Yeng-zhong Lee
Ucla school of engineering, Computer Science, Faculty Member
In ad hoc wireless networks, scalability issue associated with routing is particularly critical as node mobility, constrained resource (eg, bandwidth and power), and unpredictable radio channel behavior impose additional challenges to... more
In ad hoc wireless networks, scalability issue associated with routing is particularly critical as node mobility, constrained resource (eg, bandwidth and power), and unpredictable radio channel behavior impose additional challenges to growth. The routing protocols for ad hoc ...
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Research Interests:
... Leyla Fulya Filiz Rcvr Test No. No of GS Flows No of CL Flows Total No of Flows Flow Inter. ... We exercise RSVP's flow merge and split capabilities on adjacent peers Selma and Leyla outside the aggregation region, which also... more
... Leyla Fulya Filiz Rcvr Test No. No of GS Flows No of CL Flows Total No of Flows Flow Inter. ... We exercise RSVP's flow merge and split capabilities on adjacent peers Selma and Leyla outside the aggregation region, which also seem to be process-intense functions. ...
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Bluetooth 111 is a universal radio interface in the 2.4 GHz ISM frequency hand, which will enable users to connect a wide range of small electronic devices such as notebook computers, cellular phones and other portable handheld devices... more
Bluetooth 111 is a universal radio interface in the 2.4 GHz ISM frequency hand, which will enable users to connect a wide range of small electronic devices such as notebook computers, cellular phones and other portable handheld devices easily and quickly, without the need for ...
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Research Interests: Computer Science, Wireless Sensor Networks, Routing protocols, Wireless Network, Ad Hoc Networks, and 10 moreDegradation, Wireless Ad hoc Networks, Ad hoc network, Interference, MPEG enabled Multicast Routing, Network Topology, Simulation experiment, Background Noise, Wireless Ad Hoc Network, and Unicast
... AODV-DFR combines proactive and reactive routing features. ... Note that only route entries to traffic destinations are maintained, as opposed to routes to all nodes as in proactive routing. B. Routing Table and Direction Cache ...... more
... AODV-DFR combines proactive and reactive routing features. ... Note that only route entries to traffic destinations are maintained, as opposed to routes to all nodes as in proactive routing. B. Routing Table and Direction Cache ... IV. PERFORMANCE EVALUATION ...
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... to Mobility and Load Jiwei Chen*, He Zhout, Yeng-Zhong Lee*, Mario Gerla*, Yantai Shut ... REFERENCES [1] C. Perkins and P. Bhagwat, "Highly dynamic destination-sequenced distance-vector routing (DSDV) for... more
... to Mobility and Load Jiwei Chen*, He Zhout, Yeng-Zhong Lee*, Mario Gerla*, Yantai Shut ... REFERENCES [1] C. Perkins and P. Bhagwat, "Highly dynamic destination-sequenced distance-vector routing (DSDV) for mobile comput-ers," Proceeding ofthe ACM SIGCOMM'94, ...
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Research Interests: Spine, Wireless networks, Charts, Images, Remotely Operated Vehicles, and 12 moreBandwidth Allocation, MAC Layer, Dynamic Bandwidth Allocation, Delays, Wireless communication systems, Multiple Access, Request for Information Issues, Scheduling Algorithm, Wireless Ad Hoc Network, Unmanned Aerial Vehicle, Channel assignment, and Network Configuration
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ABSTRACT In this paper, we investigate the performance of multicast-enabled landmark ad-hoc routing (denoted as M-LANMAR) protocol using a Linux implementation as well as a QualNet simulation model. The main objectives are the validation... more
ABSTRACT In this paper, we investigate the performance of multicast-enabled landmark ad-hoc routing (denoted as M-LANMAR) protocol using a Linux implementation as well as a QualNet simulation model. The main objectives are the validation of our implementation and the demonstration of the advantages of M-LANMAR. Using a Linux implementation of ODMRP, we compare the performance of M-LANMAR to that of ODMRP in a small-scale testbed. Through simulation, we show also the scalability of M-LANMAR to large networks.
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In this paper we argue that a cause of poor performance of TCP NewReno in wireless ad hoc networks is the use of packet drop as feedback for window adjustment. While packets can be dropped because of wireless congestion/interference, it... more
In this paper we argue that a cause of poor performance of TCP NewReno in wireless ad hoc networks is the use of packet drop as feedback for window adjustment. While packets can be dropped because of wireless congestion/interference, it is true however that these losses ...
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Bluetooth is a universal radio interface in the 2.45Ghz frequency band, which will enable users to connect a range of small electronic devices. Any nu0 or more Bluetooth-enabled devices that come within range of each other can set up an... more
Bluetooth is a universal radio interface in the 2.45Ghz frequency band, which will enable users to connect a range of small electronic devices. Any nu0 or more Bluetooth-enabled devices that come within range of each other can set up an ad hoc connection, called a piconet. Within ...
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The ODMRP protocol is based on the idea of taking advantage of the broadcast medium in the packet forwarding and routing table related functionality. As such it does not use unicast messages per se but treats all packets as multicast... more
The ODMRP protocol is based on the idea of taking advantage of the broadcast medium in the packet forwarding and routing table related functionality. As such it does not use unicast messages per se but treats all packets as multicast packets and broadcasts. This setting is an ...
AbstractMobile ad hoc networks (MANETs) are self-organized networks that are envisioned to deploy with zero (or less)-configuration efforts in places where infrastructure networks are not available. In such a network, connectivity is... more
AbstractMobile ad hoc networks (MANETs) are self-organized networks that are envisioned to deploy with zero (or less)-configuration efforts in places where infrastructure networks are not available. In such a network, connectivity is enabled by automatic IP address ...
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Research Interests:
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UK PubMed Central (UKPMC) is an archive of life sciences journal literature.
The last few years have seen the evolution oftelecommunications from the classic architectures, mainly basedon static and wired structures, to the new mobile solutions basedon wireless technologies. This trend has led, on the one side,... more
The last few years have seen the evolution oftelecommunications from the classic architectures, mainly basedon static and wired structures, to the new mobile solutions basedon wireless technologies. This trend has led, on the one side, tothe definition of the third--generation mobile telecommunicationsystems and, on the other, to the development of personal areanetworks. The standards that are supposed to play a leading rolein these two fields in the near future are the Universal MobileTelecommunication System (UMTS) and ...
Over the past several years, mobile/wireless communications have evolved and proliferated a variety of solutions, and in some technologies, standardization is still under way. Among those technologies, we focus on UMTS and Bluetooth... more
Over the past several years, mobile/wireless communications have evolved and proliferated a variety of solutions, and in some technologies, standardization is still under way. Among those technologies, we focus on UMTS and Bluetooth because of their prominent and complementary features. While UMTS provides “tmiversal connectivity,” Bluetooth will be the most promising candidate technology to provide “ubiquitous connectivity.” In this paper, we advocate that a hybrid architecture of UMTS and Bluetooth provide a “one-architecture-fits ...
The standards that are supposed to play a leading role in third-generation mobile telecommunication and personal area networks in the near future are the Universal Mobile Telecommunication System (UMTS) and the Bluetooth (BT) radio... more
The standards that are supposed to play a leading role in third-generation mobile telecommunication and personal area networks in the near future are the Universal Mobile Telecommunication System (UMTS) and the Bluetooth (BT) radio technology, respectively. In this paper, we advocate that a hybrid architecture of UMTS and Bluetooth can take advantage of the complementary characteristics of these two technologies and provide a total solution for an indoor communication environment. We envision a cooperating ...