Techniques to provide energy efficient radio resource management

Patent metadata

Field	Value
Publication number	US-11223967-B2
Application number	US-201815954569-A
Country	US
Kind code	B2
Filing date	Apr 16, 2018
Priority date	Apr 18, 2017
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A method of wireless communications at a user equipment (UE) includes receiving, from a serving cell associated with a wireless network, a radio resource management (RRM) mode indicator that indicates a set of one or more beams for which cell measurement and reporting is to be performed by the UE; performing at least one cell measurement on at least one synchronization signal (SS) block received from at least one neighboring cell; determining, based at least in part on the RRM mode indicator, whether to decode a physical broadcast channel (PBCH) received in each SS block of the at least one SS block; and transmitting a cell measurement report, the cell measurement report based at least in part on the at least one cell measurement, the cell measurement report selectively including at least one beam index based at least in part on whether the PBCH is decoded.

First claim

What is claimed is:

1. A method of wireless communications at a user equipment (UE), comprising:
receiving at the UE, from a serving cell associated with a wireless network, radio resource control (RRC) messaging comprising a beam indicator that indicates a set of one or more beams for which cell measurement and reporting is to be performed by the UE, wherein the RRC messaging comprises at least one indication of whether the UE is to utilize a timing of the serving cell to derive a synchronization signal (SS) block index for at least one SS block received from at least one neighboring cell;
determining, for each neighboring cell of the at least one neighboring cell, whether to decode or to refrain from decoding a physical broadcast channel (PBCH) within the at least one SS block received from the at least one neighboring cell based at least in part on the at least one indication of whether the UE is to utilize the timing of the serving cell to derive the SS block index;
performing at least one cell measurement on the at least one SS block received from the at least one neighboring cell and at leas tone cell measurement on at least one SS block received from the serving cell;
and
transmitting a cell measurement report, the cell measurement report based at least in part on the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and on the at least one cell measurement on the at least one SS block received from the serving cell.

2. The method of claim 1 , wherein the at least one cell measurement on the at least one SS block received from the at least one neighboring cell comprises at least one intra-frequency measurement on the at least one SS block received from the at least one neighboring cell.

3. The method of claim 1 , further comprising:
determining that the serving cell and a neighboring cell of the at least one neighboring cell have a synchronized SS burst set periodicity and SS burst set transmission; and
determining, based at least in part on the determination that the serving cell and the neighboring cell have the synchronized SS burst set periodicity and SS burst set transmission, and based at least in part on a first timing of each SS block received from the serving cell, a second timing of each SS block in the at least one SS block received from the neighboring cell, wherein the timing of the serving cell comprises the first timing of each SS block received from the serving cell.

4. The method of claim 1 , wherein the set of one or more beams indicated by the beam indicator comprises a single beam, the method further comprising:
monitoring the single beam for the at least one SS block from the at least one neighboring cell;
determining, based at least in part on the beam indicator and the at least one indication, to refrain from decoding the PBCH received in each SS block of the at least one SS block from the at least one neighboring cell; and
formatting the cell measurement report, based at least in part on the beam indicator, to include an association of a cell identity (cell ID) of a neighboring cell of the at least one neighboring cell and one or more of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell.

5. The method of claim 1 , wherein the set of one or more beams indicated by the beam indicator comprises a plurality of beams, the method further comprising:
monitoring the plurality of beams for the at least one SS block from the at least one neighboring cell.

6. The method of claim 5 , further comprising:
determining a maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell;
determining, based at least in part on the beam indicator and the at least one indication, to refrain from decoding the PBCH received in each SS block of the at least one SS block from the at least one neighboring cell; and
formatting the cell measurement report, based at least in part on the beam indicator, to include an association of a cell identity (cell ID) of a neighboring cell of the at least one neighboring cell and the maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell.

7. The method of claim 5 , further comprising:
determining a maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell;
determining, based at least in part on the beam indicator and the at least one indication, to decode a first PBCH received in a first SS block associated with the maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell; and
formatting the cell measurement report, based at least in part on the beam indicator, to include an association of a cell identity (cell ID) of a neighboring cell of the at least one neighboring cell, a beam index obtained from the decoded first PBCH, and the maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell.

8. The method of claim 5 , further comprising:
determining a maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell;
determining that the maximum value satisfies a threshold;
determining, based at least in part on the beam indicator, the at least one indication, and the determination that the maximum value satisfies the threshold, to decode a first PBCH received in a first SS block associated with the maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell; and
formatting the cell measurement report, based at least in part on the beam indicator and the determination that the maximum value satisfies the threshold, to include an association of a cell identity (cell ID) of a neighboring cell of the at least one neighboring cell, a beam index obtained from the decoded first PBCH, and the maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell.

9. The method of claim 8 further comprising:
receiving the threshold from the serving cell.

10. The method of claim 5 , further comprising:
determining a maximum value of the at least one cell measurement on the at least one SS block received from the at least one neighboring cell and the at least one cell measurement on the at least one SS block received from the serving cell;
determining that the maximum value fails to satisfy a threshold;
determining, based at least in part on the beam indicator, the at least one indication, and the determination that the maximum value fails to satisfy the threshold, to refrain from decoding the PBCH received in each SS block of the at least one SS block from the at least one neighboring cell; and
formatting the cell measurement report, based at least

Assignees

• Qualcomm Inc

Inventors

• Lee Heechoon
• Ly Hung
• Ji Tingfang
• Sun Haitong

Classifications

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04B7/0632

  Channel quality parameters, e.g. channel quality indicator [CQI] · CPC title

• H04B7/0617 Primary

  for beam forming · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W84/045

  using private Base Stations, e.g. femto Base Stations, home Node B · CPC title