User's Manual

Table Of Contents
System Description 19
1-5.7 Wireless Mesh Backhaul Networks
2.5G and 3G cellular systems, which integrate voice and data, require higher-capacity backhaul, QoS
(Quality of Service), BoD (Bandwidth on Demand), ability to dynamically load balance bursty traffic, and
provide support for legacy 1G and 2G systems. When used with interWAVE StreamNet ATM Switches,
the Link CX can provide the radio links for a self-healing wireless mesh backhaul network to support
broadband ATM communications to support this application. These networks feature high reliability,
lower maintenance costs, improved scalability, and enhanced interference mitigation.
DSL providers are typically limited by the quality of existing copper lines to a short distance from the CO
(Central Office). To serve customers farther from the CO, DSLAMs (DSL Access Modules) must be used
closer to the customer site. The backhaul from DSLAMs to the CO has to be robust to reduce or
eliminate downtime, and must have sufficient bandwidth to support DSL traffic. When used with
StreamNet ATM Switches, the Link CX can provide the radio links for a self-healing wireless DSLAM
mesh backhaul network to support these requirements. See Figure 1-7 for a typical wireless mesh
backhaul network.
Figure 1-7 Typical Wireless DSLAM Mesh Backhaul Network
IW086201
High-Capacity Radio
Low-Capacity Radio
Switch Node/DSLAM
POP Aggregator