A Downlink and Uplink Alignment Scheme for Power Saving in IEEE 802.16 Protocol

A Downlink and Uplink Alignment Scheme for Power Saving in IEEE 802.16 Protocol

This study shows the problem of power saving mechanism (PSM) that sleep intervals of uplink (UL) connections do not synchronize with sleep intervals of downlink (DL) connections. That is, the energy of a mobile station (MS) is not really saved if the DL connections are in the sleep mode while the UL connections are in normal mode, and vice versa. To avoid the asynchronism of power saving (PS) b...

Performance Analysis of Power Saving Class of Type 1 with Both Downlink and Uplink Traffics in IEEE 802.16e

We investigate power consumption of a mobile station with the power saving class of type 1 in the IEEE 802.16e. We deal with stochastic behavior of mobile station during not only sleep mode period but also awake mode period with both downlink and uplink traffics. Our methods for investigating the power saving class of type 1 are to construct the embedded Markov chain and the semi-Markov chain g...

Backhaul-Aware Decoupled Uplink and Downlink User Association, Subcarrier Allocation, and Power Control in FiWi HetNets

Decoupling the uplink and downlink user association improves the throughput of heterogeneous networks (HetNets) and balances the traffic load of macro- and small- base stations. Recently, fiber-wireless HetNets (FiWi-HetNets) have been considered as viable solutions for access networks. To improve the accuracy of user association and resource allocation algorithms in FiWi-HetNets, the capacity ...

A Power-Saving Algorithm and a Power-Aware Routing Scheme for IEEE 802.11 Ad Hoc Networks

Performance Evaluation of Handover Scheme Considering Uplink and Downlink Signals in IEEE 802.16e Systems

1 good. The conventional handover scheme is performed considering only downlink information. However uplink and downlink signal qualities can be asymmetric in Time Division Duplexing (TDD)/Orthogonal Frequency Division Multiple Access (OFDMA) systems like IEEE 802.16e systems. Therefore conventional handover schemes based on the downlink signal could degrade the uplink quality of service (QoS)....