WO2021134630A1 - Procédé et système de planification de retard de liaison montante et support de stockage - Google Patents

Procédé et système de planification de retard de liaison montante et support de stockage Download PDF

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Publication number
WO2021134630A1
WO2021134630A1 PCT/CN2019/130842 CN2019130842W WO2021134630A1 WO 2021134630 A1 WO2021134630 A1 WO 2021134630A1 CN 2019130842 W CN2019130842 W CN 2019130842W WO 2021134630 A1 WO2021134630 A1 WO 2021134630A1
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frame
control
field
uplink
uplink data
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PCT/CN2019/130842
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English (en)
Chinese (zh)
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冯玺宝
吴毅凌
李铮
庄亮
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华为技术有限公司
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Priority to PCT/CN2019/130842 priority Critical patent/WO2021134630A1/fr
Priority to CN201980103223.1A priority patent/CN114846834A/zh
Publication of WO2021134630A1 publication Critical patent/WO2021134630A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • This application relates to the field of communication technology, and in particular to an uplink delay scheduling method, system and storage medium.
  • the new generation of Wireless Fidelitywifi wireless fidelity technology wifi6 newly published standard protocol IEEE P802.11axTM/D4.2 adds uplink scheduling features. It adds a new trigger frame, which can instruct multiple STAs to pass MU-MIMO (Multi-User Multiple-Input Multiple-Output), OFDMA (Orthogonal Frequency Division)
  • the Multiple Access method achieves simultaneous transmission of uplink data.
  • the trigger Frame includes indication information required by the STA to send uplink data, such as MCS (modulation and coding scheme), NSS (number of spatial streams), length, RU (resource unit) indication, etc. Among them, after receiving the trigger Frame, the STA needs to send uplink data of the indicated length within 16 us according to the scheduling instruction information.
  • the system using the 802.11ax protocol when used for long-distance coverage scenarios, such as a small number of cameras in the video backhaul service, the cameras are scattered in the range of 3km or even 5km. It needs to use multiple AP devices to complete 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 is required to make better uplink multiplexing and make full use of time-frequency resources.
  • the STA is required to indicate the short inter-frame interval after receiving the trigger frame according to the AP's indication SIFS completes uplink data transmission, and there must be a trigger before each uplink data frame; and the timing of Trigger and uplink data UL Data does not support the uplink alignment according to the way of aligning the farthest coverage.
  • the embodiments of the present application provide an uplink delay scheduling method, system, and storage medium, which can realize uplink data alignment.
  • the first aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate the time delay trigger frame Whether the field triggered by the dependent public information is included; when the first reserved field takes the first value, the field triggered by the dependent public information includes a first bitmap field and a first content information list, and the first The bitmap field is used to indicate whether the first content information list carries the first uplink data delay time; when the first bitmap field takes the second value, the first content information list carries the first Uplink data delay time;
  • the embodiment of the present application redefines the above-mentioned common information domain Common Info to indicate that all users in the trigger are scheduled according to the delay indication time according to the delay time in the common information domain. All users in the time domain follow the instructions of the public information domain, and the uplink length is the same, and the distribution of time and frequency domain resources is consistent.
  • the multi-user uplink transmission time alignment indication under long-distance coverage can be realized, and furthermore, the time division of Trigger multiple users can be realized.
  • the common information field further includes a trigger frame type
  • the trigger frame type is used to indicate the type of the trigger frame
  • the value of the trigger frame type is any integer between 8 and 15.
  • the time delay trigger frame further includes a user information field, 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 dependent user information
  • the field triggered by the subordinate user information includes a second bitmap field and a second content information list, and the second bitmap field is used to indicate the Whether the second content information list carries the second uplink data delay time; when the second bitmap field takes the fourth value, the second content information list carries the second uplink data delay time;
  • the sending the uplink frame to the AP at intervals of the first uplink data delay time after receiving the time delay trigger frame specifically includes:
  • the sending the uplink frame to the AP at intervals of the first uplink data delay time after receiving the time delay trigger frame specifically includes:
  • the second aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • the time delay trigger frame includes a user information field, 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 subordinate user information includes a second bitmap field and a second content information list, and the second bitmap The field is used to indicate whether the second content information list carries the second uplink data delay time; when the second bitmap field takes the fourth value, the second content information list carries the second uplink data delay;
  • the new user information field provided in the embodiment of the present application is used to indicate the user delay scheduling time indicated by AID12.
  • the Trigger Dependent user Info for the Basic Delay Trigger variant triggered by the above-mentioned dependent user information can support time division scheduling of the same user.
  • the fields triggered by the above subordinate user information can also support time division scheduling of different users.
  • the time delay trigger frame further includes a public information field, and the public information field further includes a trigger frame type, and the trigger frame type is used to indicate the type of the trigger frame, wherein the trigger frame type has a value of 8 to Any integer between 15.
  • the third aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • the MAC frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes the fifth value, the control The field includes a control list, and the control list includes a control ID and control information. When the control ID takes the sixth value, the control ID is used to indicate that the control information carries the uplink data delay time; wherein, the The MAC frame is either a data frame or a management frame;
  • the uplink frame After receiving the trigger frame sent by the AP, the uplink frame is sent to the AP at intervals of the uplink data delay time, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.
  • the fourth aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • the broadcast frame includes a specific provider domain and a content ID, where, when the content ID takes the seventh value, the specific provider domain carries an uplink data delay time;
  • the uplink frame After receiving the trigger frame sent by the AP, the uplink frame is sent to the AP at intervals of the uplink data delay time, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.
  • the time indication for delayed scheduling is of a semi-static broadcast type. That is, the STA that requires access by default needs to support the ability of the above-mentioned semi-static broadcast type.
  • the frequency of semi-static adjustment in this scheme only supports Beacon period adjustment.
  • the fifth aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • the MAC frame includes a time delay trigger frame and a downlink data frame
  • the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate whether the time delay trigger frame includes a field triggered by a dependent public information;
  • the field triggered by the subordinate public information includes a first bitmap field and a first content information list, and the first bitmap field is used to indicate the first content Whether the information list carries the uplink data delay time;
  • the first bitmap field takes the second value, the first content information list carries the uplink data delay time;
  • the downlink data frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes a value of the fifth value, the control field includes a control list, so The control list includes a control ID and control information, and when the control ID takes an eighth value, the control ID is used to indicate that the control information carries a short trigger response schedule;
  • Parse the time delay trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the downlink data frame to obtain a short trigger response schedule;
  • the uplink frame After receiving the time delay trigger frame, the uplink frame is sent to the AP at intervals of the uplink data delay time; and the confirmation frame is sent within the uplink data delay time according to the short trigger response schedule.
