Fragment receiving and sending method and fragment receiving and sending device

Abstract

Embodiments of the present invention provide a fragment receiving and sending method and a fragment receiving and sending device. The method for receiving fragments includes: receiving a group of fragments from a sending end through a first channel, wherein the sending end suspends sending the next group of fragments after sending the group of fragments; after receiving the above group of fragments , and immediately send one or more first confirmation messages to the sending end through the first channel. The embodiment of the present invention can immediately send a confirmation message to the sender through the current channel after receiving a group of fragments through the current channel, thereby avoiding delays in the sending and receiving process of the fragments due to the competition and occupation of the channel by other nodes, and improving the transmission efficiency.

Description

[0001] This application claims the priority of the invention patent application 201110276082.9, which was filed with the State Intellectual Property Office on September 16, 2011, and is entitled "Method for Receiving and Sending Fragments and Apparatus for Receiving and Sending Fragments". technical field [0002] Embodiments of the present invention relate to the field of communication technologies, and more particularly, to a method for receiving and sending fragments and an apparatus for receiving and sending fragments. Background technique [0003] Fragmentation is a method commonly used in wireless transmission to enhance transmission reliability. Generally speaking, it means that the sender divides a complete MAC layer data frame or command frame into multiple small data packets (also called fragmentation). After sending, the receiving end receives these small data packets and then combines them into the original data frame or command frame. [0004] Usually, the sende...

AI Technical Summary

Problems solved by technology

[0005] When the receiving end sends an acknowledgment message containing the reception status of each fragment in each group of fragments, it needs to compete for the channel, that is, the period between the sending end sending the last fragment of each group and the receiving end preparing to send the confirmation message , the channel may be competed and occupied by other nodes, resulting in that the confirmation message cannot be sent in time, so that the entire fragmentation sending and receiving process is delayed

Images