Need to implement Wireless mesh network on the 900MHz band

Job Description:

Hi,

we need to develop a product which uses 900MHZ transceiver radios. There will be between 3 and 200 radio devices installed in different buildings topologies and one PC receiving and sending information to each device. To make sure all the radio devices can communicate with the PC, we need to implement a wiresless mesh network. We need the mesh network to be self building and self healing. The PC will be equipped with a USB module embedding a radio transceiver. We will take care of the application specifics, what we need is someone that can implement the mesh network code and then we will take over this work do to the application specifics. We need to work with Atmel microcontrollers and we need to use Silabs 900MHz radios, SI4455. We will provide the all the hardware needed for the developper to work, Atmel uc connected to the radio transceiver by SPI + the USb-radio module connected to the PC.

We are looking for someone who can develop this for us using AN EXISTING wireless mesh network stack like LWMesh from Atmel or any other light (8K to 16K) and RELIABLE mesh network stack. The code must be in C and work for devices with only one radio (transceiver). PLEASE DO NOT ANSWER AND TELL ME YOU CAN DEVELOP IT FROM SCRATCH. We want an already working mesh network to be adapted to our needs and not develop our own network from scratch. We need to start from a working and reliable mesh network stack and we want the freelancer to already have experience with it. No one will be hired if you do not have experience with the selected stack because we need a smooth process and finish with a reliable code (this is a serious project development). You need to prove your experience to get the work.

What we need:

Self building and sel healing mesh network (any topologies, many diferent topologies will be faced and we can't predict it)

Being able to send a message from any device to any device

Being able to send brodcast message

Being able to send a mesage from the PC to any device

Being able to send a message from any device to the PC

Being able to add repeaters for farther device to be connected to the network

We must make sure the message are sent and acknowledged

The devices are battery powered so we need to sync the communication to let the devices to sleep most of the time.

The data volume exchange is small, we do not do things like audio streaming. Only short message (~64 bytes) will travel the netowrk and few messages are sent.

If you have any question please feel free to ask.

Thank you

Навыки: Программирование на С, Электроника, Встроенное ПО, Микроконтроллер, Беспроводные технологии

ID проекта: #6066610