IEEE 802.16e/m energy‐efficient sleep‐mode operation with delay limitation in multibroadcast services

Abstract

Mobile Worldwide Interoperability for Microwave Access networks usually provide flexible sleep-mode operations that allow mobile stations to conserve energy during sleep or active mode. For example, the IEEE 802.16e/m standard presents three power-saving classes that can be associated with different types of network connections to decrease the power consumption of mobile stations. However, previous studies failed to fully use the sleep-mode features to save energy of a mobile station while simultaneously maintaining unicast and multicast/broadcast connections. This study proposes an energy-efficient packet scheduling algorithm for both multicast and broadcast services that does not violate the QoS requirements of real-time connections. The proposed activity aggregation selection mechanism approach can minimize total power consumption of mobile stations in one cell and simultaneously satisfy the QoS of real-time connections. This method improves energy efficiency for IEEE 802.16e/m and the activity aggregation selection mechanism approach can optimize sleeping mode features to save the energy of mobile stations with overlapping connection packets The simulations in this study verified the proposed approach.(1) Default listening window: length of the default listening window.(2) Initial sleep cycle: length of the initial sleep cycle.

Timer‐based power management for infrastructure IEEE 802.11 WLAN with unreliable wireless links

“…Retransmission rates together with consecutive retransmission occurrences were measured in Dominguez-Jaimes et al [10] for communication links of the IEEE 802.11g standard in an industrial indoor environment. An energy-efficient algorithm for packet scheduling was proposed by Cheng [11], which can be used in multicast and broadcast services without violating the QoS requirements for real-time connections. Akkaya [12] presented an energy-aware approach for delivering delay-constrained data.…”

Energy efficiency and traffic offloading in wireless mesh networks with delay bounds

“…Another topical field is energy efficiency (EE), also known as ‘green’ networking. While the majority of the researchers have explored various aspects of cellular networks , it is also possible to find some approaches for reducing the power consumption of carrier‐grade WLANs , as well as for improving the energy performance of the WLAN protocols and procedures . Similarly, some studies have been presented on power saving solutions in WMNs , even though the majority of such studies focus on battery‐powered nodes rather than on plugged equipment (see e.g.…”

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“…Depiction of the flow conservation constraints(5). The same figure applies to (6) by removing user u, the .g; u/ link and the x gu variable.…”

Wireless Technologies for IoT in Smart Cities

“…Coverage range is 3 km, 5-30 km and 30-100 km. This standard is adding support for many new service classes, it increases mobility, and guarantees better Quality of Service (QoS)[57,58].Moreover, there are other standards of IEEE 802.16; 802.16f, 802.16g, 802.16h, 802.16j and 802.16k. They are deployed for different purposes.…”