Proxim ClearConnect™ is a suite of interference mitigation technologies ensuring robust and reliable communications in high-density wireless deployments. Continuous analysis and automatic link tuning deliver optimal performance at all times.
DDRS (Dynamic Data Rate Selection)
DDRS enables dynamic adjustment of the data rate for transmission of wireless traffic. This feature is especially crucial in point-to-multipoint networks when different SUs can support various data rates because of the differing distances from the BSU. With DDRS, WORP® dynamically optimizes the wireless data rate to each of the SUs independently, keeping the overall net throughput at the highest possible level.
Flexible Channel Size Support
Flexible channel bandwidths, typically 20, 40 and 80 MHz maximize performance based on the available spectrum. Where needed, support for smaller channel sizes, 5 and 10 MHz are available on specific products.
Proxim Wireless Outdoor Routing Protocol or WORP® is engineered from the ground up to optimize the performance of multi-stream voice, video, and data over wireless networks. WORP® is the foundation for the efficiency and security inherent in every Proxim Point-to-Point and Point-to-Multipoint system.
Designed for deterministic network access, Proxim WORP® adapts to higher traffic loads and number of subscribers, while ensuring that each Subscriber Unit (SU) can take advantage of the total network bandwidth for reception and transmission.
Where needed, a synchronized variant, WORP® sync is available on the Tsunami 800 series products. WORP® Sync is a TDMA (Time Division Multiple Access) based implementation of Proxim’s WORP, which eliminates co-location interference. With WORP® Sync, all BSU’s transmission and reception are time-synchronized using a GPS pulse signal.
Flexible Center Frequency
Provides the ability to set the operating channel center frequency in 1 MHz steps to ensure the radio link is using the cleanest spectrum available.
The Satellite Density setting helps to achieve maximum bandwidth in a wireless network. It adjusts the receive sensitivity of the radio interface and improves operation in environments with high noise levels. Reducing the sensitivity of the device enables unwanted “noise” to be filtered out.
ACS (Automatic Channel Selection)
An indispensable installation tool, the automatic channel selection feature works during network boot and allows Proxim’s radios to select the best channel with the least inference.
DCS (Dynamic Channel Selection)
This feature continuously monitors the packet retry percentage in a given radio link. If retries exceed a set threshold, then it dynamically searches for a new channel with less interference.
ATPC (Adaptive Transmit Power Control)
ATPC enables dynamic adjustment to transmit power for each SU to achieve desired link Signal to Noise Ratio without spilling additional power or interference into the environment. ATPC is also used to ensure that the radio accurately follows local Equivalent Isotropic Radiated Power (EIRP) rules.
HARQ (Hybrid Automatic Retransmission Request)
ARQ or automatic re-transmission request examines packets at the PHY layer and request a resend of any damaged packets.
Proxim radios use a patented Hybrid ARQ (HARQ) implementation which employs link layer Forward Error Correction for over-the-air (OTA) packet buffering. Proxim HARQ uses an optimized algorithm ensuring only bad or dropped packets are retransmitted improving duty cycle utilization and avoiding the additional delay or latency seen in typical ARQ processes. With Hybrid ARQ, retransmission only takes place with data packets, avoiding any additional delay to latency-sensitive traffic such as voice or video.
Proxim Point-to-point and point-to-multipoint products include a built-in Spectrum Analyzer that displays a real-time graphical portrayal of all radiation, or RF Interference conditions in the available band to allow for the manual selection of the best channel for link operation.