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National Gazette No. 42829, 08 November 2019, Vol 653, Page 116
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116 of 280
Gazette
National Gazettes
, No
42829
, from 08 November, 2019
Department
ICASA
Notice
Page No. 52 of 209,
Notice No. 600,
Electronic Communications Act (36/2005), as amended » Notice regarding the Final International Mobile Telecommunications (IMT) Roadmap 2019
Preview / 116 of 280
116 No. 42829 GOVERNMENT GAZETTE, 8 NOVEMBER 2019 IMT and Long-Term Evolution (LTE) The number of IMT frequency bands has increased significantly in the last several years with the progress of the ITU’s IMT spectrum planning. The potential IMT technologies are LTE, LTE-advanced and WiMAX, with a clear trend towards LTE both from the point of view of the available ecosystem and the choices made by operators. LTE - paired and unpaired spectrum (FDD and TDD) 22 FDD and TDD trends In the past, the majority of bands were assigned to FDD, with limited TDD spectrum in between the FDD assigned sub-bands or in higher ranges. Recently, the amount of spectrum assigned for TDD has increased, however, on the whole, there is still a gap between TDD and FDD, and there is still relatively little spectrum for TDD in lower frequency bands. A key requirement for the future is for chipsets and terminals to support multi-band frequencies to meet the requirements of global frequency distribution. At the same time, to achieve economies of scale and global roaming, it will also be required for terminals to support multi-mode, especially LTE FDD and TDD. The technologies for LTE TDD multi-mode, multi-band Smart phones and multi-band LTE TDD dongles and CPEs are maturing and increasingly becoming commercially available. The majority of assigned spectrum is paired FDD leading to the establishment of a complete and end-to-end industry chain involving widespread participation of global industries and highly matured products including system equipment, chipsets, user devices and test instruments. Currently 288 FDD networks are in commercial operation worldwide, (as compared with 36 TDD networks, although both are steadily increasing). However, LTE TDD is already a mainstream technology supported by a well-established and fast- growing ecosystem. The number of operators deploying commercial LTE TDD systems, or engaged in trials and studies, is steadily increasing. For example, China Mobile is building the world’s largest LTE TDD network. While a large amount of low and medium frequency spectrum (generally suitable for wide coverage) has been allocated for FDD, the same cannot be said for TDD. There is a general trend for higher downlink provision; therefore, the high downlink capacity densities which can be achieved by the larger downlink bandwidth available via TDD bandwidth, favour schemes at higher frequencies 22 The majority of the information included in this section originates from GSA published documentation Page 52 of 205
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