Slides - the GMU ECE Department
... • When the receiver gets packet Pi,it can not verify the MAC since it does not yet know ...
... • When the receiver gets packet Pi,it can not verify the MAC since it does not yet know ...
Wireless Communications and Networks
... Preplanned route established before packets sent All packets between source and destination follow this route Routing decision not required by nodes for each packet Emulates a circuit in a circuit switching network but is not a dedicated path ...
... Preplanned route established before packets sent All packets between source and destination follow this route Routing decision not required by nodes for each packet Emulates a circuit in a circuit switching network but is not a dedicated path ...
投影片 1
... terminates, all the marked nodes (clusterheads or gateways) form the k-CCS/k-CS. Theorem 2: All the clusterheads (and gateways) marked in CKA form a k-CS (k-CCS) of the networks. This algorithm can be easily extended to achieve k-coverage in O(k log3 n) time with high probability. A randomized clu ...
... terminates, all the marked nodes (clusterheads or gateways) form the k-CCS/k-CS. Theorem 2: All the clusterheads (and gateways) marked in CKA form a k-CS (k-CCS) of the networks. This algorithm can be easily extended to achieve k-coverage in O(k log3 n) time with high probability. A randomized clu ...
Autonomic Wireless Sensor Networks: Intelligent Ubiquitous
... • Intra-zone transmission is regulated by IEEE 802.15.4 • Inter-zone transmission is regulated by the scheduling ...
... • Intra-zone transmission is regulated by IEEE 802.15.4 • Inter-zone transmission is regulated by the scheduling ...
Lecture 6
... ◦ Offers the same interface as the original content provider (transparent) ◦ Applications can select from which cache to retrieve data ◦ content providers may instruct caches to serve content on their behalf ◦ subscribers can receive data from the closest caches, saving network resources ...
... ◦ Offers the same interface as the original content provider (transparent) ◦ Applications can select from which cache to retrieve data ◦ content providers may instruct caches to serve content on their behalf ◦ subscribers can receive data from the closest caches, saving network resources ...
ECE544Lec6DR15
... Protocol Independent Multicast (PIM) • “Protocol Independent” – does not perform its own routing information exchange – uses unicast routing table made by any of the existing unicast routing protocols ...
... Protocol Independent Multicast (PIM) • “Protocol Independent” – does not perform its own routing information exchange – uses unicast routing table made by any of the existing unicast routing protocols ...
ECE544Lec6DR11
... Protocol Independent Multicast (PIM) • “Protocol Independent” – does not perform its own routing information exchange – uses unicast routing table made by any of the existing unicast routing protocols ...
... Protocol Independent Multicast (PIM) • “Protocol Independent” – does not perform its own routing information exchange – uses unicast routing table made by any of the existing unicast routing protocols ...
Week 4-1 Arp and Ehternet
... – bits coming from one link go out all other links – at the same rate – no frame buffering – no CSMA/CD at hub: adapters detect collisions – provides net management functionality ...
... – bits coming from one link go out all other links – at the same rate – no frame buffering – no CSMA/CD at hub: adapters detect collisions – provides net management functionality ...
pdf
... y Requires certificate authority y Like we discussed in secure web services talk y This is not hard, so can assume at least this level of ...
... y Requires certificate authority y Like we discussed in secure web services talk y This is not hard, so can assume at least this level of ...
Meiden Review 2013 No.3 (Series No.159)
... transmission which is caused by a low speed part. However, it is not always better to do faster. As shown in the Fig. 4, packets are discarded when an unbalance between hub input and output is occured. When 1Gbps is changed down to 100Mbps on the input side, traffic per hour is suppressed and the bu ...
... transmission which is caused by a low speed part. However, it is not always better to do faster. As shown in the Fig. 4, packets are discarded when an unbalance between hub input and output is occured. When 1Gbps is changed down to 100Mbps on the input side, traffic per hour is suppressed and the bu ...
A S P
... For this information exchange, they never use the central authority as well as existing fixed network infrastructure. This upcoming technology creates new research opportunities and dynamic challenges for different topology of the network, bandwidth limitation, node’s battery capacity improvement an ...
... For this information exchange, they never use the central authority as well as existing fixed network infrastructure. This upcoming technology creates new research opportunities and dynamic challenges for different topology of the network, bandwidth limitation, node’s battery capacity improvement an ...
IP Multicast
... • Intermediate routers perform pruning whenever possible. • Flooding and pruning are repeated periodically, when the ...
... • Intermediate routers perform pruning whenever possible. • Flooding and pruning are repeated periodically, when the ...
PDF
... transmitting messages from clique to clique. Ambassador nodes propagate broadcast packets by copying them from the source clique to every other clique to which they belong. A cache of the MD5 contents of recently sent packets avoids duplication and routing loops, while preventing denial of service ...
... transmitting messages from clique to clique. Ambassador nodes propagate broadcast packets by copying them from the source clique to every other clique to which they belong. A cache of the MD5 contents of recently sent packets avoids duplication and routing loops, while preventing denial of service ...
Lec_2
... linking devices (usually called nodes) to one another. There are four basic topologies Possible: mesh, star, bus, and ring (see Figure 1.4). Figure 1.4 Categories of topology ...
... linking devices (usually called nodes) to one another. There are four basic topologies Possible: mesh, star, bus, and ring (see Figure 1.4). Figure 1.4 Categories of topology ...
Spanning-Tree Direct VS Indirect Link Failures
... 3768 designed to increase the availability of the default gateway servicing hosts on the same subnet. VRRP introduces the concept of a “virtual router” that is addressed by IP clients requiring gateway service. The actual routing service is provided by physical routers running the VRRP protocol. An ...
... 3768 designed to increase the availability of the default gateway servicing hosts on the same subnet. VRRP introduces the concept of a “virtual router” that is addressed by IP clients requiring gateway service. The actual routing service is provided by physical routers running the VRRP protocol. An ...
Cross layer design for Wireless networks
... constraints that must be met by the network Energy and delay constraints change design principles across all layers of the protocol stack These challenges apply to all wireless networks, but are amplified in ad hoc/sensor networks ...
... constraints that must be met by the network Energy and delay constraints change design principles across all layers of the protocol stack These challenges apply to all wireless networks, but are amplified in ad hoc/sensor networks ...
