Methods and apparatus for vertical beamforming
First Claim
1. A method for use in a wireless transmit/receive unit (WTRU) for determining resources, the method comprising:
- receiving, by the WTRU, a configuration message, wherein the configuration message is at least one of a broadcast message or a radio resource control (RRC) message, from a base station that includes correspondence information regarding a plurality of beam reference signals, wherein the correspondence information designates at least one set of Physical Random Access Channel (PRACH) resources for each of the plurality of beam reference signals;
measuring, by the WTRU, the plurality of beam reference signals, transmitted from the base station;
selecting, by the WTRU, a beam reference signal from among the plurality of measured beam references signals;
determining, by the WTRU, a set of PRACH resources designated for the selected beam reference signal based on the received correspondence information; and
transmitting, by the WTRU, a PRACH signal using at least one PRACH resource of the determined set of PRACH resources.
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Abstract
A method and apparatus for determining a vertical beam for reception are disclosed herein. A method in a wireless transmit/receive unit (WTRU) includes that the WTRU may receive a broadcast message from an evolved Node B (eNB) that includes information associated with a plurality of beam reference signals, wherein the information includes at least one set of Physical Random Access Control Channel (PRACH) resources associated with each of the plurality of beam reference signals. Further, the WTRU may measure reference signals transmitted on each of the plurality of beam reference signals. Then, the WTRU may select a beam reference signal from among the plurality of beam reference signals. In addition, the WTRU may transmit a PRACH preamble in a set of resources associated with the selected beam reference signal. The WTRU may then receive further communications from the eNB.
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Citations
20 Claims
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1. A method for use in a wireless transmit/receive unit (WTRU) for determining resources, the method comprising:
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receiving, by the WTRU, a configuration message, wherein the configuration message is at least one of a broadcast message or a radio resource control (RRC) message, from a base station that includes correspondence information regarding a plurality of beam reference signals, wherein the correspondence information designates at least one set of Physical Random Access Channel (PRACH) resources for each of the plurality of beam reference signals; measuring, by the WTRU, the plurality of beam reference signals, transmitted from the base station; selecting, by the WTRU, a beam reference signal from among the plurality of measured beam references signals; determining, by the WTRU, a set of PRACH resources designated for the selected beam reference signal based on the received correspondence information; and transmitting, by the WTRU, a PRACH signal using at least one PRACH resource of the determined set of PRACH resources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 14)
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10. A wireless transmit/receive unit (WTRU) for determining resources, the WTRU comprising:
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a receiver configured to receive a configuration message, wherein the configuration message is at least one of a broadcast message or a radio resource control (RRC) message, from a base station that includes correspondence information regarding a plurality of beam reference signals, wherein the correspondence information designates at least one set of Physical Random Access Channel (PRACH) resources for each of the plurality of beam reference signals; a processor, operatively coupled to the receiver, configured to measure the plurality of beam reference signals transmitted from the base station; the processor further configured to select a beam reference signal from among the plurality of measured beam references signals; the processor further configured to determine a set of PRACH resources designated for the selected beam reference signal based on the received correspondence information; and a transmitter, operatively coupled to the processor, the transmitter and the processor configured to transmit a PRACH signal using at least one PRACH resource of the determined set of PRACH resources. - View Dependent Claims (11, 12, 13, 15, 16, 17, 18)
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19. A method for use in a wireless transmit/receive unit (WTRU) for determining resources, the method comprising:
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receiving, by the WTRU, a configuration message, wherein the configuration message is at least one of a broadcast message or a radio resource control (RRC) message, from a base station that includes correspondence information regarding a plurality of beam reference signals, wherein the correspondence information provides at least one set of Physical Random Access Channel (PRACH) preambles, wherein the set of PRACH preambles includes one or more PRACH preambles, for each of the plurality of beam reference signals; measuring, by the WTRU, the plurality of beam reference signals, transmitted from the base station; selecting, by the WTRU, a beam reference signal from among the plurality of measured beam references signals; determining, by the WTRU, a set of PRACH preambles designated for the selected beam reference signal based on the received correspondence information; and transmitting, by the WTRU, a PRACH preamble of the determined set of PRACH preambles. - View Dependent Claims (20)
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Specification