Reception processing method and reception device for wireless aggregation frame

Abstract

The invention provides a reception processing method for a wireless aggregation frame. The method comprises the following steps of: sequentially processing protocols of all media access control (MAC) protocol data unit (MPDU) frames which are received by a reception device at present by using a protocol reception processing unit; removing packages of all the processed MPDU frames sequentially; performing corresponding different operation processes according to different load frames of which the packages are removed in the process of removing the package of each MPDU frame; if the current load frames are aggregation frames, storing the aggregation frames into the current usable free buffer zone, and calculating the quantity of MAC service data unit (MSDU) frames in the aggregation frames to apply for buffer zone spaces with the same quantity as that of the MSDU frames; if the buffer zone is null before the aggregation frames are stored into the buffer zone, establishing the protocol reception processing unit, and starting direct memory access (DMA) transmission affairs to copy the MSDU frames in the aggregation frames into the applied buffer zone spaces; and after depolymerization completion messages are received, processing the polymerized MSDU frames in the buffer zone by using an upper user sequentially through the protocol reception processing unit, establishing the aggregation frames required to be aggregated in the buffer zone, and starting the DMA transmission affairs. By the method, the MSDU frames in the aggregation frames can be copied by a hardware DMA controller under the condition that MAC hardware cannot be aggregated, so that the reception processing efficiency of the aggregation frames is improved.

Description

technical field [0001] The invention relates to the field of wireless local area network communication, in particular to a method for receiving and processing wireless aggregation frames and a corresponding device. Background technique [0002] In order to increase the transmission rate of a wireless local area network (WLAN), the IEEE 802.11 working group established the 802.11n task group to devote itself to this. The 802.11n standard adopts many measures in both the physical layer and the MAC layer. The 802.11n standard introduces a technology combining Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) in the physical layer. , referred to as PHY) standard. In the basic MAC layer protocol of 802.11n, a series of control mechanisms are used in order to ensure that each station can obtain medium use opportunities fairly and avoid conflicts as much as possible; these mechanisms bring fixed overhead while improving system performance...

AI Technical Summary

Problems solved by technology

Obviously, if these copy operations are done by software, the overhead is quite large, which offsets the transmission efficiency that A-MSDU hopes to bring, and at the same time, most of the current MAC hardware does not support the aggregation of MSDU

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