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The defense date of the thesis is 2012-02-08
The current date is 2019-05-23
URN etd-0207112-224627 Statistics This thesis had been viewed 1317 times. Download 0 times. Author Chien-Kuo Huang Author's Email Address No Public. Department Communication Engineering Year 2011 Semester 1 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 58 Title Study and Measurement of 3G HSPA Network Keyword Hybrid Automatic Request Adaptive Modulation and Coding Adaptive Modulation and Coding Hybrid Automatic Request Abstract This thesis studies the HSPA performance of the user equipment (UE) by the measurements in the field and explains how telecom operators could provide a better HSPA networks. Here are the findings:
1. In the earlier 3G WCDMA system, the maximum bit rate for both downlink and uplink is only 384 Kbps, which is far behind the 3G HSPA system could provide. From the measurements in the field, a 3GPP Release 6 UE is able to achieve 12.1Mpbs for downlink and 1.7Mpbs for uplink.
2. A stationary UE obtains higher HSPA throughput than a mobile UE dose. The error rate of a mobile UE is subject to increase and the throughput is affected by the variables of the air interface. Therefore, a stationary UE could utilize the HSPA resources more efficiently.
3. The overall performance of the network decreases when the number of subscribers increases. Telecommunications operators keep expanding their network capacities by, for example, adding more WCDMA Base Stations. However, equally important is the network optimization, such as adjusting the angle and tilting of the antennas, fine-tuning the parameters of power control, reviewing the neighboring cells for switchover. The satisfaction of subscribers is among the most concerns of the operator as it impacts the loyalty of subscribers.
Advisor Committee Chienhua Chen - advisor
Jie-Cherng Liu - co-chair
none - co-chair
Files Date of Defense 2012-01-09 Date of Submission 2012-02-08