Use Information (MPR, Routing Table) of OLSR. â Making Multicast ... Root: source. â Leaves ... â¢N : nodes distributed uniformly on square of size L x L unit ...
What we trying to do ? • Communication Service inside the building Testbed • • • •
30 nodes 4 gateway 802.11b Barriers – –
gateway
gatewa y
30m 80m
Barrier per 20 m Barrier per 15 m
Services • • • •
Push to Talk (PTT) VoIP Alarm & Notification Messenger
What functions We need? Messenger
VoIP Agent
SIP
RTP/RTCP
SDP
PTT Agent
Voice CODEC GSM Speex ACELPG.723.1
LQ-OLSR For v6
OOM For v6
TCP/UDP
Auto Config
IPv6
Mobile IP
Virtual Mac MACOM Kernel
802.11 MAC
802.11 MAC
802.11 MAC
NIC
NIC
NIC
Requirements for OOM • Minimizing
Overhead
– Utilizing Information I have already Use Information (MPR, Routing Table) of OLSR – Making Multicast Delivery Path only for Real multicast data building multicast delivery paths when Multicast Client try to send data
• Maximizing group member reachability – Delivering Data to All Group Members building redundant paths
Assume what we have already? • Info from OLSR – Which Node is Group? – Shortest Hop Count to all Group members
• Mechanism to Build Multicast Paths – Source Tree – Multicast Mesh – Stateless
Tree vs. Mesh • Source Based or Shared Tree • Multicast Mesh • Stateless Source Based •
Build Multicast Tree – Root: source – Leaves members
•
:
Mesh Based •
group
Combining shortest path
•
•
Fragile to Mobility
Ex) AMRIS, MAODV,MOLSR
paths
Outperforms tree-based multicasting when node moves frequently and fast
members Optimal Efficient
multiple
source and group members
from source to all group •
Build Mesh – Mesh : between
•
Alternative Path Reachability
•
Less Optimal
•
Ex) ODMPR, CAMP,FGMP
Higher
Basic Idea • On-Demand : (Group Members, Shortest Hop Count) in Packet
• Multiple Paths to Group Members – Node N is forwarder? Condition
each OLSR control packet with a digital signature for authenticating this ... especially considered for time synchronization problems, .... communication at all.
connections from the local host (127.0.0.1). V. CONCLUSION ... [8] A. Tønnesen, A Hafslund, P. Engelstad âIP Address Autoconfiguration for. Proactive Mobile ...
I don't know d2, send packet to my cluster head ... 0. 500. 1000. 1500. 2000. 2500. 0s. 150s. 300s. 600s. 900s. Pausing Time p a c k e ts. /s. HOLSR. Flat OLSR ...
Various reporting features. ... (link layer notification, medium power, high mobility). 0%. 20%. 40% ... development of ad hoc networks, and OLSR in particular.
Gateway Tunnelling (IP-in-IP encapsulation) of data packets. .... (127.0.0.1), not any socket. ... IP address of A, a nonce, the timestamp, the response signature.
Has non-standard command line options for research purposes. ⢠Nrlolsr is not fully rfc3626 ... Early development of nrlolsr helped test out early specifications.
address autoconfiguration, etc. Therefore, a modular ... ducing efficient binary code for a large variety of architectures. .... are common to any family (create, destroy, resolve, convert ... addresses, the choice between IPv4 and IPv6 is static (i.
timer and limited maximum number of queries to control message load. ⢠Backward compatibility with OLSR nodes that do not support the SLE extension. Server.
routing table is built and maintained based on the information of neighbor table. ... proactive link state routing protocol, employing periodic message exchange to ...
Computer Science Department, Univ of Califinia, Los Angeles, CA 90095 ... deployed for disaster recovery, modern battlefields, homeland security, etc.,.
ad-hoc network based on IPv6 and to deliver right specification to industry. ... a node has Internet connectivity (i.e. link-local address and global address).
CAD systems in-house, yet delivering model data to customers in different CAD formats. In the case of Magneti Marelli Powertrain, the Venaria Reale operation ...
navigation and flight control they also need to be able to locate, identify and pinpoint ... Technologist Consultant in the Electromagnetic. Engineering department.
Marelli is an international leader in the design and production of ... management behavior. ... The Magneti Marelli Powertrain business line has long faced the.
convenient, reliable and secure method for translating engineering data. This will be ... data transmission between Thales and it's customers and suppliers.
NEMO(Network Mobility)[3] is the network mobility sup- ... NEMO is the technol- ogy which realize such .... Users install the routing policy via the policy manage-.
dias such as wireless interfaces are useful in the situation vehicles are in tunnels lose its connectivity for the internet. This paper shows the problem statements ...
of the Electromagnetic Engineering and Test department based at Warton, Lancashire, a department which reflects the planned change of remit from just aircraft ...
CAD Systems: Pro/ENGINEER. I-DEAS ... Becoming the leading driveline systems products supplier to the ... efficiency during the initial design process, but.
specialises in product engineering and test services. There are some ... analysis techniques rather than building prototypes and seeing how ... MIRA's Advanced Engineering Electrical Group. âThere ... in terms of overall impact on car design.
Electromagnetic compatibility (EMC) is a growing issue for many ... industry. The problem stems from the increasing use of ... www.transcendata.com. CADfix is a ...
