WO2015051529A1

WO2015051529A1 - Method, apparatus and system for channel measurement and csi feedback

Info

Publication number: WO2015051529A1
Application number: PCT/CN2013/085039
Authority: WO
Inventors: 张佳胤; 林英沛; 杨讯
Original assignee: 华为技术有限公司
Priority date: 2013-10-11
Filing date: 2013-10-11
Publication date: 2015-04-16
Also published as: CN110350959A; CN105393482A; CN110350959B

Abstract

Disclosed in the present invention are a method, apparatus and system for channel measurement and CSI feedback, which relate to the technical field of communications and solve the problem that occupation of a large quantity of continuous air interface resources is required in completing one measurement and CSI feedback procedure, bringing low flexibility and therefore degrading system performances. The method of the present invention may specifically comprise: a sending device broadcasting a training sequence for channel measurement and an identifier of the sending device in order that a receiving device measures the CSI of at least one designated device according to the training sequence and the identifier of the sending device, the receiving device being a device receiving the training sequence and the identifier of the sending device; and the sending device sending CSI feedback indication time to the receiving device in order that the receiving device sends the measured CSI of the at least one designated device to the sending device at the CSI feedback indication time. The method of the present invention can be applied to channel detection.

Description

Method, device and system for channel measurement and CSI feedback

The present invention relates to the field of communications technologies, and in particular, to a method, apparatus, and system for channel measurement and channel state information CSI feedback.

Background technique

In a MIMO (Multiple Input Multiple Output) system, each time the transmitting device sends data to the receiving device, the receiving device can use the CSI (Channel State Information) obtained by the channel measurement to pass the coherent receiving algorithm. Combining data received through multiple receiving antennas, and suppressing interference between spatial streams corresponding to multiple receiving antennas, thereby obtaining array gain and space division multiplexing gain, thereby increasing the received data. The correct rate; in addition, the transmitting device can also obtain CSI, and the transmitting device can perform linear precoding processing according to the received CSI fed back by the receiving device, so that the accuracy of the data received by the receiving device is further increased.

Receiving the device feedback CSI may include: the receiving device may obtain the CSI by detecting a Sounding PPDU (Physical Protocol Data Unit) sent by the sending device, and then actively feed the CSI to the sending device for sending by using a special management frame. The device performs beamforming (TxBF).

In the IEEE 802. llac standard, MU-MIMO (Multiple User-MIMO) is further introduced. In IEEE802. llac, the specific CSI measurement feedback process is shown in Figure 1. It can include: a transmitting device, such as a beamformer Beamformer, to a specific device, a device, a Beamformee 1/2/3, a broadcast VHT. NDP Announcement (Very High Throughput NDPA), where VHT NDPA may include information of a specified receiving device that requires CSI measurement and CSI feedback; at interval SIFS (Short) Inter frame space, after the short frame interval, the transmitting device broadcasts the NDP; the designated receiving device receives the The long training field (LTF, Long Training Field) included in the NDP measures the transmitting device to the respective channel CSI; after the NDP ends and intervals the SIFS, one of the receiving devices is designated to feed back the measured CSI; then, the transmitting device per The SIFS in turn passes the Beamforming Report Poll to indicate that the specified receiving device that does not feed back the CSI feeds back the CSI.

In the process of the above-mentioned channel detection, the CSI measurement and the CSI feedback are bound, that is, the CSI feedback needs to be performed every time the receiving device measures the CSI, and the CSI process needs to occupy a large amount of continuous air interface resources, and the flexibility is low. This reduces the performance of the system.

Summary of the invention

Embodiments of the present invention provide a method, apparatus, and system for channel measurement and CSI feedback, which completes a measurement and feedback CSI process needs to occupy continuous air interface resources, and has low flexibility, thereby reducing the performance of the system. In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In a first aspect, a method for channel measurement and CSI feedback is provided, including:

The transmitting device broadcasts a training sequence for channel measurement and an identifier of the transmitting device, so that the receiving device measures CSI of the at least one specified device according to the training sequence and the identifier of the sending device, where the receiving device receives the a training sequence and a device for transmitting the identity of the device;

The transmitting device sends a CSI feedback indication time to the receiving device, so that the receiving device sends the measured CSI of the at least one designated device to the sending device at the CSI feedback indication time. In a second aspect, a method for channel measurement and CSI feedback is provided, including: receiving, by a receiving device, a training sequence for channel measurement broadcast by a transmitting device and an identifier of the sending device;

Measuring at least one designated device according to the training sequence and the identifier of the transmitting device CSI;

Receiving a CSI feedback indication time sent by the sending device;

Transmitting, to the transmitting device, the CSI of the measured at least one designated device at the CSI feedback indication time. In a third aspect, a sending device is provided, including:

a broadcast unit, configured to broadcast a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CSI of the at least one specified device according to the training sequence and the identifier of the sending device, where the receiving device is receiving a device to the training sequence and the identification of the transmitting device;

And a first sending unit, configured to send a CSI feedback indication time to the receiving device, so that the receiving device sends the measured CSI of the at least one specified device to the sending device at the CSI feedback indication time.

In a fourth aspect, a receiving device is provided, including:

a first receiving unit, configured to receive a training sequence for channel measurement broadcast by the sending device, and an identifier of the sending device;

a measuring unit, configured to measure CSI of at least one specified device according to the training sequence and the identifier of the sending device;

a second receiving unit, configured to receive a CSI feedback indication time sent by the sending device, where the first sending unit is configured to send, to the sending device, the measured CSI of the at least one specified device at the CSI feedback indication time. In a fifth aspect, a system for channel detection and CSI feedback is provided, including:

a sending device, configured to broadcast a training sequence for channel measurement, and an identifier of the sending device, where the receiving device is a device that receives the training sequence and an identifier of the sending device; and sends CSI feedback to the receiving device Indicating time The receiving device is configured to receive the training sequence broadcast by the sending device and the identifier of the sending device, and measure CS I of at least one specified device according to the training sequence and the identifier of the sending device; And sending, by the sending device, the CS I feedback indication time; sending, by the CS I feedback indication time, the measured CS I of the at least one specified device to the sending device. The method, device, and system for channel detection provided by the embodiments of the present invention, after using the foregoing solution, the sending device broadcasts a training sequence for channel measurement and an identifier of the sending device, so that the receiving device according to the training sequence and the The identity of the sending device measures at least one of the specified devices

CS I, the receiving device is a device that receives the training sequence and the identifier of the sending device; the sending device sends a CS I feedback indicating time to the receiving device, so that the receiving device is in the CS I feedback indication The time sends the measured CS I of the at least one specified device to the transmitting device. The receiving device receives the training sequence and the identity of the transmitting device and measures the designated device as compared with the prior art performing the feedback step immediately after performing the measuring step, that is, the binding of the measuring step and the feedback step. After the CS I, and sending the CS I to the transmitting device at the CS I feedback indicating time, the measuring step of the CS I is separated from the feedback step, so that a large number of consecutive air ports are not occupied at one time when performing the measuring step or the feedback step. Resources, which can use discrete air interface resources to perform measurement and feedback steps, increase flexibility and increase system performance.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without any creative work.

1 is an information interaction diagram of channel detection in the prior art;

FIG. 2 is a flowchart of a method for channel measurement and CS I feedback according to an embodiment of the present invention; FIG. 3 is a flowchart of another method for channel measurement and CS I feedback provided by this embodiment; A flow chart of another method of channel measurement and CS I feedback; 5 is an information interaction diagram of the method of channel measurement and CS I feedback shown in FIG. 4; FIG. 6 is a time domain flowchart for broadcasting a first data packet;

7 is a schematic diagram showing a frame structure of a first data packet;

FIG. 8 is a flowchart of still another method for channel measurement and CS I feedback according to the embodiment; FIG. 9 is an information interaction diagram of the method for channel measurement and CS I feedback shown in FIG. 8; FIG. A time domain flow chart of the second data packet sent by the device; FIG. 11 is a schematic diagram of a frame structure of the second data packet;

12 is a time domain flow chart of the receiving device performing high-precision feedback;

Figure 13 is a time domain flow chart of the receiving device performing low precision feedback;

FIG. 14 is a schematic structural diagram of a sending device according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of another sending device according to the embodiment;

FIG. 16 is a schematic structural diagram of a receiving device according to an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of another receiving device according to the embodiment;

FIG. 18 is a schematic structural diagram of a computer according to an embodiment of the present invention;

FIG. 19 is a schematic structural diagram of a system for channel measurement and CS I feedback according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. In order to describe the subsequent embodiments more clearly, the application scenario of the embodiment is first described. The application scenario can be, but is not limited to, including: During the process of the communication between the sending device and the multiple receiving devices, the sending device can periodically broadcast the first data packet, for example, setting an air interface time-frequency resource, and the time-frequency resource can be used mainly for the sending device to broadcast the first data packet. The receiving device may measure the CS I of the designated device according to the received first data packet, and may send the measured CSI to the communicable device at the CS I feedback indication time after receiving the CSI feedback indication time sent by the sending device. . In the process of channel detection in the prior art, CS I measurement and CSI feedback binding, that is, CSI feedback is required every time the receiving device measures CSI, and a measurement and feedback CS I process needs to occupy a large amount of continuous air interface resources. , low flexibility, which in turn reduces system performance. In order to solve the above problem, the embodiment provides a method for channel measurement and CSI feedback, and the execution body of the method may be a sending device. As shown in FIG. 2, the method may include:

201. The sending device broadcasts a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures at least one specified device according to the training sequence and the identifier of the sending device.

CSI, at least one designated device may be a device to be measured preset by the system.

The receiving device may be a device that receives the training sequence and the identifier of the sending device. In the prior art, each time the transmitting device sends the training sequence and the identifier of the sending device to the receiving device, the receiving device can measure the designated device according to the training sequence and the identifier of the sending device.

CSI, CS I feedback is immediately after the CSI is measured, resulting in the problem that continuous measurement and feedback of CSI results in a large amount of continuous air interface resources. Therefore, in order to solve this problem, it is necessary to reduce the continuous air interface resources occupied when performing CS I measurement and feedback. For example, the measurement CS I and the feedback CSI can be performed independently, that is, the feedback is not immediately after the CSI is measured, which can reduce the continuous air interface resources occupied by a single time.

In this embodiment, the method for the broadcast device to broadcast the training sequence for the channel measurement and the identifier of the transmitting device is not limited, and may be set according to actual needs, and details are not described herein again.

202. The sending device sends a CS I feedback indication time to the receiving device, so that the receiving device sends at least one of the measured measurements to the sending device at the CSI feedback indication time. The CSI of the specified device.

The CS I feedback indication time may be other time than the time when the receiving device feeds CS I immediately after measuring CS I.

For example, if the receiving device measures the CSI at 7 o'clock, the CSI feedback indication time can be, but is not limited to, 7:01, or 7:02.

As an implementation manner of this embodiment, after the receiving device measures the corresponding CSI, the measured CSI is not immediately fed back to the sending device, and only after the receiving device receives the CSI feedback indication, the latest feedback is sent to the sending device. The resulting CSI is measured so that the CSI measurement step can be independent of the CSI feedback step.

It should be noted that, in this embodiment, the receiving device may also send the CSI to other communicable devices outside the execution body of the embodiment, and specifically, the other communicable devices are not limited, and are known to those skilled in the art, such as The device may include any device having a sending function and/or a receiving function, and may be, but not limited to, configured according to at least one specified device or may be set according to actual needs, and details are not described herein again.

After the foregoing solution, the sending device broadcasts a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CSI of at least one specified device according to the training sequence and the identifier of the sending device, where the receiving The device is a device that receives the training sequence and the identifier of the sending device; the sending device sends a CSI feedback indication time to the receiving device, so that the receiving device sends a measurement to the sending device at the CSI feedback indication time. At least one csi of the specified device. Compared with the prior art performing the feedback step immediately after performing the measurement step, that is, the receiving device receives the training sequence and the identification of the transmitting device and measures the designated device, compared to the binding of the measuring step and the feedback step. After the CSI, and sending the CSI to the sending device at the CSI feedback indicating time, the measuring step of the CSI and the feedback step are opened independently, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, Performing measurement and feedback steps using discrete air interface resources increases flexibility and increases system performance. This embodiment provides another method for channel measurement and CS I feedback. The method is a method for communicating the opposite side of the method shown in FIG. 2, and the execution subject is a receiving device. As shown in FIG. 3, the method may include:

301. The receiving device receives a training sequence for channel measurement broadcast by the transmitting device and an identifier of the sending device.

302. The receiving device measures, according to the training sequence and the identifier of the sending device, the CS I of the at least one designated device.

The method for measuring the CS I of the specified device by the receiving device is not limited, and is a technology that is well known to those skilled in the art, and can be set according to actual needs, and details are not described herein again.

303. The receiving device receives a CS I feedback indication time sent by the sending device.

In the prior art, each time the transmitting device broadcasts the training sequence and the identifier of the transmitting device to the receiving device, the receiving device can measure the CS I of any specified device according to the training sequence and the identifier of the transmitting device, and immediately after measuring CS I Performing CS I feedback results in the problem of performing CS I measurements and feedback resulting in a large amount of continuous air interface resources. Therefore, in order to solve this problem, it is necessary to reduce the continuous air interface resources used when performing CS I measurement and feedback. For example, the measurement CS I and the feedback CS I can be performed independently, that is, the feedback is not immediately after the CS I is measured, and only after the receiving device receives the CS I feedback indication time, the CS I is sent to the transmitting device.

304. The receiving device sends, to the sending device, the measured cs i of the at least one specified device at the CS I feedback indication time.

The receiving device transmits the measured CS I of the at least one designated device to the transmitting device or other communicable device, so that the transmitting device or other communicable device can perform subsequent operations according to the corresponding CS I. It can be seen that the communicable device can be any transmitting device or receiving device.

After the foregoing solution, the receiving device receives a training sequence for channel measurement broadcast by the sending device and an identifier of the sending device; and according to the training sequence and the identifier of the sending device And measuring the CS I of the at least one designated device; receiving the CS I feedback indication time sent by the sending device; and transmitting, to the sending device, the measured CS I of the at least one specified device at the CS I feedback indicating time. The receiving device receives the training sequence and the identity of the transmitting device and measures the designated device as compared with the prior art performing the feedback step immediately after performing the measuring step, that is, the binding of the measuring step and the feedback step. After the CS I, and sending the CS I to the sending device at the CS I feedback indicating time, the measuring step of the CS I is separated from the feedback step, so that a large number of consecutive air ports are not occupied at one time when performing the measuring step or the feedback step. Resources, which can use discrete air interface resources to perform measurement and feedback steps, increase flexibility and increase system performance. This embodiment provides a method for channel measurement and CS I feedback, which is a further extension and optimization of the method of FIG. 2 and FIG. 3, and the number of designated devices in this embodiment is 1, that is, the receiving device only Measures the CS I of a given device.

FIG. 4 is a flowchart of a method for channel detection provided by the embodiment, and FIG. 5 is an information interaction diagram of a method for channel detection provided by the embodiment.

Specifically, as shown in FIG. 4, this embodiment may include the following steps:

401. The sending device periodically broadcasts the first data packet.

The first data packet may include: a training sequence for channel measurement and an identifier of the transmitting device. The receiving device may be a receiving device that receives the first data packet, and the receiving device may measure the CS I of the designated device according to the received training sequence and the identifier of the transmitting device.

As an implementation manner of this embodiment, the sending device may broadcast the first data packet according to the natural period, and may specifically include: the sending device may broadcast the first data packet at the start time of the natural period, and then, according to the natural period The start position time and time offset value broadcasts the first data packet, that is, the first data packet is broadcast at the time when the integer position offset value is added at the start of the natural period.

In this embodiment, the method for the first device to broadcast the first data packet is not limited, and may be set according to actual needs, and details are not described herein again. The channel environment determines, for example, if the environment is in an outdoor environment or a fast-changing environment, the period of broadcasting the first data packet is small, and vice versa.

In this embodiment, the method for the broadcast device to broadcast the training sequence and the identifier of the sending device is not limited, and may be set according to actual needs. For example, the broadcast is performed in the form of a data packet as exemplified in this embodiment, and other manners are not described herein.

In the prior art, each time the transmitting device broadcasts the first data packet to the receiving device, the receiving device can measure the CSI of any specified device according to the training sequence and the identifier of the sending device, and immediately perform CSI feedback immediately after measuring the CSI. This leads to the problem that continuous measurement and feedback of CSI is performed, resulting in occupying a large amount of continuous air interface resources. Therefore, in order to solve this problem, it is necessary to reduce the continuous air interface resources occupied when performing CSI measurement and feedback. For example, the measurement CSI and the feedback CSI may be performed independently, that is, the feedback is not immediately after the CSI is measured; the step of transmitting the data to be transmitted by the transmitting device may be independent of the step of broadcasting the first data packet, that is, the sending device is not every time The first data packet is broadcast after the data to be transmitted is sent.

As an implementation manner of this embodiment, the measurement CSI period may be set to be longer than the period in which the transmitting device broadcasts the first data packet, thus avoiding performing a CSI measurement every time a first data packet is broadcasted.

In this embodiment, the value of the period in which the first data packet is broadcasted is not limited, and may be set according to actual needs, for example, it may be 20 ms or the like, and details are not described herein again.

A specific example is given below for a description of a broadcast packet broadcasting a first data packet. As shown in FIG. 6, in a WLAN (Wireless Local Access Network) system, an AP (Access Point) is used. The sending device, STA (Station), is an example of a receiving device.

AP a and AP b periodically broadcast the first data packet, and the first data packet may be an SP (Sounding Packet), that is, SPa, SPb. For SPs of different APs, the receiving device may pass specific data in the SP. The domain is distinguished. During the broadcast interval of the SP, the AP and the STA can also use the carrier sensing multiple access/col 1 is ion avoidance (CSMA/CA). Carrier sense multiple access/collision avoidance mechanism for normal communication. If the time-frequency air interface resource used for transmitting the SP is occupied by other data transmission according to the original transmission period, for example, the transmission position of the third SP of the APa is occupied by the data packet of the APb, then, after the data packet transmission of the APb is completed, the interval is separated. After PIFS (PCF inter frame space) (Point Coordination Function), the APA is sent to the SP, where DIFS is the DCF Distribution Coordination Fimct ion (Distribution Coordination Fimct ion) Ten to adjust the function).

402. The receiving device receives the first data packet broadcast by the sending device.

As an implementation manner of this embodiment, the first data packet may further include other information. For example, the first data packet is taken as an example of the SP. As shown in Figure 7, it is a schematic diagram of the frame structure of the SP. In the figure, the "SU NSTS" identifier is used in the VHT-SIG-A, which can be used to identify the number of subsequent VHT-LTFs, and can also be used to inform the STA that the SP can measure channel information of several space-time streams, that is, required The number of space-time streams detected. The STA can know which AP the SP is sent by parsing the "Partial BSSID" field, that is, the identifier of the sending device. Specifically, the STA can directly intercept the last 9 bits of the BSSID, or can calculate from the BSSID through a specific mathematical formula. . The "Sounding Packet" field can be used to identify whether the frame is an SP or another frame.

