Embedded Networking for High Data Rate Multi-Source Applications


Because of the increasing demand for high speed sensor traffic on embedded platforms, there is a need to examine approaches for attaining high throughput without sacrificing the ability to sample sensor data at high speed.

The current protocols for networking on embedded devices focus on power consumption and attempt to leave the network hardware off for most of the time, giving them longer battery life at the expense of network speed.

The aim of the project would be to establish a protocol for high speed networking in star topology networks designed for small-scale sensor networks with a more theoretical look at other topologies.

Focus is on a multiple audio stream input to a PC from several embedded devices using a network protocol based round the IEEE 802.15.4 low-level protocol.


Further Information

100 Byte Payloads

Because the radio TX and RX FIFOs are both 128 bytes long, and some of this is required for the header and trail that the radio adds to any packets, 100 bytes seemed optimal (see graph below for other data rates). The following graph shows the...

128B Payloads

The following details the results of changing the payload size in TinyOS's AMStandard module to 128 bytes, rather than the stock 28 bytes It should be noted that speeds here are theĀ useful data speeds, ie. excluding headers and trailing data for ...

Embedded Networking for High Data Rate Multi-Source Applications

1. Abstract Because of the increasing demand for high speed sensor traffic on embedded platforms, there is a need to examine approaches for attaining high throughput without sacrificing the ability to sample sensor data at high speed. The current...

Initial Speed Tests

To benchmark the existing system, I set two iMote2's up, one as a 'Ping' mote and the other as a 'Pong' mote. The Ping mote was set to transmit as-fast-as-it-could to the point of crashing the device due to a stack overflow. While this is impractical...

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