Application–network Collaboration in IP-optical Networks
- Technological fields
- Telecommunications Network Technologies
- Keyword
- Uncompressed video transmission
- GMPLS
- Network virtualization
- Laboratory organization
- NTT Network Service Systems Laboratories, NTT Network Innovation Laboratories
Overview
Technologies for streaming video over Internet protocol (IP) networks are showing remarkable evolution in the world. In particular, the transmission of high-resolution video such as high-definition television (HDTV) is attracting high-end users such as broadcasting studios. We have developed (1) on-demand circuit setup and (2) adaptive codec selection according to circuit availability. These were achieved through collaboration between the video transmission application and the IP-optical traffic engineering (TE) server managing the network and controlling the path setup.
Features
- Gigabit-per-second-class circuits provided by managing optical network resources
- Selection of video codec and error correction scheme according to network status (bandwidth, latency, jitter, and packet loss rate)
- CPU (central processing unit) resources for encoding and decoding provided by the network
- Dynamic optimization of circuit routes in response to changes in traffic conditions
Application scenarios
- Live video transmission from location sites to broadcasting studios
- Transmission of video raw material between studios for editing
- Videoconferencing and remote monitoring
- Telemedicine and e-learning
