WO2022042608A1 - 通信方法及装置 - Google Patents
通信方法及装置 Download PDFInfo
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- WO2022042608A1 WO2022042608A1 PCT/CN2021/114554 CN2021114554W WO2022042608A1 WO 2022042608 A1 WO2022042608 A1 WO 2022042608A1 CN 2021114554 W CN2021114554 W CN 2021114554W WO 2022042608 A1 WO2022042608 A1 WO 2022042608A1
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Definitions
- the present application relates to the field of wireless communication technologies, and in particular, to a communication method and apparatus.
- the Institute of Electrical and Electronic Engineers (IEEE) 802.11be standard may support some special application scenarios, such as scheduling (Scheduled) peer-to-peer (Peer-to-Peer, P2P) Scenarios, coordinated time division multiple access (CO-TDMA) scenarios, etc.
- scheduling Scheduled
- peer-to-peer P2P
- CO-TDMA coordinated time division multiple access
- multiple stations are connected through P2P technology to form a small network, so that multiple STAs can communicate directly with each other.
- An access point (access point) AP can allocate time resources to one STA, so that the STA can communicate with other STAs within the allocated time resources.
- Two AP roles are defined in the CO-TDMA scenario: a sharing (sharing) AP and a shared (shared) AP.
- the sharing AP obtains the TXOP, it can allocate a part of the time resource in the TXOP to the shared AP, so that the shared AP uses the time resource to communicate with the station associated with the shared AP.
- the present application provides a communication method for implementing one type of radio frame to support different usage requirements of time resources in multiple application scenarios, so that the radio frame has universality.
- a first aspect provides a communication method, the method includes: a first device generates a first frame, the first frame includes a first field and a second field, the first field is used to indicate the duration of the first time resource, and the second field
- the purpose of the first time resource includes: the first time resource is used to transmit a single-user physical layer protocol data unit (PHY protocol data unit, PPDU), or the first time resource is used to perform Frame interaction; the first device sends the first frame to the second device.
- PHY protocol data unit PHY protocol data unit
- the first frame includes a first field and a second field.
- the first field is used to indicate the duration of the first time resource
- the second field may be used to indicate that the first time resource is used to transmit a single-user PPDU, or the first field is used to indicate the duration of the first time resource.
- the second field is used to indicate that the first time resource is used for frame interaction.
- the first frame can be applied to scenes with different uses of temporal resources, so that the first frame has generality.
- the duration of the single-user PPDU is equal to the duration of the first time resource. This ensures that multi-link devices that do not support STR can align single-user PPDUs sent on different links.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; or, when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for frame interaction.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for the cooperative device to perform frame interaction, and the cooperative device and the first device do not belong to the same basic service set ( basic service set, BSS); when the second field is set to a third preset value, the third field is used to determine that the first time resource is used for frame interaction between end-to-end stations.
- the first frame further includes a trigger frame type field, and the value of the trigger frame type field is any one of 8-15.
- the first frame is a basic type (basic) trigger frame
- the B63 bit in the basic trigger frame is set to 1.
- the first field and the second field are located in the common information field or the user information field of the first frame.
- the first frame also includes an A-control (control) field
- the A-control field includes a control identification field and a control information field
- the value of the control identification field is any one of 7-14
- the first The field and the second field are in the control information field.
- the first frame also includes an A-control field using trigger response scheduling (TRS), the A-control field includes a TRS control field, and the TRS control field includes a first field and a second field,
- TRS trigger response scheduling
- the above communication method further includes: the first device receives a response frame sent by the second device, the response frame includes a third field, and the third field is used to indicate whether the second device accepts the first time resource.
- the above-mentioned communication method further includes: the first device receives the first radio frame sent by the second device at the first time resource, and sends the modulation and coding strategy (modulation and coding scheme, MCS) used by the radio frame. Less than or equal to the maximum MCS supported by the first device. In this way, the first device can parse the first radio frame, so as to know that the second device accepts the first time resource.
- MCS modulation and coding scheme
- the above communication method further includes: the first device receives buffer status information sent by the second device, where the buffer status information is used to indicate the amount of buffered data. It should be understood that, by sending the cache status information to the first device, the second device can assist the first device in allocating time resources.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data volume.
- the total amount of upstream buffered data is the sum of the upstream buffered data volume of one or more sites associated with the second device, and the total downlink buffered data volume is the downlink buffered data volume of one or more sites associated with the second device. The sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication method includes: a second device receives a first frame sent by a first device, the first frame includes a first field and a second field, and the first field is used to indicate a first time resource The second field is used to determine the purpose of the first time resource, and the purpose of the first time resource includes: the first time resource is used for transmitting a single-user physical layer protocol data unit PPDU, or the first time resource is used for frame Interaction; second device parses first frame.
- the first frame includes a first field and a second field.
- the first field is used to indicate the duration of the first time resource
- the second field may be used to indicate that the first time resource is used to transmit a single-user PPDU, or the first field is used to indicate the duration of the first time resource.
- the second field is used to indicate that the first time resource is used for frame interaction.
- the first frame can be applied to scenes with different uses of temporal resources, so that the first frame has generality.
- the duration of the single-user PPDU is equal to the duration of the first time resource. This ensures that multi-link devices that do not support STR can align single-user PPDUs sent on different links.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; or, when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for frame interaction.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; or, when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for frame interaction by the cooperating device, and the cooperating device and the first device do not belong to the same basic service or, when the second field is set to a third preset value, the third field is used to determine that the first time resource is used for the end-to-end station to perform frame interaction.
- the first frame further includes a trigger frame type field, and the value of the trigger frame type field is any one of 8-15.
- the first frame is a basic type basic trigger frame
- the B63 bit in the basic trigger frame is set to 1.
- the first field and the second field are located in the common information field or the user information field of the first frame.
- the first frame also includes an A-control control field
- the A-control field includes a control identification field and a control information field
- the value of the control identification field is any one of 7-14
- the first field and The second field is in the control information field.
- the first frame also includes the A-control control field using the trigger response scheduling type TRS, the A-control field includes the TRS control field, the TRS control field includes the first field and the second field, and in the TRS control field The reserved bit is set to 1.
- the above communication method further includes: the second device sends a response frame to the first device, the response frame includes a third field, and the third field is used to indicate whether the second device accepts the first time resource.
- the above communication method further includes: the second device sends the first radio frame in the first time resource, and the MCS used for sending the radio frame is less than or equal to the maximum MCS supported by the first device.
- the above communication method further includes: buffer status information sent by the second device to the first device, where the buffer status information is used to indicate the amount of buffered data.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data volume.
- the total amount of upstream buffered data is the sum of the upstream buffered data volume of one or more sites associated with the second device, and the total downlink buffered data volume is the downlink buffered data volume of one or more sites associated with the second device. The sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication method comprising: a first device generating a second frame carrying a command and status (command and status, CAS) control field, where the CAS control field includes a fourth field and a fifth field, and the fourth The field is used to determine whether to transfer the remaining time of the transmission opportunity (TXOP) to the second device, so that the second device can communicate with the first device within the remaining time of the TXOP; the fifth field is used to determine whether to transfer the TXOP The remaining time is transferred to the second device, so that the second device and the third device communicate within the remaining time of the TXOP, and the third device does not include the first device; the first device sends the first device carrying the CAS control field to the second device. Two frames.
- TXOP transmission opportunity
- the fourth field can support the usage setting of the remaining time of TXOP in one type of application scenario
- the fifth field can support the usage setting of the remaining time of TXOP in another type of application scenario. Therefore, based on the fourth field and the fifth field, the second frame can be applied to application scenarios with different arrangements for the remaining time of the TXOP, such as a scenario applying the RDG mechanism, a Scheduled P2P scenario, or a CO-TDMA scenario.
- the second frame has generality.
- the fourth field when the fourth field is set to a fourth preset value, the fourth field is used to determine to transfer the remaining time of the transmission opportunity TXOP to the second device, so that the second device and the first device are in the TXOP. or, when the fourth field is set to a fifth preset value, the fourth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fifth field when the fifth field is set to the fourth preset value, the fifth field is used to indicate that the remaining time of the TXOP is determined to be transferred to the second device, so that the second device and the third device are in the TXOP period. Perform communication within the remaining time; or, when the fifth field is set to a fifth preset value, the fifth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fourth field and the fifth field cannot be set to the fourth preset value at the same time.
- the CAS control field further includes a sixth field, and the sixth field is used to indicate whether the type of the data frame sent by the second device within the remaining time of the TXOP is limited.
- the CAS control field further includes a seventh field, and the seventh field is used to indicate whether the second device is allowed to transfer the remaining time of the TXOP to other devices except the first device.
- the above communication method further includes: the first device receives a response frame sent by the second device, the response frame includes an eighth field, and the eighth field is used for whether the second device accepts the remaining time of the TXOP.
- the above communication method further includes: the first device receives the first radio frame sent by the second device within the remaining time of the TXOP, and the MCS used for sending the radio frame is less than or equal to the maximum value supported by the first device. MCS.
- the above communication method further includes: the first device receives buffer status information sent by the second device, where the buffer status information is used to indicate the amount of buffered data.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data
- the total amount of upstream buffered data is the sum of the upstream buffered data volume of one or more sites associated with the second device
- the total downlink buffered data volume is the downlink buffered data volume of one or more sites associated with the second device. The sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication method comprising: the second device receiving a second frame that carries a CAS control field sent by the first device, the CAS control field includes a fourth field and a fifth field, and the fourth field is used to determine Whether to transfer the remaining time of the TXOP to the second device, so that the second device communicates with the first device within the remaining time of the TXOP; the fifth field is used to determine whether to transfer the remaining time of the TXOP to the second device, so that The second device communicates with the third device within the remaining time of the TXOP, and the third device does not include the first device; the second device parses the second frame carrying the CAS control field.
