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US 11,310,009 B2Granted
Reference signal acquisition
AssigneeQUALCOMM Incorporated
InventorsSumeeth Nagaraja, Tao Luo, Sony Akkarakaran, Alexandros Manolakos
Life of this patent
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Abstract
Various aspects of the disclosure relate to techniques associated with the acquisition of reference signals. In some aspects, a network may request a user equipment (UE) to measure a timing difference between neighbor cells and use that information to generate a CSI-RS configuration. The network sends the CSI-RS configuration to the UE to enable the UE to acquire a CSI-RS from a neighbor cell. In some aspects, a network may send timing-related information to a neighbor cell and the neighbor cell uses that information to transmit a CSI-RS.
Claims14
A method of communication for a base station, comprising:
- determining that a serving cell for a user equipment (UE) is to supply timing for the UE to use to measure a channel state information-reference signal (CSI-RS);
- determining that a neighbor cell of the serving cell is to transmit the CSI-RS;
- determining a timing difference between the serving cell and the neighbor cell;
- as a result of determining that the neighbor cell of the serving cell is to transmit the CSI-RS, sending to the neighbor cell an indication of the timing difference, wherein the timing difference comprises a symbol timing difference;
- generating a CSI-RS configuration for the CSI-RS based on the determining that the serving cell for the UE is to supply the timing for the UE to use to measure the CSI-RS and the determining that the neighbor cell of the serving cell is to transmit the CSI-RS, wherein the CSI-RS configuration comprises an indication that the UE is to use the timing of the serving cell to measure the CSI-RS;
- and
- transmitting the CSI-RS configuration comprising the indication to the UE.
4 more elements
A base station for communication comprising:
- a memory device;
- and
- a processing circuit coupled to the memory device and configured to:
- determine that a serving cell for a user equipment (UE) is to supply timing for the UE to use to measure a channel state information-reference signal (CSI-RS);
- determine that a neighbor cell of the serving cell is to transmit the CSI-RS;
- determine a timing difference between the serving cell and the neighbor cell;
- as a result of determining that the neighbor cell of the serving cell is to transmit the CSI-RS, send to the neighbor cell an indication of the timing difference, wherein the timing difference comprises a symbol timing difference;
- generate a CSI-RS configuration for the CSI-RS based on the determination that the serving cell for the UE is to supply the timing for the UE to use to measure the CSI-RS and the determination that the neighbor cell of the serving cell is to transmit the CSI-RS, wherein the CSI-RS configuration comprises an indication that the UE is to use the timing of the serving cell to measure the CSI-RS;
- and
- transmit the CSI-RS configuration comprising the indication to the UE.
7 more elements
A method of communication for a user equipment (UE), comprising:
- determining a timing difference between a serving cell of the UE and a neighbor cell of the serving cell;
- sending an indication of the timing difference to the serving cell, wherein the timing difference comprises a symbol timing difference;
- receiving a channel state information-reference signal (CSI-RS) configuration for a CSI-RS to be transmitted by the neighbor cell, wherein the CSI-RS configuration comprises an indication that the UE is to use timing of the serving cell to measure the CSI-RS;
- determining the timing of the serving cell;
- and
- using the timing of the serving cell to measure the CSI-RS transmitted by the neighbor cell.
3 more elements
A user equipment, comprising:
- a memory device;
- and
- a processing circuit coupled to the memory device and configured to:
- determine a timing difference between a serving cell of the UE and a neighbor cell of the serving cell;
- send an indication of the timing difference to the serving cell, wherein the timing difference comprises a symbol timing difference;
- receive a channel state information-reference signal (CSI-RS) configuration for a CSI-RS to be transmitted by a neighbor cell of a serving cell for the UE, wherein the CSI-RS configuration comprises an indication that the UE is to use timing of the serving cell to measure the CSI-RS;
- determine the timing of the serving cell;
- and
- use the timing of the serving cell to measure the CSI-RS transmitted by the neighbor cell.
6 more elements
Dependencies are inferred from the claim text.