Browsing by Author "Chang, Brian Y."

Now showing 1 - 2 of 2

A Zero Flow Entry Expiration Timeout P4 Switch
(2018-01-01)
He, Cheng-Hung
;
Chang, Brian Y.
;
Chakraborty, Suchandra
;
Chen, Chien
;
Wang, Li Chun
Existing OpenFlow based flow expiry mechanisms rely on a fixed timeout after which the switch proactively removes the flow entries from its flow table. Assigning an appropriate value to this timeout presents a tradeoff between efficient flow table utilization and controller overhead.We propose a simple addition of a zero flow entry expiration timeout scheme to idle timeout mechanism on a P4 based switch that identifies the last packet of a TCP flow, and removes the corresponding flow entry from the flow table. It enables connections to be deleted from the flow table right after it finishes, instead of waiting to expire after it reaches the timeout threshold and causing unnecessary flow table occupation.
Design and Implementation of UAV-enabled Flying Access Points
(2018-01-01)
Chang, Brian Y.
;
Chen, Y. Chieh
;
Liao, Kuan Hsun
;
Liu, Meng Hsueh
;
Sio, Chon-Hou
We propose a new kind of UAV communication structure that enables UAVs to form in the shapes of "clusters", enabling more UAVs to be controlled simultaneously and provide large-scale services such as Wi-Fi access points. Evaluation tests are performed to test the performance of our proposed architecture and the bandwidth of the Wi-Fi access points.