Determining reference signal locations
AssigneeMotorola Mobility LLC
InventorsHossein Bagheri, Ravikiran Nory, Vijay Nangia
Life of this patent
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Abstract
For determining reference signal locations, a method determines a number of Transmission Time Intervals (TTI) in a scheduled transmission of a plurality of TTI. The method further determines one or more reference signal locations based on the number of TTI and one or more of a parameter received from a higher layer wherein the higher layer is higher than a physical layer, a subframe index, a subband size, and a Time Division Duplex (TDD) configuration for the scheduled transmission.
Claims20
A method comprising:
- determining, by use of a processor, a periodic set of transmission time intervals (TTI);
- receiving a resource assignment indication corresponding to the periodic set of TTIs, the resource assignment indication indicating a demodulation reference symbol (DMRS) pattern for the periodic set of TTIs;
- and
- determining DMRS symbols associated with the periodic set of TTIs from a lookup table based on the indicated DMRS pattern, and a time interval between two TTIs of the periodic set of TTIs, and a TTI index of the periodic set of TTIs, wherein the periodic set of TTIs comprises a first and a second subset of TTIs, wherein the first subset and the second subset of TTIs belong to a subframe, and a first TTI and a third TTI of the first subset of TTIs contain DMRS symbols, and a second TTI and a fourth TTI of the second subset do not contain DMRS symbols.
An apparatus comprising:
- a processor performing:
- determining a periodic set of transmission time intervals (TTI);
- receiving a resource assignment indication corresponding to the periodic set of TTIs, the resource assignment indication indicating a demodulation reference symbol (DMRS) pattern for the periodic set of TTIs;
- and
- determining DMRS symbols associated with the periodic set of TTIs from a lookup table based on the indicated DMRS pattern, and a time interval between two TTIs of the periodic set of TTIs, and a TTI index of the periodic set of TTIs, wherein the periodic set of TTIs comprises a first and a second subset of TTIs, wherein the first subset and the second subset of TTIs belong to a subframe, and a first TTI and a third TTI of the first subset of TTIs contain DMRS symbols, and a second TTI and a fourth TTI of the second subset do not contain DMRS symbols.
A program product comprising a non-transitory computer readable storage medium and stores code executable by a processor to perform:
- determining a periodic set of transmission time intervals (TTI);
- receiving a resource assignment indication corresponding to the periodic set of TTIs, the resource assignment indication indicating a demodulation reference symbol (DMRS) pattern for the periodic set of TTIs;
- and
- determining DMRS symbols associated with the periodic set of TTIs from a lookup table based on the indicated DMRS pattern, and a time interval between two TTIs of the periodic set of TTIs, and a TTI index of the periodic set of TTIs, wherein the periodic set of TTIs comprises a first and a second subset of TTIs, wherein the first subset and the second subset of TTIs belong to a subframe, and a first TTI and a third TTI of the first subset of TTIs contain DMRS symbols, and a second TTI and a fourth TTI of the second subset do not contain DMRS symbols.
Dependencies are inferred from the claim text.