The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP, UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.
Iran's telecommunications industry is almost entirely state-owned, dominated by the Telecommunication Company of Iran (TCI). Fixed-line penetration in 2004 was relatively well-developed by regional standards, standing at 22 lines per 100 people, higher than Egypt with 14 and Saudi Arabia with 15, although behind the UAE with 27. Iran had more than 1 mobile phone per inhabitant by 2012.
China Mobile is the trade name of both China Mobile Limited and its ultimate controlling shareholder, China Mobile Communications Group Co., Ltd., is a Chinese state-owned telecommunications company. It provides mobile voice and multimedia services through its nationwide mobile telecommunications network across mainland China and Hong Kong. China Mobile is the largest wireless carrier in China, with 945.50 million subscribers as of June 2021. China Mobile was ranked #25 in Forbes' Global 2000 in 2023.
China United Network Communications Group Co., Ltd. or China Unicom is a Chinese state-owned telecommunications operator. Started as a wireless paging and GSM mobile operator, it currently provides a range of services including mobile network, long-distance, local calling, data communication, Internet services, and IP telephony. China Unicom is the third-largest wireless carrier in China and the sixth largest mobile provider in the world as of 2022.
SK Telecom Co., Ltd., abbreviated as SKT is a South Korean wireless telecommunications operator and former film distributor and is part of the SK Group, one of the country's largest chaebols. It leads the local market with 50.5 percent share as of 2008. SK Telecom is the largest wireless carrier in South Korea, with 27.019 million subscribers as of Q4 2017.
Swisscom AG is a major telecommunications provider in Switzerland. Its headquarters are located in Worblaufen near Bern. The Swiss government owns 51 percent of Swisscom AG. According to its own published data, Swisscom holds a market share of 56% for mobile, 50% for broadband and 37% for TV telecommunication in Switzerland. Its Italian subsidiary FASTWEB is attributed 16% of private clients and 29% of corporate clients share of Italian broadband and is also active in the mobile market.
ZTE Corporation is a Chinese partially state-owned technology company that specializes in telecommunication. Founded in 1985, ZTE is listed on both the Hong Kong and Shenzhen Stock Exchanges.
The telecommunications industry in China is dominated by three state-run businesses: China Telecom, China Unicom and China Mobile. The three companies were formed by restructuring launched in May 2008, directed by the Ministry of Information Industry (MII), National Development and Reform Commission (NDRC) and the Minister of Finance. Since then, all three companies gained nationwide fixed-line and cellular mobile telecom licenses in China. In 2019, all three telecoms were issued 5G national licenses.
Maroc Telecom is the main telecommunications company in Morocco. Currently employing around 11,178 employees, it is the largest telecommunications network in the country with 8 regional delegations and 220 offices present across Morocco. The company is listed on both the Casablanca Stock Exchange and Euronext Paris.
Telecommunication Company of Iran, or TCI, is the fixed-line incumbent operator in Iran offering services in fixed telephony, DSL and data services for both residential and business customers, all throughout the country. It was established in 1971 with a new organizational structure as the main responsible administration for the entire telecommunication affairs.
Taiwan Star Telecom Corporation Limited, doing business as T Star for short, formerly Vibo Telecom Inc., was a 3G mobile network operator in Taiwan.
UNISOC, formerly Spreadtrum Communications, Inc., is a Chinese fabless semiconductor company headquartered in Shanghai which produces chipsets for mobile phones. UNISOC develops its business in two major fields - consumer electronics and industrial electronics, including smartphones, feature phones, smart audio systems, smart wear and other application fields; Industrial electronics cover the fields such as LAN IoT, WAN IoT and smart display.
In telecommunications, long-term evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA standards. It improves on those standards' capacity and speed by using a different radio interface and core network improvements. LTE is the upgrade path for carriers with both GSM/UMTS networks and CDMA2000 networks. Because LTE frequencies and bands differ from country to country, only multi-band phones can use LTE in all countries where it is supported.
China's mobile phone industry or cell phone industry has high growth rate, raising its share on the global mobile phone market. During 2007, 600 million mobile phones were made in China which accounted for over 25 percent of the global production. China is the largest market in terms of mobile phone subscribers.
3G mobile telephony was relatively slow to be adopted globally. In some instances, 3G networks do not use the same radio frequencies as 2G so mobile operators must build entirely new networks and license entirely new frequencies, especially so to achieve high data transmission rates. Other delays were due to the expenses of upgrading transmission hardware, especially for UMTS, whose deployment required the replacement of most broadcast towers. Due to these issues and difficulties with deployment, many carriers delayed acquisition of these updated capabilities.
Borqs Technologies Inc. is a publicly traded Internet of Things manufacturer.
Dr. Hui Liu is a Chinese American professor and an entrepreneur in the field of wireless and satellite communications. He is a prolific researcher with more than 200 scholarly articles and 2 textbooks, and a creative innovator with 67 awarded patents in areas ranging from wireless systems, signal processing, satellite networks, to machine learning. He has more than 12,000 paper citations and an H-index of 56 as of 2018. Dr. Liu is also one of the principal designers of three industrial standards on cellular networks, terrestrial broadcasting, and satellite communications, respectively.
Airtel India commonly known as Airtel, is the second largest provider of mobile telephony and third largest provider of fixed telephony in India, and is also a provider of broadband and subscription television services. The brand is operated by several subsidiaries of Bharti Airtel, with Bharti Hexacom and Bharti Telemedia providing broadband fixed line services and Bharti Infratel providing telecom passive infrastructure service such as telecom equipment and telecom towers. Currently, Airtel provides 5G, 4G and 4G+ services all over India. Currently offered services include fixed-line broadband, and voice services depending upon the country of operation. Airtel had also rolled out its VoLTE technology across all Indian telecom circles.
Datang Telecom Technology Co., Ltd., known as Datang Telecom or DTT, is a Chinese listed company based in Beijing, China. It is a subsidiary of state-owned "China Academy of Telecommunications Technology" (CATT), which had a trading name Datang Telecom Group.
HKT Limited, also known as Hong Kong Telecom, is one of the largest telecommunications companies in Hong Kong. It has a dominant position in fixed-line, mobile, IDD and broadband services in Hong Kong. HKT Group is a subsidiary of PCCW since 2000, after it was acquired from Cable & Wireless plc.