The method for obtaining the identifier of the AP that sends the SP by parsing the "Partial BSSID" field, and the specific mathematical formula are not limited, and are well-known to those skilled in the art, and can be set according to actual needs. Let me repeat.

It should be noted that the sending device may not periodically broadcast the first data packet, but after the transmitting device completes the configuration of the first data packet, the sending device only needs to restart when the channel measurement state of the designated device changes. The first data packet is reconfigured and sent. When the channel measurement status of the specified device does not change, the first data packet does not need to be configured and sent. This saves network air interface resources.

403. The sending device sends a second data packet to the receiving device.

The second data packet may include, but is not limited to, an identifier of the specified device and configuration domain information, so that the receiving device may be configured according to the first data packet and the designated device. The identifier and the configuration domain information measure CS I of the device corresponding to the identifier of the specified device. Further, the configuration field information may include: a time offset value of a time when the first data packet is broadcasted next time with respect to a natural period start position of the base station to which the sending device belongs, so that the receiving device according to the The time offset value is in an on state at the time when the first data packet is broadcasted next time, that is, the receiving device may be turned on only when the next time the first data packet is broadcasted according to the time offset value. The status is in a sleep state at other times, so that time-frequency resources can be saved. The inherent period may be a preset period, and the specific role has been described in the step 401, and details are not described herein again.

As an implementation manner of this embodiment, before the receiving device measures the CS I of the designated device according to the training sequence and the identifier of the sending device, the sending device may configure the designated device corresponding to the CS I to be measured by each receiving device, and determine the good device. The identifier of the specified device is added to the second data packet and then sent to the receiving device, so that the receiving device measures the device corresponding to the identifier of the specified device.

CS I.

In this embodiment, the method for sending the identifier of the specified device to the sending device is not limited, and may be set according to actual needs. For example, the sending manner is provided in the form of a data packet provided in this embodiment, and other manners are not described herein.

As an implementation manner of this embodiment, if the sending device needs to reconfigure the second data packet, after configuring the second data packet, the last configured second data packet may be updated to the last configured second data packet. package.

404. The receiving device receives the second data packet sent by the sending device.

405. The receiving device measures, according to the training sequence and the identifier of the sending device, a CS I of the designated device.

As an implementation manner of this embodiment, the training sequence may include: a short training sequence, a long training sequence, a pilot, and the like.

Further, the receiving device may, but is not limited to, measuring CS I according to the measurement period, or the receiving device may also, but not limited to, receive the first data packet broadcast by the transmitting device according to the measurement period, and may immediately after receiving the first data packet. Measure CS I. As an implementation manner of this embodiment, the receiving device, according to the training sequence and the identifier of the sending device, the CS I of the specified device may include:

The receiving device may first obtain the identifier of the designated device from the second data packet; and then measure the C S I of the designated device according to the training sequence and the identifier of the sending device.

406. The sending device sends a CS I feedback indication time to the receiving device, so that the receiving device sends the CSI of the measured designated device to the sending device at the CSI feedback indication time.

In this embodiment, the method for sending the CS I feedback indication time by the sending device is not limited, and may be set according to actual needs. For example, the sending device may add the CSI feedback indication time to the data packet and then send it to the receiving device, or may be other. The method will not be described here.

As an implementation manner of this embodiment, after the receiving device measures the corresponding CS I, the measured CS I is not immediately fed back to the sending device, but only after receiving the CSI feedback indicating time. Feedback CS I , thus achieving the separation of the CSI measurement steps from the CS I feedback step.

As an implementation manner of this embodiment, the receiving device may feed back CSI when the sending device sends data and needs CSI for beamforming, or when the CS I measured by the receiving device changes, and needs to be updated to the sending device. Feedback CS I.

As an implementation manner of this embodiment, in order to reduce the air interface resources used for performing CSI feedback, the receiving device may not perform feedback after each CS I measurement is performed, which may be after performing at least two CS I measurement steps. Perform CSI feedback.

As a preferred implementation manner of this embodiment, the time interval of the adjacent CS I feedback indication time may be greater than the period in which the transmitting device broadcasts the first data packet.

407. The receiving device receives a CSI feedback indication time sent by the sending device. 408. The receiving device sends the CSI to the sending device at the CSI feedback indication time.

409. The sending device receives the CSI sent by the receiving device.

After the foregoing solution, the sending device broadcasts a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CSI of the designated device according to the training sequence and the identifier of the sending device, where the receiving device is a device that receives the training sequence and the identifier of the sending device; the sending device sends a CSI feedback indication time to the receiving device, so that the receiving device sends the measurement designation to the sending device at the CSI feedback indication time The CSI of the device. Compared with the prior art performing the feedback step immediately after performing the measuring step, that is, the measuring step is combined with the feedback step, the receiving device receives the training sequence and the identifier of the transmitting device and measures the designated device. After the CSI, the CSI is sent to the sending device at the CSI feedback indication time, that is, the CSI measurement step and the feedback step are opened independently, so that a large number of consecutive air interface resources are not occupied at one time when performing the measurement step or the feedback step, that is, the Continuous air interface resources perform measurement steps and feedback steps, which increases flexibility and thus increases system performance. In addition, after the transmitting device finishes configuring the first data packet, the transmitting device only needs to perform channel measurement state of the specified device. When the change occurs, the first data packet reconfiguration needs to be re-configured, which avoids frequent configuration of the first data packet and saves air interface resources. In the prior art, when a user needs to perform channel detection frequently, data interaction between the sending device and the receiving device will occupy a large amount of air interface resources. Because each receiving device can only communicate with the sending device and the authentication device, because the device cannot communicate with the device, that is, the receiving device cannot identify multiple devices. The CSI performs measurements and feedback. In order to solve the above problems and the problems described in the background art, the present embodiment provides another method for channel measurement and CSI feedback, which is a further extension and optimization of the methods shown in FIG. 2 and FIG. 3; In the example, the number of specified devices is at least two.

FIG. 8 is a flowchart of a method for channel detection provided in this embodiment, and FIG. 9 is provided in this embodiment. Information interaction diagram of the method of channel detection provided.

Specifically, as shown in FIG. 8, the embodiment may include:

801. The sending device periodically broadcasts the first data packet, so that the receiving device measures the CS I of the designated device according to the training sequence and the identifier of the sending device.

In the prior art, each time the transmitting device broadcasts the first data packet to the receiving device, the receiving device can measure the CS I of any specified device according to the training sequence and the identifier of the transmitting device, and immediately perform CS after measuring CS I. The I feedback leads to the problem that continuous measurement and feedback of CS I results in a large amount of continuous air interface resources. Therefore, in order to solve this problem, it is necessary to reduce the continuous air interface resources occupied when performing CS I measurement and feedback. For example, the measurement CS I and the feedback CS I can be performed independently, that is, without feedback immediately after measuring CS I; the step of transmitting the data to be transmitted by the transmitting device can also be independent of the step of broadcasting the first data packet.

Specifically, the period of measuring CS I can be set to be larger than the period in which the transmitting device broadcasts the first data packet, thus avoiding performing CS I measurement every time a first data packet is broadcasted.

In this embodiment, the value of the period in which the first data packet is broadcasted and the value of the period of the measurement CS I are not limited, and may be set according to actual needs. For example, it may be 20 ms or the like, and details are not described herein.

802. The receiving device receives a first data packet periodically broadcast by the sending device.

This embodiment does not describe the specific frame structure of the first data packet, and has been described in step 402.

It should be noted that the sending device may not periodically broadcast the first data packet, but after the transmitting device completes the configuration of the first data packet, the sending device only needs to restart when the channel measurement state of the designated device changes. The first data packet is reconfigured and sent. When the channel measurement status of the specified device does not change, the first data packet does not need to be configured and sent. This saves network air interface resources. 803. The sending device sends a second data packet to the receiving device.

The second data packet may include, but is not limited to, including: identifier and configuration domain information of the at least one designated device, so that the receiving device may be configured according to the identifier of the first data packet and the at least one specified device, and The configuration domain information measures the CS I of the device corresponding to the identifier of the at least one specified device.

Further, the configuration field information may include: a time offset value of a time when the first data packet is broadcasted next time with respect to a natural period start position of the base station to which the sending device belongs, so that the receiving device according to the The time offset value is in an on state at the time when the first data packet is broadcasted next time, that is, the receiving device may be turned on only when the next time the first data packet is broadcasted according to the time offset value. The status is in a sleep state at other times, so that time-frequency resources can be saved. The natural period may be a preset period, and the specific function has been described in the step 401, and details are not described herein again.

Further, the configuration domain information may further include: first information, where the first information is used to indicate whether the at least one designated device is a first type device or a second type device, so that the connected CS I is The first type of device is a device that performs data transmission with the receiving device, and may be referred to as a signal device, where the second type device generates a signal to the receiving device when sending a signal to other devices except the receiving device. A device that interferes with it can be called an interference device.

Further, if the number of the specified devices is at least two, the number of the configuration domain information is equal to the number of the at least one specified device, and is a corresponding relationship, or the number of the configuration domain information is equal to Specifies the number of device collections, and is the corresponding relationship. The specified device set may be a device set composed of at least two devices.

Specifically, if the receiving device needs to measure the CS I of the designated device 1 and the designated device 2, the second data packet may include: a first data packet configuration domain 1 corresponding to the designated device 1, and a first corresponding to the designated device 2 Packet configuration field 2.

