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Carrier
Carrier

Excelwave creates solutions for the congested spectrum and converging technologies

Nowadays the spectrum of carrier networks is mainly assigned under 6GHz which makes it already very crowded. Frequency reallocation has been going on for decade and will continue in many countries to harvest spectrum resources for newer technologies, such as the reuse of spectrum spared by the retiring 2G, 3G and eventually 4G networks, or by the migration of analog broadcasting to digital broadcasting, for example the 700MHz band in the states. Meanwhile, 600MHz and some other new bands are considered for auction for carrier networks.  The 5G networks consume a lot more bandwidth and will aggregate sub 6GHz and the bands above 6GHz. The spectrum plans for 5G in many countries mainly focus on 24.25-27.5GHz, 31.8-33.4GHz, 40.5-43.5GHz as well as 3.4-3.8GHz and other under 6GHz bands including 700MHz for area and inbuilding coverage.

When tremendous amount of smart home, smart city, self-driving applications created from IOT, ITS and other emerging technologies spread over, following consequences need to be considered:

  • Performance susceptible to interference
  • Spectrum overcrowding
  • Consistently co-sited radio-based sensors 
  • Frequency conflict when spectrum relocation is in progress

Filtration before radio transmission and receiving is crucial to keep spectrum environment clear in such an evolving wireless landscape. Excelwave offers a wide range of custom filter products covering 30-6000MHz range which have already been extended over 6000MHz through custom design.

From 2G, 3G to 4G LTE, then 4.5G LTE-A and 5G, the communication technologies are evolving and converging faster than ever. 802.11ac, 802.11ad and 802.11ax and LTE, LTE-A will coexist for a while. With the advancement of LTE-U, LTE and WiFi will aggregate along with the spectrum integration. Faster connection, seamless service and higher spectrum and network efficiency are expected.  With the technology development in progress, wireless network cells are becoming smaller and smaller, from macro, micro, pico to Femto. Smaller antennas and less transmission power are needed in the smaller systems, which makes the transceivers and antennas more integrable. Meanwhile, DAS and other cellular architectures will converge. 

MIMO antennas have been widely used in 4G networks. Massive MIMO and 3D-MIMO will be the major antenna solutions in 5G system. Excelwave is innovating MIMO antenna technologies for 5G networks. For more information, please contact info@excelwavetechnologies.com.