CN114846834A

CN114846834A - Uplink delay scheduling method, system and storage medium

Info

Publication number: CN114846834A
Application number: CN201980103223.1A
Authority: CN
Inventors: 冯玺宝; 吴毅凌; 李铮; 庄亮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2022-08-02
Also published as: WO2021134630A1

Abstract

The embodiment of the application discloses an uplink delay scheduling method, a system and a storage medium, wherein the method comprises the following steps: receiving a time delay trigger frame sent by an AP; wherein the time delayed trigger frame includes a common information field, the common information field including a first reserved field for indicating whether the time delayed trigger frame includes a field of a subordinate common information trigger; when the value of the first reserved field is a first value and the value of the first bitmap field is a second value, the first content information list carries the first uplink data delay time; analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; and after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time. By adopting the above means, the multi-user uplink transmission time alignment indication under long-distance coverage can be realized, and the time division of multiple users of Trigger can also be realized.

Description

Uplink delay scheduling method, system and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, a system, and a storage medium for uplink delay scheduling.

Background

A new uplink scheduling characteristic is added in a newly published standard protocol IEEE P802.11axTM/D4.2 (hereinafter referred to as 802.11ax) of a new generation of Wireless Fidelity wifi Wireless fidelity technology wifi 6. A trigger Frame is added, which can indicate a plurality of STAs to simultaneously transmit uplink data in a Multi-User Multiple-Input Multiple-Output (MU-MIMO) mode and an Orthogonal Frequency Division Multiple Access (OFDMA) mode. The trigger Frame includes indication information required by the STA to transmit uplink data, such as mcs (modulation and coding scheme), nss (number of spatial streams), length, and ru (resource unit) indication. After receiving the trigger Frame, the STA needs to send uplink data with the indicated length within 16us according to the scheduling indication information.

When the system adopting the 802.11ax protocol is used for covering scenes in a long distance, for example, a small number of cameras in video return service are distributed in a range of 3km or even 5km in a scattered manner. It requires the use of multiple AP devices to fulfill the coverage requirement, however, it requires a higher cost. At this time, if the capacity requirement of a single AP can be met, the STA needs to perform better uplink multiplexing to fully utilize the time-frequency resources.

In the existing WIFI system, only one hundred meter coverage is considered, so for frequency division and space division multiplexing of uplink data transmission, it is necessary to design a longer CP (cyclic prefix), for example, a maximum of 3.2us is used for hard reactance. However, for video scenes, the CP cannot be solved by users with scattered and less wide coverage. In the existing WIFI system, only indication of frequency domain and space domain resources is supported for scheduled uplink data transmission, indication description of time domain information is not supported, an STA is required to complete uplink data transmission according to a short interframe space SIFS after an AP indication receives a trigger frame, and a trigger is required to be arranged in front of each uplink data frame; and the timing sequences of Trigger and uplink Data UL Data do not support the completion of uplink alignment in a manner of aligning farthest coverage.

Disclosure of Invention

The embodiment of the application provides an uplink delay scheduling method, system and storage medium, which can realize uplink data alignment.

A first aspect of an embodiment of the present application provides an uplink delay scheduling method, including:

receiving a time delay trigger frame sent by an AP; wherein the time delayed trigger frame includes a common information field, the common information field including a first reserved field for indicating whether the time delayed trigger frame includes a field of a subordinate common information trigger; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries first uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the first uplink data delay time;

analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information;

and after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time.

The embodiment of the present application redefines the Common information field Common Info described above, so that all users in the delay time indicator trigger of the Common information field are scheduled according to the delay indication time. All the user time domains follow the indication of the common information domain, and the uplink lengths are the same and are distributed on time and frequency domain resources uniformly. By adopting the above means, the time alignment indication of multi-user uplink transmission under long-distance coverage can be realized, and further, the time division of multiple users of Trigger can be realized.

The public information field further comprises a trigger frame type, wherein the trigger frame type is used for indicating the type of the trigger frame, and the value of the trigger frame type is any integer between 8 and 15.

The time delay trigger frame further comprises a user information field, wherein the user information field comprises a second reserved field, and the second reserved field is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate user information or not; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

the sending the uplink frame to the AP at the interval of the first uplink data delay time after receiving the time delay trigger frame specifically includes:

recording the second uplink data delay time as the first uplink data delay time;

after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time;

or, the sending the uplink frame to the AP at the interval of the first uplink data delay time after receiving the time delay trigger frame specifically includes:

acquiring the sum of the first uplink data delay time and the second uplink data delay time, and recording the sum of the first uplink data delay time and the second uplink data delay time as the first uplink data delay time;

A second aspect of the present embodiment provides an uplink delay scheduling method, including:

receiving a time delay trigger frame sent by an AP; the time delayed trigger frame includes a user information field including a second reserved field for indicating whether the time delayed trigger frame includes a field for a subordinate user information trigger; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

and after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the second uplink data delay time.

The new user information field provided by the embodiment of the application is used for indicating the user delay scheduling time indicated by the AID 12. The field Trigger Dependent user Info for the Basic Delay Trigger variable triggered by the Dependent user information can support time division scheduling of the same user. The fields triggered by the subordinate user information can also support time division scheduling of different users.

The time delay trigger frame further comprises a public information field, the public information field further comprises a trigger frame type, the trigger frame type is used for indicating the type of the trigger frame, and the value of the trigger frame type is any integer between 8 and 15.

A third aspect of the embodiments of the present application provides an uplink delay scheduling method, including:

receiving an MAC frame sent by an AP; the MAC frame comprises an HT control field, wherein the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the sixth value, the control ID is used to indicate that the control information carries uplink data delay time; the MAC frame is any one of a data frame and a management frame;

analyzing the MAC frame to obtain the uplink data delay time;

and after receiving a trigger frame sent by the AP, sending an uplink frame to the AP at an interval of the uplink data delay time, wherein the uplink frame is obtained by analyzing the trigger frame sent by the AP.

A fourth aspect of the present embodiment provides an uplink delay scheduling method, including:

receiving a broadcast frame sent by an AP; the broadcast frame comprises a specific provider domain and a content ID, wherein when the value of the content ID is a seventh value, the specific provider domain carries uplink data delay time;

analyzing the broadcast frame to obtain the uplink data delay time;

and sending an uplink frame to the AP at an interval of the uplink data delay time after receiving the trigger frame sent by the AP, wherein the uplink frame is obtained by analyzing the trigger frame sent by the AP.

In the embodiment of the present application, the time indication of the delay scheduling is of a semi-static broadcast type. I.e., by default, the STA requiring access needs the capability to support the semi-static broadcast type described above. The frequency of semi-static adjustment in the scheme only supports Beacon period adjustment.

