CN113099544A - Data transmission method, device, storage medium and wireless node - Google Patents
Data transmission method, device, storage medium and wireless node Download PDFInfo
- Publication number
- CN113099544A CN113099544A CN202110328090.7A CN202110328090A CN113099544A CN 113099544 A CN113099544 A CN 113099544A CN 202110328090 A CN202110328090 A CN 202110328090A CN 113099544 A CN113099544 A CN 113099544A
- Authority
- CN
- China
- Prior art keywords
- wireless node
- data
- time
- frame
- txop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004590 computer program Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 15
- 101100161473 Arabidopsis thaliana ABCB25 gene Proteins 0.000 description 35
- 101100096893 Mus musculus Sult2a1 gene Proteins 0.000 description 35
- 101150081243 STA1 gene Proteins 0.000 description 35
- OVGWMUWIRHGGJP-WVDJAODQSA-N (z)-7-[(1s,3r,4r,5s)-3-[(e,3r)-3-hydroxyoct-1-enyl]-6-thiabicyclo[3.1.1]heptan-4-yl]hept-5-enoic acid Chemical compound OC(=O)CCC\C=C/C[C@@H]1[C@@H](/C=C/[C@H](O)CCCCC)C[C@@H]2S[C@H]1C2 OVGWMUWIRHGGJP-WVDJAODQSA-N 0.000 description 28
- 101000988961 Escherichia coli Heat-stable enterotoxin A2 Proteins 0.000 description 28
- 230000006870 function Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 101000752249 Homo sapiens Rho guanine nucleotide exchange factor 3 Proteins 0.000 description 2
- 102100021689 Rho guanine nucleotide exchange factor 3 Human genes 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- OVGWMUWIRHGGJP-WTODYLRWSA-N (z)-7-[(1r,3s,4s,5r)-3-[(e,3r)-3-hydroxyoct-1-enyl]-6-thiabicyclo[3.1.1]heptan-4-yl]hept-5-enoic acid Chemical compound OC(=O)CCC\C=C/C[C@H]1[C@H](/C=C/[C@H](O)CCCCC)C[C@H]2S[C@@H]1C2 OVGWMUWIRHGGJP-WTODYLRWSA-N 0.000 description 1
- 101100366889 Caenorhabditis elegans sta-2 gene Proteins 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/04—Scheduled access
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the application discloses a data transmission method, a data transmission device, a storage medium and a wireless node, and belongs to the field of wireless communication. The second wireless node receives data sent by the first wireless node in the TXOP transmission opportunity period; wherein the first wireless node is a holder of the TXOP; when the second wireless node has data to be sent to the first wireless node, the second wireless node determines a time t1 at which the first wireless node completes data sending in the TXOP period; the second wireless node transmitting data to the first wireless node according to time t 2; the time interval between the time t2 and the time t1 is the SIFS minimum inter-frame space, and when the first wireless node finishes sending data to the second wireless node, the second wireless node directly sends the data to the first wireless node without performing channel competition, so that the time delay of data transmission can be reduced.
Description
Technical Field
The present application relates to the field of wireless communications, and in particular, to a data transmission method, apparatus, storage medium, and wireless node.
Background
The 802.11 protocol provides that a Station (STA) obtains a usage right of a channel by a channel contention mode, a station which successfully contends for the usage right of the channel sends an RTS (request to send) frame to apply for a TXOP (transmission opportunity) period, the station is also called a TXOP holder of the TXOP period and then sends data in the TXOP period, and after the data is sent, a CF-END (contention-free period END) frame is sent to indicate that the TXOP period ENDs. After the TXOP period is over, all stations wait for at least one DIFS (DCF inter frame space) to re-perform contention for the channel, and perform next data transmission after successfully contending for the channel.
Disclosure of Invention
The data transmission method, the data transmission device, the storage medium and the wireless node provided by the embodiment of the application can solve the problem of large data transmission delay in the related technology. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a data transmission method, where the method includes:
the second wireless node receives data sent by the first wireless node in the TXOP period; wherein the first wireless node is a holder of the TXOP;
when the second wireless node has data to be sent to the first wireless node, the second wireless node determines a time t1 at which the first wireless node completes data sending in the TXOP period;
the second wireless node transmitting data to the first wireless node according to time t 2; wherein the time interval between time t2 and time t1 is the SIFS minimum inter-frame space.
In a second aspect, an embodiment of the present application provides a data transmission apparatus, where the data transmission apparatus includes:
a transceiving unit, configured to receive data sent by a first wireless node in a TXOP period; wherein the first wireless node is a holder of the TXOP;
a processing unit, configured to determine, when there is data to be sent to the first wireless node, a time t1 at which the first wireless node completes data sending in the TXOP period;
the transceiving unit is further configured to transmit data to the first wireless node according to time t 2; wherein the time interval between time t2 and time t1 is the SIFS minimum inter-frame space.
