Apparatus and method for operating frequency resources in a mobile communication system
First Claim
1. A method of transmitting and receiving data using Channel State Information (CSI) in a mobile communication system, comprising the steps of:
- setting, by a Base Station (BS), the CSI of a Mobile Station (MS) to an initial CSI and transmitting data to the MS according to the initial CSI;
transmitting, by the MS, a downlink CSI to the BS;
setting, by the BS, a group of the MS based on the downlink CSI; and
transmitting, by the BS, data to the MS according to a frequency hopping pattern for the group of the MS among frequency hopping patterns preset for predetermined groups,wherein the frequency hopping pattern for the group of the MS is determined according to whether coherence time measured by the MS runs over a preset time or a coherence bandwidth measured by the MS is greater than a threshold,wherein the frequency hopping pattern for the group of the MS is generated according to a frequency hopping speed that is faster than a currently used frequency hopping speed on at least one of a band basis and a subcarrier basis, when the coherence time runs over the preset time or the coherence bandwidth is greater than the threshold.
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Abstract
A frequency resource operating apparatus and method for transmitting and receiving data at a different hopping pattern speed according to a CSI in a BWA communication system are provided. In a method of transmitting and receiving data using CSI in a mobile communication system, a BS sets the CSI of an MS to an initial CSI and sends data to the MS according to the initial CSI. The MS sends a downlink CSI to the BS. The BS groups the MS based on the downlink CSI and sends data to the MS according to a hopping pattern for the group of the MS among hopping patterns preset for predetermined groups.
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Citations
15 Claims
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1. A method of transmitting and receiving data using Channel State Information (CSI) in a mobile communication system, comprising the steps of:
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setting, by a Base Station (BS), the CSI of a Mobile Station (MS) to an initial CSI and transmitting data to the MS according to the initial CSI; transmitting, by the MS, a downlink CSI to the BS; setting, by the BS, a group of the MS based on the downlink CSI; and transmitting, by the BS, data to the MS according to a frequency hopping pattern for the group of the MS among frequency hopping patterns preset for predetermined groups, wherein the frequency hopping pattern for the group of the MS is determined according to whether coherence time measured by the MS runs over a preset time or a coherence bandwidth measured by the MS is greater than a threshold, wherein the frequency hopping pattern for the group of the MS is generated according to a frequency hopping speed that is faster than a currently used frequency hopping speed on at least one of a band basis and a subcarrier basis, when the coherence time runs over the preset time or the coherence bandwidth is greater than the threshold. - View Dependent Claims (2, 3, 4)
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5. A method of transmitting and receiving data using Channel State Information (CSI) in a mobile communication system, comprising the steps of:
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receiving, by a Base Station (BS), a random access signal from at least one Mobile station (MS); determining, by the BS, the CSI of the at least one MS to be an initial CSI and allocating frequency resources to the at least one MS based on the initial CSI; transmitting, by the at least one MS, data using the allocated frequency resources to the BS; measuring, by the BS, the CSI of the at least one MS operating based on the initial CSI; resetting, by the BS, a group of the at least one MS according to the measured CSI; allocating, by the BS, different frequency resources to the reset group of the at least one MS according to the CSI of the reset group; and transmitting, by the BS, data to the at least one MS using a frequency hopping pattern for the reset group that is determined according to whether a coherence time measured by the at least one MS runs over a preset time or a coherence bandwidth measured by the at least one MS is greater than a threshold, wherein transmitting data to the at least one MS comprises transmitting the data using a frequency hopping pattern that is determined according to a frequency hopping speed that is faster than a currently used frequency hopping speed on at least one of a band basis and a subcarrier basis, when the coherence time runs over the preset time or the coherence bandwidth is greater than the threshold. - View Dependent Claims (6, 7, 8, 9)
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10. A system for transmitting and receiving data using Channel State Information (CSI) in a mobile communication system, comprising:
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a Base Station (BS) for grouping Mobile Stations (MSs) into predetermined groups according to CSIs of the MSs, applying different frequency hopping patterns to the groups according to the CSIs of the groups, and transmitting and receiving data to and from the MSs included in the groups using the frequency hopping patterns applied to the groups; and an MS from among the MSs for transmitting and receiving data to and from the BS using a frequency hopping pattern applied to a group to which the MS belongs from among the groups, wherein the frequency hopping pattern is determined according to whether a coherence time measured by the MS runs over a preset time or a coherence bandwidth measured by the MS is greater than a threshold, wherein the frequency hopping pattern is generated according to a frequency hopping speed that is faster than a currently used frequency hopping speed on at least one of a band basis and a subcarrier basis, when the coherence time runs over the reset time or the coherence bandwidth is greater than the threshold. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification