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Displaying 1-15 out of 15 total
On Optimal Cell Activation for Coverage Preservation in Green Cellular Networks
Found in: IEEE Transactions on Mobile Computing
By Chen-Yi Chang,Wanjiun Liao,Hung-Yun Hsieh,Da-Shan Shiu
Issue Date:November 2014
pp. 2580-2591
Energy-efficient base station (BS) operation is a key design goal in green cellular networks. An effective way for energy conservation of BSs is to switch BSs on/off according to the traffic profile. However, such operations may create coverage holes in th...
 
An Empirical Study of a Chinese Online Social Network--Renren
Found in: Computer
By Jianwei Niu,Jing Peng,Lei Shu,Chao Tong,Wanjiun Liao
Issue Date:September 2013
pp. 78-84
Deeper knowledge of social networks' structure and temporal evolution enhances data mining for both research and education purposes. An empirical analysis of a Chinese social network, Renren, shows that it follows an exponentially truncated power law in de...
 
Protocol design for scalable and adaptive multicast for group communications
Found in: 2008 IEEE International Conference on Network Protocols
By De-Nian Yang, Wanjiun Liao
Issue Date:October 2008
pp. 33-42
Currently, IP multicast and Explicit Multi-Unicast (Xcast) are two approaches for multicast communications. IP multicast is designed for large groups but is not scalable in terms of the group number because every router in a multicast tree needs to store t...
 
On Bandwidth-Efficient Overlay Multicast
Found in: IEEE Transactions on Parallel and Distributed Systems
By De-Nian Yang, Wanjiun Liao
Issue Date:November 2007
pp. 1503-1515
In this paper, we propose a new multicast delivery mechanism for bandwidth-demanding applications in IP networks. Our mechanism, referred to as Multiple- estination Overlay Multicast (MOM), combines the advantages of IP multicast and overlay multicast. We ...
 
Proportional Fairness for QoS Enhancement in IEEE 802.11e WLANs
Found in: Local Computer Networks, Annual IEEE Conference on
By Jeng Farn Lee, Wanjiun Liao, Meng Chang Chen
Issue Date:November 2005
pp. 503-504
<p>In this paper, we study the proportional fairness problem in IEEE 802.11e wireless local area networks (WLANs). With 802.11e EDCA, only priority-based service is supported. Such priority-based service, while allowing differentiated service for flo...
 
A Per-Class QoS Service Model in IEEE 802.11e WLANs
Found in: Quality of Service in Heterogeneous Wired/Wireless Networks, International Conference on
By Jeng Farn Lee, Wanjiun Liao, Meng Chang Chen
Issue Date:August 2005
pp. 26
<p>In this paper, we study the provision of perclass QoS for IEEE 802.11e Enhanced Distributed Channel Access (EDCA) WLANs. We propose two mechanisms, called BIWF-SP and IDFQ-SP, based on backoff interval (BI) and inter-frame space (IFS), respectivel...
 
All Optical Multicast Routing in Sparse-Splitting Optical Networks
Found in: Local Computer Networks, Annual IEEE Conference on
By Cheng-Yu Hsieh, Wanjiun Liao
Issue Date:October 2003
pp. 162
This paper studies all-optical multicast routing in wavelength-routed optical networks with sparse light splitting. In a sparse splitting network, only a small percentage of nodes are capable of light splitting, i.e., multicast capable. The typical solutio...
 
A self-configuring RED gateway for quality of service (QoS) networks
Found in: Multimedia and Expo, IEEE International Conference on
By Chin-Hui Chien, Wanjiun Liao
Issue Date:July 2003
pp. 793-796
This paper studies self-configuring random early detection (RED) gateways for quality of service (QoS) networks. Existing work only considers the of RED gateways for networks with best effort flows. This paper focuses on QoS networks in which both assured ...
 
Wireless Multimedia Networks
Found in: Parallel Architectures, Algorithms, and Networks, International Symposium on
By Victor O.K. Li, Wanjiun Liao
Issue Date:May 2002
pp. 0079
No summary available.
 
The Split and Merge Protocol for Interactive Video-on-Demand
Found in: IEEE Multimedia
By Wanjiun Liao, Victor O.K. Li
Issue Date:October 1997
pp. 51-62
true video-on-demand (VoD) system provides the ultimate flexibility in video services by allowing users to select any video programs, at any time, and to perform any VCR-like user interactions. To allow true VoD, one approach is to have a dedicated video s...
 
The Split and Merge (SAM) Protocol for Interactive Video-on-Demand Systems
Found in: IEEE Computer and Communications Societies, Annual Joint Conference of the
By Wanjiun Liao, Victor O. K. Li
Issue Date:April 1997
pp. 1349
A true Video-on-Demand (VOD) system provides the ultimate flexibility in video services by allowing users to select any video programs, at any time, and to perform any VCR-like user interactions. To allow true VOD, one approach is to have a dedicated video...
 
Efficient Resource Allocation of Mobile Multi-View 3D Videos with Depth Image-Based Rendering
Found in: IEEE Transactions on Mobile Computing
By Ting-Yu Ho,De-Nian Yang,Wanjiun Liao
Issue Date:May 2014
pp. 1
Depth-Image-Based Rendering (DIBR) is a popular technology and enables the viewers to watch multi-view 3D videos via TV or smart phone. In this paper, we propose a game-theoretical framework over a multi-view and multi-video network where one server delive...
 
Modeling the contention mechanism of DOCSIS in HFC networks
Found in: Computers and Communications, IEEE Symposium on
By Kai-Chien Chang, Wanjiun Liao
Issue Date:July 2004
pp. 798-803
The hybrid fiber coax (HFC) network is a widely-used technology of broadband access networks to the home. The data-over-cable service interface specifications (DOCSIS) designed by the Multimedia Cable Network System Partners (MCNS) is the de facto standard...
 
Application-Layer Conference Trees for Multimedia Multipoint Conferences Using Megaco/H.248
Found in: Multimedia and Expo, IEEE International Conference on
By Jen-Chun Chang, Wanjiun Liao
Issue Date:August 2001
pp. 26
Abstract This paper proposes a new approach to establishing application layer conference trees for multimedia multipoint conferences on the Internet using the Megaco/H.248 protocol, a VoIP media gateway control protocol. Traditionally, a multipoint confere...
 
Receiver-Initiated Group Membership Protocol (RGMP): A New Group Management Protocol for IP Multicasting
Found in: Network Protocols, IEEE International Conference on
By Wanjiun Liao, De-Nian Yang
Issue Date:November 1999
pp. 51
Internet multicast is an important networked service for many existing and emerging applications. The dominant mechanism for group management of IP multicasting is the Internet Group Management Protocol (IGMP). IGMP is based on a query/reply model and refr...
 
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