  • the sixth aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • the MAC frame includes a trigger frame and a downlink data frame
  • the downlink data frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes a value of the fifth value, the control field includes a control list, so The 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 an uplink data delay time; The control list further includes a second control ID and second control information. When the second control ID takes an eighth value, the second control ID is used to indicate that the second control information carries a short trigger response Scheduling; wherein, the MAC frame is any one of a data frame and a management frame;
  • Parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the downlink data frame to obtain the uplink data delay time and the short trigger response scheduling;
  • the uplink frame After receiving the MAC frame, the uplink frame is sent to the AP at intervals of the uplink data delay time; and an acknowledgement frame is sent within the uplink data delay time according to the short trigger response scheduling.
  • the seventh aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • first MAC frame includes a first downlink data frame
  • second MAC frame includes a trigger frame and a second downlink data frame
  • the first downlink data frame includes a first HT control field, and the first HT control field is used to indicate whether the first MAC frame includes a first control field; when the value of the first HT control field is the first When the value is five, the first control field includes a first control list, and the first control list includes a first control ID and first control information. When the first control ID takes the sixth value, the The first control ID is used to indicate that the first control information carries the uplink data delay time;
  • the second downlink data frame includes a second HT control field, and the second HT control field is used to indicate whether the second MAC frame includes a second control field; when the value of the second HT control field is fifth Value, the second control field includes a second control list, the second control list includes a second control ID and second control information, when the second control ID takes the eighth value, the first 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 respectively any one of a data frame and a management frame
  • the trigger frame is parsed to obtain scheduling indication information, and an uplink frame is generated according to the scheduling indication information; and the first downlink data frame is parsed to obtain the uplink data delay time, and the second downlink data frame is parsed to obtain the Short trigger response scheduling;
  • the uplink frame After receiving the second MAC frame, the uplink frame is sent to the AP at intervals of the uplink data delay time; and the confirmation frame is sent within the uplink data delay time according to the short trigger response scheduling.
  • the eighth aspect of the embodiments of the present application provides an uplink delay scheduling method, including:
  • the broadcast frame includes a specific vendor field, the specific vendor field includes a content ID and a specific vendor field, and when the content ID takes the seventh value, the specific vendor
  • the commercial domain carries the uplink data delay time
  • the MAC frame includes a trigger frame and a downlink data frame
  • the downlink data frame includes an HT control field
  • the HT control field is used to indicate whether the MAC frame includes a control field; when the HT
  • the control field includes a control list
  • the control list includes a control ID and control information.
  • the control ID is used to indicate all
  • the control information carries short trigger response scheduling;
  • Parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; parse the broadcast frame to obtain the uplink data delay time; parse the downlink data frame to obtain the short trigger response schedule;
  • the uplink frame After receiving the MAC frame, the uplink frame is sent to the AP at intervals of the uplink data delay time; and an acknowledgement frame is sent within the uplink data delay time according to the short trigger response scheduling.
  • the ninth aspect of the embodiments of the present application provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive the time delay trigger frame sent by the AP; wherein the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate all Whether the time delay trigger frame includes a field triggered by the subordinate public information; when the first reserved field takes the first value, the field triggered by the subordinate common information includes a first bitmap field and a first content information list , The first bitmap field is used to indicate whether the first content information list carries the first uplink data delay time; when the first bitmap field takes the second value, the first content information list Carrying the first uplink data delay time;
  • a processing module configured to parse the time delay trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information
  • the sending module is configured to send the uplink frame to the AP at intervals of the first uplink data delay time after receiving the time delay trigger frame.
  • the time delay trigger frame further includes a user information field, 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 subordinate user information trigger Field; when the second reserved field takes the third value, the field triggered by the subordinate user information includes a second bitmap field and a second content information list, and the second bitmap field is used to indicate all Whether the second content information list carries the second uplink data delay time; when the second bitmap field has a value of the fourth value, the second content information list carries the second uplink data delay time;
  • the sending module is specifically used for:
  • the sending module is specifically used for:
  • a tenth aspect of the embodiments of the present application provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive a time delay trigger frame sent by the AP; the time delay trigger frame includes a user information field, the user information field includes a second reserved field, and the second reserved field is used to indicate the time Whether the delayed trigger frame includes a field triggered by subordinate user information; when the second reserved field takes a value of the third value, the field triggered by the subordinate user information includes a second bitmap field and a second content information list, so The second bitmap field is used to indicate whether the second content information list carries the second uplink data delay time; when the second bitmap field takes the fourth value, the second content information list carries all The second uplink data delay time;
  • a processing module configured to parse the time delay trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information
  • the sending module is configured to send the uplink frame to the AP at intervals of the second uplink data delay time after receiving the time delay trigger frame.
  • the eleventh aspect of the embodiments of the present application provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive the MAC frame sent by the AP; the MAC frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes the fifth value When the control field includes a control list, the control list includes a control ID and control information. When the control ID takes the sixth value, the control ID is used to indicate that the control information carries the uplink data delay time. ;
  • the MAC frame is any one of a data frame and a management frame;
  • a processing module configured to parse the MAC frame to obtain the uplink data delay time
  • the sending module is configured to send an uplink frame to the AP at intervals of the uplink data delay time after receiving the 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 embodiments of the present application provides an uplink delay scheduling system, including:
  • the receiving module is used to receive the broadcast frame sent by the AP;
  • the broadcast frame includes a specific provider domain and a content ID, where, when the content ID takes the seventh value, the specific provider domain carries the uplink data delay time ;
  • a processing module configured to parse the broadcast frame to obtain the uplink data delay time
  • the sending module is configured to send an uplink frame to the AP at intervals of the uplink data delay time after receiving the trigger frame sent by the AP, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.
  • the thirteenth aspect of the embodiments of the present application provides an uplink delay scheduling system, including:
  • a receiving module configured to receive a MAC frame sent by an AP, where the MAC frame includes a time delay trigger frame and a downlink data frame;
  • the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate whether the time delay trigger frame includes a field triggered by a dependent public information;
  • the field triggered by the subordinate public information includes a first bitmap field and a first content information list, and the first bitmap field is used to indicate the first content Whether the information list carries the uplink data delay time;
  • the first bitmap field takes the second value, the first content information list carries the uplink data delay time;
  • the downlink data frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes a value of the fifth value, the control field includes a control list, so The control list includes a control ID and control information, and when the control ID takes an eighth value, the control ID is used to indicate that the control information carries a short trigger response schedule;
  • a processing module configured to parse the time delay trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the downlink data frame to obtain a short trigger response schedule;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the time delay trigger frame; and according to the short trigger response scheduling to send an acknowledgment within the uplink data delay time frame.
  • a fourteenth aspect of the embodiments of the present application provides an uplink delay scheduling system, including:
  • a receiving module configured to receive a MAC frame sent by an AP, where the MAC frame includes a trigger frame and a downlink data frame;
  • the downlink data frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes a value of the fifth value, the control field includes a control list, so The 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 an uplink data delay time; The control list further includes a second control ID and second control information. When the second control ID takes an eighth value, the second control ID is used to indicate that the second control information carries a short trigger response Scheduling; wherein, the MAC frame is any one of a data frame and a management frame;
  • a processing module configured to parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the downlink data frame to obtain the uplink data delay time and the short trigger response schedule;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the MAC frame; and according to the short trigger response scheduling to send an acknowledgement frame within the uplink data delay time.
  • an uplink delay scheduling system including:
  • a receiving module configured to receive a first MAC frame and a second MAC frame sent by an AP, where the first MAC frame includes a first downlink data frame; the second MAC frame includes a trigger frame and a second downlink data frame;
  • the first downlink data frame includes a first HT control field, and the first HT control field is used to indicate whether the first MAC frame includes a first control field; when the value of the first HT control field is the first When the value is five, the first control field includes a first control list, and the first control list includes a first control ID and first control information. When the first control ID takes the sixth value, the The first control ID is used to indicate that the first control information carries the uplink data delay time;
  • the second downlink data frame includes a second HT control field, and the second HT control field is used to indicate whether the second MAC frame includes a second control field; when the value of the second HT control field is fifth Value, the second control field includes a second control list, the second control list includes a second control ID and second control information, when the second control ID takes the eighth value, the first 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 respectively any one of a data frame and a management frame
  • the processing module is configured to parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the first downlink data frame to obtain the uplink data delay time, and parse the second downlink The data frame obtains the short trigger response schedule;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the second MAC frame; and send an acknowledgement within the uplink data delay time according to the short trigger response schedule frame.
  • the sixteenth aspect of the embodiments of the present application provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive a broadcast frame sent by the AP;
  • the broadcast frame includes a specific vendor field, and the specific vendor field includes a content ID and a specific vendor field, where the content ID takes the seventh value ,
  • the specific provider domain carries the uplink data delay time;
  • the MAC frame includes a trigger frame and a downlink data frame
  • the downlink data frame includes an HT control field
  • the HT control field is used to indicate whether the MAC frame includes a control field; when the HT
  • the control field includes a control list
  • the control list includes a control ID and control information.
  • the control ID is used to indicate all
  • the control information carries short trigger response scheduling;
  • the processing module is configured to parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; parse the broadcast frame to obtain the uplink data delay time; parse the downlink data frame to obtain the short Trigger response scheduling;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the MAC frame; and according to the short trigger response scheduling to send an acknowledgement frame within the uplink data delay time.
  • the seventeenth aspect of the embodiments of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method.
  • Figure 1 is a partial schematic diagram of a trigger Frame format in the standard protocol 802.11ax;
  • Figure 2 is a schematic diagram of some fields included in the common information field commoninfo in a trigger frame in the standard protocol 802.11ax;
  • Figure 3 is a schematic diagram of some fields included in the user information field userinfo in a trigger frame in the standard protocol 802.11ax;
  • FIG. 5 is a schematic diagram of a part of the structure of a public information domain provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of the format of a subordinate public information trigger field provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of a partial structure of a user information domain provided by an embodiment of this application.
  • FIG. 8 is a schematic diagram of a format of a subordinate user information trigger field provided by an embodiment of this application.
  • FIG. 9 is a schematic diagram of an uplink delay scheduling scenario provided by an embodiment of the application.
  • FIG. 10 is a schematic flowchart of an uplink delay scheduling method provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of a MAC frame provided by an embodiment of the application.
  • FIG. 12 is a schematic diagram of a field structure of an A-control subfield in a MAC frame provided by an embodiment of the application;
  • FIG. 13 is a schematic diagram of the field structure of a control list in a MAC frame provided by an embodiment of this application;
  • FIG. 14 is a schematic flowchart of an uplink delay scheduling method provided by an embodiment of this application.
  • FIG. 15 is a schematic structural diagram of a broadcast frame provided by an embodiment of this application.
  • FIG. 16 is a schematic diagram of an uplink delay scheduling scenario provided by an embodiment of the application.
  • FIG. 17 is a schematic diagram of another uplink delay scheduling scenario provided by an embodiment of the application.
  • FIG. 18 is a schematic diagram of another uplink delay scheduling scenario provided by an embodiment of the application.
  • FIG. 1 it is a partial schematic diagram of the trigger Frame format in the latest standard protocol 802.11ax published by wifi6.
  • the trigger frame includes the control frame framecontrol, duration, RA (receiving STA address), TA (transmitting STA address), common information field commoninfo, user information field userinfolist, padding field and frame check sequence FCS (frame check sequence) .
  • Table 1 is the trigger frame type field coding table.
  • 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
  • the trigger type for scheduling uplink data is the Basic type.
  • the corresponding trigger type is the Basic type.
  • some of the fields included in the common information domain commoninfo are shown in Figure 2. It includes: trigger type, 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 (Multi-User MIMO mode LTF mode), Number Of HE-LTF Symbols And Midamble Period (pilot encryption period and HE-LTF symbol number), UL STBC (uplink space-time- block-coding), UL Spatial Reuse (uplink spatial stream use), Doppler (high-speed time domain pilot insertion indication), and reserved field Reserved.
  • FIG. 3 is a schematic diagram of some fields included in the user information domain userinfo. It includes: user identification indication (association identifier, AID12), frequency domain resource indication information RU Allocation, UL MCS (uplink coding and modulation indication information), SS Allocation/RA-RU Information (spatial flow indication information), UL Target RSSI (uplink Expected signal power RSSI: receive signal strength indicator) and reserved field reserved, etc.
  • user identification indication association identifier, AID12
  • frequency domain resource indication information RU Allocation UL MCS (uplink coding and modulation indication information)
  • SS Allocation/RA-RU Information spatial flow indication information
  • UL Target RSSI uplink Expected signal power RSSI: receive signal strength indicator
  • reserved field reserved etc.
  • the STA after receiving the MAC frame of the control type sent by the AP, the STA obtains scheduling indication information by parsing the MAC frame, and then generates an uplink frame according to the scheduling indication information, and after the SIFS time, the air interface send.
  • the foregoing scheduling indication information may include: MCS, NSS, RU Allocation, Length, and so on.
