Betekenis van:
uplink

Voorbeeldzinnen

1. Frequencies used for FDD uplink
2. Guard band between FDD uplink band edge and TDD band edge
3. discontinuous transmission [4] shall be activated in the MCV system uplink direction,
4. Guard band between FDD downlink band edge and FDD uplink band edge (duplex gap) [6]
5. In-block requirements — TS BEM in-block emission limit over frequencies of FDD uplink and TDD
6. In 1997 the Government made it possible to uplink regional frequencies in order to obtain higher coverage (network).
7. the transmission and reception of uplink and downlink bit frames over a mobile data link between ground and aircraft communication systems;
8. The lower pair of sub-bands should consist of 1980-1995 MHz for earth to space communications (the uplink) and of 2170-2185 MHz for space to earth communications (the downlink); the upper pair of sub-bands should consist of 1995-2010 MHz for the uplink and of 2185-2200 MHz for the downlink.
9. ‘the 1800 MHz band’ means the 1710-1785 MHz band for uplink (terminal transmit, base station receive) and 1805-1880 MHz band for downlink (base station transmit, terminal receive);
10. ‘the 900 MHz band’ means the 880-915 MHz band for uplink (terminal transmit, base station receive) and 925-960 MHz band for downlink (base station transmit, terminal receive);
11. However, if national circumstances prevent the entire bands from being made available, Member States may make available a smaller amount of spectrum, but should at least make available 2 MHz of spectrum in the uplink direction and 2 MHz of spectrum in the downlink direction, as such an amount of spectrum is considered the minimum required for the operation of MCV services.
12. Commercial operation of MCA services is currently considered only for GSM systems operating in the 1710-1785 MHz band for uplink (terminal transmit and base station receive) and the 1805-1880 MHz band for downlink (base station transmit and terminal receive), in accordance with ETSI standards EN 301 502 and EN 301 511.
13. Such separation should be achieved by either leaving these 5 MHz blocks unused as guard blocks; or through usage that complies with parameters of the restricted BEM when adjacent to an FDD (uplink) or between two TDD blocks; or through usage that complies with parameters of either restricted or unrestricted BEMs when adjacent to an FDD (downlink) block.
14. In accordance with this principle, the two times 30 MHz to be used should be divided into contiguous sub-bands of equal bandwidth for both earth to space communications (the uplink) and space to earth communications (the downlink) in order to allow the most efficient use of the sub-bands.
15. MCV services are currently operated commercially using only the GSM standard and only in bands 880-915 MHz and 1710-1785 MHz for uplink (terminal transmit and base station receive) and 925-960 MHz and 1805-1880 MHz for downlink (base station transmit and terminal receive).