Cyfrowy Polsat Group is the first operator in Poland to implement, in its LTE Plus Advanced network, the TDD technology which operates in the 2600 MHz frequency band. This means that the company will offer Internet access to its customers while using a total of 95 MHz of radio spectrum in various LTE carrier frequencies. The implementation of the TDD technology is primarily intended to increase network capacity in specific locations as well as to offer even better Internet access to customers. Several dozen LTE TDD stations are currently on-air all over the country.
TDD (Time Division Duplex) and FDD (Frequency Division Duplex) are the two different methods of implementation of LTE data transmission. The difference consists in the way the spectrum is used for transmitting data to and from a customer: the FDD technology uses two, permanently separated, parts of the bandwidth to transmit data in both directions simultaneously, while the TDD technology uses one, common chunk of the bandwidth for alternating, in time, the transmission of the data in the uplink and downlink directions. Also, slightly different parts of the frequency bands are used for the needs of the TDD and FDD technologies, which has enabled Cyfrowy Polsat Group to offer access to the Internet based on the 60 MHz of spectrum that it holds in the 2600 MHz band ( while using the 20 MHz FDD carrier and the 2x20 MHz TDD carriers). Similarly as in the case of other LTE carrier frequencies, the new resources can be also aggregated with other FDD carriers.
Just like any other innovation, the implementation of the TDD technology in LTE Plus Advanced network requires relevant hardware that will support the technology on the customer’s end. And here comes a good news for the customers using the ODU-IDU 300 Home Internet offering – the devices they use also support the LTE TDD technology seamlessly! Also many smartphone users will be able to enjoy the new technology without a problem since the growing trend among leading hardware manufacturers is to add the ability to support the LTE TDD 2600 MHz technology to the devices they offer.