Wireless phone standards have a life of their own. You can tell, because they're spoken of reverently in terms of generations. There's great-granddad who's pioneering story pre-dates cellular, grandma and grandpa analog cellular, mom and dad digital cellular, 3G wireless just starting to make a place for itself in the world, and the new baby on the way, 4G.
Most families have a rich history of great accomplishments, famous ancestors, skeletons in the closets and wacky in-laws. The wireless scrapbook is just as dynamic. There is success, infighting and lots of hope for the future. Here's a brief snapshot of the colorful world of wireless.
First of all, this family is the wireless telephone family. It is just starting to compete with the wireless Internet family that includes Wi-Fi and the other 802 wireless IEEE standards. But it is a completely different set of standards. The only place the two are likely to merge is in a marriage of phones that support both the cellular and Wi-Fi standards.
Wireless telephone started with what you might call 0G if you can remember back that far. The great ancestor is the mobile telephone service that became available just after World War II. In those pre-cell days, you had a mobile operator to set up the calls and there were only a handful of channels available.
The big boom in mobile phone service really began with the introduction of analog cellular service called AMPS (Analog Mobile Phone Service) starting in 1981. And I would prefer to skip the story in between and talk about the latest stuff in the air.
Most families have a rich history of great accomplishments, famous ancestors, skeletons in the closets and wacky in-laws. The wireless scrapbook is just as dynamic. There is success, infighting and lots of hope for the future. Here's a brief snapshot of the colorful world of wireless.
First of all, this family is the wireless telephone family. It is just starting to compete with the wireless Internet family that includes Wi-Fi and the other 802 wireless IEEE standards. But it is a completely different set of standards. The only place the two are likely to merge is in a marriage of phones that support both the cellular and Wi-Fi standards.
Wireless telephone started with what you might call 0G if you can remember back that far. The great ancestor is the mobile telephone service that became available just after World War II. In those pre-cell days, you had a mobile operator to set up the calls and there were only a handful of channels available.
The big boom in mobile phone service really began with the introduction of analog cellular service called AMPS (Analog Mobile Phone Service) starting in 1981. And I would prefer to skip the story in between and talk about the latest stuff in the air.
LTE (Long Term Evolution) is the project name of a new high performance air interface for cellular mobile communication systems. It is the last step toward the 4th generation (4G) of radio technologies designed to increase the capacity and speed of mobile telephone networks. Where the current generation of mobile telecommunication networks are collectively known as 3G (for "third generation"), LTE is marketed as 4G. However, it does not fully comply with the IMT Advanced 4G requirements. Most major mobile carriers in the United States and several worldwide carriers have announced plans to convert their networks to LTE beginning in 2009. The world's first publicly available LTE-service was opened by TeliaSonera in the two Scandinavian capitals Stockholm and Oslo on the 14th of December 2009. LTE is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) which will be introduced in 3rd Generation Partnership Project (3GPP) Release 8. Much of 3GPP Release 8 will focus on adopting 4G mobile communications technology, including an all-IP flat networking architecture. On August 18, 2009, the European Commission announced it will invest a total of €18 million into researching the deployment of LTE and 4G candidate system LTE Advanced.
While it is commonly seen as a mobile telephone or common carrier development, public safety agencies in the US have also endorsed LTE as the preferred technology for the new 700 MHz public-safety radio band. Agencies in some areas have filed for waivers hoping to use the 700 MHz spectrum with other technologies in advance of the adoption of a nationwide standard.
While it is commonly seen as a mobile telephone or common carrier development, public safety agencies in the US have also endorsed LTE as the preferred technology for the new 700 MHz public-safety radio band. Agencies in some areas have filed for waivers hoping to use the 700 MHz spectrum with other technologies in advance of the adoption of a nationwide standard.
The LTE specification provides downlink peak rates of at least 100 Mbps, an uplink of at least 50 Mbps and RAN round-trip times of less than 10 ms. LTE supports scalable carrier bandwidths, from 20 MHz down to 1.4 MHz and supports both frequency division duplexing (FDD) and time division duplexing (TDD). Part of the LTE standard is the System Architecture Evolution, a flat IP-based network architecture designed to replace the GPRS Core Network and ensure support for, and mobility between, some legacy or non-3GPP systems, for example GPRS and WiMax respectively.
The main advantages with LTE are high throughput, low latency, plug and play, FDD and TDD in the same platform, an improved end-user experience and a simple architecture resulting in low operating costs. LTE will also support seamless passing to cell towers with older network technology such as GSM, cdmaOne, W-CDMA (UMTS), and CDMA2000. So people, watch the 4G magic soon.
The main advantages with LTE are high throughput, low latency, plug and play, FDD and TDD in the same platform, an improved end-user experience and a simple architecture resulting in low operating costs. LTE will also support seamless passing to cell towers with older network technology such as GSM, cdmaOne, W-CDMA (UMTS), and CDMA2000. So people, watch the 4G magic soon.
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