User's Manual

RT System 2 v2.3 26 Deployment Guide R01.i
© 2010-2014 Wireless Seismic, Inc. All rights reserved.
3
3. Backhaul
3.1 Overview
In network communications, the backhaul is the part of the network that contains the
links and equipment between the core network and the sub networks. The following
table defines concepts associated with backhaul communications:
Table 3–1 Backhaul Communication Concepts
Term Definition Reference
Point-to-Point A method where each radio node in the
network captures and disseminates its own
data as well as serves as a relay for other
radio nodes in the network sending data
along a path, hopping from one node to the
next.
This is how the RT System 2 WRUs send
information to the LIU and how LIUs
communicate with each other in a point-to-
point configuration.
Also called Bucket Brigade or String-of-
Pearls.
• “Point-to-Point Single
Backhaul Data Direction” on
page 28
• “Point-to-Point Dual Backhaul
Data Direction” on page 29
• “4. Point-to-Point Backhaul”
on page 65
Point-to-Multipoint A method where each line station LIU
communicates directly with the recorder LIU.
The backhaul is composed of a number of
line station mast/radio/LIUs pointing to a
recording truck mast/radio/LIU. The following
list describes the most common
configurations:
• Point-to-Multipoint – A single
recording truck radio and multiple line
station radios
• Point-to-Multipoint (redundant) – A
single active recording truck radio, a
backup (redundant) recording truck
radio, and multiple line station radios
• Point-to-Multipoint (custom) – A
combination of recording truck radios
and line station radios
Also called Star Configuration.
• “Point-to-Multipoint Backhaul
Data Direction” on page 30
• “5. Point-to-Multipoint
Backhaul” on page 98