Technology of terabit optic circuit packet integrated switching system
New
exchange system and integrated optic circuit packet layers will be
provided to meet the large capacity, high quality, low cost and
effective demand so as to adapt to the cable wireless traffic spikes in
the service in the future.
A
connection-oriented packet transport technology is considered to be an
effective way to improve the performance of packet data transmission. It
is necessary, can put a layer of transport network in the direction of
capital spending and minimizing operating costs to overcome the network
provider's storage and traffic increase of income. And unified control
mechanism is applied to the network resource allocation, flexible
wavelength circuit and packet layer according to the
service characteristics. The key technologies of the system are as
followings.
• Technology of Terabit Optic-Circuit-Packet Integrated Switching System
* Connection-oriented Packet Transport
* Optic-Circuit-Packet Integrated Switch
* Optic-Circuit-Packet Layer Integrated Control/Management
• Technology of beyond-100G Optical Transmission
* Long-reach OTN Transceiver
* Short-reach Ethernet Transceiver
Technology of terabit optic circuit packet integrated switching system
Smart IDC Network Control Technology for Cloud Service
Along
with the rapid spreads and changes of cloud services and the
technologic growth of the components in the IDC, the IDC networks are
demanding following changes.
Cloud optimized:
The virtualization rate of the server is rising up to 10:1-100:1 and
storage virtualization is also possible recently. So IDC is requiring
the cloud-optimized virtualization to the network side which are
connecting the virtualized cloud resources.
Flattened:
There are network control needs to reduce the delay latency of
virtualized server-to-server communications which is occuping up to 70%,
to rise the utilization rate the link resources of L2 IDC networks of
Tree-shape multi-layer hierarchical architecture with STP.
Auto-Managed:
There are demands of integrated management of network and cloud
resources between IDC and create/delete/VM migration to ensure seamless
services in the cloud.
Therefore, our research target to develop the Smart IDC fiber optic solution
to solve the current problems of IDC network with the 3 IDC network
control technologies of the Cloud-Optimized Virtual Network Control
technology, the Flattened IDC Network Control Technology and
Auto-managed IDC network control technology.
High speed optical transmission technology
The
rapid progress in optical transmission technology has been supporting
the ever increasing transmission traffic. In particular, the WDM
technology, it is by the end of last century, played a main role.
However, the new technology needs to use data traffic exponentially. A
solution is 100Gb/s transmission. IEEE announced 40G/100G Ethernet
standard and ITU-T has completed ONT standard to accommodate 100G
signals in DWDM backbone network. Recently, the 100Gb/s transmission
technology has become the commercial deployment, in addition to the
existing 10Gb/s and 40Gb/s. Already technologies beyond 100G or 400G are
started being discussed. With a long-term perspective, it is a
disruptive
technology, SDM (space division multiplexing)
technology is seriously explored to harness the traffic in economic and
energy efficient way.
Next Generation WDM-PON Technology
The
WDM-PON is promising technology to provide broadband access offering
optic-wireless converged next generation multi-application service with
the highest quality.
There are many advantages of the WDM-PON:
*
Using multiple wavelength on a single fiber, each of which carries a
transmission bandwidth up to 10Gb/s at maximum; Therefore, the WDM-PON
can reduce the optical access infrastructure;
* Suitable for long-reach application and possible to achieve OPEX reduction;
* Provide co-existence with legacy TDM-PON (EPON system, and GPON) systems and pay as you grow upgradability;
*
Unique advantages of so-called protocol transparency, which means that
it requires no specific transmission protocol, and the physical layer
security, in addition to scalability in the increase of the bandwidth
and guarantee of the quality of service based on bandwidth abundance.
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