Title :
A WDM-based PCN architecture
Author :
Huang, Nen-Fu ; Wang, Rui-Chi
Author_Institution :
Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
A WDM-based PCN architecture is proposed. Based on the broadcast nature of WDM star couplers, this WDM-based architecture gains several advantages over the current prominent ATM-based PCN architecture: (1) a fast hand-off scheme for roaming terminals, (2) an easy multicast routing implementation for mobile environment, and (3) a less number of continuous reconnections. Based on the proposed architecture, a wavelength offset conflict problem might occur when mobile terminals move into neighboring cells. A wavelength assignment scheme is proposed to assign the wavelength and offset on the star coupler for each connection so that the offset conflict rate is kept as small as possible. Simulation results show that the proposed wavelength offset assignment scheme performs much better than the random assignment scheme in terms of offset conflict rate
Keywords :
cellular radio; land mobile radio; network topology; optical couplers; personal communication networks; telecommunication network routing; wavelength division multiplexing; ATM-based PCN architecture; WDM star couplers; WDM-based PCN architecture; broadcasting; fast hand-off; mobile environment; multicast routing; offset conflict rate; random assignment; roaming terminals; simulation results; wavelength offset assignment; wavelength offset conflict problem; wireless cellular network; Base stations; Broadcasting; Computer architecture; Couplers; Personal communication networks; Spine; WDM networks; Wavelength division multiplexing; Wavelength routing; Wireless networks;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.632554
