WO2016138824A1

WO2016138824A1 - Data transmission method and receiving method, and transmission device and receiving device

Info

Publication number: WO2016138824A1
Application number: PCT/CN2016/074201
Authority: WO
Inventors: 邢卫民; 田开波; 吕开颖; 姚珂
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-03-05
Filing date: 2016-02-22
Publication date: 2016-09-09
Also published as: CN105991242A

Abstract

Provided are a data transmission method and receiving method, and transmission device and receiving device. The transmission method comprises: obtaining a first number of parallel channel resources configured to transmit data to a single target receiving station; processing the data as a second number of physical layer service data units, wherein the second number is two or more; and transmitting, on the first number of the parallel channel resources, a radio frame comprising the second number of the physical layer service data units. The present invention addresses a problem existing in the related art of a low data transmission efficiency with respect to a single user, thereby increasing the data transmission efficiency with respect to a single user.

Description

Data transmitting method, receiving method, transmitting device and receiving device

Technical field

The present invention relates to the field of communications, and in particular to a data transmitting method, a receiving method, a transmitting device, and a receiving device.

Background technique

At present, in the field of wireless networks, various network technologies are developing rapidly. Taking Wireless Local Area Network (WLAN) as an example, 802.11n introduces Multiple Input Multiple Output (MIMO) and beamforming technology. Supporting data rates up to 600 Mbps, the 802.11ac task group further proposes the concept of Very High Throughput (VHT), which introduces larger channel bandwidth, higher order MIMO, and other data rates. More than 1Gbps. However, as the network density increases and the number of users increases, the efficiency of the WLAN network will decrease significantly. The problem of network efficiency cannot be solved simply by increasing the transmission rate. Therefore, the Institute for Electrical and Electronic Engineers (IEEE) standards organization established the TGax task force to address WLAN network efficiency issues.

In the WLAN, an access point (AP) and a plurality of non-AP stations (non-AP STAs) associated with the AP form a basic service set ( Basic service set (abbreviated as BSS), as shown in FIG. 1, FIG. 1 is a BSS structure diagram in the related art. The multi-user parallel transmission mode is defined in the related art, so that multiple non-AP STAs and APs perform parallel communication, including the AP transmitting downlink data to multiple STAs, and multiple STAs simultaneously transmitting to the AP, and the parallel transmission technologies include OFDMA and MU- MIMO. However, for single-user transmission, that is, communication optimization between a single non-AP STA and an AP is insufficient, data for a single user in a single-user transmission is encapsulated in one physical layer service data unit, and has the following problems:

1. From the physical layer, a physical layer service data unit is transmitted on all channel resources, and transmission parameters such as Modulation and Coding Scheme (MCS) are determined according to the worst channel resources, and the channel is determined. Poor utilization.

2. From the Media Access Control (MAC) layer, a physical layer service data unit can only accommodate one service flow data, and multiple service flows need to compete multiple times to send their own data. The overhead is large, especially for small packets.

In summary, there is no further improvement in the transmission of single users in the related art. With the application of the large bandwidth multi-antenna technology, the inefficiency of single-user transmission can degrade the performance of the entire network.

In view of the problem of low efficiency of data transmission with a single user existing in the related art, an effective solution has not been proposed yet.

Summary of the invention

The present invention provides a data transmitting method, a receiving method, a transmitting device, and a receiving device to solve at least the problem of low data transmission efficiency with a single user existing in the related art.

According to an aspect of the present invention, a data transmission method is provided, comprising: acquiring a first number of parallel channel resources, wherein the parallel channel resources are used to transmit data to a single destination receiving station; processing the data as a a second number of physical layer service data units, wherein said second number is at least two; transmitting said second number of said physical layer service data units on said first number of said parallel channel resources Wireless frame.

Optionally, each of the first number of the parallel channel resources respectively corresponds to a set of transmission parameters; and/or each of the second number of the physical layer service data units The physical layer service data units respectively correspond to a set of transmission parameters; wherein the transmission parameters include transmission power and/or modulation coding mode.

Optionally, the signaling domain in the physical layer header of the radio frame indicates at least one of the following: a sending parameter corresponding to each of the parallel resources of the first number of the parallel channel resources; Transmitting a transmission parameter corresponding to each physical layer service data unit of the second number of the physical layer service data units; the first quantity of the parallel channel resource and the second quantity of the physical layer service data The correspondence of the units; the identity of the single destination receiving station.

