CN107409018B

CN107409018B - Feedback method, device and communication system

Info

Publication number: CN107409018B
Application number: CN201580077098.3A
Authority: CN
Inventors: 刘亚林; 庞继勇; 张佳胤; 朱俊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-02-28
Filing date: 2015-02-28
Publication date: 2019-12-24
Anticipated expiration: 2035-02-28
Also published as: WO2016134546A1; CN107409018A

Abstract

The invention provides a feedback method, a device and a communication system, which relate to the field of communication, can feed back the data receiving condition of a plurality of receiving devices at the same time and the same channel, meets the requirement of a Wi-Fi system after OFDMA introduction, and comprises the following steps: the sending device sends the data of one or more receiving devices to the one or more receiving devices by bearing the data on the resource units; the sending equipment receives response information sent by the one or more receiving equipment loaded on N resource particles corresponding to the resource units; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

Description

Feedback method, device and communication system

Technical Field

The present invention relates to the field of communications, and in particular, to a feedback method, device, and communication system.

Background

In the existing Wi-Fi system, uplink and downlink data transmission are all Point-to-Point transmission, that is, only one STA (Station) transmits data to an AP (Access Point) in the same time and the same channel, or only one AP transmits data to one STA in the same time and the same channel. In the prior art, if the receiving device receives the data successfully this time, the receiving device feeds back an ACK (Acknowledgement character) to the sending device to inform the sending device that the data is successfully received this time. And if the receiving equipment fails to receive the data, the feedback information is not sent.

After introducing OFDMA (Orthogonal Frequency Division Multiple Access) technology, uplink data transmission will be changed to multipoint-to-multipoint transmission, and downlink data transmission will be changed to point-to-multipoint transmission. Namely: at the same time and in the same channel, a plurality of STAs transmit data to the AP at the same time; or the AP transmits data to multiple STAs at the same time and on the same channel.

However, in the existing Wi-Fi system, ACK transmission occupies the whole bandwidth, that is, only one receiving device can feed back ACK to the sending device at the same time and in the same channel, and the requirement of the Wi-Fi system after OFDMA is introduced cannot be met.

Disclosure of Invention

Embodiments of the present invention provide a feedback method, device and communication system, which can feed back data receiving conditions of multiple receiving devices at the same time and in the same channel, and meet the requirements of a Wi-Fi system after OFDMA is introduced.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a feedback method is disclosed, the method comprising:

the sending device sends the data of one or more receiving devices to the one or more receiving devices by bearing the data on the resource units;

the sending equipment receives response information sent by the one or more receiving equipment loaded on N resource particles corresponding to the resource units; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

With reference to the first aspect, in a first possible implementation manner of the first aspect,

if the response message indicates that the data reception on the resource unit is successful, the method further includes:

and if the sending equipment does not receive the response information within the preset time, the sending equipment sends the data of the one or more receiving equipment to the one or more receiving equipment by bearing the data on the resource unit.

With reference to the first aspect, in a second possible implementation manner of the first aspect,

the response information is obtained by the one or more receiving devices through repeated coding of the successful data receiving identification or obtained by the one or more receiving devices through repeated coding of the failed data receiving identification.

With reference to the first aspect or the first or second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect,

before the sending device receives the response information sent by the one or more receiving devices carried on the N resource elements corresponding to the resource unit, the method further includes:

the sending equipment receives the short training sequence field sent by the one or more receiving equipment;

or, the sending device receives the short training sequence field and the long training sequence field sent by the one or more receiving devices.

With reference to the first aspect or the first or second or third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect,

the method further comprises the following steps:

if the sending device carries the data on the M resource units to send to the one or more receiving devices, the sending device receives response information transmitted by the one or more receiving devices, which is carried on the M × N resource particles corresponding to the M resource units.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect,

if the M resource units only have one cyclic redundancy check code (CRC), the M x N resource particles all bear the data receiving success identification, or the M x N resource particles all bear the data receiving failure identification.

With reference to the first aspect, in a sixth possible implementation manner of the first aspect,

the sending, by the sending device, carrying data of one or more receiving devices on the resource unit to send to the one or more receiving devices specifically includes:

the sending equipment loads data of a first receiving equipment and a second receiving equipment on the resource unit and sends the data to the first receiving equipment and the second receiving equipment;

the receiving, by the sending device, the response information sent by the one or more receiving devices carried on the N resource elements corresponding to the resource unit specifically includes:

the sending device receives first response information and second response information, wherein the first response information is carried on N resource particles corresponding to the resource units and is sent by the first receiving device, the second response information is sent by the second receiving device, the first response information is a first sequence representing whether the first receiving device successfully receives data, and the second response information is a second sequence representing whether the second receiving device successfully receives data; the first sequence is orthogonal to the second sequence, or,

the sending device receives first response information which is borne on X resource particles corresponding to the resource unit and sent by the first receiving device, and receives second response information which is borne on N-X resource particles corresponding to the resource unit and sent by the second receiving device.

In a second aspect, a feedback method is disclosed, the method comprising:

receiving data carried on a resource unit by receiving equipment, wherein the data of one or more receiving equipment comprising the receiving equipment is carried on the resource unit;

the receiving device loads response information on the N resource particles corresponding to the resource units and sends the response information to the sending device; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

With reference to the second aspect, in a first possible implementation manner of the second aspect,

and when the receiving equipment fails to receive the data carried on the resource unit, the receiving equipment does not send the response information to the sending equipment.

With reference to the second aspect, in a second possible implementation manner of the second aspect,

before the receiving device carries response information on the N resource particles corresponding to the resource unit and sends the response information to the sending device, the method further includes:

the receiving device obtains the response information by repeatedly coding the data receiving success identification or obtains the response information by repeatedly coding the data receiving failure identification.

With reference to the second aspect or the first or second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect,

transmitting a short training sequence field to the transmitting device;

or transmitting the short training sequence field and the long training sequence field to the transmitting device.

With reference to the second aspect or the first or second or third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect,

the method further comprises the following steps: if the receiving device receives the data carried on the M resource units, the receiving device carries the response information on M × N resource particles corresponding to the M resource units and sends the response information to the sending device.

With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect,

With reference to the second aspect, in a sixth possible implementation manner of the second aspect, the receiving device is a first receiving device, the resource unit is used to carry data that the sending device sends to the first receiving device and a second receiving device,

the receiving device sending the response information carried on the N resource particles corresponding to the resource unit to the sending device specifically includes:

the first receiving device sends a first sequence representing whether the first receiving device successfully receives the data to the sending device by bearing the first sequence on the N resource particles corresponding to the resource units; wherein, the N resource elements corresponding to the resource unit are further used for carrying a second sequence representing whether the second receiving device successfully receives the data; the first sequence is orthogonal to the second sequence; alternatively, the first and second electrodes may be,

the first receiving device loads the response information on X resource particles corresponding to the resource units and sends the response information to the sending device; wherein, the N-X resource particles corresponding to the resource unit are used for carrying response information of the second receiving device.

In a third aspect, a transmitting device is disclosed, comprising:

a sending unit, configured to send data of one or more receiving devices to the one or more receiving devices by bearing the data on a resource unit;

a receiving unit, configured to receive response information sent by the one or more receiving devices loaded on N resource particles corresponding to the resource unit; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

With reference to the third aspect, in a first possible implementation manner of the third aspect,

the sending unit is further configured to, if the response information indicates that the data on the resource unit is successfully received and the receiving unit does not receive the response information within a preset time, send the data of the one or more receiving devices to the one or more receiving devices by bearing the data on the resource unit.

With reference to the third aspect, in a second possible implementation manner of the third aspect,

the response information is obtained by the one or more receiving devices by identifying repeated coding for successful data reception or by the one or more receiving devices by identifying repeated coding for failed data reception.

With reference to the third aspect, in a third possible implementation manner of the third aspect, the sending unit is specifically configured to send data of a first receiving device and a second receiving device to the first receiving device and the second receiving device by bearing the data on the resource unit;

the receiving unit is further configured to receive first response information, which is carried on the N resource particles corresponding to the resource unit and sent by the first receiving device, and receive second response information, which is carried on the N resource particles corresponding to the resource unit and sent by the second receiving device; wherein the first response information is a first sequence representing whether the first receiving device successfully receives data, and the second response information is a second sequence representing whether the second receiving device successfully receives data; the first sequence is orthogonal to the second sequence, or,

the receiving unit is further configured to receive response information sent by the first receiving device and borne on X resource particles corresponding to the resource unit, and receive response information sent by the second receiving device and borne on N-X resource particles corresponding to the resource unit.

In a fourth aspect, a receiving device is disclosed, which includes:

a receiving unit, configured to receive data carried on a resource unit, where the resource unit carries data of one or more receiving devices including the receiving device;

a sending unit, configured to bear response information on the N resource particles corresponding to the resource unit and send the response information to the sending device; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the method further includes an encoding unit,

the encoding unit is configured to repeat encoding for a data reception success identifier to obtain the response information, or repeat encoding for a data reception failure identifier to obtain the response information, before the sending unit loads the response information on the N resource particles corresponding to the resource unit and sends the response information to the sending device.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the sending unit is further configured to send a short training sequence field to the sending device before carrying response information on the N resource elements corresponding to the resource units and sending the response information to the sending device;

or, before carrying the response information on the N resource elements corresponding to the resource unit and sending the response information to the sending device, sending the short training sequence field and the long training sequence field to the sending device.

With reference to the fourth aspect, in a third possible implementation manner of the fourth aspect, the receiving device is a first receiving device, and the resource unit is used to carry the resource unit from the sending device to the first receiving device

The sending unit is further configured to send a first sequence representing whether the first receiving device successfully receives the data to the sending device by being carried on the N resource elements corresponding to the resource unit; wherein, the N resource elements corresponding to the resource unit are further used for carrying a second sequence representing whether the second receiving device successfully receives the data; the first sequence is orthogonal to the second sequence; alternatively, the first and second electrodes may be,

bearing the response information on X resource particles corresponding to the resource units and sending the response information to the sending equipment; wherein, the N-X resource particles corresponding to the resource unit are used for carrying response information of the second receiving device.

In a fifth aspect, a transmitting device is disclosed, comprising:

a processor, configured to send data of one or more receiving devices to the one or more receiving devices over a resource unit through a communication interface;

a processor, configured to receive, through a communication interface, response information sent by the one or more receiving devices that are carried on N resource particles corresponding to the resource unit; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect,

the response information is obtained by the one or more receiving devices through repeated coding of successful data reception identifiers, or obtained through repeated coding of failed data reception identifiers.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect,

the processor is further configured to receive, through a communication interface, a short training sequence field sent by the one or more receiving devices before receiving response information sent by the one or more receiving devices carried on N resource elements corresponding to the resource unit;

or, before receiving response information sent by the one or more receiving devices carried on the N resource elements corresponding to the resource unit, receive, through a communication interface, the short training sequence field and the long training sequence field sent by the one or more receiving devices.

In a sixth aspect, a receiving device is disclosed, comprising:

a processor, configured to receive, through a communication interface, data carried on a resource unit, the resource unit carrying data of one or more receiving devices including the receiving device;

the processor is further configured to bear response information on the N resource particles corresponding to the resource unit through a communication interface, and send the response information to the sending device; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect,

the processor is further configured to obtain the response information by repeatedly encoding a data reception success identifier or obtain the response information by repeatedly encoding a data reception failure identifier before carrying the response information on the N resource elements corresponding to the resource unit and transmitting the response information to the transmitting device.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect,

the processor is further configured to send a short training sequence field to the sending device through a communication interface before carrying the response information on the N resource elements corresponding to the resource units and sending the response information to the sending device;

or before carrying the response information on the N resource elements corresponding to the resource units and sending the response information to the sending device, sending the short training sequence field and the long training sequence field to the sending device through a communication interface.

In a seventh aspect, a communication system is disclosed, comprising: a sending device and a receiving device, wherein,

the sending device is the sending device according to the third aspect of the present invention, and the receiving device is the receiving device according to the third aspect of the present invention;

or, the sending device is the sending device according to the fifth aspect of the above technical solution; the receiving device is the receiving device in the sixth aspect of the above technical solution;

if the sending equipment is an Access Point (AP), the receiving equipment is a Station (STA); if the sending equipment is the STA, the receiving equipment is the AP; the communication system includes one of the APs and at least one of the STAs.

According to the feedback method, the device and the communication system provided by the invention, the sending device loads the data on the resource units and sends the data to the receiving device, and the receiving device loads the response information (namely the information representing the success or failure of data reception) on the resource particles corresponding to the resource units and transmits the response information to the sending device. Since the bandwidth can be divided into a plurality of resource units in the frequency domain, a plurality of response information can be fed back at the same time. Therefore, the data receiving conditions of a plurality of receiving devices can be fed back at the same time and the same channel, and the requirement of a Wi-Fi system introduced with OFDMA can be met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art resource grid;

fig. 2 is a schematic flowchart of a feedback method for data reception according to embodiment 1 of the present invention;

fig. 3(a) is a schematic diagram of a structure of an existing ACK transmission frame;

fig. 3(b) is a schematic structural diagram of an ACK transmission frame provided in the present invention;

fig. 3(c) is a schematic diagram of another structure of an ACK transmission frame provided in the present invention;

FIG. 4 is a schematic bearer diagram of a resource element according to an embodiment of the present invention;

fig. 5 is a schematic flowchart of a feedback method for data reception according to embodiment 2 of the present invention;

fig. 6 is a schematic flowchart of a feedback method for data reception according to embodiment 3 of the present invention;

fig. 7 is a flowchart illustrating a feedback method for data receiving status according to embodiment 4 of the present invention;

fig. 8 is a flowchart illustrating a feedback method for data receiving status according to embodiment 5 of the present invention;

fig. 9 is a block diagram of a transmitting apparatus according to embodiment 6 of the present invention;

fig. 10 is a block diagram of a receiving apparatus according to embodiment 7 of the present invention;

fig. 11 is a block diagram of a transmitting apparatus according to embodiment 8 of the present invention;

fig. 12 is a block diagram of a receiving apparatus according to embodiment 9 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In existing Wi-Fi systems, including legacy (legacy) systems based on IEEE (Institute of Electrical and Electronics Engineers) 802.11a, HT (High Throughput) systems based on IEEE 802.11n, and VHT (very High Throughput) systems based on IEEE 802.11ac, uplink data transmission is single-point-to-single-point transmission, that is, only one STA transmits data to an AP in the same time, the same channel, or the same section of spectrum. Downlink data transmission is also single-point-to-single-point transmission, that is, at the same time and in the same frequency spectrum, the AP transmits to only one STA. In a Wi-Fi system or an HEW (High Efficiency wireless local area network) system after the OFDMA technology is introduced, uplink data transmission is not point-to-point transmission any more, but is multipoint-to-point transmission, that is, a plurality of STAs transmit data to an AP at the same time in the same channel or the same frequency spectrum; the downlink data transmission is not a point-to-point transmission, but a point-to-multipoint transmission, that is, the AP transmits data to multiple STAs at the same time, the same channel, or the same frequency spectrum.

In the existing Wi-Fi system, the data reception situation of the receiving device is fed back to the transmitting device using ACK or NACK. Wherein, ACK indicates that the receiving device successfully receives the data, NACK indicates that the receiving device fails to receive the data, and the transmitting device needs to retransmit the data to the receiving device after receiving NACK. The physical layer frame format of the ack (nack) transmission frame is: preamble + content part. Wherein the preamble part comprises a conventional short training sequence field, a conventional long training sequence field and a conventional signaling field. The MAC layer format of the ack (nack) content part includes a frame control field, a duration field, a receiving device address, and a frame control sequence.

Because the transmission of the ACK frame occupies the whole bandwidth, only one ACK frame can be transmitted (i.e. only the data reception condition of one receiving device can be fed back) at the same time in the same channel or the same section of frequency spectrum, and the requirement of the Wi-Fi system after the OFDMA is introduced cannot be met. In addition, the content in the frame format is large, and the consumed resource overhead is too large.

In addition, the resource particles and the resource units related to the embodiments of the present invention are explained. As shown in fig. 1, one column may be used to represent the signal transmitted in one time slot and one row represents the information transmitted on one subcarrier. In fig. 1, re (resource element) is a resource particle according to the present invention, and a resource unit is composed of a resource particles. Where a represents a symbols and B represents B subcarriers. It should be noted that, the existing ACK feedback is designed based on a user terminal, that is, a user terminal sends data once to the user terminal, and the user terminal will feed back an ACK/NACK to a sending device. In the prior art, the ACK transmission occupies the whole bandwidth, i.e. the ACK transmission occupies 20 MHz. As shown in connection with fig. 1, ACK transmission may occupy all subcarriers in the frequency domain of fig. 1. In the present application, the receiving device feeds back the data receiving situation to the sending device by using one resource unit, and since the bandwidth can be divided into a plurality of resource units in the frequency domain, a plurality of response information (i.e. information representing the data receiving situation) can be fed back at the same time.

It should be noted that when the data transmission fails, the receiving device may not send any feedback information.

Example 1:

an embodiment of the present invention provides a feedback method, which is applied to a sending device, where the sending device may be an AP or an STA in a Wi-Fi system after OFDMA is introduced, and as shown in fig. 2, the method includes the following steps:

101. the sending device sends the data of one or more receiving devices to the one or more receiving devices by bearing the data on the resource units.

Wherein, the transmitting device may be an AP, and the receiving device may be a STA. Or, the transmitting device is a STA and the receiving device is an AP. Specifically, in uplink transmission, a plurality of STAs may simultaneously transmit data to the AP. The bandwidth is divided into a plurality of resource units in the frequency domain, and a STA can transmit data to the AP through one or more of the resource units. Other STAs may also transmit data to the AP via one or more resource elements. Likewise, in downlink transmission, the AP may transmit data to one STA through one or more resource elements. The AP may also transmit data to other STAs through one or more resource elements. From the perspective of the resource unit, it may carry data of one or more receiving devices (downlink transmission) or carry data of one or more transmitting devices (uplink transmission).

In addition, for any resource unit in the uplink transmission, corresponding resource particles are used for feeding back whether the data carried on the resource unit is successfully transmitted or not in the downlink transmission. For any resource unit in downlink transmission, in uplink transmission, corresponding resource particles are used for feeding back whether data carried on the resource unit is successfully transmitted or not. The uplink transmission is that the user terminal transmits data to the AP. So-called downlink transmission, that is, the AP transmits data to the user terminal. Exemplarily, referring to fig. 1, resource element 1 is used for AP to transmit data to STA1, and there is a resource element corresponding to resource element 1 in uplink transmission for STA1 to feed back STA1 data reception to AP. In uplink transmission, the resource element corresponding to the resource unit 1 may be a resource element in the same frequency band as the resource unit 1, such as the resource element in the frequency band where the resource unit 1 is located in fig. 1, for example: the resource particles in region 1, or the resource particles in region 2, shown in fig. 1. The resource element corresponding to the resource unit 1 may also be a resource element in a frequency band different from that of the resource unit, such as a resource element in the frequency band in which the resource unit 2 is located in fig. 1, a resource element in the area 3 shown in fig. 1, or a resource element in the area 4. The corresponding relationship between the resource units and the resource particles is preset by the system, and is not limited herein.

102. The sending equipment receives response information sent by the one or more receiving equipment loaded on N resource particles corresponding to the resource units; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

In a specific implementation, the response information is obtained by the one or more receiving devices by repeatedly encoding the successful data reception identifier, or obtained by the one or more receiving devices by repeatedly encoding the failed data reception identifier. Wherein, the N resource particles all bear the data reception success identifier, or the N resource particles all bear the data reception failure identifier.

For example, 1 may be used to indicate that the receiving device has successfully received data, and 0 may be used to indicate that the receiving device has failed to receive data. Or, 1 represents that the receiving device successfully receives the data, and the receiving device fails to receive the data and does not transmit any response information to the sending device. It should be noted that, because the sending device carries data on one resource unit to send to the receiving device, the receiving device carries the response information on the N resource particles corresponding to the resource unit to send to the sending device. Such as: if the receiving device successfully receives the data of the 4 resource elements corresponding to the resource unit, all the 4 resource elements carry 1. The transmitting end receives 1 (i.e. 1111) carried on the 4 resource elements, and further determines that the data reception of the receiving device is successful.

It should be noted that, before the sending device receives the response information sent by the one or more receiving devices carried on the N resource elements corresponding to the resource unit, the method further includes:

and the sending equipment receives the short training sequence field sent by the one or more receiving equipments.

Referring to fig. 3(a), it is a schematic diagram of a structure of an ACK transmission frame in the prior art, including: the method provided by the invention does not need to transmit the signaling domain or transmit the long training sequence domain and the signaling domain to the receiving equipment. For example, as shown in fig. 3(b), a schematic structural diagram of an ACK transmission frame provided in the present invention includes: STF (short training sequence field), DATA (ACK content part). Fig. 3(c) is a schematic structural diagram of another ACK transmission frame provided by the present invention, which includes: STF (short training sequence field), LTF (long training sequence field), ACK content part. In addition, referring to fig. 3(b), the method of the present invention provides fewer ACK content parts compared to the prior art, including: and the resource particle corresponding to the resource unit carries a data receiving success identifier, or a data receiving failure identifier, or a data receiving success identifier and a data receiving failure identifier. Such as: if the sending device sends the data to the receiving device by bearing the data on one resource unit, and the resource unit corresponds to 4 resource elements, when the receiving device succeeds in receiving the data, the ACK content part is 1111. Therefore, the signaling transmission load is reduced, the occupied resources are less, and the resource utilization rate of the system is improved.

In a preferred embodiment of the present invention, if the sending device sends the first data bearer to the first receiving device on the resource unit 1, the sending device sends the second data bearer to the second receiving device on the resource unit 2.

The sending device receives first response information which is borne on N resource particles corresponding to the resource unit 1 and sent by the first receiving device; and receiving second response information which is carried on the N resource particles corresponding to the resource unit 2 and is sent by the second receiving equipment.

In a preferred implementation of the present invention, if the response information indicates that the data reception on the resource unit is successful, the method further includes:

In a preferred embodiment of the present invention, if the sending device carries the data on M resource units to send to the one or more receiving devices, the sending device receives response information transmitted by the one or more receiving devices, which is carried on M × N resource particles corresponding to the M resource units.

In addition, if there is only one CRC check for the M resource elements, the M × N resource elements all bear the data reception success identifier, or the M × N resource elements all bear the data reception failure identifier.

For example, referring to fig. 4, if the sending device carries data on 3 resource units (resource unit 1, resource unit 2, and resource unit 3 correspond) to send to the receiving device, and each resource unit corresponds to 4 resource particles, when the receiving device succeeds in receiving data, 12(4 × 3) resource particles corresponding to the 3 resource units all carry 1, that is, the resource particles corresponding to the resource unit 1, the resource unit 2, and the resource unit 3 all carry 1.

In a preferred embodiment of the present invention, the sending, by the sending device, data of one or more receiving devices carried on a resource unit to the one or more receiving devices specifically includes: and the sending equipment carries the data of the first receiving equipment and the second receiving equipment on the resource unit and sends the data to the first receiving equipment and the second receiving equipment.

Exemplarily, a Wi-Fi system introduced with OFDMA has one AP and at least one STA. Here, the AP transmits data to a plurality of STAs at the same time. It should be noted that the AP generally transmits data to at least one STA through M resource units. If the AP transmits data to 2 STAs through M resource units, M × N resource particles corresponding to the M resource units are used for the first STA to feed back response information (i.e., data reception situation) and are used for the second STA to feed back response information. For example, if the AP transmits the first data bearer to the first STA on one resource unit, and transmits the second data bearer to the second STA on the resource unit. The first STA sends an orthogonal sequence a or-a on the 4 resource particles corresponding to the resource unit according to whether the data reception of the first STA succeeds or not, wherein the sequence a represents that the first STA successfully receives the data, and the sequence-a represents that the data reception of the first STA fails. The sequences a, -a occupy 4 resource elements. And the second STA sends an orthogonal sequence b or-b on the 4 resource particles corresponding to the resource unit according to the success or failure of data reception of the second STA, wherein the sequence b represents that the first STA successfully receives the data, and the sequence-b represents that the first STA fails in data reception. The sequences b, -b occupy 4 resource elements. The sequences a, b are orthogonal to each other. The AP receives the first response information transmitted by the first STA and the second response information transmitted by the second STA on the 4 resource elements corresponding to the resource unit, and decodes the first response information transmitted by the first STA by using the orthogonal code a and decodes the second response information transmitted by the second STA by using the orthogonal code b.

Alternatively, the AP transmits data to two STAs through 3 resource units (4 resource elements per resource unit). The first STA sends aaa or-a-a-a on 12 resource elements corresponding to the 3 resource units according to the success or failure of data reception, wherein a occupies 4 resource elements. And the second STA sends bbb or-b-b-b on 12 resource particles corresponding to the 3 resource units according to the success or failure of self receiving, wherein b occupies 4 resources and is orthogonal to a. The AP receives the first response information transmitted by the first STA and the second response information transmitted by the second STA on the 12 resource elements, and decodes the first response information transmitted by the first STA by using an orthogonal code a and decodes the second response information transmitted by the second STA by using an orthogonal code b.

If the AP transmits data to 2 STAs through M resource units, X of M × N resource particles corresponding to the M resource units is used for the first STA to feed back response information (i.e., data reception situation), and the remaining M × N-X resource particles corresponding to the M resource units are used for the second STA to feed back response information. For example, the AP typically transmits data to at least one STA through 3 resource elements (4 resource elements per resource element). If the AP transmits data to 2 STAs through M resource units, for 4 resource elements corresponding to each resource unit, the upper 2 resource elements may be used for the first STA to feed back the response information, and the lower 2 resource elements are preferred for the second STA to feed back the response information. In summary, 6 of the 12 resource elements corresponding to the 3 resource units are used for the first STA to feed back the response information (i.e. data receiving situation), and the remaining 6 resource elements corresponding to the 3 resource units are used for the second STA to feed back the response information.

According to the feedback method for the data receiving condition, the sending equipment bears the data on the resource units and sends the data to the receiving equipment, and the receiving equipment bears the response information on the resource particles corresponding to the resource units and transmits the response information to the sending equipment. Since the bandwidth can be divided into a plurality of resource units in the frequency domain, a plurality of response information can be fed back at the same time. In this way, the data receiving conditions of multiple receiving devices can be fed back at the same time and the same channel, in contrast, in the prior art, ACK or NACK is used for feeding back the data receiving conditions of the receiving devices, but ACK or NACK transmission occupies the whole bandwidth, that is, only one data receiving device can feed back ACK to a data sending device at the same time and the same channel, and the requirement of a Wi-Fi system with OFDMA introduced cannot be met. The method provided by the embodiment of the invention can meet the requirement of a Wi-Fi system after OFDMA is introduced.

Example 2:

an embodiment of the present invention provides a feedback method, where an execution subject is a receiving device, as shown in fig. 5, the method includes the following steps:

201. a receiving device receives data carried on a resource unit, the resource unit carrying data of one or more receiving devices including the receiving device.

Wherein, the transmitting device may be an AP, and the receiving device may be a STA. Or, the transmitting device is a STA and the receiving device is an AP.

202. The receiving device loads response information on the N resource particles corresponding to the resource units and sends the response information to the sending device; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

In a specific implementation, the receiving device obtains the response information by repeatedly coding the data reception success identifier, or obtains the response information by repeatedly coding the data reception failure identifier. Wherein, the N resource particles all bear the data reception success identifier, or the N resource particles all bear the data reception failure identifier.

Example 3:

an embodiment of the present invention provides a feedback method, as shown in fig. 6, where the method includes the following steps:

301. the sending device sends the first data bearer on the resource unit to the first receiving device.

Wherein, the transmitting device may be an AP, and the receiving device may be a STA. Or, the transmitting device is a STA and the receiving device is an AP. Specifically, in uplink transmission, a plurality of STAs may simultaneously transmit data to the AP. The bandwidth is divided into a plurality of resource units in the frequency domain, and a STA can transmit data to the AP through one or more of the resource units. Other STAs may also transmit data to the AP via one or more resource elements. Likewise, in downlink transmission, the AP may transmit data to one STA through one or more resource elements. The AP may also transmit data to other STAs through one or more resource elements.

In addition, for any resource unit in the uplink transmission, corresponding resource particles are used for feeding back whether the data carried on the resource unit is successfully transmitted or not in the downlink transmission. For any resource unit in downlink transmission, in uplink transmission, corresponding resource particles are used for feeding back whether data carried on the resource unit is successfully transmitted or not.

302. The first receiving device receives first data carried on the resource unit.

303. The first receiving device sends a short training sequence field to the sending device.

Here, the first device may further send the long training sequence field to the sending device after step 303.

304. And the first receiving equipment loads the response information on the N resource particles corresponding to the resource units and sends the response information to the sending equipment.

Wherein the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

In a specific implementation, the first receiving device obtains the response information by repeatedly coding the data reception success identifier, or obtains the response information by repeatedly coding the data reception failure identifier. And the N resource particles corresponding to the resource unit all bear the data receiving success identification, or the N resource particles corresponding to the resource unit all bear the data receiving failure identification.

305. And the sending equipment receives response information sent by the first receiving equipment loaded on the N resource particles corresponding to the resource units.

If the N resource particles corresponding to the resource unit all bear the successful data receiving identifier, the sending device does not need to send the first data again; if the N resource particles corresponding to the resource unit all bear the data reception failure identifier, the sending device needs to send the first data again.

Example 4:

an embodiment of the present invention provides a feedback method, as shown in fig. 7, where the method includes the following steps:

401. the AP sends first data to the first STA through the M resource units, and sends second data to the second STA through the M resource units.

The resource unit is a resource unit in downlink transmission and corresponds to N resource particles in uplink transmission. Therefore, the M resource units correspond to N × M resource elements in uplink transmission.

402. The first STA receives first data.

403. The second STA receives the second data.

404. And the first STA loads a first sequence representing whether the first receiving equipment successfully receives the data on the N resource particles corresponding to the resource units and sends the first sequence to the sending equipment.

405. And the second STA loads a second sequence representing whether the second receiving equipment successfully receives the data on the N resource particles corresponding to the resource units and sends the second sequence to the sending equipment.

Wherein the first sequence is orthogonal to the second sequence. Specifically, if the AP transmits data to two STAs through 3 resource units (each resource unit corresponds to 4 resource elements). The first STA sends aaa or-a-a-a on 12 resource elements corresponding to the 3 resource units according to the success or failure of data reception, wherein a occupies 4 resource elements. And the second STA sends bbb or-b-b-b on 12 resource particles corresponding to the 3 resource units according to the success or failure of self receiving, wherein b occupies 4 resources and is orthogonal to a. The AP receives the first response information transmitted by the first STA and the second response information transmitted by the second STA on the 12 resource elements, and decodes the first response information transmitted by the first STA by using an orthogonal code a and decodes the second response information transmitted by the second STA by using an orthogonal code b.

406. And the AP receives first response information and second response information carried on M × N resource particles corresponding to the M resource units.

Wherein the first response information, i.e. the first sequence, represents whether the first receiving device successfully receives the data. The second response information, i.e., the second sequence, represents whether the second receiving device successfully receives the data. The first sequence is orthogonal to the second sequence. The AP decodes using the corresponding orthogonal code to obtain the corresponding response information. Illustratively, the AP decodes the first response information using orthogonal code a and the AP decodes the second response information using orthogonal code b. It is known whether the first STA successfully receives the data.

Example 5:

an embodiment of the present invention provides a feedback method, as shown in fig. 8, where the method includes the following steps:

501. the AP sends first data to the first STA through the M resource units, and sends second data to the second STA through the M resource units.

502. The first STA receives first data.

503. The second STA receives the second data.

504. And the first STA loads the response information of the first STA on the X resource particles corresponding to the M resource units and sends the response information to the AP.

505. And the second STA bears the response information of the second STA on the M N-X resource particles corresponding to the M resource units and sends the response information to the AP.

For example, if the AP transmits data to the first STA and the second STA through 3 resource units, and each resource unit corresponds to 4 resource elements, the 3 resource elements correspond to 12 resource elements in the uplink transmission. If the STA1 transmits the response information to the AP on the 6 resource elements, the STA2 transmits the response information to the AP on the remaining 6 resource elements. If STA1 succeeds in receiving data, the data reception success identifiers are carried on the 6 resource elements corresponding to STA1, and if STA1 fails in receiving data, the data reception failure identifiers are carried on the 6 resource elements corresponding to STA 1.

Example 6:

an embodiment of the present invention provides a sending device 60, and as shown in fig. 9, the sending device 60 includes: transmitting section 601 and receiving section 602.

In addition, for any resource unit in the uplink transmission, corresponding resource particles are used for feeding back whether the data carried on the resource unit is successfully transmitted or not in the downlink transmission. For any resource unit in downlink transmission, in uplink transmission, corresponding resource particles are used for feeding back whether data carried on the resource unit is successfully transmitted or not. The uplink transmission refers to the transmission of data from the user terminal to the base station. The so-called downlink transmission is that the base station transmits data to the user terminal.

A sending unit 601, configured to send data of one or more receiving devices to the one or more receiving devices by bearing on a resource unit.

A receiving unit 602, configured to receive response information sent by the one or more receiving devices carried on N resource particles corresponding to the resource unit; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

And the N resource particles corresponding to the resource unit all bear the data receiving success identification, or the N resource particles corresponding to the resource unit all bear the data receiving failure identification.

The receiving unit 602 is further configured to receive a short training sequence field sent by the one or more receiving devices before receiving response information sent by the one or more receiving devices carried on N resource elements corresponding to the resource unit.

Or, before receiving response information sent by the one or more receiving devices carried on N resource elements corresponding to the resource unit, the sending device 602 receives the short training sequence field and the long training sequence field sent by the one or more receiving devices.

If the sending unit 601 carries the data on M resource units to send to the one or more receiving devices, the receiving unit 602 receives response information transmitted by the one or more receiving devices, which is carried on M × N resource particles corresponding to the M resource units.

If the M resource units only have one CRC check, the M × N resource particles all bear the data receiving success identification, or the M × N resource particles all bear the data receiving failure identification.

The sending unit 601 is specifically configured to send data of a first receiving device and a second receiving device to the first receiving device and the second receiving device by bearing the data on the resource unit;

the receiving unit 602 is further configured to receive first response information, which is carried on the N resource particles corresponding to the resource unit and sent by the first receiving device, and receive second response information, which is carried on the N resource particles corresponding to the resource unit and sent by the second receiving device; wherein the first response information is a first sequence representing whether the first receiving device successfully receives data, and the second response information is a second sequence representing whether the second receiving device successfully receives data; the first sequence is orthogonal to the second sequence, or,

the receiving unit 602 is further configured to receive response information, which is carried on the X resource particles corresponding to the resource unit and sent by the first receiving device, and receive response information, which is carried on the N-X resource particles corresponding to the resource unit and sent by the second receiving device.

According to the equipment for receiving the data, the sending equipment bears the data on the resource units and sends the data to the receiving equipment, and the receiving equipment bears the response information on the resource particles corresponding to the resource units and transmits the response information to the sending equipment. Since the bandwidth can be divided into a plurality of resource units in the frequency domain, a plurality of response information can be fed back at the same time. In this way, the data receiving conditions of multiple receiving devices can be fed back at the same time and the same channel, in contrast, in the prior art, ACK or NACK is used for feeding back the data receiving conditions of the receiving devices, but ACK or NACK transmission occupies the whole bandwidth, that is, only one data receiving device can feed back ACK to a data sending device at the same time and the same channel, and the requirement of a Wi-Fi system with OFDMA introduced cannot be met. The device provided by the embodiment of the invention can meet the requirement of a Wi-Fi system after OFDMA is introduced.

Example 7:

an embodiment of the present invention provides a receiving apparatus 70, as shown in fig. 10, where the receiving apparatus 70 includes: receiving section 701 and transmitting section 702.

A receiving unit 701, configured to receive data carried on a resource unit, where the resource unit carries data of one or more receiving devices including the receiving device.

A sending unit 702, configured to bear the response information on the N resource particles corresponding to the resource unit and send the response information to the sending device; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

The sending device 70 further includes an encoding unit, configured to obtain the response information by repeatedly encoding a data reception success identifier or obtain the response information by repeatedly encoding a data reception failure identifier before the sending unit loads the response information on the N resource elements corresponding to the resource units and sends the response information to the sending device.

The sending unit 702 is further configured to send a short training sequence field to the sending device before carrying response information on the N resource elements corresponding to the resource units and sending the response information to the sending device;

the sending unit 702 is further configured to send the short training sequence field and the long training sequence field to the sending device before carrying response information on the N resource elements corresponding to the resource units and sending the response information to the sending device.

The sending unit 702 is further configured to, if the receiving unit 701 receives the data loaded on the M resource units, load the response information on M × N resource particles corresponding to the M resource units, and send the response information to the sending device.

If the receiving device is a first receiving device, the resource unit is used to carry the sending device to the first receiving device, and the sending unit 702 is further used to,

bearing a first sequence representing whether the first receiving equipment successfully receives the data on the N resource particles corresponding to the resource units and sending the first sequence to the sending equipment; wherein, the N resource elements corresponding to the resource unit are further used for carrying a second sequence representing whether the second receiving device successfully receives the data; the first sequence is orthogonal to the second sequence.

Or, the response information is carried on the X resource particles corresponding to the resource units and sent to the sending device; wherein, the N-X resource particles corresponding to the resource unit are used for carrying response information of the second receiving device.

Example 8:

an embodiment of the present invention provides a sending device 80, and as shown in fig. 11, the sending device 80 may include a processor 801, a system bus 802, a communication interface 803, and a memory 804.

The processor 801 may be a Central Processing Unit (CPU).

A memory 804 for storing a program code and transmitting the program code to the processor 801, and the processor 801 executing the following instructions according to the program code. The memory 804 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory 804 may also include a non-volatile memory (ROM), such as a read-only memory (read-only memory), a flash memory (flash memory), a hard disk (HDD), or a solid-state drive (SSD). The memory 804 may also comprise a combination of the above-described types of memory. The processor 801, the memory 804 and the communication interface 803 are connected by a system bus 802 to complete communication with each other.

The communication interface 803 may be implemented by an optical transceiver, an electrical transceiver, a wireless transceiver, or any combination thereof. For example, the optical transceiver may be a small form-factor pluggable (SFP) transceiver, an enhanced SFP transceiver, or a 10 Gigabit SFP transceiver. The electrical transceiver may be an Ethernet (Ethernet) Network Interface Controller (NIC). The wireless transceiver may be a Wireless Network Interface Controller (WNIC). The sending device 80 may have multiple communication interfaces 803.

A processor 801, configured to send data of one or more receiving devices to the one or more receiving devices on a resource unit through a communication interface 803.

A processor 801, configured to receive response information sent by the one or more receiving devices carried on N resource particles corresponding to the resource unit through a communication interface 803; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

The response information is obtained by the one or more receiving devices by identifying repeated coding for successful data reception or by the one or more receiving devices by identifying repeated coding for failed data reception. And the N resource particles corresponding to the resource unit all bear the data receiving success identification, or the N resource particles corresponding to the resource unit all bear the data receiving failure identification.

The processor 801 is further configured to receive, through the communication interface 803, a short training sequence field sent by the one or more receiving devices before receiving response information sent by the one or more receiving devices carried on N resource elements corresponding to the resource unit;

the processor 801 is further configured to receive, through the communication interface 803, the short training sequence field and the long training sequence field sent by the one or more receiving devices before receiving response information sent by the one or more receiving devices carried on N resource elements corresponding to the resource unit.

If the processor 801 loads the data on the M resource units to send to the one or more receiving devices, the processor 801 is further configured to receive, through the communication interface 803, response information transmitted by the first receiving device, where the response information is loaded on the M × N resource particles corresponding to the M resource units.

If the processor 801 loads the data of the first receiving device and the second receiving device on the resource unit, and sends the data to the first receiving device and the second receiving device. The processor 801 is further configured to receive first response information, which is carried on the N resource particles corresponding to the resource unit and sent by the first receiving device, and receive second response information, which is carried on the N resource particles corresponding to the resource unit and sent by the second receiving device; wherein the first response information is a first sequence representing whether the first receiving device successfully receives data, and the second response information is a second sequence representing whether the second receiving device successfully receives data; the first sequence is orthogonal to the second sequence, or receives response information sent by the first receiving device and carried on X resource particles corresponding to the resource unit, and receives response information sent by the second receiving device and carried on N-X resource particles corresponding to the resource unit.

Example 9:

an embodiment of the present invention provides a receiving device 90, and as shown in fig. 12, the receiving device 90 may include a processor 901, a system bus 902, a communication interface 903, and a memory 904.

The processor 901 may be a Central Processing Unit (CPU).

