Signal design associated with concurrent delivery of energy and information
A base transmission signal and an auxiliary transmission signal may be used to (e.g., concurrently) improve a harvesting efficiency of an energy receiver while maintaining a prespecified performance level of an information receiver. An auxiliary transmission signal may be constructed. The construction of the auxiliary transmission signal may be signaled. An auxiliary transmission signal may be adapted. The adaptation of the auxiliary transmission signal may be signaled. An impact of auxiliary transmission signals on an information receiver's performance may be mitigated. One or more narrowband energy harvesting (EH) signals may be used, for example to provide a high peak to average power ratio (PARR) for EH devices (e.g., without significantly impacting overall transmitted signal PARR) characteristics. One or more narrowband auxiliary signals may be used, for example to enhance the PARR characteristics of an information signal sub-band.
1. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to:
receive an auxiliary signal codebook;
receive an indication from a network via a downlink control information (DCI), wherein the indication indicates an index that identifies a sub-band associated with an auxiliary signal and a time duration associated with the sub-band;
identify the auxiliary signal based on the auxiliary signal codebook and the indication; and
perform a cancelation associated with the identified auxiliary signal and decode a base information signal.
2. The WTRU of claim 1 , wherein the auxiliary signal codebook is received from the network.
3. The WTRU of claim 1 , wherein the auxiliary signal codebook is preconfigured in the WTRU.
4. The WTRU of claim 1 , wherein a peak-to-average power ratio (PAPR) of the auxiliary signal is higher than a PAPR of the base information signal.
5. The WTRU of claim 1 , wherein the indication further indicates a parameter associated with the auxiliary signal.
6. The WTRU of claim 5 , wherein the parameter associated with the auxiliary signal comprises a sequence type of the auxiliary signal.
7. The WTRU of claim 1 , wherein the auxiliary signal comprises one or more sub-carriers or resource blocks (RBs) that span a subset of resources allocated for the WTRU.
8. The WTRU of claim 1 , wherein the cancelation associated with the identified auxiliary signal is a cancelation of the identified auxiliary signal.
9. The WTRU of claim 1 , wherein the cancelation associated with the identified auxiliary signal is a cancelation of the identified auxiliary signal in an interfering region.
10. A method implemented in a wireless transmit/receive unit (WTRU), the method comprising:
receiving an auxiliary signal codebook;
receiving an indication from a network via a downlink control information (DCI), wherein the indication indicates an index that identifies a sub-band associated with an auxiliary signal and a time duration associated with the sub-band;
identifying the auxiliary signal based on the auxiliary signal codebook and the indication; and
performing a cancelation associated with the identified auxiliary signal and decoding a base information signal.
11. The method of claim 10 , wherein the auxiliary signal codebook is received from the network.
12. The method of claim 10 , wherein the auxiliary signal codebook is preconfigured in the WTRU.
13. The method of claim 10 , wherein the indication further indicates a parameter associated with the auxiliary signal, and wherein the parameter associated with the auxiliary signal comprises a sequence type of the auxiliary signal.
14. The method of claim 10 , wherein the cancelation associated with the identified auxiliary signal is a cancelation of the identified auxiliary signal.
15. The method of claim 10 , wherein the cancelation associated with the identified auxiliary signal is a cancelation of the identified auxiliary signal in an interfering region.