Takeshi Kubo

TL;DR: In this paper, a call control device is used to control call connections among terminal devices connected with a network, and it includes: a status update means to set a path switching standby state when the change of a path of a call-control message is determined; a receiving means to receive the call control message; a new path establishment means which, upon receiving a first call-controlled message from a terminal device in the standby state for path switching, rewrites information on the first call message path to a new message path; a transmitting means to transmit the rewritten first call control

TL;DR: In this paper, each communication device updates the potential variables and auxiliary variables of an adjacent device, which are preserved each time of receiving the potential variable and the auxiliary variable from the adjacent device.

TL;DR: In this paper, the authors propose a server device which links a device requesting processing with a device executing the requested processing, where the server device comprises: executor management means which stores a database including executor information and executor identifiers used to select executors, for each executor; processing means which acquires executor identifier corresponding to executors' information which matches an execution condition in a number matching a distribution number condition.

TL;DR: In this paper, a gathering-device comprises means which mutually communicates with each of a plurality of provision devices via a relay device and generates an encryption key shared by the gathering device and the plurality of devices.

TL;DR: A lightweight method that can determine the fault location by counting the number of the retransmitted messages on the limited SIP messages and locate loss links of Sip messages with a sufficiently low probability of failure is proposed.