The following is an example of the step of transmitting a second data packet to the receiving device by the sending device. The following is an example in which the AP is the sending device and the STA is the receiving device. As shown in FIG. 10, after the STA accesses the AP, the AP sends the identifier of the designated AP of the configured STA to the STA through the second data packet in the idle time, that is, the specified device is configured through the second data packet. The identifier is sent to the STA; the STA sends an ACK response to the AP after receiving the second data packet; when the AP needs to update the designated AP, the AP may also send the second data packet including the updated designated AP to the STA again.

This embodiment is not only applicable to the examples listed above, but also applicable to other examples, and details are not described herein again.

As an implementation manner of this embodiment, as shown in FIG. 11, if the second data packet is a frame structure diagram of the SP, the frame structure is extended on the existing 11 protocol function frame (Action Frame). The area of the underscore character is the newly defined data field, which can be used to indicate the configuration of the SP. Wherein, "3 Sounding Conf ig" is used to indicate that the frame is an SP configuration frame; "Partial BSSID" is similar to the "Partial BSSID" data field in the frame structure of the SP shown in FIG. 7; "Interference Indication" is used to indicate transmission Whether the AP of the SP is a signal AP or an interference AP; "SP Period" indicates the period during which the SP is transmitted.

When the STA needs to measure the CSI of multiple designated APs, the SP may include multiple configuration information corresponding to the specified AP, or "sounding Packet Configuration" i or , to set the configuration information of each SP.

In this embodiment, the content included in the first data packet and the content included in the management frame are not limited, and may be set according to actual needs, and details are not described herein again.

804. The receiving device receives the sending device and sends the second data packet.

805. The receiving device measures, according to the training sequence and the identifier of the sending device, a CSI of at least one specified device.

In order to implement joint channel detection of the receiving device for at least two designated devices, the transmitting device needs to instruct the receiving device to simultaneously measure the CSI of at least two designated devices.

This embodiment is not limited to the method for the receiving device to measure the CSI of the specified device, and is well-known to those skilled in the art, and can be set according to actual needs, and details are not described herein again.

806. The sending device sends a CSI feedback indication time to the receiving device, so that The receiving device sends the measured CSI of the at least one specified device to the sending device at the CSI feedback indication time.

As an implementation manner of this embodiment, after the receiving device measures the corresponding CSI, the measured CSI is not immediately fed back to the sending device, but only after receiving the CSI feedback indicating time, the CSI is fed back to the sending device. In this way, the measurement steps of the CSI are implemented independently of the feedback steps of the CSI.

As an implementation manner of this embodiment, the receiving device may feed back CSI when the sending device sends data and needs CSI for beamforming, or when the CSI measured by the receiving device changes, and needs to update to the sending device. CSI.

As an implementation manner of this embodiment, in order to reduce the air interface resources used for performing CSI feedback, the receiving device may not perform feedback after performing CSI measurement every time, and may perform CSI after performing at least two CSI measurement steps. Feedback.

As a preferred implementation manner of this embodiment, the time interval of the adjacent CSI feedback indication time may be greater than the period in which the transmitting device broadcasts the first data packet.

807. The receiving device receives a CSI feedback indication time sent by the sending device.

808. The receiving device sends the measured CSI of the at least one specified device to the sending device according to the first information and using different sending manners according to the CSI feedback indication time.

The first information is described in step 803 and will not be described again.

Further, if the CSI received by the sending device is the measured CSI of the first type of device, sending the measured CSI of the at least one specified device to the sending device at the CSI feedback indication time may include:

And transmitting, by the CSI feedback indicating time, the measured CSI of the first type of device to the sending device by using a high-precision transmission mode;

If the CSI received by the sending device is the measured CSI of the second type of device, sending the measured CSI of the at least one specified device to the sending device at the CSI feedback indication time, Includes:

And transmitting, by the CSI feedback indicating time, the measured CSI of the second type of device to the sending device by using a low-precision transmission mode. For example, only the covariance matrix is fed back.

Specifically, if the CSI received by the sending device is the measured CSI of the first type of device, the high-precision sending mode needs to be used for feedback, and may be used for multiple access point joint sending or

In MU-MIM0.

For example, as shown in FIG. 12, for STA2, both APa and APb are signal APs. Therefore, when STA2 receives a CSI feedback request from APb, STAa feeds back the corresponding compressed CSI information according to the requirements of llac. . Since the existing compressed CSI information does not include the amplitude and phase information between the APs, the feedback including the channel association information between the APs can also be sent to the transmitting device.

The STA may, but is not limited to, obtain the inter-AP channel association information value according to the following method:

Where VI and V2 are the right singular value matrices of the channel matrices HI and H2 of APa and APb to STA2, respectively, and HI and H2 can be obtained according to the first data packet; is the right singular value matrix of the tandem matrix [ ^Η ι, ^Η ² ] The matrix A is a diagonal matrix, where each non-zero diagonal element is the amplitude and phase difference of the corresponding spatial stream between the signals AP.

The method for obtaining the channel association information between the APs and the receiving device is not limited, and is a technology well known to those skilled in the art, and can be set according to actual needs, and details are not described herein.

Further, if the CSI received by the transmitting device is the measured CSI of the second type of device, the transmitting device may perform a cooperative beamforming operation according to the received CSI.

If the CSI received by the transmitting device is the measured CSI of the second type of transmitting device, the accuracy requirement for the CSI is not very high, so the accuracy of the feedback can be reduced. For example, the CSI may be fed back for a wider frequency band, or only channel statistics such as the covariance matrix of the interference may be fed back.

For example, as shown in FIG. 13, for STA1, APa is a signal AP, and therefore, Llac feeds back the transmitted TxBF (Transmit Beamforming) to the APa, and the APb interferes with the AP for STA1. Therefore, only a summary CSI can be fed back to the APa, such as a covariance matrix.

This embodiment is not limited to the method in which the receiving device sends the C S I to the sending device in the C S I feedback indicating time, and may be set according to actual needs, and details are not described herein again.

809. The sending device receives the CSI sent by the receiving device.

Further, if the CSI received by the transmitting device is the measured CSI of the first type of device, the transmitting device may perform a joint beamforming operation according to the received CSI.

The sending device needs to perform the joint beamforming. Therefore, the sending device further needs to receive the second information sent by the receiving device, where the second information includes at least one of the following information: channel information between the first type of devices. Phase difference information, power difference information between channel information between the first type of devices; the transmitting device may perform according to at least one of the phase difference information and the power difference information and the received CSI Combined beamforming.

This embodiment is not limited to the method in which the transmitting device performs the cooperative beamforming operation according to the received CSI, and is a technology well known to those skilled in the art, and details are not described herein again.

After the foregoing solution, the sending device broadcasts a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CSI of at least one specified device according to the training sequence and the identifier of the sending device, where the receiving The device is a device that receives the training sequence and the identifier of the sending device; the sending device sends a CSI feedback indication time to the receiving device, so that the receiving device sends a measurement to the sending device at the CSI feedback indication time. At least one CSI of the specified device. Compared with performing the feedback step immediately after performing the measuring step in the prior art, that is, performing the binding of the measuring step and the feedback step, the receiving device receives the CSI of the specified receiving device after receiving the first data packet, and The CSI is sent to the sending device at the CSI feedback indicating time, that is, the measuring step of the CSI is separated from the feedback step, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, the discontinuous air interface can be used. The resource performs measurement steps and feedback steps, which increases flexibility and increases system performance. In addition, after the sending device finishes configuring the first data packet, the sending device It is only necessary to re-configure the first data packet when the channel measurement status of the specified device changes, which avoids frequent configuration of the first data packet and saves air interface resources. In this embodiment, The first data packet configuration field corresponding to the multiple specified devices is added to the second data packet, so that the receiving device measures the CSI of the multiple specified devices. Embodiments of virtual devices are provided below, the embodiments of which correspond to the respective method embodiments described above. The device embodiment may include: a sending device and a receiving device. This embodiment provides a sending device, as shown in FIG. 14, which may include:

The broadcast unit 141 is configured to broadcast a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CS I of the at least one specified device according to the training sequence and the identifier of the sending device, where the receiving device a device that receives the training sequence and the identity of the transmitting device;

The first sending unit 142 is configured to send a CSI feedback indication time to the receiving device, so that the receiving device sends the measured CS I of the at least one designated device to the sending device at the CS I feedback indication time.

In the prior art, each time the sending device sends the training sequence and the identifier of the sending device to the receiving device, the receiving device can measure the CSI of any specified device according to the training sequence and the identifier of the sending device, and immediately perform CS after measuring the CSI. The I feedback leads to the problem that the continuous measurement and feedback of the CSI results in occupying a large amount of continuous air interface resources. Therefore, in order to solve this problem, it is necessary to reduce the continuous air interface resources occupied when performing CS I measurement and feedback. For example, the measurement CS I and the feedback CSI can be performed independently, that is, the feedback is not immediately after the CSI is measured, which can reduce the continuous air interface resources occupied by a single time.

The CSI feedback indication time may be other time than the time when the receiving device feeds CS I immediately after measuring CS I.

After using the above scheme, the broadcast unit is used to broadcast a training sequence and a program for channel measurement. Determining, by the receiving device, the CSI of the at least one designated device according to the training sequence and the identifier of the sending device, where the receiving device is a device that receives the training sequence and the identifier of the sending device; a first sending unit, configured to send to the receiving device

The CSI feedback indicates time so that the receiving device transmits the measured CSI of the at least one designated device to the transmitting device at the CSI feedback indication time. Compared with the prior art performing the feedback step immediately after performing the measurement step, that is, after the measurement step is combined with the feedback step, the receiving device receives the first packet to measure the CSI of the specified receiving device. And sending the CSI to the sending device at the CSI feedback indicating time, that is, the measuring step of the CSI and the feedback step are independent, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, the discontinuous one can be used. The air interface resource performs measurement steps and feedback steps, which increases flexibility and increases system performance. This embodiment provides another type of sending device, which is a further extension and optimization of the sending device shown in FIG. 14. As shown in FIG.

