Technique for configuring a phase tracking reference signal
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsVicent Molés Cases, Mattias Frenne
Life of this patent
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Abstract
A technique for transmitting and receiving a configuration message for a phase tracking reference signal, PT-RS, on a radio channel between a radio access node and a radio device is described. The radio channel comprises a plurality of subcarriers in a physical resource block, PRB. A subset of the subcarriers in the PRB is allocated to a demodulation reference signal, DM-RS. As to a method aspect of the technique, the configuration message is transmitted to the radio device. The configuration message comprises a bit field that is indicative of at least one subcarrier allocated to the PT-RS among the subset of subcarriers allocated to the DM-RS.
Claims16
A radio access node comprising:
- at least one processor and a memory, said memory comprising instructions executable by said at least one processor, whereby the radio access node is configured to:
- transmit, to a user equipment, a configuration message for configuring a phase tracking reference signal (PT-RS) on a radio channel, wherein the radio channel comprises a plurality of subcarriers in a physical resource block (PRB), wherein a subset of the subcarriers in the PRB is allocated for reception of a demodulation reference signal (DM-RS) transmitted through a DM-RS port of the user equipment, wherein the configuration message comprises a bit field, wherein the bit field comprises n bits that are indicative of at least one subcarrier allocated for reception of the PT-RS transmitted through the DM-RS port among the subset of subcarriers allocated for reception of a DM-RS transmitted through the DM-RS port, and wherein a number of the plurality of subcarriers in the PRB is greater than 2n;
- and
- receive, from the user equipment, the PT-RS on the at least one subcarrier that is allocated for reception of the PT-RS according to the bit field among the subset of subcarriers allocated for reception of the DM-RS transmitted through the DM-RS port.
A user equipment comprising:
- at least one processor and a memory, said memory comprising instructions executable by said at least one processor, whereby the user equipment is configured to:
- receive, from a radio access node, a configuration message for configuring a phase tracking reference signal (PT-RS) on a radio channel, the radio channel comprising a plurality of subcarriers in a physical resource block (PRB), wherein a subset of the subcarriers in the PRB is allocated for transmission of a demodulation reference signal (DM-RS) through a DM-RS port of the user equipment, wherein the configuration message comprises a bit field comprising n bits that are indicative of at least one subcarrier allocated for transmission of the PT-RS through the DM-RS port among the subset of subcarriers allocated for transmission of the DM-RS through the DM-RS port, and wherein a number of the plurality of subcarriers in the PRB is greater than 2n, and
- transmit, to the radio access node, the PT-RS on the at least one subcarrier that is allocated for transmission of the PT-RS according to the configuration message from among the subset of subcarriers allocated for transmission of the DM-RS for the DM-RS port.
A method performed by a user equipment, the comprising:
- receiving, from a radio access node, a configuration message for configuring a phase tracking reference signal (PT-RS) on a radio channel that comprises a plurality of subcarriers in a physical resource block (PRB), wherein the configuration message comprises a bit field, wherein the bit field is indicative of at least one subcarrier allocated for transmission of the PT-RS through a demodulation reference signal (DM-RS) port among a subset of subcarriers allocated for transmission of the DM-RS through the DM-RS port, wherein the subset of subcarriers allocated for transmission of the DM-RS through the DM-RS port includes fewer subcarriers than a number of subcarriers in the PRB;
- and
- transmit, to the radio access node, the PT-RS on the at least one subcarrier that is allocated for transmission of the PT-RS according to the configuration message from among the subset of subcarriers allocated for transmission of the DM-RS for the DM-RS port.
Dependencies are inferred from the claim text.