Battery-efficient architecture for an 802.11 MAC processor
Battery-efficient architecture for an 802.11 MAC processor
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802.11 MAC 处理器的电池高效架构
DOI：
10.1109/icc.2002.996941
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
S. Dey
中科院分区：
文献类型：
--
作者：
K. Lahiri;A. Raghunathan;S. Dey
无线设备、通信协议和应用的复杂性的快速增长与电池技术的缓慢改进相结合，已经产生了“电池差距”，该“电池差距”仅预计随着无线通信技术和应用的进步而增加。弥合这一差距的传统方法利用低功耗网络协议和手机架构。然而，现在众所周知，最小化从电池汲取的总能量或平均功率并不一定导致最大化电池寿命，这需要新的电池驱动的协议和硬件设计方法。我们提出了一个电池效率的802.11 MAC处理器，它采用了一种新的电池驱动的电源管理方法的架构。MAC处理器采用了一种新型的片上总线架构，能够调节系统所汲取的电流分布，从而实现电池高效放电。所提出的电池友好型MAC处理器架构能够显著增加电池容量和寿命，同时最大限度地降低性能影响。此外，所开发的架构提供了允许在电池寿命和性能之间进行权衡的机制，并且可以被配置为基于网络流量特性来适配功率管理技术。
Rapid growth in the complexity of wireless devices, communication protocols, and applications, combined with slow improvements in battery technologies, have created a "battery gap" that is only projected to increase with advances in wireless communication technologies and applications. Conventional approaches to bridging this gap exploit low-power network protocols and handset architectures. However, it is now well known that minimizing the total energy or average power drawn from a battery does not necessarily lead to maximizing battery life, calling for new battery-driven approaches to protocol and hardware design. We present a battery-efficient architecture for an 802.11 MAC processor, which incorporates a new battery-driven approach to power management. The MAC processor employs a novel on-chip bus architecture that is capable of regulating the profile of the current drawn by the system, enabling battery discharge at high efficiencies. The proposed battery friendly MAC processor architecture enables significant increases in battery capacity and lifetime, while minimizing performance impacts. Further, the developed architecture provides mechanisms that allow for trade-offs between battery life and performance, and can be configured to adapt the power management techniques based on the network traffic characteristics.