The broadcast unit 151 is configured to broadcast a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CSI of the at least one specified device according to the training sequence and the identifier of the sending device, where the receiving device is a device that receives the training sequence and the identity of the transmitting device;

The first sending unit 152 is configured to send a CSI feedback indication time to the receiving device, so that the receiving device sends the measured CSI of at least one designated device to the sending device at the CSI feedback indication time.

Further, the sending device provided in this embodiment further includes:

The second sending unit 153 is configured to send, to the receiving device, an identifier of the at least one specified device, so that the receiving device measures, according to the training sequence and the identifier of the sending device, the identifier of the at least one designated device. The CSI of the device.

Further, the broadcasting unit 151 is specifically configured to broadcast the first data packet, where the first data packet includes: the training sequence and an identifier of the sending device; The second sending unit 153 is specifically configured to send a second data packet to the receiving device, where the second data packet includes: identifier and configuration domain information of the at least one designated device, so that the receiving device is configured according to the Determining, by the first data packet, an identifier of the at least one designated device and the configuration domain information measuring a CS I of the device corresponding to the identifier of the at least one specified device;

The configuration field information includes: a time offset value of a time when the first data packet is broadcasted next time with respect to a natural period start position of the base station to which the sending device belongs, so that the receiving device according to the time offset value The time when the first data packet is broadcasted next time is in an on state.

Further, the configuration field information further includes: first information, where the first information is used to indicate whether the at least one designated device is a first type device or a second type device, so that the receiving device uses different manners Transmitting, by the sending device, the measured CS I of the at least one specified device; the first type of device is a device that performs data transmission with the receiving device, and the second type of device is other than the receiving device A device that interferes with the receiving device when the other device transmits a signal.

Further, the sending unit provided in this embodiment may further include:

The receiving unit 154 is configured to: if the received CS I is the measured CS I of the first type of device, receive the second information sent by the receiving device, where the second information includes at least the following information An item: phase difference information between channel information between the first type of devices, and power difference information between channel information between the first type of devices;

The processing unit 155 is configured to perform joint beamforming according to at least one of the phase difference information and the power difference information and the received CS I.

Further, if the number of the specified devices is at least two, the number of the configuration domain information is equal to the number of the at least one specified device, and is a corresponding relationship, or the number of the configuration domain information is equal to Specifies the number of device collections, and is the corresponding relationship.

After the foregoing solution, the broadcast unit is configured to broadcast a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures the CS I of the at least one specified device according to the training sequence and the identifier of the sending device. Receiving the training sequence and the receiving device a device that sends an identifier of the device; a first sending unit, configured to send to the receiving device

The CSI feedback indicates time so that the receiving device transmits the measured CSI of the at least one designated device to the transmitting device at the CSI feedback indication time. Compared with the prior art performing the feedback step immediately after performing the measurement step, that is, the binding of the measurement step and the feedback step, the receiving device receives the CSI of the specified receiving device after receiving the first data packet, and The CSI is sent to the sending device at the CSI feedback indicating time, that is, the measuring step of the CSI is separated from the feedback step, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, the discontinuous air port can be used. The resource performs measurement steps and feedback steps, which increases flexibility and increases system performance. In addition, after the transmitting device finishes configuring the first data packet, the sending device only needs to change the channel measurement state of the specified device. The first data packet re-configuration needs to be re-configured to avoid the frequent configuration of the first data packet, and the air interface resource is saved. In this embodiment, by adding a plurality of designated devices in the second data packet. The first packet configuration field implements the C of the receiving device to measure multiple designated devices. SI. The embodiment provides a receiving device, as shown in FIG. 16, which may include:

The first receiving unit 161 is configured to receive, by the sending device, a training sequence for channel measurement and an identifier of the sending device.

The measuring unit 162 is configured to measure, according to the training sequence and the identifier of the sending device, a CSI of at least one designated device;

The second receiving unit 163 is configured to receive a CSI feedback indication time sent by the sending device, where the first sending unit 164 is configured to send, to the sending device, the CSI of the measured at least one specified device at the CSI feedback indication time.

The receiving device sends the measured CSI of the at least one specified device to the transmitting device or other communicable device, so that the transmitting device or other communicable device can perform subsequent operations according to the corresponding CSI. It can be seen that the communicable device can be any transmitting device or receiving device. After the foregoing solution, the first receiving unit is configured to receive, by the sending device, a training sequence for channel measurement and an identifier of the sending device, where the measuring unit is configured to use, according to the training sequence, the identifier of the sending device Measure a CSI of the at least one specified device; a second receiving unit, configured to receive a CSI feedback indication time sent by the sending device, where the first sending unit is configured to send at least one of the measured measurements to the sending device at the CSI feedback indication time The CSI of a specified device. The receiving device receives the training sequence and the identity of the transmitting device and measures the designated device as compared with the prior art performing the feedback step immediately after performing the measuring step, that is, the binding of the measuring step and the feedback step. After the CSI, and sending the CSI to the sending device at the CSI feedback indicating time, the measuring step of the CSI and the feedback step are opened independently, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, Performing measurement and feedback steps using discrete air interface resources increases flexibility and increases system performance. This embodiment provides another receiving device, which is a further extension of the receiving device shown in FIG. 16, as shown in FIG.

The first receiving unit 171 is configured to receive, by the sending device, a training sequence for channel measurement and an identifier of the sending device.

The measuring unit 172 is configured to measure, according to the training sequence and the identifier of the sending device, a CSI of at least one designated device;

The second receiving unit 173 is configured to receive a CSI feedback indication time sent by the sending device, where the first sending unit 174 is configured to send, to the sending device, the CSI of the measured at least one specified device at the CSI feedback indication time.

Further, the receiving device provided in this embodiment may further include:

The third receiving unit 175 is configured to receive, after the CSI of the at least one specified device is measured according to the training sequence and the identifier of the sending device, the identifier of the at least one designated device sent by the sending device;

The measuring unit 172 is specifically configured to: according to the training sequence and the label of the sending device The CSI of the device corresponding to the identifier of the at least one specified device is measured.

Further, the first receiving unit 171 is specifically configured to receive a first data packet that is sent by the sending device, where the first data packet includes: a training sequence and an identifier of the sending device; 175. The method is specifically configured to receive the second data packet that is sent by the sending device, where the second data packet includes: the identifier and the configuration domain information of the at least one specified device. a first data packet and an identifier of the at least one designated device and the configuration domain information measuring a CS I of the device corresponding to the identifier of the at least one specified device;

Further, the configuration domain information further includes: first information, where the first information is used to indicate whether the at least one designated device is a first type device or a second type device, and the first type device is Receiving, by the device, a device for performing data transmission, where the second type of device is a device that generates interference to the receiving device when transmitting a signal to other devices than the receiving device;

The first sending unit 174 is specifically configured to send, according to the first information, the CS I of the measured at least one designated device to the sending device according to the CS I feedback indication time in a different manner.

Further, the first sending unit 174 is specifically configured to: when the CS I feedback indicates a time, send the measured CS I of the first type of device to the sending device by using a high-precision transmission mode; The CS I feedback indicates the time, and sends the measured CS I of the second type of device to the transmitting device in a low-precision transmission mode.

Further, the receiving device provided in this embodiment may further include:

The second sending unit 176 is configured to: if the CS I is the measured CS I of the first type of device, send the second information to the sending device, where the second information includes at least one of the following information. : phase difference information between channel information between the first type of devices, and the first type of device Power difference information between channel information, so that the transmitting device performs joint beamforming according to at least one of the phase difference information and the power difference information and the received CS I.

After the foregoing solution, the first receiving unit is configured to receive, by the sending device, a training sequence for channel measurement and an identifier of the sending device, where the measuring unit is configured to use, according to the training sequence, the identifier of the sending device Measure a CSI of the at least one specified device; a second receiving unit, configured to receive a CSI feedback indication time sent by the sending device, where the first sending unit is configured to send at least one of the measured measurements to the sending device at the CSI feedback indication time The CSI of a specified device. Compared with the prior art performing the feedback step immediately after performing the measuring step, that is, the receiving device is configured to bind the measurement step and the feedback step, the receiving device receives the CSI of the specified receiving device after receiving the first data packet, and The CSI is sent to the sending device at the CSI feedback indicating time, that is, the measuring step of the CSI is separately opened from the feedback step, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, the discontinuous air interface can be used. The resource performs measurement steps and feedback steps, which increases flexibility and increases system performance. In addition, after the transmitting device finishes configuring the first data packet, the transmitting device only needs to change the channel measurement state of the specified device. The first data packet reconfiguration needs to be re-configured to avoid the frequent configuration of the first data packet, which saves air interface resources. In this embodiment, by adding a plurality of designated devices in the configuration second data packet. Corresponding the first data packet configuration field, the receiving device measures the CSI of the multiple specified devices. An embodiment of a physical device is provided below, which may correspond to the corresponding method embodiments provided above. The embodiment also provides a computer 1. As shown in FIG. 18, the computer 1 includes: at least one processor 15, such as a CPU (Central Processing Unit). At least one output interface 16 or other user interface 17, memory 18, at least one communication bus 19. Communication bus 19 is used to implement connection communication between these components. The computer 1 optionally includes other user interfaces 17, including a display, a keyboard or a pointing device (e.g., a mouse, trackball, touchpad or tactile display). The memory 18 may include a high speed RAM (random access memory), and may also include a non-volatile memory such as at least one disk memory. The memory 18 can optionally include at least one storage device located remotely from the aforementioned processor 15.

