Title :
Uplink Power Control for Dual Connectivity
Author :
Li Zhao ; Xueyan Huang ; Yong Li ; Liu Liu ; Huiling Jiang ; Takeda, Kenji ; Xiaodong Ji
Author_Institution :
Key Lab. of Universal Wireless Commun., Wireless Signal Process. & Network Lab., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Small cell enhancement is a key technology to meet future network capacity demands. Dual connectivity has been introduced in LTE Release 12 to enhance the LTE operation in heterogeneous deployments and improve the overall system performance. However, in the scenarios of dual connectivity, due to distributed scheduling in two eNodeBs (eNBs) connected with non-ideal backhaul, the total required transmit power of a user equipment(UE) will easily exceed its maximum capability and power scaling is needed. In this paper, several semi-static power splitting schemes will be proposed based on power spectral density (PSD), path loss and average power consumption ratio to solve this problem. Simulation results demonstrate that our schemes can greatly decrease the probability of power scaling and reduce block error rate (BLER), thus achieving significant gains in uplink throughput.
Keywords :
Long Term Evolution; power control; telecommunication control; BLER; LTE operation; PSD; block error rate; dual connectivity; eNodeB; heterogeneous deployments; maximum capability; nonideal backhaul; path loss; power scaling probability; power spectral density; semistatic power splitting scheme; uplink power control; user equipment; Phase shift keying; Power control; Power demand; Propagation losses; Radio access networks; Throughput; Uplink;
Conference_Titel :
Computational Science and Engineering (CSE), 2014 IEEE 17th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-7980-6
DOI :
10.1109/CSE.2014.266
