System and method for transmitting/receiving data in a multicarrier communication system
First Claim
1. An operation method of a mobile subscriber (MS) for data exchange between the MS and a base station (BS) in a multicarrier communication system including the MS, and the BS providing a service to the MS, the method comprising the steps of:
- dividing a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generating a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifying a plurality of segment types according to each of the segments, for data transmission;
measuring a channel state and extracting channel state information corresponding to the channel state;
estimating a segment type using the extracted channel state information, and determining whether there is a need for a change in a segment type currently allocated to the MS;
if there is a need for a change in the segment type, transmitting a segment type change request message to the BS; and
upon receiving a segment type change grant message from the BS in response to the segment type change request message, receiving data in a segment type corresponding to the received segment type change grant message.
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Accused Products
Abstract
A multicarrier communication system divides a full frequency band into a plurality of sub-carrier frequency bands, generates a plurality of segments having a frequency-time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifies a plurality of segment types according to each of the segments, for data transmission. A mobile subscriber (MS) measures a channel state, extracts channel state information corresponding to the channel state, estimates a segment type using the extracted channel state information, and determines whether there is a need for a change in a segment type allocated to the MS itself. If there is a need for a change in the segment type, the MS transmits a segment type change request message to a base station (BS). Upon receiving a segment type change grant message from the BS in response to the segment type change request message, the MS receives data in a segment type corresponding to the received message.
17 Citations
64 Claims
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1. An operation method of a mobile subscriber (MS) for data exchange between the MS and a base station (BS) in a multicarrier communication system including the MS, and the BS providing a service to the MS, the method comprising the steps of:
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dividing a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generating a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifying a plurality of segment types according to each of the segments, for data transmission;
measuring a channel state and extracting channel state information corresponding to the channel state;
estimating a segment type using the extracted channel state information, and determining whether there is a need for a change in a segment type currently allocated to the MS;
if there is a need for a change in the segment type, transmitting a segment type change request message to the BS; and
upon receiving a segment type change grant message from the BS in response to the segment type change request message, receiving data in a segment type corresponding to the received segment type change grant message. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An operation method of a base station (BS) for data exchange between a mobile subscriber (MS) and the BS in a multicarrier communication system including the MS, and the BS providing a service to the MS, the method comprising the steps of:
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dividing a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generating a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifying a plurality of segment types according to each of the segments, for data transmission;
predicting a load state of each individual segment type using load prediction information, and receiving a segment type change request message;
determining whether it is possible to change a segment type in response to the segment type change request;
if it is possible to change a segment type, transmitting a segment type change grant message to the MS and transmitting data to the MS in the changed segment type; and
if it is not possible to change a segment type, transmitting data in an existing segment type. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. An operation method of a mobile subscriber (MS) for data exchange between the MS and a base station (BS) in a multicarrier communication system including the MS, and the BS providing a service to the MS, the method comprising the steps of:
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dividing a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generating a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifying a plurality of segment types according to each of the segments, for data transmission;
measuring a channel state and extracting channel state information corresponding to the channel state; and
upon receiving a segment type change grant message from the BS after transmitting the extracted channel state information to the BS, receiving data in a segment type corresponding to the received segment type change grant message. - View Dependent Claims (18, 19)
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20. An operation method of a base station (BS) for data exchange in a multicarrier communication system including a mobile subscriber (MS), and the BS providing a service to the MS, the method comprising the steps of:
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dividing a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generating a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifying a plurality of segment types according to each of the segments, for data transmission;
predicting a load state of each individual segment type using load prediction information, and receiving channel state information;
estimating a segment type using the channel state information to determine whether there is a need for a change in a segment type allocated to the MS;
if there is a need for a change in the segment type, determining whether it is possible to change the segment type;
if it is possible to change the segment type, transmitting a segment type change grant message to the MS and transmitting data to the MS in the changed segment type; and
if it is not possible to change the segment type, transmitting data in an existing segment type. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A data exchange system in a multicarrier communication system including a mobile subscriber (MS) and a base station (BS) providing a service to the MS;
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wherein the data exchange system divides a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generates a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifies a plurality of segment types according to each of the segments, for data transmission;
wherein the MS comprises;
a channel state information extractor for measuring a channel state and extracting channel state information corresponding to the channel state;
a realtime segment type estimator for setting a realtime segment type using the extracted channel state information;
a non-realtime segment type estimator for setting a non-realtime segment type using the channel state information; and
a history manager for determining whether there is a need for a change in the segment types set in the realtime segment type estimator and the non-realtime segment type estimator, and transmitting a segment type change request message to the BS if there is a need for a change in the segment types. - View Dependent Claims (34, 35, 36, 37, 38)
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39. A data exchange system in a multicarrier communication system including a mobile subscriber (MS) and a base station (BS) providing a service to the MS;
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wherein the data exchange system divides a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generates a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifies a plurality of segment types according to each of the segments, for data transmission;
wherein the BS comprises;
a scheduler for classifying data to be transmitted to the MS into each segment type, and scheduling the data according to each segment type using a preset scheduling scheme;
a type change manager for receiving a segment type change request message from the MS, predicting a load state of each individual segment type using load prediction information, determining whether it is possible to change a segment type in response to the segment type change request message, and transmitting a segment type change grant message to the MS if it is possible to change the segment type;
a queue state manager for managing a queue state according to the segment type classification, and generating information on the queue sate according to each segment type; and
a resource map manager for receiving a segment type change command from the type change manager and managing a resource map so as to keep load balancing for each individual segment type. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A data exchange system in a multicarrier communication system including a mobile subscriber (MS) and a base station (BS) providing a service to the MS;
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wherein the data exchange system divides a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generates a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifies a plurality of segment types according to each of the segments, for data transmission;
wherein the MS includes a channel state information extractor for measuring a channel state, extracting channel state information corresponding to the channel state, and transmitting the channel state information to the BS. - View Dependent Claims (50, 51)
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52. A data exchange system in a multicarrier communication system including a mobile subscriber (MS) and a base station (BS) providing a service to the MS;
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wherein the data exchange system divides a full frequency band of the communication system into a plurality of sub-carrier frequency bands, generates a plurality of segments having a frequency domain and a time domain occupied by a predetermined number of sub-frequency bands and a predetermined number of time intervals, and classifies a plurality of segment types according to each of the segments, for data transmission;
wherein the BS comprises;
a non-realtime segment type estimator for receiving channel state information from the MS and setting a non-realtime segment type;
a history manager for determining whether there is a need for a change in the segment types set in a realtime segment type estimator and the non-realtime segment type estimator;
a scheduler for classifying data to be transmitted to the MS into each segment type, and scheduling the data according to each segment type using a preset scheduling scheme;
a type change manager for predicting a load state of each individual segment type using load prediction information, and transmitting a segment type change grant message to the BS if the history manager determines that it is possible to change the segment type;
a queue state manager for managing a queue state based on the segment type classification, and generating information on the queue state according to each segment type; and
a resource map manager for receiving a segment type change command from the type change manager and managing a resource map so as to keep load balancing for each individual segment type. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification