Predictive channel estimation for low latency receiver

Software for use in implementing a base station to provide wireless service, the software comprising program instructions embodied on a non-transitory storage medium from which at least one programmable device reads at least some of the program instructions for execution thereby, wherein the program instructions are configured to implement an uplink receiver chain configured to process a plurality of uplink symbols for a slot, wherein the plurality of uplink symbols for said slot include one or more early data symbols of said slot, wherein the program instructions are further configured to cause the at least one programmable device to do the following:

• receive first baseband IQ data and second baseband IQ data for said slot;
• determine predicted data for said one or more early data symbols of said slot based on the first baseband IQ data received for said slot, the predicted data for said one or more early data symbols of said slot comprising a predicted version of data used at some point in performing a first portion of uplink receive processing for said one or more early data symbols of said slot;
• perform the first portion of the uplink receive processing for said one or more early data symbols of said slot using the predicted data in order to produce preliminary output data for said one or more early data symbols of said slot;
• determine actual data corresponding to the predicted data, the actual data determined based on at least the second baseband IQ data received for said slot;
• and
• in connection with performing a remaining portion of the uplink receive processing for said one or more first uplink symbols, adapt the preliminary output data for said one or more early data symbols of said slot based on the actual data.

A base station to provide wireless service, the base station comprising:

• at least one remote unit (RU) comprising at least one antenna;
• and
• at least one distributed unit (DU) comprising:
• a network interface to communicatively couple the DU to the RU;
• and
• an uplink receiver chain configured to process a plurality of uplink symbols for a slot, the plurality of uplink symbols for said slot including one or more early data symbols of said slot;
• wherein the DU is configured to do the following:
• receive first baseband IQ data and second baseband IQ data for said slot;
• determine predicted data for said one or more early data symbols of said slot based on the first baseband IQ data received for said slot, the predicted data for said one or more early data symbols of said slot comprising a predicted version of data used at some point in performing a first portion of uplink receive processing for said one or more early data symbols of said slot;
• perform the first portion of the uplink receive processing for said one or more early data symbols of said slot using the predicted data in order to produce preliminary output data for said one or more early data symbols of said slot;
• determine actual data corresponding to the predicted data, the actual data determined based on at least the second baseband IQ data received for said slot;
• and
• in connection with performing a remaining portion of the uplink receive processing for said one or more first uplink symbols, adapt the preliminary output data for said one or more early data symbols of said slot based on the actual data.

A method of uplink receive processing of a plurality of uplink symbols for a slot, the plurality of uplink symbols for said slot including one or more early data symbols of said slot, the method comprising:

• receiving first baseband IQ data and second baseband IQ data for said slot;
• determining predicted data for said one or more early data symbols of said slot based on the first baseband IQ data received for said slot, the predicted data for said one or more early data symbols of said slot comprising a predicted version of data used at some point in performing a first portion of uplink receive processing for said one or more early data symbols of said slot;
• determining predicted data for performing a first portion of uplink receive processing for one or more uplink symbols of said slot, wherein the predicted data for said one or more early data symbols of said slot is determined based on the first baseband IQ data received for said slot;
• performing the first portion of the uplink receive processing for said one or more early data symbols of said slot using the predicted data in order to produce preliminary output data for said one or more early data symbols of said slot;
• determining actual data corresponding to the predicted data, the actual data determined based on at least the second baseband IQ data received for said slot;
• and
• in connection with performing a remaining portion of the uplink receive processing for said one or more first uplink symbols, adapting the preliminary output data for said one or more early data symbols of said slot based on the actual data.