Apparatus and method for a mobile telecommunications system
An apparatus comprising circuitry configured to perform a transport channel processing chain, the transport channel processing chain comprising a sub-carrier puncturing function, the sub-carrier puncturing function comprising puncturing, in each subframe of a composite transmission time interval, a set of sub-carriers from at least one mapped physical resource block.
1. An apparatus including a processor and a memory, the processor and the memory being configured to:
perform a transport channel processing chain, the transport channel processing chain comprising a sub-carrier puncturing function, the sub-carrier puncturing function being configured to puncture, in each subframe of a composite transmission time interval, a set of subcarriers from at least one mapped physical resource block, and
puncture the set of subcarriers so that sets of subcarriers that are punctured are different between subframes of the composite transmission time interval, wherein each subframe of the composite transmission time interval is a physical uplink shared channel transmission,
wherein the transport channel processing comprises rearranging, in the frequency domain, the subcarriers that remain from each different subframe after puncturing to occupy the same frequency resources, and repeating resource elements of the rearranged subcarriers in other subcarriers of a sub-physical resource block (PRB) waveform in the same subframe, and
perform low Peak-to-Average Power Ratio uplink transmission based on the repetition of resource elements in other subcarriers of a sub-physical resource block (PRB) waveform in the same subframe.
2. The apparatus of claim 1 , wherein the transport channel processing chain is based on a composite transmission time interval that comprises two or more subframes.
3. The apparatus of claim 1 , wherein the transport channel processing comprises mapping, in each subframe of a composite transmission time interval, a transport block to an integer number of physical resource blocks in a single subframe.
4. The apparatus of claim 1 , wherein the processor and the memory are further configured to transmit a 3 subcarrier sub-PRB transmission or a 6 subcarrier sub-PRB transmission.
5. The apparatus of claim 1 , wherein the composite transmission time interval comprises a fixed predefined number of subframes and the base number of physical resource blocks is changed depending on the number of sub-carriers to be used in a sub-PRB transmission.
6. The apparatus of claim 1 , wherein the base number of physical resource blocks is fixed to a predefined number and the composite transmission time interval is adapted to the number of sub-carriers used in the sub-PRB transmission.
7. The apparatus of claim 1 , wherein the processor and the memory are further configured to receive downlink control channel information signaling indicating parameters of the sub-PRB allocation.
8. The apparatus of claim 1 , wherein the processor and the memory are further configured to map a transport block to a single subcarrier per subframe, and wherein the transport channel processing chain comprises repeating the resource elements of each subframe of the single carrier in other subcarriers in the same OFDM symbol of each subframe.
9. The apparatus of claim 1 , wherein the processor and the memory are further configured to transmit the individual subcarriers with different powers.
10. The apparatus of claim 1 , wherein the transport channel processing chain comprises multiplexing of reference signals into a single subcarrier.
11. The apparatus of claim 1 , wherein the transport channel processing chain is a Physical Uplink Shared Channel resources transport channel processing chain.
12. An apparatus including a processor and a memory, the processor and the memory being configured to:
receive sets of a predefined number of subcarriers in each subframe and consider the remaining subcarriers as being punctured, wherein the sets of subcarriers that are punctured are different between subframes of a composite transmission time interval, wherein the subcarriers that remain from each different subframe after puncturing are rearranged in a frequency domain to occupy the same frequency resources, wherein resource elements of the rearranged subcarriers are repeated in other subcarriers of a sub-physical resource block (PRB) waveform in the same subframe, wherein low Peak-to-Average Power Ratio uplink transmission is performed based on the repetition of resource elements in other subcarriers of a sub-physical resource block (PRB) waveform in the same subframe, and
receive an indication of a UE's uplink transmission preferences to the network via higher layer signaling, wherein each subframe of the composite transmission time interval is a physical uplink shared channel transmission.
13. The apparatus of claim 12 , wherein the circuitry is configured to transmit an indication of the use of Peak-to-Average Power Ratio uplink transmission to the user equipment via higher layer signaling.
14. The apparatus of claim 13 , wherein the apparatus is a base station that transmits higher layer signaling to a user equipment.
15. The apparatus of claim 12 , wherein the apparatus is a base station that receives higher layer signaling from a UE.
16. A method, comprising:
performing a transport channel processing chain, the transport channel processing chain comprising a sub-carrier puncturing function, the sub-carrier puncturing function being configured to puncture, in each OFDM symbol of each subframe of a composite transmission time interval, a set of subcarriers from at least one mapped physical resource block,
puncturing the set of subcarriers so that sets of subcarriers that are punctured are different between subframes of the composite transmission time interval, wherein each subframe of the composite transmission time interval is a physical uplink shared channel transmission,
wherein the transport channel processing comprises rearranging, in the frequency domain, the subcarriers that remain from each different subframe after puncturing to occupy the same frequency resources, and repeating resource elements of the rearranged subcarriers in other subcarriers of a sub-physical resource block (PRB) waveform in the same subframe; and
performing low Peak-to-Average Power Ratio uplink transmission based on the repetition of resource elements in other subcarriers of a sub-physical resource block (PRB) waveform in the same subframe.