Aggregate MAC service data unit (A-MSDU) and aggregate MAC protocol data unit (A-MPDU) of next generation V2X (NGV) station (STA)
In an IEEE 802.11bc wireless system, aggregated data frames are communicated between first and second STA devices by configuring the first STA device to assemble and transmit an A-MPDU frame having multiple A-MPDU subframes characterized by a fixed MPDU start spacing parameter and a fixed maximal MPDU length parameter, where the first STA device is configured with the fixed MPDU start spacing parameter and the fixed maximal MPDU length parameter without negotiating association request and response messages, and by configuring the second STA device to assemble and transmit a BA message comprising a BA bitmap identifying the one or more of the multiple A-MPDU subframes which are not successfully received by the second STA device, where the BA bitmap has a size characterized by a fixed buffer size parameter which is configured at the second STA device without negotiating add BA request (ADDBA Request) request and response messages.
1. A method for transmitting one or more aggregated data frames from a first station (STA) device to a second STA device in a wireless personal area network in accordance with IEEE 802.11bc protocol, comprising:
assembling and transmitting, by the first STA device, a first aggregated MAC protocol data unit (A-MPDU) frame comprising a plurality of A-MPDU subframes characterized by a fixed MPDU start spacing parameter and a fixed maximal MPDU length parameter, where the first STA device is configured with the fixed MPDU Start Spacing parameter and the fixed maximal MPDU length parameter, and without negotiating association request and response messages with the second STA device; and
receiving and processing, by the first STA device, a first block acknowledgement (BA) message that is assembled and transmitted by the second STA device,
where the BA message comprises a BA bitmap identifying one or more of the plurality of A-MPDU subframes which are not successfully received by the second STA device, and
where the BA bitmap has a size characterized by a fixed buffer size parameter which is configured at the second STA device without negotiating add BArequest (ADDBA Request) request and response messages with the first STA device where the first and second STA devices each comprise Next Generation Vehicle-to-Everything (NGV) STA devices.
2. The method of claim 1 , where the fixed MPDU start spacing parameter has a predetermined value of 7991 octets.
3. The method of claim 1 , where the fixed maximal MPDU length parameter has a predetermined value of 2 μs.
4. The method of claim 1 , where the fixed buffer size parameter has a predetermined value of 32 MPDUs.
5. The method of claim 1 , where no BA negotiation is required between the first and second STA devices before exchanging BA message therebetween.
6. The method of claim 1 , where each of the plurality of A-MPDU subframes comprises a plurality of aggregated MAC service data units having a combined length that is less than or equal to the fixed maximal MPDU length parameter.
7. A method for receiving one or more aggregated data frames at a first station (STA) device that are transmitted by a second STA device in a wireless personal area network in accordance with IEEE 802.11bc protocol, comprising:
receiving and processing, by the first STA device, a first aggregated MAC protocol data unit (A-MPDU) frame that is assembled and transmitted by the second STA device, where the first A-MPDU frame comprises a plurality of A-MPDU subframes characterized by a fixed MPDU start spacing parameter and a fixed maximal MPDU length parameter, where the first and second STA devices are each configured with the fixed MPDU start spacing parameter and the fixed maximal MPDU length parameter, and without negotiating association request and response messages between the first and second STA devices;
identifying, by the first STA device, one or more of the plurality of A-MPDU subframes in the first A-MPDU frame which are not successfully received by the first STA device; and
assembling and transmitting, by the first STA device, a first block acknowledgement (BA) message comprising a BA bitmap identifying the one or more of the plurality of A-MPDU subframes which are not successfully received by the first STA device, where the BA bitmap has a size characterized by a fixed buffer size parameter which is configured at the first STA device without negotiating add BArequest (ADDBA Request) request and response messages between the first and second STA devices where the first and second STA devices each comprise Next Generation Vehicle-to-Everything (NGV) STA devices.
8. The method of claim 7 , where the fixed MPDU start spacing parameter has a predetermined value of 7991 octets.
9. The method of claim 7 , where the fixed maximal MPDU length parameter has a predetermined value of 2 μs.
10. The method of claim 7 , where the fixed buffer size parameter has a predetermined value of 32 MPDUs.
11. The method of claim 7 , where no BA negotiation is required between the first and second STA devices before exchanging BA message therebetween.
12. The method of claim 7 , where each of the plurality of A-MPDU subframes comprises a plurality of aggregated MAC service data units having a combined length that is less than or equal to the fixed maximal MPDU length parameter.
13. An apparatus for transmitting one or more aggregated data frames in a wireless personal area network in accordance with IEEE 802.11bc protocol, comprising:
a transceiver to exchange data with a wireless device;
a processor; and
a memory storing instructions that, when executed by the processor, cause the apparatus to:
assemble and transmit a first aggregated MAC protocol data unit (A-MPDU) frame comprising a plurality of A-MPDU subframes characterized by a fixed MPDU start spacing parameter and a fixed maximal MPDU length parameter, where the apparatus is configured with the fixed MPDU start spacing parameter and the fixed maximal MPDU length parameter, and without negotiating association request and response messages with the wireless device; and
receive and process a first block acknowledgement (BA) message that is assembled and transmitted by the wireless device,
where the BA message comprises a BA bitmap identifying one or more of the plurality of A-MPDU subframes which are not successfully received by the wireless device, and
where the BA bitmap has a size characterized by a fixed buffer size parameter which is configured at the wireless device without negotiating add BArequest (ADDBA Request) request and response messages with the apparatus where the apparatus and the wireless device are each wireless Next Generation Vehicle-to-Everything (NGV) station (STA) devices.
14. The apparatus of claim 13 , where the fixed MPDU start spacing parameter has a predetermined value of 7991 octets.
15. The apparatus of claim 13 , where the fixed maximal MPDU length parameter has a predetermined value of 2 μs.
16. The apparatus of claim 13 , where the fixed buffer size parameter has a predetermined value of 32 MPDUs.
17. The apparatus of claim 13 , where each of the plurality of A-MPDU subframes comprises a plurality of aggregated MAC service data units having a combined length that is less than or equal to the fixed maximal MPDU length parameter.