1. Bluetooth wireless technology is suitable for voice and data applications
2. Bluetooth wireless technology uses the unlicensed 2.4 GHz band
3. The range of Bluetooth wireless technology depends on the specific application. The Bluetooth specification requires a minimum operating range of 10 meters or 100 meters, depending on the type of Bluetooth device, but this technology has no range limitation. Manufacturers can adjust their configuration to support the distance required by the use cases they enable.
4. The peak data rate of EDR is 3 Mbps
5. Bluetooth wireless technology can penetrate three-dimensional objects
6. Bluetooth technology faces all directions and does not require the connected device to be placed within the visible range
7. Security has been and continues to be the primary link in the development of the Bluetooth specification. Bluetooth specification supports three security modes
Ultra Wide Band (UWB)
1. UWB technology suitable for personal area networks has unique features of low energy consumption (about 1mW/Mbps) and high data throughput (up to 480 Mbps).
2. WiMedia UWB is an internationally recognized standard (ECMA-368, ISO/IEC 26970 and ECMA-369, ISO/IEC 26908), which has obtained regulatory approval in major global markets (including the United States, the European Union, South Korea and Japan). It is expected that regulatory approvals will also be obtained in other countries (such as China and Canada) in the near future.
3. Under ideal circumstances, UWB technology has low energy consumption, low price, high speed, a wide range of usable radio frequency spectrum, can penetrate obstacles (such as doors) to transmit signals, and has a wide range of applications (such as national defense, Industrial, household, etc.).
4. WiMedia UWB adopts the "universal radio platform" approach so that multiple applications can use the same radio frequency.
5. WiMedia UWB can achieve a data rate of 480Mbps within a few meters, and a data rate of about 110 Mbps within a range of 10 meters.
6. Although wireless USB initially used UWB technology, it is expected that Bluetooth high-speed solutions will not encounter the same problems in terms of performance and interoperability due to the specification development and qualification process adopted by the Bluetooth SIG.
7. The Bluetooth SIG announced its intention to cooperate with UWB in May 2005 to develop high-speed Bluetooth specifications that can use UWB radios
Certified wireless USB
1. Speed: The transmission speed of wireless USB is expected to reach 480 Mbps within a range of 2 meters, and 110 Mbps within a range of 10 meters. Wireless USB hub device can run up to 127 wireless USB devices
2. Wireless USB will operate based on the UWB radio promoted by WiMedia Alliance.
3. Allow an end-to-end connection between the device and the wireless USB hub device
4. Intel established the Wireless USB Promoter Group in February 2004
5. USB Implementers Forum, Inc. (USB-IF) tests and certifies wireless devices based on "certified wireless USB"
Wi-Fi (IEEE 802.11)
1. The implementation cost of Bluetooth technology is one-third of Wi-Fi
2. The power of Bluetooth technology is one-fifth of Wi-Fi
3. Wi-Fi Alliance tests and certifies 802.11-based wireless devices
4. 802.11a: This standard uses OFDM, uses the 5 GHz band, and the highest data rate is 54 Mbps
5. 802.11b: This standard uses the 2.4 GHz band, the highest data rate is 11 Mbps, and DSSS is used. 802.11b is the initial version of the Wi-Fi standard
6. 802.11g: This standard runs on the 2.4 GHz band, uses OFDM, and has a maximum data rate of 54 Mbps. This standard is backward compatible with 802.11b
7. 802.11e: This standard can improve the quality of service
8. 802.11h: This standard is a supplement to 802.11a in Europe and provides spectrum and power control management functions. Under this standard, the 802.11a specification adds dynamic frequency selection (FS) and transmission power control (TPC)
9. 802.11i: This standard is suitable for enhanced security occasions. These include the Advanced Encryption Standard (AES). This standard is not fully backward compatible, and some users will need to upgrade their hardware. Full 802.11i support is also known as WPA2
10. 802.11k: According to development needs, the revised version of this standard enhances the radio resource management function of 802.11 networks
11. 802.11n: This standard is expected to use the 5 GHz band, and the maximum data rate will exceed 100 Mbps (but some solutions are trying to reach more than 500 Mbps). 802.11n will be better than other 802.11 standards in handling wireless multimedia applications
12. 802.11p: This standard will use the 5.9 GHz spectrum allocated to the automotive industry. This standard will be the basis for Dedicated Short Range Communications (DSRC) in North America. DSRC will enable communication between cars and cars and between vehicles and roadside infrastructure
13. 802.11r: The revised version of this standard will improve the ability of users to roam between access points or base stations. The special group to develop this standard was established in the spring and summer of 2004
14. 802.11s: According to development needs, the revised version of this standard will allow the use of mesh networks in 802.11 networks. The special group to develop this standard was established in the spring and summer of 2004
WiMAX (Worldwide Microwave Interoperability Access and IEEE 802.16)
1. WiMax is a wireless metropolitan area network (MAN) technology
2. WiMax covers a range of 50 kilometers, and the data rate is 70 Mbps. The general unit has a shorter range
3. The original 802.16 standard uses the 10-66 GHz band and requires it to be in the visible range
4. The recently completed 802.16a standard uses the 2 to 11 GHz band, but does not need to be in the visible range
5. Regulatory approvals in Europe are delayed due to problems in the use of 2.8 GHz and 3.4 GHz bands
6. Support vehicle movement at speeds between 20 and 100 km/h. The 802.16e standard is suitable for portable mobile applications
7. IEEE 802.16a and ETSI HIPERMAN (High Performance Wireless Metropolitan Area Network) share the same PHY and MAC. 802.16 was designed for compatibility with European standards from the beginning
8. This technology was created to compete with DSL and cable modem access, and is suitable for areas with wiring difficulties such as rural areas
WiBro (Wireless Broadband)
1. Mobile Internet Service (WiBro) provides high data rate wireless Internet access anytime, anywhere through PSS (Personal User Station) in a fixed or mobile environment. Mainly applicable to South Korea based on TTA specifications
2. 2300-2400 MHz, TDD, OFDMA, channel bandwidth 10 MHz, etc.
3. The system will support mobile users driving up to 60 km/h
4. Throughput (per user) maximum: download / upload = 3/1 [Mbps]; minimum: download / upload = 512/128 [Kbps]
5. Will be launched in the first quarter of 2006
1. IrDA is used to provide wireless connection for devices that are usually connected by cables. IrDA is a point-to-point, narrow-angle (30° cone range) dedicated data transmission standard, designed for operation at a distance of 0 to 1 meter, and a speed of 9600 bps to 16 Mbps
2. IrDA cannot penetrate solid objects. Compared with other wireless technologies, it has fewer data exchange applications
3. Main applications of IrDA