CN107409018A

CN107409018A - A kind of feedback method, equipment and communication system

Info

Publication number: CN107409018A
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: 2017-11-28
Anticipated expiration: 2035-02-28
Also published as: CN107409018B; WO2016134546A1

Abstract

The present invention provides a kind of feedback method, equipment and communication system, is related to the communications field, in same time, the data receiver situation of the multiple receiving devices of same channel feedback, can meet the demand of the Wi Fi systems after introducing OFDMA, including：Equipment is sent to send the Deta bearer of one or more receiving device to one or more of receiving devices on resource unit；The equipment that sends receives the response message for being carried on one or more of receiving devices transmission corresponding to the resource unit in N number of resource particle；The response message represents the data receiver failure on data receiver success or the resource unit on the resource unit.

Description

A kind of feedback method, equipment and communication system

Technical field

The present invention relates to the communications field more particularly to a kind of feedback methods, equipment and communication system.

Background technique

In existing Wi-Fi system, the transmission of uplink and downlink data is all single-point to unicast, i.e. in same time, the same channel, only one STA (Station, website) to AP (Access Point, access point) transmission data, or, in same time, the same channel, an AP only transmits data to a STA.In the prior art, if the success of this data receiver of receiving device, receiving device is to sending device feeding back ACK (Acknowledgement confirms character), to inform the success of this data receiver of sending device.If this data receiver of receiving device fails, feedback information is not sent.

After OFDMA (Orthogonal Frequency Division Multiple Access, the orthogonal frequency division multiple access) technology of introducing, transmitting uplink data will be changed to multiple-point to single-point transmission, and downlink data transmission will be changed to single point-to-multipoint transmission.That is: in same time, the same channel, multiple STA transmit data to AP simultaneously；Or in same time, the same channel, AP transmits data to multiple STA simultaneously.

But in existing Wi-Fi system, the transmission of ACK occupies whole bandwidth, i.e., in same time, same channel, can only have a receiving device to sending device feeding back ACK, be unable to satisfy the demand of the Wi-Fi system after introducing OFDMA.

Summary of the invention

The embodiment of the present invention provides a kind of feedback method, equipment and communication system, can meet the demand of the Wi-Fi system after introducing OFDMA in same time, the data receiver situation of the multiple receiving devices of same channel feedback.

In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that

In a first aspect, disclosing a kind of feedback method, which comprises

Sending device by the Deta bearer of one or more receiving device on resource unit to One or more of receiving devices are sent；

The sending device receives the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

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

If the response message represents the success of the data receiver on the resource unit, the method also includes:

The sending device does not receive the response message within a preset time, then will send on resource unit described in the Deta bearer of one or more of receiving devices to one or more of receiving devices.

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

The response message is that one or more of receiving devices obtain the data receiver success flag repeated encoding or one or more of receiving devices obtain data reception failure duplicate identity coding.

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

Before the sending device receives the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the method also includes:

The sending device receives the short training sequence domain that one or more of receiving devices are sent；

Or, the sending device receives the short training sequence domain and long training sequence domain that one or more of receiving devices are sent.

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

The method also includes:

If the sending device sends the Deta bearer on the M resource units to one or more of receiving devices, the sending device reception is carried on the M The response message of in the corresponding M*N resource particle of the resource unit, one or more of receiving device transmission.

The 4th kind of possible implementation with reference to first aspect, in the fifth possible implementation of the first aspect,

If only one cyclic redundancy check code CRC check of the M resource unit, is carried in the M*N resource particle and carry the data receiver in the data receiver success flag or the M*N resource particle and unsuccessfully identify.

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

The sending device specifically includes the Deta bearer of one or more receiving device on resource unit to the transmission of one or more of receiving devices:

The sending device sends the Deta bearer of the first receiving device and the second receiving device on the resource unit to first receiving device and the second receiving device；

The sending device receives the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent and specifically includes:

The sending device, which receives, is carried on the first response message that in the corresponding N number of resource particle of the resource unit, described first receiving device is sent and the second response message that second receiving device is sent, wherein, first response message be represent first receiving device whether the First ray of successful data reception, second response message be represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence, alternatively,

The sending device, which receives, is carried on the first response message that in the corresponding X resource particle of the resource unit, described first receiving device is sent, and it receives and is carried on the second response message that in the corresponding N-X resource particle of the resource unit, described second receiving device is sent.

Second aspect discloses a kind of feedback method, which comprises

Receiving device receives the data being carried on resource unit, and the data of one or more receiving device including the receiving device are carried on the resource unit；

Response message is carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by the receiving device；The response message represents on the resource unit Data receiver failure in data receiver success or the resource unit.

In conjunction with second aspect, in the first possible implementation of the second aspect,

When the receiving device receives the data failure being carried on the resource unit, the receiving device does not then send the response message to the sending device.

In conjunction with second aspect, in a second possible implementation of the second aspect,

Response message is carried in the corresponding N number of resource particle of the resource unit to before sending device transmission by the receiving device, the method also includes:

The receiving device obtains the response message to data receiver success flag repeated encoding, or obtains the response message to data reception failure duplicate identity coding.

In conjunction with the possible implementation of first or second kind of second aspect or second aspect, in the third possible implementation of the second aspect,

Short training sequence domain is sent to the sending device；

Or the short training sequence domain and long training sequence domain are sent to the sending device.

In conjunction with second aspect or the first or second or the third possible implementation of second aspect, in the fourth possible implementation of the second aspect,

The method also includes: if the receiving device receives the data being carried on the M resource unit, the response message is carried in the corresponding M*N resource particle of the M resource units to sending device transmission by the receiving device.

In conjunction with the 4th kind of possible implementation of second aspect, in a fifth possible implementation of the second aspect,

In conjunction with second aspect, in the sixth possible implementation of the second aspect, the receiving device be the first receiving device, the resource unit for carry the sending device to The data that first receiving device and the second receiving device are sent,

Response message is carried in the corresponding N number of resource particle of the resource unit to sending device transmission and specifically includes by the receiving device:

First receiving device will then represent first receiving device, and whether the First ray of successful data reception is carried in the corresponding N number of resource particle of the resource unit to sending device transmission；Wherein, the corresponding N number of resource particle of the resource unit be also used to carry represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence；Alternatively,

The response message is then carried in the corresponding X resource particle of the resource unit to the sending device and sends by first receiving device；Wherein, the corresponding N-X resource particle of the resource unit is used to carry the response message of second receiving device.

The third aspect discloses a kind of sending device, comprising:

Transmission unit, for sending the Deta bearer of one or more receiving device to one or more of receiving devices on resource unit；

Receiving unit, the response message sent for receiving the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

In conjunction with the third aspect, in the first possible implementation of the third aspect,

The transmission unit is also used to, if the response message represents the success of the data receiver on the resource unit, and the receiving unit does not receive the response message within a preset time, then will send on resource unit described in the Deta bearer of one or more of receiving devices to one or more of receiving devices.

In conjunction with the third aspect, in the second possible implementation of the third aspect,

The response message is that one or more of receiving devices obtain data receiver success flag repeated encoding or one or more of receiving devices obtain data reception failure duplicate identity coding.

In conjunction with the third aspect, in the third possible implementation of the third aspect, the transmission unit will be specifically used for, by the Deta bearer of the first receiving device and the second receiving device It is sent on the resource unit to first receiving device and second receiving device；

The receiving unit is also used to, it receives and is carried on the first response message that in the corresponding N number of resource particle of the resource unit, described first receiving device is sent, receive and be carried on the second response message that in the corresponding N number of resource particle of the resource unit, described second receiving device is sent；Wherein, first response message be represent first receiving device whether the First ray of successful data reception, second response message be represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence, alternatively,

The receiving unit is also used to, it receives and is carried on the response message that in the corresponding X resource particle of the resource unit, described first receiving device is sent, receive and be carried on the response message that in the corresponding N-X resource particle of the resource unit, described second receiving device is sent.

Fourth aspect discloses a kind of receiving device characterized by comprising

Receiving unit carries the data of one or more receiving device including the receiving device for receiving the data being carried on resource unit on the resource unit；

Response message is carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by transmission unit；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

It further include coding unit in the first possible implementation of the fourth aspect in conjunction with fourth aspect,

The coding unit is used for, before response message is carried in the corresponding N number of resource particle of the resource unit and sends to the sending device by the transmission unit, the response message is obtained to data receiver success flag repeated encoding, or the response message is obtained to data reception failure duplicate identity coding.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect, in the second possible implementation of the fourth aspect, the transmission unit is also used to, before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, Xiang Suoshu sending device sends short training sequence domain；

Or, on response message to be carried on to the corresponding N number of resource particle of the resource unit Before sending to the sending device, Xiang Suoshu sending device sends the short training sequence domain and long training sequence domain.

In conjunction with fourth aspect, in the third possible implementation of the fourth aspect, the receiving device is the first receiving device, and the resource unit is for carrying the sending device to first receiving device

The transmission unit is also used to, and representing first receiving device, whether the First ray of successful data reception is carried in the corresponding N number of resource particle of the resource unit to sending device transmission；Wherein, the corresponding N number of resource particle of the resource unit be also used to carry represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence；Alternatively,

The response message is carried in the corresponding X resource particle of the resource unit to the sending device and is sent；Wherein, the corresponding N-X resource particle of the resource unit is used to carry the response message of second receiving device.

5th aspect, discloses a kind of sending device, comprising:

Processor, for being sent the Deta bearer of one or more receiving device to one or more of receiving devices on resource unit by communication interface；

Processor, the response message sent for receiving the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit by communication interface；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect,

The response message is that one or more of receiving devices obtain the response message to data receiver success flag repeated encoding, or obtain the response message to data reception failure duplicate identity coding.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, in second of possible implementation of the 5th aspect,

The processor is also used to, before receiving the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the short training sequence domain that one or more of receiving devices are sent is received by communication interface；

Or, before receiving the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the short training sequence domain, the long training sequence domain that one or more of receiving devices are sent are received by communication interface.

6th aspect, discloses a kind of receiving device, comprising:

Processor carries the data of one or more receiving device including the receiving device for receiving the data being carried on resource unit by communication interface on the resource unit；

The processor is also used to, and response message is carried in the corresponding N number of resource particle of the resource unit to the sending device by communication interface and is sent；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect,

The processor is also used to, before being sent on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, the response message is obtained to data receiver success flag repeated encoding, or the response message is obtained to data reception failure duplicate identity coding.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect, in second of possible implementation of the 6th aspect,

Processor is also used to, and before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, sends short training sequence domain to the sending device by communication interface；

Or, sending the short training sequence domain, long training sequence domain to the sending device by communication interface before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device.

7th aspect, discloses a kind of communication system, comprising: sending device and receiving device,

The sending device is sending device described in the above-mentioned technical proposal third aspect, and the receiving device is receiving device described in the above-mentioned technical proposal third aspect；

Or, the sending device is sending device described in the 5th aspect of above-mentioned technical proposal； The receiving device is receiving device described in the 6th aspect of above-mentioned technical proposal；

Wherein, if the sending device is access point AP, the receiving device is site STA；If the sending device is the STA, the receiving device is the AP；The communication system includes an AP and at least one described STA.

Feedback method, equipment and communication system provided by the invention, sending device sends Deta bearer on resource unit to receiving device, and response message (representing the information of data receiver success or not) is carried in the corresponding resource particle of the resource unit to the sending device transmits again by receiving device.Since bandwidth can be divided into multiple resource units on frequency domain, multiple response messages can be fed back simultaneously.The demand of the Wi-Fi system after introducing OFDMA can be can satisfy in same time, the data receiver situation of the multiple receiving devices of same channel feedback in this way.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the drawings to be used in the description of the embodiments or prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the schematic diagram of existing resource grid；

Fig. 2 is the flow diagram of the feedback method for the data receiver situation that the embodiment of the present invention 1 provides；

Fig. 3 (a) is the structural schematic diagram of existing ACK transmission frame；

Fig. 3 (b) is a kind of structural schematic diagram of ACK transmission frame provided by the invention；

Fig. 3 (c) is a kind of another structural schematic diagram of ACK transmission frame provided by the invention；

Fig. 4 is the carrying schematic diagram of resource particle provided in an embodiment of the present invention；

Fig. 5 is the flow diagram of the feedback method for the data receiver situation that the embodiment of the present invention 2 provides；

Fig. 6 is the flow diagram of the feedback method for the data receiver situation that the embodiment of the present invention 3 provides；

Fig. 7 is the flow diagram of the feedback method for the data receiver situation that the embodiment of the present invention 4 provides；

Fig. 8 is the flow diagram of the feedback method for the data receiver situation that the embodiment of the present invention 5 provides；

Fig. 9 is the structural block diagram for the sending device that the embodiment of the present invention 6 provides；

Figure 10 is the structural block diagram for the receiving device that the embodiment of the present invention 7 provides；

Figure 11 is the structural block diagram for the sending device that the embodiment of the present invention 8 provides；

Figure 12 is the structural block diagram for the receiving device that the embodiment of the present invention 9 provides.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.

In existing Wi-Fi system, including being based on IEEE (Institute of Electrical and Electronics Engineers, American Electronic the Institution of Electrical Engineers) 802.11a legacy (tradition) system, HT (High Throughput based on IEEE 802.11n, high-throughput) system and VHT (the Very High Throughput based on IEEE 802.11ac, very high-throughput) system, transmitting uplink data is all single-point to unicast, i.e. in the same time, same in other words section of frequency spectrum of the same channel, only one STA transmits data to AP.Downlink data transmission is also single-point to unicast, i.e., in same time, same section of frequency spectrum, AP is only transmitted to a STA.And the Wi-Fi system after introducing OFDMA technology, or HEW (High Efficiency WLAN, efficient WLAN) in system, transmitting uplink data will no longer be single-point to unicast, but multiple-point to single-point transmission, i.e. in same time, the same channel or same section of frequency spectrum, there are multiple STA to transmit data to AP simultaneously；Downlink data transmission is also no longer single-point to unicast, but single point-to-multipoint transmission, i.e., in same time, the same channel or same section of frequency spectrum, AP transmits data to multiple STA simultaneously.

In existing Wi-Fi system, fed back using ACK or NACK to sending device The data receiver situation of receiving device.Wherein, ACK indicates that receiving device successful data reception, NACK indicate the failure of receiving device data receiver, and sending device needs to transmit data again to receiving device after receiving NACK.The physical layer frame format of ACK (NACK) transmission frame are as follows: leading part+content part.Wherein leading part includes that Legacy practices sequence domain, traditional long training sequence domain, traditional signaling message domain.The MAC layer format of ACK (NACK) content part includes frame control domain, duration domain, receiving device address and frame control sequence.

Since the transmission of ACK frame occupies whole bandwidth, same time, the same channel or same section of frequency spectrum, an ACK frame (the data receiver situation that can only feed back a receiving device) can only be transmitted, the demand of the Wi-Fi system after introducing OFDMA is unable to satisfy.In addition, the content in frame format is more, consumed resource overhead is too big.

In addition, making resource particle involved in the embodiment of the present invention, resource unit to explain.As shown in Figure 1, the signal that a column can be used to indicate to transmit in a time slot, a line indicates that a subcarrier uploads defeated information.In diagram 1, RE (resource element) resource particle i.e. of the present invention, resource unit is made of A*B resource particle.Wherein, A represents A symbol, and B represents B subcarrier.It should be noted that, existing ACK feedback is based on user terminal design, a data are sent to a user terminal, the user terminal will feed back an ACK/NACK to sending device, the present invention is based on resource units to design ACK feedback information, Deta bearer is sent into data to receiving device on a resource unit, receiving device will transmit a feedback information to sending device according to whether data transmission success on the resource unit, to inform whether the transmission of the data on the sending device resource unit succeeds.In the prior art, ACK transmission occupies whole bandwidth, i.e. ACK transmission occupies 20MHz.As shown in connection with fig. 1, ACK transmission can occupy all subcarriers on Fig. 1 frequency domain.In the application, receiving device utilizes a resource unit to sending device feedback data reception condition, since bandwidth can be divided into multiple resource units on frequency domain, multiple response messages (representing the information of data receiver situation) can be fed back simultaneously.

It should be pointed out that receiving device can not also send any feedback information when data transmission fails.

Embodiment 1:

The embodiment of the present invention provides a kind of feedback method, is applied to sending device, which sets The standby AP or STA that can be in the Wi-Fi system after being introduced into OFDMA, as shown in Fig. 2, the described method comprises the following steps:

101, sending device sends the Deta bearer of one or more receiving device on resource unit to one or more of receiving devices.

Wherein, the sending device can be AP, and the receiving device can be STA.Alternatively, the sending device is STA, the receiving device is AP.Specifically, in uplink, multiple STA can send data to AP simultaneously.Bandwidth is divided on frequency domain can be divided into multiple resource units, and a STA can send data to AP by one or more of resource units.Other STA can also send data to AP by one or more resource units.Likewise, AP can send data to a STA by one or more resource units in downlink transfer.AP can also send data to other STA by one or more resource units.From the angle of resource unit, the data (downlink transfer) of one or more receiving device can be carried or carry the data (uplink) of one or more sending device.

In addition, for any resource unit in uplink, have corresponding resource particle in downlink transfer feed back the data carried on the resource unit whether transmission success.For any resource unit in downlink transfer, in uplink, have corresponding resource particle feed back the data carried on the resource unit whether transmission success.So-called uplink, i.e. user terminal transmit data to AP.So-called downlink transfer, i.e. AP transmit data to user terminal.Illustratively, with reference to Fig. 1, resource unit 1 transmits data to STA1 for AP, there is data receiver situation of the resource particle corresponding with resource unit 1 for STA1 to AP feedback STA1 in uplink.In uplink, resource particle corresponding with resource unit 1 can be the resource particle with resource unit 1 with frequency range, as shown in figure 1 the resource particle in frequency range locating for resource unit 1, as: the resource particle in region 1 shown in Fig. 1 in resource particle or region 2.Resource particle corresponding with resource unit 1 is also possible to the resource particle with resource unit different frequency range, as shown in figure 1 the resource particle in frequency range locating for resource unit 2, the resource particle in region 3 as shown in Figure 1 or the resource particle in region 4.Resource unit and the corresponding relationship of resource particle are preset by system, it is not limited here.

102, the sending device reception is carried on the corresponding N number of resource of the resource unit The response message that one or more of receiving devices on particle are sent；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

In the specific implementation, the response message is that one or more of receiving devices obtain data receiver success flag repeated encoding or one or more of receiving devices obtain data reception failure duplicate identity coding.Wherein, it is carried in N number of resource particle and carries the data receiver in the data receiver success flag or N number of resource particle and unsuccessfully identify.

Exemplary, can be indicates the success of receiving device data receiver with 1, and use 0 indicates that receiving device data receiver fails.Alternatively, indicating that the success of receiving device data receiver, the failure of receiving device data receiver then do not transmit any response message to sending device with 1.It should be noted that response message is then carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by receiving device since sending device is to send Deta bearer to receiving device on a resource unit.Such as: if corresponding 4 resource particles of the resource unit, and receiving device data receiver is successful, carries 1 in this 4 resource particles.Transmitting terminal receives 1 (i.e. 1111) carried in this 4 resource particles, and then judges the success of receiving device data receiver.

It should be noted that before the sending device receives the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the method also includes:

The sending device receives the short training sequence domain that one or more of receiving devices are sent.

Referenced in schematic 3 (a), it is the structural schematic diagram of the ACK transmission frame of the prior art, it include: the frame structure in short training sequence domain, long training sequence domain, signaling domain, ACK content part, method provided by the invention, transmission signaling domain is not needed, or is not required to transmit long training sequence domain and signaling domain to receiving device.It is exemplary, if Fig. 3 (b) is a kind of structural schematic diagram of ACK transmission frame provided by the invention, comprising: STF (short training sequence domain), DATA (ACK content part).If Fig. 3 (c) is the structural schematic diagram of another kind ACK transmission frame provided by the invention, comprising: STF (short training sequence domain), LTF (long training sequence domain), ACK content part.In addition, in conjunction with Fig. 3 (b), the present invention is provided in hungry method, ACK content part relatively tails off compared with the existing technology, it include: the data receiver success flag carried in the corresponding resource particle of resource unit, or data receiver unsuccessfully identifies or data receiver success flag and data receiver unsuccessfully identify.Such as: if sending device sends Deta bearer on a resource unit to receiving device, and corresponding 4 resource particles of the resource unit, when the success of receiving device data receiver, ACK content part is exactly 1111.In this way, reducing signalling load, and the resource occupied is less, improves the resource utilization of system.

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

The sending device then receives the first response message that first receiving device be carried in the corresponding N number of resource particle of resource unit 1, described is sent；It receives and is carried on the second response message that in the corresponding N number of resource particle of resource unit 2, described second receiving device is sent.

In preferred implementation of the invention, if the response message represents the success of the data receiver on the resource unit, the method also includes:

In a preferred embodiment of the invention, if the sending device sends the Deta bearer on M resource units to one or more of receiving devices, the sending device receives the response message that receiving devices be carried in the corresponding M*N resource particle of the M resource units, one or more of transmit.

In addition, if described only one CRC check of M resource unit, is carried in the M*N resource particle and carry the data receiver in the data receiver success flag or the M*N resource particle and unsuccessfully identify.

It is exemplary, in conjunction with Fig. 4, if sending device sends Deta bearer in 3 resource units (resource unit 1, resource unit 2, resource unit 3 are corresponding) to receiving device, and corresponding 4 resource particles of each resource unit, when the success of receiving device data receiver, what is carried in corresponding 12 (4*3) a resource particle of this 3 resource units is 1, i.e., resource unit 1, resource unit 2, carry 1 in the corresponding resource particle of resource unit 3.

In a preferred embodiment of the invention, the sending device specifically includes the Deta bearer of one or more receiving device on resource unit to the transmission of one or more of receiving devices: the sending device sends the Deta bearer of the first receiving device and the second receiving device on the resource unit to first receiving device and the second receiving device.

