Microcell

A microcell is a cell in a mobile phone network served by a low power cellular base station (tower), covering a limited area such as a mall, a hotel, or a transportation hub. A microcell is usually larger than a picocell, though the distinction is not always clear. A microcell uses power control to limit the radius of its coverage area.

Typically the range of a microcell is less than two kilometers wide, a picocell is 200 meters or less, and a femtocell is on the order of 10 meters,[1] although AT&T calls its product, with a range of 40 feet (12 m), a "microcell".[2]

A micro cellular network is a radio network composed of microcells.

Contents

Rationale

Like picocells, microcells are usually used to add network capacity in areas with very dense phone usage, such as train stations. Microcells are often deployed temporarily during sporting events and other occasions in which extra capacity is known to be needed at a specific location in advance.

Cell size flexibility is a feature of 2G (and later) networks and is a significant part of how such networks have been able to improve capacity. Power controls implemented on digital networks make it easier to prevent interference from nearby cells using the same frequencies. By subdividing cells, and creating more cells to help serve high density areas, a cellular network operator can optimize the use of spectrum and ensure capacity can grow. By comparison, older analog systems have fixed limits beyond which attempts to subdivide cells simply would result in an unacceptable level of interference.

Microcell/picocell-only networks

Certain mobile phone systems, notably PHS and DECT, only provide microcellular (and picocellular) coverage. Microcellular systems are typically used to provide low cost mobile phone systems in high-density environments such as large cities. PHS is deployed throughout major cities in Japan as an alternative to ordinary cellular service. DECT is used by many businesses to deploy private license-free microcellular networks within large campuses where wireline phone service is less useful. DECT is also used as a private, non-networked, cordless phone system where its low power profile ensures that nearby DECT systems do not interfere with each other.

A forerunner of these types of network was the CT2 cordless phone system, which provided access to a looser network (without handover), again with base stations deployed in areas where large numbers of people might need to make calls. CT2's limitations ensured the concept never took off. CT2's successor, DECT, was provided with an interworking profile, GIP so that GSM networks could make use of it for microcellular access, but in practice the success of GSM within Europe, and the ability of GSM to support microcells without using alternative technologies, meant GIP was rarely used, and DECT's use in general was limited to non-GSM private networks, including use as cordless phone systems.

See also

External links

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • microcell — microcell. См. микроклетка. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • microcell — mikrocelė statusas T sritis chemija apibrėžtis Lokalinis elektrocheminis elementas, susidaręs metalo paviršiuje. atitikmenys: angl. microcell rus. микроэлемент; микроячейка …   Chemijos terminų aiškinamasis žodynas

  • microcell — mikrocelė statusas T sritis chemija apibrėžtis Mažas matavimo indelis. atitikmenys: angl. microcell rus. микроэлемент; микроячейка …   Chemijos terminų aiškinamasis žodynas

  • microcell — noun a) A simple cell consisting of a nucleus and protoplasm within a membrane b) A small, local cell in a mobile phone network …   Wiktionary

  • microcell —    Antennas with limited coverage ranges, located in interior spaces and linked to a standard cell site …   IT glossary of terms, acronyms and abbreviations

  • Microcell-mediated chromosome transfer — (or MMCT) is a technique used in cell biology and genetics to transfer a chromosome from a defined donor cell line into a recipient cell line. MMCT has been in use since the 1970s and has contributed to a multitude of discoveries including tumor …   Wikipedia

  • микроклетка — microcell микроклетка. Искусственно индуцированная мембранная структура, включающая отдельные хромосомы нормальной клетки, используются для последующего слияния с реципиентными клетками др. организмов. (Источник: «Англо русский толковый словарь… …   Молекулярная биология и генетика. Толковый словарь.

  • MICT — Microcell Telecommunications, Inc. (Business » NASDAQ Symbols) …   Abbreviations dictionary

  • Fido Solutions — Giving low prices a good home. Industry Wireless services Founded December 1996 Key people Fadel Chbihna General Manager for Fido …   Wikipedia

  • Macrocell — A macrocell is a cell in a mobile phone network that provides radio coverage served by a power cellular base station (tower). Generally, macrocells provide coverage larger than microcell such as rural areas or along highways. The antennas for… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.