In a third aspect, embodiments of the present application provide a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the above-mentioned method steps.
In a fourth aspect, an embodiment of the present application provides a wireless node, which may include: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:
the second wireless node receives data sent by the first wireless node in the TXOP period, the second wireless node determines the data to be sent to the first wireless node before the TXOP period is finished, channel competition does not need to be executed after the first wireless node completes the sending of the data, the second wireless node is directly switched to a sending direction by a receiving party to send the data to the first wireless node, and the purpose of reducing the data transmission delay is achieved by reducing the time of the channel competition.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an architecture diagram of a wireless communication system provided by an embodiment of the present application;
fig. 2 is a timing diagram of data transmission in the related art;
fig. 3 is another schematic flow chart of a data transmission method according to an embodiment of the present application;
FIGS. 4-6 are timing diagrams of data transmission provided by embodiments of the present application;
FIG. 7 is a schematic structural diagram of a data transmission device provided in the present application;
fig. 8 is a schematic structural diagram of a wireless node provided in the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a network architecture diagram of a wireless communication system. A wireless communication system includes at least one station and at least one Access Point (AP). For example: the wireless fidelity communication system comprises: STA1, STA2, STA3, and AP. Before a station does not establish connection with any access point, the station selects a frequency point to connect to the access point in a passive scanning or active scanning mode, the frequency point is a frequency point of the central frequency of a frequency range, and corresponds to a channel, for example: the station establishes a connection with the access point. And under the condition that the station establishes communication connection with the access point, the station triggers or frames to periodically scan the full channel according to the application program. And the station performs full-channel scanning according to a full-channel set, wherein the full-channel set comprises a plurality of channels, and the full-channel set is related to the support capability and the region of the terminal. For example: the terminal supports 2.4G and 5G wifi channels, when the terminal is powered on, the terminal reads a region code from a Subscriber Identity Module (SIM) and communication capability information from a local memory, and obtains a full channel set associated with the region code and the communication capability information, where the full channel set includes 14 2.4G wifi channels and 24 5G wifi channels, the 2.4GHz wifi channel has 13 channels, and the distribution of the 13 channels is shown in table 1:
TABLE 1
The stations compete for the right of use of the channel in a channel competition mode, and then perform data transmission on the channel within a preset time duration. Referring to fig. 2, after contending for the usage right of the channel based on an EDCA (enhanced distributed channel access) mechanism, the STA1 may perform data transmission within a TXOP period, where the TXOP period is a time interval whose duration may be determined according to an actual requirement, and since the STA3 does not contend for the channel, the value of NAV (network allocation vector) is not 0. STA1 sends a Request To Send (RTS) frame to STA2 before STA2 sends DATA, STA1 returns a Clear To Send (CTS) frame to STA1 when STA2 is ready for DATA reception, STA1 may send a DATA frame to STA2 after receiving the CTS frame from STA2, and STA2 returns an ACK frame to STA1 after successfully receiving the DATA frame; when the TXOP period is over, the STA1 broadcasts a CF-END frame, after each station receives the CF-END frame, the NAV value becomes 0, and then after waiting for a DIFS, the EDCA mechanism is executed to contend for the channel, so that it can be seen that in the related art, at least one DIFS is separated between two adjacent data transmission processes, and therefore the transmission delay is large.
The embodiment of the application provides a data transmission method, which can be applied to a wireless node, and the wireless node can be a station, an access point or a relay node (having the functions of the station and the access point). The wireless node may be a router, a relay amplifier, a smartphone, a tablet, a gaming device, an AR (Augmented Reality) device, an automobile, a data storage device, an audio playback device, a video playback device, a notebook, a desktop computing device, a wearable device such as an electronic watch, an electronic glasses, an electronic helmet, an electronic bracelet, an electronic necklace, an electronic garment, or the like.
The data transmission method provided by the embodiment of the present application will be described in detail below with reference to fig. 2 to 3. The apparatus for performing the data transmission method in the embodiment of the present application may be a wireless node shown in fig. 1.
Referring to fig. 3, a schematic flow chart of a data transmission method according to an embodiment of the present application is provided. As shown in fig. 3, the method of the embodiment of the present application may include the steps of:
s301, the second wireless node receives data sent by the first wireless node in the TXOP period.
The first wireless node is a holder of the TXOP period, and before the first wireless node sends data to the second wireless node, the first wireless node performs channel contention based on a channel contention mechanism, where the channel contention mechanism may be DCF (distributed coordination function) or EDCA (enhanced distributed channel access), and after the first wireless node contends for a usage right of a channel, the first wireless node sends data to the second wireless node within the TXOP period, and the TXOP period is a time interval, and the first wireless node has the usage right of the channel within the TXOP period, and at this time, the first wireless node is also referred to as the holder of the TXOP period, and other wireless nodes except the first wireless node cannot send data within the TXOP period.
