User's Manual

MBS-LP EDGE User Guide Document MBUD-0122v1.0
Wireless Matrix Proprietary and Confidential 11/16
Active Network (AN) Determination
The MBS2-LP periodically evaluates the Satellite and GPRS/EDGE Network coverage and
updates its Active Network based on a predefined Active Network Algorithm (not to be confused
with the MNR algorithm). In general, if a change in its Active Network occurs, the MBS2-LP will
inform the WIPG of the new Active Network value by sending an Active Network Message (ANM),
so that the WIPG can use the Active Network for its own MNR algorithm.
Magic Packet
WAW offers the Magic Packet (MP) feature to conserve battery life on a CSC while maintaining
Wireless Tether communications upon demand. Thus, a CSC can enter sleep mode and be
awaken by a Magic Packet whenever the Customer Host has data to send to the CSC (provided
that the CSC is in WLAN range of the MBS2-LP).
In-Yard Access
In-yard access provides the ability to send and/or receive data with lower latency, high
throughput, and reduced airtime expense by routing the data directly through a Customer-owned
In-Yard 802.11 network
When the MBS2-LP arrives in an In-Yard district, the MBS2-LP will associate with the AP at the
district. On successful association, the CSC sends or receives traffic directly to or from the
customer corporate network. As soon as the MBS2-LP leaves the AP WLAN coverage area, it
will go back to its original configuration (i.e., WAW IP).
When the MBS2-LP is not in the coverage area of any AP, it will forward packets received from
the serial connection to the WIPG, and the WIPG will route packets to the application host. The
returned traffic from host side will reach the CSC in the reverse fashion. See Figure 4 for a
graphical description.
This ability is achieved using Mobile IP, as well as the MBS2-LP’s 802.11b device in
infrastructure mode.