摘要:
Provided is a method for receiving a notification indicating a completion of a network re-entry procedure by a Base Station (BS) in a communication system. The method includes transmitting, to a Mobile Station (MS), a RaNGing ReSPonse (RNG-RSP) message including information indicating whether to omit any of processes or transmission of messages for performing a network re-entry procedure with the BS; and receiving, from the MS, a notification indicating the completion of the network re-entry procedure.
摘要:
A method for allocating a channel quality information channel (CQICH) in a communication system is disclosed. After fast switching from a serving anchor base station (BS) to a target anchor BS, a mobile station (MS) detects absence of a CQICH allocated from the target anchor BS. Upon detecting the absence of the allocated CQICH, the MS sends a request for allocating the CQICH to the target anchor BS. Upon receiving the CQICH allocation request, the target anchor BS detects a need to allocate a CQICH to the MS.
摘要:
A method and apparatus for using a guard band as a data subcarrier in a communication system supporting frequency overlay are provided. In a method of operating mobile station for using a guard band as a subcarrier for signal transmission in a communication system supporting frequency overlay, the method includes searching for a first center frequency located at a position corresponding to an integer multiple of a subcarrier spacing, after searching for the first center frequency, receiving information indicating the numbers n1 and n2 of first additional subcarriers, and performing a first network entry process by using all subcarriers including the first additional subcarriers.
摘要:
An apparatus and method for canceling ISI in a broadband wireless communication system are provided. In a transmitter of the broadband wireless communication system, a controller acquires a CP length, a puncturing pattern, and a time sample interval according to a delay spread. A puncturer punctures coded data in the puncturing pattern. An IFFT processor IFFT-processes the punctured coded data and outputs sample data. A CP inserter generates an OFDM symbol by inserting a copy of a last part of the sample data before the sample data. Here, the length of the last part of the sample data is equal to the CP length. A D/A converter converts the OFDM symbol to an analog signal at a sampling rate determined by the time sample interval.
摘要翻译:提供一种用于在宽带无线通信系统中取消ISI的装置和方法。 在宽带无线通信系统的发射机中,控制器根据延迟扩展获取CP长度,穿孔模式和时间采样间隔。 穿孔者在穿孔图案中穿孔编码数据。 IFFT处理器IFFT处理穿孔编码数据并输出采样数据。 CP插入器通过在样本数据之前插入样本数据的最后一部分的副本来生成OFDM符号。 这里,样本数据的最后一部分的长度等于CP长度。 D / A转换器以由时间采样间隔确定的采样率将OFDM符号转换为模拟信号。
摘要:
An apparatus and method for transmitting and receiving a signal according to a change of downlink channel information by a mobile station in a broadband wireless access communication system. The method includes: detecting the change of the downlink channel information; receiving a report from a base station that there is data for the mobile station; and reporting the change of the downlink channel information to the base station, so that the base station and the mobile station have same downlink channel information.
摘要:
An apparatus and method for generating an RS SCH in a wireless communication system are provided, in which a base station checks a BS SCH sequence and a mask sequence, and generates an RS SCH sequence by XOR-operating the BS SCH sequence and the mask sequence.
摘要:
Apparatus and method for transmitting and detecting subchannel constitution scheme information in a multihop relay Broadband Wireless Access (BWA) communication system. The method includes determining a subchannel constitution scheme for fixing a start zone of BW-RS link according to channel information (e.g., channel condition information, interference, and mobility), transmitting determined subchannel constitution scheme information of the start zone using a FCH preamble, detecting physical channel signals of subchannel constitution schemes from the received FCH preamble, checking preset codes, and detecting the subchannel constitution scheme of the start zone using the detected physical channel signals of the subchannel constitution schemes and the codes. The subchannel constitution scheme of the BS-RS link can be adaptively applied based on the channel information.
摘要:
A signal transmission/reception apparatus of a communication system. The signal transmission apparatus receives an information vector, encodes the information vector into a structured Low Density Parity Check (LDPC) codeword using a structured LDPC coding scheme, and transmits the generated structured LDPC code to the signal reception apparatus. Then the signal reception apparatus receives a signal, and detects an information vector by decoding the received signal using a decoding scheme corresponding to the structured LDPC coding scheme used in the signal transmission apparatus.
摘要:
An apparatus and method for transparently relaying a signal using a plurality of frequency bands in a multi-hop relay cellular network are provided, in which a Relay Station (RS) communicates with a Base Station (BS) via a relay link in a first frequency band and communicates with a Mobile Station (MS) within the sub-cell of the RS via a sub-cell link in a second frequency band different from the first frequency band.
摘要:
A method and system for acquiring information about neighbor base stations (BSs) and neighbor relay stations (RSs) in a multi-hop relay broadband wireless access communication system are provided. In the method, a serving BS collects information about the neighbor BSs and the neighbor RSs, generates a message including the collected information, and transmits the message to a serving RS and an MSS directly communicating with the serving BS. The serving RS transmits the message to an MSS communicating with the serving BS via the serving RS.