METHOD AND USER EQUIPMENT FOR TRANSMITTING RANDOM ACCESS SIGNALS, AND METHOD AND BASE STATION FOR RECEIVING RANDOM ACCESS SIGNALS
First Claim
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1. A method for transmitting, by a user equipment (UE), random access signals, the method comprising:
- receiving, by the UE, configuration information of a first random access channel (RACH) resource for a first RACH preamble format and configuration information of a second RACH resource for a second RACH preamble format; and
transmitting, by the UE, a physical RACH (PRACH) with the first RACH preamble format on the first RACH resource or with the second RACH preamble format on the second RACH resource,wherein the UE transmits the PRACH with the first RACH preamble format on the first RACH resource if transmission (Tx) and reception (Rx) (Tx/Rx) beam correspondence holds at the UE, and the UE transmits the PRACH with second RACH preamble format on the second RACH resource if Tx/Rx beam correspondence does not hold at the UE.
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Abstract
Disclosed herein are a method and apparatus for transmitting/receiving random access signals. A first random access channel (RACH) resource for a first RACH preamble format and a second RACH resource for a second RACH preamble format are configured, separately. The first RACH resource and the second RACH resource are for a UE at which Tx/Rx beam correspondence holds and for a UE at which Tx/Rx beam correspondence does not hold, respectively. A UE can use the first or second RACH resource, depending on whether or not Tx/Rx beam correspondence holds at the UE.
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Citations
18 Claims
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1. A method for transmitting, by a user equipment (UE), random access signals, the method comprising:
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receiving, by the UE, configuration information of a first random access channel (RACH) resource for a first RACH preamble format and configuration information of a second RACH resource for a second RACH preamble format; and transmitting, by the UE, a physical RACH (PRACH) with the first RACH preamble format on the first RACH resource or with the second RACH preamble format on the second RACH resource, wherein the UE transmits the PRACH with the first RACH preamble format on the first RACH resource if transmission (Tx) and reception (Rx) (Tx/Rx) beam correspondence holds at the UE, and the UE transmits the PRACH with second RACH preamble format on the second RACH resource if Tx/Rx beam correspondence does not hold at the UE. - View Dependent Claims (2, 3, 4, 5)
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6. A method for receiving, by a base station (BS), random access signals, the method comprising:
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transmitting, by the BS, configuration information of a first random access channel (RACH) resource for a first RACH preamble format and configuration information of a second RACH resource for a second RACH preamble format; and receiving, by the UE, a physical RACH (PRACH) with the first RACH preamble format on the first RACH resource or with the second RACH preamble format on the second RACH resource from a user equipment (UE), wherein the BS receives the PRACH with the first RACH preamble format on the first RACH resource if transmission (Tx) and reception (Rx) (Tx/Rx) beam correspondence holds at the UE, and the BS receives the PRACH with second RACH preamble format on the second RACH resource if Tx/Rx beam correspondence does not hold at the UE. - View Dependent Claims (7, 8, 9)
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10. A user equipment (UE) for transmitting random access signals, the UE comprising:
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a radio frequency (RF) unit, and a processor configured to control the RF unit, the processor configured to; control the RF unit to receive configuration information of a first random access channel (RACH) resource for a first RACH preamble format and configuration information of a second RACH resource for a second RACH preamble format; and control the RF unit to transmit a physical RACH (PRACH) with the first RACH preamble format on the first RACH resource or with the second RACH preamble format on the second RACH resource, wherein the processor is configured to control the RF unit to transmit the PRACH with the first RACH preamble format on the first RACH resource if transmission (Tx) and reception (Rx) (Tx/Rx) beam correspondence holds at the UE, and the processor is configured to control the RF unit to transmit the PRACH with second RACH preamble format on the second RACH resource if Tx/Rx beam correspondence does not hold at the UE. - View Dependent Claims (11, 12, 13, 14)
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15. A base station (BS) for receiving random access signals, the BS comprising:
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a radio frequency (RF) unit, and a processor configured to control the RF unit, the processor configured to; control the RF unit to transmit configuration information of a first random access channel (RACH) resource for a first RACH preamble format and configuration information of a second RACH resource for a second RACH preamble format; and control the RF unit to receive a physical RACH (PRACH) with the first RACH preamble format on the first RACH resource or with the second RACH preamble format on the second RACH resource from a user equipment (UE), wherein the processor is configured to control the RF unit to receive the PRACH with the first RACH preamble format on the first RACH resource if transmission (Tx) and reception (Rx) (Tx/Rx) beam correspondence holds at the UE, and the processor is configured to control the RF unit to receive the PRACH with second RACH preamble format on the second RACH resource if Tx/Rx beam correspondence does not hold at the UE. - View Dependent Claims (16, 17, 18)
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Specification