The Experts below are selected from a list of 17286 Experts worldwide ranked by ideXlab platform
Mário Alves - One of the best experts on this subject based on the ideXlab platform.
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Open-ZB: An open-source implementation of the IEEE 802.15.4/ZigBee Protocol Stack on TinyOS
2007 IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems, MASS, 2007Co-Authors: André Cunha, Robert Severino, Anis Koubâa, Mário AlvesAbstract:The IEEE 802.15.4/ZigBee Protocols are gaining increasing interests in both research and industrial communities as candidate technologies for Wireless Sensor Network (WSN) applications. In this paper, we present an open-source implementation of the IEEE 802.15.4/ZigBee Protocol Stack under the TinyOS operating system for the MICAz and TelosB motes. This work has been driven by the need for an open- source implementation of the IEEE 802.15.4/ZigBee Protocols, filling a gap between some newly released complex C implementations and black-box implementations from different manufacturers. In addition, we share our experience on the challenging problems that we have faced during the implementation of the Protocol Stack. We strongly believe that this open-source implementation will potentiate research works on the IEEE 802.15.4/ZigBee Protocols, allowing their demonstration and validation through experimentation.
Gang Bao - One of the best experts on this subject based on the ideXlab platform.
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performance evaluation of tcp rlp Protocol Stack over cdma wireless link
Wireless Networks, 1996Co-Authors: Gang BaoAbstract:Due to the high frame error rate in wireless communication channels, an additional link layer Protocol, Radio Link Protocol (RLP), has been introduced in the newly approved Data Services Option Standard for Wideband Spread Spectrum Digital Cellular System. In this paper, we investigate performance issues of a typical Cod Division Multiple Access (CDMA) wireless link using the Protocol Stack given in the standard. In particular, we focus on the dynamics of the TCP and RLP layers of the Protocol Stack since the fluctuation of systemperformance is largely caused by Automatic Repeat Request (ARQ) mechanisms implemented at these two layers. We compare the network performance of default parameter setting to those of other possible parameter settings. Analytical and simulation results presented in this paper can provide guidance to those attempting to further improve performance of interest.
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performance evaluation of tcp rlp Protocol Stack over cdma wireless link
International Conference on Communication Technology, 1996Co-Authors: Gang BaoAbstract:In this paper, we study the system performance of a typical code division multiple access (CDMA) wireless link using a Protocol Stack in the newly approved data services option standard for wideband spread spectrum digital cellular systems. In particular, we focus on the TCP (transport control Protocol) and RLP (radio link Protocol) of the Protocol Stack since the fluctuation of system performance is largely caused by automatic repeat request (ARQ) mechanisms implemented at these two layers. Analytical and simulation results presented here may provide guidance to those attempting to further improve performance of interest.
André Cunha - One of the best experts on this subject based on the ideXlab platform.
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Open-ZB: An open-source implementation of the IEEE 802.15.4/ZigBee Protocol Stack on TinyOS
2007 IEEE Internatonal Conference on Mobile Adhoc and Sensor Systems, MASS, 2007Co-Authors: André Cunha, Robert Severino, Anis Koubâa, Mário AlvesAbstract:The IEEE 802.15.4/ZigBee Protocols are gaining increasing interests in both research and industrial communities as candidate technologies for Wireless Sensor Network (WSN) applications. In this paper, we present an open-source implementation of the IEEE 802.15.4/ZigBee Protocol Stack under the TinyOS operating system for the MICAz and TelosB motes. This work has been driven by the need for an open- source implementation of the IEEE 802.15.4/ZigBee Protocols, filling a gap between some newly released complex C implementations and black-box implementations from different manufacturers. In addition, we share our experience on the challenging problems that we have faced during the implementation of the Protocol Stack. We strongly believe that this open-source implementation will potentiate research works on the IEEE 802.15.4/ZigBee Protocols, allowing their demonstration and validation through experimentation.
Bernd Girod - One of the best experts on this subject based on the ideXlab platform.
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cross layer design of ad hoc networks for real time video streaming
IEEE Wireless Communications, 2005Co-Authors: Eric Setton, Taesang Yoo, Xiaoqing Zhu, Andrea Goldsmith, Bernd GirodAbstract:Cross-layer design breaks away from traditional network design where each layer of the Protocol Stack operates independently. We explore the potential synergies of exchanging information between different layers to support real-time video streaming. In this new approach information is exchanged between different layers of the Protocol Stack, and end-to-end performance is optimized by adapting to this information at each Protocol layer. We discuss key parameters used in the cross-layer information exchange along with the associated cross-layer adaptation. Substantial performance gains through this cross-layer design are demonstrated for video streaming.
Jinglin Shi - One of the best experts on this subject based on the ideXlab platform.
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Efficient design and implementation of LTE UE link-layer Protocol Stack
2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013Co-Authors: Manli Qian, Y.b Huang, Yiqing Zhou, Yuanyuan Wang, Wei Wei, Jinglin ShiAbstract:3GPP Long Term Evolution (LTE) and its enhancement has become the main candidate of 4G standards. Due to the requirements on high data rate and low latency for broadband wireless communication systems, LTE air-interface Protocol Stack must be designed and implemented with high data processing efficiency. Following a general description of the LTE user equipment (TIE), this paper analyzes the main challenges in the link-layer Protocol Stack design and implementation, including the data processing efficiency, synchronization, flexibility and portability. A reference design of LTE TIE link-layer Protocol Stack software is then presented with several design methodologies. A memory access optimization and light-weighted thread model are proposed to improve the data processing efficiency, while a hardware triggered synchronization mechanism is exploited to maintain synchronous between the link-layer Protocol Stack and the physical layer. Finally, the platform flexibility and portability is achieved by employing interface abstraction and adapters. Extensive system level testing shows that the proposed LTE TIE Protocol Stack software achieves high data rate and low data processing latency in a hardware resource restricted platform, which can be further extended to commercial LTE TIE products.
