Method and apparatus for beam detection in a wireless communication system
AssigneeASUSTeK COMPUTER INC.
InventorRichard Lee-Chee Kuo
Life of this patent
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Abstract
A method and apparatus for beam detection in a wireless communication system. In one embodiment, the method includes the UE initiating a RA procedure. The method also includes the UE transmitting multiple RA preambles to a base station of the cell at different occasions for the base station to determine a beam set of the UE. The method further includes the UE starts monitoring a PDCCH for RA response reception from the base station after finishing transmissions of the multiple RA preambles.
Claims17
A method for determining a beam set used by a user equipment (UE) in a cell of a wireless communication system, wherein there are multiple beams in the cell, comprising:
- a base station of the cell determines an initial beam set of the UE via a contention based random access procedure;
- the base station of the cell transmits a message indicating reference signal (RS) resources on a cell to the UE after the initial beam set of the UE has been determined,
- wherein the RS resources define periodic resources for RS transmissions, and
- wherein there are multiple contiguous symbols with resources for transmissions of multiple RSs by the UE in each RS period, and a length of each RS period is greater than a length of the multiple contiguous symbols with resources for transmissions of multiple RSs by the UE in each RS period;
- and
- the base station of the cell uses at least one beam to receive a RS transmitted from the UE on each symbol of the multiple contiguous symbols in each RS period.
A method for reference signal (RS) transmissions by a user equipment (UE) in a cell of a wireless communication system, comprising:
- the UE performs a contention based random access procedure for a base station of the cell to determine an initial beam set of the UE;
- the UE receives a message indicating RS resources on a cell after the initial beam set of the UE has been determined by the base station of the cell,
- wherein the RS resources define periodic resources for RS transmissions, and
- wherein there are multiple contiguous symbols with resources for transmissions of multiple RSs by the UE in each RS period, and a length of each RS period is greater than a length of the multiple contiguous symbols with resources for transmissions of multiple RSs by the UE in each RS period;
- and
- the UE transmits multiple RSs on the multiple contiguous symbols in each RS period to the base station of the cell.
A user equipment (UE), comprising:
- a control circuit;
- a processor installed in the control circuit;
- and
- a memory installed in the control circuit and coupled to the processor;
- wherein the processor is configured to execute a program code stored in the memory to:
- perform a contention based random access procedure for a base station of the cell to determine an initial beam set of the UE;
- receive a message indicating reference signal (RS) resources on a cell after the initial beam set of the UE has been determined by the base station of the cell,
- wherein the RS resources define periodic resources for RS transmissions, and
- wherein there are multiple contiguous symbols with resources for transmissions of multiple RSs by the UE in each RS period, and a length of each RS period is greater than a length of the multiple contiguous symbols with resources for transmissions of multiple RSs by the UE in each RS period;
- and
- transmit multiple RSs on the multiple contiguous symbols in each RS period to the base station of the cell.
Dependencies are inferred from the claim text.