A Multi-Poller based Energy-Efficient Monitoring Scheme for Wireless Sensor Networks (2009)
Abstract — For sensor networks deployed in unattended, harsh environments, the knowledge of sensor statuses such as liveness, node density and residue energy, is critical for maintaining the normal...
Minimizing the Cost of Mine Selection Via Sensor Networks (2009)
Abstract — In this paper, we study sensor enabled landmine networks by formulating a minimum-cost mine selection problem. The problem arises in a target defence scenario, where the objective is to...
On Cooperative Caching in Wireless P2P Networks ∗ (2009)
Jing Zhao, Ping Zhang, Guohong Cao
Some recent studies have shown that cooperative cache can improve the system performance in wireless P2P networks such as ad hoc networks and mesh networks. However, all these studies are at a very...
A Social Network Based Patching Scheme for Worm Containment in Cellular Networks (2009)
Zhichao Zhu, Guohong Cao, Sencun Zhu, Supranamaya Ranjan, Antonio Nucci
Abstract—Recently, cellular phone networks have begun allowing third-party applications to run over certain open-API phone operating systems such as Windows Mobile, Iphone and Google’s Android...
A Cross-layer Dropping Attack in Video Streaming over Ad Hoc Networks ∗ (2009)
Min Shao, Sencun Zhu, Guohong Cao, Tom La Porta, Prasant Mohapatra
Significant progress has been made to achieve video streaming over wireless ad hoc networks. However, there is not much work on providing security. Is existing security solution good enough for...
Extending Drive-Thru Data Access by Vehicle-to-Vehicle Relay (2009)
Jing Zhao, Todd Arnold, Yang Zhang, Guohong Cao
Recently, some researchers have performed extensive experiments to study the feasibility and performance of vehicle drive-thru access to roadside access points (APs). The experiments demonstrate that...
SVATS: A Sensor-network-based Vehicle Anti-Theft System (2009)
Hui Song, Sencun Zhu, Guohong Cao
Abstract—Today vehicle theft rate is very high, thus tracking/alarming systems are being deployed with an increasingly popularity. These systems however bear some limitations such as high cost,...
Routing in Intermittently Connected Sensor Networks (2009)
Lu Su, Changlei Liu, Hui Song, Guohong Cao
Abstract—To prolong the lifetime of sensor networks, various scheduling schemes have been designed to reduce the number of active sensors. However, some scheduling strategies, such as partial...
Sensor Relocation with Mobile Sensors: Design, Implementation, and Evaluation (2009)
Jie Teng, Tim Bolbrock, Guohong Cao, Tom La Porta
Abstract—Mobile sensors are useful in many environments because they can move to increase the sensing coverage. In this paper, we present a mobile sensor prototype in which the Mica2 sensor node is...
Guiling (grace Wang, Guohong Cao, Piotr Berman
Abstract—Constructing a sensor network with a mix of mobile and static sensors can achieve a balance between sensor coverage and sensor cost. In this paper, we design two bidding protocols to guide...
On scheduling vehicle-roadside data access (2009)
Yang Zhang, Jing Zhao, Guohong Cao
As vehicular networks become popular, more and more people want to access data from their vehicles. When many vehicles want to access data through a roadside unit, data scheduling becomes an...
Sdap: : a secure hop-by-hop data aggregation protocol for sensor networks (2009)
Yi Yang, Xinran Wang, Sencun Zhu, Guohong Cao
Hop-by-hop data aggregation is a very important technique for reducing the communication overhead and energy expenditure of sensor nodes during the process of data collection in a sensor network....
Improving Sensor Network Immunity under Worm Attacks: a Software Diversity Approach ∗ 1 (2009)
Yi Yang, Sencun Zhu, Guohong Cao
Because of cost and resource constraints, sensor nodes do not have a complicated hardware architecture or operating system to protect program safety. Hence, the notorious buffer-overflow...
A Chain Reaction DoS Attack on 3G Networks: Analysis and Defenses (2009)
Bo Zhao, Caixia Chi, Sencun Zhu, Guohong Cao
Abstract—The IP Multimedia Subsystem (IMS) is being deployed in the Third Generation (3G) networks since it supports many kinds of multimedia services. However, the security of IMS networks has not...
Efficient Hybrid Security Mechanisms for Heterogeneous Sensor Networks (2008)
Patrick Traynor, Student Member, Raju Kumar, Heesook Choi, Student Member, Guohong Cao, ...
