Timing And Frequency Compensation In Non-Terrestrial Network Communications
AssigneeMediaTek Singapore Pte. Ltd.
InventorsAbdelkader Medles, Gilles Charbit
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Abstract
Various solutions for timing and frequency compensation in non-terrestrial network (NTN) communications are proposed. An apparatus implemented in a user equipment (UE) obtains a carrier frequency of an NTN. The apparatus generates an up-conversion signal by upconverting a baseband signal according to the carrier frequency. Then, the apparatus further obtains a pre-compensation frequency value. The apparatus performs an uplink (UL) frequency pre-compensation through adjusting a phase of the up-conversion signal according to the pre-compensation frequency value.
Claims20
A method, comprising:
- obtaining, by a processor of an apparatus, a carrier frequency of a non-terrestrial network (NTN);
- generating, by the processor, an upconversion signal by upconverting a baseband signal according to the carrier frequency;
- obtaining, by the processor, a pre-compensation frequency value;
- and
- performing, by the processor, an uplink (UL) frequency pre-compensation through adjusting a phase of the upconversion signal according to the pre-compensation frequency value.
The method of claim 19, wherein the pre-compensation frequency value corresponds to a Doppler frequency shift due to a movement of the apparatus.
A method, comprising:
- obtaining, by a processor of an apparatus, a carrier frequency of a non-terrestrial network (NTN);
- generating, by the processor, an upconversion signal by upconverting a baseband signal according to the carrier frequency;
- obtaining, by the processor, a time compression factor of the NTN;
- and
- performing, by the processor, a timing compensation through applying the time compression factor to the upconversion signal.
An apparatus, comprising:
- a transceiver configured to wirelessly communicate with a non-terrestrial network (NTN);
- and
- a processor coupled to the transceiver and configured to perform operations comprising:
- obtaining a carrier frequency of a non-terrestrial network (NTN);
- generating an upconversion signal by upconverting a baseband signal according to the carrier frequency;
- obtaining, via the transceiver, a pre-compensation frequency value;
- and
- performing an uplink (UL) frequency pre-compensation through adjusting a phase of the upconversion signal according to the pre-compensation frequency value.
Dependencies are inferred from the claim text.