NETSHe Lab Ltd. has implemented time division multiply access for ordinary 802.11a/b/g/n hardware.
Presentation at http://www.netshe.ru/files/doc/en/netshe_tdma_pres_en.pdf provides brief overview for the implementation.
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NETSHe Lab Ltd. presents time division multiply access (TDMA) implementation for ordinary 802.11 a/b/g/n equipment
Goal TDMA advantages in comparison with the CSMA/CA
TDMA does not provide throughput degradation during the traffic and (or) amount of nodes increasing in the network
Predicable latency
TDMA is introduced for:
Carrier's backhaul
Access network
Specialized network with latency / throughput sensetivity applications
TDMA is introduced for:
Carrier's backhaul
Access network
Specialized network with latency / throughput sensetivity applications
Implemented network topologies for TDMA:
MESH-network
Point to Point (P2P)
Point to Multi Point (P2MP)
Some valuable TDMA features:
Configurable time-slot sizes in 40, 20, 10, 7 milliseconds
802.11n features are supported (except A-MPDU)
Built-in A-MSDU (frame aggregation) implementation for all modes
Adaptive bitrate and retransmission support.
Built-in frame compression
Traffic encryption support
5/10/20/40 MHz channel widths for all modes
Channel shifting with 1MHz step
Batman_adv support
Implementation details
Implemented as an standard Linux wireless stack extension. Modified stack is fully backward compatible with unmodified stack. All wireless chips which are supported by ath5k, ath9k drivers, are supported too. TDMA support for any wireless chip which has drivers for mac80211 stack is possible.
Fresh compat-wireless is used to provide compatibility with variety kernels.
Licensing:
NETSHe Lab Ltd. offers flexible licenses for TDMA:
Soure codes of modified compat-wireless
Wireless drivers and stack in a binary form for the specified Linux kernel version.
Custom firmwares (with NETSHe)
Want to know more?
Contact us by email info@stasoft.net
or call +7 (4852) 90-89-30