MAC Protocol Design for Impulse Radio UWB Based WPANs

Obeid, D.; Sheeshia, S.

doi:10.1109/lcn.2007.105

Cited by 3 publications

(4 citation statements)

References 16 publications

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“…Set the spreading codes of transmitter node and interfere node are orthogonal, the chip duration T c equals to the pulse width T m and bandwidth W is approximately 1.11/T m , then we can get N h =W/R/1.11 for (5). We use MATLAB to find the simulation results as follows.…”

Section: Discussion Of Optimal Collision Domainmentioning

confidence: 99%

“…Effective MAC design must take full account of the physical layer. As for UWB system with a very wide bandwidth and high communication speed, some MAC protocols have been proposed by domestic and foreign researchers [1][2][3][4][5][6][7][8][9], but most of them don't take characteristics of UWB into account, so they are not fully applicable to UWB system. A concurrent transmissions-MAC (CT-MAC) [10] is proposed by Peng-Yong Kong in 2005 and it can reflect characteristics of UWB MAC layer.…”

Section: Introductionmentioning

confidence: 99%

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A MAC protocol with power control for DS-UWB communication system

Tao

Wang

et al. 2014

2014 12th International Conference on Signal Processing (ICSP)

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This paper studies a concurrent transmissions MAC (CT-MAC) protocol with power control and improves the best value of collision domain to make it more suitable for direct sequence ultra-wideband (DS-UWB) system. CT-MAC protocol realizes multi-channel transmission by identifying users with different spreading codes. In CT-MAC protocol, nodes of network calculate collision domain each time when they receive packets. The range of collision domain will decrease when bandwidth increases, therefore, when CT-MAC protocol is used in UWB communication, the number of concurrent nodes becomes large and the network will have a better performance. Energy problem is the common problem of physical layer and MAC layer. Therefore, this paper gives a power saving scheme of the MAC layer to determine the sending power of DATA and ACK packets to reduce the power consumption of network by the information exchange in RTS and CTS control packets between two communicating nodes.

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Section: Discussion Of Optimal Collision Domainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A MAC protocol with power control for DS-UWB communication system

Tao

Wang

et al. 2014

2014 12th International Conference on Signal Processing (ICSP)

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“…In our previous research, we proposed a Superframe structure in [7] to cope with the data transmission in WPAN area. Based on the concept, we propose a new Superframe structure (see Figure 5.)…”

Section: Superframementioning

confidence: 99%

“…The mechanism enables connection-oriented data communications and expedites multi-hop transmissions so as to dramatically enhance channel utilization efficiency. The proposed approach utilizes part of our previous research, i.e., Self-organizing Device discovery and Data transmission (SDD) protocol [8] and the Superframe structure proposed in [7].…”

Section: Introductionmentioning

confidence: 99%

Multi-hop IR-UWB WPAN Architecture and Protocols

Shi

Niemegeers

2009

2009 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications

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As described in the scope of the IEEE 802.15 working group, Impulse Radio Ultra Wide Band (IR-UWB) is suitable for many Wireless Personal Area Network (WPAN) applications. Due to the short radio coverage of the UWB technology limited by the FCC regulations, IR-UWB devices that participate in a WPAN may not be always reachable within the single hop. The multi-hop capability will be a substantial requirement in IR-UWB based WPAN networks for diverse application scenarios. However, the existing WPAN solutions most target for the single-hop network and the IR-UWB physical features are rarely taken into account in the protocol design. In our research, we focus on how to incorporate IR-UWB devices into a multi-hop WPAN and how to realize data communication between any pair of nodes in the WPAN. The generic network architecture and new data link layer protocols are proposed for solving the multi-hop connectivity problem as well as being optimized for IR-UWB physical features. The approach enables connection oriented transmissions by explicitly scheduling on forwarding paths so as to enhance channel utilization efficiency. The approach fills a research gap between the specific IR-UWB applications and the existing WPAN standards. IntroductionThe IR-UWB technology continues to receive much attention in the standardization activities of IEEE 802.15 (WPAN) addressing wireless networking of portable and mobile computing devices. The potential applications of IR-UWB WPANs cover home multimedia applications, factory automations, home health monitoring and telecom applications, etc. Due to FCC power regulation for UWB communications, the high data rate is only possible in a short-range (about 10m). For a distance over 10m, several hops must be applied for communications without increasing the power and interference level. To apply IR-UWB devices to WPAN scenarios with diverse date rate requirements imply that the WPAN protocol should be able to cope with multi-hop communications.The existing WPAN solutions most focus on singlehop applications. As an example, in a Piconet defined in IEEE 802.15.3 [2], the functions of synchronization, data request registration and channel time assignment are organized by a Piconet Coordinator (PNC). In a multi-hop scenario, the PNC node has to assign part of

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