Abstract—Many applications that make use of sensor networks require secure communication. Because asymmetric-key solutions are difficult to implement in such a resource-constrained environment,...
Embedded Systems Design (2008)
Mary Jane Irwin, Mary Jane Irwin, Vijay Narayanan, Mahmut Kandemir, Anand Sivasubramanian, Guohong Cao
● Sophisticated functionality » complex algorithms » user interfaces, complex I/O » safety and reliability issues ● Multiples, real-time constraints » real time, multi-rate ● Costs and...
On supporting distributed collaboration in sensor networks (2008)
Guiling Wang, Wensheng Zhang, Guohong Cao, Tom La Porta
In sensor networks, nodes may malfunction due to the hostile environment. Therefore, dealing with node failure is a very important research issue. In this paper, we study distributed cooperative...
Efficient Hybrid Security Mechanisms for Heterogeneous Sensor Networks (2008)
Patrick Traynor, Raju Kumar, Heesook Choi, Guohong Cao, Sencun Zhu, Thomas La Porta
Many applications that make use of sensor networks require secure communication. Be-cause asymmetric-key solutions are difficult to implement in such a resource-constrained en-vironment,...
Efficient Hybrid Security Mechanisms for Heterogeneous Sensor Networks (2008)
Patrick Traynor, Raju Kumar, Heesook Choi, Student Member, Student Member, Guohong Cao, ...
Abstract—Many applications that make use of sensor networks require secure communication. Because asymmetric-key solutions are difficult to implement in such a resource-constrained environment,...
Sensor Node Compromise Detection: The Location Perspective ∗ ABSTRACT (2008)
Hui Song, Sencun Zhu, Liang Xie, Guohong Cao
Node compromise is a serious security threat that hinders the successful deployment of large-scale wireless sensor networks. A node compromise often consists of three stages: physically obtaining and...
Distributed Software-based Attestation for Node Compromise Detection in Sensor Networks (2008)
Yi Yang, Xinran Wang, Sencun Zhu, Guohong Cao
Sensors that operate in an unattended, harsh or hostile environment are vulnerable to compromises because their low costs preclude the use of expensive tamper-resistant hardware. Thus, an adversary...
ACM Intl. Conf. on Mobile Computing and Networking (Mobicom'00), Aug. 2000 (2008)
Caching frequently accessed data items on the client side is an eective technique to improve performance in a mobile environment. Classical cache invalidation strategies are not suitable for mobile...
Supporting Cooperative Caching in (2008)
Ad Hoc Networks, Liangzhong Yin, Student Member, Guohong Cao
Most researches in ad hoc networks focus on routing and not much work has been done on data access. A common technique used to improve the performance of data access is caching. Cooperative caching,...
Stretch-Optimal Scheduling for On-Demand (2008)
Data Broadcasts Yiqiong, Yiqiong Wu, Guohong Cao
In order to effectively utilize the broadcast bandwidth, it is necessary to have efficient on-line scheduling algorithms that can balance individual and overall performance and can scale in terms of...
Mobile Multi-Layered IPsec (2008)
Heesook Choi Hui, Hui Song, Guohong Cao, Tom La Porta
To achieve high throughput in wireless networks, smart forwarding and processing of packets in access routers are critical for overcoming the effects of the wireless links. However, these services...
Towards event source unobservability with minimum network traffic (2008)
Yi Yang, Min Shao, Sencun Zhu, Bhuvan Urgaonkar, Guohong Cao
Sensors deployed to monitor the surrounding environment report such information as event type, location, and time when a real event of interest is detected. An adversary may identify the real event...
Towards Statistically Strong Source Anonymity for Sensor Networks (2008)
Min Shao, Yi Yang, Sencun Zhu, Guohong Cao
Abstract—For sensor networks deployed to monitor and report real events, event source anonymity is an attractive and critical security property, which unfortunately is also very difficult and...
Enhancing 802.11 with Relay-Enabled PCF (2007)
Integrating wireless LAN (WLAN) techniques with the third generation cellular networks has become a promising way to improve the performance of wireless systems. As WLANs play an important role in...
Cache-Miss-Initiated Prefetch in Mobile Environments (2007)
Prefetching has been widely used to improve system performance in mobile environments. Since prefetching also consumes system resources such as bandwidth and power, it is important to consider the...
