A New Approach to Mobile Broadband Wireless Networks
xG has taken an an innovative approach to designing mobile wireless voice, video, and data communications that instills an unprecedented level of intelligence down to the end-user level of wireless networks. In the majority of wireless network technologies, including WiFi, CDMA, GSM, 4G and LTE, most of the intelligence resides within the network. It is the network that handles QoS, routing, switching, load balancing and handoffs while the radio itself remains fairly “dumb.” The primary function of the radio is to establish a wireless link between the user and the network on a specific channel within the allotted spectrum. If that channel becomes filled with RF interference resulting from natural sources or deliberate activities, the radio struggles to maintain the connection until packets get lost and the connection is terminated.
By contrast, xG Technology focused on that primary link between the wireless end user and the core network. The result is a smart radio — also known as a “cognitive radio” — that uses dynamic spectrum access to keep communications clear and precise. In layman’s terms, what xG has developed is a radio that is aware of its operating environment and conditions, and is able to make informed decisions on the best way to keep the data flowing without interruption, interference, or noticeable latency.
Like any wireless technology, the xG Technology’s xMax system establishes a link using a specific channel, and in the case of xMax, that is within the unlicensed 900 MHz radio spectrum. However, if the radio determines that the channel it is using is absorbing too much interference or enough RF noise to cause a communication breakdown, the radio seamlessly switches to another channel within the allotted spectrum. The spectrum xMax currently operates in contains 12 unique channels, and xMax radios scan all of them up to 33 times per second to determine which has the least interference. While it does this, the radio builds a table of available channels so it knows in advance exactly where it will go if the channel it is operating in becomes unusable.
The idea of a cognitive radio with active interference mitigation algorithms is at the heart of xG’s core technology foundation. Many other patented innovations have been incorporated into xG’s technology, including an extensive body of intellectual property in the following key areas:
- Dynamic Spectrum Access
- Interference Mitigation
- Novel compression methods (protocols, payload, signaling, etc)
- Uniquely programmed MIMO antennae and shielding
- Wired and Wireless Networks
- Media Access Control Protocols
The result is a mobile wireless broadband network that allows the use of any smart phone, tablet, rugged device, or laptop from any carrier or manufacturer, as well as all the applications wireless users are accustomed to, without modification. It also allows the wireless network to be deployed and expanded quickly and without complex network engineering or frequency planning, which helps to minimize overall network costs.
xG Technology’s extensive R&D activity has allowed it to amass a broad intellectual property portfolio that includes over 100 awarded patents and pending patent applications. xG’s intellectual property is available for licensing in both domestic and international markets.