Abstract:
An apparatus and methods for communicating in a wireless access system using a medium access control protocol data unit (MAC PDU), the method including receiving, by a mobile station (MS) from a base station (BS), a dynamic service addition request (AAI_DSA-REQ) message requesting to create a service flow, the AAI_DSA-REQ message including a first MAC header type parameter indicating a type of a MAC header included in the MAC PDU of the service flow and a flow identifier (FID) identifying a connection associated with the service flow; transmitting, by the MS to the BS, a dynamic service addition response (AAI_DSA-RSP) message in response to the AAI_DSA-REQ message, the AAI_DSA-RSP message including a second MAC header type parameter indicating the type of a MAC header included in the MAC PDU of the service flow; and communicating with the BS using the MAC PDU.
Abstract:
A method of transmitting pilots id disclosed. The method of transmitting pilots includes transmitting pilots over N orthogonal frequency division multiplexing (OFDM) symbols, wherein a pilot at subcarrier k for OFDM symbol n is determined to have time varying characteristic, thereby to prevent the cause of spectral lines.
Abstract:
A method for sending and receiving multi-carrier information in a communication system supporting a multi-carrier includes sending by a base station system information to the terminal via a broadcast message, the system information regarding multi-carriers that the base station is able to support; receiving a unicast message from the terminal, the unicast message including information related to carriers that the terminal is able to support or prefers in the multi-carrier list included in the system information; and sending multi-carrier allocation information including a primary carrier and a second carrier that the terminal will use, to the terminal via a unicast message.
Abstract:
A method for configuring system information, a method for transmitting system information, and a method for transmitting resource ratio information are disclosed. A method for receiving system information elements includes receiving a first message including a fixed-size system information element from a base station, and receiving a second message including an variable-size system information element from the base station.
Abstract:
A method for efficiently performing an initial access in an MS in a multi-carrier broadband wireless access system is disclosed. The method includes scanning a plurality of carriers supported by a BS, and selecting one of the scanned carriers as a first carrier and receiving an SFH of the first carrier. The SFH of the first carrier includes at least one of a field indicating load status of the first carrier and recommended network entry carrier information including information about a second carrier in good load status.
Abstract:
A method for sending and receiving multi-carrier information in a communication system supporting a multi-carrier includes sending by a base station system information to the terminal via a broadcast message, the system information regarding multi-carriers that the base station is able to support; receiving a unicast message from the terminal, the unicast message including information related to carriers that the terminal is able to support or prefers in the multi-carrier list included in the system information; and sending multi-carrier allocation information including a primary carrier and a second carrier that the terminal will use, to the terminal via a unicast message.
Abstract:
A method for sending and receiving multi-carrier information in a communication system supporting a multi-carrier includes sending by a base station system information to the terminal via a broadcast message, the system information regarding multi-carriers that the base station is able to support; receiving a unicast message from the terminal, the unicast message including information related to carriers that the terminal is able to support or prefers in the multi-carrier list included in the system information; and sending multi-carrier allocation information including a primary carrier and a second carrier that the terminal will use, to the terminal via a unicast message.
Abstract:
A method for configuring system information, a method for transmitting system information, and a method for transmitting resource ratio information are disclosed. A method for receiving system information elements includes receiving a find message including a fixed-size system information element from a base station, and receiving a second message including an variable-size system information element from the base station.
Abstract:
A method for efficiently performing an initial access in an MS in a multi-carrier broadband wireless access system is disclosed. The method includes scanning a plurality of carriers supported by a BS, and selecting one of the scanned carriers as a first carrier and receiving an SFH of the first carrier. The SFH of the first carrier includes at least one of a field indicating load status of the first carrier and recommended network entry carrier information including information about a second carrier in good load status.
Abstract:
A method for operating a plurality of carriers by a user equipment in a wireless communication system supporting a primary carrier and at least one secondary carrier, the method includes transmitting, to a base station, carrier capability information; receiving, from the base station, carrier configuration information, the carrier configuration information including an index of the at least one secondary carrier configured for the user equipment, the carrier configuration information being based upon the carrier capability information of the user equipment, the primary carrier being configured as a carrier for performing an initial network entry procedure; receiving, from the base station, a control channel including information regarding multi-carrier operation through the primary carrier; and transmitting, to the base station, traffic through one of the at least one secondary carrier based on the information regarding multi-carrier operation.