Technology

WLAN

Redpine’s pioneering technology innovation in its Wi-Fi products is the foundation for applicability in the Internet of Things, M2M Communications, mobile and computing space, and the digital home and networking areas.

True Technology Source

All the technology that goes into Redpine’s Wi-Fi products is developed and owned by Redpine. Extensive innovation and optimization has gone into the core components of its product lines. These include the CMOS RF transceiver, the Wi-Fi MAC/Baseband processor, the CPU that runs the protocol and application software, the range of modules tailored for various applications and all the firmware and embedded software that implement standards-compliant protocol.

Extended Battery Life

Redpine addresses the problem of extending battery life of wireless embedded devices on several fronts, with a substantial patent portfolio backing its innovations in this area. System architecture ensures optimal construction of subsystems and delineation of functions between software and hardware. High performance wireless processing – involving the RF, analog, and baseband processor – enables the use of higher data rates reducing the time spent in energy consuming active states. Fine grained power control ensures blocks and subsystems operate in full power only when needed. Fast acting power mode decision making provides instantaneous and transparent setting of optimal modes. Dynamic trade-off between performance and power helps use the right operational mode for each step in an operational profile. Ultra low power sleep timers enable the entire system to be turned off while awaiting the arrival of the next update event seconds, minutes, or hours later. Special purpose hardware engines offload energy consuming security and intensive data handling operations. And extensive firmware handles enable application level optimization of the system’s power profile.

The Advantage of 5 GHz

By end of 2012, there were over five billion WLAN devices shipped, and over the next five years this figure is expected to reach 20 billion. The result of this growth is visible already – crowded channels with noticeable data drop-outs, reduced quality of service and even difficulty to connect. The 5 GHz band, with its 24 distinct channels as opposed to three in the 2.4 GHz band, is a solution. However, the use of all 24 channels requires adhering to DFS functionality – to avoid interfering with radar in the vicinity. Redpine has been offering dual-band – 2.4 GHz and 5 GHz – modules for industrial grade embedded applications for several years. Redpine’s hardware assisted radar detection algorithms open up the use of all 5 GHz channels even in systems built around low-cost microcontrollers offering client or AP functionality.

ThreadArch® Processor

Redpine employs its ThreadArch multi-thread processor that incorporates many of its patented innovations, to run WLAN protocol, networking protocol, and applications offloading all connectivity requirements from the host. The processor’s multiple configurable threads efficiently execute critical real-time tasks that are independent of each other – providing higher data throughput as well as reducing power consumption.

Standards compliant wireless connectivity is protocol intensive. There is a significant load on software or firmware in an interoperable wireless system. By carrying out all protocol processing to the network layer on the ThreadArch processor, Redpine’s modules truly offer zero load on the host processor for wireless connectivity requirements.

Embedded Access Point and Wi-Fi Direct

There are scenarios where embedded devices may not be able to use the existing wireless infrastructure. Redpine’s embedded access point modes or Wi-Fi Direct mode comes to the rescue – offering a standard Access Point view and allowing all types of Smartphones and handheld devices to connect to the embedded system for control or monitoring functions. And continuing to offer zero load on the host processor.

Simultaneous Dual-band

High throughput and high Quality of Service (QoS) requirements are common in a number of applications, especially those involving PC notebooks, tablets, and Smartphones. The congestion in the 2.4 GHz band often comes in the way of the desired user experience in these applications. Moving to 5 GHz would be an instant fix. However, the devices and routers may still be required to connect to embedded devices or networks in the 2.4 GHz band for maintaining connectivity to the Internet of Things. A solution commonly adopted in routers is to use two separate chipsets – one in each band. Such an approach addresses the performance requirement for such routers, but is not feasible for implementation in handhelds due to the cost and power-consumption implications. Redpine’s MIMO products operate simultaneously in both bands in a configurable manner. For example, the 3x3 chipset can be software-configured to support a single 3x3 802.11n link, a 2x2 link at 5 GHz and a single-stream link at 2.4 GHz, or other combinations.