Mobility Management and Call Processing of Personal Communication Service on MAN

• Main Authors: Liu, Chen-Ming, 劉振銘
• Other Authors: Chen Yaw-Chung
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/70271237335460016179

碩士 === 國立交通大學 === 資訊工程學系 === 85 === Personal Communication Service (PCS) is a technology that allows people tomake calls anywhere to people at any place.If we consider the traffic load forthe PCS system design, the centralized architectures are probably unsuitablefor the metropolitan area because of the high traffic density. Distributedachitecture is thus considered, and the DQDB network maybe a proper candidateto PCS.Previous work has addressed an enhanced bi-state PA transport mechanismand associated call control, as well as handoff management technique over MAN. This thesis addresses a method to localize the search of the called mobile-location information(one-level search), no matter inside the local MAN or not.The routing information of a call can be obtained from local register database. We propose a multicast mechanism on DQDB to update user location information, the method supports the localized query register database method. Besides,wepresent mobility management and call processing methods to build an efficient and reliable metropolitan wireless network. From the performance evaluation, wefind that the localized query method maybe worthy to implement in DQDB networkenvironment, although it needs some additional overhead. The DQDB cell formatis compatible with ATM.It is easy to connect the DQDB network to ATM, and thepersonal communication service can be extended to broadband services then we can access world-wide resources.