User's Manual
Table Of Contents
- 1 Preface
- 2 Overview
- 3 Features
- 3.1 Main Features
- 3.2 Adaptive Coding and Modulation (ACM)
- 3.3 Transmit Power Control (TPC)
- 3.4 2x2 Multiple-input and Multiple-output (2x2 MIMO)
- 3.5 Dynamic Frequency Selection (DFS)
- 3.6 Dynamic Channel Selection (DCS)
- 3.7 Retransmission
- 3.8 Configurable Uplink/Downlink Ratio
- 3.9 Quality of Service (QoS)
- 3.10 Power over Ethernet
- 3.11 Synchronization
- 3.12 Co-site Synchronization
- 3.13 OFDM Modulation
- 3.14 Low-density Parity Check (LDPC) Encoding
- 3.15 LLDP
- 3.16 Radio Port Performance Monitoring
- 3.17 Adaptive Noise Immunity (ANI)
- 4 Mechanical Structure and Interfaces
- 5 Product Structure
- 6 Management
- 7 Technical Specification
- 8 Standards
18
DragonWave Inc.Features
• Channel shutdown
When interference signal detected in operation channel exceeds the threshold, Lite
will notify the remote site and switch to another channel.
3.7 Retransmission
At unlicensed frequency band, especially in urban areas, the interference is not predict-
able due to the complicated and dynamically changing environment. The sporadic burst
of interference may result in packet loss (defective packet is also dropped by the
receiver).
Lite implements dynamic packet retransmission mechanism by which the corrupted or
lost packet is retransmitted until it is received correctly or the timeout reaches.
The retransmission function implements a negative acknowledgement (NACK) method.
The receiver explicitly notifies the sender when packets, messages, or segments were
received incorrectly and thus may need to be retransmitted, and the transmitter will
buffer the recent transmitted packets and retransmit the requested packets.