Beam selection in millimeter wave systems
AssigneeQUALCOMM Incorporated
InventorsVasanthan Raghavan, Valentin Alexandru Gheorghiu, Jung Ryu, Junyi Li
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Abstract
A beam selection method and apparatus suitable for millimeter wave (mmW) communication systems is disclosed. In one aspect, a user equipment (UE) may perform a beam sweep procedure to identify suitable downlink beams candidates from one or more gNBs. The UE may generate a beam list by selecting some of the downlink beams for active tracking. When beams on the beam list become unavailable, the UE may compare the number of available beams on the beam list with a threshold value. If the number of available beams falls below the threshold, the UE may perform another beam sweep procedure.
Claims21
A method of operating a user equipment (UE) comprising:
- performing a beam training procedure to determine useful beams;
- generating a first beam list by selecting a plurality of useful beams, the first beam list including a first number of beams from a first gNB and a second number of beams from a second gNB;
- tracking the beams on the first beam list and determining a number of useful beams on the beam list;
- and
- performing another beam training procedure when the number of useful beams falls below a threshold.
A user equipment (UE) comprising:
- a receiver configured to receive downlink signals;
- and
- a processor configured to:
- perform a beam training procedure to determine useful beams;
- and
- generate a first beam list by selecting a plurality of useful beams, the first beam list including a first number of beams from a first gNB and a second number of beams from a second gNB;
- track the beams on the first beam list and determine a number of useful beams on the beam list;
- and
- perform another beam training procedure when the number of useful beams falls below a threshold.
A user equipment (UE) comprising:
- means for performing a beam training procedure to determine the useful beams;
- and
- means for generating a first beam list by selecting a plurality of useful beams, the first beam list including a first number of beams from a first gNB and a second number of beams from a second gNB;
- means for tracking the beams on the first beam list and means for determining a number of useful beams on the beam list;
- and
- means for performing another beam training procedure when the number of useful beams falls below a threshold.
Dependencies are inferred from the claim text.