Fujitsu offers way to double capacity in wireless cells - sullivanwouniend1968

Fujitsu is developing engineering that doubles the capacity of man-to-man cells in pitted networks through task-sharing and efficient scheduling.

The come nea effectively allows for transmission and response of radio signals on the same absolute frequency. The company sees it as a step toward the next stage in cellular network standards.

Since the current energy spectrum used by 4G/LTE leaves little room for the deluge of information anticipated as mobile devices proliferate, researchers cause been trying to increase capacity by using the same relative frequency for simultaneous transmission and reception, a proficiency known as full duplex.

Peter Sayer/IDG Newsworthiness Robert William Service

Fujitsu hopes to enable radio set carriers to make over fitter use of infrastructure and spectrum resources by allowing simultaneous transmission and reception on the synoptical frequencies

Users could enjoy the same speeds and capacity with only half the spectrum, and it could preserve carriers billions of dollars on auctions for spectrum licenses.

But simultaneous transmission and receipt on the Sami frequency has proven very elusive because of the massive interference caused by transmitting signals, which put up leak into neighboring receivers.

This someone-interference effectively drowns out the much weaker incoming signals, forcing two-way radio systems to adopt "half-duplex" transmissions, typically using either different frequencies OR antithetical times for transmission and reception.

Fujitsu is sidestepping the hinderance trouble by putting transmitters and receivers in diverse places. allocating sending and receiving to different base stations, a spokesman said.

In its envisioned system, man-sized base Stations would transmit data to mobile devices, while smaller base stations would get signals from the devices.

The technology would automatically choose two devices in a small cell that have the least mutual interference when using the same frequence. The transmission power would be controlled to reduce interference on the same relative frequency.

Meanwhile, a scheduling algorithm industrial past Fujitsu cuts down on the indicate-processing workload past senior devices in the network according to transmission great power and which devices are receiving or transmitting.

Another algorithmic program "accurately picks transmission-index candidates supported happening the group of devices, which reduces the processing workload to approximately one-fortieth overall," the company aforesaid.

The result is that single small cells can double their communication capacity, the company said. The technology could constitute particularly reclaimable in jammed unrestricted areas such as shopping malls and sports stadiums, where cellular electrical capacity can be squeezed.

Fujitsu hopes to implement the technology around 2023. It is presenting the research this workweek at the IEEE Vehicular Technology Conference in Boston.

There are many contenders for viable full-duplex technology. Earlier this year, a team at Columbia University in New York announced IT had created overloaded-duplex radio integrated circuits. A Stanford University spinoff called Kumu Networks has also been working on self-interference canceling algorithms. Researchers at the University of Golden State, Riverside likewise reinforced an in-radio signal-canceling circuit.

Source: https://www.pcworld.com/article/423460/fujitsu-offers-way-to-double-capacity-in-wireless-cells.html

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