Illustratively, there are an AP, at least one STA in the Wi-Fi system after being introduced into OFDMA.It here is that AP transmits data to multiple STA simultaneously.It should be noted that AP is usually to pass through M resource unit to transmit data at least one STA.If AP transmits data to 2 STA by M resource unit, it is used for the first STA feedback response information (i.e. data receiver situation) in the corresponding M*N resource particle of this M resource unit, while being used for the 2nd STA feedback response information.It is exemplary, if AP transmits the first Deta bearer on a resource unit to the first STA, and the second Deta bearer is transmitted on the resource unit to the 2nd STA.First STA is according to oneself data receiver success or not, in this money Orthogonal sequence a or-a is sent in corresponding 4 resource particles of source unit, wherein sequence a indicates that the first STA successful data reception, sequence-a indicate the failure of the first STA data receiver.Sequence a ,-a occupy 4 resource particles.2nd STA sends orthogonal sequence b or-b according to oneself data receiver success or not in corresponding 4 resource particles of this resource unit, and wherein sequence b indicates that the first STA successful data reception, sequence-b indicate the failure of the first STA data receiver.Sequence b ,-b occupy 4 resource particles.Sequence a, b is mutually orthogonal.AP receives the second response message of the first response message of the first STA transmission, the 2nd STA transmission in corresponding 4 resource particles of this resource unit, and the first response message that the first STA is sent is decoded using orthogonal code a, the second response message that the 2nd STA is sent is decoded using orthogonal code b.

Alternatively, AP transmits data to two STA by 3 resource units (corresponding 4 resource particles of each resource unit).First STA sends aaa or-a-a-a according to oneself data receiver success or not in corresponding 12 resource particles of this 3 resource units, and wherein a occupies 4 resource particles.2nd STA receives success or not according to oneself, and bbb or-b-b-b is sent in corresponding 12 resource particles of this 3 resource units, and wherein b occupies 4 resources, and b is orthogonal with a.AP receives the second response message of the first response message of the first STA transmission, the 2nd STA transmission in this 12 resource particles, and the first response message that the first STA is sent is decoded using orthogonal code a, the second response message that the 2nd STA is sent is decoded using orthogonal code b.

If AP transmits data to 2 STA by M resource unit, X in the corresponding M*N resource particle of this M resource unit is used for the first STA feedback response information (i.e. data receiver situation), remaining corresponding M*N-X resource particle of this M resource unit is used for the 2nd STA feedback response information.Exemplary, AP is usually to pass through 3 resource units (corresponding 4 resource particles of each resource unit) to transmit data at least one STA.If AP transmits data to 2 STA by M resource unit, for 4 resource particles corresponding for each resource unit, 2 resource particles above can be used for the first STA feedback response information, happiness is used for the 2nd STA feedback response information with 2 following resource particles.As a whole, 6 in corresponding 12 resource particles of this 3 resource units are used for the first STA feedback response information (i.e. data receiver situation), this 3 resource units are corresponding Remaining 6 resource particle be used for the 2nd STA feedback response information.

The feedback method of data receiver situation provided by the invention, sending device send Deta bearer on resource unit to receiving device, and response message is carried in the corresponding resource particle of the resource unit to the sending device transmits again by receiving device.Since bandwidth can be divided into multiple resource units on frequency domain, multiple response messages can be fed back simultaneously.It in this way can be in same time, the data receiver situation of the multiple receiving devices of same channel feedback, in comparison, the prior art utilizes the data receiver situation of ACK or NACK feedback reception equipment, but the transmission of ACK or NACK occupies whole bandwidth, i.e. in same time, same channel, there can only be a data receiver to data transmitting equipment feeding back ACK, be unable to satisfy the demand of the Wi-Fi system after introducing OFDMA.The method that the embodiment of the present invention provides can satisfy the demand of the Wi-Fi system after introducing OFDMA.

Embodiment 2:

The embodiment of the present invention provides a kind of feedback method, and executing subject is receiving device, as shown in figure 5, the described method comprises the following steps:

201, receiving device receives the data being carried on resource unit, and the data of one or more receiving device including the receiving device are carried on the resource unit.

Wherein, the sending device can be AP, and the receiving device can be STA.Alternatively, the sending device is STA, the receiving device is AP.

202, response message is carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by the receiving device；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

In the specific implementation, institute's receiving device obtains the response message to data receiver success flag repeated encoding, or obtains the response message to data reception failure duplicate identity coding.Wherein, it is carried in N number of resource particle and carries the data receiver in the data receiver success flag or N number of resource particle and unsuccessfully identify.

Exemplary, can be indicates the success of receiving device data receiver with 1, and use 0 indicates that receiving device data receiver fails.Alternatively, indicating that the success of receiving device data receiver, the failure of receiving device data receiver then do not transmit any response message to sending device with 1.It should be noted that since sending device is to send out Deta bearer to receiving device on a resource unit It send, response message is then carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by receiving device.Such as: if corresponding 4 resource particles of the resource unit, and receiving device data receiver is successful, carries 1 in this 4 resource particles.Transmitting terminal receives 1 (i.e. 1111) carried in this 4 resource particles, and then judges the success of receiving device data receiver.

Embodiment 3:

The embodiment of the present invention provides a kind of feedback method, as shown in fig. 6, the described method comprises the following steps:

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

Wherein, the sending device can be AP, and the receiving device can be STA.Alternatively, the sending device is STA, the receiving device is AP.Specifically, in uplink, multiple STA can send data to AP simultaneously.Bandwidth is divided on frequency domain can be divided into multiple resource units, and a STA can send data to AP by one or more of resource units.Other STA can also send data to AP by one or more resource units.Likewise, AP can send data to a STA by one or more resource units in downlink transfer.AP can also send data to other STA by one or more resource units.

In addition, for any resource unit in uplink, have in downlink transfer pair The resource particle answered feed back the data carried on the resource unit whether transmission success.For any resource unit in downlink transfer, in uplink, have corresponding resource particle feed back the data carried on the resource unit whether transmission success.

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

303, the first receiving device sends short training sequence domain to the sending device.

Here the first equipment can also after step 303, then to the sending device send long training sequence domain.

304, response message is carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by the first receiving device.

Wherein, the response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

In the specific implementation, first receiving device obtains the response message to data receiver success flag repeated encoding, or obtains the response message to data reception failure duplicate identity coding.Wherein, it is carried in the corresponding N number of resource particle of the resource unit and carries the data receiver in the data receiver success flag or the corresponding N number of resource particle of the resource unit and unsuccessfully identify.

305, the sending device receives the response message that first receiving device being carried in the corresponding N number of resource particle of the resource unit is sent.

If carrying data receiver success flag in the corresponding N number of resource particle of the resource unit, the sending device does not need to send the first data again；If the resource unit pair It carries data receiver in the N number of resource particle answered unsuccessfully to identify, the sending device then needs to send the first data again.

Embodiment 4:

The embodiment of the present invention provides a kind of feedback method, as shown in fig. 7, the described method comprises the following steps:

401, AP sends the first data to the first STA by M resource unit, sends the second data to the 2nd STA by this M resource unit.

Wherein, the resource unit is the resource unit in downlink transfer, N number of resource particle in corresponding uplink.Therefore, the M resource unit corresponds to N*M resource particle in uplink.

402, the first STA receives the first data.

403, the 2nd STA receives the second data.

404, the first STA will then represent first receiving device whether the First ray of successful data reception be carried in the corresponding N number of resource particle of the resource unit to the sending device send.

405, the 2nd STA will then represent second receiving device whether the second sequence of successful data reception be carried in the corresponding N number of resource particle of the resource unit to the sending device send.

Wherein, First ray is orthogonal with the second sequence.Specifically, if AP passes through 3 moneys Source unit (corresponding 4 resource particles of each resource unit) transmits data to two STA.First STA sends aaa or-a-a-a according to oneself data receiver success or not in corresponding 12 resource particles of this 3 resource units, and wherein a occupies 4 resource particles.2nd STA receives success or not according to oneself, and bbb or-b-b-b is sent in corresponding 12 resource particles of this 3 resource units, and wherein b occupies 4 resources, and b is orthogonal with a.AP receives the second response message of the first response message of the first STA transmission, the 2nd STA transmission in this 12 resource particles, and the first response message that the first STA is sent is decoded using orthogonal code a, the second response message that the 2nd STA is sent is decoded using orthogonal code b.

406, AP receives the first response message, the second response message being carried in the corresponding M*N resource particle of the M resource unit.

Wherein, first response message, that is, First ray, represent first receiving device whether successful data reception.Second response message i.e. the second sequence, represent second receiving device whether successful data reception.The First ray is orthogonal with second sequence.AP is decoded using corresponding orthogonal code, obtains corresponding response message.Exemplary, AP decodes the first response message using orthogonal code a, and AP decodes the second response message using orthogonal code b.Can know the first STA, the first STA whether successful data reception.

Embodiment 5:

The embodiment of the present invention provides a kind of feedback method, as shown in figure 8, the described method comprises the following steps:

501, AP sends the first data to the first STA by M resource unit, sends the second data to the 2nd STA by this M resource unit.

502, the first STA receives the first data.

503, the 2nd STA receives the second data.

504, the response message of itself is carried in the corresponding X resource particle of the M resource unit to AP and sends by the first STA.

505, the response message of itself is carried in the corresponding M*N-X resource particle of the M resource unit to AP and sends by the 2nd STA.

Exemplary, if AP sends data, and corresponding 4 resource particles of each resource unit to the first STA, the 2nd STA by 3 resource units, then this 3 resource particles correspond to 12 resource particles in uplink.If response message is carried in 6 resource particles therein to AP and sends by STA1, response message is carried in remaining 6 resource particles to AP and sends by STA2.If the success of STA1 data receiver, data receiver success flag is carried in corresponding 6 resource particles of STA1, if STA1 data receiver fails, data receiver is carried in corresponding 6 resource particles of STA1 and unsuccessfully identifies.

Embodiment 6:

The embodiment of the invention provides a kind of sending devices 60, as shown in figure 9, sending device 60 includes: transmission unit 601, receiving unit 602.

In addition, for any resource unit in uplink, have corresponding resource particle in downlink transfer feed back the data carried on the resource unit whether transmission success.For any resource unit in downlink transfer, in uplink, have corresponding resource particle feed back the data carried on the resource unit whether transmission success.So-called uplink, i.e. user terminal transmit data to base station.So-called downlink transfer, i.e. base station transmit data to user terminal.

Transmission unit 601, for sending the Deta bearer of one or more receiving device to one or more of receiving devices on resource unit.

Receiving unit 602, the response message sent for receiving the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

It is carried in the corresponding N number of resource particle of the resource unit and carries the data receiver in the data receiver success flag or the corresponding N number of resource particle of the resource unit and unsuccessfully identify.

The receiving unit 602 is also used to, and it is corresponding to be carried on the resource unit in reception Before the response message that one or more of receiving devices in N number of resource particle are sent, the short training sequence domain that one or more of receiving devices are sent is received.

Or, before receiving the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the sending device 602 receives the short training sequence domain and long training sequence domain that one or more of receiving devices are sent.

If the transmission unit 601 sends the Deta bearer on M resource units to one or more of receiving devices, the receiving unit 602 receives the response message that receiving devices be carried in the corresponding M*N resource particle of the M resource units, one or more of transmit.

If described only one CRC check of M resource unit, is carried in the M*N resource particle and carry the data receiver in the data receiver success flag or the M*N resource particle and unsuccessfully identify.

The transmission unit 601 will be specifically used for, and the Deta bearer of the first receiving device and the second receiving device is sent on the resource unit to first receiving device and second receiving device；

The receiving unit 602 is also used to, it receives and is carried on the first response message that in the corresponding N number of resource particle of the resource unit, described first receiving device is sent, receive and be carried on the second response message that in the corresponding N number of resource particle of the resource unit, described second receiving device is sent；Wherein, first response message be represent first receiving device whether the First ray of successful data reception, second response message be represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence, alternatively,

The receiving unit 602 is also used to, it receives and is carried on the response message that in the corresponding X resource particle of the resource unit, described first receiving device is sent, receive and be carried on the response message that in the corresponding N-X resource particle of the resource unit, described second receiving device is sent.

Illustratively, there are an AP, at least one STA in the Wi-Fi system after being introduced into OFDMA.It here is that AP transmits data to multiple STA simultaneously.It should be noted that AP Data are usually transmitted at least one STA by M resource unit.If AP transmits data to 2 STA by M resource unit, it is used for the first STA feedback response information (i.e. data receiver situation) in the corresponding M*N resource particle of this M resource unit, while being used for the 2nd STA feedback response information.It is exemplary, if AP transmits the first Deta bearer on a resource unit to the first STA, and the second Deta bearer is transmitted on the resource unit to the 2nd STA.First STA sends orthogonal sequence a or-a according to oneself data receiver success or not in corresponding 4 resource particles of this resource unit, and wherein sequence a indicates that the first STA successful data reception, sequence-a indicate the failure of the first STA data receiver.Sequence a ,-a occupy 4 resource particles.2nd STA sends orthogonal sequence b or-b according to oneself data receiver success or not in corresponding 4 resource particles of this resource unit, and wherein sequence b indicates that the first STA successful data reception, sequence-b indicate the failure of the first STA data receiver.Sequence b ,-b occupy 4 resource particles.Sequence a, b is mutually orthogonal.AP receives the second response message of the first response message of the first STA transmission, the 2nd STA transmission in corresponding 4 resource particles of this resource unit, and the first response message that the first STA is sent is decoded using orthogonal code a, the second response message that the 2nd STA is sent is decoded using orthogonal code b.

If AP transmits data to 2 STA by M resource unit, X in the corresponding M*N resource particle of this M resource unit is used for the first STA feedback response information (i.e. data receiver situation), remaining corresponding M*N-X resource particle of this M resource unit is used for the 2nd STA feedback response information.Exemplary, AP is usually to pass through 3 resource units (corresponding 4 resource particles of each resource unit) transmit data at least one STA.If AP transmits data to 2 STA by M resource unit, for 4 resource particles corresponding for each resource unit, 2 resource particles above can be used for the first STA feedback response information, happiness is used for the 2nd STA feedback response information with 2 following resource particles.As a whole, 6 in corresponding 12 resource particles of this 3 resource units are used for the first STA feedback response information (i.e. data receiver situation), remaining corresponding 6 resource particle of this 3 resource units are used for the 2nd STA feedback response information.

The equipment of data receiver situation provided by the invention, sending device send Deta bearer on resource unit to receiving device, and response message is carried in the corresponding resource particle of the resource unit to the sending device transmits again by receiving device.Since bandwidth can be divided into multiple resource units on frequency domain, multiple response messages can be fed back simultaneously.It in this way can be in same time, the data receiver situation of the multiple receiving devices of same channel feedback, in comparison, the prior art utilizes the data receiver situation of ACK or NACK feedback reception equipment, but the transmission of ACK or NACK occupies whole bandwidth, i.e. in same time, same channel, there can only be a data receiver to data transmitting equipment feeding back ACK, be unable to satisfy the demand of the Wi-Fi system after introducing OFDMA.The equipment that the embodiment of the present invention provides can satisfy the demand of the Wi-Fi system after introducing OFDMA.

Embodiment 7:

The embodiment of the invention provides a kind of receiving devices 70, and as shown in Figure 10, the receiving device 70 includes: receiving unit 701, transmission unit 702.

In addition, for any resource unit in uplink, have in downlink transfer pair The resource particle answered feed back the data carried on the resource unit whether transmission success.For any resource unit in downlink transfer, in uplink, have corresponding resource particle feed back the data carried on the resource unit whether transmission success.So-called uplink, i.e. user terminal transmit data to base station.So-called downlink transfer, i.e. base station transmit data to user terminal.

Receiving unit 701 carries the data of one or more receiving device including the receiving device for receiving the data being carried on resource unit on the resource unit.

Response message is carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by transmission unit 702；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

The sending device 70 further includes coding unit, the coding unit is used for, before response message is carried in the corresponding N number of resource particle of the resource unit and sends to the sending device by the transmission unit, the response message is obtained to data receiver success flag repeated encoding, or the response message is obtained to data reception failure duplicate identity coding.

The transmission unit 702 is also used to, and before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, Xiang Suoshu sending device sends short training sequence domain；

The transmission unit 702 is also used to, and before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, Xiang Suoshu sending device sends the short training sequence domain, long training sequence domain.

The transmission unit 702 is also used to, if the receiving unit 701 receives the data being carried on the M resource unit, the response message is carried in the corresponding M*N resource particle of the M resource units to sending device transmission.

If the receiving device is the first receiving device, for carrying the sending device to first receiving device, the transmission unit 702 is also used to the resource unit,

First receiving device will be represented, and whether the First ray of successful data reception is carried in the corresponding N number of resource particle of the resource unit to sending device transmission；Wherein, the corresponding N number of resource particle of the resource unit be also used to carry represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence.

It is sent alternatively, the response message is carried in the corresponding X resource particle of the resource unit to the sending device；Wherein, the corresponding N-X resource particle of the resource unit is used to carry the response message of second receiving device.

Embodiment 8:

The embodiment of the invention provides a kind of sending devices 80, and as shown in figure 11, which may include processor 801, system bus 802 and communication interface 803 and memory 804.

Wherein, processor 801 can be central processing unit (English: central processing unit, abbreviation: CPU).

Memory 804 is transferred to the processor 801 for storing program code, and by the program code, and processor 801 executes following instructions according to program code.Memory 804 may include volatile memory (English: volatile memory), such as random access memory Device (English: random-access memory, abbreviation: RAM)；Memory 804 also may include nonvolatile memory (English: non-volatile memory), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state hard disk (English: solid-state drive, abbreviation: SSD).Memory 804 can also include the combination of the memory of mentioned kind.It connects by system bus 802 between processor 801, memory 804 and communication interface 803 and completes mutual communication.

Communication interface 803 can be by optical transceiver, electric transceiver, wireless transceiver or any combination thereof realization.Such as, optical transceiver can be Small Form-Factor Pluggable (English: small form-factor pluggable transceiver, abbreviation: SFP) transceiver (English: transceiver), enhance Small Form-Factor Pluggable (English: enhanced small form-factor pluggable, abbreviation: SFP+) transceiver or 10 gigabit Small Form-Factor Pluggables (English: 10Gigabit small form-factor pluggable, abbreviation: XFP) transceiver.Electric transceiver can be Ethernet (English: Ethernet) network interface controller (English: network interface controller, abbreviation: NIC).Wireless transceiver can be radio network interface controller (English: wireless network interface controller, abbreviation: WNIC).Sending device 80 can have multiple communication interfaces 803.

In addition, for any resource unit in uplink, have corresponding resource particle in downlink transfer feed back the data carried on the resource unit whether transmission success.For any resource unit in downlink transfer, in uplink, have corresponding resource particle feed back the data carried on the resource unit whether transmission success.So-called uplink, i.e., User terminal transmits data to base station.So-called downlink transfer, i.e. base station transmit data to user terminal.

Processor 801, for being sent the Deta bearer of one or more receiving device to one or more of receiving devices on resource unit by communication interface 803.

Processor 801, the response message sent for receiving the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit by communication interface 803；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

The response message is that one or more of receiving devices obtain data receiver success flag repeated encoding or one or more of receiving devices obtain data reception failure duplicate identity coding.It is carried in the corresponding N number of resource particle of the resource unit and carries the data receiver in the data receiver success flag or the corresponding N number of resource particle of the resource unit and unsuccessfully identify.

The processor 801 is also used to, before receiving the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the short training sequence domain that one or more of receiving devices are sent is received by communication interface 803；

The processor 801 is also used to, before receiving the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the short training sequence domain and long training sequence domain that one or more of receiving devices are sent are received by communication interface 803.

If the processor 801 sends the Deta bearer on the M resource units to one or more of receiving devices, the processor 801 is also used to, and the response message that first receiving device be carried in the corresponding M*N resource particle of the described resource unit of the M, described transmits is received by the communication interface 803.

If the processor 801 is by the Deta bearer of the first receiving device and the second receiving device It is sent on the resource unit to first receiving device and second receiving device.The processor 801 is also used to, it receives and is carried on the first response message that in the corresponding N number of resource particle of the resource unit, described first receiving device is sent, receive and be carried on the second response message that in the corresponding N number of resource particle of the resource unit, described second receiving device is sent；Wherein, first response message be represent first receiving device whether the First ray of successful data reception, second response message be represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence, or, it receives and is carried on the response message that in the corresponding X resource particle of the resource unit, described first receiving device is sent, receive and be carried on the response message that in the corresponding N-X resource particle of the resource unit, described second receiving device is sent.

Illustratively, there are an AP, at least one STA in the Wi-Fi system after being introduced into OFDMA.It here is that AP transmits data to multiple STA simultaneously.It should be noted that AP is usually to pass through M resource unit to transmit data at least one STA.If AP transmits data to 2 STA by M resource unit, it is used for the first STA feedback response information (i.e. data receiver situation) in the corresponding M*N resource particle of this M resource unit, while being used for the 2nd STA feedback response information.It is exemplary, if AP transmits the first Deta bearer on a resource unit to the first STA, and the second Deta bearer is transmitted on the resource unit to the 2nd STA.First STA sends orthogonal sequence a or-a according to oneself data receiver success or not in corresponding 4 resource particles of this resource unit, and wherein sequence a indicates that the first STA successful data reception, sequence-a indicate the failure of the first STA data receiver.Sequence a ,-a occupy 4 resource particles.2nd STA sends orthogonal sequence b or-b according to oneself data receiver success or not in corresponding 4 resource particles of this resource unit, and wherein sequence b indicates that the first STA successful data reception, sequence-b indicate the failure of the first STA data receiver.Sequence b ,-b occupy 4 resource particles.Sequence a, b is mutually orthogonal.AP receives the second response message of the first response message of the first STA transmission, the 2nd STA transmission in corresponding 4 resource particles of this resource unit, and the first response message that the first STA is sent is decoded using orthogonal code a, the second response message that the 2nd STA is sent is decoded using orthogonal code b.

Alternatively, AP passes through 3 resource units (corresponding 4 resource particles of each resource unit) Data are transmitted to two STA.First STA sends aaa or-a-a-a according to oneself data receiver success or not in corresponding 12 resource particles of this 3 resource units, and wherein a occupies 4 resource particles.2nd STA receives success or not according to oneself, and bbb or-b-b-b is sent in corresponding 12 resource particles of this 3 resource units, and wherein b occupies 4 resources, and b is orthogonal with a.AP receives the second response message of the first response message of the first STA transmission, the 2nd STA transmission in this 12 resource particles, and the first response message that the first STA is sent is decoded using orthogonal code a, the second response message that the 2nd STA is sent is decoded using orthogonal code b.

If AP transmits data to 2 STA by M resource unit, X in the corresponding M*N resource particle of this M resource unit is used for the first STA feedback response information (i.e. data receiver situation), remaining corresponding M*N-X resource particle of this M resource unit is used for the 2nd STA feedback response information.Exemplary, AP is usually to pass through 3 resource units (corresponding 4 resource particles of each resource unit) to transmit data at least one STA.If AP transmits data to 2 STA by M resource unit, for 4 resource particles corresponding for each resource unit, 2 resource particles above can be used for the first STA feedback response information, happiness is used for the 2nd STA feedback response information with 2 following resource particles.As a whole, 6 in corresponding 12 resource particles of this 3 resource units are used for the first STA feedback response information (i.e. data receiver situation), remaining corresponding 6 resource particle of this 3 resource units are used for the 2nd STA feedback response information.

Embodiment 9:

The embodiment of the invention provides a kind of receiving devices 90, and as shown in figure 12, which may include processor 901, system bus 902 and communication interface 903 and memory 904.

Wherein, processor 901 can be central processing unit (English: central processing unit, abbreviation: CPU).

Memory 904 is transferred to the processor 901 for storing program code, and by the program code, and processor 901 executes following instructions according to program code.Memory 904 may include volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM)；Memory 904 also may include nonvolatile memory (English: non-volatile memory), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state hard disk (English: solid-state drive, abbreviation: SSD).Memory 904 can also include the combination of the memory of mentioned kind.It connects by system bus 902 between processor 901, memory 904 and communication interface 903 and completes mutual communication.

Communication interface 903 can be by optical transceiver, electric transceiver, wireless transceiver or any combination thereof realization.Such as, optical transceiver can be Small Form-Factor Pluggable (English: small form-factor pluggable transceiver, abbreviation: SFP) transceiver (English: transceiver), enhance Small Form-Factor Pluggable (English: enhanced small form-factor pluggable, abbreviation: SFP+) transceiver or 10 gigabit Small Form-Factor Pluggables (English: 10Gigabit small form-factor pluggable, abbreviation: XFP) transceiver.Electric transceiver can be Ethernet (English: Ethernet) network interface controller (English: network interface controller, abbreviation: NIC).Wireless transceiver can be radio network interface controller (English: wireless network interface controller, abbreviation: WNIC).Sending device 90 can have multiple communication interfaces 903.

Wherein, the sending device can be AP, and the receiving device can be STA.Alternatively, the sending device is STA, the receiving device is AP.Specifically, in uplink, multiple STA can send data to AP simultaneously.Bandwidth is divided on frequency domain to divide For multiple resource units, a STA can send data to AP by one or more of resource units.Other STA can also send data to AP by one or more resource units.Likewise, AP can send data to a STA by one or more resource units in downlink transfer.AP can also send data to other STA by one or more resource units.

Processor 901 carries the data of one or more receiving device including the receiving device for receiving the data being carried on resource unit by communication interface 903 on the resource unit.

The processor 901 is also used to, and response message is carried in the corresponding N number of resource particle of the resource unit to the sending device by communication interface 903 and is sent；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.

The processor 901 is also used to, before being sent on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, the response message is obtained to data receiver success flag repeated encoding, or the response message is obtained to data reception failure duplicate identity coding.

Processor 901 is also used to, and before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, sends short training sequence domain to the sending device by communication interface 903.

Processor 901 is also used to, corresponding response message is carried on the resource unit Before sending in N number of resource particle to the sending device, the short training sequence domain, long training sequence domain are sent to the sending device by communication interface 903.

The processor 901 is also used to, if receiving the data being carried on the M resource unit, the response message is carried in the corresponding M*N resource particle of the M resource units to sending device transmission by the communication interface 903.

If the receiving device is the first receiving device, the resource unit is for carrying the sending device to first receiving device, the processor is used for 901, and representing first receiving device, whether the First ray of successful data reception is carried in the corresponding N number of resource particle of the resource unit to sending device transmission；Wherein, the corresponding N number of resource particle of the resource unit be also used to carry represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence.

Embodiment 10:

The embodiment of the present invention provides a kind of communication system, which includes: sending device And receiving device.

The sending device is the sending device that above-described embodiment 6 provides；The receiving device is the receiving device that above-described embodiment 7 provides.

Wherein, if the sending device is access point AP, the receiving device is site STA；If the sending device is the STA, the receiving device is the AP；The communication system includes an AP and at least one described STA.Specifically, in uplink, multiple STA can send data to AP simultaneously.Bandwidth is divided on frequency domain can be divided into multiple resource units, and a STA can send data to AP by one or more of resource units.Other STA can also send data to AP by one or more resource units.Likewise, AP can send data to a STA by one or more resource units in downlink transfer.AP can also send data to other STA by one or more resource units.

The communication system of data receiver situation provided by the invention, sending device send Deta bearer on resource unit to receiving device, and response message is carried in the corresponding resource particle of the resource unit to the sending device transmits again by receiving device.It in this way can be in same time, the data receiver situation of the multiple receiving devices of same channel feedback, in comparison, the prior art utilizes the data receiver situation of ACK or NACK feedback reception equipment, but the transmission of ACK or NACK occupies whole bandwidth, i.e. in same time, same channel, there can only be a data receiver to data transmitting equipment feeding back ACK, be unable to satisfy the demand of the Wi-Fi system after introducing OFDMA.The system that the embodiment of the present invention provides can satisfy the demand of the Wi-Fi system after introducing OFDMA.

Embodiment 10:

The sending device is the sending device that above-described embodiment 8 provides；The receiving device is the receiving device that above-described embodiment 9 provides.

The communication system of data receiver situation provided by the invention, sending device send Deta bearer on resource unit to receiving device, and response message is carried in the corresponding resource particle of the resource unit to the sending device transmits again by receiving device.Since bandwidth can be divided into multiple resource units on frequency domain, multiple response messages can be fed back simultaneously.It in this way can be in same time, the data receiver situation of the multiple receiving devices of same channel feedback, in comparison, the prior art utilizes the data receiver situation of ACK or NACK feedback reception equipment, but the transmission of ACK or NACK occupies whole bandwidth, i.e. in same time, same channel, there can only be a data receiver to data transmitting equipment feeding back ACK, be unable to satisfy the demand of the Wi-Fi system after introducing OFDMA.The system that the embodiment of the present invention provides can satisfy the demand of the Wi-Fi system after introducing OFDMA.

The above description is merely a specific embodiment, but protection scope of the present invention It is not limited thereto, anyone skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should be covered by the protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

A kind of feedback method, which is characterized in that the described method includes:

Sending device sends the Deta bearer of one or more receiving device on resource unit to one or more of receiving devices；

The sending device receives the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.
The method according to claim 1, wherein if the response message represents the success of the data receiver on the resource unit, the method also includes:

The sending device does not receive the response message within a preset time, then will send on resource unit described in the Deta bearer of one or more of receiving devices to one or more of receiving devices.
According to the method for claim 1, it is characterized in that, the response message is that one or more of receiving devices obtain the data receiver success flag repeated encoding or one or more of receiving devices obtain data reception failure duplicate identity coding.
Method according to claim 1-3, which is characterized in that before the sending device receives the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the method also includes:

The sending device receives the short training sequence domain that one or more of receiving devices are sent；

Or, the sending device receives the short training sequence domain and long training sequence domain that one or more of receiving devices are sent.
Method according to claim 1-4, which is characterized in that the method also includes:

If the sending device sends the Deta bearer on M resource units to one or more of receiving devices, the sending device receives the response message that receiving devices be carried in the corresponding M*N resource particle of the M resource units, one or more of transmit.
According to the method for claim 5, it is characterized in that, if only one cyclic redundancy check code CRC check of the M resource unit, is carried in the M*N resource particle and carry the data receiver in the data receiver success flag or the M*N resource particle and unsuccessfully identify.
The method according to claim 1, wherein

The sending device specifically includes the Deta bearer of one or more receiving device on resource unit to the transmission of one or more of receiving devices:

