Computer Networking - Chương 6 Các mạng không dây  và di động pptx

... Network Controller (RNC) kết nối điểm điểm với các BS – RNC kết nối với nhau – Single-point-of- failure 45 Mục tiêu của môn học • Môn học chuyên ngành • Tìm hiểu nhiều mặt của công nghệ ... hơn – Max 473 kbps • Cdma2000 – Tương thích với IS-95 – Max 2 Mbps • WCDMA – Dựa trên CDMA – Kênh rộng 5 MHz – Max 2 Mbps • Mạng di động thế hệ bốn (4G) – IP-based – Tích hợp trong suốt với m...

Ngày tải lên: 13/09/2012, 11:16

... Edited by Ivan Stojmenovic´ Copyright © 2002 John Wiley & Sons, Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) 1.5.2.2 Priority Scheme In this scheme, priority is given to handoff ... ␮ c + ␮ h-dwell ␭ H S␮+M H (␮ c + ␮ h-dwell ) S+M H ,0S, 0S C ,00, 0 ··· ␭ H (S C +1)␮ ␭ H S␮ ··· ␭ H S␮+ ␮ c + ␮ h-dwell ␭ H S␮+M H (␮ c + ␮ h-dwell ) S+M H ,M O S, M O S...

Ngày tải lên: 15/12/2013, 05:15

... Edited by Ivan Stojmenovic´ Copyright © 2002 John Wiley & Sons, Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) strategies include random selection and the most recently visited ... timer-based strat- egy performs substantially better than a fixed location area-based strategy. The location update scheme proposed in [44] is modified from the time-based ap...

Ngày tải lên: 15/12/2013, 05:15

... approach is the combination of characteristics of the MO-FAP, MS-FAP, MB-FAP, and MI-FAP models. For example, Duque-Antón et al. [15] and Al-Khaled [2] provided a simulated annealing model to solve a ... simulated annealing approach to a real point-to-point wireless net- work. Genetic algorithms are applied by Kim et al. [30] to obtain interference-free assign- ments. They tested several cros...

Ngày tải lên: 15/12/2013, 05:15

... subject. The re- 71 Handbook of Wireless Networks and Mobile Computing, Edited by Ivan Stojmenovic´ Copyright © 2002 John Wiley & Sons, Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) The ... MULTICOLORING TABLE 4.2 Best known k-local algorithms Recoloring Lower bound on distance competitive ratio Best known 0-local 9/7 3 1-local 9/8 3/2 2-local 13/12 17/...

Ngày tải lên: 15/12/2013, 05:15

... dynamic situa- 95 Handbook of Wireless Networks and Mobile Computing, Edited by Ivan Stojmenovic´ Copyright © 2002 John Wiley & Sons, Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) and ⑀ = ... September 1997. 37. J. van den Heuvel, Radio channel assignment on 2-dimensional lattices. Technical Report LSE- CDAM-9 8-0 5, Centre for Discrete and Applicabl...

Ngày tải lên: 15/12/2013, 05:15

... Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) 6.5.1 Cellular Telephony The advanced mobile phone system (AMPS) is an FDMA-based cellular system [6]. The system features 832 full-duplex ... is still room for improve- ment (more likely on the lower-bound side). TSMA-like protocols have also been de- ployed as a basis for implementing broadcast (i.e., one-to-a...

Ngày tải lên: 24/12/2013, 13:16

... Edited by Ivan Stojmenovic´ Copyright © 2002 John Wiley & Sons, Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) ease of network installation with respect to wired LAN infrastructures. ... multiple access schemes based on the DS-CDMA principle for the air interface: the wideband CDMA (W-CDMA) and the time-division CDMA (TD-CDMA). The W-CDMA adopts a DS-CDM...

Ngày tải lên: 24/12/2013, 13:16

... Edited by Ivan Stojmenovic´ Copyright © 2002 John Wiley & Sons, Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) easily obtained by the base station by adding a one bit field in ... scheduler to support both er- ror-sensitive flows and delay-sensitive flows according to the wireless fair service model. Error-sensitive flows will not delete the head-of-line...

Ngày tải lên: 24/12/2013, 13:16

... Sons, Inc. ISBNs: 0-4 7 1-4 190 2-8 (Paper); 0-4 7 1-2 245 6-1 (Electronic) left or right subtree rooted at that node. For an illustration of a partition tree corresponding to a five-station RN we refer ... completeness we now present a leader election protocol for single-hop, single-channel radio networks with no-CD. Protocol Election-with-no-CD for i ǟ 0 to ϱ do for j ǟ 0 to i d...

Ngày tải lên: 24/12/2013, 13:16