- the fourth field can support the usage setting of the remaining time of TXOP in one type of application scenario
- the fifth field can support the usage setting of the remaining time of TXOP in another type of application scenario. Therefore, based on the fourth field and the fifth field, the second frame can be applied to application scenarios with different arrangements for the remaining time of the TXOP, such as a scenario applying the RDG mechanism, a Scheduled P2P scenario, or a CO-TDMA scenario.
- the second frame has generality.
- the fourth field when the fourth field is set to a fourth preset value, the fourth field is used to determine to transfer the remaining time of the transmission opportunity TXOP to the second device, so that the second device and the first device are in the TXOP. or, when the fourth field is set to a fifth preset value, the fourth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fifth field when the fifth field is set to the fourth preset value, the fifth field is used to indicate that the remaining time of the TXOP is determined to be transferred to the second device, so that the second device and the third device are in the TXOP period. Perform communication within the remaining time; or, when the fifth field is set to a fifth preset value, the fifth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fourth field and the fifth field cannot be set to the fourth preset value at the same time.
- the CAS control field further includes a sixth field, and the sixth field is used to indicate whether the type of the data frame sent by the second device within the remaining time of the TXOP is limited.
- the CAS control field further includes a seventh field, and the seventh field is used to indicate whether the second device is allowed to transfer the remaining time of the TXOP to other devices except the first device.
- the above communication method further includes: the second device sends a response frame to the first device, the response frame includes an eighth field, and the eighth field is used for whether the second device accepts the remaining time of the TXOP.
- the above communication method further includes: the second device sends the first radio frame within the remaining time of the TXOP, and the MCS used for sending the radio frame is less than or equal to the maximum MCS supported by the first device.
- the above communication method further includes: buffer status information sent by the second device to the first device, where the buffer status information is used to indicate the amount of buffered data.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data volume.
- the total amount of upstream buffered data is the sum of the upstream buffered data volume of one or more sites associated with the second device, and the total downlink buffered data volume is the downlink buffered data volume of one or more sites associated with the second device. The sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication device including a processing module and a communication module.
- a processing module configured to generate a first frame, the first frame includes a first field and a second field, the first field is used to indicate the duration of the first time resource, the second field is used to determine the purpose of the first time resource, the first
- the purposes of the time resource include: the first time resource is used for transmitting a single-user PPDU, or the first time resource is used for frame interaction.
- the communication module is used for sending the first frame to the second device.
- the duration of the single-user PPDU is equal to the duration of the first time resource.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; or, when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for frame interaction.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for the cooperative device to perform frame interaction, and the cooperative device and the first device do not belong to the same basic service set; When the second field is set to a third preset value, the third field is used to determine that the first time resource is used for the end-to-end station to perform frame interaction.
- the first frame further includes a trigger frame type field, and the value of the trigger frame type field is any one of 8-15.
- the first frame is a basic trigger frame
- the B63 bit in the basic trigger frame is set to 1.
- the first field and the second field are located in the common information field or the user information field of the first frame.
- the first frame also includes an A-control field
- the A-control field includes a control identification field and a control information field
- the value of the control identification field is any one of 7-14
- the first field and the first field are The second field is in the control information field.
- the first frame also includes the A-control field using TRS
- the A-control field includes the TRS control field
- the TRS control field includes the first field and the second field
- the reserved bits in the TRS control field are set is 1.
- the communication module is further configured to receive a response frame sent by the second device, the response frame includes a third field, and the third field is used to indicate whether the second device accepts the first time resource.
- the communication module is further configured to receive the first radio frame sent by the second device in the first time resource, and the MCS used for sending the radio frame is less than or equal to the maximum MCS supported by the first device.
- the communication module is further configured to receive buffer status information sent by the second device, where the buffer status information is used to indicate the amount of buffered data.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data volume.
- the total amount of upstream buffered data is the sum of the upstream buffered data volume of one or more sites associated with the second device, and the total downlink buffered data volume is the downlink buffered data volume of one or more sites associated with the second device. The sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication device including a processing module and a communication module.
- a communication module configured to receive the first frame sent by the first device, the first frame includes a first field and a second field, the first field is used to indicate the duration of the first time resource, and the second field is used to determine the first time
- the usage of the resource, the usage of the first time resource includes: the first time resource is used for transmitting a single-user physical layer protocol data unit PPDU, or the first time resource is used for frame interaction.
- Processing module for parsing the first frame.
- the duration of the single-user PPDU is equal to the duration of the first time resource.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; or, when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for frame interaction.
- the second field is used to determine the purpose of the first time resource, including the following situations: when the second field is set to a first preset value, the second field is used to determine that the first time resource is used for transmission A single-user PPDU; or, when the second field is set to a second preset value, the second field is used to determine that the first time resource is used for frame interaction by the cooperating device, and the cooperating device and the first device do not belong to the same basic service or, when the second field is set to a third preset value, the third field is used to determine that the first time resource is used for the end-to-end station to perform frame interaction.
- the first frame further includes a trigger frame type field, and the value of the trigger frame type field is any one of 8-15.
- the first frame is a basic type basic trigger frame
- the B63 bit in the basic trigger frame is set to 1.
- the first field and the second field are located in the common information field or the user information field of the first frame.
- the first frame also includes an A-control field
- the A-control field includes a control identification field and a control information field
- the value of the control identification field is any one of 7-14
- the first field and the first field are The second field is in the control information field.
- the first frame also includes the A-control field that uses the trigger TRS, the A-control field includes the TRS control field, the TRS control field includes the first field and the second field, and the reserved bits in the TRS control field Set to 1.
- the communication module is further configured to send a response frame to the first device, where the response frame includes a third field, and the third field is used to indicate whether the second device accepts the first time resource.
- the communication module is further configured to send the first radio frame in the first time resource, and the MCS used for sending the radio frame is less than or equal to the maximum MCS supported by the first device.
- the communication module is further configured to send buffer status information to the first device, where the buffer status information is used to indicate the amount of buffered data.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data volume.
- the sum of the amount of upstream buffer data wherein, the total uplink buffer data volume is the sum of the uplink buffer data volume of one or more sites associated with the second device, and the downlink total buffer data volume is the downlink buffer data volume of one or more sites associated with the second device.
- the sum of the amount of cached data is the sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication device including a processing module and a communication module.
- the processing module is used to generate the second frame carrying the command and status CAS control control field, the CAS control field includes a fourth field and a fifth field, and the fourth field is used to determine whether to transfer the remaining time of the transmission opportunity TXOP to the second device , so that the second device and the first device communicate within the remaining time of the TXOP; the fifth field is used to determine whether to transfer the remaining time of the TXOP to the second device, so that the second device and the third device can communicate with the third device during the remaining time of the TXOP.
- the third device does not include the first device.
- a communication module configured to send the second frame carrying the CAS control field to the second device.
- the fourth field when the fourth field is set to a fourth preset value, the fourth field is used to determine to transfer the remaining time of the transmission opportunity TXOP to the second device, so that the second device and the first device are in the TXOP. or, when the fourth field is set to a fifth preset value, the fourth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fifth field when the fifth field is set to the fourth preset value, the fifth field is used to indicate that the remaining time of the TXOP is determined to be transferred to the second device, so that the second device and the third device are in the TXOP period. Perform communication within the remaining time; or, when the fifth field is set to a fifth preset value, the fifth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fourth field and the fifth field cannot be set to the fourth preset value at the same time.
- the CAS control field further includes a sixth field, and the sixth field is used to indicate whether the type of the data frame sent by the second device within the remaining time of the TXOP is limited.
- the CAS control field further includes a seventh field, and the seventh field is used to indicate whether the second device is allowed to transfer the remaining time of the TXOP to other devices except the first device.
- the communication module is further configured to receive a response frame sent by the second device, the response frame includes an eighth field, and the eighth field is used for whether the second device accepts the remaining time of the TXOP.
- the communication module is further configured to receive the first radio frame sent by the second device within the remaining time of the TXOP, and the MCS used for sending the radio frame is less than or equal to the maximum MCS supported by the first device.
- the communication module is further configured to receive buffer status information sent by the second device, where the buffer status information is used to indicate the amount of buffered data.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data volume.
- the total amount of upstream buffered data is the sum of the upstream buffered data volume of one or more sites associated with the second device, and the total downlink buffered data volume is the downlink buffered data volume of one or more sites associated with the second device. The sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication device including a processing module and a communication module.
- the communication module is used for receiving the second frame carrying the CAS control field sent by the first device, the CAS control field includes a fourth field and a fifth field, and the fourth field is used to determine whether to transfer the remaining time of the transmission opportunity TXOP to the second frame device, so that the second device and the first device communicate within the remaining time of the TXOP; the fifth field is used to determine whether to transfer the remaining time of the TXOP to the second device, so that the second device and the third device can communicate with the third device within the remaining time of the TXOP. During the remaining time to communicate, the third device does not include the first device.
- the processing module is used to parse the second frame carrying the CAS control field.
- the fourth field when the fourth field is set to a fourth preset value, the fourth field is used to determine to transfer the remaining time of the transmission opportunity TXOP to the second device, so that the second device and the first device are in the TXOP. or, when the fourth field is set to a fifth preset value, the fourth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fifth field when the fifth field is set to the fourth preset value, the fifth field is used to indicate that the remaining time of the TXOP is determined to be transferred to the second device, so that the second device and the third device are in the TXOP period. Perform communication within the remaining time; or, when the fifth field is set to a fifth preset value, the fifth field is used to determine not to transfer the remaining time of the transmission opportunity TXOP to the second device.
- the fourth field and the fifth field cannot be set to the fourth preset value at the same time.
- the CAS control field further includes a sixth field, and the sixth field is used to indicate whether the type of the data frame sent by the second device within the remaining time of the TXOP is limited.
- the CAS control field further includes a seventh field, and the seventh field is used to indicate whether the second device is allowed to transfer the remaining time of the TXOP to other devices except the first device.
- the communication module is further configured to send a response frame to the first device, the response frame includes an eighth field, and the eighth field is used for whether the second device accepts the remaining time of the TXOP.
- the communication module is further configured to send the first radio frame within the remaining time of the TXOP, and the MCS used for sending the radio frame is less than or equal to the maximum MCS supported by the first device.
- the communication module is further configured to send buffer status information to the first device, where the buffer status information is used to indicate the amount of buffered data.
- the buffered data volume includes one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the total uplink buffered data volume and the total downlink buffered data volume.
- the total amount of upstream buffered data is the sum of the upstream buffered data volume of one or more sites associated with the second device, and the total downlink buffered data volume is the downlink buffered data volume of one or more sites associated with the second device. The sum of the amount of cached data.
- the amount of buffered data is the sum of the amount of buffered data on one or more P2P links established by the second device.
- a communication device in a ninth aspect, includes a processor and a transceiver, and the processor and the transceiver are configured to implement any one of the methods provided in any one of the first to fourth aspects above.
- the processor is used for executing the processing action in the corresponding method
- the transceiver is used for executing the action of receiving/transmitting in the corresponding method.
- a computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, causes the computer to execute any one of the first to fourth aspects. any method.
- An eleventh aspect provides a computer program product comprising computer instructions, which, when the computer instructions are executed on a computer, cause the computer to perform any one of the methods provided in any one of the first to fourth aspects.
- a twelfth aspect provides a chip, comprising: a processing circuit and a transceiver pin, where the processing circuit and the transceiver pin are used to implement any one of the methods provided in any one of the foregoing first to fourth aspects.
- the processing circuit is used for executing the processing action in the corresponding method
- the transceiver pin is used for executing the receiving/transmitting action in the corresponding method.
- the technical effect brought by any one of the designs in the fifth aspect to the twelfth aspect can refer to the technical effect brought by the corresponding design in the first aspect to the fourth aspect, which will not be repeated here.
- FIG. 1 is a schematic diagram of a frame structure of a trigger frame
- FIG. 2 is a schematic diagram of a common information field in a trigger frame
- FIG. 3 is a schematic diagram of a user information field in a trigger frame
- Fig. 4 (a) is a kind of schematic diagram of A-control field
- Figure 4(b) is a schematic diagram of a TRS control field
- FIG. 5 is a schematic diagram of a communication scenario between an AP multi-link device and a STA multi-link device according to an embodiment of the present application
- Figure 6 (a) and Figure 6 (b) are schematic structural diagrams of AP multi-link devices and STA multi-link devices participating in communication;
- FIG. 7 is a schematic diagram of applying a radio frame #1 to a multi-link scenario according to an embodiment of the present application.
- FIG. 8 is a schematic diagram of a Scheduled P2P scenario provided by an embodiment of the present application.
- FIG. 9 is a schematic diagram of a CO-TDMA scenario provided by an embodiment of the present application.
- FIG. 10 is a schematic diagram of applying a radio frame #2 to a Scheduled P2P scenario according to an embodiment of the present application
- FIG. 11 is a schematic diagram of applying a radio frame #2 to a CO-TDMA scenario according to an embodiment of the present application.
- 16 is a schematic diagram of a CAS control field provided by an embodiment of the present application.
- FIG. 17 is a flowchart of another communication method provided by an embodiment of the present application.
- FIG. 18 is a flowchart of another communication method provided by an embodiment of the present application.
- FIG. 19 is a flowchart of another communication method provided by an embodiment of the present application.
- 21 is a schematic structural diagram of a cache state information provided by an embodiment of the present application.
- FIG. 22 is a schematic structural diagram of another cache state information provided by an embodiment of the present application.
- FIG. 23 is a schematic structural diagram of another cache state information provided by an embodiment of the present application.
- FIG. 24 is a schematic structural diagram of another cache state information provided by an embodiment of the present application.
- FIG. 25 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
- FIG. 26 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
- the technical solutions provided in this application can be applied to various communication systems, for example, systems using the IEEE 802.11 standard.
- the IEEE 802.11 standard includes, but is not limited to, the 802.11be standard, or the next-generation 802.11 standard.
- the applicable scenarios of the technical solution of the present application include: communication between AP and STA, communication between AP and AP, and communication between STA and STA.
- the STAs involved in this application may be various user terminals, user devices, access devices, subscriber stations, subscriber units, mobile stations, user agents, user equipment or other names with wireless communication functions, wherein the user terminals may include various A handheld device, vehicle-mounted device, wearable device, computing device, or other processing device connected to a wireless modem with wireless communication capabilities, as well as various forms of user equipment (UE), mobile station (MS) , terminal, terminal equipment, portable communication device, handset, portable computing device, entertainment device, gaming device or system, global positioning system device or any other suitable device configured to communicate via a wireless medium over a network equipment, etc.
- UE user equipment
- MS mobile station
- terminal equipment terminal equipment
- portable communication device handset
- portable computing device portable computing device
- entertainment device gaming device or system
- gaming device or system global positioning system device
- the access point AP involved in this application is a device deployed in a wireless communication network to provide wireless communication functions to its associated STA.
- the access point AP can be used as the center of the communication system, and can be a base station, a router , gateway, repeater, communication server, switch or bridge and other communication equipment, wherein the base station may include various forms of macro base station, micro base station, relay station and so on.
- the devices mentioned above are collectively referred to as access points AP.
- BSS is used to describe a group of devices that can communicate with each other in wireless local area networks (WLAN).
- a WLAN may include multiple BSSs.
- Each BSS has a unique identification called Basic Service Set Identifier (BSSID).
- BSSID Basic Service Set Identifier
- one BSS may include one AP and multiple STAs associated with the AP.
- TXOP is the basic unit of wireless channel access.
- TXOP consists of an initial time and a maximum duration (TXOP limit).
- TXOP limit The station that obtains the TXOP can no longer compete for the channel again within the TXOP limit time, and continuously use the channel to transmit multiple data frames.
- TXOP can be obtained through competition or distribution by a hybrid coordinator (HC). Among them, the TXOP obtained through competition may be called an enhanced distributed channel access (EDCA) TXOP. The TXOP obtained via HC allocation may be referred to as a hybrid coordination function controlled channel access (HCCA) TXOP.
- HCCA hybrid coordination function controlled channel access
- a trigger frame In the process of uplink transmission or downlink transmission, a trigger frame needs to be used to realize information exchange between multi-user communications.
- FIG. 1 shows a schematic diagram of a frame structure of a trigger frame.
- the trigger frame includes: a frame control (frame control) field, a duration (duration) field, a receiving address (RA) field, a transmitting address (TA) field, and a common information (common info) field. field, a user info list field, a padding field, and a frame check sequence (FCS) field.
- frame control frame control
- RA receiving address
- TA transmitting address
- FCS frame check sequence
- the public information field contains public information that all sites need to read.
- the common information fields include: trigger frame type (trigger type) subfield, uplink length (UL length) subfield, more trigger frame (more TF) subfield, and carrier sense required (CS required) subfield field, uplink bandwidth (UL bandwidth) subfield, guard interval and HE long training sequence type (GI and HE-LTF type) subfield, mode (MU-MIMO HE-LTF mode) subfield, HE-LTF number and middle Code period (number of HE-LTF symbols and Midamble periodicity) subfield, uplink space-time block coding (UL STBC) subfield, LDPC extra symbol segment (LDPC extra symbol segment) subfield, AP transmit power (AP TX power) subfield field, Pre-FEC padding factor subfield, PE disambiguilty subfield, UL spatial reuse subfield, Doppler subfield field, uplink HE-SIG-A2 Reserved (UL HE-SIG-A2 Reserved) sub
- the trigger frame type subfield occupies 4 bits and is used to indicate the type of trigger frame.
- Table 1 For the correspondence between the value of the trigger frame type subfield and the type of the trigger frame, reference may be made to Table 1.
- the user information list field of the trigger frame may include a plurality of user information fields.
- the structure of the user information field may be as shown in Figure 3.
- User information fields may include: AID subfield, resource block allocation (RU allocation) field, uplink forward error correction coding type (UL FEC coding type) field, uplink modulation and coding strategy (UL HE-MCS) field, uplink dual carrier Modulation (UL DCM) field, spatial stream allocation/random access RU information (SS allocation/RA-RU information) field, uplink target received signal strength indication (UL target RSSI) field, reserved field, and trigger-based Frame type user information (trigger dependent user info) field.
- AID subfield resource block allocation (RU allocation) field, uplink forward error correction coding type (UL FEC coding type) field, uplink modulation and coding strategy (UL HE-MCS) field, uplink dual carrier Modulation (UL DCM) field, spatial stream allocation/random access RU information (SS allocation/RA-RU information) field, uplink target received signal strength
- 802.11ax adds four new PPDU types on the physical layer, namely: single user (signal user, SU) PPDU, extended range (extended range) PPDU, multi user (multi user, MU) PPDU, and trigger-based (TB) PPDU.
- the single-user PPDU is mainly used in a single-user scenario.
- Extended-range PPDUs are mainly used in single-user scenarios that are far away from APs, such as outdoor scenarios.
- Multi-user PPDU is mainly used in multi-user scenarios, and can transmit one or more times to one or more users at the same time.
- TB PPDUs are used to echo trigger frames.
- TB PPDUs are mainly transmitted in uplink orthogonal frequency division multiple access (OFDMA) or uplink MU-multiple in multiple out (MIMO) scenarios.
- OFDMA orthogonal frequency division multiple access
- MIMO multiple in multiple out
- the A-control field includes a control ID (control ID) field and a control information (control information) field.
- control ID control ID
- control information control information
- the control ID field occupies 4 bits. The number of bits occupied by the control information field varies according to the value of the control ID field.
- control information field in the A-control field is the BSR control field.
- the control information field in the A-control field is used as the CAS control field.
- the control information field in the A-control field is used as the TRS control field.
- the TRS control field in the prior art includes: an uplink data symbol (UL data symbols) field, a resource block allocation (RU allocation) field, an access point transmit power (AP TX power) field, a UL target RSSI field, UL HE-MCS field and reserved field.
- UL data symbols uplink data symbol
- RU allocation resource block allocation
- AP TX power access point transmit power
- UL target RSSI UL target RSSI field
- UL HE-MCS field reserved field.
- the bits occupied by the TRS control field are ordered from low to high, and can be numbered as B0-B25 bits.
- the UL data symbols field occupies B0-B4 bits
- the RU allocation field occupies B5-B12 bits
- the AP TX power field occupies B13-B17 bits
- the UL target RSSI field occupies B18-B22 bits
- the UL HE-MCS field occupies B23-B24 bits bits
- the reserved field occupies B25 bits.
- the current IEEE 802.11 next-generation Wireless Fidelity (WiFi) protocol Extremely high throughput (EHT) devices support multiple streams, multiple frequency bands (eg, 2.4GHz, 5GHz, and 6GHz bands), and On the same frequency band, the peak throughput can be improved through the cooperation of multiple channels, and the delay of service transmission can be reduced.
- the multiple frequency bands or multiple channels may be collectively referred to as multiple links.
- a multi-link device includes one or more subordinate sites, and the subordinate sites may be logical sites or physical sites.
- a multi-link device includes a subordinate station may be briefly described as “a multi-link device includes a station”.
- the affiliated station may be an access point (access point, AP) or a non-access point station (non-access point station, non-AP STA).
- access point access point
- non-access point station non-access point station
- a multi-link device whose subordinate site is an AP may be referred to as a multi-link AP, or an AP MLD, or a multi-link AP device; the subordinate site may be a multi-link device of a STA. It is called multi-link STA, or multi-link STA device, or STA MLD, or non-AP MLD.
- Multi-link devices can implement wireless communication following the 802.11 system protocol.
- the 802.11 system protocol may be the 802.11ax protocol, the 802.11be protocol, and the next-generation 802.11 protocol, and the embodiment of the present application is not limited thereto.
- Multilink devices can communicate with other devices.
- other devices may be multi-link devices or may not be multi-link devices.
- FIG. 5 is a schematic diagram of a communication scenario between an AP multi-link device and a STA multi-link device.
- an AP multi-link device can associate with multiple STA multi-link devices and single-link STAs.
- the AP multilink device 100 is associated with the STA multilink device 200 , the STA multilink device 300 , and the STA400 .
- multiple APs in the AP multi-link device work on multiple links respectively
- multiple STAs in the STA multi-link device work on multiple links respectively
- one STA in the STA multi-link device works on multiple links respectively.
- a single-link STA associates with an AP in the AP multi-link device on its working link.
- FIG. 6(a) and FIG. 6(b) are schematic structural diagrams of AP multi-link devices and STA multi-link devices participating in communication.
- the 802.11 standard focuses on the 802.11 Physical layer (PHY) and Media Access Control (MAC) layers in AP multi-link devices and STA multi-link devices (such as mobile phones and laptops).
- PHY Physical layer
- MAC Media Access Control
- the multiple APs included in the AP multi-link device are independent of each other at the low MAC (low MAC) layer and the PHY layer, and are also independent of each other at the high MAC (high MAC) layer.
- the multiple STAs included in the STA multi-link device are independent of each other at the low MAC layer and PHY layer, and are also independent of each other at the high MAC layer.
- multiple APs included in the AP multi-link device are independent of each other in the low MAC layer and the PHY layer, and share the high MAC (High MAC) layer.
- the multiple STAs included in the STA multi-link device are independent of each other at the Low MAC (Low MAC) layer and the PHY layer, and share the High MAC (High MAC) layer.
- the STA multi-link device may adopt a structure in which the high MAC layers are independent of each other, while the AP multi-link device adopts a structure shared by the high MAC layers.
- the STA multi-link device adopts a structure shared by the upper MAC layers, and the AP multi-link device adopts a structure where the higher MAC layers are independent of each other.
- both the high MAC layer and the low MAC layer may be implemented by a processor in a chip system of a multi-link device, and may also be implemented by different processing modules in a chip system respectively.
- the frequency band in which the multi-link device works may include, but is not limited to: sub 1GHz, 2.4GHz, 5GHz, 6GHz and high frequency 60GHz.
- a multi-link device may support simultaneous transmit and receive (STR) data, or a multi-link device may not support simultaneous transmission and reception of data.
- supporting the simultaneous sending and receiving of data means that: in the process of sending data on one link, the multi-link device can receive data on another link.
- Not supporting simultaneous transmission and reception of data means that a multi-link device cannot receive data on another link during the process of sending data on one link.
- the radio frame sent by the multi-link device AP on multiple links ends at the end
- the response frames sent by the STA multi-link device on multiple links are aligned at the start time and end time.
- a radio frame is required to control the length of the response frame to ensure that the response frames transmitted on different links can be aligned.
- multi-link scenario For the convenience of description, the "communication scenario of a multi-link device that does not support STR" is hereinafter referred to as “multi-link scenario” for short.
- the trigger frame defined in the current standard is not suitable for application in the multi-link scenario described above.
- the reason is:
- the existing trigger frame is designed for multiple users to simultaneously transmit uplink TB PPDUs. Therefore, the existing trigger frame needs to indicate MCS, RU, transmission power and other information, so the existing trigger frame will cause unnecessary system overhead.
- the existing trigger frame can only trigger TB PPDU.
- the radio frame used to control the length of the response frame only needs to be used to trigger a station to respond accordingly, so the station does not need to use TB PPDUs, but can use single-user PPDUs.
- Single-user PDDU has more advantages than TB PPDU: 1) Single-user PPDU can perform better channel protection. Because the third-party site can parse the content of the single-user PDDU, but cannot parse the content of the TB PPDU. 2) Single-user PPDU has less overhead in the frame header of the physical layer than TB PPDU.
- the radio frame #1 can trigger a station to respond in a single-user PPDU manner.
- the radio frame #1 includes an assigned time duration field.
- the set duration field is used to indicate the length of the single-user PPDU fed back by the station.
- radio frame #1 may be referred to as a single-user trigger frame. It should be understood that radio frame #1 may be aggregated or carried in downlink data.
- FIG. 7 shows an application example of radio frame #1 in a multi-link scenario.
- the transmitter sends data (data)1 and radio frame #1 to the receiver on link 1, and sends data2 and radio frame #1 to the receiver on link 2.
- the receiver sends a block ack (BA) frame 1 on link 1 and a BA frame 2 on the link according to the instruction of the single-user trigger frame.
- BA1 frame 1 and BA frame 2 are both aligned in the time domain.
- the radio frame #1 is represented by "Tr".
- IEEE802.11be standard also supports Scheduled P2P mechanism and CO-TDMA mechanism.
- FIG. 8 shows a schematic diagram of a Scheduled P2P scenario.
- the AP is associated with STA1; the AP and STA2 may be associated or not.
- a P2P link is established between STA1 and STA2.
- the AP may allocate time resources to STA1, so that STA1 communicates with STA2 through a P2P link in the allocated time resources.
- FIG. 9 shows a schematic diagram of a CO-TDMA scenario.
- AP1 is associated with STA1
- AP2 is associated with STA2.
- AP1 may allocate the time resource of the TXOP to AP2.
- AP2 can use this time resource to communicate with STA2.
- the present application provides a radio frame #2, which is used for allocating time resources.
- FIG. 10 is a schematic diagram illustrating that radio frame #2 is applied to a Scheduled P2P scenario.
- the AP sends a radio frame #2 to STA1, and the radio frame #2 allocates a time resource #1 for STA1.
- time resource #1 STA1 can send a PPDU to STA2, and STA2 can send an ACK frame of the PPDU to STA1.
- FIG. 11 is a schematic diagram of the application of radio frame #2 to a CO-TDMA scenario.
- AP1 is the owner of the TXOP.
- AP1 may send one radio frame #2 to AP2 to allocate one time resource #1 to AP2.
- time resource #1 AP2 communicates with one or more of its associated STAs.
- the above-mentioned radio frame #1 applied in the multi-link scenario is not common to the radio frame #2 applied in the Scheduled P2P scenario or the CO-TDMA scenario. Therefore, in order for the device to recognize whether one radio frame is the radio frame #1 or the radio frame #2, the radio frame #1 and the radio frame #2 need to have respective frame types, complicating the communication protocol.
