METHOD AND APPARATUS FOR CONTROLLING HANDSHAKE IN A PACKET TRANSMISSION NETWORK

摘要

The present invention relates to a method and apparatus for controlling a handshake operation. Datagram Transport Layer Security (DTLS) is an important secure protocol in the IP based Internet of things The performance of DTLS handshake can be significantly affected by network status, traffic and packet loss rate, etc. It is therefore suggested evaluating a package loss rate and estimating causes of packet loss. Then, a DTLS handshake strategy may be changed adaptively based on the detection of packet loss and network status. As a result, the successful rate and delay of DTLS handshake can be improved. An acknowledgement and a non-acknowledgement mode may be used in a hybrid way to evaluate the package loss rate and estimate causes of packet loss and eventually improve performance of DTLS handshake.

主权项

1. An apparatus for controlling handshake in a packet transmission network, the apparatus comprising:
a detector for detecting packet loss in a handshake-based packet transmission and for estimating a cause of the detected packet loss; and a controller for changing a handshake strategy of the packet transmission based on the estimated causes, wherein the controller is adapted to estimate a packet loss rate caused by said estimated cause and to estimate a remaining time for handshake based on the packet loss rate, to compare the remaining time with a predetermined handshake timeout, wherein the controller is adapted to change the handshake strategy upon determination that the estimated remaining time is larger than the predetermined handshake timeout.