Power-Aware Cache Management in Mobile Environments (2007)
Recent work has shown that invalidation report (IR) based cache management is an attractive approach for mobile environments. To improve the cache hit ratio of IR-based approach, clients should...
On Improving the Performance of IEEE 802.11 (2007)
It is well known that IEEE 802.11 provides a physical layer multi-rate capability. In this paper, we propose a novel MAC layer relay-enabled point coordination function (PCF) protocol, called #PCF,...
pDCS: Security and Privacy Support for Data-Centric Sensor Networks (2007)
Min Shao, Sencun Zhu, Wensheng Zhang, Guohong Cao
The demand for efficient data dissemination/access techniques to find the relevant data from within a sensor network has led to the development of data-centric sensor networks (DCS), where the sensor...
Jing Zhao, Student Member, Yang Zhang, Student Member, Guohong Cao, Senior Member
Abstract—Vehicular ad hoc networks (VANETs) have recently received considerable attention. To support VANET-based applications, it is important to disseminate data from an information source (data...
pDCS: Security and Privacy Support for Data-Centric Sensor Networks (2007)
Min Shao, Sencun Zhu, Wensheng Zhang, Guohong Cao
Abstract—The demand for efficient data dissemination/access techniques to find the relevant data from within a sensor network has led to the development of data-centric sensor networks (DCS), where...
DOI 10.1007/s11276-007-0031-z Mobile multi-layered IPsec (2007)
Heesook Choi, Hui Song, Guohong Cao, H. Song, G. Cao, ...
Abstract To achieve high throughput in wireless networks, smart forwarding and processing of packets in access routers is critical for overcoming the effects of the wireless links. However, these...
Liger: Implementing efficient hybrid security mechanisms for heterogeneous sensor networks (2006)
Patrick Traynor, Raju Kumar, Hussain Bin Saad, Guohong Cao, Thomas La Porta
The majority of security schemes available for sensor networks assume deployment in areas without access to a wired infrastructure. More specifically, nodes in these networks are unable to leverage...
Establishing pair-wise keys in heterogeneous sensor networks (2006)
Patrick Traynor, Heesook Choi, Guohong Cao, Sencun Zhu, Tom La Porta
Abstract — Many applications that make use of sensor networks require secure communication. Because asymmetric-key solutions are difficult to implement in such a resource-constrained environment,...
Establishing pair-wise keys in heterogeneous sensor networks (2006)
Patrick Traynor, Heesook Choi, Guohong Cao, Sencun Zhu, Tom La Porta
Abstract — Many applications that make use of sensor networks require secure communication. Because asymmetric-key solutions are difficult to implement in such a resource-constrained environment,...
LIGER: Implementing Efficient Hybrid Security Mechanisms for Heterogeneous Sensor Networks (2006)
Patrick Traynor, Raju Kumar, Hussain Bin Saad, Guohong Cao, Thomas La Porta
The majority of security schemes available for sensor networks assume deployment in areas without access to a wired infrastructure. More specifically, nodes in these networks are unable to leverage...
rDCF: A Relay-Enabled Medium Access Control Protocol for Wireless Ad Hoc Networks (2006)
It is well known that IEEE 802.11 provides a physical layer multirate capability and, hence, MAC layer mechanisms are needed to exploit this capability. Several solutions have been proposed to...
Real-Time Processing of Range-Monitoring (2006)
Queries In Heterogeneous, Ying Cai, Kiena. Hua, Guohong Cao, Toby Xu
Unlike conventional range queries, a range-monitoring query is a continuous query. It requires retrieving mobile objects inside a user-defined region and providing continuous updates as the objects...
SDAP: A Secure Hop-by-Hop Data Aggregation Protocol for Sensor Networks (2006)
Yi Yang, Xinran Wang, Sencun Zhu, Guohong Cao
Hop-by-hop data aggregation is a very important technique for reducing the communication overhead and energy expenditure of sensor nodes during the process of data collection in a sensor network....
T.: Real-time processing of range-monitoring queries in heterogeneous mobile databases (2006)
Ying Cai, Kien A. Hua, Guohong Cao, Toby Xu
Unlike conventional range queries, a range-monitoring query is a continuous query. It requires retrieving mobile objects inside a user-defined region, and providing continuous update as the objects...
