Title :
Evaluation of a bandwidth assignment method in mobile ATM networks that achieve lossless handover
Author :
Nishio, Masaya ; Shinagawa, Noriteru ; Kobayashi, Takehiko
Author_Institution :
YRP Center, YRP Mobile Telecommun. Key Technol. Res. Labs. Co. Ltd., Yokosuka, Japan
Abstract :
Burst transmission is necessary for a lossless handover scheme under which the downlink asynchronous transfer mode (ATM) cells are stored in the buffer memory of the switch during handover and then flushed into the mobile terminals after the handover. We propose a bandwidth assignment method for this handover scheme. The ATM switches divide the total bandwidth of the downlink into a normal and an extra bandwidth, and the necessary bandwidth is obtained from both of these for burst transmission while only the normal bandwidth is used for normal transmission. We use computer simulations to evaluate the probabilities of new call blocking rate, handover failure rate, and forced termination rate due to the unavailability of downlink resources in this bandwidth assignment method
Keywords :
asynchronous transfer mode; bandwidth allocation; buffer storage; cellular radio; packet radio networks; probability; radio links; ATM cells; ATM switches; asynchronous transfer mode; bandwidth assignment method; buffer memory; burst transmission; cellular radio; computer simulations; downlink resources; extra bandwidth; forced termination rate probability; handover failure rate probability; lossless handover; mobile ATM networks; mobile terminals; necessary bandwidth; new call blocking rate probability; normal bandwidth; Asynchronous transfer mode; Bandwidth; Buffer storage; Communication switching; Degradation; Downlink; Intelligent networks; Laboratories; Propagation losses; Switches;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.797852
