User`s guide

Appendix A - Network Entry Procedure A
E6651A User’s Guide 177
The Initial Ranging Procedure and Negotiation of Basic
Capabilities as seen in the Measurement Window of the
E6651A are shown in Figure 47.
Figure 47 Measurement Window Showing the Initial Ranging Procedure
and Negotiation of Basic Capabilities
The messages seen in the Initial Ranging Procedure and
Basic Capabilities Negotiation of Figure 47 are:
Initial Ranging Region
Information
The SS sends this message to provide ranging detection to
the BS using information received in the Initial Ranging
Region. This message serves as the initial request by the SS
for uplink resources from the BS. Information contained in
this message includes:
• Frame Number (FN): The frame number at which the BS
detected Initial Ranging
• Detected Position (DP): The time at which the BS
detected Initial Ranging
• Ranging Code (RC): The Ranging Code value sent by the
BS and then used by the SS to gain access to allocated
uplink resources
• Frequency Offset (FO): The Frequency Offset detected
between the SS and the BS during Initial Ranging
• Ranging Matching Rate (RM): The ratio of valid Initial
Ranging attempts to total ranging attempts