摘要:
An apparatus and method for relaying neighbor BS in a multi-hop relay broadband wireless access (BWA) communication system are provided. In the BWA communication system, a BS transmits a neighbor BS advertisement message to a relay station (RS) within a cell area of the BS. The RS configures a relay neighbor BS advertisement message by eliminating unavailable neighbor BS information from the neighbor BS advertisement message, and broadcasts the relay neighbor BS advertisement message in a cell area of the RS.
摘要:
A scanning apparatus and method in a multi-hop relay Broadband Wireless Access (BWA) communication system are provided. In the scanning method, a Mobile Subscriber Station (MSS) sends a scan request message requesting scanning to a Base Station (BS) via a Relay Station (RS). The BS sends a scan response message containing information for the scanning of the MSS to the MSS via the RS. The BS then sends a scan notify message indicating the scanning of the MSS to the RS.
摘要:
A system and method for state synchronization between a base station and a mobile station in a mobile communication system. A count value indicative of a state change of the base station is received. The received current count value is compared with a previous count value previously received and stored. If the current count value is different from the previous count value, the mobile station performs a network entry procedure with the base station.
摘要:
Disclosed is a system and method for allocating and indicating a ranging region in which a base station (BS) allocates and indicates a ranging region in a broadband wireless access (BWA) communication system. The method includes: ranging region allocation and change indication information in a first region of every downlink frame; determining whether to include information necessary for performing ranging in a broadcast message that is broadcast through a second region of every downlink frame according to the ranging region allocation and change indication information; and allocating a ranging region in an uplink frame according to the ranging region allocation and change indication information.
摘要:
Disclosed is a signal relaying method and system in a communication system including an mobile subscriber station (MSS), a base station (BS), a first relay station located between the MSS and the BS, a second relay station between the MSS and the BS are provided. In the system, the first relay station or second relay station relays signals between the BS and the MSS if the MSS is within the cell coverage of the BS, and the first second relay station relays signals between the BS and the MSS if the MSS is out of the cell coverage of the BS.
摘要:
Disclosed is a device and procedure for coding a block low density parity check (LDPC) code having a variable length. The a device and procedure includes receiving an information word; and coding the information word into a block LDPC code according to a first parity check matrix or a second parity check matrix depending on a length to be applied when generating the information word into the block LDPC code.
摘要:
A method for transmitting uplink control information in a communication system using an orthogonal frequency division multiple access (OFDMA) scheme is provided. A mobile station (MS) selects a target anchor base station (BS) with which the MS desires to communicate through a fast feedback channel, and transmits a codeword allocated to the selected target anchor BS to a current anchor BS. Upon receiving the codeword, transmitting to the MS, by the anchor BS, fast feedback channel allocation information for the selected BS corresponding to the received codeword. The MS switches to a new anchor BS corresponding to the fast feedback channel allocation information.
摘要:
Disclosed is a method for supporting a serving BS currently providing an MS with a communication service to perform handover in a broadband wireless access communication system which includes the MS, the serving BS and a target BS to which handover of the MS is directed. In such a method, the serving BS allocates the same sub-channel as that allocated to the MS in a specific time period by the target BS in the same time period, and information about the allocated sub-channel is transmitted to the MS.
摘要:
A method for transmitting/receiving operation mode information in a broadband wireless access (BWA) communication system is disclosed. A transmission side maps a predetermined preamble pattern to an operation mode, and upon a change in operation mode, transmits a preamble pattern corresponding to the changed operation mode. A reception side receives the preamble pattern, detects an operation mode and a preamble code mapped to the preamble pattern, and acquires information from a frame section received according to the operation mode.
摘要:
A system and method for state synchronization between a base station and a mobile station in a mobile communication system. A count value indicative of a state change of the base station is received. The received current count value is compared with a previous count value previously received and stored. If the current count value is different from the previous count value, the mobile station performs a network entry procedure with the base station.