Method and system for transmission of dynamic bandwidth data frame
A dynamic bandwidth and transmission method technology, applied in the field of communication, can solve problems affecting the reasonable and efficient utilization of bandwidth resources, and achieve the effect of reducing overhead and improving data transmission efficiency
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Embodiment 1
[0048] Figure 4 is a schematic diagram of a dynamic bandwidth data frame transmission method according to the preferred embodiment 1 of the present invention.
[0049] In a large-bandwidth channel, due to the different OBSS conditions around the sending station and the receiving station, their respective operating bandwidths are also different. When obtaining a transmission opportunity TXOP, the sending station and the receiving station can use the RTS / CTS mechanism for dynamic bandwidth. negotiation. The sending station performs channel idle detection at the PIFS interval before sending the RTS, and judges that the current available bandwidth is 80MHz, that is, sends the RTS on the 80MHz bandwidth for channel reservation. The sending site calculates the channel reservation time information Duration according to the data to be sent, the possible response time length and the appropriate inter-frame interval, and carries it on the RTS frame, and also carries the requested send...
Embodiment 2
[0052] Figure 5 is a schematic diagram of a dynamic bandwidth data frame transmission method according to the second preferred embodiment of the present invention.
[0053] Same as the preferred embodiment 1, when the sending station continues to send data after the bandwidth negotiation RTS / CTS is completed, that is, the sending of data frame1 does not receive an ACK1 confirmation response after waiting for a specific time interval, then after sending the PIFS interval of data frame1 Retransmit data frame1. Since the retransmitted data frame1 starts to be sent within the channel reservation time, the sending station retransmits data frame1 and completes the retransmission of the data frame, that is, completes the retransmission of data frame1 and the new ACK acknowledges receipt of a frame. Since the end time of the retransmission of the data frame has exceeded the channel reservation duration and exceeded the TXOP limit, the sending opportunity ends after the retransmissio...
Embodiment 3
[0055] Image 6 is a schematic diagram of a dynamic bandwidth data frame transmission method according to the third preferred embodiment of the present invention.
[0056] Same as the preferred embodiment 1, since the start sending time of data frame1 is within the channel reservation duration, when the sending station continues to send data after the bandwidth negotiation RTS / CTS is completed, that is, the sending of data frame1 is not received after waiting for a specific time interval Until ACK1 confirms the response, this transmission fails. Since this transmission has exceeded the channel reservation time and exceeded the TXOP limit, this transmission is ended, and the normal backoff process is performed again, and retransmission is performed after obtaining the next sending opportunity.
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Abstract
Description
Claims
Application Information
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