Coexistence study for WiFi and ZigBee under smart home scenarios

Author

Ting Han ; Bingjun Han ; Ling Zhang ; Xin Zhang ; Dacheng Yang

Author_Institution

Wireless Theor. & Technol. (WT&T) Lab, Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2012

fDate

21-23 Sept. 2012

Firstpage

669

Lastpage

674

Abstract

WiFi and ZigBee are regarded as key technologies of smart home, they support complementary applications in terms of data rate and serving range. Since both WiFi and ZigBee are operating over 2.4GHz Industrial, Scientific, Medical(ISM) band. And their devices are possibly close to each other for huge number of sensors or controllers in smart home scenario. The coexistence between WiFi and ZigBee system under smart home scenario is a critical issue. In this paper, an overview of WiFi-ZigBee interference analysis methodology, modeling of CSMA/CA mechanism and detailed coexistence issues under smart home scenario are introduced. Afterwards, two representative network deployment cases are simulated and discussed from their Clear Channel Assessment (CCA) mode and device distribution density. Results indicate that ZigBee system can work normally under the interference of WiFi deployed in the adjacent frequency band, if proper CCA mode is applied.

Keywords

Zigbee; carrier sense multiple access; radiofrequency interference; wireless LAN; CSMA/CA mechanism; ISM band; Industrial, Scientific, Medical band; WiFi-ZigBee interference analysis; adjacent frequency band; clear channel assessment mode; data rate; device distribution density; frequency 2.4 GHz; representative network deployment cases; serving range; smart home scenarios; Bit error rate; IEEE 802.11 Standards; Interference; Markov processes; Smart homes; Throughput; Zigbee; WiFi; ZigBee; interference coexistence study; smart home;

fLanguage

English

Publisher

ieee

Conference_Titel

Network Infrastructure and Digital Content (IC-NIDC), 2012 3rd IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4673-2201-0

Type

conf

DOI

10.1109/ICNIDC.2012.6418840

Filename

6418840