USER EQUIPMENT AND BASE STATION IN CARRIER AGGREGATION SYSTEM, AND CALL ADMISSION CONTROL METHOD FOR USE WITH THE USER EQUIPMENT AND BASE STATION
First Claim
1. User equipment in a carrier aggregation system which provides multiple component carriers, the user equipment comprising:
- a connection setup requesting unit to transmit a connection setup request message including information about one or more physical layers for communication with the respective component carriers; and
a connection establishing unit to receive a response to the connection setup request message and to change component carriers selected by the physical layers to other component carriers or establish uplink timing alignment between the component carriers selected by the physical layers, based on the response to the connection setup request message.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are user equipment and a base station in a carrier aggregation system, and a call admission method thereof. The user equipment includes a plurality of physical layers, and the base station provides multiple component carriers. When messages for connection setup are transmitted and received between the user equipment and base station, the messages include information about what component carriers are selected by the physical layers, information about what component carriers are selectable by the physical layers, and information about calculations for uplink timing alignment, and call admission control and load balancing is performed based on the information included in the messages. Accordingly, in the carrier aggregation system, quicker call admission and load balancing are achieved.
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Citations
20 Claims
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1. User equipment in a carrier aggregation system which provides multiple component carriers, the user equipment comprising:
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a connection setup requesting unit to transmit a connection setup request message including information about one or more physical layers for communication with the respective component carriers; and a connection establishing unit to receive a response to the connection setup request message and to change component carriers selected by the physical layers to other component carriers or establish uplink timing alignment between the component carriers selected by the physical layers, based on the response to the connection setup request message. - View Dependent Claims (2, 3, 4, 5)
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- 6. A base station in a carrier aggregation system which provides multiple component carriers, the base station comprising a call admission unit to receive a connection setup request message from user equipment, and to transmit a connection setup admission message or a connection setup rejection message, including additional information, depending on whether each component carrier fulfills the requirements of the user equipment.
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12. A method in which user equipment performs a call admission procedure in a carrier aggregation system which provides multiple component carriers, comprising:
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transmitting a connection setup request message including information about one or more physical layers for communications with the respective component carriers, to a base station; and receiving a response to the connection setup request message from the base station, and changing component carriers selected by the physical layers to other component carriers or establishing uplink timing alignment between the component carriers selected by the physical layers. - View Dependent Claims (13, 14)
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15. A method in which a base station performs a call admission procedure in a carrier aggregation system which provides multiple component carriers, comprising:
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receiving a connection setup request message from user equipment; determining whether each component carrier fulfills the requirements of the user equipment, and transmitting, to the user equipment, a connection setup admission message or a connection setup rejection message, including additional information, according to the results of the determination. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification