As there are more and more types of wireless communication technologies, there are more and more choices for customer, but different communication technologies have different characteristics, and we will choose suitable solutions according to the characteristics.

Common wireless communication technologies:

  • 블루투스
  • Wi-Fi
  • Technology based on IEEE 802.15.4 (실, Zigbee)
  • Z 파
  • Cellular low-power wide area network technology (NB-IOT, LTE-M)
  • Non-cellular low-power wide area network technology (LoRaWAN, Sigfox)

블루투스

블루투스 wireless communication technologies is a low-power wireless solution operating on the 2.4 GHZ ISM 주파수 대역. 수년에 걸쳐, Bluetooth 기술은 계속 확장되었습니다, and now has great flexibility in terms of distance, 대역폭, and communication topology to meet the needs of different IoT applications.

블루투스 echnical details:

현재 두 가지 Bluetooth 라디오 옵션이 있습니다: Bluetooth Classic and블루투스 저 에너지 모듈 (블루투스 르). 클래식 블루투스 (또는 br/edr), 오리지널 블루투스 라디오, 스트리밍 애플리케이션에 여전히 널리 사용됩니다, 특히 오디오 스트리밍. Bluetooth 저 에너지는 주로 장치간에 데이터가 자주 전송되는 저 대역폭 응용 프로그램에 주로 사용됩니다.. Bluetooth Low Energy는 매우 저전력 소비와 스마트 폰에서의 인기로 유명합니다., 태블릿 및 개인용 컴퓨터.

Bluetooth 저 에너지는 지점 간으로 나뉩니다, Star Topology, mesh Topology and broadcast topologies. 메쉬 토폴로지에서, nodes are directly connected without communicating with other nodes through the hub. 노드는 원래 소스 노드의 통신 범위를 벗어난 다른 노드로 데이터와 정보를 보낼 수 있습니다., expanding the network coverage in a large area. Related Bluetooth products：Silicon Labs Bluetooth Module SIG MESH | FSC-BT671

Wi-Fi 기술

Wi-Fi wireless communication technologies is the brand name of all IEEE 802.11 표준 무선 지역 네트워크 (wlan). Wi-Fi의 작동 빈도 대역은 일반적으로입니다 2.4 GHZ와 5 GHZ ISM, 그러나 새로운 버전의 Wi-Fi도 다른 주파수 대역을 사용합니다..

Wi-Fi technical details

Wi-Fi 버전이 많이 있습니다. Wi-Fi Alliance는 최근에 새로운 버전 번호 매기기 시스템을 채택했습니다.: Wi-Fi 1 (802.11비), Wi-Fi 2 (802.11에이), Wi-Fi 3 (802.11g), Wi-Fi 4 (802.11N), Wi -fi 5 (802.11AC) 및 Wi-Fi 6 (802.11도끼). 최신 버전은 다양한 응용 프로그램의 요구를 충족 할 수 있습니다., including longer distances, 더 높은 처리량과 더 큰 적용 범위. The most popular Wi-Fi topology is the star topology. 그러나 스타 토폴로지에서, 노드는 허브를 통해서만 서로 통신 할 수 있습니다..

실, Zigbee

IEEE 802.15.4 technology refers to the low-speed wireless personal area network (LR-WPAN) access layer.

실, Zigbee 기술적 인 세부 사항:

Thread and Zigbee wireless communication technologies are two technologies based on this specification. They are characterized by low power consumption and low data rate. IEEE 802.15.4 is mainly used in application scenarios where data is small, distance is short, and low power consumption is required at the same time. Although this technology also supports star topology, the most commonly used is mesh topology.

Z 파

Z-Wave wireless communication technologies was originally a lighting system control protocol, and later evolved into a home automation protocol managed by the Z-Wave Alliance.

Z 파 기술적 인 세부 사항

This proprietary technology uses 908/915 MHz in the US and 868 MHz in Europe. The different frequency bands are to avoid interference with the 2.4 GHz ISM band and expand coverage. This technology mainly uses a mesh topology. This technology is mainly used in smart home scenarios.

NB-IOT, LTE-M

LTE-M (LTE Cat-M1 or Long-Term Evolution for Machines) and NB-IoT (Narrowband Internet of Things) are both technical standards developed by 3GPP (3rd Generation Partnership Project), and are used for cellular devices.

These two technologies will coexist with other 5G technologies and are expected to become part of a long-term 5G IoT strategy. 5G is the general term for the fifth-generation cellular mobile communication technology, representing a high-speed network of 2 GBPS (it can even reach 100 Gbps in the future). 5G technology will reduce network latency and expand coverage (in terms of the number of devices connected to the network at the same time).

NB-IOT, LTE-M 기술적 인 세부 사항

LTE-M and NB-IoT Wireless communication technologies are different in characteristics, so the suitable application scenarios are also different. NB-IoT is best suited for simple applications that require low power consumption and low bandwidth, while LTE-M is best suited for real-time and mission-critical applications due to its higher data rate. The main difference between the two is speed and delay (LTE-M has higher speed and lower delay).

NB-IoT and LTE-M mainly adopt star topology structure.

LoRaWAN, Sigfox

LoRaWAN is an open source wireless network protocol maintained by the LoRa Alliance. LoRaWAN is built on the basis of LoRa, which is a proprietary modulation format developed by Semtech.

LoRaWAN, Sigfox 기술적 인 세부 사항:

LoRa only defines the lower layers of the network stack, while LoRaWAN defines the higher layers of the network stack. LoRaWAN is just one of many protocols built on LoRa. LoRaWAN is classified as a low-power wide area network (lpwan) 기술, which can achieve remote communication between devices with low power consumption.

Sigfox is also an LPWAN technology, but it is a proprietary technology provided by the French company Sigfox. The company is the only network operator of this technology.

Comparison of wireless data transfer module technologies

wireless communication technologies Comparison
Comparison of wireless data transfer module technologies