Base station signaling for enhanced channel estimation for new radio coverage

A wireless node, comprising:

• a radio;
• and
• a processor operably coupled to the radio;
• wherein the processor is configured to, when executing instructions stored in memory, cause the wireless node to:
• transmit, to a wireless device, an indication of a physical uplink channel configuration for transmitting a physical uplink channel transmission including a demodulation reference signal (DMRS) schedule;
• receive, from the wireless device, an indication that the wireless device supports bundling DMRS signals across multiple slots and an indication that the wireless device supports dynamic DMRS reconfiguration;
• transmit, to the wireless device, a DMRS configuration, wherein the DMRS configuration includes a channel estimation bundle window indicating that channel estimation may be performed across multiple slots, and wherein the DMRS configuration further indicates a number of DMRS signals to transmit in at least one of the multiple slots of the channel estimation bundle window;
• receive a set of DMRS signals based on the DMRS configuration and within the channel estimation bundle window, wherein a first DMRS signal of the set of DMRS signals is received in a first slot, and wherein a second DMRS signal of the set of DMRS signals is received in a second slot;
• estimate a radio channel based on the first DMRS signal and the second DMRS signal;
• decode a transmission from the wireless device based on the estimated radio channel;
• and
• transmit, to the wireless device, a DMRS reconfiguration indication, the DMRS reconfiguration indication changing the number of DMRS signals to transmit in at least one of the multiple slots of the channel estimation bundle window.

An integrated circuit, comprising circuitry configured to cause a wireless node to:

• transmit, to a wireless device, an indication of a physical downlink channel configuration for receiving a physical downlink channel transmission, the physical downlink channel transmission including a demodulation reference signal (DMRS);
• receive, from the wireless device, an indication that the wireless device supports bundling DMRS signals across multiple slots and an indication that the wireless device supports dynamic DMRS reconfiguration;
• transmit, to the wireless device, a DMRS configuration, wherein the DMRS configuration includes a channel estimation bundle window indicating that channel estimation may be performed across multiple slots, and wherein the DMRS configuration further indicates a number of DMRS signals to transmit in at least one of the multiple slots of the channel estimation bundle window;
• transmit, based on the DMRS configuration, a set of DMRS signals in the channel estimation bundle window, wherein a first DMRS signal of the set of DMRS signals is transmitted in a first slot, and wherein a second DMRS signal of the set of DMRS signals is transmitted in a second slot, and wherein the first DMRS signal and the second DMRS signal are configured for use by the wireless device to estimate a radio channel based on the first DMRS signal and the second DMRS signal, and
• transmit a DMRS reconfiguration indication, the DMRS reconfiguration indication changing the number of DMRS signals to transmit in at least one of the multiple slots of the channel estimation bundle window.