In some embodiments, memory 18 stores the following elements, executable modules or data structures, or a subset thereof, or their extension set:

Operating system 180, which contains various system programs for implementing various basic services and handling hardware-based tasks.

The application 181, which contains various applications, is used to implement various application services.

The application 181 can be applied to the transmitting device. If the application 181 is applied to the transmitting device, the application 181 can include, but is not limited to, including:

Further, the application 181 can also include:

a second sending unit, configured to send, to the receiving device, an identifier of the at least one specified device, so that the receiving device measures, according to the training sequence and the identifier of the sending device, the identifier of the at least one specified device The CSI of the device.

Further, the broadcast unit is specifically configured to broadcast a first data packet, where the first data packet includes: the training sequence and an identifier of the sending device; The second sending unit is specifically configured to send a second data packet to the receiving device, where the second data packet includes: identifier and configuration domain information of the at least one designated device, so that the receiving device is configured according to the a first data packet and an identifier of the at least one specified device and the configuration domain information measuring a CS I of the device corresponding to the identifier of the at least one specified device;

Further, the configuration field information further includes: first information, where the first information is used to indicate whether the at least one designated device is a first type device or a second type device, so that the receiving device uses different manners Transmitting, by the sending device, the measured at least one specified device

The first type of device is a device that performs data transmission with the receiving device, and the second type of device generates interference to the receiving device when sending a signal to other devices except the receiving device. device.

Further, the application 181 can also include:

a receiving unit, configured to receive second information sent by the receiving device, where the received CS I is a measured CS I of the first type of device, where the second information includes at least one of the following information Item: phase difference information between channel information between the first type of devices, and power difference information between channel information between the first type of devices;

And a processing unit, configured to perform joint beamforming according to at least one of the phase difference information and the power difference information and the received CS I.

Further, if the number of the specified devices is at least two, the number of the configuration domain information is equal to the number of the at least one specified device, and is a corresponding relationship, or the number of the configuration domain information is equal to Specifies the number of device collections, and is the corresponding relationship. The application 181 can also be applied to the receiving device. If the application 181 is applied to the receiving device, the application 181 can include, but is not limited to, including: a first receiving unit, configured to receive a training sequence for channel measurement broadcast by the sending device, and an identifier of the sending device;

a measuring unit, configured to measure CS I of at least one specified device according to the training sequence and the identifier of the sending device;

a second receiving unit, configured to receive a CS I feedback indication time sent by the sending device, where the first sending unit is configured to send, to the sending device, the measured CSI of the at least one specified device at the CSI feedback indication time.

Further, the application 181 can also include:

a third receiving unit, configured to receive an identifier of the at least one designated device that is sent by the sending device, before the CSI of the at least one specified device is measured according to the training sequence and the identifier of the sending device;

The measuring unit is configured to measure a CSI of the device corresponding to the identifier of the at least one specified device according to the training sequence and the identifier of the sending device.

Further, the first receiving unit is specifically configured to receive a first data packet that is sent by the sending device, where the first data packet includes: a training sequence and an identifier of the sending device;

The third receiving unit is configured to receive a second data packet that is sent by the sending device, where the second data packet includes: identifiers and configuration domain information of the at least one designated device;

The measuring unit is specifically configured to measure, according to the identifier of the first data packet and the at least one designated device, and the configuration domain information, a CSI of a device corresponding to the identifier of the at least one designated device;

Further, the configuration domain information further includes: first information, where the first information is used to indicate whether the at least one designated device is a first type device or a second type device, and the first type device is Receiving a device for data transmission, the second type of device is When the other device sends a signal, the device that generates interference to the receiving device; the first sending unit is specifically configured to use the different information according to the first information.

The CSI feedback indicates that the CSI of the measured at least one designated device is sent to the transmitting device.

Further, the first sending unit is specifically configured to: when the CSI feedback indication time is used, send the measured CS I of the first type of device to the sending device by using a high-precision transmission mode; The feedback indicates the time, and the measured CS I of the second type of device is sent to the sending device by using a low-precision transmission mode.

Further, the application 181 can also include:

a second sending unit, configured to: if the CSI is the measured CS I of the first type of device, send the second information to the sending device, where the second information includes at least one of the following information: Phase difference information between channel information between the first type of devices, and power difference information between channel information between the first type of devices, so that the transmitting device is configured according to the phase difference information and the power difference information At least one of the received CSIs and the received CSI are jointly beamformed.

Further, if the number of the specified devices is at least two, the number of the configuration domain information is equal to the number of the at least one specified device, and is a corresponding relationship, or the number of the configuration domain information is equal to Specifies the number of device collections, and is the corresponding relationship. In the embodiment of the present invention, when the computer 1 is a transmitting device, by calling a program or an instruction stored in the memory 18, the processor 15 is configured to:

Broadcasting a training sequence for channel measurement and an identification of the transmitting device, so that the receiving device measures CS I of at least one designated device according to the training sequence and the identifier of the transmitting device, and the receiving device receives the training a sequence and a device of the identity of the transmitting device;

Sending a CS I feedback indication time to the receiving device, so that the receiving device sends the measured CS I of the at least one designated device to the sending device at the CSI feedback indication time.

Further, the processor 15 is further configured to: if the communicable device is a sending device, receive the CS I sent by the receiving device. Further, the processor 15 is further configured to send, to the receiving device, an identifier of the at least one specified device, so that the receiving device measures, according to the training sequence and the identifier of the sending device, the at least one designated device. Identifies the CSI of the corresponding device.

Further, the processor 15 is specifically configured to broadcast the first data packet, where the first data packet includes: the training sequence and an identifier of the sending device;

Sending, to the receiving device, a second data packet, where the second data packet includes: identifier and configuration domain information of the at least one specified device, so that the receiving device is configured according to the first data packet and the at least one The identifier of the device and the configuration domain information are used to measure the CS I of the device corresponding to the identifier of the at least one specified device;

Further, the configuration field information further includes: first information, where the first information is used to indicate whether the at least one designated device is a first type device or a second type device, so that the receiving device uses different manners Transmitting, by the sending device, the measured CS I of the at least one specified device; the first type of device is a device that performs data transmission with the receiving device, and the second type of device is other than the receiving device A device that interferes with the receiving device when the other device transmits a signal. The CS I of at least one of the specified devices is specifically:

And transmitting, by the high-precision transmission mode, the CS I of the first-type device to the sending device, and further, the processor 15 is further configured to: if the received CS I is the measured first-class device Receiving the second information sent by the receiving device, where the second information includes at least one of the following information: phase difference information between channel information between the first type of devices, the Power difference information between channel information between a class of devices; Performing joint beamforming based on at least one of the phase difference information and the power difference information and the received CS I.

Further, if the number of the specified devices is at least two, the number of the configuration domain information is equal to the number of the at least one specified device, and is a corresponding relationship, or the number of the configuration domain information is equal to Specifies the number of device collections, and is the corresponding relationship. In the embodiment of the present invention, when the computer 1 is a receiving device, the processor 15 can also be used to: by calling a program or an instruction stored in the memory 18.

Receiving, by the transmitting device, a training sequence for channel measurement and an identifier of the transmitting device;

Measuring at least one designated device according to the training sequence and the identifier of the transmitting device

CS I ;

Receiving a CS I feedback indication time sent by the sending device;

Transmitting, by the CS I feedback indicating time, the measured CS I of the at least one designated device to the transmitting device.

Further, the processor 15 is further configured to: before the measuring the CS I of the at least one designated device according to the training sequence and the identifier of the sending device, receiving the identifier of the at least one specified device sent by the sending device ;

The processor 15 is configured to measure, according to the training sequence and the identifier of the sending device, a CS I of the device corresponding to the identifier of the at least one specified device.

Further, the processor 15 specifically receives the first data packet that is broadcast by the sending device, where the first data packet includes: a training sequence and an identifier of the sending device;

Receiving, by the sending device, the second data packet, where the second data packet includes: identifier and configuration domain information of the at least one designated device;

And measuring, according to the identifier of the first data packet and the at least one specified device, and the configuration domain information, a C S I of the device corresponding to the identifier of the at least one specified device;

The configuration domain information includes: a time when the first data packet is broadcasted next time relative to the Transmitting, by the receiving device, a time offset value of a natural period start position of the base station to which the device belongs, so that the receiving device is in an on state according to the time offset value at the time when the first data packet is broadcasted next time.

The processor 15 is configured to send, according to the first information, the CS I of the measured at least one designated device to the sending device at the CS I feedback indication time in a different manner.

Further, the processor 15 is configured to: in the CS I feedback indicating time, send the measured C S I of the first type of device to the sending device by using a high-precision transmission mode;

And transmitting, by the CSI feedback indicating time, the measured CSI of the second type of device to the sending device by using a low-precision transmission mode.

Further, the processor 15 is further configured to: if the CSI is the CSI of the first type of device that is measured, send the second information to the sending device, where the second information includes at least one of the following information. Item: phase difference information between channel information between the first type of devices, and power difference information between channel information between the first type of devices, so that the sending device according to the phase difference information and the At least one of the power difference information and the received CS I are jointly beamformed.

After the foregoing solution, the sending device broadcasts a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CSI of at least one specified device according to the training sequence and the identifier of the sending device, and the receiving The device is a device that receives the training sequence and the identifier of the sending device; the sending device sends a CSI feedback indication time to the receiving device, so that the receiving device sends a measurement to the sending device at the CSI feedback indication time. of At least one csi of the specified device. Compared with performing the feedback step immediately after performing the measuring step in the prior art, that is, performing the binding of the measuring step and the feedback step, the receiving device receives the CSI of the specified receiving device after receiving the first data packet, and The CSI is sent to the sending device at the CSI feedback indicating time, that is, the measuring step of the CSI is separated from the feedback step, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, the discontinuous air interface can be used. The resource performs measurement steps and feedback steps, which increases flexibility and increases system performance. In addition, after the transmitting device finishes configuring the first data packet, the sending device only needs to change the channel measurement state of the specified device. The first data packet re-configuration needs to be re-configured to avoid frequent configuration of the first data packet, which saves air interface resources. In this embodiment, by adding a plurality of designated devices in the second data packet. The first packet configuration field implements the receiving device to measure CSI of a plurality of designated devices. System embodiments are provided below, which may be corresponding to the corresponding method and apparatus embodiments provided above. The system for providing channel measurement and CSI feedback, as shown in FIG. 19, may include:

a transmitting device 191, configured to broadcast a training sequence for channel measurement and an identifier of the sending device 191, where the receiving device 192 is a device that receives the training sequence and the identifier of the sending device 191; The device 192 sends a CSI feedback indication time;

a receiving device 192, configured to receive the training sequence broadcast by the sending device 191 and an identifier of the sending device 191; and measure CSI of at least one specified device according to the training sequence and the identifier of the sending device 191; The CSI feedback indication time sent by the sending device 191 is sent to the transmitting device 191 at the CSI feedback indication time to transmit the CSI of the measured at least one specified device.

Further, the sending device 191 is further configured to send, to the receiving device 192, an identifier of the at least one designated device; The receiving device 192 is further configured to receive an identifier of the at least one specified device that is sent by the sending device 191, and measure, according to the training sequence and the identifier of the sending device 191, the identifier of the at least one specified device. CS I of the device.

Further, the sending device 191 is specifically configured to broadcast a first data packet, where the first data packet includes: the training sequence and an identifier of the sending device 191; and sends a second data packet to the receiving device 192. The second data packet includes: identifier and configuration domain information of the at least one designated device;

The receiving device 192 is specifically configured to receive a first data packet that is sent by the sending device 191, and receive a second data packet that is sent by the sending device 191, according to the first data packet and the at least one designated device. The identifier and the configuration domain information measure CS I of the device corresponding to the identifier of the at least one specified device;

The configuration field information includes: a time offset value of a time when the first data packet is broadcasted next time with respect to a natural period start position of the base station to which the sending device 191 belongs, so that the receiving device 192 according to the time offset The shift value is in an on state at the time when the first data packet is broadcasted next time.

Further, the configuration domain information further includes: first information, where the first information is used to indicate that the at least one designated device is a first type device or a second type device, so that the CS I of the receiving device is The first type of device is a device that performs data transmission with the receiving device 192, and the second type of device is a device that interferes with the receiving device 192 when sending a signal to other devices than the receiving device 192. .

Further, the receiving device 192 is specifically configured to: when the CS I feedback indicates a time, send the measured CS I of the first type of device to the sending device 191 by using a high-precision transmission mode; The I feedback indicates the time, and the measured CS I of the second type of device is transmitted to the transmitting device 191 in a low-precision transmission mode.

Further, the sending device 191 is further configured to receive the second information that is sent by the receiving device 192, where the second information includes at least one of the following information: Phase difference information between channel information, power difference information between channel information between the first type of devices; and at least one of the phase difference information and the power difference information and the received CSI Perform joint beamforming;

The receiving device 192 is further configured to send the second information to the sending device 191.

After the foregoing solution, the sending device broadcasts a training sequence for channel measurement and an identifier of the sending device, so that the receiving device measures CS I of the at least one designated device according to the training sequence and the identifier of the sending device, The receiving device is a device that receives the training sequence and the identifier of the sending device; the sending device sends a CSI feedback indication time to the receiving device, so that the receiving device sends the CSI feedback indication time to the sending device. Measured CS I of at least one specified device. Compared with the prior art performing the feedback step immediately after performing the measurement step, that is, after the measurement step is combined with the feedback step, the receiving device receives the CS I of the specified receiving device after receiving the first data packet. And sending the CSI to the sending device at the CSI feedback indicating time, that is, the measuring step of the CSI and the feedback step are independent, so that a large number of consecutive air interface resources are not occupied at one time when performing the measuring step or the feedback step, that is, the discontinuous one can be used. The air interface resource performs the measurement step and the feedback step, which increases the flexibility and increases the performance of the system. In addition, after the sending device completes configuring the first data packet, the sending device only needs to change when the channel measurement state of the specified device changes. It is only necessary to re-configure the first data packet to avoid the configuration of the first data packet, which saves the air interface resource. In this embodiment, the corresponding data packet is added in the second data packet. The first packet configuration field implements the receiving device to measure the CSI of a plurality of designated devices. Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on such understanding, the technique of the present invention The portion of the program that contributes in essence or to the prior art may be embodied in the form of a software product stored in a readable storage medium, such as a computer floppy disk, hard disk or optical disk, etc., including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention. The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims

1. A method for channel measurement and channel state information CSI feedback, characterized by comprising: a sending device broadcasting a training sequence for channel measurement and an identification of the sending device, so that the receiving device performs the following steps according to the training sequence and the The identification of the sending device measures the CSI of at least one designated device, and the receiving device is the device that receives the training sequence and the identification of the sending device;

The sending device sends a CSI feedback indication time to the receiving device, so that the receiving device sends the measured CSI of at least one designated device to the sending device at the CSI feedback indication time.

2. The method of channel measurement and CSI feedback according to claim 1, characterized in that the method further includes:

Send the identification of the at least one designated device to the receiving device, so that the receiving device measures the CSI of the device corresponding to the identification of the at least one designated device according to the training sequence and the identification of the sending device.

3. The method for channel measurement and CSI feedback according to claim 2, wherein the sending device broadcasts a training sequence for channel measurement and an identification of the sending device, including: the sending device broadcasts a first Data packet, the first data packet includes: the training sequence and the identification of the sending device;

The sending of the identification of the at least one designated device to the receiving device is:

Send a second data packet to the receiving device, where the second data packet includes: the identification and configuration domain information of the at least one designated device, so that the receiving device performs the processing according to the first data packet and the at least one designated device. The identification of the device and the configuration domain information measure the CSI of the device corresponding to the identification of the at least one designated device;

The configuration domain information includes: a time offset value of the next broadcast time of the first data packet relative to the starting position of the natural cycle of the base station to which the sending device belongs, so that the receiving device can transmit data according to the time offset value When the first data packet is broadcast next time, it is in an open state.

4. The method of channel measurement and CSI feedback according to claim 3, characterized in that the configuration domain information further includes: first information, the first information is used to represent that the at least one designated device is the first The first type of equipment or the second type of equipment, so that the receiving device uses different methods to send the measured CSI of at least one specified device to the sending device; the first type of equipment is for data exchange with the receiving device Transmitting equipment, the second type of equipment is equipment that causes interference to the receiving equipment when transmitting signals with other equipment except the receiving equipment.

5. The method of channel measurement and CSI feedback according to claim 4, characterized in that the CSI of the device is specifically:

Use a high-precision sending method to send the CSI of the first type device to the sending device,

6. The method of channel measurement and CSI feedback according to claim 4 or 5, characterized in that, if the received CSI is the measured CSI of the first type device, then the method further include:

Receive second information sent by the receiving device, where the second information includes at least one of the following information: phase difference information between channel information between the first type devices, phase difference information between the first type devices, Power difference information between channel information;

Perform joint beamforming based on at least one of the phase difference information and the power difference information and the received CSI.

7. The method of channel measurement and CSI feedback according to any one of claims 3-6, characterized in that, if the number of designated devices is at least two, the number of configuration domain information is equal to the number of designated devices. The number of at least one designated device is a corresponding relationship, or the number of configuration domain information is equal to the number of designated device sets, and a corresponding relationship is formed.

8. A method for channel measurement and channel state information CSI feedback, characterized in that it includes: a receiving device receiving a training sequence for channel measurement broadcast by a sending device and an identification of the sending device; Measure at least one designated device based on the training sequence and the identification of the sending device.

CSI;

Receive the CSI feedback indication time sent by the sending device;

Send the measured CSI of at least one designated device to the sending device at the CSI feedback indication time.

9. The method of channel measurement and CSI feedback according to claim 8, characterized in that, before measuring the CSI of at least one designated device according to the training sequence and the identity of the sending device, the method further includes: :

Receive the identification of the at least one designated device sent by the sending device;

Measuring the CSI of at least one designated device according to the training sequence and the identity of the sending device is:

Measure the CSI of the device corresponding to the identity of the at least one designated device according to the training sequence and the identity of the sending device.

10. The method of channel measurement and CSI feedback according to claim 9, characterized in that the receiving device receives the training sequence for channel measurement broadcast by the sending device and the identification of the sending device is:

The receiving device receives the first data packet broadcast by the sending device, and the first data packet includes: a training sequence and an identification of the sending device;

The step of receiving the identity of the at least one designated device sent by the sending device is: receiving a second data packet sent by the sending device, where the second data packet includes: the identity and configuration domain of the at least one designated device. information;

The receiving device measures the CSI of the device corresponding to the identity of the at least one designated device based on the first data packet, the identity of the at least one designated device, and the configuration domain information;

The configuration domain information includes: a time offset value of the next broadcast time of the first data packet relative to the starting position of the natural cycle of the base station to which the sending device belongs, so that the receiving device According to the time offset value, the first data packet is in an open state at the next time the first data packet is broadcast.

11. The method of channel measurement and CSI feedback according to claim 10, characterized in that the configuration domain information further includes: first information, the first information is used to indicate that the at least one designated device is the first type device or a second type device, the first type device is a device that performs data transmission with the receiving device, and the second type device is a device that transmits signals with other devices except the receiving device. Equipment causing interference to receiving equipment;

The sending the measured CSI of at least one designated device to the sending device at the CSI feedback indication time includes:

Send the measured CSI of at least one designated device to the sending device at the CSI feedback indication time according to the first information and in different ways.

12. The method of channel measurement and CSI feedback according to claim 11, characterized in that: sending at least the measured information to the sending device at the CSI feedback indication time according to the first information and using different methods. The CSI of a specified device, including:

At the CSI feedback indication time, send the measured CSI of the first type device to the sending device using a high-precision sending method;

At the CSI feedback indication time, the measured CSI of the second type device is sent to the sending device in a low-precision sending mode.

13. The method of channel measurement and CSI feedback according to claim 11 or 12, wherein if the CSI is the measured CSI of the first type of device, the method further includes: The device sends second information, where the second information includes at least one of the following information: phase difference information between channel information between the first type of devices, phase difference information between the channel information between the first type of devices Power difference information, so that the sending device performs joint beam forming based on at least one of the phase difference information, the power difference information and the received CSI.

14. The method for channel measurement and CSI feedback according to any one of claims 10 to 13, characterized in that, if the number of designated devices is at least two, then the number of configuration domain information is equal to the The number of at least one specified device, and is a corresponding relationship, or, all The number of the above configuration domain information is equal to the number of specified device sets, and is a corresponding relationship.

15. A sending device, characterized in that it includes:

A broadcasting unit, configured to broadcast a training sequence for channel measurement and the identification of the sending device, so that the receiving device can measure the CSI of at least one designated device according to the training sequence and the identification of the sending device, and the receiving device is A device that receives the training sequence and the identification of the sending device;

The first sending unit is configured to send a CSI feedback indication time to the receiving device, so that the receiving device sends the measured CSI of at least one designated device to the sending device at the CSI feedback indication time.

16. The sending device according to claim 15, further comprising: a second sending unit, configured to send the identification of the at least one designated device to the receiving device, so that the receiving device can perform the operation according to the training The sequence and the identity of the sending device measure the CSI of the device corresponding to the identity of the at least one designated device.

17. The sending device according to claim 16, characterized in that, the broadcast unit is specifically configured to broadcast a first data packet, and the first data packet includes: the training sequence and the identification of the sending device;

The second sending unit is specifically configured to send a second data packet to the receiving device. The second data packet includes: the identification and configuration domain information of the at least one designated device, so that the receiving device can send the data according to the The first data packet and the identification of the at least one designated device and the configuration domain information measure the CSI of the device corresponding to the identification of the at least one designated device;

The configuration domain information includes: a time offset value of the next broadcast time of the first data packet relative to the starting position of the natural cycle of the base station to which the sending device belongs, so that the receiving device can perform the broadcast according to the time offset value It is in an open state at the next time the first data packet is broadcast.

18. The sending device according to claim 17, characterized in that,

The configuration domain information also includes: first information, the first information is used to characterize the at least A designated device is a first-category device or a second-category device, so that the receiving device sends the measured CSI of at least one designated device to the sending device in different ways; the first-category device is the same as the specified device. The receiving device is a device that performs data transmission, and the second type of device is a device that causes interference to the receiving device when transmitting signals with other devices other than the receiving device.

19. The sending device according to claim 17 or 18, further comprising: a receiving unit, configured to receive the received CSI if it is the measured CSI of the first type device. The second information sent by the receiving device, the second information includes at least one of the following information: phase difference information between channel information between the first type of devices, channel between the first type of devices Power difference information between information;

A processing unit configured to perform joint beamforming based on at least one of the phase difference information and the power difference information and the received CSI.

20. The sending device according to any one of claims 15 to 19, characterized in that, if the number of the designated devices is at least two, the number of the configuration domain information is equal to the number of the at least one designated device. quantity, and there is a one-to-one correspondence relationship, or, the quantity of the configuration domain information is equal to the number of specified device sets, and there is a one-to-one correspondence relationship.

21. A receiving device, characterized in that it includes:

The first receiving unit is configured to receive the training sequence for channel measurement broadcast by the sending device and the identification of the sending device;

A measurement unit, configured to measure the CSI of at least one designated device according to the training sequence and the identification of the sending device;

The second receiving unit is configured to receive the CSI feedback indication time sent by the sending device; the first sending unit is configured to send the measured CSI of at least one designated device to the sending device at the CSI feedback indication time. .

22. The receiving device according to claim 21, further comprising: a third receiving unit, configured to measure the CSI of at least one designated device according to the training sequence and the identity of the sending device. , receiving the at least one sent by the sending device The identification of a designated device;

The measurement unit is specifically configured to measure the CSI of the device corresponding to the identity of the at least one designated device according to the training sequence and the identity of the sending device.

23. The receiving device according to claim 22, characterized in that,

The first receiving unit is specifically configured to receive the first data packet broadcast by the sending device, where the first data packet includes: a training sequence and an identification of the sending device;

The third receiving unit is specifically configured to receive a second data packet sent by the sending device, where the second data packet includes: the identification and configuration domain information of the at least one designated device;

The measurement unit is specifically configured to measure the CSI of the device corresponding to the identity of the at least one designated device according to the first data packet, the identity of the at least one designated device, and the configuration domain information;

The configuration domain information includes: a time offset value of the next broadcast time of the first data packet relative to the starting position of the natural cycle of the base station to which the sending device belongs, so that the receiving device can perform the broadcast according to the time offset value When the first data packet is broadcast next time, it is in an open state.

24. The receiving device according to claim 23, characterized in that the configuration domain information further includes: first information, the first information is used to characterize whether the at least one designated device is a first type device or a second type device. Class equipment, the first class device is a device that performs data transmission with the receiving device, and the second class device is a device that causes interference to the receiving device when transmitting signals with other devices other than the receiving device. equipment;

The first sending unit is specifically configured to send the measured CSI of at least one designated device to the sending device at the CSI feedback indication time in different ways according to the first information.

25. The receiving device according to claim 24, wherein the first sending unit is specifically configured to send the measured measured data to the sending device using a high-precision sending method at the CSI feedback indication time. CSI of the first type of device; at the CSI feedback indication time, send the measured CSI of the second type of device to the sending device in a low-precision sending mode.

26. The receiving device according to claim 24 or 25, further comprising: The second sending unit is configured to send second information to the sending device if the CSI is the measured CSI of the first type of device, where the second information includes at least one of the following information: The phase difference information between the channel information between the first type of devices, and the power difference information between the channel information between the first type of devices, so that the sending device can transmit information according to the phase difference information and the power difference. At least one item of information and the received CSI perform joint beamforming.

27. The receiving device according to any one of claims 23 to 26, wherein if the number of designated devices is at least two, the number of configuration domain information is equal to the at least one designated device. The number of configuration domain information is equal to the number of specified device sets, and there is a one-to-one correspondence relationship.

28. A system for channel measurement and CSI feedback, characterized by including:

A sending device, configured to broadcast a training sequence for channel measurement and an identification of the sending device, where the receiving device is a device that receives the training sequence and an identification of the sending device; sending CSI to the receiving device Feedback indicates time;

The receiving device is configured to receive the training sequence broadcast by the sending device and the identification of the sending device; measure the CSI of at least one designated device according to the training sequence and the identification of the sending device; receive the The CSI feedback indication time sent by the sending device; sending the measured CSI of at least one designated device to the sending device at the CSI feedback indication time.

29. The system for channel measurement and CSI feedback according to claim 28, wherein the sending device is further configured to send the identification of the at least one designated device to the receiving device;

The receiving device is further configured to receive the identity of the at least one designated device sent by the sending device; and measure the CS of the device corresponding to the identity of the at least one designated device according to the training sequence and the identity of the sending device. I.

30. The system for channel measurement and CSI feedback according to claim 29, characterized in that the sending device is specifically configured to broadcast a first data packet, and the first data packet includes: the training sequence and the the identification of the sending device; sending a second data packet to the receiving device, so The second data packet includes: the identification and configuration domain information of the at least one designated device; the receiving device, specifically configured to receive the first data packet broadcast by the sending device; and receiving the second data sent by the sending device. Package; measure the CSI of the device corresponding to the identification of the at least one designated device according to the first data packet and the identification of the at least one designated device and the configuration domain information;

31. The system for channel measurement and CSI feedback according to claim 30, wherein the configuration domain information further includes: first information, and the first information is used to represent that the at least one designated device is the first The first type of equipment or the second type of equipment, so that the receiving device uses different methods to send the measured CSI of at least one specified device to the sending device; the first type of equipment is for data exchange with the receiving device Transmitting equipment, the second type of equipment is equipment that causes interference to the receiving equipment when transmitting signals with other equipment except the receiving equipment.

32. The system for channel measurement and CSI feedback according to claim 31, characterized in that the receiving device is specifically configured to use a high-precision sending method to send data to the sending device at the CSI feedback indication time. Send the measured CSI of the first type device; at the CSI feedback indication time, use a low-precision sending mode to send the measured CSI of the second type device to the sending device.

33. The system for channel measurement and CSI feedback according to claim 31 or 32, characterized in that,

The sending device is also configured to receive second information sent by the receiving device, where the second information includes at least one of the following information: phase difference information between channel information between the first type of devices, Power difference information between channel information between the first type devices; performing joint beamforming based on at least one of the phase difference information and the power difference information and the received CSI; The receiving device is also configured to send second information to the sending device.

34. The system for channel measurement and CSI feedback according to any one of claims 30 to 33, wherein if the number of designated devices is at least two, then the number of configuration domain information is equal to the The number of at least one designated device is a -corresponding relationship, or the number of configuration domain information is equal to the number of designated device sets, and is a -corresponding relationship.