C를 이용한 IEEE 802.15.4 Zigbee Simulator 직비 (지그비) 시뮬레이터

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C를 이용한 IEEE 802.15.4 Zigbee Simulator 직비 (지그비) 시뮬레이터에 대한 보고서 자료입니다.

목차

1. Qualitative Analysis of IEEE 802.15.4 Protocol

1.1. The fundamentals of IEEE 802.15.4 specifications.
1.1.1. Describe the roles, functions, or ability of the following three device type.
1.1.1.1. PAN Coordinator
1.1.1.2. Full function device (FFD)
1.1.1.3. Reduced function device (RFD)
1.1.2. Describe the features of network topologies and compare the merits and demerits of each network configuration.
1.1.2.1. Star
1.1.2.2. Peer to peer
1.1.2.3. Cluster tree
1.1.3. Describe the features, roles, or operations of each period in the superframe structure.
1.1.3.1. Beacon period
1.1.3.2. Contention access period (CAP)
1.1.3.3. Contention free period (CFP)
1.1.4. Describe the header’s (and footer’s) information of various frame structures in detail.
1.1.4.1. Beacon frame
1.1.4.2. Data frame
1.1.4.3. Acknowledgement frame
1.1.4.4. MAC command frame
1.1.5. Describe the following features and functions of physical layer:
1.1.5.1. Operating frequency bands and their parameters (modulation and bit/chip/symbol rate)
1.1.5.2. The detailed format of PHY protocol data unit (PPDU)
1.1.5.3. The reason why a node performs clear channel assessment (CCA) and the detailed methods of CCA
1.1.6. Describe the following features and functions of MAC layer:
1.1.6.1. CSMA/CA algorithm in the CAP
1.1.6.2. The method for association and disassociation
1.1.6.3. The method for transmission, reception, and acknowledgement
1.1.6.4. The method for guaranteed time slot (GTS) allocation and usage

1.2. The procedures of MAC functions
1.2.1. Describe the detailed procedures of data transfer needing acknowledgements. And, explain the message sequence chart between up and down layers or between two nodes, the appropriate
primitives, and bit-setting information of the frame header.
- Data transfer in the contention access period (CAP)
- Data transfer in the contention free period (CFP)
* Include the procedures that a node requests guaranteed time slot (GTS) to the PAN coordinator and the PAN coordinator informs the information of the assigned GTS to a node.
1.2.2. Describe the detailed procedures of association and disassociation. And, explain the message sequence chart between up and down layers or between two nodes, the appropriate primitives,
and bit-setting information of the frame header.

1.3. Open Issues
1.3.1. One superframe is composed of the beacon period, the contention access period (CAP), the contention free period (CFP), and the inactive period. Why are these peiords necessary? Please explain the underlying philosophy in the superframe structure.

1.3.2. Is it possible that the real-time video traffic can be transferred well through the low-rate WPAN (IEEE 802.15.4)?
1.3.2.1. If possible, explain the environments can support the real-time video traffic i.e. how system parameters (SO, BO, …) are set, which period that video service can be supported in, etc.
1.3.2.2. If not possible, investigate the improvements to support the real-time video traffic.
1.3.3. Under the situations mixed with real time services and non-real timeservices, investigate how to guarantee their QoS.
1.3.4. Survey two papers about power saving on MAC layer for sensor networks and describe the power saving mechanisms.
1.3.4.1. What are the merits and demerits of the power saving methods, compared with those of IEEE 802.15.4?
1.3.4.2. Investigate the possible improvements and present your own enhanced power saving mechanism.
1.3.5. What are the differences between CSMA/CA in WLAN and CSMA/CA in low-rate WPAN (IEEE 802.15.4)? Discuss the merits and demerits.
1.3.6. Investigate the procedures of a channel search (scan) methodover the frequency channels to start the new PAN or to associate the specific PAN.
1.3.7. Investigate how to efficiently allocate GTS in the CFP.

2. Quantitative Analysis of IEEE 802.15.4 Protocol

본문내용

1.1. The fundamentals of IEEE 802.15.4 specifications.
1.1.1. Describe the roles, functions, or ability of the following three device type.
◦A system conforming to IEEE 802.15.4 consists of several components. The most basic is the device. A device can be an RFD or an FFD. Two or more devices within a POS communicating on the same physical channel constitute a WPAN. However, a network shall
include at least one FFD, operating as the PAN coordinator.
◦An IEEE 802.15.4 network is part of the WPAN family of standards although the coverage of an LR-WPAN may extend beyond the POS, which typically defines the WPAN.
◦A well-defined coverage area does not exist for wireless media because propagation characteristics are dynamic and uncertain. Small changes in position or direction may result in drastic differences in the signal strength or quality of the communication link. These effects occur whether a device is stationary or mobile as moving objects may impact station-to-station propagation.
1.1.1.1. PAN Coordinator
◦An full-function device (FFD) that is configured to provide synchronization services through the transmission of beacons. If a coordinator is the principal controller of a personal
area network (PAN), it is called the PAN coordinator.
◦A coordinator that is capable of replacing the personal area network (PAN) coordinator, should it leave the network for any reason. A PAN can have zero or more alternate PAN
coordinators.
1.1.1.2. Full function device (FFD)
◦A device capable of operating as a coordinator or device and implementing the complete protocol set.
◦The FFD can operate in three modes serving as a personal area network (PAN) coordinator, a coordinator, or a device. An FFD can talk to RFDs or other FFDs, while an RFD can talk only to an FFD.
1.1.1.3. Reduced function device (RFD)
◦A device operating with a minimal implementation of the IEEE 802.15.4 protocol.
◦An RFD is intended for applications that are extremely simple, such as a light switch or a passive infrared sensor; they do not have the need to send large amounts of data and may only associate with a single FFD at a time. Consequently, the RFD can be implemented using
minimal resources and memory capacity.
1.1.2. Describe the features of network topologies and compare the merits and demerits of each network configuration.

키워드

Zigbee,   직비,   지그비,   시뮬레이터,   simulator,   IEEE 802.15.4,   비주얼 C