The process of the first wireless node transmitting data within the TXOP period may comprise: the first wireless node sends an RTS (request to send) frame to the second wireless node, wherein the RTS frame is used for requesting to send DATA to the second wireless node (receiving party), the second wireless node detects whether the second wireless node is ready to receive DATA after receiving the RTS frame, when the second wireless node determines that the second wireless node is ready to receive the DATA from the first wireless node, the second wireless node sends a CTS (clear to send) frame to the first wireless node, and after receiving the CTS frame from the second wireless node, the first wireless node sends one or more DATA frames to the first wireless node, and the DATA frames are used for carrying traffic DATA. The minimum time interval between two adjacent frames within a TXOP period is called SIFS (short interframe space).
S302, when the second wireless node has data to be sent to the first wireless node, the second wireless node determines time t1 when the first wireless node completes sending data in the TXOP period.
Before the end of the TXOP period, the second wireless node determines that there is data to be sent to the first wireless node, for example: the second wireless node determines that data needs to be sent to the first wireless node at a certain time within the TXOP period, and the second wireless node stores the data to be sent into a cache. The second wireless node determines an end time t1 at which the first wireless node completes data transmission within the TXOP period. When the first wireless node has the capability to transmit the CF-END frame, the second wireless node may base the END time of the CF-END frame as time t 1. When the first wireless node does not have the capability of sending the CF-END frame and the second wireless node receives the DATA frame from the first wireless node, the value of the transmission END indicator in the DATA frame is analyzed, when the value is the first value, the first wireless node is determined to finish DATA transmission, and then the DATA frame is sent to be an ACK frame, and the END time of the ACK frame is taken as time t 1.
In one possible embodiment, the determining, by the second wireless node, a time t1 at which the first wireless node completes data transmission within the TXOP period includes:
when the second wireless node receives a CF-END contention-free period END frame from a first wireless node, determining that the first wireless node completes data transmission;
the END time of the CF-END frame is taken as the time t 1.
For example: referring to fig. 4 and 5, when the owned TXOP period ENDs, the STA1 sends a CF-END (contention-free period END) frame in a broadcast manner, indicating that the TXOP period ENDs, and each station can freely contend for the channel again. STA2 determines that STA1 completes transmitting data in the TXOP period when receiving the CF-END frame from STA1, where the CF-END frame has a start time and an END time, and the END time of the CF-END frame coincides with the END time of the TXOP period, and this embodiment takes the END time of the CF-END frame as time t 1.
In one possible embodiment, the determining, by the second wireless node, a time t1 at which the first wireless node completes data transmission within the TXOP period includes:
the second wireless node receives a DATA frame sent by the first wireless node in a TXOP period;
determining that the first wireless node completes transmission of DATA when a transmission end indicator in the DATA frame is a first value;
the second wireless node sends an ACK frame corresponding to the DATA frame to the first wireless node;
the end time of the ACK frame is taken as the time t 1.
For example: referring to fig. 6, the transmission end indicator carried in the DATA frame is MD, the first value is 0, the STA2 receives the DATA frame from the STA1 in the TXOP period, analyzes the value of the transmission end indicator MD carried in the DATA frame, determines that the STA1 completes transmission of DATA in the TXOP period when MD is 0, and when the STA2 successfully receives the DATA frame, returns the ACK frame associated with the DATA frame to the STA1, where the ACK frame has a start time and an end time, and the end time of the ACK frame is referred to as time t1 in the present application. It is easily understood that time t1 may be before the end time of the TXOP period, and STA2 may transmit data to STA1 in the TXOP period, so that the data may be transmitted using the existing TXOP period, thereby improving the utilization rate of the TXOP period, further delaying data transmission and improving the reliability of data transmission.
S303, the second wireless node transmits data to the first wireless node according to the time t 2.
The second wireless node does not perform the channel contention process, and directly sends one or more DATA frames to the first wireless node according to the time t2, wherein the time interval between the time t1 and the time t2 is SIFS, and the length of SIFS is smaller than DIFS, so that for other wireless nodes except the second wireless node having a transmission requirement, the second wireless node detects that the channel is in a busy state, and cannot successfully contend for the channel until the second wireless node completes the DATA transmission process.
In one or more possible embodiments, the second wireless node sending data to the first wireless node according to time t2, including:
the second wireless node transmits a DATA frame to the first wireless node starting at time t 2.
For example: referring to fig. 4, STA2 transmits a DATA frame to STA1 starting at time t2, without performing a channel contention procedure, and STA1 transmits an ACK frame to STA2 after successfully receiving the DATA frame from STA 2.
In one or more possible embodiments, the second wireless node sending data to the first wireless node according to time t2, including:
the second wireless node transmitting an RTS request to send frame to the first wireless node starting at time t 2;
and when the second wireless node receives a CTS frame returned by the first wireless node in response to the RTS frame, the second wireless node sends a DATA frame to the first wireless node.
For example: referring to fig. 5, STA2 transmits an RTS frame to STA1 starting at time t2, the RTS frame requesting DATA transmission to STA1, returns a CTS frame to STA2 when STA1 is ready to receive DATA, determines that STA is ready to receive DATA when STA2 receives the CTS frame from STA1, then STA2 transmits a DATA frame to STA1, returns an ACK frame to STA2 when STA1 successfully receives the DATA frame from STA2, and STA2 may feed back the reception status of a plurality of DATA frames in one ACK frame. In this embodiment, the STA2 does not perform channel contention after determining that the STA1 completes data transmission, and transmits data to the STA1 after performing the RTS/CTS procedure, so that the success rate of data transmission can be increased in the case where channel interference is large or a hidden node exists.
In one or more embodiments, the time t2 is the time of the ACK frame + SIFS, that is, the second wireless node waits for SIFS after the ACK frame is sent, and then sends data to the first wireless node.
Another example is: referring to fig. 6, STA2 receives a DATA frame from STA1 in the TXOP period, and after parsing the DATA frame, determines that the end transmission indicator MD is 0, and thus determines that the DATA frame is the last DATA frame transmitted by STA1, STA2 returns an ACK frame of the DATA frame to STA1, indicating that STA2 successfully receives the last DATA frame of STA1, and then STA2 transmits the DATA frame to STA1 after time + SIFS of the ACK frame, STA2 converts to the sender, STA1 converts to the receiver, and STA2 does not need to perform a channel contention procedure, so that the delay of DATA transmission can be reduced. It is appreciated that if STA1 transmitted the last DATA frame earlier, STA2 may transmit DATA frames to STA1 before the end of the TXOP period of STA1, which may make full use of the TXOP period held by STA1 and improve channel utilization.
Further, the data transmission method further comprises:
when the second wireless node does not receive the ACK frame corresponding to the DATA frame from the first wireless node within a preset time length, acquiring the retransmission times of the DATA frame;
when the retransmission times are less than the preset times, the second wireless node retransmits a DATA frame to the first wireless node; and outputting sending failure prompt information when the retransmission times are equal to the preset times.
The second wireless node is provided with a counter for counting the sending times of each DATA frame, the preset time length can be determined according to actual requirements, and the method is not limited in the application. After sending the DATA frame to the first wireless node, the second wireless node starts a timer to time, determines that the DATA frame is failed to be sent when the time length of the timer reaches a preset time length and still does not receive an ACK frame returned by the first wireless node, and then obtains a count value of a current counter, wherein when the count value is less than a preset number of times, for example: and the preset times is 3, the DATA frame is retransmitted to the first wireless node, and if the DATA frame is equal to the preset times, the sending failure prompt information is output.
By implementing the embodiment of the application, the second wireless node receives data sent by the first wireless node in the TXOP period, the second wireless node determines the data to be sent to the first wireless node before the TXOP period is finished, the second wireless node does not need to execute channel competition after the first wireless node completes the sending of the data, the second wireless node is directly switched to the sending direction by the receiving party to send the data to the first wireless node, and the purpose of reducing the data transmission delay is achieved by reducing the time of the channel competition.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Please refer to fig. 7, which shows a schematic structural diagram of a data transmission apparatus according to an exemplary embodiment of the present application. The apparatus may be implemented as all or part of a wireless node in software, hardware, or a combination of both. The data transmission device 7 (hereinafter referred to as the device 7) includes a transceiver 701 and a processing unit 702.
A transceiver 701 configured to receive data sent by a first wireless node in a TXOP period; wherein the first wireless node is a holder of the TXOP;
a processing unit 702, configured to determine, when there is data to be sent to the first wireless node, a time t1 at which the first wireless node completes data sending in the TXOP period;
the transceiver 701 is further configured to transmit data to the first wireless node according to time t 2; wherein the time interval between time t2 and time t1 is the SIFS minimum inter-frame space.
In one or more possible embodiments, the determining a time t1 at which the first wireless node completes data transmission within the TXOP period comprises:
when a CF-END contention-free period ending frame from a first wireless node is received, determining that the first wireless node completes data transmission;
the END time of the CF-END frame is taken as the time t 1.
