NETWORKS
US Patent #7,986,713 Issued for Realtime Adaptive Bandwidth Network Physical Layer Connectivity
Optimum Communications
Services has gained a patent enabling bandwidth of physical layer connections
of communications networks to be continuously optimized according to realtime
data traffic load variations.
Need for innovation such as
this US Patent #7,986,713 is broadly recognized in the industry. Standard
developments including Hitless Adjustment of ODUflex (G.HAO) and Link Capacity
Adjustment Scheme (LCAS) underscore market demand for resizable network
physical layer connectivity, particularly for variable bit rate packet
services. These network physical layer techniques are promising for
high-performance, secure packet based communications services, since they avoid
the costs, complexities, security concerns and performance drawbacks (e.g.
unpredictable latencies) that arise when switching traffic at packet layers. A
critical remaining challenge for the physical layer optimization techniques is
to reach the statistical multiplexing bandwidth efficiency of packet switching.
However, the conventional
techniques for adjustable bandwidth network physical layer connectivity fail in
this critical aspect: conventional systems for adjusting the bandwidth rates
operate at orders of magnitude slower pace than what is required in order to
deliver the business value of rightsized network connections. To see why, it
needs to be realized that network data bursts arrive in sizes of individual
data packets, ranging typically from 64 bytes through thousands of bytes, and
lasting for as short time as less than a microsecond. To keep the physical
layer connection capacities optimized according to these packet data bursts,
the control loop for adjusting the connection bandwidths needs to operate at
the same time and bandwidth granularity as is the case with these data bursts
to be accommodated. The conventional techniques however operate at completely
different granularity, e.g. allocating full 1/10Gbps links for periods measured
unavoidably in several seconds due to the delays of traditional, server
software based, control systems. As such, though the bandwidth should be
adjusted at microsecond timescale in minimum packet size units such as 100
bytes or less, conventional systems are limited to allocating bandwidth in
amounts measured in several Gbits -- at millions of times too coarse
granularity.
The
Additionally, OCS was
recently granted the