A fifth aspect of the embodiments of the present application provides a method for scheduling uplink delay, including:

receiving an MAC frame sent by an AP, wherein the MAC frame comprises a time delay trigger frame and a downlink data frame;

the time delay trigger frame comprises a public information field, the public information field comprises a first reserved field, and the first reserved field is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate public information or not; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the uplink data delay time;

the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the eighth value, the control ID is used to indicate that the control information carries short trigger response scheduling;

analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain short trigger response scheduling;

after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the uplink data delay time; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

A sixth aspect of the present embodiment provides a method for uplink delay scheduling, including:

receiving an MAC frame sent by an AP, wherein the MAC frame comprises a trigger frame and a downlink data frame;

the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes a fifth value, the control field includes a control list, the control list includes a first control ID and first control information, and when the first control ID takes a sixth value, the first control ID is used to indicate that the first control information carries uplink data delay time; the control list further comprises a second control ID and second control information, and when the value of the second control ID is an eighth value, the second control ID is used for indicating that the second control information carries short trigger response scheduling; the MAC frame is any one of a data frame and a management frame;

analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain the uplink data delay time and the short trigger response scheduling;

after receiving the MAC frame, sending the uplink frame to the AP at the interval of the uplink data delay time; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

A seventh aspect of the present embodiment provides an uplink delay scheduling method, including:

receiving a first MAC frame and a second MAC frame sent by an AP, wherein the first MAC frame comprises a first downlink data frame; the second MAC frame comprises a trigger frame and a second downlink data frame;

the first downlink data frame comprises a first HT control field, and the first HT control field is used for indicating whether the first MAC frame comprises a first control field or not; when the first HT control field takes a value of a fifth value, the first control field includes a first control list, the first control list includes a first control ID and first control information, and when the first control ID takes a value of a sixth value, the first control ID is used to indicate that the first control information carries uplink data delay time;

the second downlink data frame includes a second HT control field for indicating whether the second MAC frame includes a second control field; when the second HT control field takes a value of a fifth value, the second control field includes a second control list, the second control list includes a second control ID and second control information, and when the second control ID takes a value of an eighth value, the second control ID is used to indicate that the second control information carries a short trigger response schedule;

the first MAC frame and the second MAC frame are any one of a data frame and a management frame respectively;

analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the first downlink data frame to obtain the uplink data delay time, and analyzing the second downlink data frame to obtain the short trigger response scheduling;

after receiving the second MAC frame, sending the uplink frame to the AP at the interval of the uplink data delay time; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

An eighth aspect of the present embodiment provides an uplink delay scheduling method, including:

receiving a broadcast frame sent by an AP; the broadcast frame comprises a specific provider field, the specific provider field comprises a content ID and a specific provider domain, and when the content ID takes a value as a seventh value, the specific provider domain carries uplink data delay time;

receiving a MAC frame sent by an AP, wherein the MAC frame comprises a trigger frame and a downlink data frame, the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the eighth value, the control ID is used to indicate that the control information carries short trigger response scheduling;

analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the broadcast frame to obtain the uplink data delay time; analyzing the downlink data frame to obtain the short trigger response scheduling;

A ninth aspect of the present embodiment provides an uplink delay scheduling system, including:

a receiving module, configured to receive a time delay trigger frame sent by an AP; wherein the time delayed trigger frame includes a common information field, the common information field including a first reserved field for indicating whether the time delayed trigger frame includes a field of a subordinate common information trigger; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries first uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the first uplink data delay time;

the processing module is used for analyzing the time delay trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information;

and a sending module, configured to send the uplink frame to the AP at an interval of the first uplink data delay time after receiving the time delay trigger frame.

Further, the time delay trigger frame further includes a user information field, where the user information field includes a second reserved field, and the second reserved field is used to indicate whether the time delay trigger frame includes a field triggered by subordinate user information; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

the sending module is specifically configured to:

or, the sending module is specifically configured to:

A tenth aspect of the present embodiment provides an uplink delay scheduling system, including:

a receiving module, configured to receive a time delay trigger frame sent by an AP; the time delay trigger frame comprises a user information field, the user information field comprises a second reserved field, and the second reserved field is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate user information; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

and a sending module, configured to send the uplink frame to the AP at an interval of the second uplink data delay time after receiving the time delay trigger frame.

An eleventh aspect of the present embodiment provides an uplink delay scheduling system, including:

a receiving module, configured to receive an MAC frame sent by an AP; the MAC frame comprises an HT control field, wherein the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the sixth value, the control ID is used to indicate that the control information carries uplink data delay time; the MAC frame is any one of a data frame and a management frame;

the processing module is used for analyzing the MAC frame to obtain the uplink data delay time;

and a sending module, configured to send an uplink frame to the AP at an interval of the uplink data delay time after receiving a trigger frame sent by the AP, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.

A twelfth aspect of the present embodiment provides an uplink delay scheduling system, including:

a receiving module, configured to receive a broadcast frame sent by an AP; the broadcast frame comprises a specific provider domain and a content ID, wherein when the value of the content ID is a seventh value, the specific provider domain carries uplink data delay time;

the processing module is used for analyzing the broadcast frame to obtain the uplink data delay time;

A thirteenth aspect of the present embodiment provides an uplink delay scheduling system, including:

the receiving module is used for receiving an MAC frame sent by the AP, wherein the MAC frame comprises a time delay trigger frame and a downlink data frame;

the processing module is used for analyzing the time delay trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain short trigger response scheduling;

a sending module, configured to send the uplink frame to the AP at an interval of the uplink data delay time after receiving the time delay trigger frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

A fourteenth aspect of the present embodiment provides an uplink delay scheduling system, including:

the receiving module is used for receiving an MAC frame sent by the AP, wherein the MAC frame comprises a trigger frame and a downlink data frame;

the processing module is used for analyzing the trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain the uplink data delay time and the short trigger response scheduling;

a sending module, configured to send the uplink frame to the AP at an interval of the uplink data delay time after receiving the MAC frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

A fifteenth aspect of the present embodiment provides an uplink delay scheduling system, including:

the receiving module is used for receiving a first MAC frame and a second MAC frame sent by an AP, wherein the first MAC frame comprises a first downlink data frame; the second MAC frame comprises a trigger frame and a second downlink data frame;

the processing module is used for analyzing the trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the first downlink data frame to obtain the uplink data delay time, and analyzing the second downlink data frame to obtain the short trigger response scheduling;

a sending module, configured to send the uplink frame to the AP at an interval of the uplink data delay time after receiving the second MAC frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

A sixteenth aspect of the present embodiment provides an uplink delay scheduling system, including:

a receiving module, configured to receive a broadcast frame sent by an AP; the broadcast frame comprises a specific provider field, the specific provider field comprises a content ID and a specific provider domain, and when the content ID takes a value as a seventh value, the specific provider domain carries uplink data delay time;

the processing module is used for analyzing the trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the broadcast frame to obtain the uplink data delay time; analyzing the downlink data frame to obtain the short trigger response scheduling;

A seventeenth aspect of embodiments of the present application provides a computer-readable storage medium having a computer program stored thereon, the computer program being executable by a processor to implement the method.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings referred to in the embodiments or the background art of the present application will be briefly described below.

Fig. 1 is a partial schematic diagram of a trigger Frame format in a standard protocol 802.11 ax;

FIG. 2 is a diagram illustrating a portion of fields contained in a common information field common in a trigger frame of a standard protocol 802.11 ax;

FIG. 3 is a diagram illustrating a portion of fields contained in a user information field userinfo in a trigger frame of a standard protocol 802.11 ax;

fig. 4 is a flowchart illustrating an uplink delay scheduling method according to an embodiment of the present application;

fig. 5 is a schematic partial structure diagram of a public information domain provided in an embodiment of the present application;

fig. 6 is a schematic diagram illustrating a format of a subordinate public information trigger field according to an embodiment of the present application;

fig. 7 is a schematic partial structure diagram of a user information field according to an embodiment of the present application;

fig. 8 is a schematic diagram illustrating a format of a subordinate user information trigger field according to an embodiment of the present application;

fig. 9 is a schematic diagram of an uplink delay scheduling scenario provided in an embodiment of the present application;

fig. 10 is a flowchart illustrating an uplink delay scheduling method according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a MAC frame according to an embodiment of the present application;

fig. 12 is a schematic diagram illustrating a field structure of an a-control subfield in a MAC frame according to an embodiment of the present application;

fig. 13 is a schematic diagram of a field structure of a control list in a MAC frame according to an embodiment of the present application;

fig. 14 is a flowchart illustrating an uplink delay scheduling method according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a broadcast frame according to an embodiment of the present application;

fig. 16 is a schematic diagram of an uplink delay scheduling scenario provided in an embodiment of the present application;

fig. 17 is a schematic diagram of another uplink delay scheduling scenario provided in the embodiment of the present application;

fig. 18 is a schematic diagram of another uplink delay scheduling scenario provided in an embodiment of the present application.

Detailed Description

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

Referring to fig. 1, a part of a trigger Frame format in a standard protocol 802.11ax recently published by wifi6 is shown. The trigger frame includes a control frame, a duration, an RA (receiving STA address), a ta (transmitting STA address), a common information field common info, a user information field userinfolist, a padding field, and a frame check sequence fcs (frame check sequence). Wherein, as shown in table one, it is a trigger frame type field coding table.

Watch 1

Trigger Type subfield value	Trigger frame variant
0	Basic
1	Beamforming Report Poll(BFRP)
2	MU-BAR
3	MU-RTS
4	Buffer Status Report Poll(BQRP)
5	GCR MU-BAR
6	Bandwidth Query Report Poll(BQRP)
7	NDP Feedback Report Poll(NFRP)
8-15	Reserved

And the trigger type for scheduling the uplink data is a Basic type. And when the value of triggertype is 0, the corresponding trigger type is a Basic type. For Basic trigger, part of fields contained in the common information field common info are shown in fig. 2. It includes: trigger frame Type triggertype, UL Length (Length Of scheduled uplink data), UL BW (bandwidth Of TB PPDU indicated in HE-SIG-a), GI And LTF Type (guard interval And HE-LTF Type indication), MU-MIMO LTF Mode (Mode Of LTF in Multi-User MIMO Mode), Number Of HE-LTF Symbols And Midamble period, UL STBC (uplink space-time-block-coding), UL Spatial Reuse (uplink Spatial stream usage), Doppler (high speed time domain pilot insertion indication), And Reserved field Reserved.

Referring to fig. 3, fig. 3 is a schematic diagram of a part of fields included in the user information field userinfo. It includes: user identification indicator (AID 12), frequency domain resource indication Information RU Allocation, UL MCS (uplink coded modulation indication Information), SS Allocation/RA-RU Information (spatial stream indication Information), UL Target RSSI (uplink desired transmit signal power RSSI), Reserved field Reserved, and the like.

In the uplink scheduling method, after receiving a control-type MAC frame sent by an AP, an STA obtains scheduling indication information by analyzing the MAC frame, then generates an uplink frame according to the scheduling indication information, and sends the uplink frame through an air interface after SIFS time. The scheduling indication information may include: MCS, NSS, RU Allocation, Length, etc. The scheduling indication information may indicate that 1 trigger frame schedules one user, and the user information field user Info List only contains information of one user. It can accomplish scheduling of multiple users through multiplexing of MU MIMO or OFDMA. The scheduling indication information may also indicate that a plurality of users are scheduled through one trigger frame. That is, all users share the same Common information field and may include multiple user information fields to construct a frame to indicate uplink scheduling of multiple users.

In the existing WIFI system, only indication of frequency domain and space domain resources is supported for scheduled uplink data transmission, indication description of time domain information is not supported, an STA is required to complete uplink data transmission according to a short interframe space SIFS after an AP indication receives a trigger frame, and a trigger is required to be arranged in front of each uplink data frame; and the timing sequences of Trigger and uplink Data UL Data do not support the completion of uplink alignment in a manner of aligning farthest coverage. Therefore, the scheme provides an uplink delay scheduling method. After the short interframe space (SIFS) (short interframe space) interval indication time after the trigger frame is received is indicated by the AP, the STA sends uplink data. And completing multi-user uplink transmission under one Trigger frame through the time indication information, further realizing multi-user uplink transmission time alignment indication under long-distance coverage, and further realizing time division of multiple Trigger users.

As shown in fig. 4, an embodiment of the present application provides an uplink delay scheduling method. The method comprises

steps

401 and 403, which are as follows:

401. receiving a time delay trigger frame sent by an AP; wherein the time delayed trigger frame includes a common information field, the common information field including a first reserved field for indicating whether the time delayed trigger frame includes a field of a subordinate common information trigger; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the uplink data delay time;

the time delay trigger frame is a new trigger frame type. As shown in table two.

Watch two

Trigger Type subfield value	Trigger frame variant
0	Basic
1	Beamforming Report Poll(BFRP)
2	MU-BAR
3	MU-RTS
4	Buffer Status Report Poll(BQRP)
5	GCR MU-BAR

6	Bandwidth Query Report Poll(BQRP)
7	NDP Feedback Report Poll(NFRP)
8	Basic Delay
9-15	Reserved

The difference from the table one is that when the triggertype value is 8, the corresponding type is the Basic Delay type, that is, the time Delay trigger frame is the Basic Delay trigger. Of course, the value of triggertype is not limited here, and may also be any integer value of 9, 10, 11, 12, 13, 14, or 15.

Specifically, for Basic Delaytrigger, its common information field common info includes: triggertype, UL Length (Length Of scheduled uplink data), UL BW (bandwidth Of TB PPDU indicated in HE-SIG-a), GI And LTF Type (guard interval And HE-LTF Type indication), MU-MIMO LTF Mode (Mode Of LTF in Multi-User MIMO Mode), Number Of HE-LTF Symbols And Midamble Periodicity (Number Of Symbols Of pilot encryption period And HE-LTF), UL STBC (uplink space-time-block-coding), UL Spatial Reuse (uplink Spatial stream usage), Doppler (high speed time domain pilot insertion indication), And Reserved field Reserved. Wherein, unlike the prior art, the embodiment redefines the Reserved field Reserved. The Reserved field Reserved is defined to indicate whether the time Delay Trigger frame includes a Dependent public information Trigger field Trigger Common Info for the Basic Delay Trigger variable. When the Reserved field Reserved is 1, it indicates that the time delay trigger frame includes the slave common information trigger field, as shown in fig. 5. That is, when the Reserved field Reserved is 1, the time Delay Trigger frame includes Trigger Dependent Common Info for the Basic Delay Trigger variable. And when the Reserved field Reserved is 0, the time delay trigger frame does not comprise the subordinate public information trigger field.

The format of the subordinate common information trigger field is shown in fig. 6. The subordinate common information trigger field includes a bitmap field bitmap, a content information list content format list, and a padding field padding. Wherein, the bitmap field bitmap is used to indicate whether the content information list carries uplink Data Delay Time UL Data Delay Time. And when the value of the bitmap field is 1, the content information list is shown to carry the uplink Data Delay Time UL Data Delay Time. And when the value of the bitmap field is 0, the content information list does not carry the uplink data delay time.

The bitmap field may correspond to 4 bits. Each bit corresponds to a function. The function indication table of the Bitmap is shown in table three.

Watch III

When the value of the bitmap field is 1, the bitmap field may be 1000, 0100, 0010, or 0001. It shows that the time delay trigger frame includes 1 uplink data delay time and 1 uplink data. When the value of the bitmap field is 1, the bitmap field may also correspond to 1100, 1010, 1001, 0110, 0101, 0011, etc., which indicates that the time delay trigger frame includes 2 delay times and 2 uplink data. The bitmap field may also correspond to 1110, 1111, etc.

As an optional implementation manner, the unit used by the uplink data delay time may be 0.4us, and the value is 0 to 8191. The delay time indicated by the uplink data delay time may be in a range of 0-3276.4 us.

By adopting the method, when trigger time division exists, all the scheduled users of the trigger Frame are scheduled to be 1, 2 and the like time division scheduling resources. All the user time domains follow the indication of the common information domain, and the uplink lengths are the same and are distributed on time and frequency domain resources uniformly. As shown in table three, wherein the corresponding delay times are indicated by the first bit and the second bit, respectively. If there is no delay time, the corresponding bit position is zero. Then, padding is supplemented to be an integral multiple of bytes according to the number of bits after all the final functions.

The first value may be 1, and the second value may be 1. The above values are not specifically limited in this scheme.

402. Analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information;

the scheduling indication information may be a User uplink data transmission indication message including common Info field in Trigger and non-reserved field in User Info field, non-Trigger Dependent common Info, and non-Trigger Dependent User Info information. For example, MCS, NSS, RU Allocation, Length, etc.

403. And after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the uplink data delay time.

In the embodiments of the present application, the uplink data delay time is not limited to one, and may be multiple.

And the time required for analyzing the time delay trigger frame and generating the uplink frame according to the scheduling indication information is less than the uplink data delay time. And the STA sends the uplink frame at the interval of the uplink data delay time after receiving the time delay trigger frame.

As another embodiment, on the basis of the above improvement on the public information domain, the embodiment of the present application further includes an improvement on the user information domain. Wherein, the user information domain includes: user identification indicator (AID 12), frequency domain resource indication Information RU Allocation, UL MCS (uplink coded modulation indication Information), SS Allocation/RA-RU Information (spatial stream indication Information), UL Target RSSI (uplink desired transmit signal power RSSI), Reserved field Reserved, and the like. Wherein the Reserved field is defined to indicate whether the time Delay Trigger frame includes a Dependent User information Trigger field Trigger Dependent User Info for the Basic Delay Trigger variable. When the Reserved field Reserved is set to 1, it indicates that the time delay trigger frame includes a subordinate user information trigger field, as shown in fig. 7. Namely, the time Delay Trigger frame comprises Trigger Dependent User Info for the Basic Delay Trigger variable. And when the Reserved field Reserved is 0, the time delay trigger frame does not comprise the subordinate user information trigger field.

The format of the subordinate user information trigger field may be as shown in fig. 8. The fields triggered by the subordinate user information comprise a bitmap field bitmap, a content information list content format list and a padding field paging, wherein the bitmap field is used for indicating whether the content information list carries uplink data delay time or not. And when the value of the bitmap field is 1, the content information list is shown to carry the delay time of the uplink data. And when the value of the bitmap field is 0, the content information list does not carry the uplink data delay time. The bitmap field may correspond to 4 bits. One for each function. The value of the bitmap field can be as shown in table three above, and is not described here again.

The new user information field provided by the embodiment of the application is used for indicating the user delay scheduling time indicated by the AID 12. The field Trigger Dependent user Info for the Basic Delay Trigger variable triggered by the Dependent user information can support time division scheduling of the same user. For time division scheduling of the same user, the time domain and frequency domain resources scheduled by the user on 2 time division scheduling resources indicated by one user information domain need to be the same. The fields triggered by the subordinate user information can also support time division scheduling of different users. And for different users or time division scheduling of the same AID indicated by different user information fields, wherein the time domain resources are the same, and the frequency domain resources can be set to be the same or different. According to the number of bits after all the functions finally, padding is only required to be integer multiples of bytes.

Based on the new trigger frame, an uplink delay scheduling method provided in the embodiments of the present application includes steps a1-a4, which are specifically as follows:

a1, receiving a time delay trigger frame sent by the AP;

wherein the time delayed trigger frame includes a common information field, the common information field including a first reserved field for indicating whether the time delayed trigger frame includes a field of a subordinate common information trigger; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries first uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the first uplink data delay time;

the time delay trigger frame further comprises a user information field, wherein the user information field comprises a second reserved field which is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate user information or not; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

and when the value of the second bitmap field is not a fourth value, the second content information list does not carry the second uplink data delay time.

A2, analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information;

a3, recording the second uplink data delay time as the first uplink data delay time;

and A4, sending the uplink frame to the AP at the interval of the first uplink data delay time after receiving the time delay trigger frame.

That is, when both the public information field and the user information field carry the uplink data delay time, the delayed transmission may be performed only according to the uplink data delay time carried in the user information field.

Wherein, the steps A3-A4 can be replaced by the following steps:

That is, when the public information field and the user information field both carry uplink data delay time, the delayed transmission can be performed according to the sum of the uplink data delay time carried by the user information field and the public information field.

That is, when the public information field and the user information field both carry the uplink data delay time, the STA may select the delay time according to the setting. Specifically, the uplink frame may be sent with a time delay according to the uplink data delay time carried in the user information field. Alternatively, the uplink frame may be sent with a time delay according to the sum of the uplink data delay time carried in the common information field and the uplink data delay time carried in the user information field. Of course, it can be controlled according to the preset weight of the two times. The specific form is not limited herein.

By adopting the above means, as shown in fig. 9, a schematic view of an uplink delay scheduling scenario provided in the embodiment of the present application is provided. When scheduling a plurality of uplink Data UL Data, control can be performed according to each delay time. Here, the length of each uplink Data UL Data is the same. Each uplink Data UL Data supports multi-user OFDMA or MU MIMO. The users may be the same or different for each uplink Data UL Data. The corresponding time domain resources are the same, and the frequency domain resource indication is variable. The method enables the empty port to construct a TDD format when transmitting, is compatible with a TDD system, and avoids full duplex or uplink and downlink interference. By the embodiment of the application, under the same uplink transmission condition, the PHY frame header can be saved: the overhead of preamble, in the format of 802.11ax He, can save about 60us of time-frequency resources each time one Trigger Frame is saved. As shown in fig. 9, the scheme saves 3 Trigger frames Trigger, and can save time-frequency resources of about 180 us.

On the other hand, the embodiment of the application also provides an uplink delay scheduling method. The time delay trigger frame involved in the method can only improve the user information field userinfo in the prior art.

In this embodiment, the Reserved field in the User information field userinfo is defined as a field indicating whether the time Delay Trigger frame includes the Dependent User information Trigger User Info for the Basic Delay Trigger variable. When the Reserved field Reserved value is 1, it indicates that the time Delay Trigger frame includes a field triggered by the slave User information, that is, there is Trigger Dependent User Info for the Basic Delay Trigger variable. And when the Reserved field Reserved is 0, indicating that the time delay trigger frame does not include the field triggered by the slave user information.

The format of the fields of the subordinate user information trigger is shown in fig. 8. And will not be described in detail herein.

Correspondingly, the time delay trigger frame further includes a common information field common, the common information field common further includes a trigger frame type trigger type, the trigger frame type trigger type is used for indicating the type of the trigger frame, and the trigger frame type trigger type takes on any integer between 8 and 15. As shown in the above table two, the trigger type value is 8, which is not described herein again.

As shown in fig. 10, an embodiment of the present application further provides an uplink delay scheduling method. The method comprises the following steps 1001-1003:

1001. receiving an MAC frame sent by an AP; the MAC frame comprises an HT control field, wherein the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the sixth value, the control ID is used to indicate that the control information carries uplink data delay time;

wherein, the type of the MAC frame may be a data frame. The MAC frame may also be of a type of management frame.

As shown in fig. 11, the MAC frame includes an HT control field HT-control field (HE variable) for indicating whether the MAC frame includes a control field a-control subfield; when the HT control field takes a value of 1, as shown in fig. 12, the control field a-control subfield includes a control list, where as shown in fig. 13, the control list includes a control ID and a control information, and when the control ID takes a specific value, the control ID is used to indicate that the control information carries an uplink data delay time. Wherein, the control ID value can be any integer between 7 and 14. As shown in table four, the control ID may take a value of 13.

Watch four

And when the control ID value is 13, the control ID is used for indicating that the control information carries uplink Data Delay Time UL Data Delay Time. Wherein, the size of the control information may be 13 bits. As an optional implementation manner, the unit used by the uplink data delay time may be 0.4us, and the value is 0 to 8191. The delay time indicated by the uplink data delay time may be in a range of 0-3276.4 us.

1002. Analyzing the MAC frame to obtain the uplink data delay time;

1003. and sending an uplink frame to the AP at an interval of the uplink data delay time after receiving the trigger frame sent by the AP, wherein the uplink frame is obtained by analyzing the trigger frame sent by the AP.

The AP sends a MAC frame and also sends a trigger frame. The trigger frame may be transmitted together with the MAC frame, or the MAC frame and the trigger frame may be transmitted separately in different frames.

And obtaining scheduling indication information by analyzing the trigger frame, and generating an uplink frame according to the scheduling indication information. And then, after receiving the trigger frame, sending the uplink frame at the interval of the uplink data delay time.

According to the STA provided by the embodiment of the application, the Trigger and the uplink data time distance are adjusted by the STA according to the time delay information, and the TA (timing advance) can be adjusted and calculated in the user-level indication by the AP, so that the realization of the STA is simplified. And the STA keeps the last result transmission uplink when not receiving the new adjustment. Such indication of embodiments of the present application may be a dynamic or semi-static configuration. That is, the STA may remain unchanged for a period of time.

In the embodiment of the present application, the STA may also be applicable to a scenario in which there is a downlink service and an uplink service according to the indication in the MAC header of the Data Frame sent. If there is no downlink service, the user has uplink need to send useless data to carry the indication of MAC frame header.

In another aspect, an embodiment of the present application further provides an uplink delay scheduling method. As shown in fig. 14, it includes

steps

1401 and 1403, which are as follows:

1401. receiving a broadcast frame sent by an AP; the broadcast frame comprises a specific provider domain and a content ID, wherein when the content ID is a seventh value, the specific provider domain carries uplink data delay time;

wherein, the STA receives a broadcast frame sent by the AP; as shown in fig. 15, the broadcast frame includes a Specific provider domain, a content ID, and a Specific provider field length, where when the content ID takes a Specific value, the Specific provider domain carries an uplink Data Delay Time UL Data Delay Time; the value of the content ID is not limited herein.

1402. Analyzing the broadcast frame to obtain the uplink data delay time;

1403. and sending an uplink frame to the AP at an interval of the uplink data delay time after receiving the trigger frame sent by the AP, wherein the uplink frame is obtained by analyzing the trigger frame sent by the AP.

The AP sends a broadcast frame and also sends a trigger frame. And obtaining scheduling indication information by analyzing the trigger frame, and generating an uplink frame according to the scheduling indication information. And then, after receiving the trigger frame, sending the uplink frame at the interval of the uplink data delay time.

In the embodiment of the present application, the time indication of the delay scheduling is of a semi-static broadcast type. I.e., by default, the STA requiring access needs the capability to support the semi-static broadcast type described above. The frequency of semi-static adjustment in the scheme only supports Beacon period adjustment. In this embodiment, the uplink Data Frame delay scheduling is added, and no SIFS is separated between the trigger Frame and the uplink Data Frame. the time between the trigger Frame and the uplink Data Frame can be indicated and decided through the time delay information in the Beacon broadcast.

In a long-distance scene, the STA needs to jointly determine the Time between the trigger Frame and the uplink Data Frame according to the TA and the UL Data Delay Time. The detaT is UL Data Delay Time-TA. Wherein, TA is RTT/2, and RTT is round trip delay.

In the embodiment of the application, the STA sets the time of the uplink transmission distance scheduling Trigger according to the field indication in Beacon and the TA adjustment amount of the indication. The STA starts from an access frame according to the broadcast configuration of the AP, comprises an UORA access flow and an uplink scheduled by Trigger, and needs to jointly adjust the time of the uplink transmission distance Trigger according to the delay time indicated by Beacon and the result of TA. The scheme can construct the structures of TDD DUs, DDUs, DDDUs and the like. The scheme only supports scheduling an uplink resource after Trigger.

In the existing mechanism, if an AMPDU (aggregate of MPDUs) is formed by a Trigger Frame and a Data Frame for a certain user, and the Data Frame indicates to respond to a Block Ack (BA) immediately, under the constraint of the current wifi protocol, the Trigger and the uplink Data Frame are separated by SIFS, and the downlink Data Frame and the BA separated by SIFS under an Ack policy are responded immediately, so that the BA and the uplink Data Frame can only be grouped outside the AMPDU, or the uplink Data and the BA are divided and separated in space. The BA is a short control frame, and wastes more time resources in frequency division and space division, because the lengths of different RUs under trigger are kept consistent. For implementation, the BA and the ascending Data Frame set AMPDU are relatively difficult to implement in terms of timing.

Therefore, an embodiment of the present application further provides an uplink delay scheduling method, including steps B1-B5, as follows:

b1, receiving a MAC frame sent by the AP, wherein the MAC frame comprises a time delay trigger frame and a downlink data frame;

the time delay trigger frame comprises a public information field, the public information field comprises a reserved field, and the reserved field is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate public information or not;

when the reserved field takes the value of a first value, the field triggered by the subordinate public information comprises a bitmap field and a content information list, and the bitmap field is used for indicating whether the content information list carries uplink data delay time or not; and when the value of the bitmap field is a second value, the content information list carries the uplink data delay time.

Wherein, the first value can be 1, etc. The second value may be 1 or the like. Reference may be made to the description of the above embodiments, which are not repeated herein.

The time delay trigger frame is any one of the time delay trigger frames described in the foregoing embodiments. That is to say, the time delay trigger frame of this embodiment may further include carrying the uplink data delay time based on the user information field. And is not particularly limited herein.

The downlink data frame includes an HT control field, which may be as shown in fig. 11, and the HT control field is used to indicate whether the MAC frame includes a control field a-control subfield; when the HT control field takes a specific value, such as 1, the control field a-control subfield includes a control list, control, and a padding field, as shown in fig. 12. The control list control includes a control ID and control information control format, as shown in fig. 13.

When the control ID takes a value of a specific value, where the specific value may be any integer value between 7 and 14, and the control ID is used to indicate that the control information control format carries a Short Triggered response scheduled response scheduling (Short TRS).

As shown in table five, when the control ID takes a value of 14, the control information carries a Short Triggered response schedule Short response scheduling (Short TRS). The present solution does not limit the specific value of the control ID. It may take any integer between 7 and 14. The length of the control information may be 1 bit.

Watch five

B2, analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information;

b3, sending the uplink frame to the AP at the interval of the uplink data delay time after receiving the time delay trigger frame;

wherein the method further comprises:

b4, analyzing the downlink data frame to obtain short trigger response scheduling;

b5, transmitting acknowledgement frame ba (block ack) within the uplink data delay time according to the short trigger response scheduling.

Wherein, the sequence of the steps B2-B5 is not limited herein. It may be performed synchronously or in other preset manners.

Fig. 16 is a schematic diagram of an uplink delay scheduling scenario provided in the embodiment of the present application. The method comprises the steps of applying the time delay trigger frame, delaying the time delay trigger frame and a downlink data set AMPDU, wherein the MAC frame header carries a short trigger response scheduling TRS. And the STA replies the BA by using the shorter time domain resource and transmits the uplink Data Frame scheduled by the Trigger by using the longer uplink resource. The Delay duration indicated in Trigger contains the length of BA.

Wherein the indication of BA provides a structure in which short TRS and Trigger can coexist in one AMPDU. The short TRS is carried by a reserved Control ID in the A-Control subfield of the MAC frame header HT-Control field (HE variable). As shown in table five. When the short TRS exists and is 1, it indicates that the frequency domain resource of the BA resource is equal to the uplink resource, the MCS uses a low level MCS0, or the MCS is negotiated before, the MCS of all BAs are kept consistent, and the transmission is performed according to the lowest level of the MCS, and the same BA format is used, so that the time lengths are consistent and the AP can guess.

In this embodiment, a newly added Short TRS (Triggered response scheduling) is added, and after receiving the Short TRS, according to the indication of the Short TRS, the STA uses a fixed MCS0 for negotiation (for example, without negotiation) to send a BA format under the ACK policy on peer-to-peer frequency domain resources.

In this embodiment, in order to implement concurrence of uplink and downlink services, the Trigger Frame and the downlink Data Frame form an AMPDU. The BA occupies less time, and the uplink throughput is improved by at least 5% in a large uplink scene. Compared with Trigger Frame and downlink Data Frame time division transmission, the method keeps the same sum scene of the downlink service rate.

As another implementation manner, an embodiment of the present application further provides an uplink delay scheduling method, including steps C1-C3, which are specifically as follows:

c1, receiving a MAC frame sent by the AP, wherein the MAC frame comprises a trigger frame and a downlink data frame;

the downlink data frame comprises an HT control field, wherein the HT control field is used for indicating whether the MAC frame comprises a control field A-control subfield or not; when the HT control field takes a fifth value, the control field a-control subfield includes a control list control, where the control list control includes a first control ID and a first control information control, and when the first control ID takes a sixth value, the first control ID is used to indicate that the first control information control carries an uplink data delay time; the control list control further includes a second control ID and second control information control, and when the second control ID control takes an eighth value, the second control ID control is used to indicate that the second control information control carries a short trigger response scheduling short TRS; the MAC frame is any one of a data frame and a management frame;

c2, analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain the uplink data delay time and the short trigger response scheduling;

c3, sending the uplink frame to the AP at the interval of the uplink data delay time after receiving the MAC frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

For detailed descriptions of the uplink data delay time and the short trigger response scheduling TRS in the downlink data frame, reference may be made to the foregoing embodiments, and details are not described here again.

As an alternative to this embodiment, wherein the first control ID, the first control information control format, and the second control ID, the second control information control format may be respectively located in different MAC frames. I.e. the uplink data delay time and the short trigger response scheduling may not be in the same MAC frame. That is, the present scheme may be implemented in only one MAC frame, or may be implemented in two MAC frames. And when the two MAC frames are realized, taking the value of the control ID in one MAC frame as a sixth value, wherein the control ID is used for indicating the control information to carry the uplink data delay time. And taking the value of the other MAC intra-frame control ID as an eighth value, wherein the control ID is used for indicating that the control information carries the short trigger response scheduling TRS.

Fig. 17 is a schematic diagram of another uplink delay scheduling scenario provided in the embodiment of the present application. And sending the MAC frame containing the uplink data delay time and a downlink data set AMPDU, wherein the MAC frame header carries a short trigger response scheduling TRS. And the STA replies the BA by using the shorter time domain resource and transmits the uplink Data Frame scheduled by the Trigger by using the longer uplink resource.

As another implementation manner, an embodiment of the present application further provides an uplink delay scheduling method, including steps D1-D4, which are specifically as follows:

d1, receiving a broadcast frame sent by the AP; the broadcast frame comprises a specific provider field, wherein the specific provider field comprises a content ID and a specific provider domain, and when the content IDcontent ID value is a seventh value, the specific provider domain carries uplink data delay time;

d2, receiving a MAC frame sent by the AP, wherein the MAC frame comprises a trigger frame and a downlink data frame, the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field A-control subfield; when the HT control field takes a fifth value, the control field a-control subfield includes a control list control, which includes a control idontrol ID and a control information control format, and when the control idontrol ID takes an eighth value, the control ID is used to indicate that the control information control format carries a short trigger response scheduling short TRS;

d3, analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the broadcast frame to obtain the uplink data delay time; analyzing the downlink data frame to obtain the short trigger response scheduling;

d4, sending the uplink frame to the AP at the interval of the uplink data delay time after receiving the MAC frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.

In the embodiment of the present application, the broadcast frame and the MAC frame are not in the same MAC frame. For detailed descriptions of the uplink data delay time in the broadcast frame and the short trigger response scheduling TRS in the downlink data frame, reference may be made to the foregoing embodiments, and details are not described here again.

Fig. 18 is a schematic diagram of another uplink delay scheduling scenario provided in the embodiment of the present application. Wherein, the broadcast frame carries the delay time of the uplink data. The MAC frame header carries a short trigger response scheduling TRS. And the STA replies the BA by using the shorter time domain resource and transmits the uplink Data Frame scheduled by the Trigger by using the longer uplink resource.

The uplink and downlink concurrency means provided by the embodiments can be widely applied to a coverage distance enhancement type WIFI system, especially, the coverage is required to be 5km, and a single AP can meet the capacity requirement. For example, video return cameras are widely distributed, the service volume of each camera is not high, and the number of users in many scenes of an industrial scene is limited, such as fishing ground monitoring and linear highway monitoring. For a system with requirements on the throughput of an uplink and downlink service concurrency scene, time-frequency resources need to be fully utilized, and the throughput is improved. The same TDD format can be constructed as the TDD system, and full duplex or uplink and downlink interference is avoided.

An embodiment of the present application further provides an uplink delay scheduling system, including:

the sending module is specifically configured to:

or, the sending module is specifically configured to:

For the description of the public information field, reference may be made to fig. 4 to 6, which are not described herein again.

For the introduction of the user information field, reference may be made to fig. 7, which is not described herein again.

a receiving module, configured to receive an MAC frame sent by an AP; the MAC frame comprises an HT control field, wherein the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the sixth value, the control ID is used to indicate that the control information carries uplink data delay time;

the MAC frame is any one of a data frame and a management frame;

The AP sends a MAC frame and also sends a trigger frame. The trigger frame may be transmitted together with the MAC frame, or the MAC frame and the trigger frame may be transmitted separately in different frames. The trigger frame is not limited herein.

According to the scheme, after a time delay trigger frame and a downlink data set AMPDU (amplified multi-path data Unit), a short Trigger Response (TRS) is carried in an MAC frame header. And the STA replies the BA by using the shorter time domain resource and transmits the uplink Data Frame scheduled by the Trigger by using the longer uplink resource. Wherein, the Delay duration indicated in Trigger contains the length of BA.

In this embodiment, the uplink data delay time and the short trigger response scheduling are located in the same MAC frame, and different information is indicated by different values of a plurality of control IDs in the control list.

In this embodiment, the uplink data delay time and the short trigger response scheduling are respectively located in different MAC frames, and different information is indicated according to different values of the control ID.

According to the embodiment of the application, the broadcast frame carries the uplink data delay time, and the downlink data frame in the MAC frame carries the short trigger response scheduling short TRS indication. Wherein, the MAC frame header carries a short trigger response scheduling TRS. And the STA replies the BA by using the shorter time domain resource and transmits the uplink Data Frame scheduled by the Trigger by using the longer uplink resource.

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and the computer program is executed by a processor to implement the method.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module.

The integrated units, if implemented in the form of software program modules and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a read-only memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and the like.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash memory disks, read-only memory, random access memory, magnetic or optical disks, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

An uplink delay scheduling method, comprising:

receiving a time delay trigger frame sent by an AP; wherein the time delayed trigger frame includes a common information field, the common information field including a first reserved field for indicating whether the time delayed trigger frame includes a field of a subordinate common information trigger; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries first uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the first uplink data delay time;

analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information;

and after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time.
The method of claim 1,

the public information field further comprises a trigger frame type, wherein the trigger frame type is used for indicating the type of the trigger frame, and the value of the trigger frame type is any integer between 8 and 15.
The method of claim 1 or 2, wherein the time delayed trigger frame further comprises a user information field, wherein the user information field comprises a second reserved field, and wherein the second reserved field is used for indicating whether the time delayed trigger frame comprises a field triggered by subordinate user information; when the value of the second reserved field is a third value, the field triggered by the subordinate user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

the sending the uplink frame to the AP at the interval of the first uplink data delay time after receiving the time delay trigger frame specifically includes:

recording the second uplink data delay time as the first uplink data delay time;

after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time;

or, the sending the uplink frame to the AP at the interval of the first uplink data delay time after receiving the time delay trigger frame specifically includes:

acquiring the sum of the first uplink data delay time and the second uplink data delay time, and recording the sum of the first uplink data delay time and the second uplink data delay time as the first uplink data delay time;

and after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time.
An uplink delay scheduling method, comprising:

receiving a time delay trigger frame sent by an AP; the time delayed trigger frame includes a user information field including a second reserved field for indicating whether the time delayed trigger frame includes a field of a dependent user information trigger; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information;

and after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the second uplink data delay time.
The method of claim 4,

the time delay trigger frame further comprises a public information field, the public information field further comprises a trigger frame type, the trigger frame type is used for indicating the type of the trigger frame, and the value of the trigger frame type is any integer between 8 and 15.
An uplink delay scheduling method, comprising:

receiving an MAC frame sent by an AP; the MAC frame comprises an HT control field, wherein the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the sixth value, the control ID is used to indicate that the control information carries uplink data delay time; the MAC frame is any one of a data frame and a management frame;

analyzing the MAC frame to obtain the uplink data delay time;

and sending an uplink frame to the AP at an interval of the uplink data delay time after receiving the trigger frame sent by the AP, wherein the uplink frame is obtained by analyzing the trigger frame sent by the AP.
An uplink delay scheduling method, comprising:

receiving a broadcast frame sent by an AP; the broadcast frame comprises a specific provider domain and a content ID, wherein when the value of the content ID is a seventh value, the specific provider domain carries uplink data delay time;

analyzing the broadcast frame to obtain the uplink data delay time;

and sending an uplink frame to the AP at an interval of the uplink data delay time after receiving the trigger frame sent by the AP, wherein the uplink frame is obtained by analyzing the trigger frame sent by the AP.
An uplink delay scheduling method, comprising:

receiving an MAC frame sent by an AP, wherein the MAC frame comprises a time delay trigger frame and a downlink data frame;

the time delay trigger frame comprises a public information field, the public information field comprises a first reserved field, and the first reserved field is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate public information or not; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the uplink data delay time;

the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the eighth value, the control ID is used to indicate that the control information carries short trigger response scheduling;

analyzing the time delay trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain short trigger response scheduling;

after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the uplink data delay time; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
An uplink delay scheduling method, comprising:

receiving an MAC frame sent by an AP, wherein the MAC frame comprises a trigger frame and a downlink data frame;

the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes a fifth value, the control field includes a control list, the control list includes a first control ID and first control information, and when the first control ID takes a sixth value, the first control ID is used to indicate that the first control information carries uplink data delay time; the control list further comprises a second control ID and second control information, and when the value of the second control ID is an eighth value, the second control ID is used for indicating that the second control information carries short trigger response scheduling; the MAC frame is any one of a data frame and a management frame;

analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain the uplink data delay time and the short trigger response scheduling;

after receiving the MAC frame, sending the uplink frame to the AP at the interval of the uplink data delay time; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
An uplink delay scheduling method, comprising:

receiving a first MAC frame and a second MAC frame sent by an AP, wherein the first MAC frame comprises a first downlink data frame; the second MAC frame comprises a trigger frame and a second downlink data frame;

the first downlink data frame comprises a first HT control field, and the first HT control field is used for indicating whether the first MAC frame comprises a first control field or not; when the first HT control field takes a value of a fifth value, the first control field includes a first control list, the first control list includes a first control ID and first control information, and when the first control ID takes a value of a sixth value, the first control ID is used to indicate that the first control information carries uplink data delay time;

the second downlink data frame includes a second HT control field for indicating whether the second MAC frame includes a second control field; when the second HT control field takes a value of a fifth value, the second control field includes a second control list, the second control list includes a second control ID and second control information, and when the second control ID takes a value of an eighth value, the second control ID is used to indicate that the second control information carries a short trigger response schedule;

the first MAC frame and the second MAC frame are any one of a data frame and a management frame respectively;

analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the first downlink data frame to obtain the uplink data delay time, and analyzing the second downlink data frame to obtain the short trigger response scheduling;

after receiving the second MAC frame, sending the uplink frame to the AP at the interval of the uplink data delay time; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
An uplink delay scheduling method, comprising:

receiving a broadcast frame sent by an AP; the broadcast frame comprises a specific provider field, the specific provider field comprises a content ID and a specific provider domain, and when the content ID takes a value as a seventh value, the specific provider domain carries uplink data delay time;

receiving a MAC frame sent by an AP, wherein the MAC frame comprises a trigger frame and a downlink data frame, the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the eighth value, the control ID is used to indicate that the control information carries short trigger response scheduling;

analyzing the trigger frame to obtain scheduling indication information, and generating an uplink frame according to the scheduling indication information; analyzing the broadcast frame to obtain the uplink data delay time; analyzing the downlink data frame to obtain the short trigger response scheduling;

after receiving the MAC frame, sending the uplink frame to the AP at the interval of the uplink data delay time; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
An uplink delay scheduling system, comprising:

a receiving module, configured to receive a time delay trigger frame sent by an AP; wherein the time delayed trigger frame includes a common information field, the common information field including a first reserved field for indicating whether the time delayed trigger frame includes a field of a subordinate common information trigger; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries first uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the first uplink data delay time;

the processing module is used for analyzing the time delay trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information;

and a sending module, configured to send the uplink frame to the AP at an interval of the first uplink data delay time after receiving the time delay trigger frame.
The system of claim 12,

the public information field further comprises a trigger frame type, wherein the trigger frame type is used for indicating the type of the trigger frame, and the value of the trigger frame type is any integer between 8 and 15.
The system according to claim 12 or 13, wherein the time delay trigger frame further comprises a user information field, the user information field comprising a second reserved field for indicating whether the time delay trigger frame comprises a field of a subordinate user information trigger; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

the sending module is specifically configured to:

recording the second uplink data delay time as the first uplink data delay time;

after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time;

or, the sending module is specifically configured to:

acquiring the sum of the first uplink data delay time and the second uplink data delay time, and recording the sum of the first uplink data delay time and the second uplink data delay time as the first uplink data delay time;

and after receiving the time delay trigger frame, sending the uplink frame to the AP at the interval of the first uplink data delay time.
An uplink delay scheduling system, comprising:

a receiving module, configured to receive a time delay trigger frame sent by an AP; the time delay trigger frame comprises a user information field, the user information field comprises a second reserved field, and the second reserved field is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate user information; when the second reserved field takes a value of a third value, the field triggered by the slave user information comprises a second bitmap field and a second content information list, and the second bitmap field is used for indicating whether the second content information list carries second uplink data delay time or not; when the value of the second bitmap field is a fourth value, the second content information list carries the second uplink data delay time;

the processing module is used for analyzing the time delay trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information;

and a sending module, configured to send the uplink frame to the AP at an interval of the second uplink data delay time after receiving the time delay trigger frame.
The system of claim 15,

the time delay trigger frame further comprises a public information field, the public information field further comprises a trigger frame type, the trigger frame type is used for indicating the type of the trigger frame, and the value of the trigger frame type is any integer between 8 and 15.
An uplink delay scheduling system, comprising:

a receiving module, configured to receive an MAC frame sent by an AP; the MAC frame comprises an HT control field, wherein the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the sixth value, the control ID is used to indicate that the control information carries uplink data delay time; the MAC frame is any one of a data frame and a management frame;

the processing module is used for analyzing the MAC frame to obtain the uplink data delay time;

and a sending module, configured to send an uplink frame to the AP at an interval of the uplink data delay time after receiving a trigger frame sent by the AP, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.
An uplink delay scheduling system, comprising:

a receiving module, configured to receive a broadcast frame sent by an AP; the broadcast frame comprises a specific provider domain and a content ID, wherein when the value of the content ID is a seventh value, the specific provider domain carries uplink data delay time;

the processing module is used for analyzing the broadcast frame to obtain the uplink data delay time;

and a sending module, configured to send an uplink frame to the AP at an interval of the uplink data delay time after receiving a trigger frame sent by the AP, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.
An uplink delay scheduling system, comprising:

the receiving module is used for receiving an MAC frame sent by the AP, wherein the MAC frame comprises a time delay trigger frame and a downlink data frame;

the time delay trigger frame comprises a public information field, the public information field comprises a first reserved field, and the first reserved field is used for indicating whether the time delay trigger frame comprises a field triggered by subordinate public information or not; when the value of the first reserved field is a first value, the field triggered by the subordinate public information comprises a first bitmap field and a first content information list, and the first bitmap field is used for indicating whether the first content information list carries uplink data delay time or not; when the value of the first bitmap field is a second value, the first content information list carries the uplink data delay time;

the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of the fifth value, the control field includes a control list, the control list includes a control ID and control information, and when the control ID takes the value of the eighth value, the control ID is used to indicate that the control information carries short trigger response scheduling;

the processing module is used for analyzing the time delay trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain short trigger response scheduling;

a sending module, configured to send the uplink frame to the AP at an interval of the uplink data delay time after receiving the time delay trigger frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
An uplink delay scheduling system, comprising:

the receiving module is used for receiving an MAC frame sent by the AP, wherein the MAC frame comprises a trigger frame and a downlink data frame;

the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes a fifth value, the control field includes a control list, the control list includes a first control ID and first control information, and when the first control ID takes a sixth value, the first control ID is used to indicate that the first control information carries uplink data delay time; the control list further comprises a second control ID and second control information, and when the value of the second control ID is an eighth value, the second control ID is used for indicating that the second control information carries short trigger response scheduling; the MAC frame is any one of a data frame and a management frame;

the processing module is used for analyzing the trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the downlink data frame to obtain the uplink data delay time and the short trigger response scheduling;

a sending module, configured to send the uplink frame to the AP at an interval of the uplink data delay time after receiving the MAC frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
An uplink delay scheduling system, comprising:

the receiving module is used for receiving a first MAC frame and a second MAC frame sent by an AP, wherein the first MAC frame comprises a first downlink data frame; the second MAC frame comprises a trigger frame and a second downlink data frame;

the first downlink data frame comprises a first HT control field, and the first HT control field is used for indicating whether the first MAC frame comprises a first control field or not; when the first HT control field takes a value of a fifth value, the first control field includes a first control list, the first control list includes a first control ID and first control information, and when the first control ID takes a value of a sixth value, the first control ID is used to indicate that the first control information carries uplink data delay time;

the second downlink data frame includes a second HT control field for indicating whether the second MAC frame includes a second control field; when the second HT control field takes a value of a fifth value, the second control field includes a second control list, the second control list includes a second control ID and second control information, and when the second control ID takes a value of an eighth value, the second control ID is used to indicate that the second control information carries a short trigger response schedule;

the first MAC frame and the second MAC frame are any one of a data frame and a management frame respectively;

the processing module is used for analyzing the trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the first downlink data frame to obtain the uplink data delay time, and analyzing the second downlink data frame to obtain the short trigger response scheduling;

a sending module, configured to send the uplink frame to the AP at an interval of the uplink data delay time after receiving the second MAC frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
An uplink delay scheduling system, comprising:

a receiving module, configured to receive a broadcast frame sent by an AP; the broadcast frame comprises a specific provider field, the specific provider field comprises a content ID and a specific provider domain, and when the content ID takes a value as a seventh value, the specific provider domain carries uplink data delay time;

receiving a MAC frame sent by an AP, wherein the MAC frame comprises a trigger frame and a downlink data frame, the downlink data frame comprises an HT control field, and the HT control field is used for indicating whether the MAC frame comprises a control field or not; when the HT control field takes the value of a fifth value, the control field comprises a control list, the control list comprises a control ID and control information, and when the control ID takes the value of an eighth value, the control ID is used for indicating that the control information carries short trigger response scheduling;

the processing module is used for analyzing the trigger frame to obtain scheduling indication information and generating an uplink frame according to the scheduling indication information; analyzing the broadcast frame to obtain the uplink data delay time; analyzing the downlink data frame to obtain the short trigger response scheduling;

a sending module, configured to send the uplink frame to the AP at an interval of the uplink data delay time after receiving the MAC frame; and sending an acknowledgement frame within the uplink data delay time according to the short trigger response scheduling.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which is executed by a processor to implement the method of any one of claims 1 to 11.