Allocating radio resources in mobile communications system
First Claim
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1. A method for allocating radio resources in a mobile communication system, the method comprising:
- receiving, by a mobile terminal, a system information block (SIB) including grouping information for a random access procedure;
if two or more preamble groups exist, selecting, by the mobile terminal, at least one preamble group using the SIB based on an amount of data to be transmitted by the mobile terminal;
randomly selecting, by the mobile terminal, at least one preamble within the selected preamble group; and
transmitting, by the mobile terminal, the selected preamble.
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Abstract
Transmitting information using a preamble of a Random Access Channel (RACH) in an Evolved Universal mobile Telecommunications System (E-UMTS) is provided. A preamble transmission is used to inform a base station of specific information when a terminal uses a RACH and the base station efficiently allocates radio resources for data transmission to the terminal according to the specific information. Delay time before the terminal transmits data is reduced and unnecessary consumption of radio resources is minimized.
7 Citations
12 Claims
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1. A method for allocating radio resources in a mobile communication system, the method comprising:
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receiving, by a mobile terminal, a system information block (SIB) including grouping information for a random access procedure; if two or more preamble groups exist, selecting, by the mobile terminal, at least one preamble group using the SIB based on an amount of data to be transmitted by the mobile terminal; randomly selecting, by the mobile terminal, at least one preamble within the selected preamble group; and transmitting, by the mobile terminal, the selected preamble. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mobile communication apparatus, comprising:
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a receiving unit adapted to receive a system information block (SIB) including grouping information for a random access procedure; and a control unit adapted to select at least one preamble group using the SIB based on an amount of data to be transmitted by a mobile terminal if two or more preamble groups exist, to randomly select at least one preamble within the selected preamble group, and to transmit the selected preamble. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification