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引用次数: 30
摘要
BLE (Bluetooth Low Energy)协议的数据速率为1Mbps, BLE 4.2协议为2Mbps, BLE 5协议为2Mbps。然而，BLE系统的吞吐量会低得多，因为我们需要考虑各种协议开销、自适应RF连接调整以在干扰中保持稳健的链路，以及基于BLE数据交换策略和操作(如连接间隔、数据包大小和数据包确认方案)的协议限制。在本文中，我们实际研究了在数据记录应用中使用的简单双节点BLE 4.2网络所能实现的最大吞吐量。在这种类型的应用程序中，一个节点总是有数据要传输，而收集传输的传感器数据的另一个节点没有任何数据要发送。我们还将在本研究中考虑BLE参数的影响。研究结果表明，在无线链路无差错且应用程序始终有数据传输的情况下，该应用程序的最大吞吐量为221.7 kbps。
A practical study on Bluetooth Low Energy (BLE) throughput
the data rate of Bluetooth Low Energy (BLE) is 1Mbps, and 2Mbps for BLE 4.2 and BLE 5, respectively. However, the throughput of a BLE system would be much lower since we need to account for various protocol overheads, adaptive RF connection adjustments for maintaining robust links amid interference, and protocol limitations based on BLE data exchange strategy and operations such as connection intervals, packet size and packet acknowledgment scheme. In this paper, we practically investigate the maximum throughput achievable in a simple BLE 4.2 network of two nodes, used in a data logging application. In this type of application, one node always has data to transmit and the other node which collects the transmitted sensor data does not have any data to send. We will also consider the effect of BLE parameters in this study. The result of our study shows that the maximum amount of throughput is 221.7 kbps for this application under the condition that the wireless link is error free and application always has data to transmit.
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