Methods for adapting density of demodulation reference signals
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsLars Lindbom, Mattias Frenne, Martin Hessler, Karl Werner
Life of this patent
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Abstract
According to an aspect, a wireless node selects a set of reference signal antenna ports for use in transmitting data to other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use and that include reference signal antenna ports having different reference signal densities in the frequency and/or time dimension. The wireless node sends a message to a second wireless node indicating a reference signal assignment and including an indication of the selected set of reference signal antenna ports.
Claims28
A method, in a first wireless node, the method comprising:
- selecting a set of reference signal antenna ports for use in transmitting data to or receiving data from one or more other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use, wherein the plurality of sets of reference signal antenna ports include reference signal antenna ports having different reference signal densities in the frequency dimension, the time dimension, or both;
- and
- sending, to a second wireless node, signaling that indicates a reference signal assignment to the second wireless node, wherein the signaling includes a first part comprising an indication of how the assigned reference signal is densified and further includes a second part comprising an indication of the selected set of reference signal antenna ports.
A first wireless node configured for operation in a wireless communication network, wherein the first wireless node comprises:
- a transceiver circuit;
- and
- a processing circuit operatively coupled to the transceiver circuit, wherein the processing circuit is configured to:
- select a set of reference signal antenna ports for use in transmitting data to or receiving data from one or more other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use, where the plurality of sets of reference signal antenna ports include reference signal antenna ports having different reference signal densities in the frequency dimension and/or time dimension, and
- send signaling to a second wireless node, via the transceiver circuit, the signaling indicating a reference signal assignment to the second wireless node, where the signaling includes a first part comprising an indication of how the assigned reference signal is densified and further includes a second part comprising an indication of the selected set of reference signal antenna ports.
A method, in a second wireless node, the method comprising:
- receiving, from a first wireless node, signaling that indicates a reference signal assignment to the second wireless node, wherein the signaling includes a first part comprising an indication of how the assigned reference signal is densified and further includes a second part comprising an indication of a set of reference signal antenna ports selected from a plurality of available sets of reference signal antenna ports known to the second wireless node, and wherein the plurality of sets of reference signal antenna ports include reference signal antenna ports having different reference signal densities in the frequency dimension, the time dimension, or both;
- and
- identifying the indicated set of reference signal antenna ports from the received indication.
A second wireless node configured for operation in a wireless communication network, wherein the second wireless node comprises:
- a transceiver circuit;
- and
- a processing circuit operatively coupled to the transceiver circuit, wherein the processing circuit is configured to:
- receive from a first wireless node, signaling that indicates a reference signal assignment to the second wireless node, wherein the signaling includes a first part comprising an indication of how the assigned reference signal is densified and further includes a second part comprising an indication of a set of reference signal antenna ports selected from a plurality of available sets of reference signal antenna ports known to the second wireless node, wherein the plurality of sets of reference signal antenna ports include reference signal antenna ports having different reference signal densities in the frequency dimension and/or time dimension, and
- identify the indicated set of reference signal antenna ports from the received indication.
Dependencies are inferred from the claim text.