TERMINAL DEVICE OF CARRIER AGGREGATION BASED MOBILE COMMUNICATION SYSTEM AND BUFFER STATUS REPORTING METHOD THEREOF
First Claim
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1. A buffer status reporting method of a terminal device in a mobile communication system, the method comprising:
- obtaining a radio resource allocation for a plurality of component carriers from a base station;
generating a plurality of medium access control-protocol data units (MAC-PDUs) comprising buffer status information corresponding to the plurality of component carriers, the plurality of MAC-PDUs comprising generated sequence numbers (SNs); and
transmitting the plurality of MAC-PDUs to the base station through the plurality of component carriers.
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Abstract
Provided is a buffer status reporting method of a terminal device in a mobile communication system. The buffer status reporting method includes obtaining a radio resource allocation for a plurality of component carriers from a base station, configuring a plurality of medium access control-protocol data units (MAC-PDUs) including buffer status information corresponding to the plurality of component carriers, the plurality of MAC-PDUs including generated sequence numbers (SNs), and transmitting the plurality of MAC-PDUs to the base station through the plurality of component carriers.
92 Citations
14 Claims
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1. A buffer status reporting method of a terminal device in a mobile communication system, the method comprising:
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obtaining a radio resource allocation for a plurality of component carriers from a base station; generating a plurality of medium access control-protocol data units (MAC-PDUs) comprising buffer status information corresponding to the plurality of component carriers, the plurality of MAC-PDUs comprising generated sequence numbers (SNs); and transmitting the plurality of MAC-PDUs to the base station through the plurality of component carriers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of requesting for a scheduling from a base station after a buffer status reporting is triggered in a multi-component carrier-based mobile communication system terminal, the method comprising:
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detecting whether there is a radio resource allocation to at least one component carrier; determining whether an uplink control channel of a component carrier finally used in a random access is usable if there is no radio resource allocation; checking whether there is other component carrier corresponding to a usable uplink control channel if the uplink control channel is unusable; and executing a scheduling request by performing the random access if there is no component carrier having the useable uplink control channel. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A terminal device in a carrier aggregation-based mobile communication system, the terminal device comprising:
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transmission buffers storing transmission packets and corresponding to a plurality of component carriers, respectively; a control unit sequentially generating MAC-PDUs comprising buffer status information of the transmission buffers corresponding to one or more component carriers assigned with uplink radio resource among the plurality of component carriers, MAC-PDUs comprising generated SNs; and a transmission unit transmitting the MAC-PDUs to the assigned component carrier according to the control of the control unit.
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Specification