Mobile radio communications have evolved from analog systems in the late 80s, carrying only voice, to more robust GSM/GPRS voice systems, enabling the boom in text messaging,to the latest advances in mobile broadband brought by UMTS, HSDPA, and LTE. All radio communications make use of a highly regulated resource: a limited portion of the electromagnetic spectrum. Specific portions of that spectrum are allocated for use by particular technologies. Countries typically allocate GSM bands in 800 – 900 MHz and 1800 – 1900 MHz frequencies; UMTS bands are typically within the 1900/2100 MHz frequencies; and, LTE is found at 700/1900/2100/2300 MHz in the spectrum. It is a scarce and expensive resource.
Papers:
Directorate General of Post and Informatics Resource, Statistics 2014, Kominfo, 2015
Directorate for Research and Human Resource Development MICT, White Paper : Telecommunication and Informatics Indonesia, Buku Putih, MICT, 2013
In past ten years, the cellular network has been evolved to all IP packet based network, LTE-A, having higher data rates, deeper penetration into the markets.
Now a days broadband services are provided through mobile cellular networks. There has been further provision for device to device proximity based services and other features are been constantly added upto it.
Further in the coming 5G it is believed to be the merger of WiFi with cellular services providing ubiquitous networking capabilities based on pico-cells and home micro base stations (BTS).
Additionally there has been constant improvement in the energy consumptions of wireless networks, as throughput has been stepping up in an exponential fashion, and this leads to enormous amount of energy consumption.
So, there has been work going on in each module, be it the channel coding or source coding(video compression) and in terms of waveform design for non orthogonal access etc
Latency and end2end delay in the network is another crucial issue needed to be fixed for upcoming future generation.
and the list go on, further you can narrow down for any of the module in transmit/receive chain, each have its own requirements and challenges and people are working to fix them.
5G 5G 5G! Its going to revolutionize communication. Problem is providers/governments are struggling with massive infrastructure costs, many running in sandbox.
- Badges
- Science topic
- Similar topics
- Geoscience
- Asia
- India