CN113949471A

CN113949471A - Measurement feedback method and device

Info

Publication number: CN113949471A
Application number: CN202010683214.9A
Authority: CN
Inventors: 王晓娜; 管鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2022-01-18
Also published as: WO2022012609A1

Abstract

The application provides a measurement feedback method and a device, wherein a terminal device feeds back a signal-to-noise ratio margin adopting a specific order modulation coding mode to a network device, the network device can additionally consider the anti-interference capacity brought by the signal-to-noise ratio margin, increase the number of layers of a cell configuration pair user, or better match the real channel capacity of the terminal device when deciding the actual modulation coding mode of user downlink data transmission, thereby improving the system capacity. In addition, aiming at a multi-user pairing scene, the terminal equipment can feed back a modulation and coding mode adopted by the downlink data transmission which suggests the terminal equipment to participate in the multi-user pairing, and guide the base station side to select a more proper modulation and coding mode to transmit the downlink data, so that the system capacity is improved.

Description

Measurement feedback method and device

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a measurement feedback method and apparatus.

Background

In the current mobile communication system (e.g., a fifth generation mobile communication system, 5G), a network device needs to acquire channel-state information (CSI) between a terminal device and the network device, so as to perform resource scheduling for uplink or downlink data transmission according to the CSI. In the current CSI measurement and feedback mechanism, a terminal device may report an MCS supported by the terminal device to a network device through a channel-quality indicator (CQI) quantization value, and the network device adjusts the MCS reported by the terminal device through the CQI quantization according to channel time varying characteristics introduced between a measurement time and a scheduling time, pairing interference introduced by multiple users, differences between a user CSI measurement weighting vector and a data transmission weighting vector, and other factors, so as to determine a final MCS used for user-level data transmission.

However, under the current CSI measurement and feedback mechanism, a certain error exists between the channel quality represented by the MCS reported by the terminal device and the actual channel quality, which results in that the accuracy of the channel quality predicted by the network device based on the MCS reported by the terminal device is limited.

Disclosure of Invention

The application provides a measurement feedback method and a measurement feedback device, which are used for optimizing a channel measurement and feedback mechanism so as to improve the channel quality precision predicted by network equipment.

In a first aspect, the present application provides a measurement feedback method, which may be performed by a terminal device or a component of the terminal device (e.g., a chip, a processor, and/or a transceiver, etc.).

According to the method, the terminal device may receive a Reference Signal (RS) resource configuration from the network device. The RS configuration may be used for the terminal device to perform RS resource channel measurement (or called channel measurement, pilot signal measurement, and the terminal device may obtain the channel measurement result through the channel measurement). The terminal device may determine a CQI quantization value according to the RS resource channel measurement, or the terminal device may determine the CQI quantization value according to the measurement result of the RS resource channel measurement, where the CQI quantization value may include first information, and the first information may represent a signal-to-noise ratio margin of a specific order MCS for the terminal device to perform data transmission (or the first information may represent a signal-to-noise ratio margin of a specific order MCS for the terminal device to perform downlink data transmission), and/or represent an MCS proposed by the terminal device to perform multi-user pairing for data transmission (or represent an MCS proposed by the terminal device to participate in multi-user pairing for downlink data transmission). The terminal device may send the CQI quantization value to the network device.

By adopting the method, the channel measurement and feedback mechanism can be optimized, and the channel quality precision predicted by the network equipment is improved.

It should be understood that multi-user in this application refers to multiple terminal devices. And the terminal equipment performs multi-user pairing transmission, including the participation of the terminal equipment in the multi-user pairing transmission.

In one possible design, when the first information is used to represent the snr margin of a specific order MCS for downlink data transmission of the terminal device, the terminal device may obtain a downlink transmission snr according to RS resource channel measurement, determine the snr margin according to the downlink transmission snr, and determine the first information according to the snr margin, where the snr margin is a difference between the downlink transmission snr and the snr required for the downlink transmission with the specific order MCS. The downlink transmission signal-to-noise ratio is obtained through RS resource channel measurement.

Or, the terminal device may determine the snr margin according to a measurement result of RS resource channel measurement, where the measurement result may include a downlink transmission snr, and the terminal device may determine the snr margin according to the downlink transmission snr and determine the first information according to the snr margin, where the snr margin is a difference between the downlink transmission snr and an snr required by the downlink transmission with the specific MCS.

With the design, the indication of the signal-to-noise ratio margin can be realized through the first information to optimize the CSI feedback mechanism.

In one possible design, the terminal device may determine the first information according to the snr margin through a set algorithm.

Specifically, the terminal device may determine an MCS index corresponding to a margin interval to which the snr margin belongs as the first information, or quantize the snr margin as the first information, or determine a setting value corresponding to the margin interval to which the snr margin belongs as the first information, so as to implement flexible indication of the snr margin. By adopting the design, the flexibility of CQI quantized value feedback can be improved.

In one possible design, the specific-order MCS is a highest-order MCS supported by the terminal device, or the specific-order MCS is preset, or an MCS proposed for downlink data transmission by the terminal device (or referred to as an MCS proposed for downlink data transmission by the terminal device) is provided. The specific MCS may be set by protocol definition or pre-configuration.

In a possible design, when the first information is used to characterize an MCS that is proposed by the terminal device for data transmission of the multi-user pairing, the terminal device may determine, according to a measurement result of RS resource channel measurement performed by RS resource configuration, a signal-to-noise ratio of the terminal device for downlink data transmission of the multi-user pairing, and determine the first information according to the signal-to-noise ratio. By adopting the method, the terminal equipment can be supported to determine the signal-to-noise ratio of the multi-user paired downlink data transmission, and the signal-to-noise ratio is used for determining the CQI quantized value to optimize the CSI feedback mechanism.

In one possible design, the terminal device may determine the transmit power of the downlink data in the multi-user pairing (or referred to as the transmit power of the downlink data transmission in the multi-user pairing performed by the terminal device), and determine the signal-to-noise ratio according to the transmit power, or, the terminal device may determine the signal-to-noise ratio of the downlink data transmission in the multi-user pairing performed by the terminal device according to the transmit power of the downlink data in the multi-user pairing. Wherein the transmission power of the multi-user paired downlink data is

P is the total transmission power of the network equipment, M is the number of ports contained in the interference pilot frequency resource of the paired users, M is an integer and is more than or equal to 0, and RI is the rank used for downlink data transmission determined by the terminal equipment according to RS resource channel measurement. Wherein, M ═ 0 represents Single User (SU) transmission, and M > 0 represents MU transmission.

For example, the transmission power of the downlink data of the multi-user pair may be determined according to the RS resource configuration.

In one possible design, the terminal device may determine the first information according to the signal-to-noise ratio value through a set algorithm.

Specifically, the terminal device may determine an MCS index corresponding to the snr interval to which the snr value belongs as the first information, or quantize the snr value to the first information, or determine a setting value corresponding to the snr interval to which the snr value belongs as the first information. By adopting the design, the flexibility of CQI quantized value feedback can be improved.

In a second aspect, embodiments of the present application provide a communication apparatus, which may be used to perform the process performed by the terminal device in the first aspect or any possible design of the first aspect. The communication device may implement the functions of the above methods in the form of software modules.

When formed of software modules, the communication device may include a communication module and a processing module coupled to each other, where the communication module may be used to support the communication device for communication, and the processing module may be used to perform processing operations on the communication device, such as generating data, information, or messages to be transmitted or processing received signals to obtain data, information, or messages.

Specifically, in the communication apparatus, the communication module may be configured to receive an RS resource configuration from a network device. The processing module can be configured to perform RS resource channel measurements according to the RS configuration. The processing module may further determine a CQI quantization value according to the RS resource channel measurement, where the CQI quantization value may include first information, and the first information may represent a signal-to-noise ratio margin for downlink data transmission of the terminal device with a specific MCS, and/or represent an MCS for downlink data transmission of a proposed terminal device to participate in the multi-user pairing. The communication module may send the CQI quantization value to the network device.

In a possible design, when the first information is used to represent that the downlink data transmission of the terminal equipment adopts the signal-to-noise ratio margin of the MCS of a specific order, the processing module may obtain the downlink transmission signal-to-noise ratio according to the measurement result of the RS resource channel measurement, determine the signal-to-noise ratio margin according to the downlink transmission signal-to-noise ratio, and determine the first information according to the signal-to-noise ratio margin. The signal-to-noise ratio margin is the difference between the signal-to-noise ratio of downlink transmission and the signal-to-noise ratio required by downlink transmission adopting a specific-order MCS.

In one possible design, the processing module may determine the first information according to the snr margin through a set algorithm.

Specifically, the processing module may determine, as the first information, an MCS index corresponding to a margin interval to which the signal-to-noise ratio margin belongs, or quantize, as the first information, the signal-to-noise ratio margin, or determine, as the first information, a setting value corresponding to the margin interval to which the signal-to-noise ratio margin belongs, so as to implement flexible indication of the signal-to-noise ratio margin.

In one possible design, the specific MCS may be the highest MCS supported by the terminal device or set, or an MCS suggested for downlink data transmission by the terminal device.

In one possible design, when the first information is used to characterize an MCS proposed by the terminal device for data transmission of the multi-user pairing, the processing module may determine, according to the RS resource channel measurement, a signal-to-noise ratio of downlink data transmission of the multi-user pairing that the terminal device participates in, and determine the first information according to the signal-to-noise ratio.

In one possible design, the processing module may determine a transmission power of downlink data of the multi-user pair, and determine a signal-to-noise ratio of the downlink data transmission of the terminal device participating in the multi-user pair according to the transmission power. Wherein, the transmission power of the multi-user paired downlink data can be expressed as

P is the total transmission power of the network equipment, M is the number of ports contained in the interference pilot frequency resource of the paired users, M is an integer and is more than or equal to 0, and RI is the rank used for downlink data transmission determined by the terminal equipment according to RS resource channel measurement.

Specifically, the processing module may determine, as the first information, an MCS index corresponding to a signal-to-noise ratio interval to which the signal-to-noise ratio value belongs, or quantize the signal-to-noise ratio value to the first information, or determine, as the first information, a setting value corresponding to the signal-to-noise ratio interval to which the signal-to-noise ratio value belongs.

In a third aspect, embodiments of the present application provide a communication device comprising a processor, and when the processor executes a computer program in a memory, the method according to the first aspect is performed.

In a fourth aspect, embodiments of the present application provide a communications apparatus that includes a processor and a memory, the memory storing computer-executable instructions; the processor is configured to execute computer-executable instructions stored by the memory to cause the communication device to perform a corresponding method as shown in the first aspect.

In a fifth aspect, an embodiment of the present application provides a communication apparatus, which includes a processor, a memory, and a transceiver, where the transceiver is configured to receive a signal or transmit a signal; the memory for storing program code; the processor is configured to call the program code from the memory to perform the method according to the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication apparatus, which includes a processor and an interface circuit, where the interface circuit is configured to receive a code instruction and transmit the code instruction to the processor; the processor executes the code instructions to perform a corresponding method as shown in the first aspect.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium for storing instructions that, when executed, enable the method of the first aspect to be implemented.

In an eighth aspect, embodiments of the present application provide a computer program product comprising instructions that, when executed, enable the method of the first aspect to be implemented.

In a ninth aspect, the present application provides a chip or chip system comprising a chip, which chip may comprise a processor. The chip may also include a memory (or storage module) and/or a communication interface (or communication module). The chip may be adapted to perform the method as described in the first aspect above and in any one of the possible designs of the first aspect above. The chip system may be formed by the above chip, and may also include the above chip and other discrete devices, such as a memory (or a storage module) and/or a communication interface (or a communication module). It is to be understood that when the method of the first aspect is implemented by a chip, the sending action in the first aspect corresponds to an output action of the chip, and the receiving action in the first aspect corresponds to an input action of the chip.

Advantageous effects of the second to ninth aspects described above reference may be made to the description of advantageous effects of the method described in the first aspect and its possible design.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2a is a schematic architecture diagram of another communication system according to an embodiment of the present application;

fig. 2b is a schematic architecture diagram of another communication system according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a measurement feedback method according to an embodiment of the present application;

fig. 4 is a schematic flowchart of another measurement feedback method provided in an embodiment of the present application;

fig. 5 is a schematic flowchart of another measurement feedback method provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments.

As shown in fig. 1, the measurement feedback method provided in the embodiment of the present application is applicable to a wireless communication system, which may include a terminal device 101 and a network device 102.

It should be understood that the above wireless communication system is applicable to both low frequency scenarios (sub 6G) and high frequency scenarios (above 6G). The application scenarios of the wireless communication system include, but are not limited to, a fifth generation system, a New Radio (NR) communication system, or a future evolved Public Land Mobile Network (PLMN) system.

The terminal device 101 shown above may be a User Equipment (UE), a terminal (terminal), an access terminal, a terminal unit, a terminal station, a Mobile Station (MS), a remote station, a remote terminal, a mobile terminal (mobile terminal), a wireless communication device, a terminal agent or a terminal device, etc. The terminal device 101 may be capable of wireless transceiving, and may be capable of communicating (e.g., wirelessly communicating) with one or more network devices of one or more communication systems and receiving network services provided by the network devices, such as, but not limited to, the illustrated network device 102.

The terminal device 101 may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN network, and the like.

In addition, the terminal device 101 may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the terminal device 101 may also be deployed on the water surface (such as a ship); the terminal device 101 may also be deployed in the air (e.g., aircraft, balloons, satellites, etc.). The terminal device 101 may be a mobile phone (mobile phone), a tablet (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in home (smart home), and the like. The terminal device 101 may be a communication chip having a communication module, a vehicle having a communication function, an in-vehicle device (e.g., an in-vehicle communication apparatus, an in-vehicle communication chip), or the like.

Network device 102 may be an access network device (or access network site). The access network device refers to a device providing a network access function, such as a Radio Access Network (RAN) base station, and the like. The network device 102 may specifically include a Base Station (BS), or include a base station and a radio resource management device for controlling the base station, and the like. The network device 102 may also include relay stations (relay devices), access points, and base stations in future 5G networks, base stations or NR base stations in future evolved PLMN networks, and so on. The network device 102 may be a wearable device or a vehicle mounted device. The network device 102 may also be a communication chip having a communication module.

For example, network devices 102 include, but are not limited to: next generation base stations (gnbs ) in 5G, evolved node bs (enbs) in LTE systems, Radio Network Controllers (RNCs), radio controllers under CRAN systems, Base Station Controllers (BSCs), home base stations (e.g., home evolved node bs or home node bs, HNBs), baseBand units (BBUs), transmission points (TRPs), Transmission Points (TPs), or mobile switching centers (msc). The network device 102 may also include a base station in a future 6G or newer mobile communication system.

In addition, as shown in fig. 2a, in the embodiment of the present application, data or control signaling may also be transmitted to a single or multiple terminal devices by a network device, or as shown in fig. 2b, data or control signaling may be transmitted to a single terminal device by multiple network devices. For the description of the terminal device and the network device shown in fig. 2a or fig. 2b, reference may be made to the description of the terminal device 101 and the network device 102.

The following describes a manner in which a terminal device reports MCS supported by the terminal device in the prior art by taking the system shown in fig. 1 as an example.

After accessing the cell of the network device 102, the terminal device 101 performs channel state measurement (or RS resource channel measurement, pilot signal measurement, and the like) according to a channel state information reference signal (CSI-RS), and reports the supported modulation and coding capability to the network device 102 through a channel-quality indicator (CQI) quantization value according to the measurement result.

When the terminal device 101 performs channel-state information (CSI) measurement, if it is determined that a codeword level snr after combining a single stream or multi-stream snr actually measured is greater than an snr threshold required by a highest Modulation and Coding Scheme (MCS) for data transmission, the CQI quantization value is determined as indication information of the highest MCS. It should be understood that the signal-to-noise ratio (or signal-to-noise ratio) described herein may be a signal-to-noise ratio (SNR) or a signal-to-interference-and-noise ratio (SINR). The mapping table of the signal-to-noise ratio and the MCS is predefined for the terminal equipment, the mapping table realizes the problem for the terminal equipment, and the mapping relation of the table may be different for different terminal equipment.

Assuming that the highest modulation scheme supported by the UE is 64 Quadrature Amplitude Modulation (QAM), the SNR threshold corresponding to the MCS-10% error rate (BLER) is shown in table 1.

TABLE 1

As shown in table 1, when the SNR at the codeword level detected by the terminal device 101 is greater than 20.1dB (i.e., the SNR corresponding to the highest MCS), for example, 25dB, the CQI quantization value may be determined as the index (index) of the highest MCS, i.e., the MCS index 28, or the indication information of the MCS index 28. If the code word level SNR actually measured by the terminal device 101 is 5.5, and reaches the SNR threshold (5.4) corresponding to a certain MCS, but does not reach the SNR threshold corresponding to a higher MCS, the CQI quantization value may be determined as the indication information of the MCS that the SNR reaches, for example, the CQI quantization value is the MCS index 14.

In addition, in consideration of the difference between the CSI-RS transmission power and the PDSCH transmission power actually carrying data, when configuring the RS resource for CSI measurement, the network device 102 configures a power control offset (powerControlOffset) parameter for indicating the power offset between the PDSCH and the CSI-RS resource and sends the parameter to the terminal device 101, and when quantizing the channel quality measured based on the CSI-RS, the terminal device 101 needs to consider powerControlOffset and convert the CSI-RS effective signal reception energy into the effective signal reception energy of the PDSCH to estimate the CSI information of the PDSCH. For example, powerControlOffset may indicate a linear difference between PDSCH and CSI-RS transmission power, and after measuring the SNR under CSI-RS transmission power, terminal device 101 may add the value indicated by powerControlOffset to the SNR to obtain the SNR under PDSCH transmission power, which is used to estimate MCS.

After obtaining the CQI quantization value reported by the terminal device 101, in an actual scheduling process, the network device 102 may generally adjust the MCS reported by the terminal device 101 through CQI quantization in consideration of factors such as a channel time varying characteristic introduced between a measurement time and a scheduling time, a pairing interference introduced by multi-user (MU) pairing, a difference between a user CSI measurement weighting vector and a data transmission weighting vector (these factors may be referred to as MCS adjustment factors hereinafter), so as to determine a final MCS used for user-level data transmission.

Therefore, in the current MCS determination method, the terminal device 101 reports a certain MCS through a CQI quantization value, but in a high snr scenario, a certain margin often exists between an actual measured snr of the terminal device and an snr threshold corresponding to the MCS, and the margin is unknown to the network device 102, which causes a deviation between the downlink data transmission channel quality presumed by the network device 102 based on the MCS reported by the terminal device and the actual channel quality, thereby affecting the system performance;

in addition, the snr measurement result of the terminal device 101 is obtained based on the CSI-RS transmission power, and a situation of multi-user pairing is not considered, and if multi-user pairing is adopted for data transmission (or called, the terminal device participates in multi-user pairing transmission, and multi-user pairing transmission for the terminal device), the network device needs to allocate transmission power of a PDSCH carrying data among a plurality of paired users, so that the transmission power of the PDSCH of the terminal device 101 may decrease relative to the CSI-RS transmission power, and an MCS proposed by the terminal device 101 has an error, which may also cause a deviation between a downlink data transmission channel quality presumed by the network device 102 based on the MCS reported by the terminal device and a real channel quality, thereby affecting system performance.

The embodiment of the application provides a measurement feedback method to optimize a CSI measurement and feedback mechanism in the prior art and improve the determination accuracy of MCS.

As shown in fig. 3, taking as an example that the execution subjects are the terminal device 101 and the network device 102 shown in fig. 1, the measurement feedback method provided in the embodiment of the present application may include the following processes:

s101: the terminal device 101 receives the RS resource configuration from the network device 102.

The RS resource configuration may be carried in the pilot configuration and/or the measurement reporting configuration.

The RS resource configuration may be used for terminal device 101 to perform RS resource channel measurement, for example, the RS resource configuration includes a resource configuration of CSI-RS (or other RS), and CSI measurement is performed by terminal device 101 according to the CSI-RS.

S102: the terminal apparatus 101 performs RS resource channel measurement according to the RS resource configuration.

S103: the terminal apparatus 101 determines a CQI quantization value from RS resource channel measurement. The CQI quantization value includes first information, where the first information is used to represent a signal-to-noise ratio margin of a specific order modulation coding scheme adopted by downlink data transmission of the terminal device 101, and/or the first information is used to represent a modulation coding scheme adopted by downlink data transmission proposed by the terminal device 101 and a signal-to-noise ratio margin adopting the modulation coding scheme, and/or the first information is used to represent a modulation coding scheme adopted by downlink data transmission that the terminal device proposed by the terminal device 101 participates in multi-user pairing.

Specifically, the CQI quantization value at least includes the first information, and may further include information such as a modulation and coding scheme that the terminal device 101 proposes to use for downlink data transmission, which is determined in a conventional manner used in the prior art, which is not specifically limited herein.

For example, the terminal device 101 may obtain a signal-to-noise ratio of a downlink data channel according to the RS resource channel measurement, and determine the first information according to the signal-to-noise ratio.

In one possible example, the first information determined herein may indicate the snr margin relative to the snr when the terminal device 101 employs the specific order modulation coding scheme, for example, the first information may indicate a difference between an actual snr of the downlink data transmission channel measured based on the pilot resource configuration and an snr required for the downlink data transmission employing the specific order modulation coding scheme.

In another example, the first information may indicate that the terminal device 101 proposes a modulation and coding scheme for downlink data transmission and a signal-to-noise ratio margin for the modulation and coding scheme, for example, the first information may indicate that the terminal device 101 proposes a modulation and coding scheme for downlink data transmission and indicate a difference between an actual signal-to-noise ratio measured based on the pilot resource configuration and a signal-to-noise ratio required for downlink data transmission in the proposed modulation and coding scheme.

In further examples, the downlink transmission signal-to-noise ratio may include a signal-to-noise ratio value of the downlink data transmission when terminal device 101 participates in the multi-user pairing, and terminal device 101 may determine the first information according to the signal-to-noise ratio value.

The multi-user pairing means that data transmission of a plurality of terminal devices is carried on the same time-frequency domain resource. Generally, the base station side may decide which terminal devices to perform multi-user pairing transmission based on the number of terminal devices to be transmitted in a cell, the amount of data to be transmitted by the terminal devices, available time-frequency domain resources in the cell, channel quality of the terminal devices, array structure of the base station side, and other factors.

The first information may be determined according to a signal-to-noise ratio of downlink data transmission when the terminal device 101 participates in multi-user pairing. For example, the terminal device 101 may determine the signal-to-noise ratio of downlink data transmission when the terminal device participates in the multi-user pairing according to the transmission power of downlink data of the multi-user pairing (or referred to as the transmission power of downlink data transmission when the terminal device performs the multi-user pairing), where the transmission power of downlink data of the multi-user pairing is related to the number of pairing layers. For example, when the number of pairing layers is n (that is, the same time-frequency domain resource simultaneously carries n stream data transmissions), the total transmission power of the network device 102 is shared by the downlink data of x (x < ═ n) terminal devices including the terminal device 101. Wherein, the specific inter-stream or inter-user power allocation scheme may adopt algorithms such as average allocation, water-filling allocation, and the like. For example, if the inter-stream power is evenly distributed, the terminal apparatus 101 refers to the CSI-RS transmission power 1/n times as much as the transmission power when determining the snr.

S104: the terminal apparatus 101 transmits the CQI quantized value to the network apparatus 102.

By adopting the method, the channel quality precision predicted by the network equipment can be improved. The terminal device 101 can feed back the signal-to-noise ratio margin of the specific order modulation coding mode for downlink data transmission to the network device 102, and the network device 102 can additionally consider the anti-interference capability brought by the signal-to-noise ratio margin, increase the number of layers of the cell configuration for the user, or better match the real channel capability of the terminal device when deciding the actual modulation coding mode for downlink data transmission of the user, thereby improving the system capacity. In addition, for a multi-user pairing scenario, the terminal device 101 may feed back a modulation and coding scheme adopted by the terminal device for suggesting downlink data transmission when participating in multi-user pairing, and instruct the base station side to select a more appropriate modulation and coding scheme for transmitting downlink data, thereby improving system capacity.

It should be understood that in the above flow shown in fig. 3, the terminal device 101 may be caused to carry the first information in the CQI quantization value when performing CSI feedback in a preset manner, such as configuration by the network device 102, decision by the terminal device 101, or protocol definition, and the terminal device 101 may be caused to determine the content represented by the first information in a manner, such as configuration by the network device 102, decision by the terminal device 101, or protocol definition. The content represented by the first information includes a signal-to-noise ratio margin of a specific order modulation coding mode adopted by downlink data transmission of the terminal device 101, and/or a modulation coding mode adopted by downlink data transmission and a signal-to-noise ratio margin adopting the modulation coding mode suggested by the terminal device 101, and/or a modulation coding mode adopted by downlink data transmission of which the terminal device participates in multi-user pairing suggested by the terminal device 101.

For example, one way when configured by the network device 102 is that the network device 102 sends a quantization manner (which may be used to indicate whether to carry the first information and/or indicate content represented by the first information) of the first information included in the CQI to the terminal device 101 together with the CSI measurement configuration through Radio Resource Control (RRC) signaling; in another mode, the network device 102 sends the quantization mode of the first information included in the CQI to the terminal device 101 together with the indication information for activating the semi-static CSI measurement through media access control-control element (MAC-CE) signaling; another method is to indicate the quantization mode of the first information included in the CQI together with indication information for activating aperiodic CSI measurement to the terminal apparatus 101 through Downlink Control Information (DCI) signaling.

One way for the terminal device 101 to make a decision is that, if the downlink channel signal-to-noise ratio estimated by the terminal device 101 based on CSI measurement is greater than the signal-to-noise ratio corresponding to the highest-order modulation coding scheme supported by the terminal device 101 (or a preset, protocol-defined, or other specific-order modulation coding scheme indicated by the network device 102), the CQI quantization value carries first information, and the content represented by the first information may be preset or configured by the network device 102; otherwise, if the signal-to-noise ratio of the downlink channel estimated by the terminal device 101 based on the CSI measurement is smaller than the signal-to-noise ratio corresponding to the highest modulation and coding scheme supported by the terminal device 101 (or a preset modulation and coding scheme of a protocol defined or other specific order indicated by the network device 102), the CQI quantization value is determined by using the existing scheme, that is, the CQI quantization value does not carry the first information.

In S103, in a possible example, if the first information is used to represent the snr margin of the downlink data transmission of the terminal device 101 in the specific order modulation coding scheme, the terminal device 101 may determine the first information according to the following procedure shown in fig. 4:

s201: the terminal device 101 performs downlink pilot signal measurement based on the pilot resource configuration configured by the network device 102, and estimates one or more of the following information: the downlink pilot frequency transmits a useful signal channel matrix, a pairing interference signal channel matrix, an adjacent cell and bottom noise interference receiving energy, the specific channel estimation and energy measurement mode is realized by a terminal equipment algorithm, and the existing determination mode can be adopted without restriction in the embodiment of the application.

S202: the terminal device 101 determines a Rank (RI) and a Precoding Matrix Index (PMI) for downlink data transmission according to the measured useful signal channel matrix, the paired interference signal channel matrix, the neighboring cell, and the bottom noise interference received energy. The specific manner of determining RI and PMI is not restricted in the embodiments of the present application, and an existing determination manner may be adopted.

S203: the terminal device 101 may determine the codeword level signal-to-noise ratio for downlink data transmission of the user based on the RI and PMI, and the specific calculation manner of the codeword level signal-to-noise ratio is not limited in the present invention, and the existing determination manner may be adopted.

S204: the terminal device 101 determines the snr margin according to the difference between the codeword level snr for the downlink data transmission of the user and the snr required by the specific MCS used for the downlink data transmission.

Wherein the specific order MCS may be indicated by the network device 102 or stored in the terminal device 101 in a preconfigured or protocol defined manner. For example, the specific-order MCS is the highest-order MCS supported by the terminal device 101, and taking table 1 as an example, the specific-order MCS is an MCS with an index of 28, or another MCS.

Further, the particular order MCS may include an MCS that is proposed for downlink data transmission. If the code word level SNR detected by the terminal device 101 is 25dB, according to table 1, the MCS used for downlink data transmission is proposed to be the MCS with index 28.

S205: the terminal apparatus 101 may determine the first information based on the snr margin and may use the first information as part or all of the CQI quantization value, or the CQI quantization value may include the first information.

The terminal device 101 may determine the first information according to the snr margin through a set algorithm.

Specifically, when determining the first information according to the snr margin, the terminal device 101 may determine an MCS index corresponding to a margin interval to which the snr margin belongs as the first information, or directly quantize the snr margin to obtain the first information, or determine a setting value corresponding to the margin interval to which the snr margin belongs as the first information.

The margin interval to which the signal-to-noise ratio margin belongs can be determined according to a mapping table between the signal-to-noise ratio and the MCS. As shown in table 1, if the SNR threshold corresponding to the MCS index 28 is 20.1, and the SNR determined by the terminal device 101 is greater than 20.1, the margin interval to which the SNR belongs may be [20.1, + ∞ ].

An example manner of determining the first information is to query the SNR-to-MCS mapping table according to the SNR-to-noise ratio margin, and use the queried MCS index (or index indication information) as the first information. The mapping table of SNR and MCS is shown in table 1.

Taking the index of MCS of a specific order as an example 28, if the codeword level SNR detected by the terminal device 101 is 25dB, the SNR margin (which may be expressed as delttsnr) is 25-20.1dB to 3.9dB, and according to table 1, the MCS corresponding to 3.9dB is 13, the terminal device 101 may use the MCS index 13 as the first information.

Another example of determining the first information is that the terminal device 101 may quantize the snr margin absolute value according to the effective value indicated by the MCS, and obtain the first information, and/or may quantize (e.g., round) the snr margin to obtain the first information.

For example, taking the index of the specific MCS as 28, if the codeword level SNR detected by the terminal device 101 is 25dB, the delttsnr is 3.9dB, and 3.9 is directly quantized to 4, the terminal device 101 may use 4 as the first information. Furthermore, when deltSNR is equal to or greater than 28dB, 28 can be used as the first information, and when deltSNR is equal to or less than 0, 0 can be used as the first information.

Another example of determining the first information is that the terminal device 101 may determine a set value corresponding to a margin interval to which the snr margin belongs as the first information, and/or may quantize the snr margin to the first information.

For example, the first information included in the CQI is quantized to 4 bits (bit), the effective quantization amount range is [ -7 dB-8 dB ], and the quantization precision is 1 dB; if the deltSNR is more than or equal to 8dB, the first information is 8; if the deltSNR is less than or equal to minus 7dB, the first information is minus 7; if-7 dB is less than or equal to deltSNR is less than or equal to 8dB, then quantization and reporting are performed on the near rounding of the snr margin, for example, when deltSNR is 3.9dB, and 3.9 is rounded to 4, the terminal device 101 may use 4 as the first information.

In addition, the first information may also be determined by rounding the snr margin, performing a function calculation, and the like.

It should be understood that the above manner of determining the first information according to the signal-to-noise ratio margin is an example, and should not be construed as limiting the manner of determining the first information.

Furthermore, it should be understood that the manner of determining the first information according to the snr margin may be configured by the network device 102 or determined by a pre-configuration or a protocol definition, where the network device 102 may also know the manner of determining the first information according to the snr margin for analyzing the first information reported by the terminal device 101.

S206: terminal device 101 may send the CQI quantized value to network device 102.

The CQI quantization value may include the first information and may further include indication information of an MCS suggested for downlink data transmission. The MCS to be adopted for the proposed downlink data transmission may be determined in an existing manner, for example, the CQI quantization value may include indication information of the MCS to be adopted for the proposed downlink data transmission and first information determined based on the MCS to be adopted for the proposed downlink data transmission.

S207: the network device 102 may determine the snr margin according to the first information reported by the terminal device 101, and determine an actual modulation and coding scheme used for downlink data transmission of the terminal device according to the snr margin.

And determining the actual signal-to-noise ratio of the downlink channel according to the signal-to-noise ratio margin and the specific order MCS, and considering factors such as interference between paired users, difference between a user weighting vector and a CSI measurement weighting vector after pairing, difference between sending power of terminal equipment after pairing and CSI measurement reference power, channel time varying characteristics introduced by inconsistency between CSI measurement time and data transmission time, and the like, and deciding the actual modulation and coding mode adopted by downlink data transmission of the terminal equipment. For example, the network device 102 may adjust an MCS adopted for downlink data transmission suggested by the terminal device 101 through the CQI quantization value (the MCS is determined by the terminal device 101 according to a downlink transmission signal-to-noise ratio), for example, determine a downlink transmission signal-to-noise ratio actually measured by the terminal device 101 according to the signal-to-noise ratio margin and the signal-to-noise ratio corresponding to the MCS, and decide an actual modulation and coding scheme adopted for downlink data transmission of the terminal device according to the downlink transmission signal-to-noise ratio; or the network device 102 determines the downlink transmission signal-to-noise ratio actually measured by the terminal device 101 according to the specific-order MCS and the signal-to-noise ratio margin, and decides the actual modulation coding mode adopted by the downlink data transmission of the terminal device according to the downlink transmission signal-to-noise ratio.

When determining the snr margin according to the first information, the network device 102 may determine the snr margin according to the manner of determining the first information by the terminal device 101 and according to the manner of responding. For example, if the first information is obtained by querying the SNR and MCS mapping table, the network device 102 may also query the SNR and MCS mapping table to determine the SNR margin according to the first information.

It should be understood that the actual MCS for downlink data transmission determined by the network device 102 and the CQI quantized MCS reported by the terminal device 101 may be set to different orders of MCS.

Furthermore, it should be understood that the above CQI quantization values may be either wideband levels (quantized to the same CQI value for the full bandwidth) or subband levels (the full bandwidth is divided into a plurality of subbands, each subband corresponding to one CQI quantization value).

For example, the above description of the codeword level SNR is based on the assumption that the PDSCH and CSI-RS resource power offset powerControlOffset is 0; when the power offset powerControlOffset of the PDSCH and the CSI-RS resource is not equal to 0, the SNR obtained based on CSI measurement needs to be converted into the SNR of the PDSCH when a CQI quantized value is determined, and the SNR margin is determined according to the SNR of the PDSCH; for example, assuming that powerControlOffset is 2dB, and the SNR obtained based on CSI measurement is 10dB, the SNR of the corresponding PDSCH is (10+2) 12 dB.

By adopting the process shown in fig. 4, the terminal device can feed back the signal-to-noise ratio margin adopting the specific order modulation coding mode to the network device, the network device can additionally consider the anti-interference capability brought by the signal-to-noise ratio margin, increase the number of layers of the cell configuration to the user, or better match the real channel capability of the terminal device when deciding the actual modulation coding mode of the downlink data transmission of the user, thereby improving the system capacity.

In another possible example of S103, if the first information is used to characterize a modulation and coding scheme adopted for downlink data transmission when terminal device 101 participates in multi-user pairing, terminal device 101 may consider allocation of transmit power of network device 102 for multi-user pairing transmission when determining a signal-to-noise ratio of downlink data transmission.

Illustratively, the terminal device 101 may be configured by the network device 102 or defined by a protocol to determine the signal-to-noise ratio value according to the transmission power allocation of the network device 102 for the multi-user paired transmission, or the terminal device 101 may be configured by the network device 102 or defined by a protocol to determine the calculation of the CQI quantization value in an existing manner.

Among them, one way when configured by the network device 102 is that the network device 102 sends configuration information for indicating a CQI quantization value calculation manner to the terminal device 101 together with CSI measurement configuration through RRC signaling; in another way, the network device 102 sends configuration information for indicating the CQI quantization value calculation method to the terminal device 101 together with indication information for activating semi-static or aperiodic CSI measurement through MAC-CE signaling; another way is to indicate configuration information for indicating the CQI quantization value calculation manner together with indication information for activating aperiodic CSI measurement to the terminal apparatus 101 through DCI signaling.

One way when specified by the protocol is that the RS resource configuration for CSI measurement configured at the network device 102 for the terminal device 101 defined by the protocol contains one or more of the following information: a channel measurement resource (resource for channel measurement), a channel state information interference measurement (CSI-IM) resource (CSI-IM-resource interference), and an interference measurement non-zero power channel state information reference signal resource (or called paired user interference pilot resource) (NZP-CSI-RS) resource (NZP-CSI-RS-resource interference). The interference measurement CSI-IM resource is used for measuring inter-cell interference, and the interference measurement NZP-CSI-RS resource is used for measuring intra-cell paired user interference. When the RS resource configuration includes the paired user interference pilot resource (nzp-CSI-RS-resources for interference, the terminal device 101 determines the signal-to-noise ratio according to the transmission power allocation of the network device 102 for the multi-user pairing, otherwise, the terminal device 101 determines the signal-to-noise ratio according to the existing CQI quantization value determining method.

Specifically, if the first information is used to represent a modulation and coding scheme adopted by the proposed downlink data transmission when the terminal device 101 participates in the multi-user pairing, the terminal device 101 may determine the first information according to the process shown in fig. 5:

s301: and the terminal equipment 101 determines the sending power of the downlink data paired by multiple users according to the RS resource configuration.

Specifically, the transmission power of the downlink data of the multi-user pair can be represented as p', wherein,

p is the total transmission power (default to 1) of the network device 102, M is the number of ports included in the interference pilot resource of the paired user, M is an integer, and M is greater than or equal to 0, and RI is the rank for downlink data transmission determined by the terminal device 101 according to the downlink channel state information CSI measurement.

S302: the terminal device 101 determines the signal-to-noise ratio of the downlink data transmission of the terminal device 101 participating in the multi-user pairing according to the sending power of the downlink data of the multi-user pairing.

Specifically, taking SINR as an example, a calculation method of SINR for suggesting that the terminal device 101 participates in downlink data transmission of multi-user pairing may be represented as follows:

another way of calculation can be expressed as:

wherein, S is pilot signal energy received on a time-frequency domain resource carrying an RS signal, dletP is a linear difference between a transmission power of a PDSCH and a transmission power of a CSI-RS, I is total pilot signal energy received on a pilot resource carrying interference of a paired user, i.e., the interference of the paired user, and N is signal energy received on a CSI-IM resource, i.e., the noise floor and the interference of an adjacent cell.

Alternatively, the processes shown in S301 and S302 above may be replaced with S303:

s303: the terminal device 101 determines the signal-to-noise ratio of the downlink data transmission of the terminal device 101 participating in the multi-user pairing based on the measurement result of the downlink pilot signal measurement. And the downlink pilot signal measurement is carried out according to the RS resource allocation.

Taking the signal-to-noise ratio as SINR as an example, SINR can be expressed as:

wherein dletP is a linear difference between the transmission power of the PDSCH and the transmission power of the CSI-RS, I is the total energy of a pilot signal received on a carrier-paired user interference pilot resource, namely the paired user interference, and N is the signal energy received on the carrier-CSI-IM resource, namely the bottom noise and the adjacent cell interference.

For example, assume that resource for channel measurement is configured as 2port-RS, nzp-CSI-RS-resource for interference is configured as 8port RS, RI selected by the terminal device 101 for downlink data transmission is 1, powerControlOffset is 3dB, useful signal energy S received by the UE is 80, and total interference energy Σ of the paired user

And the total energy N of the adjacent area and the bottom noise is 0.3.

Then

SINR_dB＝10*log10(sinr)＝16.99(dB)。

It should be understood that the measurement results of the downlink pilot signal measurements include at least the RI. The measurement results of RI and SINR may be obtained based on the same downlink pilot signal measurement, or based on different downlink pilot signal measurements.

S304: the terminal device 101 combines the stream-level signal-to-noise values determined at S301-S302 or S303 into a codeword-level signal-to-noise value.

S305: the terminal device 101 determines the first information according to the code word level signal-to-noise ratio value.

The terminal device 101 may determine the first information according to the code word level signal-to-noise ratio value through a set algorithm.

Specifically, in one possible implementation manner of S305, the terminal device 101 may query a mapping table between the signal-to-noise ratio value and the MCS, determine the MCS closest to the actually measured signal-to-noise ratio value, and determine the first information as the MCS index corresponding to the signal-to-noise ratio value or the indication information of the MCS index corresponding to the signal-to-noise ratio value.

In another way of determining the first information, the terminal device 101 may directly quantize the codeword level signal-to-noise ratio to obtain the first information.

In another way of determining the first information, the terminal device 101 may determine a set value corresponding to a signal-to-noise ratio interval to which the code word level signal-to-noise ratio belongs as the first information.

In S305 another possible implementation manner, the terminal device 101 may determine the snr margin according to the MCS of the actually measured snr value and the MCS of the specific order, and determine the first information according to the snr margin. The manner of determining the first information according to the snr margin may refer to the description of determining the first information according to the snr margin in the present application.

In an example implementation, if the determined SINR is 25 and the index of the MCS of the specific order is the MCS index 28 shown in table 1, the terminal device 101 may determine that deltsnr is 3.9, and if the look-up table 1 determines that the MCS index corresponding to 3.9dB is 13, it may use 13 as the first information.

S306: the terminal apparatus 101 transmits the CQI quantized value to the network apparatus 102. The CQI quantization value includes at least first information.

S307: the network device 102 determines an actual MCS used for downlink data transmission of the terminal device according to the first information.

Specifically, the network device 102 may determine, according to the first information, an MCS that is proposed by the terminal device 101 and used for downlink data transmission of the multi-user pairing, and determine, according to the MCS, an MCS that is actually used for downlink data transmission of the terminal device and used for the multi-user pairing.

It should be understood that the terminal device 101 may determine the first information according to the signal-to-noise ratio value through a setting algorithm, and accordingly, the network device 102 may analyze the first information according to a corresponding algorithm to obtain the signal-to-noise ratio value, and obtain an MCS according to the signal-to-noise ratio value, where the MCS is adopted for performing multi-user paired data transmission and is suggested by the terminal device 101.

By adopting the process shown in fig. 5, for a multi-user pairing scenario, the terminal device may feed back a modulation and coding scheme that is adopted for downlink data transmission that suggests the terminal device to participate in multi-user pairing, and guide the base station side to select a more appropriate modulation and coding scheme for transmitting downlink data, thereby improving system capacity.

The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic and are intended to fall within the scope of the present application.

It is to be understood that, in the above-described method embodiments, the method and the operation implemented by the terminal device may also be implemented by a component (e.g., a chip or a circuit) available for the terminal device, and the method and the operation implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) available for the network device.

The above description mainly introduces the scheme provided by the embodiments of the present application from various interaction perspectives. It is understood that each network element, for example, the transmitting end device or the receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to implement the above functions. Those skilled in the art will appreciate that the various illustrative elements and algorithmic processes described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the functional modules may be divided according to the above method example for the transmitting end device or the receiving end device, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a form of hardware or a form of a software functional module. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The following description will be given by taking an example in which each functional module is divided by using a corresponding function.

The method provided by the embodiment of the present application is described above with reference to fig. 3 to 5. Hereinafter, a communication apparatus provided in an embodiment of the present application will be described with reference to fig. 6 to 7. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, for brevity, details are not repeated here, since the details that are not described in detail may be referred to the above method embodiments.

Based on the same concept, in order to implement each function in the method provided by the embodiment of the present application, the present application also provides a communication device. The communication apparatus may be configured to perform the procedure performed by the terminal device in the above method embodiment. The communication means may comprise a hardware structure and/or a software module, and the functions described above are realized in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

As shown in fig. 6, a communication apparatus provided in an embodiment of the present application may include a communication module 601 and a processing module 602, where the communication module 601 and the processing module 602 are coupled to each other. The communication apparatus 600 may be used to perform the process performed by the terminal device shown in fig. 3 above. The communication module 601 may be used to support the communication device 600 for communication, for example, the communication module 601 may include a sending module and/or a receiving module, and the communication module 601 may also be referred to as a communication unit, a communication interface, a transceiver module or a transceiver unit. The communication module 601 may be provided with a data transmission function. The processing module 602 may also be referred to as a processing unit, and may be used to support the communication apparatus 600 to perform the processing actions of the terminal device in the above method embodiments, including but not limited to: generate data, signaling sent by the communication module 601 that satisfies the communication protocol, and/or process signals received by the communication module 601.

For example: the communication module 601, which may also be referred to as a transceiver unit, includes a transmitting unit and/or a receiving unit, which are respectively configured to perform the processes of transmitting and receiving of the terminal device in the above method embodiments.

In one possible design, the communication device 600 may implement the steps or processes executed by the terminal device corresponding to the above method embodiment, for example, the terminal device, or a chip or circuit configured in the terminal device. The communication module 601 is configured to perform transceiving related operations on the terminal device side in the foregoing method embodiments, and the processing module 602 is configured to perform processing related operations on the terminal device in the foregoing method embodiments.

Specifically, the communication module 601 can be configured to receive RS resource configuration from a network device. The processing module 602 can be configured to perform RS resource channel measurements according to the RS configuration. The processing module 602 may further determine a CQI quantization value according to a measurement result of RS resource channel measurement, where the CQI quantization value may include first information, and the first information may represent a signal-to-noise ratio margin for downlink data transmission of a terminal device with a specific MCS, and/or represent an MCS for downlink data transmission of a terminal device that is suggested to participate in multi-user pairing. The communication module 601 may send the CQI quantization value to the network device.

In a possible design, when the first information is used to represent that the downlink data transmission of the terminal device adopts the snr margin of the MCS of a specific order, the processing module 602 may obtain the downlink transmission snr according to the measurement result of the RS resource channel measurement, determine the snr margin according to the downlink transmission snr, and determine the first information according to the snr margin. The signal-to-noise ratio margin is the difference between the signal-to-noise ratio of downlink transmission and the signal-to-noise ratio required by downlink transmission adopting a specific-order MCS.

In one possible design, the processing module 602 may determine the first information according to the snr margin through a set algorithm.

Specifically, the processing module 602 may determine, as the first information, an MCS index corresponding to a margin interval to which the snr margin belongs, or quantize the snr margin to the first information, or determine, as the first information, a setting value corresponding to the margin interval to which the snr margin belongs, so as to implement flexible indication of the snr margin.

In a possible design, when the first information is used to characterize an MCS proposed by the terminal device for data transmission of the multi-user pairing, the processing module 602 may further determine, according to a measurement result of RS resource channel measurement, a signal-to-noise ratio of downlink data transmission of the terminal device participating in the multi-user pairing, and determine the first information according to the signal-to-noise ratio.

In one possible design, the processing module 602 may determine a transmission power of downlink data of the multi-user pair, and determine a signal-to-noise ratio of the downlink data transmission of the terminal device participating in the multi-user pair according to the transmission power. Wherein the transmission power of the multi-user paired downlink data is

P is the total transmission power of the network equipment, M is the number of ports contained in the interference pilot frequency resource of the paired user, M is an integer and is more than or equal to 2, and RI is the rank for downlink data transmission determined by the terminal equipment according to CSI measurement.

In one possible design, processing module 602 may determine the first information according to a signal-to-noise ratio value through a set algorithm.

Specifically, the processing module 602 may determine an MCS index corresponding to the snr interval to which the snr value belongs as the first information, or quantize the snr value to the first information, or determine a setting value corresponding to the snr interval to which the snr value belongs as the first information.

It should be understood that the specific processes of the above modules for executing the above corresponding processes have been described in detail in the above method embodiments, and are not described herein again for brevity.

In addition, in another possible implementation manner, if the communication device is implemented by hardware components, the structure of the communication device can also be as shown in fig. 7. For ease of understanding, fig. 7 only illustrates the structure of the communication device necessary for executing the method of the present application by using a mobile phone as an example, and the present application does not limit the communication device to have more components. The communication device 700 may include a transceiver 701, a memory 702, and a processor 703. The transceiver 701 may be used for communication by a communication device, such as for transmitting or receiving signals by wire and/or wirelessly, to transmit and/or receive information, data, messages, and the like. The memory 702 is coupled to the processor 703 and is used for storing programs and data necessary for the communication device 700 to perform various functions. The processor 703 is configured to enable the communication apparatus 700 to perform processing functions performed by the terminal device in the above-described method, such as determining to generate information, messages transmitted by the transceiver 701, and/or demodulating and decoding signals received by the transceiver 701, and so on. The memory 702 and the processor 703 may be integrated or independent of each other.

Illustratively, the transceiver 701 may include a wireless communication area that may be used to support the communication device 700 to receive and transmit signaling and/or data via a wired connection. The transceiver 701 may also be referred to as a transceiving unit or a communication unit. Alternatively, the transceiver 701 may include a wireless transceiver (e.g., including a modem and/or an antenna) that may be used to enable the communication device 700 to receive and transmit signaling and/or data wirelessly. The transceiver 701, which may also be referred to as a wireless transceiver or a wireless communication unit, may include a transmitter and a receiver, which may be respectively connected to one or more antennas.

The processor 703 may be implemented by a processing chip or a processing circuit.

It should be understood that the above transceiver 701 may be used to perform actions performed by the communication module 601. The processor 703 may be used to invoke computer programs or instructions in the memory 702 to perform the actions performed by the processing module 602.

Further, it is to be understood that the memory 702 and/or the transceiver 701 shown in fig. 7 may also be connected to the processor 703 of the communication device 700 in an external manner. For example, the communication device 700 includes a processor 703, a memory 702, and a transceiver 701, which are all configured in an external manner. For another example, the communication device 700 includes a processor 703 and a transceiver 701, and the memory 702 is configured in an external manner. For another example, the communication device 700 includes a processor 703 and a memory 702, and the transceiver 701 is configured in an external manner.

In particular, the transceiver 701 can be configured to receive an RS resource configuration from a network device. The processor 703 can be configured to perform RS resource channel measurements according to the RS configuration. The processor 703 may further determine a CQI quantization value according to a measurement result of RS resource channel measurement, where the CQI quantization value may include first information, and the first information may represent a signal-to-noise ratio margin for downlink data transmission of a terminal device with a specific MCS, and/or represent an MCS for downlink data transmission of a terminal device that is suggested to participate in multi-user pairing. Transceiver 701 may send the CQI quantization value to the network device.

In a possible design, when the first information is used to represent the snr margin of a specific MCS for downlink data transmission of the terminal device, the processor 703 may obtain a downlink transmission snr according to a measurement result of RS resource channel measurement, determine the snr margin according to the downlink transmission snr, and determine the first information according to the snr margin. The signal-to-noise ratio margin is the difference between the signal-to-noise ratio of downlink transmission and the signal-to-noise ratio required by downlink transmission adopting a specific-order MCS.

In one possible design, the processor 703 may determine the first information according to the snr margin through a set algorithm.

Specifically, the processor 703 may determine, as the first information, an MCS index corresponding to a margin interval to which the snr margin belongs, or quantize the snr margin to the first information, or determine, as the first information, a setting value corresponding to the margin interval to which the snr margin belongs, so as to implement flexible indication of the snr margin.

In one possible design, when the first information is used to characterize an MCS proposed by the terminal device for data transmission of the multi-user pairing, the processor 703 may further determine, according to a measurement result of RS resource channel measurement, a signal-to-noise ratio of downlink data transmission of the terminal device participating in the multi-user pairing, and determine the first information according to the signal-to-noise ratio.

In one possible design, the processor 703 may determine a transmission power of downlink data of the multi-user pair, and determine a signal-to-noise ratio of the downlink data transmission of the terminal device participating in the multi-user pair according to the transmission power. Wherein the transmission power of the multi-user paired downlink data is

In one possible design, the processor 703 may determine the first information according to a signal-to-noise ratio value through a set algorithm.

Specifically, the processor 703 may determine an MCS index corresponding to the snr interval to which the snr value belongs as the first information, or quantize the snr value to the first information, or determine a setting value corresponding to the snr interval to which the snr value belongs as the first information.

It should be understood that the specific processes of the above devices for performing the above corresponding processes have been described in detail in the above method embodiments, and are not described herein again for brevity.

The embodiment of the application also provides a processing device which comprises a processor and an interface. The processor may be adapted to perform the method of the above-described method embodiments.

It should be understood that the processing means may be a chip. For example, the processing device may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

In implementation, the processes of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processes of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads the computer program, instructions, information and/or data in the memory, and performs the processes of the above-mentioned methods in combination with hardware thereof. To avoid repetition, it is not described in detail here.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the processes of the above method embodiments may be performed by integrated logic circuits of hardware or instructions in the form of software in a processor. The processor described above may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The processes of the methods disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the process of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method of any of the embodiments shown in fig. 3.

According to the method provided by the embodiment of the present application, the present application also provides a computer readable medium, which stores program code, and when the program code runs on a computer, the computer is caused to execute the method of any one of the embodiments shown in fig. 3.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

The network device in the foregoing various apparatus embodiments corresponds to the network device or the terminal device in the terminal device and method embodiments, and the corresponding module or unit executes the corresponding process, for example, the communication unit (transceiver) executes the process of receiving or transmitting in the method embodiments, and other processes besides transmitting and receiving may be executed by the processing unit (processor). The functions of the specific elements may be referred to in the respective method embodiments. The number of the processors may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the processes of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A measurement feedback method is applied to a terminal device, and comprises the following steps:

performing RS resource channel measurement according to the RS resource configuration configured by the network equipment;

determining a Channel Quality Indicator (CQI) quantized value according to the measurement result of the RS resource channel measurement, wherein the CQI quantized value comprises first information;

the first information is used for representing the signal-to-noise ratio allowance of a specific order Modulation Coding Scheme (MCS) adopted by the terminal equipment for data transmission; and/or the presence of a gas in the gas,

the first information is used for representing an MCS which is suggested by the terminal equipment and is adopted for data transmission of multi-user pairing;

and sending the CQI quantized value to the network equipment.

2. The method of claim 1, wherein the first information is used to characterize a signal-to-noise ratio margin for the terminal device to employ a particular MCS for data transmission;

the determining a Channel Quality Indicator (CQI) quantization value according to the measurement result of the RS resource channel measurement includes:

acquiring signal-to-noise ratio allowance according to the measurement result of the RS resource channel measurement, wherein the signal-to-noise ratio allowance is a difference value between a downlink transmission signal-to-noise ratio and a signal-to-noise ratio required by downlink transmission by adopting the specific-order MCS, and the measurement result of the RS resource channel measurement comprises the downlink transmission signal-to-noise ratio;

and determining the first information according to the signal-to-noise ratio margin.

3. The method of claim 2, wherein said determining the first information based on the signal-to-noise margin comprises:

and determining the first information through a set algorithm according to the signal-to-noise ratio margin.

4. The method of any of claims 1-3, wherein the particular order MCS is a highest order MCS supported by the terminal device, or wherein the particular order MCS is set, or wherein the particular order MCS is a MCS proposed by the terminal device for downlink data transmission.

5. The method of any of claims 1-4, wherein the first information is used to characterize an MCS proposed by the terminal device for data transmission for multi-user pairing;

determining the signal-to-noise ratio of downlink data transmission of multi-user pairing of the terminal equipment according to the measurement result of the RS resource channel measurement;

and determining the first information according to the signal-to-noise ratio.

6. The method of claim 5, wherein the determining the signal-to-noise ratio of the downlink data transmission of the multi-user pairing by the terminal device according to the measurement result of the RS resource channel measurement comprises:

determining the signal-to-noise ratio according to the sending power of downlink data transmission of the multi-user pairing of the terminal equipment;

wherein, the sending power of the downlink data transmission of the terminal equipment for multi-user pairing is

P is the total transmission power of the network equipment, M is the number of ports contained in the interference pilot frequency resource of the paired users, M is an integer and is more than or equal to 0, and RI is the rank of downlink data transmission determined by the terminal equipment according to the measurement result of the RS resource channel measurement.

7. The method of claim 5 or 6, wherein said determining the first information based on the signal-to-noise ratio value comprises:

and determining the first information through a set algorithm according to the signal-to-noise ratio value.

8. A communications apparatus, comprising:

the processing module is used for performing RS resource channel measurement according to RS resource configuration configured by network equipment, and determining a Channel Quality Indicator (CQI) quantized value according to a measurement result of the RS resource channel measurement, wherein the CQI quantized value comprises first information;

a communication module, configured to send the CQI quantized value to the network device;

the first information is used for representing the signal-to-noise ratio allowance of a specific order MCS adopted by the terminal equipment for data transmission; and/or the presence of a gas in the gas,

the first information is used for representing the MCS which is proposed by the terminal equipment and is adopted for carrying out multi-user pairing data transmission.

9. The communications apparatus of claim 8, wherein the first information characterizes a signal-to-noise ratio margin for the terminal device to employ a particular order MCS for data transmission;

the processing module is specifically configured to:

acquiring signal-to-noise ratio allowance according to the measurement result of the RS resource channel measurement, wherein the signal-to-noise ratio allowance is a difference value between a downlink transmission signal-to-noise ratio and a signal-to-noise ratio required by downlink transmission adopting the specific-order MCS transmission, and the measurement result of the RS resource channel measurement comprises the downlink transmission signal-to-noise ratio;

10. The communications apparatus of claim 8 or 9, wherein the particular order MCS is a highest order MCS supported by the terminal device, or the particular order MCS is set, or the particular order MCS is an MCS used for downlink data transmission suggested by the terminal device.

11. The communications apparatus of any of claims 8-10, wherein the first information characterizes an MCS that is proposed by a terminal device for data transmission for multi-user pairing;

the communication module is specifically configured to:

determining the signal-to-noise ratio of the data transmission of the multi-user pairing of the terminal equipment according to the measurement result of the RS resource channel measurement;

and determining the first information according to the signal-to-noise ratio.

12. The communications apparatus as claimed in claim 11, wherein the communications module is specifically configured to:

P is the total transmission power of the network equipment, M is the number of ports contained in the interference pilot frequency resource of the paired users, M is an integer and is more than or equal to 0, and RI is the rank used for downlink data transmission determined by the terminal equipment according to the RS resource channel measurement.

13. A computer-readable storage medium, in which a computer program or instructions are stored which, when run on a computer, cause the computer to perform the method of any one of claims 1-7.