In one or more possible embodiments, the determining a time t1 at which the first wireless node completes data transmission within the TXOP period comprises:
receiving a DATA frame sent by the first wireless node in a TXOP period;
determining that the first wireless node completes transmission of DATA when a transmission end indicator in the DATA frame is a first value;
sending an ACK frame corresponding to the DATA frame to the first wireless node;
the end time of the ACK frame is taken as the time t 1.
In one or more possible embodiments, transmitting data to the first wireless node according to time t2 includes:
a DATA frame is sent to the first wireless node starting at time t 2.
In one or more possible embodiments, the second wireless node sending data to the first wireless node according to time t2, including:
sending an RTS request to send frame to the first wireless node starting at time t 2;
and when receiving a CTS frame returned by the first wireless node in response to the RTS frame, sending a DATA frame to the first wireless node.
In one or more of the possible embodiments,
the processing unit 702 is further configured to obtain the number of retransmissions of the DATA frame when an ACK acknowledgement frame corresponding to the DATA frame from the first wireless node is not received within a preset time duration;
the transceiving unit 701 is further configured to retransmit a DATA frame to the first wireless node when the number of retransmissions is less than a preset number.
In one or more possible embodiments, the processing unit 702 is further configured to:
and outputting sending failure prompt information when the retransmission times are equal to the preset times.
It should be noted that, when the apparatus 7 provided in the foregoing embodiment executes the data transmission method, only the division of the above functional modules is taken as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the data transmission device and the data transmission method provided by the above embodiments belong to the same concept, and details of implementation processes thereof are referred to in the method embodiments and are not described herein again.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
An embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, where the instructions are suitable for being loaded by a processor and executing the method steps in the embodiments shown in fig. 3 to 6, and a specific execution process may refer to specific descriptions of the embodiments shown in fig. 3 to 6, which are not described herein again.
The present application further provides a computer program product, which stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the data transmission method according to the above embodiments.
Referring to fig. 8, which shows a schematic structural diagram of a wireless node according to an embodiment of the present application, the wireless node 9 may be configured to implement the data transmission method provided in the foregoing embodiment. Specifically, the method comprises the following steps:
the wireless node 9 includes a memory 920, a processor 980, and a WiFi module 970, the WiFi module 970 being a wireless module of the present application.
The memory 920 may be used to store software programs and modules, and the processor 980 performs various functional applications and data processing by operating the software programs and modules stored in the memory 920. The memory 920 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the wireless node, and the like. Further, the memory 920 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory 920 may also include a memory controller to provide the processor 980 and the input unit 930 with access to the memory 920.
The processor 980 is the control center of the wireless node, connects various parts of the entire wireless node using various interfaces and lines, and performs various functions of the wireless node and processes data by running or executing software programs and/or modules stored in the memory 920 and using data stored in the memory 920, thereby performing overall monitoring of the wireless node. Optionally, processor 980 may include one or more processing cores; processor 980 may, among other things, integrate an application processor, which primarily handles operating systems, user interfaces, and applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 980.
WiFi belongs to short distance wireless transmission technology, and the wireless node can help the user send and receive e-mail, browse web page and access streaming media etc. through the WiFi module 970, which provides wireless broadband internet access for the user.
Specifically, in the embodiment, the wireless node 9 includes a memory and one or more programs, wherein the one or more programs are stored in the memory, and the one or more programs configured to be executed by the one or more processors include the data transmission method for performing the data transmission method described in fig. 2 to 7.
The embodiment of the present application and the method embodiments of fig. 3 to 6 are based on the same concept, and the technical effects brought by the embodiment are also the same, and the specific process may refer to the method embodiments of fig. 2 to 3, which are not described herein again.
Optionally, the wireless node 9 further comprises a display unit 940. The display unit 940 may be used to display information input by or provided to the user as well as various graphical user interfaces of the wireless node, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 940 may include a Display panel 941, and optionally, the Display panel 941 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. Further, the touch device 931 may overlay the display panel 941, and when the touch device 931 detects a touch operation thereon or nearby, the touch device transmits the touch operation to the processor 980 to determine the type of touch event, and then the processor 980 provides a corresponding visual output on the display panel 941 according to the type of touch event. Although in FIG. 8, touch device 931 and display panel 941 are shown as two separate components to implement input and output functions, in some embodiments, touch device 931 and display panel 941 may be integrated to implement input and output functions.
Optionally, the wireless node 9 further includes: an input unit 930. The input unit 930 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. Specifically, the input unit 930 may include a touch device 931 (e.g., a touch screen, a touch pad, or a touch frame). The touch device 931, also referred to as a touch screen or a touch pad, may collect a touch operation performed by a user on or near the touch device 931 (e.g., a user operating the touch device 931 or near the touch device 931 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connecting device according to a preset program. Alternatively, the touch device 931 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 980, and can receive and execute commands sent by the processor 980. In addition, the touch device 931 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave.
Optionally, the wireless node may include RF (Radio Frequency) circuitry 910, memory 920 including one or more computer-readable storage media, an input unit 930, a display unit 940, a sensor 950, audio circuitry 960, a WiFi (wireless fidelity) module 960, a processor 980 including one or more processing cores, and a power supply 990, among other components. Those skilled in the art will appreciate that the wireless node architecture shown in fig. 8 does not constitute a limitation of wireless nodes and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
Wherein:
the RF circuit 910 may be used for receiving and transmitting signals during a message transmission or call, and in particular, for receiving downlink information from a base station and then processing the received downlink information by the one or more processors 980; in addition, data relating to uplink is transmitted to the base station. In general, RF circuit 910 includes, but is not limited to, an antenna, at least one Amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like. In addition, the RF circuit 910 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to 3GPP (3rd Generation Partnership Project, 3GPP for short), 3GPP2 (3rd Generation Partnership Project 2, 3GPP2 for short), UMTS (Universal Mobile Telecommunications System, UMTS for short), LTE (Long Time Evolution, LTE for short), LTE-a (LTE-Advanced, Long Term Evolution upgrade, LTE-a for short), WIMAX (Worldwide Access for Microwave Access, WIMAX for short), HSDPA (High Speed Downlink Packet Access, HSDPA for short), HSUPA (High Speed Uplink Packet Access, TDMA for short), and Multiple Access Time Division Multiple Access (HSUPA for short), which may be implemented by using any communication standard or protocol, including but not limited to 3GPP (3rd Generation Partnership Project, UMTS for short), UMTS (Universal Mobile Telecommunications System, UMTS for short), LTE (Long Time Evolution, LTE for short), LTE-a (LTE-Advanced Long Term Evolution upgrade, LTE-a for short), WIMAX (Worldwide Interoperability for Microwave Access, TDMA for short), and TDMA for short WCDMA (Wideband Code Division Multiple Access, WCDMA for Short), GSM (Global System for Mobile Communication, GSM for Short, email, SMS (Short Messaging Service), etc.
Optionally, the wireless node 9 may also include at least one sensor 950, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that can adjust the brightness of the display panel 941 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 941 and/or backlight when the wireless node moves to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the sensor is stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration) for recognizing the attitude of a wireless node, and related functions (such as pedometer and tapping) for vibration recognition; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured in the wireless node, detailed descriptions thereof are omitted.
The audio circuitry 960, speaker 961, microphone 962 may provide an audio interface between a user and a terminal device. The audio circuit 960 may transmit the electrical signal converted from the received audio data to the speaker 961, and convert the electrical signal into a sound signal for output by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electric signal, converts the electric signal into audio data after being received by the audio circuit 960, and outputs the audio data to the processor 980 for processing, and then transmits the audio data to another terminal device through the RF circuit 910, or outputs the audio data to the memory 920 for further processing. The audio circuit 960 may also include an earbud jack to provide communication of peripheral headphones with the terminal device.
Optionally, the wireless node 9 further includes a power supply 990 (e.g., a battery) for supplying power to various components, wherein the power supply may be logically connected to the processor 980 via a power management system, so as to manage charging, discharging, and power consumption via the power management system. Power supply 990 may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and the like.
Optionally, the wireless node 9 may further include a camera 991, a bluetooth module, and the like, where the camera 991 is configured to expose the surrounding environment to obtain a frame image, and in one manner, the camera 991 transmits parameters of the frame image obtained by exposure to the processor 980 so that the processor 980 performs processing such as denoising and enhancing on the frame image to generate a picture that can be displayed to the user; in yet another alternative, the camera 991 may be equipped with an image processor chip, which may perform a preliminary processing on the frame of image, and then transmit the processed data to the processor 980 to enable the processor 980 to ultimately produce an image that can be displayed to a user. Further, the number of the cameras 991 may be one or more.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method of data transmission, the method comprising:
the second wireless node receives data sent by the first wireless node in the TXOP transmission opportunity period; wherein the first wireless node is a holder of the TXOP;
when the second wireless node has data to be sent to the first wireless node, the second wireless node determines a time t1 at which the first wireless node completes data sending in the TXOP period;
the second wireless node transmitting data to the first wireless node according to time t 2; wherein the time interval between time t2 and time t1 is the SIFS minimum inter-frame space.
2. The method of claim 1, wherein the second wireless node determining a time t1 at which the first wireless node completes data transmission within the TXOP period comprises:
when the second wireless node receives a CF-END contention-free period END frame from a first wireless node, determining that the first wireless node completes data transmission;
the END time of the CF-END frame is taken as the time t 1.
3. The method of claim 1, wherein the second wireless node determining a time t1 at which the first wireless node completes data transmission within the TXOP period comprises:
the second wireless node receives a DATA frame sent by the first wireless node in a TXOP period;
determining that the first wireless node completes transmission of DATA when a transmission end indicator in the DATA frame is a first value;
the second wireless node sends an ACK frame corresponding to the DATA frame to the first wireless node;
the end time of the ACK frame is taken as the time t 1.
4. The method of claim 1, wherein the second wireless node sending data to the first wireless node according to time t2, comprising:
the second wireless node transmits a DATA frame to the first wireless node starting at time t 2.
5. The method of claim 1, wherein the second wireless node sending data to the first wireless node according to time t2, comprising:
the second wireless node transmitting an RTS request to send frame to the first wireless node starting at time t 2;
and when the second wireless node receives a CTS frame returned by the first wireless node in response to the RTS frame, the second wireless node sends a DATA frame to the first wireless node.
6. The method of claim 4 or 5, further comprising:
when the second wireless node does not receive the ACK frame corresponding to the DATA frame from the first wireless node within a preset time length, acquiring the retransmission times of the DATA frame;
and when the retransmission times are less than the preset times, the second wireless node retransmits the DATA frame to the first wireless node.
7. The method of claim 6, further comprising:
and outputting sending failure prompt information when the retransmission times are equal to the preset times.
8. A data transmission apparatus, comprising:
a transceiving unit, configured to receive data sent by a first wireless node in a TXOP period; wherein the first wireless node is a holder of the TXOP;
a processing unit, configured to determine, when there is data to be sent to the first wireless node, a time t1 at which the first wireless node completes data sending in the TXOP period;
the transceiving unit is further configured to transmit data to the first wireless node according to time t 2; wherein the time interval between time t2 and time t1 is the SIFS minimum inter-frame space.
9. A computer storage medium, characterized in that it stores a plurality of instructions adapted to be loaded by a processor and to carry out the method steps according to any one of claims 1 to 11.
10. A wireless node, comprising: a processor, a memory, and a wireless module; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110328090.7A CN113099544B (en) | 2021-03-26 | 2021-03-26 | Data transmission method, device, storage medium and wireless node |
| PCT/CN2021/132981 WO2022199095A1 (en) | 2021-03-26 | 2021-11-25 | Data transmission method and apparatus, storage medium, and wireless node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110328090.7A CN113099544B (en) | 2021-03-26 | 2021-03-26 | Data transmission method, device, storage medium and wireless node |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113099544A true CN113099544A (en) | 2021-07-09 |
| CN113099544B CN113099544B (en) | 2022-08-16 |
Family
ID=76670325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110328090.7A Active CN113099544B (en) | 2021-03-26 | 2021-03-26 | Data transmission method, device, storage medium and wireless node |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113099544B (en) |
| WO (1) | WO2022199095A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199095A1 (en) * | 2021-03-26 | 2022-09-29 | 珠海泰芯半导体有限公司 | Data transmission method and apparatus, storage medium, and wireless node |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548573A (en) * | 2006-11-15 | 2009-09-30 | 高通股份有限公司 | Transmissions to multiple stations in wireless communication systems |
| WO2013191439A1 (en) * | 2012-06-18 | 2013-12-27 | 엘지전자 주식회사 | Method and device for controlling channel access in wireless lan system |
| CN104995982A (en) * | 2013-02-15 | 2015-10-21 | Lg电子株式会社 | Method and device for transmitting/receiving frame in accordance with bandwidth thereof in WLAN system |
| GB201517294D0 (en) * | 2015-09-30 | 2015-11-11 | Canon Kk | Methods and systems for reserving a transmission opportunity for a plurality of wireless communication devices belonging to a collaborative group |
| US20160037553A1 (en) * | 2014-07-29 | 2016-02-04 | Qualcomm Incorporated | Low latency wlan medium access |
| CN105493608A (en) * | 2013-08-14 | 2016-04-13 | Lg电子株式会社 | Method and device for transmitting data in wireless lan |
| CN106304390A (en) * | 2015-06-05 | 2017-01-04 | 中兴通讯股份有限公司 | A kind of channel access method, website and system |
| US20170055287A1 (en) * | 2014-04-30 | 2017-02-23 | Zte Corporation | Channel access method and system, stations and computer readable storage medium |
| CN108495372A (en) * | 2018-01-19 | 2018-09-04 | 西安电子科技大学 | In a kind of WLAN in cell multi-site Simultaneous Transmission of Data method |
