(Continuation of Question 14/13)
Packet forwarding and DPI (deep packet inspection) are essential for
multi-service delivery in packet-based networks and NGN environment. It is
particularly true when handling multi-service (e.g. IPTV/VoIP) traffic because
these applications have strict requirements on jitter, delay and packet loss
rate. The functionalities of DPI and packet forwarding enhancement can properly
identify different type of traffic so as to provide performance guarantees to
allow for time-sensitive applications.
This Question is intended to study the functionalities of deep packet inspection
and multi-service (e.g. IPTV/VoIP) aware identification, lookup, filtering,
forwarding and queuing, multi-service multicast and associated MIBs (management
information base) in packet-based networks and NGN environment. It addresses how
to make use of these existing bandwidth resources effectively to provide
guarantees for multi-service especially time-sensitive, loss-sensitive real-time
audio/video data delivery, how to use the control mechanism provided by the
current packet-based networks and NGN architecture.
This Question develops Recommendations with respect to requirements,
architectures, mechanisms and functionalities for packet forwarding and deep
packet inspection for multiple services in packet-based networks and NGN
environment. The related protocols are not within the scope of the question. The
associated work will be handled and progressed in co-operation with other
relevant study groups, the IETF, IEEE 802 etc. Study items to be considered
include, but are not limited to:
- The functionalities of DPI and packet forwarding enhancement. This includes
study on flexible and effective DPI mechanisms that allows network devices to
look at the packet header and payload in packet-based network and NGN
- Multi-service (e.g. IPTV/VoIP) aware identification. This includes the
identification filtering, forwarding, classification of the traffic based in a
rule database that includes information extracted for the packet header and
payload in packet based network and NGN environment.
- Node-level forwarding and queuing. This includes ingress lookup, filtering,
queuing, metering, priority remark, and delay-aware queue scheduling algorithms.
It should guarantee the bandwidth for identified audio and video services from
the control mechanism provided by the current packet-based networks and NGN
- Multi-service multicast aspects including multi-service multicast scenarios in NGN environment and optimized multicast mechanisms for video and audio services.
- Associated MIBs including definitions on low-level management objects.
- What enhancements to existing Recommendations are required to provide energy
savings directly or indirectly in information and communication technologies (ICTs)
or in other industries? What enhancements to developing or new Recommendations
are required to provide such energy savings?
Tasks include, but are not limited to:
- Develop new Recommendations according to the items under study.
Questions: All NGN and QoS related Questions
Study groups: All NGN and QoS related study groups
Standardization bodies, forums and consortia: IEEE 802 Committee, IETF