Liger: Implementing efficient hybrid security mechanisms for heterogeneous sensor networks (2006)
Patrick Traynor, Raju Kumar, Hussain Bin Saad, Guohong Cao, Tom La Porta
Abstract — The majority of security schemes available for sensor networks assume deployment in areas without access to a wired infrastructure. More specifically, nodes in these networks are unable...
VADD: Vehicle-assisted data delivery in vehicular ad hoc networks (2006)
Jing Zhao, Student Member, Guohong Cao, Senior Member
Abstract—Multihop data delivery through vehicular ad hoc networks is complicated by the fact that vehicular networks are highly mobile and frequently disconnected. To address this issue, we adopt...
Self-protection for wireless sensor networks (2006)
Wensheng Zhang, Guohong Cao, Tom La Porta, W. Zhang
Dynamic proxy tree-based data dissemination schemes
Attack-Resilient Time Synchronization for Wireless Sensor Networks (2005)
Hui Song, Sencun Zhu, Guohong Cao
The existing time synchronization schemes in sensor networks were not designed with security in mind, thus leaving them vulnerable to security attacks. In this paper, we first identify various...
Sensor relocation in mobile sensor networks (2005)
Guiling Wang, Guohong Cao, Tom La Porta, Wensheng Zhang
Abstract — Recently there has been a great deal of research on using mobility in sensor networks to assist in the initial deployment of nodes. Mobile sensors are useful in this environment because...
It is well known that IEEE 802.11 provides a physical layer multi-rate capability, and hence MAC layer mechanisms are needed to exploit this capability. Several solutions have been proposed to...
Attack-resilient Time Synchronization for Wireless Sensor Networks (2005)
Hui Song, Sencun Zhu, Guohong Cao
The existing time synchronization schemes in sensor networks were not designed with security in mind, thus leaving them vulnerable to security attacks. In this paper, we first identify various...
Attack-Resilient Time Synchronization for Wireless Sensor Networks (2005)
Hui Song, Sencun Zhu, Guohong Cao
The existing time synchronization schemes in sensor networks were not designed with security in mind, thus leaving them vulnerable to security attacks. In this paper, we first identify various...
Wensheng Zhang, Hui Song, Sencun Zhu, Guohong Cao
Mobile sinks are needed in many sensor network applications for efficient data collection, data querying, localized sensor reprogramming, identifying and revoking compromised sensors, and other...
Purposeful Mobility in Tactical Sensor Networks (2005)
Guohong Cao, G. Kesidis, T. La Porta, Bin Yao, Shashi Phoha
Adding mobility to sensor networks can significantly increase the capability of the sensor network by making it resilient to failures, reactive to events, and able to support disparate missions with...
Defend against Cache Consistency Attacks in Wireless Ad Hoc Networks (2005)
Caching techniques can be used to reduce bandwidth consumption and data access delay in wireless ad hoc networks. When cache is used, cache consistency issues must be addressed. To maintain strong...
Sensor Relocation in Mobile Sensor Networks (2005)
Guiling Wang, Guohong Cao, Tom La Porta, Wensheng Zhang
Recently there has been a great deal of research on using mobility in sensor networks to assist in the initial deployment of nodes. Mobile sensors are useful in this environment because they can move...
On Supporting Power-Efficient Streaming Applications in Wireless Environments (2005)
Reducing the power consumption of the wireless network interface (WNI) is an effective way to prolong the battery lifetime of the mobile terminal. It takes some time for the WNI to transit from the...
When a sensor network is deployed in hostile environments, the adversary may compromise some sensor nodes, and use the compromised nodes to inject false sensing reports or modify the reports sent by...
Hui Song, Sencun Zhu, Wensheng Zhang, Guohong Cao
Mobile sinks are needed in many sensor network applications for efficient data collection, data querying, localized sensor reprogramming, identifying, and revoking compromised sensors, and other...
Movement-assisted sensor deployment (2004)
Guiling Wang, Student Member, Guohong Cao
Abstract—Adequate coverage is very important for sensor networks to fulfill the issued sensing tasks. In many working environments, it is necessary to make use of mobile sensors, which can move to...
Sunho Lim, Wang-chien Lee, Guohong Cao, Chita R. Das
Internet-based mobile ad hoc network (IMANET) combines a mobile ad hoc network (MANET) and the Internet to provide universal information accessibility. Although caching frequently accessed data items...
