SCHOOL DETAILS AND FORMATS
COURSE SUBJECT: WIRELESS COMMUNICATION
COURSE CODE: BBIT 444
NAME: RWANKOLE EXPEDITO
REG NO: BIT-1-3098-2-2012
Take away job duo on 15/11/2014
1 . Explain the main element features of the reduced Rate Wireless Personal Place Networks (LR-WPAN) as identified in the IEEE 802. 15. 4 standard. (3 Marks)
Ultra-low complexness, and power for low-data-rate wireless on-line among economical fixed, lightweight, and moving devices.
Wireless personal region networks (WPANs) are used to convey information over comparatively short distances.
WPANs are focused on a space around a person or target that commonly extends approximately 10m all around. WPANs is definitely low-cost, low power, short range and extremely small size Maximum data rates brought about each of these rate of recurrence bands will be fixed while 250 killerbytes per second @2. 4 GHz, forty five kbps @ 915 Megahertz, and twenty kbps @868 MHz. пЂ Allocated 16 little bit short or 64 tad extended details.
пЂ Allocation of guaranteed time slots (GTSs)
пЂ Carrier perception multiple get with accident avoidance (CSMA-CA) channel gain access to Yields substantial throughput and low latency for low duty routine devices just like sensors and controls. Totally " hand-shakeвЂќ acknowledged protocol for transfer reliability. Low power consumption with battery-life ranging from weeks to years. Energy recognition (ED).
Hyperlink quality signal (LQI).
2 . 4GHz and 868/915 Megahertz dual PHY modes.
пЂ This represents 3 license-free bands: 2 . 4-2. 4835 Gigahertz, 868-870 Megahertz and 902- 928 Megahertz. The number of programs allotted with each frequency group is fixed at 18 channels in the 2 . 45 GHz strap, 10 channels in the 915 MHz group, and one particular channel inside the 868 MHz band.
installment payments on your The IEEE 802. 12-15. 4 standard for LR-WPAN defines only the physical part and the press access part. Explain for what reason. (3 Marks)
because The Physical layer provides main two services: the Physical data service and...