  • the foregoing scheduling indication information may indicate that one trigger frame is scheduled to schedule one user, and its user information field user Info List contains only one user's information. It can accomplish multi-user scheduling through multiplexing of MU MIMO or OFDMA.
  • the foregoing scheduling indication information may also indicate that multiple users are scheduled through one trigger frame. That is, all users share the same Common Info field, and can include multiple user information fields to construct a frame to indicate uplink scheduling for multiple users.
  • the STA for the scheduled uplink data transmission, it only supports the indication of frequency domain and space domain resources, and does not support the indication description of time domain information.
  • the STA is required to indicate the short inter-frame interval after receiving the trigger frame according to the AP's indication SIFS completes uplink data transmission, and there must be a trigger before each uplink data frame; and the timing of Trigger and uplink data UL Data does not support the uplink alignment according to the way of aligning the farthest coverage.
  • this solution provides an uplink delay scheduling method.
  • the STA sends the uplink data after receiving the short interframe space (SIFS) after receiving the trigger frame and the indicated time according to the AP's instruction. Through the time indication information, the multi-user uplink transmission under one trigger frame can be completed, and then the multi-user uplink transmission time alignment indication under the long-distance coverage can be realized, and the Trigger multi-user time division can also be realized.
  • SIFS short interframe space
  • an embodiment of the present application provides an uplink delay scheduling method. It includes steps 401-403, which are specifically as follows:
  • 401. Receive a time delay trigger frame sent by an AP; where the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate the time delay Whether the trigger frame includes a field triggered by the subordinate public information; when the first reserved field takes a value of the first value, the field triggered by the subordinate common information includes a first bitmap field and a first content information list.
  • the first bitmap field is used to indicate whether the first content information list carries the uplink data delay time; when the first bitmap field takes the second value, the first content information list carries the uplink data delay;
  • the above-mentioned time delay trigger frame is a new type of trigger frame. As shown in Table 2.
  • 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
  • triggertype when the triggertype value is 8, it corresponds to the Basic Delay type, which is the time delay trigger frame Basic Delaytrigger.
  • the value of triggertype is not limited here, and it can also be any integer value of 9, 10, 11, 12, 13, 14 or 15.
  • its common information domain commoninfo includes: triggertype, UL Length (the length of the scheduled uplink data), UL BW (the bandwidth of the TB PPDU indicated in HE-SIG-A), GI and LTF Type (Guard interval and HE-LTF type indication), MU-MIMO LTF Mode (Multi-User MIMO mode LTF mode), Number Of HE-LTF Symbols And Midamble Period (pilot encryption period and number of HE-LTF symbols ), UL STBC (uplink space-time-block-coding), UL Spatial Reuse (uplink spatial stream use), Doppler (high-speed time domain pilot insertion indication), and reserved field Reserved.
  • triggertype the length of the scheduled uplink data
  • UL BW the bandwidth of the TB PPDU indicated in HE-SIG-A
  • GI and LTF Type Guard interval and HE-LTF type indication
  • MU-MIMO LTF Mode Multi-User MIMO mode LTF mode
  • the difference from the prior art is that this embodiment redefines the reserved field Reserved.
  • the reserved field Reserved is defined to indicate whether the time delay trigger frame includes Trigger Dependent Common Info for the Basic Delay Trigger variant. When the value of the reserved field Reserved is 1, it means that the time delay trigger frame includes the subordinate common information trigger field, as shown in FIG. 5. That is, when the value of the reserved field Reserved is 1, the time delay trigger frame includes Trigger Dependent Common Info for the Basic Delay Trigger variant. When the value of the reserved field Reserved is 0, it means that the time delay trigger frame does not include the dependent common information trigger field.
  • the format of the subordinate common information trigger field is shown in Figure 6.
  • the subordinate public information trigger field includes a bitmap field bitmap, a content information list contentinformationlist, and a padding field.
  • the bitmap field bitmap is used to indicate whether the content information list carries the uplink data delay time UL Data Delay Time. When the value of the bitmap field is 1, it means that the content information list carries the uplink data delay time UL Data Delay Time. When the bitmap field takes a value of 0, it means that the content information list does not carry the uplink data delay time.
  • bitmap field can correspond to 4 bits. Each bit corresponds to a function.
  • Table 3 shows the function instruction table of Bitmap.
  • the bitmap field when the value of the above bitmap field is 1, the bitmap field may correspond to 1000, 0100, 0010, or 0001. It means that the time delay trigger frame contains 1 uplink data delay time and 1 uplink data.
  • the bitmap field can also correspond to 1100, 1010, 1001, 0110, 0101, 0011, etc., which means that the time delay trigger frame contains 2 delay times and 2 uplink data.
  • the above bitmap field can also correspond to 1110, 1111, and so on.
  • the unit used for the above-mentioned uplink data delay time may be 0.4 us, and the value is 0-8191.
  • the delay time indicated by the above uplink data delay time may range from 0 to 3276.4 us.
  • the above-mentioned first value may be 1, and the above-mentioned second value may also be 1. This solution does not specifically limit the above values.
  • the foregoing 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 Comomon Info, and non-Trigger Dependent User Info information.
  • common Info field in Trigger and non-reserved field in User Info field non-Trigger Dependent Comomon Info
  • non-Trigger Dependent User Info information can be MCS, NSS, RU Allocation, Length, and so on.
  • the uplink data delay time in each embodiment of the present application is not limited to one, and it may be multiple.
  • the time required to parse the time delay trigger frame and generate the uplink frame according to the scheduling indication information is less than the above-mentioned uplink data delay time.
  • the STA After receiving the time delay trigger frame, the STA sends the uplink frame at intervals of the uplink data delay time.
  • the embodiment of the present application redefines the above-mentioned common information domain Common Info to indicate that all users in the trigger are scheduled according to the delay indication time according to the delay time in the common information domain. All users in the time domain follow the instructions of the public information domain, and the uplink length is the same, and the distribution of time and frequency domain resources is consistent.
  • the multi-user uplink transmission time alignment indication under long-distance coverage can be realized, and furthermore, the time division of Trigger multiple users can be realized.
  • the embodiment of the present application also includes an improvement on the user information domain.
  • the user information field includes: user identification indication (association identifier, AID12), frequency domain resource indication information RU Allocation, UL MCS (uplink coding and modulation indication information), SS Allocation/RA-RU Information (spatial flow indication information), UL Target RSSI (uplink expected signal strength RSSI: receive signal strength indicator) and reserved fields, etc.
  • the Reserved field is defined to indicate whether the time delay trigger frame includes Trigger Dependent User Info for the Basic Delay Trigger variant.
  • the time delay trigger frame when the value of the reserved field Reserved is 1, it means that the time delay trigger frame includes a dependent user information trigger field, as shown in FIG. 7. That is, the time delay trigger frame includes Trigger Dependent User Info for the Basic Delay Trigger variant. When the value of the reserved field Reserved is 0, it means that the time delay trigger frame does not include the dependent user information trigger field.
  • the format of the trigger field of the subordinate user information may be as shown in FIG. 8.
  • the fields triggered by the subordinate user information include a bitmap field bitmap, a content information list contentinformationlist, and a padding field, where the bitmap field is used to indicate whether the content information list carries an uplink data delay time.
  • the bitmap field When the value of the bitmap field is 1, it means that the content information list carries the delay time of uplink data.
  • the bitmap field takes a value of 0, it means that the content information list does not carry the uplink data delay time.
  • the bitmap field can correspond to 4 bits. Each bit corresponds to a function. The value of the bitmap field can be as shown in Table 3 above, and will not be repeated here.
  • the new user information field provided in the embodiment of the present application is used to indicate the user delay scheduling time indicated by AID12.
  • the Trigger Dependent user Info for the Basic Delay Trigger variant triggered by the above-mentioned subordinate user information can support time division scheduling of the same user.
  • the time domain and frequency domain resources of the user scheduling on the two time division scheduling resources indicated by one user information field must be the same.
  • the fields triggered by the above subordinate user information can also support time division scheduling of different users.
  • the time domain resources are the same, and the frequency domain resources can be set the same or different. Among them, according to the final number of bits after all functions, the padding should be an integer multiple of bytes.
  • an embodiment of the present application provides an uplink delay scheduling method, including steps A1-A4, which are specifically as follows:
  • A1. Receive the time delay trigger frame sent by the AP;
  • the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate whether the time delay trigger frame includes a field triggered by a dependent public information;
  • the field triggered by the subordinate public information includes a first bitmap field and a first content information list, and the first bitmap field is used to indicate the first bitmap field.
  • a content information list carries the first uplink data delay time; when the first bitmap field takes the second value, the first content information list carries the first uplink data delay time;
  • the time delay trigger frame further includes a user information field, 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 dependent user information;
  • the second reserved field takes the third value
  • the field triggered by the subordinate user information includes a second bitmap field and a second content information list
  • the second bitmap field is used to indicate the second Whether the content information list carries the second uplink data delay time; when the second bitmap field has a value of the fourth value, the second content information list carries the second uplink data delay time;
  • the second content information list does not carry the second uplink data delay time.
  • A3. Record the second uplink data delay time as the first uplink data delay time
  • A4 Send the uplink frame to the AP at intervals of the first uplink data delay time after receiving the time delay trigger frame.
  • the transmission may be delayed according to the uplink data delay time carried in the user information field.
  • steps A3-A4 can be replaced with:
  • the transmission can be delayed according to the sum of the uplink data delay time carried in the user information domain and the public information domain.
  • the STA can select the delay time according to the setting.
  • the uplink frame can be sent with time delay only according to the uplink data delay time carried in the user information field.
  • the uplink frame can also be sent with a time delay based on the sum of the uplink data delay time carried in the public information field and the uplink data delay time carried in the user information field.
  • it can also be controlled according to the preset weights of the two times. The specific form is not limited here.
  • FIG. 9 is a schematic diagram of an uplink delay scheduling scenario provided by an embodiment of this application.
  • scheduling multiple uplink data UL Data it can be controlled separately according to each delay time.
  • 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 among the UL Data can be the same or different.
  • the overhead of the PHY frame header: preamble can be saved.
  • time-frequency resources of about 60 us can be saved.
  • this solution saves 3 trigger frame Triggers, which can save about 180us time-frequency resources.
  • the embodiment of the present application also provides an uplink delay scheduling method.
  • the time delay trigger frame involved in this method can only improve the user information field userinfo in the prior art.
  • the reserved field in the user information field userinfo is defined as a field that indicates whether the time delay trigger frame includes a dependent user information trigger Trigger Dependent User Info for the Basic Delay Trigger variant.
  • Trigger Dependent User Info for the Basic Delay Trigger variant when the value of the reserved field Reserved is 1, it means that the time delay trigger frame includes a field triggered by the dependent user information, that is, there is a Trigger Dependent User Info for the Basic Delay Trigger variant.
  • the value of the reserved field Reserved is 0, it means that the time delay trigger frame does not include the field triggered by the dependent user information.
  • the time delay trigger frame further includes a common information field commoninfo, and the common information field commoninfo also includes a trigger frame type trigger type, and the trigger frame type trigger type is used to indicate the type of the trigger frame, wherein the trigger
  • the frame type trigger type is any integer between 8 and 15. As shown in Table 2 above, the value of trigger type is 8, which will not be repeated here.
  • the new user information field provided in the embodiment of the present application is used to indicate the user delay scheduling time indicated by AID12.
  • the Trigger Dependent user Info for the Basic Delay Trigger variant triggered by the above-mentioned dependent user information can support time division scheduling of the same user.
  • the fields triggered by the above subordinate user information can also support time division scheduling of different users.
  • the embodiment of the present application also provides an uplink delay scheduling method. It includes steps 1001-1003, which are specifically as follows:
  • the MAC frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes the fifth value, the The control field includes a control list, and the control list includes a control ID and control information. When the control ID takes a sixth value, the control ID is used to indicate that the control information carries an uplink data delay time;
  • the type of the MAC frame may be a data frame.
  • the type of the MAC frame may also be a management frame.
  • the MAC frame includes the HT-control field (HE variant), and the HT control field is used to indicate whether the MAC frame includes the control field A-control subfield; when the HT control field
  • the control field A-control subfield includes a control list control list, where, as shown in Figure 13, the control list includes control ID control ID and control information control information.
  • the control ID takes a specific value, the control ID is used to indicate that the control information carries an uplink data delay time.
  • the value of the control ID can be any integer between 7 and 14. As shown in Table 4, the control ID can take a value of 13.
  • the control ID control ID is used to indicate that the control information control information carries the uplink data delay time UL Data Delay Time.
  • the size of the control information may be 13 bits.
  • the unit used for the above-mentioned uplink data delay time may be 0.4 us, and the value is 0-8191.
  • the delay time indicated by the above uplink data delay time may range from 0 to 3276.4 us.
  • the AP sends a MAC frame, and the AP also sends a trigger frame.
  • the trigger frame may be sent together with the above-mentioned MAC frame, or the MAC frame and the trigger frame may be sent in different frames.
