(57) ABSTRACT In a Sending terminal (10), a propagation delay measurement portion (102)
uses propagation delay time measurement packets to measure the round trip time to/from an …

The packet loss in a wired section is reported to a receiving terminal (61) using a loss
notification packet from a gateway (62) located at the boundary between a wired section and …

(57) ABSTRACT A communication apparatus includes an arrival time estima tion unit,
connection selection unit, and network processing unit. The arrival time estimation unit …

A transmission device uses transmission delay time of recip rocation with the terminal and
time information of the trans mission device to create a correction value of time informa tion …

(57) ABSTRACT A wireless communication system includes a mobile termi nal, a base
station apparatus, a data relay apparatus and a server apparatus. One of the mobile …

A communication apparatus includes a time-stamp generating unit for generating a time
stamp during transmission or reception of a PDU transmitted and received, a transmission …

There is disclosed a communication system and communication protocol in which a source
node and one or more destination nodes are logically connected, and a connection ID for …

Provided is a node unit which is branch-connected to another communication node via a
transport medium, the node unit comprising: a delay measurement unit which transmits a …

In a data communication system, the function of automatic repeat request is provided for
transmission of packets based on a data communication protocol Such as the Real-Time …

(57) ABSTRACT A data transmission apparatus including a receiving unit for receiving
transmitted packets, a priority decision unit; a retransmission packet Storage unit; a …