The sending device sends the Deta bearer of the first receiving device and the second receiving device on the resource unit to first receiving device and the second receiving device；

The sending device receives the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent and specifically includes:

The sending device, which receives, is carried on the first response message that in the corresponding N number of resource particle of the resource unit, described first receiving device is sent and the second response message that second receiving device is sent, wherein, first response message be represent first receiving device whether the First ray of successful data reception, second response message be represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence, alternatively,

The sending device, which receives, is carried on the first response message that in the corresponding X resource particle of the resource unit, described first receiving device is sent, and it receives and is carried on the second response message that in the corresponding N-X resource particle of the resource unit, described second receiving device is sent.
A kind of feedback method, which is characterized in that the described method includes:

Receiving device receives the data being carried on resource unit, and the data of one or more receiving device including the receiving device are carried on the resource unit；

Response message is carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by the receiving device；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.
According to the method described in claim 8, it is characterized in that, if the response message represent the data receiver on the resource unit success, the method also includes:

When the receiving device receives the data failure being carried on the resource unit, the receiving device does not then send the response message to the sending device.
According to the method described in claim 8, it is characterized in that, the receiving device by response message be carried in the corresponding N number of resource particle of the resource unit to the sending device send before, the method also includes:

First receiving device obtains the response message to data receiver success flag repeated encoding, or obtains the response message to data reception failure duplicate identity coding.
According to the described in any item methods of claim 8-10, which is characterized in that response message is carried in the corresponding N number of resource particle of the resource unit to before sending device transmission by the receiving device, the method also includes:

Short training sequence domain is sent to the sending device；

Or the short training sequence domain and long training sequence domain are sent to the sending device.
According to the described in any item methods of claim 8-11, which is characterized in that the method also includes:

If the receiving device receives the data being carried on the M resource units, the response message is carried in the corresponding M*N resource particle of the M resource units to sending device transmission by the receiving device.
According to the method for claim 12, it is characterized in that, if only one cyclic redundancy check code CRC check of the M resource unit, is carried in the M*N resource particle and carry the data receiver in the data receiver success flag or the M*N resource particle and unsuccessfully identify.
According to the method described in claim 8, the resource unit is used to carry the data that the sending device is sent to first receiving device and the second receiving device it is characterized in that, the receiving device is the first receiving device,

Response message is carried in the corresponding N number of resource particle of the resource unit to sending device transmission and specifically includes by the receiving device:

First receiving device will then represent first receiving device, and whether the First ray of successful data reception is carried in the corresponding N number of resource particle of the resource unit to sending device transmission；Wherein, the corresponding N number of resource particle of the resource unit is also used to carry generation Second receiving device described in table whether the second sequence of successful data reception；The First ray is orthogonal with second sequence；Alternatively,

The response message is then carried in the corresponding X resource particle of the resource unit to the sending device and sends by first receiving device；Wherein, the corresponding N-X resource particle of the resource unit is used to carry the response message of second receiving device.
A kind of sending device characterized by comprising

Transmission unit, for sending the Deta bearer of one or more receiving device to one or more of receiving devices on resource unit；

Receiving unit, the response message sent for receiving the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.
Sending device according to claim 15 characterized by comprising

The transmission unit is also used to, if the response message represents the success of the data receiver on the resource unit, and the receiving unit does not receive the response message within a preset time, then will send on resource unit described in the Deta bearer of one or more of receiving devices to one or more of receiving devices.
Sending device according to claim 15, it is characterized in that, the response message is that one or more of receiving devices obtain data receiver success flag repeated encoding or one or more of receiving devices obtain data reception failure duplicate identity coding.
The described in any item sending devices of 5-17 according to claim 1, it is characterized in that, the receiving unit is also used to, before receiving the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the short training sequence domain that one or more of receiving devices are sent is received；

Or, before receiving the response message that the one or more of receiving devices being carried in the corresponding N number of resource particle of the resource unit are sent, the sending device receives the short training sequence domain and long training sequence domain that one or more of receiving devices are sent.
The described in any item sending devices of 5-18 according to claim 1, which is characterized in that if the transmission unit by the Deta bearer on M resource units to one Or multiple receiving devices are sent, the receiving unit is also used to, and receives the response message that receiving devices be carried in the corresponding M*N resource particle of the M resource units, one or more of transmit.
Sending device according to claim 19, it is characterized in that, if only one cyclic redundancy check code CRC check of the M resource unit, it is then carried in the M*N resource particle and carries the data receiver in the data receiver success flag or the M*N resource particle and unsuccessfully identify.
Sending device according to claim 15, which is characterized in that the transmission unit will be specifically used for, and the Deta bearer of the first receiving device and the second receiving device is sent on the resource unit to first receiving device and second receiving device；

The receiving unit is also used to, it receives and is carried on the first response message that in the corresponding N number of resource particle of the resource unit, described first receiving device is sent, receive and be carried on the second response message that in the corresponding N number of resource particle of the resource unit, described second receiving device is sent；Wherein, first response message be represent first receiving device whether the First ray of successful data reception, second response message be represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence, alternatively,

The receiving unit is also used to, it receives and is carried on the response message that in the corresponding X resource particle of the resource unit, described first receiving device is sent, receive and be carried on the response message that in the corresponding N-X resource particle of the resource unit, described second receiving device is sent.
A kind of receiving device characterized by comprising

Receiving unit carries the data of one or more receiving device including the receiving device for receiving the data being carried on resource unit on the resource unit；

Response message is carried in the corresponding N number of resource particle of the resource unit to the sending device and sends by transmission unit；The response message represents the data receiver failure on the success of the data receiver on the resource unit or the resource unit.
Receiving device according to claim 22, which is characterized in that it further include coding unit,

The coding unit is used for, before response message is carried in the corresponding N number of resource particle of the resource unit and sends to the sending device by the transmission unit, the response message is obtained to data receiver success flag repeated encoding, or the response message is obtained to data reception failure duplicate identity coding.
The receiving device according to claim 22 or 23, it is characterized in that, the transmission unit is also used to, and before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device, Xiang Suoshu sending device sends short training sequence domain；

Or, Xiang Suoshu sending device sends the short training sequence domain and long training sequence domain before sending on response message to be carried on to the corresponding N number of resource particle of the resource unit to the sending device.
According to the described in any item receiving devices of claim 22-24, it is characterized in that, the transmission unit is also used to, if the receiving unit receives the data being carried on the M resource units, the response message is carried in the corresponding M*N resource particle of the M resource units to sending device transmission.
Receiving device according to claim 25, it is characterized in that, if only one cyclic redundancy check code CRC check of the M resource unit, it is then carried in the M*N resource particle and carries the data receiver in the data receiver success flag or the M*N resource particle and unsuccessfully identify.
Receiving device according to claim 22, which is characterized in that the receiving device is the first receiving device, the resource unit for carrying the sending device to first receiving device,

The transmission unit is also used to, and representing first receiving device, whether the First ray of successful data reception is carried in the corresponding N number of resource particle of the resource unit to sending device transmission；Wherein, the corresponding N number of resource particle of the resource unit be also used to carry represent second receiving device whether the second sequence of successful data reception；The First ray is orthogonal with second sequence；Alternatively,

The response message is carried in the corresponding X resource particle of the resource unit to the sending device and is sent；Wherein, the corresponding N-X resource particle of the resource unit is used In the response message for carrying second receiving device.
A kind of communication system characterized by comprising sending device and receiving device,

The sending device is the described in any item sending devices of claim 15~21；

The receiving device is the described in any item receiving devices of claim 22~27；

Wherein, if the sending device is access point AP, the receiving device is site STA；If the sending device is the STA, the receiving device is the AP；The communication system includes an AP and at least one described STA.