M3SR Series 4100
FastLink Mode (FLM)
5.42
Operating Manual 6175.4760.02 – 01
5.3.2
FastLink Mode (FLM)
The main purpose of the FastLink Mode (FLM) feature is to allow an application to establish
exclusive point-to-point connections and thus to avoid concurrent connections on the radio
network. IPoA itself provides appropriate mechanisms on the link layer to reduce the collision
probability for concurrent connections, the efficiency will suffer with increasing amount of
parallel connections.
Especially multiple long-lasting TCP (Transmission Control Protocol) connections will benefit
from FLM, since the TCP protocol does not scale well with increasing amount of concurrent
connections over a slow radio link (see sect. 5.3 IP over Air (IPoA)).
If the typical use case consists of many (e.g. more than 5) concurrent and long-lasting con-
nections, FLM will greatly improve performance and reliability of such data transfers. Al-
though the FLM feature uses some lower layer (link layer) services, there is no influence of
these layers by FLM. FLM can be seen as a stand-alone state machine on application level
that sits on top of the transport and link layer. It is the responsibility of the application to use
FLM appropriately, e.g. to send only FLM assigned data when an FLM connection is estab-
lished if exclusive channel access (only one connection at a time) shall be guaranteed net-
work-wide.
Summary of Contents for M3SR 4100 Series
Page 15: ...M3SR Series 4100 Documentation Overview xiv Operating Manual 6175 4760 02 01...
Page 48: ...M3SR Series 4100 Index 34 Operating Manual 6175 4760 02 01 ZF4401 mod 02 2 10...
Page 70: ...M3SR Series 4100 Radio Control 1 22 Operating Manual 6175 4760 02 01...
Page 116: ...M3SR Series 4100 Example Configuration 2 46 Operating Manual 6175 4760 02 01...
Page 336: ...M3SR Series 4100 Priority Channel 3 220 Operating Manual 6175 4760 02 01...
Page 696: ...M3SR Series 4100 Remote Control 8 4 Operating Manual 6175 4760 02 01...
Page 697: ...Operating Manual 6175 4760 02 01 9 1 M3SR Series 4100 Drawings 9 Drawings...
Page 706: ...M3SR Series 4100 Drawings 9 10 Operating Manual 6175 4760 02 01...
