System and method for transmitting/receiving data in a multicarrier communication system

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:

• 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.

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;
• 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.

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:

• 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.

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;

• 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.

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;

• 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.

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;

• 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.