  • the scheduling indication information is obtained by analyzing the trigger frame, and an uplink frame is generated according to the scheduling indication information. Then, sending the uplink frame at intervals of the uplink data delay time after receiving the trigger frame.
  • the STA in the embodiment of the present application adjusts the time distance between the Trigger and the uplink data according to the time delay information, and the user-level indication may include the TA (timing advance) adjustment by the AP, which simplifies the implementation of the STA.
  • TA timing advance
  • This type of indication in the embodiment of the present application may be a dynamic or semi-static configuration. In other words, the STA can remain unchanged for a period of time.
  • the STA can also apply to the scenario where there are downlink services and uplink services according to the instructions in the MAC header of the issued Data Frame. If there is no downlink service, only the user needs to send useless data to carry the MAC frame header indication if there is uplink.
  • the embodiment of the present application also provides an uplink delay scheduling method. As shown in Figure 14, it includes steps 1401-1403, which are specifically as follows:
  • the STA receives the broadcast frame sent by the AP; as shown in Figure 15, the broadcast frame includes a specific vendor domain Vendor Specific field, a content ID content ID, and a specific vendor field length length, where the content ID content ID takes a value When it is a specific value, the specific provider domain carries the uplink data delay time UL Data Delay Time; the value of the content ID content ID is not limited here.
  • the unit used for the above-mentioned uplink data delay time may be 0.4 us, and the value is 0-8191.
  • the delay time indicated by the above uplink data delay time may range from 0 to 3276.4 us.
  • the AP sends a broadcast frame, and the AP also sends a trigger frame.
  • the scheduling indication information is obtained by analyzing the trigger frame, and an uplink frame is generated according to the scheduling indication information. Then, sending the uplink frame at intervals of the uplink data delay time after receiving the trigger frame.
  • the time indication for delayed scheduling is of a semi-static broadcast type. That is, the STA that requires access by default needs to support the ability of the above-mentioned semi-static broadcast type.
  • the frequency of semi-static adjustment in this scheme only supports Beacon period adjustment.
  • delay scheduling of the uplink Data Frame is added, and there is no longer a SIFS interval between the trigger frame and the uplink Data Frame.
  • the time between the trigger Frame and the uplink Data Frame can be indicated by the time delay information in the Beacon broadcast.
  • the STA needs to jointly determine the time between the trigger Frame and the upstream Data Frame based on the TA and UL Data Delay Time.
  • detaT UL Data Delay Time-TA.
  • TA RTT/2, and RTT is the round-trip delay.
  • the STA sets the time for the uplink transmission distance to schedule the Trigger according to the field indication in the Beacon, according to the indication and the TA adjustment amount.
  • the STA starts from the access frame according to the AP's broadcast configuration, including the UORA access process, and the uplink scheduled by the trigger needs to follow the delay time indicated by the Beacon and the result of the TA to jointly adjust the uplink transmission time from the Trigger.
  • This solution can construct the structure of TDD DU, DDU, DDDU, etc. This solution only supports scheduling an uplink resource after Trigger.
  • a trigger frame Trigger Frame and a data frame Data Frame for a user to form an AMPDU, that is, an aggregation of MPDUs
  • the Data Frame indicates an immediate response to Block Ack (BA)
  • BA Block Ack
  • the current wifi protocol constraints Down Trigger and uplink Data Frame interval SIFS
  • immediately respond to the downlink Data Frame and BA interval SIFS under the ACK policy only BA and uplink Data Frame group AMPDU, or uplink data and BA frequency division, space division.
  • BA is a short control frame, which will waste a lot of time resources in frequency division and space division, because the length of different RUs under the trigger must be kept the same. For implementation, it is difficult to implement BA and uplink Data Frame group AMPDU timing.
  • an embodiment of the present application also provides an uplink delay scheduling method, including steps B1-B5, which are specifically as follows:
  • the time delay trigger frame includes a public information field, the public information field includes a reserved field, and the reserved field is used to indicate whether the time delay trigger frame includes a field triggered by a dependent common information;
  • the field triggered by the subordinate public information includes a bitmap field and a content information list, and the bitmap field is used to indicate whether the content information list carries an uplink data delay time ;
  • the bitmap field takes the second value, the content information list carries the uplink data delay time.
  • the above-mentioned first value may take a value of 1, and so on.
  • the above-mentioned second value may also take a value of 1, and so on.
  • time-delayed trigger frame is any one of the time-delayed trigger frames described in the foregoing embodiments. That is to say, the time delay trigger frame in this embodiment may also include carrying the delay time of uplink data based on the user information field. There is no specific limitation here.
  • the downlink data frame includes an HT control field, as shown in FIG. 11, 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 If the value is 1, refer to FIG. 12.
  • the control field A-control subfield includes a control list controllist and a padding field.
  • the control list controllist includes control ID and control information controlinformation, as shown in FIG. 13.
  • control ID When the control ID takes a specific value, where the specific value can be any integer value between 7 and 14, the control ID is used to indicate that the control information control information carries a short trigger response scheduling Short Triggered response scheduling (short TRS).
  • short TRS Short Triggered response scheduling
  • control information control information carries Short Triggered response scheduling (short TRS).
  • short TRS Short Triggered response scheduling
  • the method further includes:
  • the sequence of the above steps B2-B5 is not limited here. It can be done synchronously or in other preset ways.
  • FIG. 16 it is a schematic diagram of an uplink delayed scheduling scenario provided by an embodiment of this application.
  • the MAC frame header carries a short trigger response scheduling short TRS.
  • the STA uses a shorter time domain resource to reply to the BA, and uses a longer uplink resource to send the uplink Data Frame scheduled by the Trigger.
  • the Delay duration indicated in the Trigger includes the length of BA.
  • the indication of BA provides a structure in which short TRS and Trigger can coexist in one AMPDU.
  • the short TRS is carried by the reserved control ID in the A-control subfield of the HT-control field (HE variant) of the MAC frame header.
  • Table 5 As shown in Table 5.
  • short TRS exists and is 1, it means that the frequency domain resource of the BA resource is equivalent to the uplink resource position, and the MCS adopts the low-level MCS0, or according to the previously negotiated MCS, the MCS of all BAs remain the same and are sent according to the lowest order of MCS
  • the same BA format ensures that the time length is consistent and the AP can be guessed.
  • Short TRS (Triggered response scheduling) is added in this embodiment. After receiving the Short TRS, the STA will use the Short TRS to negotiate before using it on the peer-to-peer frequency domain resources (if there is no negotiation, use a fixed MCS0) to send an ACK policy. BA format.
  • Trigger Frame and Downlink Data Frame are grouped into one AMPDU.