| CN112492682A (en) * | 2020-06-01 | 2021-03-12 | 中兴通讯股份有限公司 | Data sending method and device and data receiving method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4575265B2 (en) * | 2005-09-29 | 2010-11-04 | 株式会社東芝 | Wireless communication device |
| CN105406948B (en) * | 2014-09-12 | 2020-03-06 | 中兴通讯股份有限公司 | Method for realizing parallel multi-user data transmission and main node |
| CN111314966B (en) * | 2020-02-20 | 2022-11-29 | 展讯通信（上海）有限公司 | Wireless data transmission method and device, storage medium, AP and STA |
| CN113099544B (en) * | 2021-03-26 | 2022-08-16 | 珠海泰芯半导体有限公司 | Data transmission method, device, storage medium and wireless node |
-
2021
- 2021-03-26 CN CN202110328090.7A patent/CN113099544B/en active Active
- 2021-11-25 WO PCT/CN2021/132981 patent/WO2022199095A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548573A (en) * | 2006-11-15 | 2009-09-30 | 高通股份有限公司 | Transmissions to multiple stations in wireless communication systems |
| WO2013191439A1 (en) * | 2012-06-18 | 2013-12-27 | 엘지전자 주식회사 | Method and device for controlling channel access in wireless lan system |
| CN104488347A (en) * | 2012-06-18 | 2015-04-01 | Lg电子株式会社 | Method and device for controlling channel access in wireless LAN system |
| CN104995982A (en) * | 2013-02-15 | 2015-10-21 | Lg电子株式会社 | Method and device for transmitting/receiving frame in accordance with bandwidth thereof in WLAN system |
| CN105493608A (en) * | 2013-08-14 | 2016-04-13 | Lg电子株式会社 | Method and device for transmitting data in wireless lan |
| US20170055287A1 (en) * | 2014-04-30 | 2017-02-23 | Zte Corporation | Channel access method and system, stations and computer readable storage medium |
| US20160037553A1 (en) * | 2014-07-29 | 2016-02-04 | Qualcomm Incorporated | Low latency wlan medium access |
| CN106304390A (en) * | 2015-06-05 | 2017-01-04 | 中兴通讯股份有限公司 | A kind of channel access method, website and system |
| GB201517294D0 (en) * | 2015-09-30 | 2015-11-11 | Canon Kk | Methods and systems for reserving a transmission opportunity for a plurality of wireless communication devices belonging to a collaborative group |
| CN108495372A (en) * | 2018-01-19 | 2018-09-04 | 西安电子科技大学 | In a kind of WLAN in cell multi-site Simultaneous Transmission of Data method |
| CN112492682A (en) * | 2020-06-01 | 2021-03-12 | 中兴通讯股份有限公司 | Data sending method and device and data receiving method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199095A1 (en) * | 2021-03-26 | 2022-09-29 | 珠海泰芯半导体有限公司 | Data transmission method and apparatus, storage medium, and wireless node |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113099544B (en) | 2022-08-16 |
| WO2022199095A1 (en) | 2022-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210153259A1 (en) | Random access method and related device | |
| US11582791B2 (en) | PUCCH collision processing method and terminal | |
| US11343855B2 (en) | Method and device for random access and terminal | |
| CN112996050B (en) | Data transmission method, device, storage medium and wireless node | |
| US11234275B2 (en) | Method for receiving and sending information, user equipment and network device | |
| CN110719628B (en) | Transmission method, terminal equipment and network equipment | |
| CN112566273B (en) | Data receiving and sending method, terminal and network side equipment | |
| CN110809289B (en) | Multimode communication method, terminal and network side equipment | |
| US20210153263A1 (en) | Random access method and related device | |
| US11601822B2 (en) | Random access method and communications device | |
| US20230300897A1 (en) | Random access method, terminal, and network device | |
| CN111757535A (en) | Random access method, indication method, network device and terminal | |
| CN113099544B (en) | Data transmission method, device, storage medium and wireless node | |
| CN111836361A (en) | Data receiving method, data sending method, terminal and network equipment | |
| CN111263462A (en) | Random access method and device | |
| CN111147195A (en) | Data transmission method, receiving method, terminal and network equipment | |
| CN111836397B (en) | Random access method, terminal and network side equipment | |
| CN112804754B (en) | Resource determination method, resource configuration method, terminal and network equipment | |
| CN111836311B (en) | Capability negotiation method, terminal and network equipment | |
| CN113133126B (en) | Method, terminal and network equipment for converting working frequency points | |
| CN111757530B (en) | Random access method and communication equipment | |
| CN112104984A (en) | Electronic price tag parallel drawing method and device and computer readable storage medium | |
| CN112584536B (en) | Uplink transmission method, resource allocation method, terminal and network side equipment | |
| CN112243276A (en) | Random access method, information sending method, resource configuration method, network side equipment and terminal | |
| CN113556781A (en) | Data receiving method, information configuration method, terminal and network equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |