Avoiding Collisions Between IEEE 802.11 and IEEE 802.15.4 Using Coexistence Inter-Frame Space
Recently, more and more wireless networks have been deployed and start provide varies services to customers. Such as smart-phones integrate heterogeneous wireless devices, it may cause unintended interactions between multiple radios using difference radio
- PDF / 1,860,487 Bytes
- 9 Pages / 439.37 x 666.142 pts Page_size
- 28 Downloads / 181 Views
Abstract Recently, more and more wireless networks have been deployed and start provide varies services to customers. Such as smart-phones integrate heterogeneous wireless devices, it may cause unintended interactions between multiple radios using difference radio access technologies. Thus, heterogeneous wireless network will be the trend of future network. The Co-channel interference problem in heterogeneous wireless networks is more and more important. This paper focus on the coexistence problem between IEEE 802.11b/g/n and IEEE 802.15.4 protocols in the ISM 2.4 GHz band. The performance impact on IEEE 802.15.4 network under IEEE 802.11 wireless network has been analysis, and results show that IEEE 802.15.4 has serious collision problem if there has no appropriate scheduling mechanisms among two wireless protocols. A CIFS (Coexistence InterFrame Space) has been proposed in this paper to effectively enhance the IEEE 802.15.4 transmission probability which is implemented in IEEE 802.11 nodes to
T.-H. Lee M.-C. Hsieh L.-H. Chang (&) H.-S. Chiang C.-H. Wen Department of Computer Science, National Taichung University of Education, Taichung, Taiwan, Republic of China e-mail: [email protected] T.-H. Lee e-mail: [email protected] M.-C. Hsieh e-mail: [email protected] H.-S. Chiang e-mail: [email protected] C.-H. Wen e-mail: [email protected] K. M. Yap Department of Computer Science and Networked Systems, Sunway University, Bandar Sunway, Malaysia e-mail: [email protected]
Y.-M. Huang et al. (eds.), Advanced Technologies, Embedded and Multimedia 1185 for Human-centric Computing, Lecture Notes in Electrical Engineering 260, DOI: 10.1007/978-94-007-7262-5_135, Springer Science+Business Media Dordrecht 2014
1186
T.-H. Lee et al.
observe the transmission opportunity for IEEE 802.15.4 under wireless coexistence environment.
Keywords IEEE 802.11 IEEE 802.15.4 Coexistence Co-channel interference
Introduction Increasingly devices are equipped with multiple radio interfaces. This is due to the decreasing cost and size of radio embedded technology and the increasing demand from end-users. Thus, heterogeneous wireless networks are currently receiving a significant amount of interest in research. This paper focuses on the co-channel interference between IEEE 802.11 b/g/n [1–3] and IEEE 802.15.4 [4] protocols in the ISM 2.4 GHz band. In Fig. 1, the IEEE 802.11b/g has eleven channels between 2.412 and 2.462 GHz [5]. Each channel occupies 22 MHz and up to 3 separate channels can be simultaneously used without any mutual interference. In the other hand, the IEEE 802.15.4 has sixteen channels between 2.4 and 2.4835 GHz. Each channel occupies 3 MHz. The IEEE 802.15.4 will suffer serious interference problems from IEEE 802.11 if there is no proper arrangement for the mutual scheduling mechanism. Thus, the goal of this research is try to improve the performance of IEEE 802.15.4 in the heterogeneous wireless network environment. Furthermore, it can explore to three different interfe
Data Loading...
