Simple positioning method for location tracking in mobile satellite communication systems

Narenthiran, K.; Tafazolli, Rahim; Evans, B.G.

doi:10.2514/6.2000-1134

Cited by 4 publications

(1 citation statement)

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“…Four simultaneous delay measurements from four satellites are required to solve for the three position coordinates and the user's clock offset as shown in Figure 2. Proposals for positioning, using one or two satellites, were presented in [9] based on newly proposed mobile satellite systems.…”

Section: Location Trackingmentioning

confidence: 99%

A Secure Group Key Management Scheme for Wireless Cellular Networks

Delp

2006

Third International Conference on Information Technology: New Generations (ITNG'06)

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In wireless networks, secure multicast protocols are difficult to implement efficiently due to the dynamic nature of the multicast group and scarcity of bandwidth at the receiving and transmitting ends. Mobility is one of the most distinct features to be considered in a wireless network. Moving users onto the key tree causes extra key management resources even though they are still in service. To take care of frequent handoff between wireless access networks, it is necessary to reduce the number of rekeying messages and the size of the messages. In this paper, we design a key management tree such that neighbors on the key tree are also physical neighbors on the cellular network. By tracking the user location, we localize the delivery of rekeying messages to the users who need them. This lessens the amount of traffic in wireless and wired intervals of the network. The group key management scheme uses a pre-positioned secret sharing scheme.

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Section: Location Trackingmentioning

confidence: 99%