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By Jiang M.

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Additional info for A 2-approximation for the preceding-and-crossing structured 2-interval pattern problem

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7 with RSSI and LQ. In Fig. 7, the RSSI value is reported on chip set and is linear with signal level in dB. We can simply get signal level in dBm on a radio by The LQ is available on handoff algorithm in many ways. This measure is the SNR in the carrier tracking loop and can be used to determine when the demodulator is working near to the noise floor and likely to make errors. Since the handoff delay in the device driver includes message processing time in addition to receiving and transmitting time, the handoff delay in the device driver is longer than the handoff delay in the firmware.

However, this paper is focused on real time applications, such as voice, where a seamless handover can offer a definitive advantage. In this case, the use of TCP is not suitable. In this kind of applications, the most important thing is for packets to arrive on time, within the delay limits established by a specific application, even with the possible loss of some packets. For this reason, the use of TCP and its retransmission mechanism is counterproductive, and the utilization of UDP is recommended.

References 1. The Assar Project: Looking at real time properties using Hierarchical Mobile IPv6 and Fast Handover. Communication System Design, KTH, Stockholm, Sweden. se/˜csd2002-mip/ 2. : Enabling IP QOS in Mobile Environments. IST Mobile Communications Summit 2001, Barcelona, Spain, September 9-12, 2001, pp. 300-305. 3. 11 WLAN based access network. Proceedings of the 4th ACM international workshop on Wireless mobile multimedia. Rome, Italy 2001 Pages: 23 - 32 4. : Introducing IPv6 and Mobile IPv6 into an IPv4 wireless Campus network.

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A 2-approximation for the preceding-and-crossing structured 2-interval pattern problem by Jiang M.


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