Optionally, the second quantity of the physical layer service data unit comprises at least one of: at least two service flows or at least two access classes to be sent to the single destination receiving station At least two of the data blocks are aggregated into at least two physical layer service data units, wherein each physical layer service data unit includes the same traffic flow or multiple data blocks in the same access class; to be sent to the single destination reception One of the data blocks of the station is segmented into one or more physical layer service data units; one of the data streams or one of the access classes to be sent to the single destination receiving station A block of data is aggregated into one or more physical layer service data units.

Optionally, before transmitting, by the first number of the parallel channel resources, the radio frame that includes the second quantity of the physical layer service data unit, further comprising: sending to the single destination receiving station And signaling a signaling frame of the correspondence between the first number of the parallel channel resources and the second number of the physical layer service data units.

Optionally, the second quantity of the physical layer service data unit includes at least a primary service flow or a primary service The data in the class.

Optionally, the parallel channel resource includes at least one of: a subchannel in an orthogonal frequency division multiple access OFDMA system, a subchannel in a frequency division multiple access FDMA system, a spatial stream in a multiple input multiple output MIMO transmission, Space-time flow in multiple-input multiple-output MIMO transmission.

According to another aspect of the present invention, a data receiving method is provided, comprising: determining a first number of parallel channel resources, wherein the parallel channel resources are used to receive a second number of physical layer services transmitted by a transmitting station a radio frame of the data unit, the second number being at least two, the second quantity of the physical layer service data unit being obtained by processing data that needs to be sent by the sending station; The radio frame is received on a first number of the parallel channel resources.

Optionally, determining the first quantity of the parallel channel resources comprises: determining, according to a correspondence relationship between the first quantity of the parallel channel resources and the second quantity of the physical layer service data units a first number of the parallel channel resources, wherein the correspondence is obtained by at least one of: obtaining the indication in a signaling domain in a physical layer header of the radio frame by acquiring on a primary channel resource Corresponding relationship manner; pre-sent by the transmitting station acquired on the primary channel resource to notify the correspondence between the first quantity of the parallel channel resource and the second quantity of the physical layer service data unit The way the signaling frame of the relationship.

Optionally, after receiving the radio frame on the determined first quantity of the parallel channel resources, the method further includes: acquiring the data included in the radio frame; and sending the identifier to the sending station A response frame of the result of the acquisition of the data.

Optionally, sending, to the sending station, a response frame for identifying an acquisition result of the data, includes: transmitting, to the sending station, the second quantity of the physical layer service data unit in parallel by using at least one of: Multiple response frames: orthogonal frequency division multiple access OFDMA, frequency division multiple access FDMA, multiple input multiple output MIMO.

Optionally, the signaling domain in the physical layer header of the radio frame indicates at least one of the following: a sending parameter corresponding to each of the parallel resources of the first number of the parallel channel resources; Transmitting a transmission parameter corresponding to each physical layer service data unit of the second number of the physical layer service data units; the first quantity of the parallel channel resource and the second quantity of the physical layer service data Correspondence of units; an identity of a single destination receiving station for receiving the radio frame.

Optionally, the second quantity of the physical layer service data unit includes at least one of: aggregating at least two service flows or at least two data blocks of the at least two access classes into At least two physical layers a service data unit, wherein each physical layer service data unit comprises the same service flow or a plurality of data blocks in the same access class; segmenting one of the data segments into one or more physical layer service data units; A traffic flow in the data or a plurality of data blocks in an access class is aggregated into one or more physical layer service data units.

Optionally, the second quantity of the physical layer service data unit includes at least data in a primary service flow or a primary service class.

According to another aspect of the present invention, there is provided a data transmitting apparatus comprising: a first obtaining module configured to acquire a first number of parallel channel resources, wherein the parallel channel resources are used to transmit data to a single destination receiving station a processing module configured to process the data into a second number of physical layer service data units, wherein the second number is at least two; a first sending module configured to be in the first number of the A radio frame including the second number of the physical layer service data units is transmitted on the parallel channel resource.

Optionally, the apparatus further includes: a second sending module, configured to send, to the single destination receiving station, the first number of the parallel channel resources and the second number of the physical layer A signaling frame for the correspondence of service data units.

According to another aspect of the present invention, a data receiving apparatus is provided, comprising: a determining module configured to determine a first number of parallel channel resources, wherein the parallel channel resource is configured to receive a second a quantity of the physical layer service data unit radio frame, the second number is at least two, the second quantity of the physical layer service data unit is obtained after processing the data that the sending station needs to send; And a receiving module, configured to receive the radio frame on the determined first number of the parallel channel resources.

