Power Efficient Transmission of Time Multiplexed Unicast and Broadcast Cellular Communications
Keywords:MBSFN, unicast, time multiplexing, wasted energy, power adjustment, propagation losses, outage probability
AbstractIn this paper, a new power adjustment technique for the time multiplexing of LTEunicast and broadcast is proposed to reduce the wasted downlink powerin unicast slots. In addition to compensating the propagation losses (distance-loss, shadowing and fast fading), the proposed technique adapts the signal-tointerference-plus-noise ratio (SINR) to be fit in the required range. The power adjustmentalgorithm uses a predefined SINR threshold (SINR_th) specific for each service and data rate. When the measured SINR of the user equipment SINR_UE is above (lower) than the SINR_th, the decrease (increase) of power is ordered adaptively depending on the difference between the two values. The proposed techniqueis evaluated by simulation where numerical results quantitatively outline the benefits on system performance, achieved in terms of average downlink transmitted power, average saved energy and outage probability of SINR_UEversus userspeed.
How to Cite
TRANSFER OF COPYRIGHT AGREEMENT
The manuscript is herewith submitted for publication in the Journal of Telecommunication, Electronic and Computer Engineering (JTEC). It has not been published before, and it is not under consideration for publication in any other journals. It contains no material that is scandalous, obscene, libelous or otherwise contrary to law. When the manuscript is accepted for publication, I, as the author, hereby agree to transfer to JTEC, all rights including those pertaining to electronic forms and transmissions, under existing copyright laws, except for the following, which the author(s) specifically retain(s):
- All proprietary right other than copyright, such as patent rights
- The right to make further copies of all or part of the published article for my use in classroom teaching
- The right to reuse all or part of this manuscript in a compilation of my own works or in a textbook of which I am the author; and
- The right to make copies of the published work for internal distribution within the institution that employs me
I agree that copies made under these circumstances will continue to carry the copyright notice that appears in the original published work. I agree to inform my co-authors, if any, of the above terms. I certify that I have obtained written permission for the use of text, tables, and/or illustrations from any copyrighted source(s), and I agree to supply such written permission(s) to JTEC upon request.