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US 12,088,400 B2Granted
Apparatus for doppler shift compensation, corresponding method and computer program
AssigneeNokia Technologies Oy
InventorsJeroen Wigard, István Zsolt Kovács, Daniela Laselva
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Abstract
There is provided an apparatus, said apparatus comprising means for receiving from a network, at a user equipment, Doppler shift information associated with at least one cell of the network as a function of time for at least one area and using the Doppler shift information at the user equipment to compensate for the Doppler shift in communication with the network when the user equipment is in the at least one area.
Claims12
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including computer program code;
- the at least one memory and the computer program code configured to cause the apparatus at least to:
- receive from a network, at a user equipment, Doppler shift information associated with at least one cell of the network as a function of time for at least one area;
- and
- use the Doppler shift information at the user equipment to compensate for the Doppler shift in communication with the network when the user equipment is in the at least one area,
- wherein the at least one processor and the computer program code are further configured to cause the apparatus to:
- receive the Doppler shift information from the network using radio resource control signalling, broadcast signalling, multicast signalling and groupcast signalling, wherein the broadcast signalling is broadcast per the at least one area;
- determine Doppler shift information associated with the at least one cell for the at least one area;
- and
- provide the determined Doppler shift information to the network, and
- wherein the Doppler shift information comprises a set of Doppler compensation parameters comprising a time dependent list of values per area, the parameters comprising the Doppler frequency shift and time offset per candidate cell, wherein the Doppler shift information further comprises an indication of the associated cell, Doppler area and validity, and wherein the Doppler shift information is indicated per area for different UE speed and direction ranges.
10 more elements
An apparatus comprising:
- at least one processor;
- and
- at least one memory including computer program code;
- the at least one memory and the computer program code configured to cause the apparatus at least to:
- determine Doppler shift information associated with at least one cell of a network as a function of time for at least one area;
- and
- provide the Doppler shift information to a user equipment for use in communicating with the network when the user equipment is in the at least one area,
- wherein the at least one processor and the computer program code are further configured to cause the apparatus to:
- determine that the user equipment is in the first area based on global navigation satellite system information and previous Doppler shift information received from the user equipment;
- receive Doppler shift information associated with the at least one cell for the at least one area from the user equipment, the Doppler shift information determined at the user equipment;
- provide the Doppler shift information to the user equipment using radio resource control signalling, broadcast signalling, multicast signalling and groupcast signalling, wherein the broadcast signalling is broadcast per the at least one area;
- wherein the Doppler shift information comprises a set of Doppler compensation parameters comprising a time dependent list of values per area, the parameters comprising the Doppler frequency shift and time offset per candidate cell, wherein the Doppler shift information further comprises an indication of the associated cell, Doppler area and validity, and wherein the Doppler shift information is indicated per area for different UE speed and direction ranges.
9 more elements
A method comprising:
- receiving from a network, at a user equipment, Doppler shift information associated with at least one cell of the network as a function of time for at least one area;
- and
- using the Doppler shift information at the user equipment to compensate for the Doppler shift in communication with the network when the user equipment is in the at least one area,
- wherein the method further comprises:
- receiving the Doppler shift information from the network using radio resource control signalling, broadcast signalling, multicast signalling and groupcast signalling, wherein the broadcast signalling is broadcast per the at least one area;
- determining Doppler shift information associated with the at least one cell for the at least one area;
- and
- providing the determined Doppler shift information to the network,
- wherein the Doppler shift information comprises a set of Doppler compensation parameters comprising a time dependent list of values per area, the parameters comprising the Doppler frequency shift and time offset per candidate cell, wherein the Doppler shift information further comprises an indication of the associated cell, Doppler area and validity, and wherein the Doppler shift information is indicated per area for different UE speed and direction ranges.
6 more elements
Dependencies are inferred from the claim text.