- an embodiment of the present application provides a first frame.
- the first frame includes a first field and a second field.
- the first field is used to indicate the duration of the first time resource.
- the second field is used to indicate the usage of the first time resource.
- the above-mentioned time resource may have other names, such as time period, time domain resource, time, etc., which are not limited in this embodiment of the present application.
- the first field is different from the duration field further included in the first frame, and the duration field is used to reserve a period of use of the medium.
- the first field may have other names, such as an assigned time duration field; the second field may have other names, such as an assigned type field. This embodiment of the present application does not limit this.
- the purposes of the first-time resource include:
- Use 1 The first time resource is used to transmit a single-user PPDU.
- the duration of the first time resource may be the length of a single-user PPDU.
- the duration of the first time resource may be equal to the sum of the length of the single-user PPDU, the inter-frame space (SIFS), and the length of the traditional physical layer preamble.
- the usage of the first time resource is usage 1, it means that the first frame is used in a first type of scenario, and the first type of scenario includes but is not limited to: a multi-link scenario.
- Use 2 The first time resource is used for frame interaction.
- the start time of the first time resource is the time when the receiver receives the first frame.
- the purpose of the first time resource is purpose 2
- the first frame is applied to the second type of scene
- the second type of scene includes but is not limited to: Scheduled P2P scene or CO-TDMA scene.
- the second field is used to indicate the usage of the first time resource, including one of the following situations:
- the second field is used to indicate that the first time resource is used for transmitting a single-user PPDU.
- the second field is used to indicate that the first time resource is used for frame interaction.
- the second field occupies 1 bit
- the first preset value may be 0, and the second preset value may be 1.
- the second field is used to indicate the usage of the first time resource, including one of the following situations:
- the second field is used to indicate that the first time resource is used for the cooperation device to perform frame interaction.
- the cooperation device and the first device do not belong to the same BSS.
- the cooperative device may be a shared AP in a CO-TDMA scenario.
- the second field is used to indicate that the first time resource is used for the P2P station to perform frame interaction.
- the second field occupies 2 bits
- the first preset value is 0, the second preset value is 1, and the third preset value is 2.
- the design method of the first frame is described below. It should be understood that the first frame may adopt any one of the following design manners.
- the first frame is a new type of trigger frame. That is, the first frame includes a trigger frame type field whose value is a first value, and the first value is any one of 8-15.
- the first frame is an improvement based on the basic trigger frame. That is, the first frame includes a trigger frame type field with a value of 0. And, the B63 bit of the first frame is set to 1 to indicate that the basic trigger frame is the first frame.
- the B63 bit of the basic trigger frame in the current standard is a reserved bit.
- the first field and the second field may be located in the public information field or the user information field of the first frame.
- the first field and the second field are located in the common information field of the first frame
- the first field may be the UL length field
- the second field may multiplex other fields in the common information field except the UL length field.
- Design mode 3 The first trigger frame includes an A-control field using a new control type. That is, the first frame includes an A-control field, the value of the control identification field in the A-control field is a second value, and the second value is any one of 7-14.
- the first field and the second field may be located in the control information field of the A-control field.
- Design method 4 The first frame is based on improving the TRS control type in the existing A-control field.
- the first frame is a radio frame carrying the A-control field.
- the control ID field in the A-control field takes the value 0, and the A-control field includes the TRS control field.
- the B25 bit in the TRS control field is set to 1, and all or some of the bits in the B0-B24 bits in the TRS control field are used to carry the first field and the second field.
- a communication method provided by an embodiment of the present application includes the following steps:
- a first device generates a first frame.
- the first device may be an AP or a STA.
- the first device may determine the duration of the first time resource according to the actual situation. For example, the first device may determine the duration of the first time resource according to the cache status information reported by the second device.
- the first device sends the first frame to the second device.
- the second device receives the trigger frame sent by the first device.
- the second device parses the first frame.
- the second device uses the first time resource indicated by the first field according to the second field in the first frame.
- the second device determines, according to the second field in the first frame, that the first time resource is used to transmit a single-user PPDU. In this case, the second device sends a single-user PPDU to the first device.
- the second device determines, according to the second field in the first frame, that the first time resource is used for frame interaction. If the second device is an AP, the second device performs frame interaction with other devices associated with the second device within the first time resource according to the CO-TDMA mechanism. If the second device is a STA, the second device performs frame interaction with other P2P sites according to the Scheduled P2P mechanism.
- the first frame includes a first field and a second field, the first field is used to indicate the duration of the first time resource, and the second field can be used to indicate that the first time resource is used to transmit a single user PPDU, or the second field is used to indicate that the first time resource is used for frame interaction.
- the first frame can be applied to scenes with different uses of temporal resources, so that the first frame has generality.
- FIG. 13 is a flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 13, the communication method includes the following steps:
- the second device generates a first response frame.
- the first response frame includes a third field.
- the third field is used to instruct the second device to accept or reject the first time resource.
- the third field is used to indicate whether the second device accepts the first time resource.
- the third field when the third field is set to 0, the third field is used to indicate that the second device accepts the first time resource.
- the third field is used to instruct the second device to reject the first time resource.
- the third field when the third field is set to 1, the third field is used to indicate that the second device accepts the first time resource.
- the third field is used to instruct the second device to reject the first time resource.
- the second device sends a first response frame to the first device.
- the first device receives the first response frame sent by the second device.
- the first device can learn that the second device has correctly received the first frame.
- the first device may consider that the second device has not correctly received the first frame.
- the first device can know whether the second device has correctly received the first frame according to whether it has received the first response frame. On the other hand, the first device may determine whether the second device accepts the first time resource according to the third field in the first response frame, so that if the second device rejects the first time resource, the first device may again send the The first time resources are allocated to other devices to avoid waste of time resources.
- the second device may not feed back a response frame to the first device. , but directly interact with other devices in frames.
- the second device may use the embodiment shown in FIG. 14 to make the first device know that the second device accepts the first time resource allocated by the first device.
- a communication method provided by an embodiment of the present application includes the following steps:
- the second device sends the first radio frame within the first time resource.
- the receiving address of the above-mentioned wireless frame is not the MAC address of the first device.
- the frame format adopted by the first radio frame sent by the second device is a frame format that can be supported by the first device.
- the physical layer parameter used for sending the radio frame is a physical layer parameter that the first device can support.
- the physical layer parameters include, but are not limited to, the number of spatial streams and MCS.
- the MCS used for sending the radio frame is less than or equal to the first MCS, and the first MCS is the maximum MCS supported by the first device.
- the MCS used for sending the radio frame is less than or equal to the target MCS.
- the target MCS is the minimum value of the first MCS and the second MCS.
- the second MCS is the maximum MCS that the first device is expected to be able to resolve under current channel conditions.
- the first device receives the first radio frame sent by the second device within the first time resource.
- the first device can parse the the radio frame, so as to know that the second device accepts the first time resource.
- the first device may consider that the second device has not correctly received the first frame, or the first device may consider that the second device rejects the first frame.
- radio frames such as the second radio frame, the third radio frame, etc.
- the frame format used by other radio frames may not be a frame format supported by the first device
- the physical layer parameters used in sending other radio frames may not be the physical layer parameters supported by the first device.
- RDG reverse direction grant
- the RDG initiator initiator
- the RDG responder can transfer the remaining time of the TXOP held by the RDG initiator to the RDG responder (responder).
- the RDG responder uses single-user PPDUs to communicate with the RDG initiator; alternatively, the RDG responder uses downstream multi-user PPDUs or trigger frames to communicate with multiple devices, which must include the RDG initiator.
- the sender can send RDG indication information to the receiver, so that the receiver can know whether the sender transfers the remaining time of the TXOP held by the sender to the receiver. It should be understood that when the sender transfers the remaining time of the TXOP held by it to the receiver, the sender is the RDG initiator, and the receiver is the RDG responder.
- the RDG indication information is carried in the CAS control field in the A-control field.
- the existing CAS control field includes an AC constraint (constraint) field, an RDG/more PPDU field, a parameterized spatial reuse transmission (PSRT) PPDU field, and 5 reserved bits.
- the AC constraint field, the RDG/more PPDU field, and the PSRT PPDU field all occupy 1 bit.
- the RDG/more PPDU field is used as RDG indication information. Specifically, when the RDG/more PPDU field is set to 1, it means that the sender transfers the remaining time of the TXOP held by it to the receiver. When the RDG/more PPDU field is set to 0, it means that the sender does not transfer the remaining time of the TXOP it holds to the receiver.
- the AC constraint field is used to indicate whether there is a restriction on the type of data frame sent by the RDG responder within the remaining time of the TXOP. Specifically, when the AC constraint field is set to 0, it means that there is no restriction on the type of data frame sent by the RDG responder within the remaining time of the TXOP. When the AC constraint field is set to 1, it means that the type of data frame sent by the RDG responder in the remaining time of the TXOP is limited.
- the type of data frame sent by the RDG responder is limited, specifically, the RDG responder can only send data of the main access category (AC) corresponding to the TXOP.
- AC main access category
- the PSRT PPDU field is used to indicate that the current PPDU is a spatial multiplexing PPDU that is sent under the conditions of parameter spatial multiplexing transmission.
- IEEE802.11be standard may also support Scheduled P2P mechanism and CO-TDMA mechanism.
- the first AP may also need to transfer the remaining time of the TXOP held by it to the STA associated with the first AP.
- the first AP may also need to transfer the remaining time of the TXOP it holds to the second AP.
- the above RDG mechanism cannot be applied to other application scenarios (such as Scheduled P2P scenarios or CO-TDMA scenarios). communication.
- the device that accepts the remaining time of the TXOP communicates with other devices, and the other devices do not include the holder of the TXOP.
- the embodiment of the present application provides a second frame.
- the second frame includes an A-control field, the A-control field includes a CAS control field, and the CAS control field includes a fourth field and a fifth field.
- the second frame is a data frame, such as a quality of service (quality of service, QoS) frame or a QoS null (null) frame.
- QoS quality of service
- QoS null null
- the fourth field is used to indicate whether to transfer the remaining time of the TXOP to the second device, so that the second device communicates with the first device during the remaining time of the TXOP.
- the fourth field is used to indicate whether to transfer the remaining time of the TXOP to the RDG responder.
- the fourth field may have other names, such as the RDG/more PPDU field.
- the fourth field when the fourth field is set to a fourth preset value, the fourth field is used to indicate that the remaining time of the TXOP is transferred to the second device, so that the second device can perform a communication with the first device within the remaining time of the TXOP. communication.
- the fourth field is set to the fifth preset value, the fourth field is used to indicate that the remaining time of the TXOP is not to be transferred to the second device.
- the fourth preset value is different from the fifth preset value.
- the communication between the second device and the first device during the remaining time of the TXOP may be: the second device uses a single-user PPDU to communicate with the first device during the remaining time of the TXOP; Use downlink multi-user PPDU or trigger frame to communicate with multiple devices including the first device within the remaining time of the device.
- This embodiment of the present application does not limit the values of the fourth preset value and the fifth preset value.
- the fourth preset value is 1, and the fifth preset value is 0.
- the fifth field is used to indicate whether to transfer the remaining time of the TXOP to the second device, so that the second device communicates with the third device within the remaining time of the TXOP, and the third device does not include the first device.
- the fifth field is used to indicate whether to transfer the remaining time of the TXOP to the cooperating device or the P2P STA.
- the fifth field when the fifth field is set to the fourth preset value, the fifth field is used to indicate that the remaining time of the TXOP is transferred to the second device, so that the second device and the third device are in the remaining time of the TXOP. communication.
- the fifth field is used to indicate that the remaining time of the TXOP is not to be transferred to the second device.
- the third device may be one or more.
- the fifth field is used to indicate that the remaining time of the TXOP is transferred to the second device so that the second device communicates with the third device during the remaining time of the TXOP, the second device will not communicate with the third device during the remaining time of the TXOP.
- the first device communicates.
- the fifth field may have other names, such as a time sharing field.
- the fourth field and the fifth field cannot be set to the fourth preset value at the same time.
- the second frame further includes a duration field, and the duration field may be used to determine the duration of the remaining time of the TXOP.
- the CAS control field further includes a sixth field, where the sixth field is used to indicate whether the type of the data frame sent by the second device within the remaining time of the TXOP is limited. Specifically, when the sixth field is set to 0, the sixth field is used to indicate that the type of the data frame sent by the second device within the remaining time of the TXOP is not limited. When the sixth field is set to 1, the sixth field is used to indicate that the type of the data frame sent by the second device within the remaining time of the TXOP is limited.
- the sixth field may have other names, such as the AC constraint field.
- the CAS control field further includes a seventh field.
- the seventh field is used to indicate whether the second device is allowed to transfer the remaining time of the TXOP to other devices. Specifically, when the seventh field is set to the sixth preset value, the seventh field is used to indicate that the second device is not allowed to transfer the remaining time of the TXOP to other devices. When the seventh field is set to the seventh preset value, the seventh field is used to indicate that the second device is allowed to transfer the remaining time of the TXOP to other devices.
- the seventh field may have other names, such as the Further grant field.
- the CAS control field may also include other fields, such as the PSRT PPDU field.
- FIG. 16 shows a schematic diagram of a CAS control field in a second frame provided by an embodiment of the present application.
- the CAS control field may include a fourth field, a fifth field, a sixth field, a seventh field, a PSRT PPDU field, and 3 reserved bits.
- the fourth field, the fifth field, the sixth field, the seventh field, and the PSRT PPDU field all occupy 1 bit.
- a communication method provided by an embodiment of the present application includes the following steps:
- the first device generates a second frame.
- the first device sends the second frame to the second device.
- the second device receives the second frame sent by the first device.
- the second device parses the second frame.
- the second device When the fourth field in the CAS control field of the second frame is set to the fourth preset value, the second device communicates with the first device within the remaining time of the TXOP. Or, when the fifth field in the CAS control field of the second frame is set to the fifth preset value, the second device communicates with the third device within the remaining time of the TXOP.
- the third device may be determined according to a specific application scenario.
- the third device may be a site associated with the second device.
- the third device may be a site that establishes a P2P link with the second device.
- the second frame carries a CAS control field
- the CAS control field includes a fourth field and a fifth field.
- the fourth field is used to indicate that the remaining time of the TXOP is transferred to the second device, so that the second device communicates with the first device during the remaining time of the TXOP.
- the fifth field is used to indicate whether to transfer the remaining time of the TXOP to the second device, so that the second device communicates with the third device within the remaining time of the TXOP, and the third device does not include the first device.
- the second frame can be applied to application scenarios with different arrangements for the remaining time of the TXOP, such as a scenario applying the RDG mechanism, a Scheduled P2P scenario, or a CO-TDMA scenario.
- the second frame has generality.
- the remaining time of the TXOP transferred by the first device to the second device through the second frame may be simply referred to as the second time resource.
- the remaining time of the second time resource may be simply referred to as the third time resource.
- the second device may return the third time resource to the first device through any one of the following operations.
- the second device sends the second frame carrying the CAS control field to the first device, and the fifth field in the CAS control field is set to the fifth preset value.
- Operation 2 The second device sends a radio frame that does not carry the CAS control field to the first device.
- FIG. 18 is a flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 18, the communication method includes the following steps:
- the second device generates a second response frame.
- the second response frame is used to respond to the second frame.
- the second response frame includes an eighth field. The eighth field is used to indicate whether the second device accepts the remaining time of the TXOP.
- the eighth field when the eighth field is set to 0, the eighth field is used to indicate the remaining time for the second device to accept the TXOP.
- the eighth field when the eighth field is set to 1, the eighth field is used to indicate the remaining time for the second device to reject the TXOP.
- the eighth field when the eighth field is set to 1, the eighth field is used to indicate the remaining time for the second device to accept the TXOP.
- the eighth field when the eighth field is set to 0, the eighth field is used to indicate the remaining time for the second device to reject the TXOP.
- the second device sends a second response frame to the first device.
- the first device receives the second response frame sent by the second device.
- the first device can know whether the second device has correctly received the second frame according to whether the second response frame is received. On the other hand, the first device can determine whether the second device accepts the remaining time of the TXOP according to the eighth field in the second response frame, so that in the case that the second device rejects the remaining time of the TXOP, the first device can again The remaining time of TXOP is allocated to other devices to avoid waste of time resources.
- the second device may not feed back a response frame to the first device, but directly communicate with the first device. Frame interaction with other devices.
- the second device adopts the embodiment shown in FIG. 19 to make the first device know the remaining time for the second device to accept the TXOP allocated by the first device.
- the second device sends the first radio frame during the remaining time of the TXOP.
- the receiving address of the above-mentioned wireless frame is not the MAC address of the first device.
- the frame format adopted by the first radio frame sent by the second device is a frame format that can be supported by the first device.
- the physical layer parameter used for sending the radio frame is a physical layer parameter that the first device can support.
- the physical layer parameters include, but are not limited to, the number of spatial streams and MCS.
- the MCS used for sending the radio frame is less than or equal to the first MCS, and the first MCS is the maximum MCS supported by the first device.
- the first device receives the first radio frame sent by the second device within the remaining time of the TXOP.
- the first device can parse the the radio frame, so as to know the remaining time for the second device to accept the TXOP.
- the first device may consider that the second device has not correctly received the second frame, or the first device may consider that the second device rejects the TXOP remaining time. In this case, the first device can transfer the remaining time of the TXOP to other devices.
- radio frames such as the second radio frame, the third radio frame, etc.
- the frame format used by other radio frames may not be a frame format supported by the first device
- the physical layer parameters used in sending other radio frames may not be the physical layer parameters supported by the first device.
- the second device needs to report cache status information to the first device in advance, so as to assist the first device in allocating time resources to the second device.
- a communication method provided by an embodiment of the present application includes the following steps:
- the second device generates cache state information.
- the cache status information is used to indicate the amount of cached data.
- the buffered data volume may be one or more of the following: the total uplink buffered data volume, the total downlink buffered data volume, or the sum of the total uplink buffered data volume and the total downlink buffered data volume.
- the total uplink buffered data volume is the sum of the data volumes to be sent by each target site to the second device.
- the total downlink buffered data volume is the sum of the data volumes to be sent by the second device to each target site.
- the target site is one of the following:
- the target site is any site associated with the second device.
- the selection of the associated site is not limited by location.
- the target site is a site associated with the second device, and the target site is a site that receives the capability indication information.
- the capability indication information is used to instruct the station to participate in CO-TDMA.
- the target site is a site associated with the second device, and the target site meets the selection condition of the second device.
- the selection condition of the second device includes conditions in terms of location, channel state information, and the like.
- the selection condition of the second device in terms of location is: the distance between the target site and the second device is less than or equal to the first preset value.
- the amount of buffered data may be the sum of the amount of buffered data on K P2P links established by the second device, and K is a positive integer.
- the amount of buffered data may be the amount of buffered data on a P2P link, and the buffer status information may also include an identifier of the P2P link.
- the amount of cached data indicated by the above cached status information is all ACs or The sum of the cached data volumes for all TIDs.
- the cache status information is used to indicate the amount of cached data, which may include the following implementations :
- the cache status information is used to indicate the amount of cached data corresponding to one or more ACs.
- the cache status information may be used to indicate the amount of cached data corresponding to one or more TIDs.
- the buffer status information may include a plurality of cells, each cell is used to carry the identifier of an AC and the buffered data volume corresponding to the AC; or, each cell is used to carry the identifier of a TID and the TID. The corresponding amount of cached data.
- the cache status information is used to indicate the amount of cached data corresponding to the primary AC.
- Implementation Mode 3 The cache status information is used to indicate the amount of cached data corresponding to the AC combination. Or, the buffer status information is used to indicate the buffer data amount corresponding to the TID combination.
- the AC combination includes one or more ACs.
- the buffered data volume corresponding to the AC combination is the sum of the buffered data volumes corresponding to each AC in the AC combination.
- AC combination 1 includes AC1 and AC2
- the buffered data volume corresponding to AC combination 1 is the sum of the buffered data volume corresponding to AC1 and the buffered data volume corresponding to AC2.
- a TID combination includes one or more TIDs.
- the buffered data volume corresponding to the TID combination is the sum of the buffered data volume corresponding to each TID in the TID combination.
- TID combination 1 includes TID1 and TID2, and the buffered data volume corresponding to TID combination 1 is the sum of the buffered data volume corresponding to TID1 and the buffered data volume corresponding to TID2.
- the second device sends cache status information to the first device.
- the first device receives the cache status information sent by the second device.
- the buffer status information may be carried in the radio frame.
- the radio frame includes an A-control field, and the A-control field includes buffer status information.
- the value of the control ID field in the A-control field is 3, and the cache status report field in the A-control field is equivalent to the cache status information.
- the radio frame carrying the buffer status information is a public action (Public Action) frame.
- Public Action a public action (Public Action) frame.
- the buffer status information may adopt the frame structure shown in FIG. 21 or FIG. 22 .
- the buffer status information may include a feedback type (Report Type) field, a scaling factor (scaling factor) field, a total downlink buffered data volume field, an uplink total buffered data volume field, and reserved bits.
- Report Type Report Type
- scaling factor scaling factor
- the zoom factor field is used to indicate the zoom factor. It should be understood that, in the frame structure shown in FIG. 21 , the product of the scaling factor indicated by the scaling factor field and the data amount indicated by the total downlink buffered data volume field is the total downlink buffered data volume. The product of the scaling factor indicated by the scaling factor field and the data amount indicated by the total uplink buffered data volume field is the total uplink buffered data volume. In this way, by setting the scaling factor field in the cache status information, the indication of the data amount within a larger value range can be implemented with a smaller number of bits.
- the zoom factor is an optional field. If the buffer status information does not include the scaling factor field, the total downlink buffered data volume field is used to indicate the total downlink buffered data volume, and the uplink total buffered data volume field is used to indicate the uplink total buffered data volume.
- the field of total downlink buffered data volume may also have other names, such as the BSS downlink queue size (queue size BSS DL) field.
- the upstream total buffered data volume field may also have other names, such as the BSS upstream queue size (queue size BSS UL) field.
- the buffer status information may include: a feedback type field, a scaling factor field, a total buffered data amount field, and reserved bits.
- the product of the scaling factor indicated by the scaling factor field and the data volume indicated by the total buffered data volume field is the sum of the total upstream buffered data volume and the total downstream buffered data volume.
- the zoom factor is an optional field. If the buffer status information does not include the scaling factor field, the total buffered data volume field is used to indicate the sum of the uplink total buffered data volume and the downlink total buffered data volume.
- the total cache data volume field can have other names, such as the queue size BSS DL+UL field.
- the cache status information may adopt the frame structure shown in FIG. 23 or FIG. 24 .
- the cache status information includes a report type field, a scaling factor field, a P2P cache data amount field, and reserved bits.
- the product of the scaling factor indicated by the scaling factor field and the data amount indicated by the P2P buffered data volume field is the sum of buffered data on the K P2P links established by the second device.
- the zoom factor is an optional field. If the buffer status information does not include the scaling factor field, the P2P buffer data amount field is used to indicate the sum of buffer data on the K P2P links established by the second device.
- the cache status information includes a report type field, a scaling factor field, a P2P cache data amount field, a P2P side field, and reserved bits.
- the P2P side field is used for the identification of the P2P link.
- the product between the scaling factor indicated by the scaling factor field and the data amount indicated by the P2P buffered data amount field is the sum of the buffered data on the P2P link indicated by the P2P side field.
- the zoom factor is an optional field.
- reserved bits are optional. That is, the buffer status information may not include reserved bits.
- the feedback type field is used to indicate a feedback type, and the feedback type includes a first feedback type and a second feedback type.
- the first feedback type is used to describe that the cache state information is used in a multi-AP cooperation scenario.
- the second feedback type is used to illustrate that the cache status information is used in a P2P scenario.
- the multi-AP cooperation scenario includes a CO-TDMA scenario.
- the first feedback type may be recorded as multi-AP, and the second feedback type may be recorded as P2P.
- the feedback type field is an optional field.
- the first device may learn the feedback type of the buffer status information in any one of the following manners.
- the first device determines the feedback type of the cache status information according to the role of the second device. For example, when the second device is an AP, the first device may determine that the feedback type of the buffer status information is the first feedback type. When the second device is a STA, the first device may determine that the feedback type of the buffer status information is the second feedback type.
- the first device may carry the frame type of the radio frame of the buffer status information to determine the feedback type of the buffer status information. For example, when the frame type of the radio frame carrying the buffer status information is the first frame type, the first device may determine that the feedback type of the buffer status information is the first feedback type. When the frame type of the radio frame carrying the buffer status information is the second frame type, the first device may determine that the feedback type of the buffer status information is the second feedback type.
- the second device sends cache status information to the first device, so that the first device knows the amount of cached data related to the second device. Furthermore, the first device can reasonably allocate time resources to the second device, so that the buffered data related to the second device can be transmitted within the allocated time resources.
- FIG. 20 may be combined with the embodiment shown in the foregoing FIG. 12 or FIG. 17 .
- the communication apparatus includes corresponding hardware structures and/or software modules for executing each function.
- the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
- the device may be divided into functional modules according to the foregoing method examples.
- each functional module may be divided corresponding to each function, or two or more functions may be integrated into one functional module.
- the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
- the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and other division methods may be used in actual implementation. The following is an example of dividing each function module corresponding to each function to illustrate:
- a communication device provided by an embodiment of the present application includes: a processing module 101 and a communication module 102 .
- the processing module 101 is configured to perform step S101 in FIG. 12 and/or step S401 in FIG. 17 .
- the communication module 102 is configured to perform step S102 in FIG. 12 , step S202 in FIG. 13 , step S302 in FIG. 14 , step S402 in FIG. 17 , step S502 in FIG. 18 , step S602 in FIG. 19 , and/ or step S702 in FIG. 20 .
- the processing module 101 is configured to execute step S103 in FIG. 12 , step S201 in FIG. 13 , step S403 in FIG. 17 , and steps in FIG. 18 S501, and/or step S701 in FIG. 20 .
- the communication module 102 is configured to perform step S102 in FIG. 12 , step S202 in FIG. 13 , step S301 in FIG. 14 , step S402 in FIG. 17 , step S502 in FIG. 18 , step S601 in FIG. 19 , and/ or step S702 in FIG. 20 .
- FIG. 26 is a structural diagram of a possible product form of the communication device according to the embodiment of the present application.
- the communication apparatus described in this embodiment of the present application may be the above-mentioned first device, where the first device includes a processor 201 and a transceiver 202 .
- the communication device further includes a storage medium 203 .
- the processor 201 is configured to execute step S101 in FIG. 12 and/or step S401 in FIG. 17 .
- the transceiver 202 is configured to perform step S102 in FIG. 12 , step S202 in FIG. 13 , step S302 in FIG. 14 , step S402 in FIG. 17 , step S502 in FIG. 18 , step S602 in FIG. 19 , and/or or step S702 in FIG. 20 .
- the communication apparatus described in this embodiment of the present application may be the above-mentioned second device, where the second device includes a processor 201 and a transceiver 202 .
- the communication device further includes a storage medium 203 .
- the processor 201 is configured to execute step S103 in FIG. 12 , step S201 in FIG. 13 , step S403 in FIG. 17 , step S501 in FIG. 18 , and/or step S701 in FIG. 20 .
- the transceiver 202 is configured to perform step S102 in FIG. 12 , step S202 in FIG. 13 , step S301 in FIG. 14 , step S402 in FIG. 17 , step S502 in FIG. 18 , step S601 in FIG. 19 , and/ or step S702 in FIG. 20 .
- the communication device described in the embodiments of the present application may also be implemented by a chip.
- the chip includes: a processing circuit 201 and a transceiver pin 202 .
- the chip may further include a storage medium 203 .
- the communication apparatus described in the embodiments of the present application may also be implemented by using the following circuits or devices: one or more field programmable gate arrays (FPGA), programmable logic A programmable logic device (PLD), controller, state machine, gate logic, discrete hardware components, any other suitable circuit, or any combination of circuits capable of performing the various functions described throughout this application.
- FPGA field programmable gate arrays
- PLD programmable logic A programmable logic device
- state machine gate logic
- discrete hardware components any other suitable circuit, or any combination of circuits capable of performing the various functions described throughout this application.
- an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, causes the computer to execute the communication methods in the foregoing method embodiments. .
- the embodiments of the present application further provide a computer program product including computer instructions, when the computer instructions are executed on the computer, the computer can execute the communication method in the foregoing method embodiments.
- the computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server Or the data center transmits to another website site, computer, server or data center by wired (eg coaxial cable, optical fiber, digital subscriber line) or wireless (eg infrared, wireless, microwave, etc.).
- the computer-readable storage medium can be any available medium that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium.
- the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media, or semiconductor media (eg, solid state drives), and the like.
- the apparatuses and methods disclosed in the several embodiments provided in this application may be implemented in other manners.
- the device embodiments described above are only illustrative.
- the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods.
- multiple units or components may be Incorporation may either be integrated into another device, or some features may be omitted, or not implemented.
- the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or may be distributed to multiple different places . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
- the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
- the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium.
- the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, which are stored in a storage medium , including several instructions to make a device (may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.
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Abstract
Description
Claims (31)
- 一种通信方法,其特征在于,所述方法包括:第一设备生成第一帧,所述第一帧包括第一字段和第二字段,所述第一字段用于指示第一时间资源的时长,所述第二字段用于确定所述第一时间资源的用途,所述第一时间资源的用途包括:所述第一时间资源用于传输一个单用户物理层协议数据单元PPDU,或者所述第一时间资源用于进行帧交互;所述第一设备向所述第二设备发送所述第一帧。
- 根据权利要求1所述的方法,其特征在于,当所述第一时间资源用于传输一个单用户PPDU时,所述单用户PPDU的时长等于所述第一时间资源的时长。
- 根据权利要求1或2所述的方法,其特征在于,所述第二字段用于确定所述第一时间资源的用途,包括以下情形:当所述第二字段设置为第一预设值时,所述第二字段用于确定所述第一时间资源用于传输一个单用户PPDU;或者,当所述第二字段设置为第二预设值时,所述第二字段用于确定所述第一时间资源用于进行帧交互。
- 根据权利要求1或2所述的方法,其特征在于,所述第二字段用于确定所述第一时间资源的用途,包括以下情形:当所述第二字段设置为第一预设值时,所述第二字段用于确定所述第一时间资源用于传输一个单用户PPDU;或者,当所述第二字段设置为第二预设值时,所述第二字段用于确定所述第一时间资源用于协作设备进行帧交互,所述协作设备与所述第一设备不属于同一个基本服务集;或者,当所述第二字段设置为第三预设值时,所述第三字段用于确定所述第一时间资源用于端对端站点进行帧交互。
- 根据权利要求1至4任一项所述的方法,其特征在于,所述第一帧还包括触发帧类型字段,所述触发帧类型字段的取值为8-15中的任意一个。
- 根据权利要求1至4任一项所述的方法,其特征在于,所述第一帧为基本类型basic触发帧,所述basic触发帧中的B63比特设置为1。
- 根据权利要求5或6所述的方法,其特征在于,所述第一字段和所述第二字段位于所述第一帧的公共信息字段或者用户信息字段中。
- 根据权利要求1至4任一项所述的方法,其特征在于,所述第一帧还包括A-控制control字段,所述A-control字段包括控制标识字段和控制信息字段,所述控制标识字段的取值为7-14中的任意一个,所述第一字段和所述第二字段位于所述控制信息字段中。
- 根据权利要求1至4任一项所述的方法,其特征在于,所述第一帧还包括使用触发响应调度类型TRS的A-控制control字段,所述A-control字段包括TRS control字段,所述TRS control字段包括所述第一字段和所述第二字段,所述TRS control字段中的预留比特设置为1。
- 根据权利要求1至9任一项所述的方法,其特征在于,所述方法还包括:所述第一设备接收所述第二设备发送的响应帧,所述响应帧包括第三字段,所述第三字段用于指示所述第二设备是否接受所述第一时间资源。
- 根据权利要求1至9任一项所述的方法,其特征在于,所述方法还包括:所述第一设备接收所述第二设备在所述第一时间资源发送的第一个无线帧,发送所述无线帧使用的调制与编码策略MCS小于或等于所述第一设备所支持的最大MCS。
- 根据权利要求1至11任一项所述的方法,其特征在于,所述方法还包括:所述第一设备接收所述第二设备发送的缓存状态信息,所述缓存状态信息用于指示缓存数据量。
- 根据权利要求12所述的方法,其特征在于,当所述第二设备为协作设备时,所述缓存数据量包括以下一项或多项:上行总缓存数据量、下行总缓存数据量、或上行总缓存数据量和下行总缓存数据量之和;其中,所述上行总缓存数据量为所述第二设备所关联的一个或多个站点的上行缓存数据量之和,所述下行总缓存数据量为所述第二设备所关联的一个或多个站点的下缓存数据量之和。
- 根据权利要求12所述的方法,其特征在于,当所述第二设备为端对端站点时,所述缓存数据量为所述第二设备所建立的一个或多个P2P链路上的缓存数据量之和。
- 一种通信方法,其特征在于,所述方法包括:第二设备接收第一设备发送的接收第一帧,所述第一帧包括第一字段和第二字段,所述第一字段用于指示第一时间资源的时长,所述第二字段用于确定所述第一时间资源的用途,所述第一时间资源的用途包括:所述第一时间资源用于传输一个单用户物理层协议数据单元PPDU,或者所述第一时间资源用于进行帧交互;所述第二设备解析所述第一帧。
- 根据权利要求15所述的方法,其特征在于,当所述第一时间资源用于传输一个单用户PPDU时,所述单用户PPDU的时长等于所述第一时间资源的时长。
- 根据权利要求15或16所述的方法,其特征在于,所述第二字段用于确定所述第一时间资源的用途,包括以下情形:当所述第二字段设置为第一预设值时,所述第二字段用于确定所述第一时间资源用于传输一个单用户PPDU;或者,当所述第二字段设置为第二预设值时,所述第二字段用于确定所述第一时间资源用于进行帧交互。
- 根据权利要求15或16所述的方法,其特征在于,所述第二字段用于确定所述第一时间资源的用途,包括以下情形:当所述第二字段设置为第一预设值时,所述第二字段用于确定所述第一时间资源用于传输一个单用户PPDU;或者,当所述第二字段设置为第二预设值时,所述第二字段用于确定所述第一时间资源用于协作设备进行帧交互,所述协作设备与所述第一设备不属于同一个基本服务集;或者,当所述第二字段设置为第三预设值时,所述第三字段用于确定所述第一时间资源用于端对端站点进行帧交互。
- 根据权利要求15至18任一项所述的方法,其特征在于,所述第一帧还包括触发帧类型字段,所述触发帧类型字段的取值为8-15中的任意一个。
- 根据权利要求15至18任一项所述的方法,其特征在于,所述第一帧为基本类型basic触发帧,所述basic触发帧中的B63比特设置为1。
- 根据权利要求19或20所述的方法,其特征在于,所述第一字段和所述第二字段位于所述第一帧的公共信息字段或者用户信息字段中。
- 根据权利要求15至18任一项所述的方法,其特征在于,所述第一帧还包括A-控制control字段,所述A-control字段包括控制标识字段和控制信息字段,所述控制标识字段的取值为7-14中的任意一个,所述第一字段和所述第二字段位于所述控制信息字段中。
- 根据权利要求15至18任一项所述的方法,其特征在于,所述第一帧还包括使用触发响应调度类型TRS的A-控制control字段,所述A-control字段包括TRS control字段,所述TRS control字段包括所述第一字段和所述第二字段,所述TRS control字段中的预留比特设置为1。
- 根据权利要求15至23任一项所述的方法,其特征在于,所述方法还包括:所述第二设备向所述第一设备发送响应帧,所述响应帧包括第三字段,所述第三字段用于指示所述第二设备是否接受所述第一时间资源。
- 根据权利要求15至23任一项所述的方法,其特征在于,所述方法还包括:所述第二设备在所述第一时间资源发送第一个无线帧,发送所述无线帧使用的MCS小于或等于所述第一设备所支持的最大MCS。
- 根据权利要求15至25任一项所述的方法,其特征在于,所述方法还包括:所述第二设备向所述第一设备发送的缓存状态信息,所述缓存状态信息用于指示缓存数据量。
- 根据权利要求26所述的方法,其特征在于,当所述第二设备为协作设备时,所述缓存数据量包括以下一项或多项:上行总缓存数据量、下行总缓存数据量、或上行总缓存数据量和下行总缓存数据量之和;其中,所述上行总缓存数据量为所述第二设备所关联的一个或多个站点的上行缓存数据量之和,所述下行总缓存数据量为所述第二设备所关联的一个或多个站点的下缓存数据量之和。
- 根据权利要求26所述的方法,其特征在于,当所述第二设备为端对端站点时,所述缓存数据量为所述第二设备所建立的一个或多个P2P链路上的缓存数据量之和。
- 一种通信装置,其特征在于,所述通信装置包括用于执行权利要求1至28中任一项所涉及的方法中的各个步骤的单元。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储计算机指令,当所述计算机指令在计算机上运行时,使得所述计算机执行权利要求1至28任一项所述的方法。
- 一种芯片,其特征在于,所述芯片包括处理单元和收发管脚;所述处理单元用于执行权利要求1至28中任一项所涉及的方法中的处理操作,所述收发管脚用于执行权利要求1至28中任一项所涉及的方法中的通信操作。
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