  • BA occupies less time, and in large uplink scenarios, there will be at least a 5% increase in uplink throughput. Compared with Trigger Frame and Downlink Data Frame time-division transmission, the same downlink service rate and scenario are maintained.
  • an embodiment of the present application also provides an uplink delay scheduling method, including steps C1-C3, which are specifically as follows:
  • the downlink data frame includes an HT control field, 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 the fifth value, the control field A -control subfield includes a control list controllist.
  • the control list includes a first control ID control ID and first control information control information.
  • the first control ID control ID When the first control ID control ID takes the sixth value, the first control ID control ID It is used to indicate that the first control information control information carries the uplink data delay time; the control list controllist also includes a second control ID control ID and a second control information control information, when the second control ID control ID takes a value of eighth Value, the second control ID control ID is used to indicate that the second control information control information carries short trigger response scheduling short TRS; wherein, the MAC frame is either a data frame or a management frame;
  • the first control ID control ID, the first control information control information and the second control ID control ID, and the second control information control information may be located in different MAC frames, respectively. That is, the uplink data delay time and the short trigger response scheduling may not be in the same MAC frame. That is to say, this solution can be implemented in only one MAC frame, or it can be implemented in two MAC frames.
  • the control ID in one of the MAC frames takes the sixth value, and the control ID is used to indicate that the control information carries the uplink data delay time.
  • the value of the control ID in another MAC frame is the eighth value, and the control ID is used to indicate that the control information carries the short trigger response scheduling short TRS.
  • FIG. 17 it is a schematic diagram of another uplink delay scheduling scenario provided by an embodiment of this application.
  • the above-mentioned MAC frame containing the uplink data delay time and the downlink data group AMPDU, wherein the MAC frame header carries a short trigger response scheduling short TRS.
  • the STA uses a shorter time domain resource to reply to the BA, and uses a longer uplink resource to send the uplink Data Frame scheduled by the Trigger.
  • an embodiment of the present application also provides an uplink delay scheduling method, including steps D1-D4, which are specifically as follows:
  • the specific provider domain carries the uplink data delay time
  • a MAC frame sent by an AP where the MAC frame includes a trigger frame and a downlink data frame, the downlink data frame includes an HT control field, 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 the fifth value, the control field A-control subfield includes a control list controllist, and the control list controllist includes control ID control ID and control information control information, when the control ID control ID takes When the value is the eighth value, the control ID control ID is used to indicate that the control information control information carries short trigger response scheduling short TRS;
  • the broadcast frame and the MAC frame are not in the same MAC frame.
  • the uplink data delay time in the broadcast frame and the short trigger response scheduling short TRS in the downlink data frame please refer to the foregoing embodiment, and will not be repeated here.
  • the broadcast frame carries the uplink data delay time.
  • the MAC frame header carries short trigger response scheduling short TRS.
  • the STA uses a shorter time domain resource to reply to the BA, and uses a longer uplink resource to send the uplink Data Frame scheduled by the Trigger.
  • the uplink and downlink concurrent means provided by the foregoing embodiments can be widely used in an enhanced WIFI system with enhanced coverage distance, especially for 5km coverage, and a single AP can meet capacity requirements.
  • video return cameras are widely distributed, each camera's business volume is not high, and the number of users in many industrial scenes is limited, such as fishery monitoring and linear highway monitoring.
  • the same TDD format can be constructed with the TDD system to avoid full duplex or uplink and downlink interference.
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive the time delay trigger frame sent by the AP; wherein the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate all Whether the time delay trigger frame includes a field triggered by the subordinate public information; when the first reserved field takes the first value, the field triggered by the subordinate common information includes a first bitmap field and a first content information list , The first bitmap field is used to indicate whether the first content information list carries the first uplink data delay time; when the first bitmap field takes the second value, the first content information list Carrying the first uplink data delay time;
  • a processing module configured to parse the time delay trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information
  • the sending module is configured to send the uplink frame to the AP at intervals of the first uplink data delay time after receiving the time delay trigger frame.
  • the time delay trigger frame further includes a user information field, 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 subordinate user information trigger Field; when the second reserved field takes the third value, the field triggered by the subordinate user information includes a second bitmap field and a second content information list, and the second bitmap field is used to indicate all Whether the second content information list carries the second uplink data delay time; when the second bitmap field has a value of the fourth value, the second content information list carries the second uplink data delay time;
  • the sending module is specifically used for:
  • the sending module is specifically used for:
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive a time delay trigger frame sent by the AP; the time delay trigger frame includes a user information field, the user information field includes a second reserved field, and the second reserved field is used to indicate the time Whether the delayed trigger frame includes a field triggered by subordinate user information; when the second reserved field takes a value of the third value, the field triggered by the subordinate user information includes a second bitmap field and a second content information list, so The second bitmap field is used to indicate whether the second content information list carries the second uplink data delay time; when the second bitmap field takes the fourth value, the second content information list carries all The second uplink data delay time;
  • a processing module configured to parse the time delay trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information
  • the sending module is configured to send the uplink frame to the AP at intervals of the second uplink data delay time after receiving the time delay trigger frame.
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive the MAC frame sent by the AP; the MAC frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes the fifth value When the control field includes a control list, the control list includes a control ID and control information. When the control ID takes the sixth value, the control ID is used to indicate that the control information carries the uplink data delay time. ;
  • the MAC frame is any one of a data frame and a management frame
  • a processing module configured to parse the MAC frame to obtain the uplink data delay time
  • the sending module is configured to send an uplink frame to the AP at intervals of the uplink data delay time after receiving the trigger frame sent by the AP, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.
  • the AP sends a MAC frame, and the AP also sends a trigger frame.
  • the trigger frame may be sent together with the above-mentioned MAC frame, or the MAC frame and the trigger frame may be sent in different frames.
  • the trigger frame is not restricted here.
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • the receiving module is used to receive the broadcast frame sent by the AP;
  • the broadcast frame includes a specific provider domain and a content ID, where, when the content ID takes the seventh value, the specific provider domain carries the uplink data delay time ;
  • a processing module configured to parse the broadcast frame to obtain the uplink data delay time
  • the sending module is configured to send an uplink frame to the AP at intervals of the uplink data delay time after receiving the trigger frame sent by the AP, where the uplink frame is obtained by analyzing the trigger frame sent by the AP.
  • the AP sends a broadcast frame, and the AP also sends a trigger frame.
  • the scheduling indication information is obtained by analyzing the trigger frame, and an uplink frame is generated according to the scheduling indication information. Then, sending the uplink frame at intervals of the uplink data delay time after receiving the trigger frame.
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • a receiving module configured to receive a MAC frame sent by an AP, where the MAC frame includes a time delay trigger frame and a downlink data frame;
  • the time delay trigger frame includes a public information field, the public information field includes a first reserved field, and the first reserved field is used to indicate whether the time delay trigger frame includes a field triggered by a dependent public information;
  • the field triggered by the subordinate public information includes a first bitmap field and a first content information list, and the first bitmap field is used to indicate the first content Whether the information list carries the uplink data delay time;
  • the first bitmap field takes the second value, the first content information list carries the uplink data delay time;
  • the downlink data frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes a value of the fifth value, the control field includes a control list, so The control list includes a control ID and control information, and when the control ID takes an eighth value, the control ID is used to indicate that the control information carries a short trigger response schedule;
  • a processing module configured to parse the time delay trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the downlink data frame to obtain a short trigger response schedule;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the time delay trigger frame; and according to the short trigger response scheduling to send an acknowledgment within the uplink data delay time frame.
  • the MAC frame header carries the short trigger response scheduling short TRS.
  • the STA uses a shorter time domain resource to reply to the BA, and uses a longer uplink resource to send the uplink Data Frame scheduled by the Trigger.
  • the Delay duration indicated in Trigger includes the length of BA.
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • a receiving module configured to receive a MAC frame sent by an AP, where the MAC frame includes a trigger frame and a downlink data frame;
  • the downlink data frame includes an HT control field, and the HT control field is used to indicate whether the MAC frame includes a control field; when the HT control field takes a value of the fifth value, the control field includes a control list, so The 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 an uplink data delay time; The control list further includes a second control ID and second control information. When the second control ID takes an eighth value, the second control ID is used to indicate that the second control information carries a short trigger response Scheduling; wherein, the MAC frame is any one of a data frame and a management frame;
  • a processing module configured to parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the downlink data frame to obtain the uplink data delay time and the short trigger response schedule;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the MAC frame; and according to the short trigger response scheduling to send an acknowledgement frame within the uplink data delay time.
  • the uplink data delay time and the short trigger response scheduling are located in the same MAC frame, and different values of multiple control IDs in the control list are used to indicate different information.
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • a receiving module configured to receive a first MAC frame and a second MAC frame sent by an AP, where the first MAC frame includes a first downlink data frame; the second MAC frame includes a trigger frame and a second downlink data frame;
  • the first downlink data frame includes a first HT control field, and the first HT control field is used to indicate whether the first MAC frame includes a first control field; when the value of the first HT control field is the first When the value is five, the first control field includes a first control list, and the first control list includes a first control ID and first control information. When the first control ID takes the sixth value, the The first control ID is used to indicate that the first control information carries the uplink data delay time;
  • the second downlink data frame includes a second HT control field, and the second HT control field is used to indicate whether the second MAC frame includes a second control field; when the value of the second HT control field is fifth Value, the second control field includes a second control list, the second control list includes a second control ID and second control information, when the second control ID takes the eighth value, the first 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 respectively any one of a data frame and a management frame
  • the processing module is configured to parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; and parse the first downlink data frame to obtain the uplink data delay time, and parse the second downlink The data frame obtains the short trigger response schedule;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the second MAC frame; and send an acknowledgement within the uplink data delay time according to the short trigger response schedule frame.
  • 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.
  • the embodiment of the present application also provides an uplink delay scheduling system, including:
  • the receiving module is configured to receive a broadcast frame sent by the AP;
  • the broadcast frame includes a specific vendor field, and the specific vendor field includes a content ID and a specific vendor field, where the content ID takes the seventh value ,
  • the specific provider domain carries the uplink data delay time;
  • the MAC frame includes a trigger frame and a downlink data frame
  • the downlink data frame includes an HT control field
  • the HT control field is used to indicate whether the MAC frame includes a control field; when the HT
  • the control field includes a control list
  • the control list includes a control ID and control information.
  • the control ID is used to indicate all
  • the control information carries short trigger response scheduling;
  • the processing module is configured to parse the trigger frame to obtain scheduling indication information, and generate an uplink frame according to the scheduling indication information; parse the broadcast frame to obtain the uplink data delay time; parse the downlink data frame to obtain the short Trigger response scheduling;
  • the sending module is configured to send the uplink frame to the AP at intervals of the uplink data delay time after receiving the MAC frame; and according to the short trigger response scheduling to send an acknowledgement frame within the uplink data delay time.
  • the uplink data delay time is carried in the broadcast frame
  • the short trigger response scheduling short TRS indication is carried in the downlink data frame in the MAC frame.
  • the MAC frame header carries the short trigger response scheduling short TRS.
  • the STA uses a shorter time domain resource to reply to the BA, and uses a longer uplink resource to send the uplink Data Frame scheduled by the Trigger.
  • the embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each functional unit in each embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or in the form of software program modules.
  • the integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer readable memory.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory.
  • a number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application.
  • the foregoing memory includes: U disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer-readable memory, and the memory can include: a flash disk , Read-only memory, random access device, magnetic or optical disk, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte, dans les modes de réalisation, sur un procédé et sur un système de planification de retard de liaison montante, ainsi que sur un support de stockage. Le procédé consiste : à recevoir une trame de déclenchement de retard temporel envoyée par un point d'accès (AP pour Access Point), la trame de déclenchement de retard temporel comprenant un domaine d'informations commun, le domaine d'informations commun comprenant un premier champ réservé et le premier champ réservé étant utilisé pour indiquer si la trame de déclenchement de retard temporel comprend un champ déclenché par des informations communes subordonnées ; lorsque la valeur du premier champ réservé est une première valeur et que la valeur d'un premier champ de table de bits est une seconde valeur, une première liste d'informations de contenu comporte un premier temps de retard de données de liaison montante ; à analyser la trame de déclenchement de retard temporel pour obtenir des informations d'instruction de planification et à générer une trame de liaison montante selon les informations d'instruction de planification ; après la réception de la trame de déclenchement de retard temporel, à envoyer la trame de liaison montante au point d'accès à un intervalle du premier temps de retard de données de liaison montante. En utilisant le moyen décrit, l'indication d'alignement temporel de transmission de liaison montante multiutilisateur dans une couverture à longue distance peut être obtenue et une division de temps multiutilisateur peut également être obtenue.
PCT/CN2019/130842 2019-12-31 2019-12-31 Procédé et système de planification de retard de liaison montante et support de stockage WO2021134630A1 (fr)

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CN201980103223.1A CN114846834A (zh) 2019-12-31 2019-12-31 一种上行延迟调度方法、系统及存储介质

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