Method and apparatus for allocating radio resource using random access procedure in a mobile communication system
First Claim
1. A method for transmitting a random access preamble using a random access procedure in a mobile communication system, the method comprising:
- determining a random access preamble set from a plurality of random access preamble sets based on both a path loss and a size of a message that a user equipment will transmit after a transmission of the random access preamble;
determining a random access preamble based on the determined random access preamble set; and
transmitting the determined random access preamble to a base station on a random access channel,wherein a first random access preamble set is determined if the path loss is less than a path loss threshold and the size of the message is greater than a message size threshold.
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Abstract
A method for transmitting a random access preamble using a random access procedure in a mobile communication system. The random access preamble transmission method includes selecting, upon triggering of the random access procedure, one of random access preamble sets predefined between a User Equipment (UE) and an Evolved Node B (ENB) according to whether a radio channel condition is greater than a radio channel condition threshold and a size of a message that the UE will transmit after transmission of the random access preamble is greater than a minimum message size, randomly selecting a random access preamble from the selected random access preamble set, and transmitting the selected random access preamble to the ENB over a random access channel.
20 Citations
28 Claims
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1. A method for transmitting a random access preamble using a random access procedure in a mobile communication system, the method comprising:
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determining a random access preamble set from a plurality of random access preamble sets based on both a path loss and a size of a message that a user equipment will transmit after a transmission of the random access preamble; determining a random access preamble based on the determined random access preamble set; and transmitting the determined random access preamble to a base station on a random access channel, wherein a first random access preamble set is determined if the path loss is less than a path loss threshold and the size of the message is greater than a message size threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for allocating radio resources using a random access procedure in a mobile communication system, the method comprising:
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receiving a random access channel from a user equipment (UE) at a base station, and extracting a random access preamble from the random access channel; determining a random access preamble set, to which the extracted random access preamble belongs, among a plurality of random access preamble sets; and allocating radio resources based on the determined random access preamble set, wherein the random access preamble set is determined based on a path loss and a size of a message that the UE will transmit after a transmission of the random access preamble, and wherein a first random access preamble set is determined if the path loss is less than a path loss threshold and the size of the message is greater than a message size threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for transmitting a random access preamble using a random access procedure in a mobile communication system, the apparatus comprising:
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a random access preamble set selector configured to determine a random access preamble set from a plurality of random access preamble sets based on both a path loss and a size of a message that a user equipment will transmit after a transmission of the random access preamble; a random access preamble selector configured to determine a random access preamble based on the determined random access preamble set; and a transmitter configured to transmit the random access preamble determined by the random access preamble selector to a base station on a random access channel, wherein a first random access preamble set is determined if the path loss is less than a path loss threshold and the size of the message is greater than a message size threshold. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A base station apparatus for allocating radio resources using a random access procedure in a mobile communication system, the apparatus comprising:
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a receiver configured to receive a random access channel from a user equipment (UE); a random access preamble extractor configured to extract a random access preamble from the random access channel; a random access preamble set determiner configured to determine a random access preamble set, to which the extracted random access preamble belongs, among a plurality of random access preamble sets; and a scheduler configured to allocate radio resources according to the determined random access preamble set, wherein the random access preamble set is determined based on both a path loss and a size of a message that the UE will transmit after a transmission of the random access preamble, and wherein a first random access preamble set is determined if the path loss is less than a path loss threshold and the size of the message is greater than a message size threshold. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification