báo cáo hóa học: " Handoff optimization in 802 11 wireless networks" pot

... Access Handoff optimization in 802. 11 wireless networks IP Hsieh and Shang-Juh Kao * Abstract In 802. 11 wireless networks, a complete handoff procedure for a mobile node requires access point (AP) ... access point (AP). In order to reduce the time in processing a handoff, its operations must be integrated across layers. Even though lower-laye r protocols involved i...

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 21/06/2014, 01:20

... Mukherjee was born in Banga- lore, India, in 1970. He received the Bach- elor of Technology degree in electrical en- gineering from the Indian Institute of Tech- nology, Kanpur, India, in 1991, and ... substantial gain in sys- tem throughput by optimizing the processing done in the cooperative relays and in the scheduling of retrans- missions by the relays so as to minimize mutu...

Ngày tải lên: 22/06/2014, 22:20

... by increasing spectrum size when the spectrum demand increase, it maintai ns QoS by bringing blocking probabilities back to its constrained range by incr easing the spectrum price. Figure 11 ... sharing in wireless networks: a dynamic non-cooperative game approach. Wireless and Mobile Networking, IFIP Advances in Information and Communication Technology, vol. 308 (Springer, Berlin,...

Ngày tải lên: 21/06/2014, 02:20

... regulating the innate and adap- tive immune systems. Cytokines are thus upregulated in the brain in a variety of diseases, including stroke. In the brain, cytokines are expressed not only in the ... Medicine 2009, 7:97 http://www.translational-medicine.com/content/7/1/97 Page 9 of 11 (page number not for citation purposes) insulin-like growth factor I; IL: interleukin; IL-1R: inter-...

Ngày tải lên: 18/06/2014, 15:20

... that the brain may control limb kinematics in a reaching task by shifting the equilibrium points [53] or creating a "vir- tual trajectory" of the end-point [54], instead of scaling individual ... design intuitive forms of feeding back integrated sensor information to avoid over- loading patients' perceptions. In general, investigators should determine the factors contributi...

Ngày tải lên: 19/06/2014, 10:20

... mak- ing and execution in practice. Numerous factors can be involved in athletes' decisions to use supplements including desired end points such as increasing strength, endurance, training ... enhance- ment and/or health maintenance [10,15,34-37] includ- ing: caffeine, ephedrine, creatine, whey protein, antioxidants, ginseng, multivitamins, vitamin C, iron, Echinacea and magnesium su...

Ngày tải lên: 20/06/2014, 00:20

... to gain a deeper insight into possible issues related to service acce ss and provisioning when considering the multi-channel operations envisioned by the IEEE 802. 11p/WAVE (Wireless Access in Vehicular ... Lab (Broadband Wireless Access), Istituto Superiore Mario Boella, Turin, Italy Competing interests The authors declare that they have no competing interests. Received: 20 July 2 011...

Ngày tải lên: 20/06/2014, 22:20

... J. P. Carini, and D. P. Murdock, Binding and Scattering in Two-Dimensional Systems, Lecture Notes in Physics, vol. m60, Springer, Berlin, 1999. [22] B. Opic and A. Kufner, Hardy-Type Inequalities, ... the mapping ᏸ is injective, then the image ᏸ( R ×(−a,a)) has indeed the ge- ometrical meaning of a non-self-intersecting strip and Ω represents its parameterization in geodesic coordinates...

Ngày tải lên: 22/06/2014, 21:20

... Societies (INFO- COM ’06), Barcelona, Spain, April 2006. [13] S. Shin, A. G. Forte, A. S. Rawat, and H. Schulzrinne, “Reduc- ing MAC layer handoff latency in IEEE 802. 11 wireless LANs,” in Proceedings ... mechanisms that are introduced by 802. 11k and incorporate the appropriate information in them. The light modifications that we have introduced in the basic functionality of the...

Ngày tải lên: 21/06/2014, 23:20