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Radio Resource Management under Unified Wireless Networks
Document ID: 71113
Introduction
This document details the functionality and operation of Radio Resource Management (RRM) and provides an
in-depth discussion of the algorithms behind this feature.
in-depth discussion of the algorithms behind this feature.
Prerequisites
Requirements
Cisco recommends that you have knowledge of these topics:
Lightweight Access Point Protocol (LWAPP)
Common wireless LAN (WLAN)/radio frequency (RF) design considerations (knowledge comparable to
that of the Planet 3 Wireless CWNA certification)
that of the Planet 3 Wireless CWNA certification)
Note:
Client Aggressive Load-Balancing and Rogue Detection/Containment (and other Cisco Intrusion
Detection System [IDS]/Cisco IOS® Intrusion Prevention System [IPS] features) are not functions of RRM and
are beyond the scope of this document.
are beyond the scope of this document.
Components Used
This document is not restricted to specific software and hardware versions.
Conventions
Refer to
Cisco Technical Tips Conventions
for more information on document conventions.
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
Upgrading to 4.1.185.0 or Later: What to Change or Verify?
Radio Resource Management: Tips and Best Practices
RF Grouping and Tx Power Threshold
Coverage Profile and Client SNR Cut-Off
Neighbor Message Frequency (RF Group Formation)
Use of On-Demand Option
Load Balancing Window
Radio Resource Management: Introduction
Radio Resource Management: Concepts
Key Terms
A Bird’s-Eye View of RRM
RF Grouping Algorithm
Dynamic Channel Assignment Algorithm
Transmit Power Control Algorithm
Coverage Hole Detection and Correction Algorithm
Radio Resource Management: Configuration Parameters
RF Grouping Settings via the WLC GUI
RF Channel Assignment Settings via the WLC GUI
Tx Power Level Assignment Settings via the WLC GUI
Profile Thresholds: WLC GUI
Radio Resource Management: Troubleshooting
Verifying Dynamic Channel Assignment
Verifying Transmit Power Control Changes
Transmit Power Control Algorithm Workflow Example
Coverage Hole Detection and Correction Algorithm Workflow Example
Debug and Show Commands
APPENDIX A: WLC Release 4.1.185.0 – RRM Enhancements
RF Grouping Algorithm
Dynamic Channel Assignment Algorithm
Tx Power Control Algorithm
Coverage Hole Algorithm
SNMP Trap Enhancements
Cosmetic/Other Enhancements
Load-Balancing Changes
APPENDIX B: WLC Release 6.0.188.0 – RRM Enhancements
RRM Fixes for Medical Devices
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