Method and user equipment for transmitting uplink signal
First Claim
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1. A method for transmitting an uplink signal by a user equipment, the method comprising:
- accessing, by the user equipment, a first downlink operating frequency of a first cell by receiving a synchronization signal and a broadcast signal through the first downlink operating frequency of the first cell;
receiving, by the user equipment, configuration information indicating a plurality of frequencies for uplink through the first downlink operating frequency of the first cell;
performing, by the user equipment, a physical random access channel (PRACH) transmission for initial random access through at least one frequency among the plurality of frequencies;
receiving, by the user equipment, a random access response (RAR) containing frequency information indicating a second uplink operating frequency among the plurality of frequencies through the first downlink operating frequency of the first cell in response to the PRACH transmission;
performing, by the user equipment, an uplink channel transmission through the second uplink operating frequency, other than a first unlink operating frequency of the first cell, based on the frequency information; and
performing, by the user equipment, a downlink channel reception for the user equipment through the first downlink operating frequency of the first cell, other than a second downlink operating frequency of a second cell different from the first cell,wherein the first cell is formed by the first downlink operating frequency and the first uplink operating frequency, and the second cell separate from the first cell is formed by the second downlink operating frequency and the second unlink operating frequency.
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Abstract
The present invention provides a method and user equipment for transmitting an uplink signal capable of enhancing coverage while conserving energy by separating a cell for receiving a downlink from a cell for transmitting an uplink.
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Citations
20 Claims
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1. A method for transmitting an uplink signal by a user equipment, the method comprising:
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accessing, by the user equipment, a first downlink operating frequency of a first cell by receiving a synchronization signal and a broadcast signal through the first downlink operating frequency of the first cell; receiving, by the user equipment, configuration information indicating a plurality of frequencies for uplink through the first downlink operating frequency of the first cell; performing, by the user equipment, a physical random access channel (PRACH) transmission for initial random access through at least one frequency among the plurality of frequencies; receiving, by the user equipment, a random access response (RAR) containing frequency information indicating a second uplink operating frequency among the plurality of frequencies through the first downlink operating frequency of the first cell in response to the PRACH transmission; performing, by the user equipment, an uplink channel transmission through the second uplink operating frequency, other than a first unlink operating frequency of the first cell, based on the frequency information; and performing, by the user equipment, a downlink channel reception for the user equipment through the first downlink operating frequency of the first cell, other than a second downlink operating frequency of a second cell different from the first cell, wherein the first cell is formed by the first downlink operating frequency and the first uplink operating frequency, and the second cell separate from the first cell is formed by the second downlink operating frequency and the second unlink operating frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A user equipment for transmitting an uplink signal, the user equipment comprising:
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a radio frequency (RF) unit and a processor configured to control the RF unit, the processor further configured to; access a first downlink operating frequency of a first cell by receiving a synchronization signal and a broadcast signal through the first downlink operating frequency of the first cell, control the RF unit to receive configuration information indicating a plurality of frequencies for an uplink through the first downlink operating frequency of the first cell, control the RF unit to perform a physical random access channel (PRACH) transmission for initial random access through at least one frequency among the plurality of frequencies, control the RF unit to receive a random access response (RAR) containing frequency information indicating a second uplink operating frequency among the plurality of frequencies through the first downlink operating frequency of the first cell in response to the PRACH transmission, control the RF unit to perform an uplink channel transmission through the second uplink operating frequency, other than a first unlink operating frequency of the first cell, based on the frequency information, and control the RF unit to perform a downlink channel reception for the user equipment through the first downlink operating frequency of the first cell, other than a second downlink operating frequency of a second cell different from the first cell, wherein the first cell is formed by the first downlink operating frequency and the first uplink operating frequency, and the second cell separate from the first cell is formed by the second downlink operating frequency and the second uplink operating frequency. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification