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Most wireless communications that you can find today are of single hop. Likewise cellular phone connects directly to a cellular base station; computer or smart phone connects directly a wireless router (or access point in WLAN terminology). So why do we need any multihop wireless?

A less often discussed triangle about wireless communications is of: Bandwidth, Range, Power. People wants high bandwidth (yes definitely), low power (for battery and low radiation etc.), so it has to get to smaller range; and that is the “physical law” about it. Yes, wireless or mobile communication can be as fast as fiber in smaller range (e.g., <10 meters). Short range radio is just the only cure to the wireless bandwidth thirsty in telecom.

Multihop wireless communication is a natural way to extend the “range/coverage” of any short range radio, where any signal or data packets can be relayed from terminals or stations within the base-station coverage, to a much larger network coverage. However, traditional multihop wireless networking suffers from bottlenecks along routing paths, as introduced by interferences and congestion, which are just well resolved by OPM. The OPM wireless networking simply extends the coverage of short range radio while preserving the wireless bandwidth in real-time.

Comparison of Path Selection in Multihop Wireless

For example, in some indoor location/tracking networks that we have deployed, the terminals (location cards) and stations (location stations) form a dynamic multihop wireless network that doesn’t need any cabling in complex environment. They are all tethered together by pure wireless: it is a seamless wireless network of low power, high bandwidth, and ubiquitous coverage. So with the OPM radios, the future of wireless communication will not just be the last hop, but the last a number of hops. And that is turning out to be a liberation in telecom and wireless Internet!

 

OPM15-E radios (FCC ID: A3Q-OPM15E1, IC: 10131A-OPM15E1) have received certifications as a single radio module from FCC (Federal Communications Commission) and IC (Industry Canada).

With these certifications, OEM integrators and developers may now have the OPM15 radio to power wireless applications and innovations without re-certificating the end system in U.S., Canada and other countries that rely on the regulatory approvals of FCC and IC.

FCC/IC Certifications are of a key milestone achievement for the OPM15 radio product, and open up the rapidly growing markets in the United States, Canada, and globally. OPM15 provides for the best solution in low-power wireless networks, with the out-of-the-box OPM networking to offer the most reliable and cost-effective bandwidth in the industry, supporting data, voice, image, and low-bandwidth video in a scalable multi-hop environment. Deployed and prospective applications include: location/tracking networks, real-time wireless sensor networks, industrial monitoring and controlling, smart healthcare, smart utilities, and others.

 

Want to power your network with batteries? Radio usually takes a lot of power when it is transmitting and receiving, but a lot less power when it is sleeping. The on/off control is called duty cycle in radio terminology. In the world of low power wireless, active power consumption is usually somewhere around 100mW, depending on rate and range configurations; and sleeping power consumption is usually at uW level.

So you have heard stories of multi-year battery life? It can be true only if you have a perfect duty-cycle scheme for the radio so that it can sleep most of the time. Otherwise, your system must have a bulky bulky and expensive expensive battery……

Good duty-cycle schemes have been difficult to design to meet applications, since you would have to consider when and how much network traffic will the system generate. And every relay radio on routing path has to be awake. When the radio is sleeping, it doesn’t hear anything or send anything.

OPM technology has made this super easy: simply because our network is so dynamic that any single node sleeping will not create any bottleneck to the system as a whole. For example, the OPM15 radio can reach 1% duty cycle, at a small sacrifice of initial delay (2 sec) when system has traffic to send. Yes, that is: you can increase the battery life by up to 100 times!

In addition, considering an OPM radio can have 10 times higher application bandwidth than a traditional Zigbee or WiFi radio. The same amount of data requires 10 times less radio transmission (on) time, so more time can be spent in sleeping.

So contact us if you are having difficulty in reducing the power of your network application; and feel the next-generation power…!

from OMESH Engineers

 

OMESH’s patented technology provides the most reliable and cost-effective wireless bandwidth, as a network platform to the applications of wireless systems. The technology differentiation from traditional wireless networking can be comparable to how packet-switched technology (Internet etc) has differentiated from circuit-switching (telephone networks) in cable networks. The full potential commercial impact can also be comparable: it is creating a new world where high-bandwidth and low-cost communications become possible, now for wireless and mobile devices.

Our technology differentiates from state-of-the-art, by its opportunistic network resource utilization of both spectrum bandwidth and mesh station/radio availability. On the contrary, state-of-the-art wireless networking assumes that those resources can be predetermined, by importing the protocol stack from cable networks. For example, in the traditional protocol stack, MAC (Media Access Control) layer allocates spectrum resources to wireless linkage; and network layer sets up routing path from source to destination based on established topology. In large scale wireless systems, the basic network architecture introduces bottlenecks along both wireless links and stations: volatile spectrum availability is typical in unlicensed bands where interference prevails; and random station/radio availability is also often encountered due to the dynamic traffic load and other factors such as radio failure.

By taking the cross-layer architecture that merges network routing into wireless link and RF design, OMESH technology creates a dynamic (fluid) wireless network without predetermined topology and spectrum allocation. For example, in multi-hop wireless communications, every packet takes opportunistically available paths in the wireless network, and with opportunistically available spectrum on each hop. The network-resource utilization can thereby reach its instantaneous maximum, disregarding volatile changes and the demand placed on the network.

As an analogy, given a data packet as a “car”, traditional wireless networking is analogous to driving the car according to a static roadmap; whereas OMESH’ networking is analogous to driving with the guidance of a smart GPS integrated with real-time traffic information.

With regards to the network scalability, state-of-the-art technologies can suffer from 1) complexity increases fast with network scale; 2) performance decreases fast with network scale. Usually both can be getting worse exponentially in reality due to the complexity of maintaining routing paths and routing tables. For OMESH technology: 1) complexity can be constant with network scale due to instantaneous local observations; 2) performance can increase with network scale due to more alternative paths to exploit. It makes cheap large-scale wireless networks feasible, while competing technologies requires bulky and expensive boxes.

The results are COOL! Our core technology can provide the most reliable and cost-effective bandwidth for wireless systems. Compared to traditional wireless networking, it has been proved to achieve 10 times higher throughput (bandwidth) in wireless networking, with a fraction of costs in terms of materials, installation, and maintenance. As large wireless infrastructures have always been expensive to build and maintain (e.g., sensor networks, cellular towers), wireless bandwidth has been expensive to attain. The full commercialization of the technology will be a game-changer that can bring the best cost-effective wireless connectivity to “everybody” and “everything”. “Everybody” can be current telecommunications to address the pain of insufficient bandwidth and coverage of wireless Internet as consumed by smart phones; and “everything” can bring smart wireless connectivity to sensor-devices in many traditional industries, including smart grid and water networks, mining, healthcare, emergency communications, agriculture, home/building automation, indoor location networks, and retailers.

We are supplying the network engine of future smart infrastructure. The technology can make wireless communications scalable and affordable by reaching ubiquitous, where then the full impacts can be comparable to: 1) what packet-switched network technology (Internet) has brought to personal communications; 2) what mobile communication technology (cellular) has brought to telephony.

Networking method Propagation medium Network traffic
Circuit Switched (Telephony) Reliable Predetermined
Packet Switched (Internet) Reliable Random
OMESH Technology Unreliable Random
 

OMESH’s patent on wireless networking method is granted in United States (Patent No. 7,760,649 B2), officially on July 20th, 2010. This patent describes how we can achieve much better and scalable wireless network performance with much less complexity, as compared to traditional wireless networks.

With other seven pending filings on HW/SW and networking, these patents define our technology scope, and why we can offer the coolest wireless networks in the industry!