interference components in the main beam can be eliminated by introducing digital pre-distortion (DPD), but nonlinear interference components in non-main beams cannot be eliminated, and these interference components will affect the channel quality of the terminal device.

[0004] However, existing methods that rely on RS to measure channel quality indicators can only measure inter-beam interference. They cannot measure nonlinear interference components, such as those generated by the combined beams of the main beam in a fully connected HBF architecture. Therefore, when network devices use a fully connected HBF architecture, the channel quality indicators measured using existing solutions are inaccurate, making it impossible for network devices to effectively optimize channel quality. Summary of the Invention

[0005] In order to solve the above problems, the present application provides a channel quality determination method, a communication device and related equipment, which can calculate more accurate channel quality indication information in a fully connected HBF architecture.

[0006] The present application is introduced below from multiple aspects. It is easy to understand that the implementation methods of the following multiple aspects can refer to each other.

[0007] In a first aspect, an embodiment of the present application provides a channel quality determination method. The method is applicable to a terminal device. The method includes: receiving a first reference signal (RS) and a second RS from a network device. Obtaining a third RS and a fourth RS. Here, the third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is a nonlinear combination of the first RS and the second RS. Determining first channel quality indication information of the terminal device based on reception parameters of the first RS, the second RS, the third RS, and the fourth RS.

[0008] In an embodiment of the present application, the network device can determine the third RS and the fourth RS that can be used to measure nonlinear interference based on the first RS and the second RS. Further, the terminal device can jointly calculate the channel quality indication information based on the reception parameters corresponding to the first RS, the second RS, the third RS, and the fourth RS, that is, the channel RS, the interference RS, and the virtual RS. In this way, the terminal device can calculate more accurate channel quality indication information based on the measurement results of linear interference and nonlinear interference. Therefore, the method provided by the present application can solve the problem in the prior art that the nonlinear interference component generated by the combined beam of the main beam in the fully connected HBF architecture cannot be measured, and the calculated channel quality indication information is more accurate.

[0009] In conjunction with the first aspect, in one possible implementation, the first RS and the second RS are transmitted at the same time. That is, the network device needs to send the first RS and the second RS simultaneously, which generates a third RS and a fourth RS for measuring nonlinear interference, thereby making the calculated channel quality indicator information more accurate.

[0010] In combination with the first aspect, in a possible implementation manner, the third RS is determined based on an intermodulation distortion (IMD) model, the first RS, and the second RS, and the fourth RS is determined based on the IMD model, the first RS, and the second RS.

[0011] In the above implementation, the third RS and the fourth RS, that is, the nonlinear interference amount under the fully connected HBF architecture, can be determined by the IMD model, the first RS, and the second RS, and used by the terminal device to calculate the channel quality indication information, thereby obtaining more accurate channel quality indication information.

[0012] In combination with the first aspect, in a possible implementation method, the third RS is obtained by the network device processing the first RS and the second RS through the IMD model, and the fourth RS is obtained by the network device processing the first RS and the second RS through the IMD model. Obtaining the third RS and the fourth RS includes: receiving data corresponding to the third RS and the fourth RS from the network device.

[0013] In the above implementation, the network device can first process the first RS and the second RS through the IMD model to obtain the third RS and the fourth RS, and then send the data corresponding to the third RS and the fourth RS to the terminal device, which can reduce the data processing amount of the terminal device.

[0014] In conjunction with the first aspect, in a possible implementation, obtaining the third RS and the fourth RS includes: processing the first RS and the second RS using an IMD model to obtain the third RS; and processing the first RS and the second RS using the IMD model to obtain the fourth RS.

[0015] In conjunction with the first aspect, in a possible implementation, the method further includes: receiving instruction information from a network device. Here, the instruction information is used to instruct the terminal device to determine the third RS and the fourth RS according to the IMD model.

[0016] In combination with the first aspect, in a possible implementation method, the first channel quality information of the terminal device is determined based on the receiving parameters of the first RS, the second RS, the third RS and the fourth RS, including: determining the first channel quality indication information of the terminal device based on the first receiving power of the first RS, the second receiving power of the second RS, the third receiving power of the third RS, the fourth receiving power of the fourth RS and the noise power in the process of receiving the first RS.

[0017] With reference to the first aspect, in a possible implementation, the channel quality indication information includes a signal-to-interference-plus-noise ratio (SINR), and the SINR satisfies the following formula:

[0018] Among them, ‖h1‖ 2 is the first received power of the first RS, ‖h2‖ 2 is the second received power of the second RS, ‖h3‖ 2 is the third received power of the third RS, ‖h4‖ 2 is the fourth received power of the fourth RS, σ 2 is the noise power during the first RS reception process.

[0019] In combination with the first aspect, in a possible implementation manner, the method further includes: sending first channel quality indication information to the network device.

[0020] In the above implementation, the terminal device sends the first channel quality indication information to the network device. Since the first channel quality indication information is more accurate, it can improve network scheduling decisions, allocate wireless resources more effectively, improve the throughput and efficiency of the wireless communication network, optimize the reception quality of the user device and the performance of the overall network, and further improve the network service quality and user experience.

[0021] In conjunction with the first aspect, in one possible implementation, the method further includes: receiving a fifth RS from a network device and a first RS retransmitted by the network device. Obtaining a sixth RS and a seventh RS. Here, the sixth RS is a nonlinear combination of the fifth RS and the retransmitted first RS, and the seventh RS is a nonlinear combination of the fifth RS and the retransmitted first RS. Determining second channel quality indication information of the terminal device based on reception parameters of the fifth RS, the sixth RS, the seventh RS, and the retransmitted first RS.

[0022] In the above implementation, when there are multiple interference RSs, the network device can combine each of the multiple interference RSs with the channel RS and send them to the terminal device to determine the amount of nonlinear interference under different combined beams, namely the virtual RS. Furthermore, the terminal device can jointly calculate the channel quality indication information based on the receiving parameters of each group of channel RSs, interference RSs and corresponding virtual RSs. The channel quality indication information calculated in this way is more accurate, which can improve network scheduling decisions, allocate wireless resources more effectively, improve the throughput and efficiency of the wireless communication network, optimize the reception quality of the terminal device and the performance of the overall network, and further improve the network service quality and user experience.

[0023] In conjunction with the first aspect, in one possible implementation, the fifth RS and the retransmitted first RS are transmitted at the same time. That is, the network device needs to transmit the first RS and the fifth RS simultaneously. This generates the sixth RS and the seventh RS for measuring nonlinear interference, thereby making the calculated channel quality indicator information more accurate.

[0024] In combination with the first aspect, in a possible implementation manner, the method further includes: sending second channel quality indication information to the network device.

[0025] In the above implementation, the terminal device sends a second channel quality indication information to the network device. Since the second channel quality indication information is more accurate, it can improve network scheduling decisions, allocate wireless resources more effectively, improve the throughput and efficiency of the wireless communication network, optimize the reception quality of the user device and the performance of the overall network, and further improve the network service quality and user experience.

[0026] With reference to the first aspect, in a possible implementation manner, the channel quality indication information includes one or more of a signal to interference plus noise ratio SINR, a channel quality indicator CQI value, or modulation and coding scheme MCS information.

[0027] In a second aspect, an embodiment of the present application provides a channel quality determination method. The method is applicable to a network device. The method includes: sending a first reference signal (RS) and a second RS to a terminal device. Sending indication information to the terminal device. Here, the indication information is used to instruct the terminal device to determine a third RS and a fourth RS based on an intermodulation distortion (IMD) model, where the third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is a nonlinear combination of the first RS and the second RS. The reception parameters of the first RS, the second RS, the third RS, and the fourth RS are used to determine first channel quality indication information of the terminal device.

[0028] In conjunction with the second aspect, in one possible implementation, the method further includes: sending data corresponding to a third RS and a fourth RS to a terminal device. Here, the third RS is determined based on an IMD model, the first RS, and the second RS, and the fourth RS is determined based on the IMD model, the first RS, and the second RS.

[0029] In combination with the second aspect, in a possible implementation manner, the transmission time of the first RS and the second RS is the same.

[0030] In combination with the second aspect, in a possible implementation manner, the method further includes: receiving the first channel quality indication information from a terminal device.

[0031] In conjunction with the second aspect, in one possible implementation, the method further includes: sending a fifth RS to the terminal device and resending the first RS. Here, the fifth RS and the resent first RS are used to determine a sixth RS and a seventh RS, where the sixth RS is a nonlinear combination of the fifth RS and the resent first RS, and the seventh RS is a nonlinear combination of the fifth RS and the resent first RS. The reception parameters of the fifth RS, the sixth RS, the seventh RS, and the resent first RS are used to determine second channel quality indication information of the terminal device.

[0032] In combination with the second aspect, in a possible implementation manner, the method further includes: receiving second channel quality indication information from the terminal device.

[0033] With reference to the second aspect, in a possible implementation, the fifth RS and the retransmitted first RS are transmitted at the same time.

[0034] In combination with the second aspect, in a possible implementation, the receiving parameter includes receiving power.

[0035] It should be understood that the communication method provided in the first aspect is also applicable to functional components within a terminal device, such as a processor, chip, chip system, circuit, etc. within the terminal device, and this application does not impose specific limitations on this. Similarly, the communication method provided in the second aspect is also applicable to functional components within the corresponding device. To avoid redundancy, this description will not be repeated here.

[0036] In a third aspect, an embodiment of the present application provides a communication device, which may be the terminal device mentioned in the first aspect. The communication device includes modules, units, or means corresponding to the above-mentioned method, which may be implemented by hardware, software, or hardware executing corresponding software implementations. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

[0037] In some possible designs, the communication device includes a transceiver unit and a processing unit. The transceiver unit (also referred to as a transceiver module) is configured to receive a first reference signal RS and a second RS. The processing unit (also referred to as a processing module) is configured to obtain a third RS and a fourth RS. Here, the third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is a nonlinear combination of the first RS and the second RS. The processing unit is further configured to determine first channel quality indication information of the terminal device based on reception parameters of the first RS, the second RS, the third RS, and the fourth RS.

[0038] In combination with the third aspect, in a possible implementation, the transmission time of the first RS and the second RS is the same.

[0039] In combination with the third aspect, in a possible implementation manner, the third RS is determined based on an IMD model, the first RS, and the second RS, and the fourth RS is determined based on the IMD model, the first RS, and the second RS.

[0040] In combination with the third aspect, in a possible implementation, the transceiver unit is further configured to receive data corresponding to the third RS and the fourth RS from the network device.

[0041] In conjunction with the third aspect, in a possible implementation, the processing unit is further configured to process the first RS and the second RS using an IMD model to obtain a third RS. The processing unit is further configured to process the first RS and the second RS using the IMD model to obtain a fourth RS.

[0042] In conjunction with the third aspect, in a possible implementation, the transceiver unit is further configured to receive instruction information from a network device. Here, the instruction information is used to instruct the terminal device to determine the third RS and the fourth RS according to the IMD model.

[0043] In combination with the third aspect, in a possible implementation method, the processing unit is also used to determine the first channel quality information of the terminal device based on the first receiving power of the first RS, the second receiving power of the second RS, the third receiving power of the third RS, the fourth receiving power of the fourth RS, and the noise power in the process of receiving the first RS.

[0044] In conjunction with the third aspect, in a possible implementation, the channel quality indication information includes a signal-to-interference-plus-noise ratio (SINR), and the SINR satisfies the following formula:

[0045] Among them, ‖h1‖ 2 is the first received power of the first RS, ‖h2‖ 2 is the second received power of the second RS, ‖h3‖ 2 is the third received power of the third RS, ‖h4‖ 2 is the fourth received power of the fourth RS, σ 2 is the noise power during the first RS reception process.

[0046] In combination with the third aspect, in a possible implementation manner, the transceiver unit is further configured to send first channel quality indication information to the network device.

[0047] In conjunction with the third aspect, in one possible implementation, the transceiver unit is further configured to receive a fifth RS from a network device and a first RS retransmitted by the network device. The processing unit is further configured to obtain a sixth RS and a seventh RS. Here, the sixth RS is a nonlinear combination of the fifth RS and the retransmitted first RS, and the seventh RS is a nonlinear combination of the fifth RS and the retransmitted first RS. The processing unit is further configured to determine second channel quality indication information of the terminal device based on reception parameters of the fifth RS, the sixth RS, the seventh RS, and the retransmitted first RS.

[0048] With reference to the third aspect, in a possible implementation, the fifth RS and the retransmitted first RS are transmitted at the same time.

[0049] In combination with the third aspect, in a possible implementation manner, the transceiver unit is further configured to send second channel quality indication information to the network device.

[0050] In conjunction with the third aspect, in a possible implementation manner, the channel quality indication information includes one or more of a signal to interference plus noise ratio SINR, a channel quality indicator CQI value, or modulation and coding scheme MCS information.

[0051] In a fourth aspect, an embodiment of the present application provides a communication device, which may be the network device mentioned in the first aspect. The communication device includes modules, units, or means corresponding to the above-mentioned method, which may be implemented by hardware, software, or hardware executing corresponding software implementations. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

[0052] In some possible designs, the communication device includes a transceiver unit and a processing unit. The transceiver unit (also referred to as a transceiver module) is configured to send a first reference signal RS and a second RS. The processing unit (also referred to as a processing module) is configured to generate indication information. Here, the indication information is used to instruct the terminal device to determine a third RS and a fourth RS based on an intermodulation distortion (IMD) model, where the third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is a nonlinear combination of the first RS and the second RS. The reception parameters of the first RS, the second RS, the third RS, and the fourth RS are used to determine first channel quality indication information of the terminal device. The transceiver unit is also configured to send the indication information.

[0053] In conjunction with the fourth aspect, in one possible implementation, the transceiver unit is further configured to send data corresponding to the third RS and the fourth RS to the terminal device. Here, the third RS is determined based on the IMD model, the first RS, and the second RS, and the fourth RS is determined based on the IMD model, the first RS, and the second RS.

[0054] In combination with the fourth aspect, in a possible implementation manner, the transmission time of the first RS and the second RS is the same.

[0055] In combination with the fourth aspect, in a possible implementation manner, the transceiver unit is further configured to receive first channel quality indication information from the terminal device.

[0056] In conjunction with the fourth aspect, in one possible implementation, the transceiver unit is further configured to send a fifth RS to the terminal device and resend the first RS. Here, the fifth RS and the resent first RS are used to determine a sixth RS and a seventh RS, where the sixth RS is a nonlinear combination of the fifth RS and the resent first RS, and the seventh RS is a nonlinear combination of the fifth RS and the resent first RS. The reception parameters of the fifth RS, the sixth RS, the seventh RS, and the resent first RS are used to determine the second channel quality indication information of the terminal device.

[0057] In combination with the fourth aspect, in a possible implementation manner, the transceiver unit is further configured to receive second channel quality indication information from the terminal device.

[0058] With reference to the fourth aspect, in a possible implementation, the fifth RS and the retransmitted first RS are transmitted at the same time.

[0059] In combination with the fourth aspect, in a possible implementation, the receiving parameter includes receiving power.

[0060] In a fifth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, cause the computer to execute any one of the methods in the first aspect or any possible implementation of the first aspect, or to execute any one of the methods in the second aspect or any possible implementation of the second aspect.

[0061] In a sixth aspect, the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed, it executes the method described in the first aspect or any possible implementation of the first aspect, or executes the method described in the second aspect or any possible implementation of the second aspect.

[0062] In a seventh aspect, the present application provides a communication device, at least one processor, and at least one processor configured to execute the method described in any of the above aspects or any possible implementation of any of the above items. The communication device may be the terminal device described in the first aspect, or a device including the terminal device, or a device included in the terminal device, such as a chip; or the communication device may be the network device described in the second aspect, or a device including the network device, or a device included in the network device.

[0063] In combination with the seventh aspect, in a possible implementation, the communication device further includes a memory, which is used to store necessary program instructions and data (ie, computer programs).

[0064] In combination with the seventh aspect, in a possible implementation, the memory may be coupled to the processor, or may be independent of the processor.

[0065] In an eighth aspect, the present application provides a chip system, comprising at least a processor. The processor is configured to execute computer-executable instructions to cause a device equipped with the chip system to perform the method described in the first aspect or any possible implementation of the first aspect; or to perform the method described in the second aspect or any possible implementation of the second aspect.

[0066] In conjunction with the eighth aspect, in a possible implementation, the chip system may further include an interface circuit configured to receive computer execution instructions and transmit the instructions to the processor.

[0067] In a ninth aspect, the present application provides a communication device, comprising: a processor and an interface circuit; the interface circuit is configured to receive signals from other communication devices outside the communication device and transmit them to the processor or to send signals from the processor to other communication devices outside the communication device. The processor is configured to implement the method described in any of the above aspects through a logic circuit or by executing a computer program or instruction. The communication device may be the terminal device described in the first aspect, or a device including the terminal device, or a device included in the terminal device, such as a chip system; or the communication device may be the network device described in the second aspect, or a device including the network device, or a device included in the network device.

[0068] In a tenth aspect, the present application provides a communication system. The communication system includes at least a terminal device and a network device. The terminal device is configured to execute the channel quality determination method provided in the first aspect or any possible implementation of the first aspect, and the network device is configured to execute the channel quality determination method provided in the second aspect or any possible implementation of the second aspect.

[0069] In summary, the communication method provided in this application can calculate more accurate channel quality indication information, thereby improving network scheduling decisions, more effectively allocating wireless resources, improving the throughput and efficiency of wireless communication networks, optimizing the reception quality of terminal devices and the performance of the overall network, and further improving the network's service quality and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] FIG1 is a schematic structural diagram of a communication system provided in an embodiment of the present application;

[0071] FIG2 is a schematic diagram of a network element structure of a communication system provided in an embodiment of the present application;

[0072] FIG3 is a flow chart of a channel quality measurement method provided by an embodiment of the present application;

[0073] FIG4 is a schematic diagram of the structure of a beam reference signal provided in an embodiment of the present application;

[0074] FIG5 is another flow chart of a method for determining channel quality according to an embodiment of the present application;

[0075] FIG6 is another flow chart of a method for determining channel quality according to an embodiment of the present application;

[0076] FIG7 is another flow chart of a method for determining channel quality according to an embodiment of the present application;

[0077] FIG8 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0078] FIG9 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0079] FIG10 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0080] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings provided in the embodiments of the present application.

[0081] In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0082] The technical solutions provided in the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, fifth generation (5G) system or new radio (NR). In addition, it can also be applicable to subsequent evolution systems, such as the sixth generation 6G communication system and even the more advanced seventh generation 7G communication system.

[0083] The following is an introduction to the system architecture used in the embodiments of this application. It should be noted that the system architecture and business scenarios described in this application are intended to more clearly illustrate the technical solutions of this application and do not constitute a limitation on the technical solutions provided by this application. Those skilled in the art will appreciate that, with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided by this application will also be applicable to similar technical problems.

[0084] Please refer to Figure 1, which is a schematic diagram of the structure of a communication system provided by an embodiment of the present application. As shown in Figure 1, the communication system 10 may include network devices and terminal devices. The network devices and terminal devices cooperate with each other to implement the channel quality measurement method provided by the present application. Among them:

[0085] A network device can be a device deployed in a radio access network (RAN) to provide wireless communication functions for terminal devices. For example, the network device can be an evolved node B (eNB), a baseband unit (BBU), an open radio access network (ORAN), a cloud radio access network (CRAN), an access point (AP) in a wireless local area network (WLAN), a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission reception point (TRP). The network device can also be a gNB (next generation node B) in a 5G system, a TRP, a TP, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system. In addition, the network device can also constitute a network node of a gNB or TP, such as a BBU, or a distributed unit (DU). Alternatively, the network device may also be a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), an Internet of Vehicles communication system, or a device that performs network-side functions in other communication systems, and the embodiments of the present application are not limited to this.

[0086] Terminal equipment may also be referred to as user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile terminal, user terminal, terminal, wireless communication device, user agent or user device, etc. Terminal equipment can be a device that provides voice / data connectivity to users, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). The terminal equipment in the network (PLMN), etc., is not limited to this in the embodiments of the present application.

[0087] It should be noted that the communication system 10 may include multiple network devices and one or more terminal devices. The embodiments of the present application do not impose any specific restrictions on the number of network devices and terminal devices. It should be understood that multiple network devices included in the communication system 10 can simultaneously transmit data or control signaling for a terminal device.

[0088] Please refer to Figure 2, which is a schematic diagram of a network element structure of a communication system provided in an embodiment of the present application. As shown in Figure 2, for ease of understanding, the network element structure of the communication system 20 is exemplarily described by taking the communication system 20 including a terminal device 21 and a network device 22 as an example.

[0089] Among them, the terminal device 21 may include a processor 211, a memory 212, and a transceiver 213. The transceiver 213 may include a transmitter 2131, a receiver 2132, and an antenna 2133. The network device 22 may include a processor 221, a memory 222, and a transceiver 223. The transceiver 223 may include a transmitter 2231, a receiver 2232, and an antenna 2233. Optionally, in the embodiment of the present application, the transmitter 2231 and the receiver 2232 in the network device 22 may adopt a HBF architecture design.

[0090] In a specific implementation, the receiver 2132 of the terminal device 21 can be used to receive transmission control information through the antenna 2133, the transmitter 2131 can be used to send transmission feedback information to the network device 22 through the antenna 2133, the processor 211 can be used to analyze, calculate, and perform other processing on the received information, and the memory 212 can be used to store and save transmitted data and control instructions, etc.

[0091] The transmitter 2231 of the network device 22 can be used to send transmission control information to the terminal device 21 via the antenna 2233, the receiver 2232 can be used to receive the transmission feedback information sent by the terminal device 21 via the antenna 2233, the processor 221 can be used to analyze, calculate, and perform other processing on the received information, and the memory 222 can be used to store and save transmitted data and control instructions, etc.

[0092] To facilitate understanding of the present application, some nouns or terms involved in the present application are explained below.

[0093] 1. Hybrid Beamforming

[0094] Hybrid beamforming (HBF) is a signal processing technology used in modern wireless communication systems that combines the features of analog (RF) beamforming and digital beamforming. This technology is mainly used in multi-antenna systems such as millimeter wave communications and multiple-in multiple-out (MIMO) systems, especially in 5G new radio (NR) and future 6G wireless communication networks. In traditional all-digital beamforming systems, each antenna element has an independent RF link and digital signal processor, which allows the all-digital beamforming system to precisely control the signal transmitted by each antenna, thereby maximizing the signal directionality and system capacity. However, this approach encounters implementation challenges in the millimeter wave band. This is because RF components are expensive, power-hungry, and difficult to integrate.

[0095] HBF technology can solve these problems in the following ways:

[0096] (1) Analog beamforming: Using a phased array at the RF level, a specific beam pattern is formed by adjusting the phase of each antenna element in the antenna array. This beam can point in a specific direction or cover a specific area, but analog beamforming has limited flexibility because it cannot provide independent beam shapes for each data stream.

[0097] (2) Digital beamforming: Uses digital signal processing at the baseband level to adjust the beam pattern for each data stream. Digital beamforming provides finer control because it generates independent beams for each data stream.

[0098] HBF combines the advantages of the above two methods. It uses a limited number of RF links (fewer than the number of antenna elements) and connects them to a larger antenna array. Coarse beamforming is performed in the analog domain to reduce the number of RF links and power consumption, and then fine-tuned in the digital domain to achieve better system performance and higher spectral efficiency.

[0099] 2. Intermodulation distortion

[0100] Intermodulation distortion (IMD) is a form of nonlinear distortion that occurs when signals of multiple frequencies pass through a nonlinear system (such as a power amplifier) ​​simultaneously. When two or more signals of different frequencies pass through a nonlinear system simultaneously, the original frequencies interact with each other to produce new frequency components. These new frequency components are the sum frequencies (SFs) and difference frequencies (DFs) of the original signals, as well as higher-order combinations of these sum and difference frequencies. For example, if there are two signals with frequencies f1 and f2, then intermodulation distortion will produce new components with frequencies |mf1±nf2|, where m and n are positive integers. The generation of intermodulation distortion can have a serious impact on wireless communication systems because these unwanted signal components can interfere with other channels in the system.

[0101] The existing method of measuring channel quality indication information by relying on RS can only measure the interference component between beams. For example, the nonlinear interference component generated by the combined beam of the main beam in the fully connected HBF architecture cannot be measured. Therefore, when the network equipment adopts the fully connected HBF architecture, the channel quality indication information measured by the existing solution is not accurate, which makes it impossible for the network equipment to effectively optimize the channel quality. Therefore, the technical problem to be solved by this application is: how to measure more accurate channel quality indication information in the fully connected HBF architecture.

[0102] In combination with the above content, the communication method of the embodiment of the present application is exemplarily introduced below.

[0103] Please refer to Figure 3, which is a flow chart of a channel quality measurement method provided in an embodiment of the present application. This method can be applied to the communication system 10 shown in Figure 1 or the communication system 20 shown in Figure 2. As shown in Figure 3, the channel quality measurement method may include the following steps:

[0104] S301: The network device sends a first RS and a second RS to a terminal device. Correspondingly, the terminal device receives the first RS and the second RS from the network device.

[0105] In some feasible implementations, the network device may configure a first RS and a second RS for the terminal device and send the first RS and the second RS to the terminal device. The terminal device may be located in a first beam direction corresponding to the first RS, and the first beam corresponding to the first RS and the second beam corresponding to the second RS are different in direction.

[0106] It should be noted that the first beam direction may be the direction of the serving beam of the terminal device, and the first RS can be received by the terminal device through the serving beam. The second beam direction may be the direction of the serving beam of other terminal devices other than the above-mentioned terminal device. Here, the second beam can be understood as the non-serving beam of the above-mentioned terminal device, and the terminal device can measure the interference power generated by the other terminal device by measuring the second RS on the non-serving beam.

[0107] Optionally, the first RS may be a channel RS, and the second RS may be an interference measurement RS. The first RS may be understood as a channel RS of a terminal device, which may be used to measure the energy of a valid signal reaching the terminal device. The second RS may be understood as an interference measurement RS of a terminal device, which may be used to measure the energy of an interference signal reaching the terminal device.

[0108] In one possible implementation, when the network device requires the terminal device to provide channel quality indication information, it can configure the time domain resources, frequency domain resources, time domain behavior, quasi-co-location assumption, polarization type or usage type corresponding to the first RS and the second RS for the terminal device.

[0109] Furthermore, the network device may send the first RS and the second RS to the terminal device on corresponding resources. Optionally, the network device may send the first RS and the second RS to the terminal device periodically. The network device may also send the first RS and the second RS at a specific time.

[0110] Optionally, the transmission time of the first RS and the second RS may be the same. In one possible scenario, the time domain resources of the second RS configured by the network device for the terminal device may be the same as part of the time domain resources of the first RS. In other words, the network device may send the first RS and the second RS to the terminal device simultaneously.

[0111] S302: The terminal device obtains a third RS and a fourth RS.

[0112] In some feasible implementations, the terminal device may obtain a third RS corresponding to the first RS and the second RS, and a fourth RS corresponding to the first RS and the second RS.

[0113] The third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is also a corresponding nonlinear combination of the first RS and the second RS. In other words, the third RS and the fourth RS are both nonlinear interference components of the combined beam of the first beam and the second beam.

[0114] Optionally, the third RS may be determined based on the IMD model, the first RS, and the second RS, and the fourth RS may also be determined based on the IMD model, the first RS, and the second RS.

[0115] It should be noted that the third RS and the fourth RS may be two different nonlinear combinations fitted according to the first RS and the second RS through an IMD model. Optionally, the third RS and the fourth RS may also be referred to as virtual RSs. It should be understood that, in actual implementation, there may be many types of nonlinear combinations fitted according to the first RS and the second RS through an IMD model, and the third RS and the fourth RS may be two nonlinear combinations of lower order among these multiple nonlinear combinations. For example, the third RS and the fourth RS may be a third-order nonlinear combination. Among them, the third RS and the fourth RS may be nonlinear interference components corresponding to the combined beam of the first beam corresponding to the first RS and the second beam corresponding to the second RS, and may be used by the terminal device to measure and calculate channel quality indication information.

[0116] In an optional implementation, the network device may first process the first RS and the second RS using an IMD model to obtain a third RS and a fourth RS, and may send data corresponding to the third RS and the fourth RS to the terminal device. It should be noted that in actual implementation, the network device does not need to send the third RS and the fourth RS to the terminal device, but only needs to send the data corresponding to the third RS and the fourth RS, so that the terminal device calculates the channel quality indication information based on this data.

[0117] In the above implementation, the network device can first process the first RS and the second RS through the IMD model to obtain the third RS and the fourth RS, and then send the data corresponding to the third RS and the fourth RS to the terminal device, thereby reducing the data processing amount of the terminal device.

[0118] In yet another optional implementation, after the terminal device receives the first RS and the second RS from the network device, the terminal device may process the first RS and the second RS through an IMD model to obtain a third RS and a fourth RS.

[0119] Optionally, when the terminal device determines the third RS and the fourth RS using the IMD model, before the network device sends the first RS and the second RS to the terminal device, the terminal device may further receive instruction information from the network device and determine, based on the instruction information, that it needs to determine the third RS and the fourth RS using the first RS and the second RS. It should be understood that the instruction information is used to instruct or trigger the terminal device to perform the step of determining the third RS and the fourth RS based on the IMD model.

[0120] For ease of understanding, the third RS and the fourth RS are exemplarily described below in conjunction with FIG4. Please refer to FIG4, which is a schematic diagram of the structure of a beam reference signal provided by an embodiment of the present application. As shown in FIG4, assuming that h HRepresents the channel of the terminal device, and the terminal device can receive information from the first beam. Assume that x1 and x2 represent the data carried by the first beam and the second beam, respectively. Assume that ω1 and ω2 are the weights corresponding to the first beam and the second beam, respectively, and ω3 and ω4 are the weights corresponding to the third beam and the fourth beam, respectively. It should be noted that x1 can be equivalent to the first RS mentioned above, and x2 can be equivalent to the second RS mentioned above. Here, the third beam and the fourth beam can be the combined beams of the first beam and the second beam, that is, the interference beams of the terminal device.

[0121] In specific implementation, according to the IMD model, the signal sent by the network device in the fully connected HBF architecture can be expressed as the following formula (1):

[0122] Among them, c3 and c4 are the parameters of the IMD model. and are all nonlinear combinations corresponding to the first RS and the second RS mentioned above, It can be equivalent to the third RS mentioned above, It can be equivalent to the fourth RS mentioned above.

[0123] S303: The terminal device determines first channel quality indication information of the terminal device according to reception parameters of the first RS, the second RS, the third RS, and the fourth RS.

[0124] In some feasible implementations, the terminal device may determine the first channel quality indication information of the terminal device according to reception parameters of the first RS, the second RS, the third RS, and the fourth RS.

[0125] Optionally, the above-mentioned receiving parameter may be receiving power. It should be understood that this receiving power may be reference signal receiving power (RSRP).

[0126] Optionally, the first channel quality indication information may include one or more of a signal-to-interference-plus-noise ratio (SINR), a channel quality indicator (CQI) value, or modulation and coding scheme (MCS) information.

[0127] In an optional implementation, the terminal device can determine the first channel quality indication information of the terminal device based on the first receiving power of the first RS, the second receiving power of the second RS, the third receiving power of the third RS, the fourth receiving power of the fourth RS, and the noise power in the process of receiving the first RS.

[0128] Specifically, when the channel quality indication information is SINR, the SINR may satisfy the following formula (2):

[0129] Among them, ‖h1‖ 2 is the first received power of the first RS, ‖h2‖ 2 is the second received power of the second RS, ‖h3‖ 2 is the third received power of the third RS, ‖h4‖ 2 is the fourth received power of the fourth RS, σ 2 is the noise power during the first RS reception process. It should be noted that ‖h‖ 2 represents the norm of h.

[0130] That is, the terminal device can calculate the SINR based on the above formula (2) and the values ​​of the above first receiving power, second receiving power, third receiving power, fourth receiving power, and noise power, and determine it as the above first channel quality indication information.

[0131] For ease of understanding, please continue to refer to Figure 4 for an exemplary illustration of the received power of the first RS, second RS, third RS, and fourth RS. From the signal sent by the above network device under the fully connected HBF architecture, it can be seen that the signal received by the terminal device can be expressed as the following formula (3):

[0132] Where h1 = h H ω1 represents the equivalent channel of the first RS, h2=h H ω2 represents the equivalent channel of the second RS, h3=c3h H ω3 represents the equivalent channel of the third RS, h4=c4h H ω4 represents the equivalent channel of the fourth RS, and n represents noise.

[0133] Furthermore, the terminal device can 2 Determine the first received power of the first RS and set ‖h2‖ 2 Determine the second received power of the second RS and set ‖h3‖ 2 Determine the third received power of the third RS and set ‖h4‖ 2 The fourth received power of the fourth RS is determined.

[0134] In a feasible implementation, after the terminal device determines the SINR based on the above-mentioned first receiving power, second receiving power, third receiving power, fourth receiving power and noise power, the terminal device can quantize the SINR to obtain a CQI value, and determine the quantized CQI value as the above-mentioned first channel quality indication information.

[0135] In another feasible implementation, after the terminal device determines the SINR based on the above-mentioned first received power, second received power, third received power, fourth received power and noise power, the terminal device can determine its corresponding modulation level information, such as MCS information, based on the SINR, and determine the MCS information as the above-mentioned first channel quality indication information.

[0136] In an embodiment of the present application, the network device can determine the third RS and the fourth RS that can be used to measure nonlinear interference based on the first RS and the second RS. Further, the terminal device can jointly calculate the channel quality indication information based on the reception parameters corresponding to the first RS, the second RS, the third RS, and the fourth RS, that is, the channel RS, the interference RS, and the virtual RS. In this way, the terminal device can calculate more accurate channel quality indication information based on the measurement results of linear interference and nonlinear interference. Therefore, the method provided by the present application can solve the problem in the prior art that the nonlinear interference component generated by the combined beam of the main beam in the fully connected HBF architecture cannot be measured, and the calculated channel quality indication information is more accurate.

[0137] In some feasible implementations, please refer to Figure 5, which is another flow chart of a channel quality determination method provided in an embodiment of the present application. As shown in Figure 5, the channel quality determination method may further include the following steps:

[0138] S304: The terminal device sends first channel quality indication information to the network device. Correspondingly, the network device receives the first channel quality indication information from the terminal device.

[0139] In some feasible implementations, after determining the first channel quality indication information, the terminal device may send the first channel quality indication information to the network device.

[0140] In one feasible implementation, when the first channel quality indicator information is a CQI value, the terminal device may report the CQI value to the network device via a physical uplink control channel (PUCCH). Since the CQI value is a quantitative indicator that reflects the reception condition of the terminal device, after the network device receives the CQI value, the network device may adjust the downlink MCS to optimize the data transmission rate.

[0141] In the above implementation, the network device can receive the first channel quality indication information from the terminal device. Since the first channel quality indication information is more accurate, it can improve network scheduling decisions, allocate wireless resources more effectively, improve the throughput and efficiency of the wireless communication network, optimize the reception quality of the user device and the performance of the overall network, and further improve the network service quality and user experience.

[0142] In some feasible implementations, please refer to Figure 6, which is another flow chart of a channel quality determination method provided in an embodiment of the present application. As shown in Figure 6, the channel quality determination method may further include the following steps:

[0143] S305: The network device sends the fifth RS to the terminal device and resends the first RS. Correspondingly, the terminal device receives the fifth RS from the network device and the first RS resent by the network device.

[0144] In some feasible implementations, the network device may configure a fifth RS for the terminal device, send the fifth RS to the terminal device, and resend the first RS. The first beam corresponding to the resent first RS and the third beam corresponding to the fifth RS have different directions, and the third beam corresponding to the fifth RS and the second beam corresponding to the second RS also have different directions.

[0145] It should be noted that the fifth beam direction may be the direction of the service beam of other terminal devices other than the above-mentioned terminal device. Here, the fifth beam is the non-service beam of the above-mentioned terminal device, and the above-mentioned terminal device can measure the interference power generated by the other terminal device by measuring the fifth RS on the non-service beam. It should be understood that the terminal device served by the fifth beam should be different from the terminal device served by the second beam, and the orientations of the two terminal devices relative to the network device are also different.

[0146] It should be noted that the fifth RS may be a measurement RS for measuring channel quality indication information. Optionally, the fifth RS may be an interference RS. The first RS sent again may be understood as a channel RS of a terminal device, which is used to measure the energy of a valid signal reaching the terminal device. The fifth RS may be understood as an interference measurement RS of a terminal device, which may be used to measure the energy of an interference signal reaching the terminal device.

[0147] Optionally, the fifth RS and the retransmitted first RS may be transmitted at the same time. In one possible scenario, the time domain resources of the fifth RS configured by the network device for the terminal device may be the same as part of the time domain resources of the first RS. In other words, the network device may send the fifth RS and the first RS to the terminal device simultaneously.

[0148] It should be understood that the time domain resources of the fifth RS configured by the network device for the terminal device should be different from the time domain resources of the second RS mentioned above. That is, the transmission time of the fifth RS and the retransmitted first RS here is different from the transmission time of the first RS and the second RS mentioned above. Exemplarily, the network device may simultaneously transmit the first RS and the second RS at time t1, and simultaneously transmit the first RS and the fifth RS at time t2. Optionally, time t1 may be before time t2, or may be later than time t2, and this application does not impose any specific restrictions on this.

[0149] S306: The terminal device obtains the sixth RS and the seventh RS.

[0150] In some feasible implementations, the terminal device may obtain the fifth RS and the sixth RS corresponding to the retransmitted first RS, and the fifth RS and the seventh RS corresponding to the retransmitted first RS.

[0151] The sixth RS is a nonlinear combination of the fifth RS and the retransmitted first RS, and the seventh RS is a nonlinear combination of the fifth RS and the retransmitted first RS. Optionally, the sixth RS and the seventh RS may also be referred to as virtual RSs.

[0152] It should be understood that the first RS sent again here is the aforementioned first RS.

[0153] It should be noted that the specific process of the terminal device acquiring the sixth RS and the seventh RS here is similar to the process of the terminal device acquiring the third RS and the seventh RS described above, and will not be repeated here.

[0154] S307: The terminal device determines second channel quality indication information of the terminal device according to the reception parameters of the fifth RS, the sixth RS, the seventh RS, and the resent first RS.

[0155] In some feasible implementations, the terminal device may determine the second channel quality indication information of the terminal device based on the reception parameters of the fifth RS, the sixth RS, the seventh RS, and the retransmitted first RS.

[0156] Optionally, the second channel quality indication information may include one or more of SINR, CQI value or MCS information.

[0157] It should be noted that the specific process of the terminal device determining the second channel quality indication information is similar to the process described above in which the terminal device determines the first channel quality indication information based on the receiving parameters of the first RS, second RS, third RS and fourth RS, and will not be repeated here.

[0158] In the above implementation, when there are multiple interference RSs, the network device can combine each of the multiple interference RSs with the channel RS and send them to the terminal device to determine the amount of nonlinear interference under different combination beams, namely the virtual RS. Furthermore, the terminal device can jointly calculate the channel quality indication information based on the receiving parameters of each group of channel RSs, interference RSs and corresponding virtual RSs. In this way, the terminal device can calculate more accurate channel quality indication information based on the measurement results of linear interference and nonlinear interference.

[0159] In some feasible implementations, please refer to Figure 7, which is another flow chart of a channel quality determination method provided in an embodiment of the present application. As shown in Figure 7, the channel quality determination method may further include the following steps:

[0160] S308: The terminal device sends the second channel quality indication information to the network device. Correspondingly, the network device receives the second channel quality indication information from the terminal device.

[0161] In some feasible implementations, after the terminal device determines the second channel quality indication information, the terminal device may send the second channel quality indication information to the network device.

[0162] It should be noted that the above description describes the case where there are two interference measurement RSs, namely the second RS and the fifth RS. In actual implementation, there may be three or more interference RSs. The network device may combine each interference RS with the channel RS and send it to the terminal device, so that the terminal device can determine the channel quality indication information based on the channel RS, the interference RS, and the corresponding virtual RS. The specific process can be found in the relevant description above and will not be repeated here.

[0163] That is, when there are N interfering RSs, where N is a positive integer greater than or equal to 2. The network device may combine each of the N interfering RSs with a channel RS and send them to the terminal device separately. Furthermore, the terminal device may determine N channel quality indication information based on each group of channel RSs, interference RSs, and corresponding virtual RSs and send them to the network device. Specifically, after receiving a group of interfering RSs and channel RSs, the terminal device may obtain a corresponding virtual RS based on the interfering RSs and the channel RS, and may further determine the channel quality indication information corresponding to the group of interfering RSs, channel RSs, and virtual RSs.

[0164] In an optional implementation, the terminal device may send the N channel quality indication information to the network device in the order in which the set of channel RSs and interference RSs are received from the network device. That is, upon determining a piece of channel quality indication information, the terminal device may send the channel quality indication information to the network device. In other words, the order in which the terminal device sends the N channel quality indication information to the network device may correspond one-to-one to the order in which the network device sends the combination of the channel RS and each of the N interference RSs to the terminal device.

[0165] Specifically, when the network device determines the order in which the channel RS and each of the N interference RSs are sent in combination, the order of the N channel quality indication information received by the network device corresponds one-to-one, and then the network device can determine the correspondence between each of the N channel quality indication information and each of the above-mentioned N interference RSs.

[0166] Optionally, when the terminal device determines any one of the N channel quality indication information and sends it to the network device, it may also send identification information to the terminal device, where the identification information may be used to indicate the interference RS corresponding to the any one of the channel quality indication information.

[0167] In another feasible implementation, the terminal device may also send the N channel quality indication information together to the network device, and the embodiment of the present application does not impose any specific restrictions on this.

[0168] It should be noted that the terminal device may sort the N channel quality indication information according to the order determined based on the channel RS, the interference RS, and the corresponding virtual RS. In other words, the order in which the N channel quality indication information is arranged corresponds to the order in which the network device combines the channel RS with each of the N interference RSs and sends them to the terminal device. Thus, the network device can determine the correspondence between each of the N received channel quality indication information and each of the N interference RSs.

[0169] In the above implementation, the network device can receive the second channel quality indication information from the terminal device. Since the second channel quality indication information is more accurate, it can improve network scheduling decisions, allocate wireless resources more effectively, improve the throughput and efficiency of the wireless communication network, optimize the reception quality of the user device and the performance of the overall network, and further improve the network service quality and user experience.

[0170] The communication method provided in the embodiments of the present application is described in detail above with reference to Figures 3 to 7 . The communication device provided in the embodiments of the present application will be described in detail below with reference to Figures 8 and 9 . It should be understood that the description of the embodiment of the communication device corresponds to the description of the embodiment of the communication method. Therefore, for portions not described in detail, reference can be made to the method embodiment described above.

[0171] Please refer to Figure 8, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 8, the communication device 80 may include a transceiver unit 81 and a processing unit 82. Here, the transceiver unit 81 may also be referred to as a transceiver module, and the processing unit 82 may also be referred to as a processing module.

[0172] In some feasible implementations, the communication device 80 may correspond to the terminal device described above, or a component configured in the terminal device (such as a circuit, chip, or chip system). The communication device 80 may include modules, units, or means corresponding to the methods of the above embodiments. The modules, units, or means may be implemented by hardware, software, or by hardware executing corresponding software implementations. The software or hardware includes one or more modules or units corresponding to the above functions.

[0173] In a specific implementation, the transceiver unit 81 is configured to receive a first reference signal (RS) and a second RS. The processing unit 82 is configured to obtain a third RS and a fourth RS, where the third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is a nonlinear combination of the first RS and the second RS. The processing unit 82 is configured to determine first channel quality indicator information of the terminal device based on reception parameters of the first RS, the second RS, the third RS, and the fourth RS.

[0174] In a possible implementation, the transmission time of the first RS and the second RS is the same.

[0175] In a possible implementation, the third RS is determined based on the IMD model, the first RS, and the second RS; and the fourth RS is determined based on the IMD model, the first RS, and the second RS.

[0176] In a possible implementation, the transceiver unit 81 is further configured to receive data corresponding to the third RS and the fourth RS from the network device.

[0177] In a possible implementation, the processing unit 82 is further configured to process the first RS and the second RS using an IMD model to obtain a third RS. The processing unit 82 is further configured to process the first RS and the second RS using an IMD model to obtain a fourth RS.

[0178] In a possible implementation, the transceiver unit 81 is further configured to receive indication information from a network device, wherein the indication information is used to instruct the terminal device to determine the third RS and the fourth RS according to the IMD model.

[0179] In one possible implementation, the processing unit 82 is further used to determine the first channel quality information of the terminal device based on the first receiving power of the first RS, the second receiving power of the second RS, the third receiving power of the third RS, the fourth receiving power of the fourth RS, and the noise power in the process of receiving the first RS.

[0180] In a possible implementation, the channel quality indication information includes a signal-to-interference-plus-noise ratio (SINR), and the SINR satisfies the following formula:

[0181] Among them, ‖h1‖ 2 is the first received power, ‖h2‖ 2 is the second received power, ‖h3‖ 2 is the third received power, ‖h4‖ 2 is the fourth received power, σ 2 is the noise power.

[0182] In a possible implementation, the transceiver unit 81 is further configured to send first channel quality indication information to the network device.

[0183] In one possible implementation, the transceiver unit 81 is further configured to receive a fifth RS from the network device and a first RS retransmitted by the network device. The processing unit 82 is further configured to obtain a sixth RS and a seventh RS, where the sixth RS is a nonlinear combination of the fifth RS and the retransmitted first RS, and the seventh RS is a nonlinear combination of the fifth RS and the retransmitted first RS. The processing unit 82 is further configured to determine second channel quality indicator information of the terminal device based on reception parameters of the fifth RS, the sixth RS, the seventh RS, and the retransmitted first RS.

[0184] In a possible implementation, the fifth RS and the retransmitted first RS are transmitted at the same time.

[0185] In a possible implementation, the transceiver unit 81 is further configured to send second channel quality indication information to the network device.

[0186] In a possible implementation manner, the channel quality indication information includes one or more of a signal to interference plus noise ratio SINR, a channel quality indicator CQI value, or modulation and coding scheme MCS information.

[0187] In some feasible implementations, the communication device 80 may correspond to the aforementioned network device, or a component (such as a circuit, chip, or chip system) configured in the network device. The communication device 80 may include modules, units, or means corresponding to the methods of the aforementioned embodiments. The modules, units, or means may be implemented by hardware, software, or by hardware executing corresponding software implementations. The software or hardware includes one or more modules or units corresponding to the aforementioned functions.

[0188] In a specific implementation, the transceiver unit 81 is configured to transmit a first reference signal (RS) and a second reference signal (RS). The processing unit 82 is configured to generate indication information, wherein the indication information is configured to instruct the terminal device to determine a third reference signal (RS) and a fourth reference signal (RS) based on an intermodulation distortion (IMD) model. The third reference signal (RS) is a nonlinear combination of the first reference signal (RS) and the second reference signal (RS). The fourth reference signal (RS) is a nonlinear combination of the first reference signal (RS) and the second reference signal (RS). The reception parameters of the first reference signal (RS), the second reference signal (RS), the third reference signal (RS), and the fourth reference signal (RS) are used to determine first channel quality indication information of the terminal device. The transceiver unit 81 is also configured to transmit the indication information.

[0189] In one possible implementation, the transceiver unit 81 is further used to send data corresponding to the third RS and the fourth RS to the terminal device, wherein the third RS is determined based on the IMD model, the first RS and the second RS, and the fourth RS is determined based on the IMD model, the first RS and the second RS.

[0190] In a possible implementation, the transmission time of the first RS and the second RS is the same.

[0191] In a possible implementation, the transceiver unit 81 is further configured to receive first channel quality indication information from the terminal device.

[0192] In one possible implementation, the transceiver unit 81 is also used to send the fifth RS to the terminal device and resend the first RS, wherein the fifth RS and the resent first RS are used to determine the sixth RS and the seventh RS, the sixth RS is a nonlinear combination of the fifth RS and the resent first RS, the seventh RS is a nonlinear combination of the fifth RS and the resent first RS, and the receiving parameters of the fifth RS, the sixth RS, the seventh RS and the resent first RS are used to determine the second channel quality indication information of the terminal device.

[0193] In a possible implementation, the transceiver unit 81 is further configured to receive second channel quality indication information from the terminal device.

[0194] In a possible implementation, the fifth RS and the retransmitted first RS are transmitted at the same time.

[0195] In a possible implementation, the receiving parameter includes receiving power.

[0196] Please refer to Figure 9, which is a schematic diagram of the structure of another communication device provided by this application. This communication device 90 can be used to implement the operations performed by the terminal device or network device in the above embodiments. Alternatively, this communication device 90 can be the terminal device or network device described above. This communication device 90 includes: a processor 91, a memory 92, and a bus system 93. Optionally, the memory 92 can be coupled to the processor 91, or it can be independent of the processor 91.

[0197] The memory 92 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM). The memory 92 is used to store relevant instructions and data. The memory 92 stores the following elements, executable modules, or data structures, or subsets or extensions thereof:

[0198] Operation instructions: include various operation instructions, used to implement various operations.

[0199] Operating system: includes various system programs used to implement various basic services and process hardware-based tasks.

[0200] FIG9 shows only one memory. Of course, the number of memories may also be multiple as needed.

[0201] In a possible implementation, the communication device 90 may only include the processor 91 and the bus system 93 , that is, not including the memory 92 .

[0202] The communication device 90 may further include a transceiver 94. The transceiver 94 may be a communication module or a transceiver circuit. In the embodiments of the present application, the transceiver 94 is used to perform the information transmission and reception operations described in the above embodiments.

[0203] Processor 91 can be a controller, a CPU, a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. Processor 91 can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0204] In a specific application, the various components of the communication device 90 are coupled together via a bus system 93. In addition to a data bus, bus system 93 may also include a power bus, a control bus, and a status signal bus. However, for clarity, in FIG9 , various buses are labeled as bus system 93. For ease of illustration, FIG9 is merely a schematic representation.

[0205] In a specific implementation, the communication device 90 may execute the steps of the method performed by the terminal device or network device in the above-mentioned embodiment. Specifically, when the communication device 90 is used to implement the various steps performed by the terminal device or network device in the channel quality determination method provided in the embodiment, the processor 91 may implement the functions of the above-mentioned processing unit 82, and the transceiver 94 may implement the functions of the above-mentioned transceiver unit 81.

[0206] It should be noted that in practical applications, the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-mentioned method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-mentioned processor can be a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-mentioned method.

[0207] It is understood that the memory in the embodiment of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Wherein, the non-volatile memory can be a ROM, a programmable read-only memory (programmable ROM, PROM), EPROM, an electrically erasable programmable read-only memory (electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a RAM, which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) and direct rambus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory described in the embodiment of the present application is intended to include but is not limited to these and any other suitable types of memories.

[0208] The present application also provides a computer-readable medium having a computer program stored thereon. When the computer program is executed by a computer, the method steps performed by the terminal device or the network device in the above embodiment are implemented.

[0209] The present application also provides a computer program product, which, when executed by a computer, implements the method steps performed by the terminal device or the network device in the above embodiment.

[0210] The present application also provides a chip, comprising at least a processor, wherein the processor is configured to execute computer-executable instructions so that a device equipped with the chip implements the method steps executed by the terminal device or the network device in the above embodiment.

[0211] Optionally, the chip may further include an interface circuit for receiving computer execution instructions and transmitting the instructions to the processor.

[0212] The present application also provides a chip system, which includes a processor for supporting a device in which the chip system is installed to implement the method steps performed by the terminal device or network device in the above embodiment, such as generating or processing the data and / or information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the data sending device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0213] Please refer to Figure 10, which is a schematic diagram of the structure of another communication device provided in an embodiment of the present application. The communication device 100 may include a processor 101 and an interface circuit 102. The interface circuit 102 may be configured to receive signals from other communication devices outside the communication device 100 and transmit them to the processor, or to transmit signals from the processor to other communication devices outside the communication device 100. The processor 101 may be configured to implement the channel quality determination method described in the above embodiments through logic circuits or by executing computer programs or instructions.

[0214] In some possible designs, the communication device 100 may be the terminal device described above, or a device including the terminal device described above, or a device included in the terminal device described above, such as a chip system. The communication device 100 may also be the network device described above, or a device of the network device described above, or a device included in the network device described above.

[0215] The present application also provides a communication system. The communication system includes at least the terminal device or network device described above. The terminal device and the network device work together to implement the channel quality determination method described in the above embodiment.

[0216] In the above method embodiments, all or part of the methods can be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the methods can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD), or a semiconductor medium (e.g., a solid state disk (SSD)).

[0217] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0218] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

[0219] The above description is only a preferred embodiment of the technical solution of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims

1. A method for determining channel quality, characterized in that: The method comprises: receiving a first reference signal RS and a second RS; Obtain a third RS and a fourth RS, wherein the third RS is a nonlinear combination of the first RS and the second RS, and the fourth RS is a nonlinear combination of the first RS and the second RS; First channel quality indication information of the terminal device is determined according to the reception parameters of the first RS, the second RS, the third RS and the fourth RS.

2. The method according to claim 1, characterized in that The transmission time of the first RS and the second RS is the same.

3. The method according to claim 1 or 2, characterized in that The third RS is determined based on an intermodulation distortion (IMD) model, the first RS, and the second RS. The fourth RS is determined based on the IMD model, the first RS, and the second RS.

4. The method according to claim 3, characterized in that The third RS is obtained by the network device processing the first RS and the second RS through the IMD model, and the fourth RS is obtained by the network device processing the first RS and the second RS through the IMD model. The obtaining of the third RS and the fourth RS includes: Receive data corresponding to the third RS and the fourth RS from the network device.

5. The method according to claim 3, characterized in that The obtaining of the third RS and the fourth RS includes: Processing the first RS and the second RS through the IMD model to obtain the third RS; The first RS and the second RS are processed by the IMD model to obtain the fourth RS.

6. The method according to claim 5, characterized in that The method further comprises: Receive indication information from the network device, wherein the indication information is used to instruct the terminal device to determine the third RS and the fourth RS according to the IMD model.

7. The method according to any one of claims 1 to 6, characterized in that The determining first channel quality information of the terminal device according to the reception parameters of the first RS, the second RS, the third RS, and the fourth RS includes: The first channel quality information of the terminal device is determined based on the first receiving power of the first RS, the second receiving power of the second RS, the third receiving power of the third RS, the fourth receiving power of the fourth RS, and the noise power in the process of receiving the first RS.

8. The method according to claim 7, characterized in that The channel quality indication information includes a signal-to-interference-plus-noise ratio (SINR), and the SINR satisfies the following formula: Among them, ||h1|| 2 is the first received power, ||h2|| 2 is the second received power, ||h3|| 2 is the third received power, ||h4|| 2 is the fourth received power, σ 2 is the noise power.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: receiving a fifth RS from the network device and the first RS resent by the network device; Acquire a sixth RS and a seventh RS, wherein the sixth RS is a nonlinear combination of the fifth RS and the resent first RS, and the seventh RS is a nonlinear combination of the fifth RS and the resent first RS; The second channel quality indication information of the terminal device is determined according to the reception parameters of the fifth RS, the sixth RS, the seventh RS and the first RS sent again.

10. The method according to claim 9, characterized in that The fifth RS and the retransmitted first RS are transmitted at the same time.

11. The method according to any one of claims 1 to 10, characterized in that The channel quality indication information includes one or more of a signal to interference plus noise ratio (SINR), a channel quality indicator (CQI) value, or modulation and coding scheme (MCS) information.

12. A method for determining channel quality, characterized in that: The method comprises: Sending a first reference signal RS and a second RS; Send indication information, wherein the indication information is used to instruct the terminal device to determine a third RS and a fourth RS according to an intermodulation distortion IMD model, the third RS is a nonlinear combination of the first RS and the second RS, the fourth RS is a nonlinear combination of the first RS and the second RS, and the receiving parameters of the first RS, the second RS, the third RS and the fourth RS are used to determine the first channel quality indication information of the terminal device.

13. The method according to claim 12, characterized in that The method further comprises: Data corresponding to the third RS and the fourth RS are sent to the terminal device, wherein the third RS is determined based on the IMD model, the first RS and the second RS, and the fourth RS is determined based on the IMD model, the first RS and the second RS.

14. The method according to claim 12 or 13, characterized in that The transmission time of the first RS and the second RS is the same.

15. The method according to any one of claims 12 to 14, characterized in that: The method further comprises: A fifth RS is sent to the terminal device and the first RS is sent again, wherein the fifth RS and the first RS sent again are used to determine the sixth RS and the seventh RS, the sixth RS is a nonlinear combination of the fifth RS and the first RS sent again, and the seventh RS is a nonlinear combination of the fifth RS and the first RS sent again, and the reception parameters of the fifth RS, the sixth RS, the seventh RS and the first RS sent again are used to determine the second channel quality indication information of the terminal device.

16. The method according to claim 15, characterized in that The fifth RS and the retransmitted first RS are transmitted at the same time.

17. A communication device, characterized in that: The communication device includes: a unit for implementing the channel quality determination method according to any one of claims 1 to 11 or claims 12 to 16.

18. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed, the channel quality determination method according to any one of claims 1 to 11 or the channel quality determination method according to any one of claims 12 to 16 is implemented.

19. A chip system, characterized in that: Including processor; The processor is configured to execute computer-executable instructions so that a device equipped with the chip system executes the channel quality determination method according to any one of claims 1 to 11, or the channel quality determination method according to any one of claims 11 to 16.

20. The chip system according to claim 19, characterized in that: The chip system further includes an interface circuit, which is used to receive the computer execution instruction and transmit it to the processor.

21. A computer program product, characterized in that The computer program product is used by a computer to execute the channel quality determination method according to any one of claims 1 to 11, or the channel quality determination method according to any one of claims 12 to 16.

22. A communication device, characterized in that: The device comprises at least one processor configured to execute a computer program stored in a memory, so that the communication device performs the channel quality determination method according to any one of claims 1 to 11, or the channel quality determination method according to any one of claims 12 to 16.

Images