Enhanced PTRS to DMRS Port Mapping for Multi-Codeword and Multi-Panel Transmission
OwnerSven Jacobsson, Andreas Nilssoninventors
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Abstract
The present disclosure describes several methods on how to perform an overhead-efficient indication of a phase tracking reference signals (PTRS) to demodulation reference signals (DMRS) mapping for user equipment (UEs) (20, 100) with up to 8 layers, up to 4 PTRS ports, up to 4 simultaneously transmitting UE panels, and up to 4 uplink (UL) codewords, up to 8 layers per UE panel (110), which can reduce the downlink control information (DCI) overhead for UL communication.
Claims27
-72. (canceled)
A method of transmitting a phase tracking reference signal (PTRS) using multi-layer transmission on an uplink, the method implemented by a wireless device in a wireless communication system, the method comprising:
- receiving a message containing a mapping parameter having a value indicative of one of a plurality of entries in a mapping table, wherein each entry in the mapping table is associated with at least one of one or more codewords used for uplink transmission of reference signals;
- allocating one or more PTRS ports to respective uplink layers based on the indicated entry in the mapping table;
- and
- transmitting the PTRS over the one or more allocated PTRS ports.
A method of receiving a phase tracking reference signal (PTRS) using multi-layer transmission on an uplink, the method implemented by a network node in a wireless communication system, the method comprising:
- sending, to a user equipment (UE), a message containing a mapping parameter having a value indicative of one of a plurality of entries in a mapping table, wherein each entry is associated with at least one of one or more codewords used for uplink transmission of reference signals and indicates an allocation of one or more PTRS ports to respective uplink layers;
- and
- receiving the PTRS over the one or more allocated PTRS ports.
A wireless device in a wireless communication system using multi-layer transmission on an uplink and configured to transmit a phase tracking reference signal (PTRS), the wireless device comprising:
- communication circuitry for communicating with a network node;
- and
- processing circuitry configured to:
- receive a message containing a mapping parameter having a value indicative of one of a plurality of entries in a mapping table, wherein each entry in the mapping table is associated with at least one of a plurality of codewords used for uplink transmission of reference signals;
- allocate one or more PTRS ports to respective uplink layers based on the indicated entry in the mapping table;
- and
- transmit the PTRS over the one or more allocated PTRS ports.
A network node in a wireless communication system using multi-layer transmission on an uplink and configured to receive a phase tracking reference signal (PTRS) from a user equipment (UE), the network node comprising:
- communication circuitry for communicating with the UE;
- and
- processing circuitry configured to:
- send, to the UE, a message containing a mapping parameter having a value indicative of one of a plurality of entries in a mapping table, wherein each entry is associated with at least one of a plurality of codewords used for uplink transmission of reference signals and indicates an allocation of one or more PTRS ports to respective uplink layers;
- and
- receive the PTRS over the one or more allocated PTRS ports.
Dependencies are inferred from the claim text.