TY - GEN
T1 - Uplink scheduling for continuous connectivity in high speed packet access systems
AU - Abd El-Atty, Saied M.
AU - Lizos, Konstantinos
PY - 2011
Y1 - 2011
N2 - The performance efficiency of high speed packet access (HSPA) systems is mainly based on channel quality information (CQI) reports transmitted by user equipment (UE) to Node B. CQI contains the required scheduling information (SI) that is used in the Node B scheduler. However, the frequent CQI reports increase uplink interference, reducing the signal reception quality at the uplink, causing degradation of the system spectral efficiency. In this paper, we propose an improved CQI prediction scheme based on a finite state Markov chain (FSMC) model for wireless channel, in order to reduce CQI signaling overhead in the HSPA system. Then, we introduce an enhanced uplink packet scheduling (EUPS) scheme to provide quality of services (QoS) guaranteed for continuous packet connectivity in the enhanced uplink (EUL). EUPS serves the active UEs not only according to buffer status but also according to reported state of the wireless channel of each UE. The performance of the proposed scheme in terms of average packet delay, average packet drop and average cell throughput is compared to the classical scheduler of 3GPP standards. The simulation results show the effectiveness of the proposed scheme.
AB - The performance efficiency of high speed packet access (HSPA) systems is mainly based on channel quality information (CQI) reports transmitted by user equipment (UE) to Node B. CQI contains the required scheduling information (SI) that is used in the Node B scheduler. However, the frequent CQI reports increase uplink interference, reducing the signal reception quality at the uplink, causing degradation of the system spectral efficiency. In this paper, we propose an improved CQI prediction scheme based on a finite state Markov chain (FSMC) model for wireless channel, in order to reduce CQI signaling overhead in the HSPA system. Then, we introduce an enhanced uplink packet scheduling (EUPS) scheme to provide quality of services (QoS) guaranteed for continuous packet connectivity in the enhanced uplink (EUL). EUPS serves the active UEs not only according to buffer status but also according to reported state of the wireless channel of each UE. The performance of the proposed scheme in terms of average packet delay, average packet drop and average cell throughput is compared to the classical scheduler of 3GPP standards. The simulation results show the effectiveness of the proposed scheme.
KW - CQI
KW - EUL
KW - FSMC
KW - HSPA
KW - Scheduling
UR - https://www.scopus.com/pages/publications/84857478480
U2 - 10.1109/HONET.2011.6149839
DO - 10.1109/HONET.2011.6149839
M3 - Conference contribution
AN - SCOPUS:84857478480
SN - 9781457711695
T3 - 8th International Conference on High-Capacity Optical Networks and Emerging Technologies, HONET 2011
SP - 311
EP - 317
BT - 8th International Conference on High-Capacity Optical Networks and Emerging Technologies, HONET 2011
T2 - 8th International Conference on High-Capacity Optical Networks and Emerging Technologies, HONET 2011
Y2 - 19 December 2011 through 21 December 2011
ER -