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Author:Subramanya, Tejas
Title:Performance evaluation of Dynamic Block Error target selection based on traffic types in High Speed Uplink Packet Access
Publication type:Master's thesis
Publication year:2014
Pages:xi + 53      Language:   eng
Department/School:Tietoliikenne- ja tietoverkkotekniikan laitos
Main subject:Radio Communications   (S3019)
Supervisor:Jäntti, Riku
Instructor:Philippe, Rua
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201412303350
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto  2667   | Archive
Keywords:block error target
signal to interference ratio
outer loop power control
radio resource management
uplink interference
HSUPA
Abstract (eng):In today's internet oriented world, the growth in mobile or cellular data traffic is enormous and the trend is going to continue for years to come.
From past few years, the uplink data traffic has been of much importance because of the rise in social networking, video-conferencing, web-browsing etc.
Therefore, uplink cell capacity and user experience are the major factors that the operators need to focus on.

In uplink, users are not orthogonal to each other.
Therefore, it results in interference when multiple users transmit simultaneously.
That means to say, in uplink, shared resource is the amount of interference within the cell.
Power control is a very important aspect in uplink to control the transmission power of UE's and thus the resulting interference.

In High Speed Uplink Packet Access (HSUPA), a feature called 'Dynamic Block error rate target selection' is introduced to control the uplink interference.
This feature distinguishes the users into different traffic types based on their bit rate, frame rate and block error rate.
Depending on the traffic types, different ideal BLER (Block error rate) targets are used to calculate the power with which the UE has to transmit in the next transmission period so as to introduce minimum interference.
This thesis is focused on studying the 'Dynamic BLER' feature and then implementing different outer loop power control algorithms related to the feature.
Simulations are done for various scenarios (low traffic, moderate traffic, high traffic) within the cell and the gain achieved in terms of cell throughput from this feature is verified through results for all the scenarios.
ED:2015-01-18
INSSI record number: 50417
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