Optionally, the determining module includes: a determining unit, configured to determine the first quantity according to the correspondence between the first quantity of the parallel channel resource and the second quantity of the physical layer service data unit The parallel channel resource, wherein the correspondence is obtained by at least one of: the correspondence indicated by a signaling domain in a physical layer header of the radio frame acquired on a primary channel resource Means for notifying the correspondence between the first number of the parallel channel resources and the second number of the physical layer service data units, which are pre-transmitted by the transmitting station acquired on a primary channel resource The way the signaling frame is.

Optionally, the device further includes: a second obtaining module, configured to acquire the data included in the radio frame; and a third sending module, configured to send, to the sending station, an identifier for identifying the data The resulting response frame.

By the present invention, acquiring a first number of parallel channel resources, wherein the parallel channel resources are used Transmitting data to a single destination receiving station; processing the data as a second number of physical layer service data units, wherein the second number is at least two; transmitting on the first number of the parallel channel resources The radio frame including the second quantity of the physical layer service data unit solves the problem that the data transmission efficiency with a single user exists in the related art is low, thereby achieving the effect of improving data transmission efficiency with a single user. .

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a structural diagram of a BSS in the related art;

2 is a flowchart of a data transmitting method according to an embodiment of the present invention;

FIG. 3 is a flowchart of a data receiving method according to an embodiment of the present invention; FIG.

4 is a block diagram showing the structure of a data transmitting apparatus according to an embodiment of the present invention;

FIG. 5 is a block diagram showing a preferred structure of a data transmitting apparatus according to an embodiment of the present invention; FIG.

6 is a block diagram showing the structure of a data receiving apparatus according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of a determining module 62 in a data receiving apparatus according to an embodiment of the present invention;

FIG. 8 is a block diagram showing a preferred configuration of a data receiving apparatus according to an embodiment of the present invention; FIG.

9 is a schematic diagram of single-user multiple data unit transmission according to Embodiment 2 of the present invention;

FIG. 10 is a schematic diagram of single-user multiple data unit transmission according to Embodiment 3 of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In this embodiment, a data sending method is provided. FIG. 2 is a flowchart of a data sending method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202, acquiring a first quantity of parallel channel resources, where the parallel channel resources are used to send data to a single destination receiving station;

Step S204, processing the foregoing data into a second quantity of physical layer service data units, where the second number The amount is at least two;

Step S206, transmitting a radio frame including a second number of physical layer service data units on the first number of parallel channel resources.

The foregoing step S202 and step S204 have no sequence, and the first quantity of parallel channel resources may be acquired first, and then the data is processed into the second number of physical layer service data units, or the data may be processed into the second quantity first. The physical layer serves the data unit, and then acquires the first number of parallel channel resources. Of course, the two can also be performed simultaneously. Through the above steps, the data is divided into multiple physical layer service data units and transmitted in parallel, which can adapt to different channel resource quality, thereby improving channel utilization, and solving the problem of low data transmission efficiency with a single user in the related art. In turn, the effect of improving data transmission efficiency with a single user is achieved.

In an optional embodiment, each of the first number of parallel channel resources corresponds to a set of transmission parameters; and/or each of the second number of physical layer service data units The physical layer service data units respectively correspond to a set of transmission parameters; wherein the transmission parameters include transmission power and/or modulation coding mode.

The signaling domain in the physical layer header of the radio frame may indicate multiple information. In an optional embodiment, the signaling domain in the physical layer header of the radio frame may indicate at least one of the following information. a transmission parameter corresponding to each of the first number of parallel channel resources; a transmission parameter corresponding to each physical layer service data unit of the second number of physical layer service data units; a first number of parallel channel resources Correspondence with a second number of physical layer service data units; identification of a single destination receiving station.

In an optional embodiment, the second quantity of physical layer service data units includes at least one of: at least two of the data to be sent to the single destination receiving station or at least two of the access classes At least two data blocks are aggregated into at least two physical layer service data units, wherein each physical layer service data unit includes the same service flow or multiple data blocks in the same access class; data to be sent to a single destination receiving station One data block is segmented into one or more physical layer service data units; one of the data streams sent to a single destination receiving station or one of the access classes is aggregated into one or more physical layers Service data unit.

In an optional embodiment, before transmitting the radio frame including the second number of physical layer service data units on the first number of parallel channel resources, the method further includes: sending, to the single destination receiving station, the first quantity A signaling frame of a correspondence between a parallel channel resource and a second number of physical layer service data units. In order to reduce signaling overhead, when the signaling domain in the physical layer header of the radio frame does not include the first number of parallel channel resources and the second number of physical layer service data unit correspondence information, And then send the signaling frame. When the signaling domain in the physical layer header of the radio frame does not include the first number of parallel channel resources and the second number of physical layer service data unit correspondence information, the signaling frame may also be sent to implement The secondary verification of the correspondence relationship improves the accuracy of data reception.

The second number of physical layer service data units includes at least data in the main service flow or the main service class.

The parallel channel resource may include at least one of the following: a subchannel in an orthogonal frequency division multiple access OFDMA system, a subchannel in a frequency division multiple access FDMA system, a spatial stream in a multiple input multiple output MIMO transmission, and multiple input multiple output. Space-time flow in MIMO transmission.

FIG. 3 is a flowchart of a data receiving method according to an embodiment of the present invention. As shown in FIG. 3, the data receiving method includes the following steps:

Step S302, determining a first quantity of parallel channel resources, where the parallel channel resource is used to receive a radio frame that is sent by the sending station and includes a second quantity of physical layer service data units, where the second quantity is at least two, The second number of physical layer service data units are obtained by processing data that the sending station needs to send;

Step S304, receiving the radio frame on the determined first number of parallel channel resources.

Through the above steps, the plurality of physical layer service data units sent by the transmitting station in parallel are received to obtain data that the sending station needs to send, so that the data transmission can adapt to different channel resource quality, thereby improving channel utilization, and solving related technologies. The problem of low data transmission efficiency with a single user exists, thereby achieving the effect of improving data transmission efficiency with a single user.

When determining the first number of parallel channel resources, there may be multiple determination manners, and the determination of the first number of parallel channel resources is determined by a physical layer header signalling domain or a signaling frame of the radio frame transmitted by the sender. The receiving party for receiving the radio frame may always perform radio frame detection on the primary channel resource, and the sending of the signaling frame or the physical layer header signaling domain by the sender is included in the transmission on the primary channel. After the receiver detects the above indication in the signaling domain or the signaling frame on the primary channel, the parallel channel resources occupied by the data radio frame can be determined. Therefore, in an optional embodiment, when determining the first quantity of parallel channel resources, the method may be: determining, according to the correspondence between the first number of parallel channel resources and the second number of physical layer service data units a quantity of parallel channel resources, wherein the correspondence is obtained by at least one of: a manner of indicating a correspondence relationship in a signaling domain in a physical layer header of a radio frame acquired on a primary channel resource; A manner in which a transmitting station previously acquired on the primary channel resource transmits a signaling frame for notifying a correspondence between a first number of parallel channel resources and a second number of physical layer service data units.

In an optional embodiment, after receiving the radio frame on the determined first quantity of parallel channel resources, the method further includes: acquiring the foregoing data included in the radio frame; and sending, to the sending station, the identifier for identifying the data. The resulting response frame.

The sending a response frame for identifying the result of the data to the transmitting station includes: transmitting, to the sending station, multiple response frames for the second number of physical layer service data units in parallel by using at least one of: orthogonal frequency division Address OFDMA, Frequency Division Multiple Access FDMA, Multiple Input Multiple Output MIMO.

The signaling domain in the physical layer header of the radio frame may indicate at least one of the following: a transmission parameter corresponding to each of the first number of parallel channel resources; and a second number of physical layer service data units a transmission parameter corresponding to each physical layer service data unit; a correspondence between a first number of parallel channel resources and a second number of physical layer service data units; an identifier of a single destination receiving station for receiving the radio frame.

The foregoing second number of physical layer service data units includes at least one of: aggregating at least two service flows or at least two data blocks of the at least two access classes into at least two physical layer service data units, Each physical layer service data unit includes the same service flow or multiple data blocks in the same access class; segmenting one data block into one or more physical layer service data units; and one service in the data A stream or multiple blocks of data in an access class are aggregated into one or more physical layer service data units.

In an optional embodiment, the parallel channel resource includes at least one of: a subchannel in an orthogonal frequency division multiple access OFDMA system, a subchannel in a frequency division multiple access FDMA system, and a multiple input multiple output MIMO transmission. Space flow, space-time flow in multiple-input multiple-output MIMO transmission.

In the embodiment, a data transmitting device and a data receiving device are provided, which are used to implement the foregoing embodiments and preferred embodiments, and are not described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

4 is a structural block diagram of a data transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes a first obtaining module 42, a processing module 44, and a first sending module 46, wherein the first obtaining module 42 and processing The module 44 may have multiple corresponding relationships. The operations in the first obtaining module 42 may be performed first, and then the operations in the processing module 44 may be performed. The operations in the processing module 44 may be performed first, and then executed in the first obtaining module 42. The operation is performed to acquire the operations in the two modules at the same time. The device is described below by performing the operations in the first obtaining module 42 and then performing the operations in the processing module 44 as an example.

The first obtaining module 42 is configured to acquire a first quantity of parallel channel resources, wherein the parallel channel resources are used to send data to a single destination receiving station; and the processing module 44 is connected to the first acquiring module 42 to set the data. Processing as a second number of physical layer service data units, wherein the second number is at least two; a first sending module 46, coupled to the processing module 44, configured to transmit on the first number of parallel channel resources There is a second number of radio frames for the physical layer service data unit.

FIG. 5 is a block diagram showing a preferred structure of a data transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes a second transmitting module 52 in addition to all the modules shown in FIG. Description.

The second sending module 52 is connected to the first sending module 46, and is configured to send, to a single destination receiving station, a signaling frame for notifying a correspondence between the first number of parallel channel resources and the second number of physical layer service data units. .

6 is a block diagram showing the structure of a data receiving apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes a determining module 62 and a receiving module 64, which will be described below.

The determining module 62 is configured to determine a first quantity of parallel channel resources, where the parallel channel resource is configured to receive a radio frame that is sent by the sending station and includes a second quantity of physical layer service data units, where the second quantity is at least two The second number of physical layer service data units are obtained by processing the data that the sending station needs to send; the receiving module 64 is connected to the determining module 62, and is configured to be on the determined first number of parallel channel resources. Receiving the above radio frame.

When determining the first number of parallel channel resources, there may be multiple determination manners, and the determination of the first number of parallel channel resources is determined by a physical layer header signalling domain or a signaling frame of the radio frame transmitted by the sender. The receiving party for receiving the radio frame may always perform radio frame detection on the primary channel resource, and the sending of the signaling frame or the physical layer header signaling domain by the sender is included in the transmission on the primary channel. After the receiver detects the above indication in the signaling domain or the signaling frame on the primary channel, the parallel channel resources occupied by the data radio frame can be determined. FIG. 7 is a block diagram showing the structure of the determining module 62 in the data receiving apparatus according to the embodiment of the present invention. As shown in FIG. 7, the determining module 62 includes a determining unit 72, which will be described below.

The determining unit 72 is configured to determine, according to the correspondence between the first number of parallel channel resources and the second number of physical layer service data units, the first number of parallel channel resources, wherein the correspondence is obtained by at least one of: passing a manner of indicating a correspondence relationship in a signaling domain in a physical layer header of a radio frame acquired on a primary channel resource; a pre-sent by the transmitting station acquired on the primary channel resource for notifying a first number of parallel channel resources The manner of signaling frames corresponding to the correspondence of the second number of physical layer service data units.

FIG. 8 is a block diagram showing a preferred structure of a data receiving apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes a second obtaining module 82 and a third sending module 84, in addition to all the modules shown in FIG. The device will be described below.

The second obtaining module 82 is configured to acquire data included in the radio frame. The third sending module 84 is connected to the second acquiring module 82, and is configured to send a response frame for identifying an acquisition result of the data to the sending station.

The following describes the invention by taking a single user data from a WLAN station as an example:

Example 1

In a BSS network, the network can use a basic bandwidth of 80 MHz, including three 20 MHz sub-channels and one main 20 MHz sub-channel, and at least the main 20 MHz channel is used for each transmission.

Site A contends to the channel to send data to the AP. The primary 20 MHz channel is available but the channel quality is poor or there are transmission interferences of other networks. The three times 20 MHz channel quality is better. Site A determines the parallel transmission method using single-user multiple data units, including:

Site A contends to the 80 MHz channel (four 20 MHz channels). According to the quality of each subchannel, the data block to be sent to the AP is segmented into two physical layer service data units, where the physical layer service data unit 1 is on the main 20 MHz. The transmission, the transmission power and the transmission MCS are determined according to the quality of the primary channel; the physical layer service data unit 2 is transmitted on three times 20 MHz, and the transmission power and the transmission MCS are determined according to the quality of the secondary channel. For example, a lower rate MCS can be used on the primary channel to ensure transmission reliability, and a higher rate MCS can be used on the secondary channel to ensure bandwidth usage efficiency.

According to the above rule, station A transmits two physical layer service data units in parallel according to OFDMA/FDMA on four 20 MHz, and encapsulates two physical layer service data units into one radio frame, wherein the physical layer frame of the radio frame The corresponding relationship between the two physical layer service data units and each subchannel is indicated in the header, including that the destination receiver of the radio frame may be the AP in the signaling domain A in the radio frame physical layer header, in the physical layer frame. The signaling domain B in the header indicates that the physical layer service data unit 1 corresponds to the primary 20 MHz channel, and the physical layer service data unit 2 corresponds to the remaining 60 MHz channel.

Receiving, by the AP, the radio frame sent by the site A, parsing the two physical layer service data units in the radio frame according to the structure indicated by the physical layer frame header signaling domain, and replying the response frame (same as the above response frame), the response frame Contains specific instructions for whether the data segments contained in the 2 physical layer service data units are correct.

Example 2

The WLAN station competes for media resources, where STA-1 has multiple service flows to be sent, where each service flow/access class is independent of the competition channel, assuming that the service flow/access class A competes for resources (assuming traffic flow/access class A) The identifier is TID1, and the identifiers of other service flows/access classes are TID2, TID3, etc., and when STA-1 transmits the data of TID1, the parallel transmission technology OFDMA/MU-MIMO is used to transmit other service flows/access classes. The data is as shown in FIG. 9. FIG. 9 is a schematic diagram of single-user multiple data unit transmission according to Embodiment 2 of the present invention, wherein:

1. STA-1 acquires M (the same number as the above-mentioned first) parallel channel resources, wherein the parallel channel resources refer to subchannels in OFDMA, subchannels in FDMA, spatial streams in MIMO transmission, and MIMO transmission. At least one of the empty time streams.

2. The multiple data blocks of the TID1 are aggregated into an aggregated MAC protocol data unit (A-MPDU) and packaged into a physical layer service data unit, firstly the physical of the TID1. The layer service data unit selects a transmission resource.

3. The data blocks of the other service flows/access classes TID2 to TID4 are respectively aggregated into A-MPDUs, wherein each A-MPDU can only aggregate data blocks of one service flow. Selecting transmission resources for other service flows/access classes on channel resources not occupied by TID1.

4. The wireless frame is sent in parallel, and the header portion of the transmitted wireless frame indicates:

The receiver of the radio frame is a single user;

The radio frame carries a plurality of physical layer service data units, and indicates a mapping relationship between each physical layer service data unit and parallel channel resources when the resources are received.

5. The AP receives the radio frame of STA-1, and performs parallel reception of multiple physical layer service data units according to the indicated format.

6. The AP replies to the data frame of the STA-1, where the AP can reply to the M-ACK (Multi-ACK) frame when multiple physical layer service data units sent by the STA-1 request an Acknowledgement (ACK). For STA-1, when the radio frame sent by STA-1 requires Block Acknowledgement (BA), the AP can reply to the M-BA (Multi-BA) frame to STA-1.

Example 3

The WLAN station competes for media resources, where STA-1 has multiple service flows to be sent, where the service flow/access class A competes for resources (assuming that the service flow/access class A identity is TID1, and other service flows/access classes) The identifiers are TID2, TID3, etc., and when STA-1 transmits the data of TID1, the parallel transmission technology OFDMA/MU-MIMO is used to transmit data of other service flows/access classes, as shown in FIG. 10, FIG. 10 is A schematic diagram of single-user multiple data unit transmission according to Embodiment 3 of the present invention includes:

1. STA-1 acquires M parallel channel resources, where parallel channel resources refer to at least one of a subchannel in OFDMA, a subchannel in FDMA, a spatial stream in MIMO transmission, and a space-time stream in MIMO transmission.

2. The plurality of data blocks of the TID1 are aggregated into one A-MPDU and packaged into one physical layer service data unit. First, the transmission resource is selected for the physical layer service data unit of the TID1.

3. Aggregate the data blocks of other service flows/access classes TID2 to TID4 into A-MPDUs, each of which A-MPDUs can only aggregate data blocks of one service flow. Selecting transmission resources for other service flows/access classes on channel resources not occupied by TID1.

The receiver of the radio frame is a single user;

6. The AP replies to the STA-1 data frame, wherein the AP uses M parallel resources to reply multiple ACK/BA frames to STA-1, and the parallel mode may send multiple ACK/BAs in parallel on multiple subchannels of OFDMA/FDMA. Where ACK/BA is consistent with the channel occupied by the physical layer service data unit to be acknowledged.

Example 4

The WLAN station competes for media resources, where the AP has multiple service flows to be sent to STA-1, and the AP acquires M parallel channel resources, where the parallel channel resources refer to spatial flows in subchannels and/or MIMO transmissions in OFDMA/FDMA. Or empty time flow.

The AP aggregates the data blocks of different service flows/access classes sent to STA-1 into multiple A-MPDUs and packs them into multiple physical layer service data units. Before paralleling multiple physical layer service data units, the AP sends special Signaling frame, indicated in the signaling frame:

The AP will next send a radio frame containing multiple physical layer service data units to STA-1;

And mapping relationship between each physical layer service data unit and parallel channel resources when receiving the resource in the radio frame including the plurality of physical layer service data units.

After receiving the signaling frame sent by the AP, the STA-1 receives the subsequent radio frame including multiple physical layer service data units and responds to the response frame according to the indication of the signaling frame.

Example 5

This embodiment describes the content of the radio frame of the multi-physical layer service data unit, and the selection of the transmission parameters:

In the multiple physical layer service data units in the radio frame, in order to further compress the frame header overhead, it may be used. a compressed MAC frame header format, wherein the plurality of physical layer service data units include a plurality of data units in an uncompressed MAC frame header format and a plurality of data units in a compressed MAC frame header format, wherein the data in the MAC frame header format is not compressed. The number of units is at least one.

The radio frame includes N (the second number of the foregoing) physical layer service data units transmitted on M parallel channel resources, then:

Method 1. The transmitting station selects M types of transmission parameters according to the quality of the M parallel channel resources, for example, specifies a transmission rate and other parameters for each channel resource, and indicates the M types in the physical layer header signal domain in the radio frame. Sending parameters;

Method 2: The transmitting station selects N types of transmission parameters according to channel resources occupied by the N physical layer service data units, for example, parameters such as a transmission rate of each physical layer service data unit, and a physical layer frame header in the radio frame. The N types of transmission parameters are indicated in the field.

The improved method for transmitting single-user data by using the WLAN station in the foregoing embodiment may be performed by dividing the data into multiple physical layer service data units according to physical layer resources, so as to adapt to different channel resource quality, improve channel utilization efficiency, and The data of multiple service flows/access classes are sent in parallel, which realizes resource sharing between different services of single users, so that the competing resources can be fully utilized, and the overhead of the site competition channel is reduced.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the data transmitting method, the receiving method, the transmitting device, and the receiving device provided by the embodiments of the present invention have the following beneficial effects: the problem of low data transmission efficiency with a single user existing in the related art is solved, and the problem is achieved. Improve the efficiency of data transfer with a single user.

Claims

A data transmission method includes:

Acquiring a first number of parallel channel resources, wherein the parallel channel resources are used to send data to a single destination receiving station;

Processing the data into a second number of physical layer service data units, wherein the second quantity is at least two;

Transmitting a radio frame including the second number of the physical layer service data units on the first number of the parallel channel resources.
The method of claim 1 wherein

Each of the first number of the parallel channel resources corresponds to a set of transmission parameters; and/or,

Each of the second number of the physical layer service data units corresponds to a set of transmission parameters;

The transmission parameter includes a transmission power and/or a modulation and coding manner.
The method of claim 2, wherein the signaling domain in the physical layer header of the radio frame indicates at least one of the following:

a transmission parameter corresponding to each of the first number of the parallel channel resources;

Transmitting parameters corresponding to each physical layer service data unit of the second number of the physical layer service data units;

Corresponding relationship between the first number of the parallel channel resources and the second number of the physical layer service data units;

The identity of the single destination receiving station.
The method of claim 1 wherein said second number of said physical layer service data units comprises at least one of:

Converging at least two of the data sent to the single destination receiving station or at least two of the at least two access classes into at least two physical layer service data units, wherein each physical layer The service data unit contains the same service flow or multiple data blocks in the same access class;

Segmenting one of the data sent to the single destination receiving station into one or more physical layer service data units;

One of the data streams sent to the single destination receiving station or a plurality of data blocks in an access class are aggregated into one or more physical layer service data units.
The method of claim 1, wherein before transmitting the radio frame including the second number of the physical layer service data units on the first number of the parallel channel resources, the method further comprises:

Transmitting, to the single destination receiving station, a signaling frame for notifying a correspondence between the first number of the parallel channel resources and the second number of the physical layer service data units.
The method of claim 1 wherein said second number of said physical layer service data units comprises at least data in a primary service flow or a primary service class.
The method of claim 1 wherein the parallel channel resources comprise at least one of:

Subchannels in Orthogonal Frequency Division Multiple Access OFDMA systems, subchannels in a frequency division multiple access FDMA system, spatial streams in MIMO transmission, and space-time streams in MIMO transmission.
A data receiving method includes:

Determining a first number of parallel channel resources, wherein the parallel channel resource is configured to receive a radio frame that is sent by the transmitting station and includes a second number of physical layer service data units, where the second number is at least two The second quantity of the physical layer service data unit is obtained by processing data that needs to be sent by the sending station;

Receiving the radio frame on the determined first number of the parallel channel resources.
The method of claim 8 wherein determining the first number of the parallel channel resources comprises:

Determining, according to the correspondence between the first quantity of the parallel channel resource and the second quantity of the physical layer service data unit, the first quantity of the parallel channel resource, where the correspondence is as follows Obtaining at least one of: a manner of the correspondence indicated by a signaling domain in a physical layer header of the radio frame acquired on a primary channel resource; by the transmitting station acquired on a primary channel resource And a manner of transmitting, in advance, a signaling frame for notifying the correspondence relationship between the first number of the parallel channel resources and the second number of the physical layer service data units.
The method of claim 8, wherein after receiving the radio frame on the determined first number of the parallel channel resources, the method further comprises:

Obtaining the data included in the radio frame;

A response frame for identifying an acquisition result of the data is transmitted to the transmitting station.
The method of claim 10 wherein the obtaining of the data is sent to the transmitting station The resulting response frame includes: transmitting, to the transmitting station, a plurality of response frames for the second number of the physical layer service data units in parallel using at least one of: orthogonal frequency division multiple access OFDMA, frequency division multiple access FDMA, multiple input multiple output MIMO.
The method of claim 8 wherein

Each of the first number of the parallel channel resources corresponds to a set of transmission parameters; and/or,

Each of the second number of the physical layer service data units corresponds to a set of transmission parameters;

The transmission parameter includes a transmission power and/or a modulation and coding manner.
The method of claim 12, wherein the signaling domain in the physical layer header of the radio frame indicates at least one of the following:

a transmission parameter corresponding to each of the first number of the parallel channel resources;

Transmitting parameters corresponding to each physical layer service data unit of the second number of the physical layer service data units;

Corresponding relationship between the first number of the parallel channel resources and the second number of the physical layer service data units;

An identification of a single destination receiving station for receiving the radio frame.
The method of claim 8 wherein said second number of said physical layer service data units comprises at least one of:

Aggregating at least two of the data or at least two of the at least two access classes into at least two physical layer service data units, wherein each physical layer service data unit comprises the same service flow or the same Accessing multiple data blocks in a class;

Segmenting one of the data blocks into one or more physical layer service data units;

A traffic flow in the data or a plurality of data blocks in an access class is aggregated into one or more physical layer service data units.
The method of claim 8 wherein said second number of said physical layer service data units comprises at least data in a primary service flow or a primary service class.
The method of claim 8 wherein said parallel channel resources comprise at least one of:

Subchannels in Orthogonal Frequency Division Multiple Access OFDMA systems, subchannels in a frequency division multiple access FDMA system, spatial streams in MIMO transmission, and space-time streams in MIMO transmission.
A data transmitting device includes:

a first acquiring module, configured to acquire a first quantity of parallel channel resources, where the parallel channel resources are used to send data to a single destination receiving station;

a processing module, configured to process the data into a second number of physical layer service data units, wherein the second quantity is at least two;

And a first sending module, configured to send, on the first quantity of the parallel channel resources, a radio frame that includes the second number of the physical layer service data units.
The device according to claim 17, further comprising:

a second sending module, configured to send, to the single destination receiving station, a signaling frame for notifying a correspondence between the first number of the parallel channel resources and the second number of the physical layer service data units .
A data receiving device includes:

a determining module, configured to determine a first number of parallel channel resources, wherein the parallel channel resource is configured to receive a radio frame that is sent by the transmitting station and includes a second number of physical layer service data units, where the second quantity is at least Two, the second quantity of the physical layer service data unit is obtained by processing data that needs to be sent by the sending station;

And a receiving module, configured to receive the radio frame on the determined first number of the parallel channel resources.
The apparatus of claim 19, wherein the determining module comprises:

a determining unit, configured to determine the first number of the parallel channel resources according to a correspondence between the first number of the parallel channel resources and the second number of the physical layer service data units, where The correspondence is obtained by at least one of: obtaining the corresponding relationship indicated by a signaling domain in a physical layer header of the radio frame on a primary channel resource; by acquiring on a primary channel resource And a manner in which the transmitting station sends in advance a signaling frame for notifying the correspondence between the first number of the parallel channel resources and the second number of the physical layer service data units.
The device according to claim 20, further comprising:

a second acquiring module, configured to acquire the data included in the radio frame;

And a third sending module, configured to send, to the sending station, a response frame for identifying an acquisition result of the data.