Method and sender for sending aggregated media access control protocol data unit frame

Abstract

The present invention proposes a method for sending an Aggregate Media Access Control Protocol Data Unit (AMPDU) frame and a sending end, wherein the method includes: the sending end sets A plurality of MAC protocol data unit (MPDU) frames in the AC queue are aggregated into a plurality of first AMPDU frames, each first AMPDU frame includes AmpduLimit MPDU frames, and the total number of MPDU frames included in all first AMPDU frames does not exceed A preset AC queue window size (Window Size); the sending end continuously sends the first AMPDU frame of the AC queue. The invention can realize the quality of service (QoS) of the AC queue.

Description

technical field [0001] The invention relates to the technical field of WLAN, in particular to a method and a sending end for sending AMPDU frames. Background technique [0002] The 802.11E protocol is a wireless local area network (WLAN) standard formulated by IEEE to meet the requirements of quality of service (QoS). There are two key technologies: access type (AC, Access Category) queuing technology and transmission opportunity (TXOP, Transmission of Opportunity) technology. [0003] Among them, the AC queue technology refers to that the wireless access node (AP) / wireless workstation (STA) as the sending end puts media access control protocol data unit (MPDU, MAC Protocol Data Unit) frames into AC queues with different priorities. The time for MPDU frames in the AC queue to preempt the channel is different. Such as figure 1 A schematic diagram of the channel preemption mechanism of the AC queue stipulated by 802.11E in the prior art is shown. exist figure 1 In , Backo...

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Problems solved by technology

[0006] However, although both TXOP technology and AMPDU technology are supported at the same time, these two technologies of IEEE 802.11N cannot actually play a role at the same time to achieve QoS

The reason is: AMPDU technology stipulates that there is only one AMPDU frame at the same time in the AC queue of the sending end. After the AMPDU frame is sent, it needs to wait for a period of time before generating a new AMPDU frame and continuing to send it. This makes In the TXOP technology, the provision of continuously sending multiple AMPDU frames cannot be realized; and, because it still needs to wait for a period of time, the AMPDU frames in the low-priority AC queue may seize channel resources, which eventually leads to high-priority and low-priority The channel resources that AC queues can obtain are not much different, but the high performance of AC queues with high priority cannot be guaranteed, and QoS cannot be achieved.

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