Qualcomm: LTE-TDD cover 80% smaller than LTE-FDD

Recently, the United States Qualcomm released a report, LTE tdd–the Global Solution for unpaired Spectrum modified 2011. The report argues that TDD can provide better downlink data service capabilities, while the FDD provides better coverage, with the same frequency under the same power conditions, LTE-TDD coverage than LTE-FDD small 80% (dl/ul=2:1)/small costs (dl/ul=1:1). This can lead to huge spending on mobile capital and poor user perceptions. In the 3G era of the main push TD standard Mobile, into the 4G era also lacks the core competitiveness.　　The industry has speculated that Qualcomm's report originated in the dispute between TDD LTE in India and FDD LTE. LTE, TD-SCDMA long Term Evolution, refers to the long-term evolution of TD-SCDMA. LTE is the TDD version of LTE technology, Fddlte Technology is the FDD version of the LTE technology. The difference between TDD and FDD is that TD uses the asymmetric frequency of time for duplex, and FDD is a pair of frequencies for duplex.　　TD-SCDMA is a CDMA technology, LTE is an OFDM technology, and can not be docked to each other. LTE, as an important opportunity in the period of communication industry transformation, contains three main features: 1. China-led, with a large number of Chinese patents, at the same time received wide international support and became an international standard; 2.　　Internet speed, can achieve TD-SCDMA technology dozens of times times, so that ubiquitous high-speed Internet becomes possible; 3, the rapid development of industry, and other international mobile broadband technology has basically achieved synchronous development, representing the world's mobile communications industry's most advanced level. LTE is the successor technology of 3G Standard TD-SCDMA, which has core independent intellectual property rights, and is a wireless communication standard designed for mobile high bandwidth applications. Under the leadership of the government, China Mobile is fully promoting the innovation, industrialization and internationalization of LTE. From the existing public data, China Mobile has signed a LTE cooperation agreement with 9 operators to promote the global or imminent completion of 26 LTE test network, and according to market forecasts, in 2011 more than 10 countries and regions began to LTE commercial deployment.　　Especially in the Indian market, more and more operators are beginning to LTE. There has been some controversy over TDD LTE and FDD LTE in the Indian market, but for now the recognition of TDD LTE is significantly higher than FDD LTE. India's reliance Industry, Aircel and Qualcomm have all tended to LTE.　　LTE is now in the Indian market. Currently, three companies in India have made clear their support for LTE. Reliance industry promises to adopt LTETechnology and announced plans to invest $1.5 billion in 3 years to deploy 15,000 LTE base stations. This January, the reliance industry selected its LTE network construction partners. Ericsson, Alcatel-Lucent and Huawei are all taking part in the testing of their LTE equipment.　　At the same time, another operator, Aircel, is also conducting network testing with device manufacturers, and has successfully conducted LTE demonstrations with NSN in India. Qualcomm, while not proposing a specific LTE network construction plan, and intends to sell the newly established LTE joint venture, but the company has made it clear that the company in India to buy broadband spectrum is to ensure the adoption of LTE technology, the company does not plan to operate the network, Nor is it intended to compete with other partners.　　The company is currently negotiating with Indian operators on issues such as the commercialization of LTE TDD and the Qualcomm BWA Spectrum license. Previously, in the Indian 2.3GHz BWA license Auction process, Qualcomm access to 4 regions of the spectrum.　　Qualcomm is currently negotiating with Indian operators on the commercialization of LTE TDD. China Mobile Communication Research Institute Dragon Crape Myrtle in the "LTE TDD and LTE FDD technology comparison," the article pointed out that, the LTE system simultaneously defines the frequency division duplex (FDD) and the time Division Duplex (TDD) Two kinds of ways, but because of the wireless technology difference, the use frequency band difference as well as each manufacturer's benefit and so on factor, The LTEFDD support Camp is stronger, and standardization and industrial development are all ahead of LTE TDD. (Mory)