Sökning: "Retransmission Mechanism"
Visar resultat 1 - 5 av 6 uppsatser innehållade orden Retransmission Mechanism.
1. Evaluation of a Set of TCP Features over Narrowband Radio Bearer for Train Communication
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : An engineering approach to the evaluation of the TCP as a narrowband bearer for short messages in the low latency train-trackside communication scenario is described in this report. The project was developed in cooperation with Bombardier Transportation Sweden AB as a part of the “ETCS over GPRS” venture. LÄS MER
2. A Diagnostic Tool for the Causes of Packet Corruption in Wireless Sensor Networks
Master-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystemSammanfattning : The two main causes of packet corruption in wireless sensor network are multipath fading and WiFi interference. Identifying the cause of the corruption can be used to improve the reliability of the transmission. If the corruption is caused by WiFi interference, the network could change the channel to a free one. LÄS MER
3. An IEEE 802.15.4 Packet Error Classification Algorithm : Discriminating Between Multipath Fading and Attenuation and WLAN
Master-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystemSammanfattning : In wireless sensor networks, communications are usually destroyed by signal attenuation, multipath fading and different kinds of interferences like WLAN and microwave oven interference. In order to build a stable wireless communication system, reactions like retransmission mechanisms are necessary. LÄS MER
4. Cyclic Redundancy Check for Zigbee-Based Meeting Attendance Registration System
Kandidat-uppsats, Avdelningen för elektronik, matematik och naturvetenskapSammanfattning : The research accomplished in this dissertation is focused on the design of effective solutions to the problem that error codes occur in the ZigBee-based meeting attendance registration system. In this work, several different check algorithms are compared, and the powerful error-detecting Cyclic Redundancy Check (CRC) algorithm is studied. LÄS MER
5. Fast retransmit inhibitions for TCP
Magister-uppsats, Institutionen för informationsteknologiSammanfattning : The Transmission Control Protocol (TCP) has been the dominant transport protocol in the Internet for many years. One of the reasons to this is that TCP employs congestion control mechanisms which prevent the Internet from being overloaded. LÄS MER