A memory 904 for storing a program code and transmitting the program code to the processor 901, the processor 901 executing the following instructions according to the program code. The memory 904 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory 904 may also include a non-volatile memory (ROM), such as a read-only memory (read-only memory), a flash memory (flash memory), a hard disk (HDD), or a solid-state drive (SSD). The memory 904 may also comprise a combination of the above-described types of memory. The processor 901, the memory 904, and the communication interface 903 are connected via a system bus 902 to complete communication with each other.

The communication interface 903 may be implemented by an optical transceiver, an electrical transceiver, a wireless transceiver, or any combination thereof. For example, the optical transceiver may be a small form-factor pluggable (SFP) transceiver, an enhanced SFP transceiver, or a 10 Gigabit SFP transceiver. The electrical transceiver may be an Ethernet (Ethernet) Network Interface Controller (NIC). The wireless transceiver may be a Wireless Network Interface Controller (WNIC). The transmitting device 90 may have a plurality of communication interfaces 903.

A processor 901, configured to receive, through a communication interface 903, data carried on a resource unit, where the resource unit carries data of one or more receiving devices including the receiving device.

The processor 901 is further configured to bear response information on the N resource particles corresponding to the resource unit through the communication interface 903 and send the response information to the sending device; the response information represents a successful reception of data on the resource unit or a failed reception of data on the resource unit.

The processor 901 is further configured to obtain the response information by repeatedly encoding a data reception success identifier or obtaining the response information by repeatedly encoding a data reception failure identifier before carrying the response information on the N resource elements corresponding to the resource units and sending the response information to the sending device.

The processor 901 is further configured to send a short training sequence field to the sending device through the communication interface 903 before carrying the response information on the N resource elements corresponding to the resource unit and sending the response information to the sending device.

The processor 901 is further configured to send the short training sequence field and the long training sequence field to the sending device through the communication interface 903 before carrying the response information on the N resource elements corresponding to the resource units and sending the response information to the sending device.

The processor 901 is further configured to, if the data carried on the M resource units is received, carry the response information on M × N resource particles corresponding to the M resource units through the communication interface 903, and send the response information to the sending device.

If the receiving device is a first receiving device, the resource unit is used to carry the sending device to the first receiving device, and the processor is configured to 901, carry a first sequence representing whether the first receiving device successfully receives data on the N resource particles corresponding to the resource unit, and send the first sequence to the sending device; wherein, the N resource elements corresponding to the resource unit are further used for carrying a second sequence representing whether the second receiving device successfully receives the data; the first sequence is orthogonal to the second sequence.

Example 10:

an embodiment of the present invention provides a communication system, including: a transmitting device and a receiving device.

The transmitting device is the transmitting device provided in embodiment 6 above; the receiving apparatus is the receiving apparatus provided in embodiment 7 above.

If the sending equipment is an Access Point (AP), the receiving equipment is a Station (STA); if the sending equipment is the STA, the receiving equipment is the AP; the communication system includes one of the APs and at least one of the STAs. Specifically, in uplink transmission, a plurality of STAs may simultaneously transmit data to the AP. The bandwidth is divided into a plurality of resource units in the frequency domain, and a STA can transmit data to the AP through one or more of the resource units. Other STAs may also transmit data to the AP via one or more resource elements. Likewise, in downlink transmission, the AP may transmit data to one STA through one or more resource elements. The AP may also transmit data to other STAs through one or more resource elements.

In the communication system for the data receiving situation provided by the invention, the sending equipment loads the data on the resource units and sends the data to the receiving equipment, and the receiving equipment loads the response information on the resource particles corresponding to the resource units and transmits the response information to the sending equipment. In this way, the data receiving conditions of multiple receiving devices can be fed back at the same time and the same channel, in contrast, in the prior art, ACK or NACK is used for feeding back the data receiving conditions of the receiving devices, but ACK or NACK transmission occupies the whole bandwidth, that is, only one data receiving device can feed back ACK to a data sending device at the same time and the same channel, and the requirement of a Wi-Fi system with OFDMA introduced cannot be met. The system provided by the embodiment of the invention can meet the requirement of a Wi-Fi system after OFDMA is introduced.

Example 10:

The transmitting device is the transmitting device provided in embodiment 8 above; the receiving apparatus is the receiving apparatus provided in embodiment 9 above.

In the communication system for the data receiving situation provided by the invention, the sending equipment loads the data on the resource units and sends the data to the receiving equipment, and the receiving equipment loads the response information on the resource particles corresponding to the resource units and transmits the response information to the sending equipment. Since the bandwidth can be divided into a plurality of resource units in the frequency domain, a plurality of response information can be fed back at the same time. In this way, the data receiving conditions of multiple receiving devices can be fed back at the same time and the same channel, in contrast, in the prior art, ACK or NACK is used for feeding back the data receiving conditions of the receiving devices, but ACK or NACK transmission occupies the whole bandwidth, that is, only one data receiving device can feed back ACK to a data sending device at the same time and the same channel, and the requirement of a Wi-Fi system with OFDMA introduced cannot be met. The system provided by the embodiment of the invention can meet the requirement of a Wi-Fi system after OFDMA is introduced.

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

Claims

1. A feedback method, characterized in that the method comprises:

the sending equipment receives response information sent by the one or more receiving equipment loaded on N resource particles corresponding to the resource units; the response information represents that the data reception on the resource unit is successful or the data reception on the resource unit is failed;

wherein, the sending device sending data of one or more receiving devices to the one or more receiving devices by bearing the data on the resource unit specifically includes: the sending equipment loads data of a first receiving equipment and a second receiving equipment on the resource unit and sends the data to the first receiving equipment and the second receiving equipment; the receiving, by the sending device, the response information sent by the one or more receiving devices carried on the N resource elements corresponding to the resource unit specifically includes: the sending device receives first response information and second response information, wherein the first response information is carried on N resource particles corresponding to the resource units and is sent by the first receiving device, the second response information is sent by the second receiving device, the first response information is a first sequence representing whether the first receiving device successfully receives data, and the second response information is a second sequence representing whether the second receiving device successfully receives data; the first sequence is orthogonal to the second sequence, or the sending device receives first response information, which is carried on X resource particles corresponding to the resource unit and sent by the first receiving device, and receives second response information, which is carried on N-X resource particles corresponding to the resource unit and sent by the second receiving device.

2. The method of claim 1, wherein if the response message indicates successful data reception on the resource unit, the method further comprises:

3. The method of claim 1, wherein the response information is obtained by the one or more receiving devices by repetition coding for successful identification of data reception or by repetition coding for failed identification of data reception.

4. The method according to any one of claims 1-3, wherein before the sending device receives the response information sent by the one or more receiving devices carried on the N resource elements corresponding to the resource unit, the method further comprises:

5. The method according to any one of claims 1-3, further comprising:

6. The method of claim 4, further comprising:

7. The method of claim 5, wherein if there is only one Cyclic Redundancy Check (CRC) check for the M resource elements, the M x N resource elements all carry the data reception success flag, or the M x N resource elements all carry the data reception failure flag.

8. The method of claim 6, wherein if there is only one Cyclic Redundancy Check (CRC) check for the M resource elements, the M x N resource elements all carry the data reception success flag, or the M x N resource elements all carry the data reception failure flag.

9. A feedback method, characterized in that the method comprises:

the receiving equipment loads response information on the N resource particles corresponding to the resource units and sends the response information to the sending equipment; the response information represents that the data reception on the resource unit is successful or the data reception on the resource unit is failed;

the receiving device is a first receiving device, the resource unit is configured to carry data that is sent to the first receiving device and a second receiving device by the sending device, and the receiving device carries response information on N resource particles corresponding to the resource unit and sends the response information to the sending device specifically includes: the first receiving device sends a first sequence representing whether the first receiving device successfully receives the data to the sending device by bearing the first sequence on the N resource particles corresponding to the resource units; wherein, the N resource elements corresponding to the resource unit are further used for carrying a second sequence representing whether the second receiving device successfully receives the data; the first sequence is orthogonal to the second sequence; or, the first receiving device carries the response information on the X resource particles corresponding to the resource unit and sends the response information to the sending device; wherein, the N-X resource particles corresponding to the resource unit are used for carrying response information of the second receiving device.

10. The method of claim 9, wherein if the response message indicates successful data reception on the resource unit, the method further comprises:

11. The method according to claim 9, wherein before the receiving device carries response information on the N resource elements corresponding to the resource units and sends the response information to the sending device, the method further comprises:

the first receiving device obtains the response information by repeatedly coding the data receiving success identification, or obtains the response information by repeatedly coding the data receiving failure identification.

12. The method according to any of claims 9-11, wherein before the receiving device carries response information on the N resource elements corresponding to the resource units and sends the response information to the sending device, the method further comprises:

transmitting a short training sequence field to the transmitting device;

13. The method according to any one of claims 9-11, further comprising:

if the receiving device receives the data carried on the M resource units, the receiving device carries the response information on M × N resource particles corresponding to the M resource units and sends the response information to the sending device.

14. The method of claim 12, further comprising:

15. The method of claim 13, wherein if there is only one Cyclic Redundancy Check (CRC) check for the M resource elements, the M x N resource elements all carry the data reception success flag, or the M x N resource elements all carry the data reception failure flag.

16. The method of claim 14, wherein if there is only one Cyclic Redundancy Check (CRC) check for the M resource elements, the M x N resource elements all carry the data reception success flag, or the M x N resource elements all carry the data reception failure flag.

17. A transmitting device, comprising:

a receiving unit, configured to receive response information sent by the one or more receiving devices loaded on N resource particles corresponding to the resource unit; the response information represents that the data reception on the resource unit is successful or the data reception on the resource unit is failed;

the sending unit is specifically configured to send data of a first receiving device and a second receiving device to the first receiving device and the second receiving device by bearing the data on the resource unit; the receiving unit is further configured to receive first response information, which is carried on the N resource particles corresponding to the resource unit and sent by the first receiving device, and receive second response information, which is carried on the N resource particles corresponding to the resource unit and sent by the second receiving device; wherein the first response information is a first sequence representing whether the first receiving device successfully receives data, and the second response information is a second sequence representing whether the second receiving device successfully receives data; the first sequence is orthogonal to the second sequence, or the receiving unit is further configured to receive response information, which is carried on X resource particles corresponding to the resource unit and sent by the first receiving device, and receive response information, which is carried on N-X resource particles corresponding to the resource unit and sent by the second receiving device.

18. The transmitting device of claim 17, comprising:

19. The transmitting device of claim 17, wherein the response information is obtained by the one or more receiving devices identifying repetition coding for successful data reception or by the one or more receiving devices identifying repetition coding for failed data reception.

20. The sending apparatus according to any one of claims 17-19, wherein the receiving unit is further configured to receive a short training sequence field sent by the one or more receiving apparatuses before receiving response information sent by the one or more receiving apparatuses carried on N resource elements corresponding to the resource unit;

or, before receiving response information sent by the one or more receiving devices carried on N resource elements corresponding to the resource unit, the sending device receives the short training sequence field and the long training sequence field sent by the one or more receiving devices.

21. The sending device according to any one of claims 17 to 19, wherein if the sending unit sends the data to the one or more receiving devices by bearing the data on M resource elements, the receiving unit is further configured to receive response information transmitted by the one or more receiving devices, which is borne on M × N resource elements corresponding to the M resource elements.

22. The sending device of claim 20, wherein if the sending unit sends the data to the one or more receiving devices by bearing the data on M resource elements, the receiving unit is further configured to receive response information transmitted by the one or more receiving devices, which is borne on M × N resource particles corresponding to the M resource elements.

23. The transmitter apparatus of claim 21, wherein if there is only one CRC check for the M resource elements, the M × N resource elements all carry the data reception success flag, or the M × N resource elements all carry the data reception failure flag.

24. The transmitter apparatus of claim 22, wherein if there is only one CRC check for the M resource elements, the M × N resource elements all carry the data reception success flag, or the M × N resource elements all carry the data reception failure flag.

25. A receiving device, comprising:

the sending unit is used for bearing the response information on the N resource particles corresponding to the resource units and sending the response information to the sending equipment; the response information represents that the data reception on the resource unit is successful or the data reception on the resource unit is failed;

the receiving device is a first receiving device, the resource unit is used for bearing data from the sending device to the first receiving device, and the sending unit is further used for bearing a first sequence representing whether the first receiving device successfully receives data on the N resource particles corresponding to the resource unit and sending the first sequence to the sending device; wherein, the N resource elements corresponding to the resource unit are further used for carrying a second sequence representing whether a second receiving device successfully receives data; the first sequence is orthogonal to the second sequence; or, the response information is carried on the X resource particles corresponding to the resource units and sent to the sending device; wherein, the N-X resource particles corresponding to the resource unit are used for carrying response information of the second receiving device.

26. The receiving device of claim 25, further comprising an encoding unit,

27. The receiving device according to claim 25 or 26, wherein the sending unit is further configured to send a short training sequence field to the sending device before carrying response information on the N resource elements corresponding to the resource units and sending the response information to the sending device;

28. The receiving device according to any one of claims 25 to 26, wherein the sending unit is further configured to, if the receiving unit receives the data carried on M resource elements, carry the response information on M × N resource elements corresponding to the M resource elements, and send the response information to the sending device.

29. The receiving device according to claim 27, wherein the sending unit is further configured to, if the receiving unit receives the data carried on M resource units, carry the response information on M × N resource particles corresponding to the M resource units, and send the response information to the sending device.

30. The receiving device according to claim 28, wherein if there is only one CRC check for the M resource elements, the M × N resource elements all carry the data reception success flag, or the M × N resource elements all carry the data reception failure flag.

31. The receiving device according to claim 29, wherein if there is only one CRC check for the M resource elements, the M × N resource elements all carry the data reception success flag, or the M × N resource elements all carry the data reception failure flag.

32. A communication system, comprising: a sending device and a receiving device, wherein,

the transmitting device is the transmitting device of any one of claims 17 to 24;

the receiving device is the receiving device of any one of claims 25 to 31;