Adaptive power-aware prefetch in wireless networks (2004)
Liangzhong Yin, Student Member, Guohong Cao
Abstract — Most of the prefetch techniques used in the current cache management schemes do not consider power constraints of the mobile clients and other factors such as the size of the data items,...
Processing Range-Monitoring Queries on Heterogeneous Mobile Objects (2004)
Ying Cai, Kien A. Hua, Guohong Cao
We consider in this paper how to leverage heterogeneous mobile computing capability for efficient processing of real-time range-monitoring queries. In our environment, each mobile object is...
Supporting Cooperative Caching in Ad Hoc Networks (2004)
Most researches in ad hoc networks focus on routing, and not much work has been done on data access. A common technique used to improve the performance of data access is caching. Cooperative caching,...
Optimizing Tree Reconfiguration for Mobile Target Tracking in Sensor Networks (2004)
Sensor nodes have limited sensing range and are not very reliable. To obtain accurate sensing data, many sensor nodes should be deployed and then the collaboration among them becomes an important...
DCTC: Dynamic Convoy Tree-Based Collaboration for Target Tracking in Sensor Networks (2004)
Wensheng Zhang, Student Member, Guohong Cao, Associate Member
Most existing work on sensor networks concentrates on finding efficient ways to forward data from the information source to the data centers, and not much work has been done on collecting local data...
On Improving the Performance of IEEE 802.11 with Relay-Enabled PCF (2004)
Integrating wireless LAN (WLAN) techniques with the third generation cellular networks has become a promising way to improve the performance of wireless systems. As WLANs play an important role in...
Secure Cooperative Cache Based Data Access in Ad Hoc Networks (2004)
Wensheng Zhang, Liangzhong Yin, Guohong Cao
Cooperative caching, which allows the sharing and coordination of cached data among multiple nodes, can be used to improve the performance of data access in ad hoc networks. When caching is used,...
Dynamic Proxy Tree-Based Data Dissemination Schemes for Wireless Sensor Networks (2004)
Wensheng Zhang, Guohong Cao, Tom La Porta
In wireless sensor networks, efficiently disseminating data from a dynamic source to multiple mobile sinks is important for applications such as mobile target detection and tracking. The tree-based...
Liangzhongyin Guohong Cao, Liangzhong Yin, Guohong Cao, Ying Cai
frequentlyaccesnt dataitems on the clientsie is an effective technique to improve these/k; performance inwireles networks Due to cachesch limitations cache replacementalgorithms are us/ to find...
A Power-Aware and QoS-Aware Service Model on Wireless Networks (2004)
Many studies show that the wireless network interface (WNI) accounts for a significant part of the power consumed by mobile terminals. Thus, putting the WNI into sleep when it is idle is an effective...
Adaptive power-aware prefetch in wireless networks (2004)
Liangzhong Yin, Student Member, Guohong Cao
Most of the prefetch techniques used in the current cache management schemes do not consider power constraints of the mobile clients and other factors such as the size of the data items, the data...
Balancing the Tradeoffs between Data Accessibility and Query Delay in Ad Hoc Networks (2004)
In mobile ad hoc networks, nodes move freely and link/node failures are common. This leads to frequent network partitions, which may significantly degrade the performance of data access in ad hoc...
DCTC: Dynamic Convoy Tree-Based Collaboration for Target Tracking in Sensor Networks (2004)
Most existing work on sensor networks concentrates on finding efficient ways to forward data from the information source to the data centers, and not much work has been done on collecting local data...
Supporting Cooperative Caching in Ad Hoc Networks (2004)
Most researches in ad hoc networks focus on routing, and not much work has been done on data access. A common technique used to improve the performance of data access is caching. Cooperative caching,...
Processing Range-Monitoring Queries on Heterogeneous Mobile Objects (2004)
Ying Cai, Kien A. Hua, Guohong Cao
We consider in this paper how to leverage heterogeneous mobile computing capability for efficient processing of real-time range-monitoring queries. In our environment, each mobile object is...
DCTC: Dynamic Convoy Tree-Based Collaboration for Target Tracking in Sensor Networks (2004)
Most existing work on sensor networks concentrates on finding efficient ways to forward data from the information source to the data centers, and not much work has been done on collecting local data...
www.elsevier.com/locate/comcom Cache-miss-initiated prefetch in mobile environments (2004)
Prefetching has been widely used to improve system performance in mobile environments. Since prefetching consumes system resources, such as bandwidth and power, it is important to consider the system...
Sunho Lim, Wang-chien Lee, Guohong Cao, Chita R. Das
Internet-based mobile ad hoc network (IMANET) combines a mobile ad hoc network (MANET) and the Internet to provide universal information accessibility. Although caching frequently accessed data items...
A Bidding Protocol for Deploying Mobile Sensors (2003)
Guiling Wang, Guohong Cao, Piotr Berman, Thomas F. Laporta
Adequate coverage is very important for sensor networks to fulfill sensing tasks. In many working environments, it is necessary to make use of mobile sensors to provide the required coverage. We...
Data Dissemination with Ring-Based Index for Wireless Sensor Networks (2003)
Wensheng Zhang, Guohong Cao, Tom La Porta
In wireless sensor networks, sensor nodes are capable of not only measuring real world phenomena, but also storing, processing and transferring these measurements. Many techniques have been proposed...
Abstract. Next generation high-speed cellular networks are expected to support multimedia applications, which require QoS provisions. Since frequency spectrum is the most expensive resource in...
Data Dissemination with Ring-Based Index for Sensor Networks (2003)
Wensheng Zhang, Guohong Cao, Tom La Porta
In current sensor networks, sensor nodes are capable of not only measuring real world phenomena, but also storing, processing and transferring these measurements. Many data dissemination techniques...
Data Dissemination with Ring-Based Index for Sensor Networks (2003)
Wensheng Zhang, Guohong Cao, Tom La
Abstract In current sensor networks, sensor nodes are capable of not only measuring real world phenomena, butalso storing, processing and transferring these measurements. Many data dissemination...
Online variable-bit-rate video traffic smoothing (2003)
Guohong Cao, Wu-chi Feng, Mukesh Singhal
The efficient transmission of variable-bit-rate (VBR) video streams is complicated by the burstiness that video compression standards such as MPEG introduce. Most of the existing techniques...
A scalable low-latency cache invalidation strategy for mobile environments (2003)
Abstract—Caching frequently accessed data items on the client side is an effective technique for improving performance in a mobile environment. Classical cache invalidation strategies are not...
Secure routing in ad hoc networks and a related intrusion detection problem (2003)
Wensheng Zhang, R. Rao, Guohong Cao, George Kesidis
The intrinsic nature of wireless ad hoc networks makes them vulnerable to various passive or active attacks. Thus, there is no guarantee that a routed communication path is free of malicious nodes...
A Novel Caching Scheme for Internet based Mobile Ad Hoc Networks (2003)
Wang-chien Lee, Guohong Cao, Chita R. Das
Internet based mobile ad hoc network (IMANET) is an emerging technique that combines a wired network (e.g. Internet) and a mobile ad hoc network (MANET) for developing a ubiquitous communication...
On Supporting Distributed Collaboration In Sensor Networks (2003)
Guiling Wang Wensheng, Guiling Wang, Wensheng Zhang, Guohong Cao, Tom La Porta
In sensor networks, nodes may malfunction due to the hostile environment. Therefore, dealing with node failure is a very important research issue. In this paper, we study distributed cooperative...
A Bidding Protocol for Deploying Mobile Sensors (2003)
Guiling Wang Guohong, Guiling Wang, Guohong Cao, Tom Laporta
In some harsh environments, manually deploying sensors is impossible. Alternative methods may lead to imprecise placement resulting in coverage holes. To provide the required high coverage in these...
A Generalized Target-Driven Cache Replacement Policy for Mobile Environments (2003)
Liangzhong Yin, Guohong Cao, Ying Cai
is an effective technique to improve the system performance in a mobile environment. Due to cache size limitations, cache replacement algorithms are used to find a suitable subset of items for...
A Scalable Low-Latency Cache Invalidation (2003)
Strategy For Mobile, Guohong Cao
Caching frequently accessed data items on the client side is an effective technique for improving performance in a mobile environment. Classical cache invalidation strategies are not suitable for...
Movement-Assisted Sensor Deployment (2003)
Guiling Wang Student, Guiling Wang, Student Member, Guohong Cao
Adequate coverage is very important for sensor networks to fulfill the issued sensing tasks. In many working environments, it is necessary to make use of mobile sensors, which can move to the correct...
Data Dissemination with Ring-Based Index for Wireless Sensor Networks (2003)
Wensheng Zhang, Guohong Cao, Tom La Porta
In current sensor networks, sensor nodes are capable of not only measuring real world phenomena, but also storing, processing and transferring these measurements. Many data dissemination techniques...
Data Dissemination with Ring-Based Index for Wireless Sensor Networks (2003)
Wensheng Zhang, Guohong Cao, Tom La Porta
In current sensor networks, sensor nodes are capable of not only measuring real world phenomena, but also storing, processing and transferring these measurements. Many data dissemination techniques...
A Generalized Target-driven Cache Replacement Policy for Mobile Environments (2003)
Liangzhong Yin, Guohong Cao, Ying Cai
Caching frequently accessed data items on the client side is an effective technique to improve the system performance in wireless networks. Due to cache size limitations, cache replacement algorithms...
Yanyong Zhang, Yanyong Zhang, Guohong Cao, Hubertus Franke, Raj Acharya
Clusters of workstations built with off-the-shelf hardware, are playing an important role in mainstream high performance computing. A wide range of applications are running on clusters, ranging from...
An adaptive powerconserving service discipline for bluetooth (2002)
Hao Zhu, Guohong Cao, George Kesidis, Chita Das
Abstract — Bluetooth is a new short-range radio technology to form a small wireless system. In most of the current Bluetooth products, the master polls the slaves in a Round Robin manner and it may...
On Improving the Performance of Cache Invalidation in Mobile Environment (2002)
Abstract. Many cache management schemes designed for mobile environments are based on invalidation reports (IRs). However, IR-based approach suffers from long query latency and it cannot efficiently...
Power-Aware Prefetch in Mobile Environments (2002)
Liangzhong Yin Guohong, Guohong Cao, Chita Das, Ajeesh Ashraf
Most of the prefetch techniques used in the current cache management schemes do not consider the power constraints of the mobile clients and other factors such as the size of the data items, the data...
Proactive power-aware cache management for mobile computing systems (2002)
AbstractÐRecent work has shown that invalidation report (IR)-based cache management is an attractive approach for mobile environments. However, the IR-based cache invalidation solution has some...
An adaptive powerconserving service discipline for bluetooth (2002)
Hao Zhu, Guohong Cao, George Kesidis, Chita Das
www.elsevier.com/locate/comcom
A Delay-Optimal Quorum-Based Mutual (2001)
Exclusion Algorithm For, Guohong Cao, Mukesh Singhal
this paper, we propose a delay-optimal quorum-based mutual exclusion algorithm which reduces the synchronization delay to # and still has a low message complexity of #### (# is the size of the quorum...
Mutable checkpoints: A new checkpointing approach for mobile computing systems (2001)
AbstractÐMobile computing raises many new issues such as lack of stable storage, low bandwidth of wireless channel, high mobility, and limited battery life. These new issues make traditional...
Distributed fault-tolerant channel allocation for cellular networks (2000)
Guohong Cao, Associate Member, Mukesh Singhal, Senior Member
Abstract—A channel allocation algorithm includes a channel acquisition algorithm and a channel selection algorithm. Most of the previous work concentrates on the channel selection algorithm since...
Efficient Distributed Channel Allocation for Mobile Cellular Networks (1998)
There are two approaches to design a distributed channel allocation algorithms: Search and Update. The update approach has shorter acquisition delay and lower call blocking rate, but higher message...
On Consistent Checkpointing in Distributed Systems (1997)
Consistent checkpointing simplifies failure recovery and eliminates the domino effect in case of failure by preserving a consistent global checkpoint on the stable storage. However, the approach...
An Efficient Coterie-Based Mutual Exclusion Scheme With Fault-tolerance Capability (1996)
Guohong Cao, Mukesh Singhal, Yi Deng, Naphtali Rishe, Wei Sun
The performance of a mutual exclusion algorithm is measured by the number of messages exchanged per critical section execution and the delay between successive executions of the critical section....
Journal of Parallel and Distributed Computing 60, 451473 (2000) (1996)
An Adaptive Distributed, Guohong Cao, Mukesh Singhal
this paper, we propose a novel distributed channel acquisition algorithm, which is a significant improvement over both approaches. Also, we identify two guiding principles in designing channel...
In Distributed Systems, Guohong Cao, Student Member, Mukesh Singhal
Coordinated checkpointing simplifies failure recovery and eliminates domino effects in case of failures by preserving a consistent global checkpoint on stable storage. However, the approach suffers...