Uplink Power Control Schemes in Long Term Evolution
Mrs. Sonia1, Nisha Malik2, Preet Kanwar Singh Rekhi3, Sukhvinder Singh Malik4
1Mrs. Sonia, Department of Electronics and Communication Engineering, Bhagwan Parshuram College of Engineering, Gohana Sonepat, Haryana, India.
2Nisha Malik, Department of Electronics and Communication Engineering, Bhagwan Parshuram College of Engineering, Gohana Sonepat, Haryana, India.
3Preet Kanwar Singh Rekhi, LTE Test Engineer, Bangalore, Karnataka, India.
4Sukhvinder Singh Malik, LTE Test Engineer, Bangalore, Karnataka, India.
Manuscript received on January 25, 2014. | Revised Manuscript received on February 13, 2014. | Manuscript published on February 28, 2014. | PP: 260-264 | Volume-3, Issue-3, February 2014. | Retrieval Number: C2697023314/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In multi user environment, number of users share the same radio resources. The shared channels cause the signal intended for a certain user to reach other users and introduce interference in their path and degrade the signal quality. Power control needs to reduce inter-cell interference level and at the same time achieve a required SINR level. To achieve this SINR level eNodeB sends Transmit Power Control (TPC) Command in Downlink in PDCCH and UE sends Power Head Room (PHR) stating how more it can transmit to reach maximum power. In this paper, authors have worked upon the PUSCH Power control, LTE power control mechanism, TPC Command and Power Headroom Reporting. They also found the optimum value of Path Loss Compensation Factor “α”.
Keywords: LTE, Uplink, Open Loop Power Control, Close loop Power Control, Fractional Power Control, and Inter-Cell Interference.