摘要:
A method for transmitting common control information in a wireless mobile communication system is provided. The method includes transmitting common control information by a first Base Station (BS) to a second BS and broadcasting by the second BS the common control information received from the first BS. Accordingly, transmission of the control information by the second BS saves time and frequency resources in the communication system.
摘要:
A method for transmitting/receiving data in a communication system using multiple frequency bands. The transmission method includes fragmenting a desired transmission Service Data Unit (SDU) in units of Packet Data Units (PDUs); and transmitting the fragmented PDUs over at least two frequency bands among the multiple frequency bands. Each of the multiple frequency bands is supported by a system having backward compatibility with a legacy system. The reception method includes decrypting a wireless resource (MAP) allocated separately for each of the frequency bands to extract fragment information therefrom; and receiving PDUs over the frequency bands separately, and restoring the SDU according to fragment information corresponding to the corresponding frequency band.
摘要:
An apparatus and method for transmitting and receiving data in a communication system are provided. In the method, a BS selects a repeater group from among a plurality of repeater groups, for use in transmitting first data to an MS and transmits the first data to the MS according to the number of repeaters of the selected repeater group. The first data is different from data transmitted by the repeaters of the selected repeater group.
摘要:
For cooperative transmission in a broadband wireless communication system, an apparatus and operating method of a Base Station (BS) in a broadband wireless communication system are provided. The method includes receiving a cooperative transmission REQuest (REQ) message which includes at least one of information designating a cooperative Mobile Station (MS), a pilot pattern of the cooperative MS, a variable determining a permutation pattern, and an orthogonal code of the cooperative MS, from a control station, allocating a resource of a predefined Coordinated MultiPoint transmit/receive (CoMP) zone occupying part of a frame, to at least one cooperative MS designated by the cooperative transmission REQ message, and communicating with the at least one cooperative MS according a cooperative transmission scheme using the resource of the CoMP zone.
摘要:
An apparatus and method for controlling a transmit power of a sounding signal in a wireless communication system are provided. The method includes estimating a downlink Carrier to Interference and Noise Ratio (CINR) using at least one signal received from a Base Station (BS), determining a transmit power level for a sounding signal using a target CINR for the sounding signal, wherein the target CINR is determined based on the downlink CINR and multi-target CINR information, and transmitting the sounding signal according to the transmit power level.
摘要:
An apparatus and operation method of a Mobile Station (MS) for ranging in a broadband wireless access communication system includes receiving information for ranging code hopping from a Base Station (BS). The MS determines a hopping offset value that is a start of a ranging codes group using the information for ranging code hopping. The MS also determines a ranging codes group using the hopping offset value, and randomly selects at least one or more ranging codes among the determined ranging codes group and transmitting the selected ranging codes to the BS.
摘要:
An apparatus and operation method of a Mobile Station (MS) for ranging in a broadband wireless access communication system includes receiving information for ranging code hopping from a Base Station (BS). The MS determines a hopping offset value that is a start of a ranging codes group using the information for ranging code hopping. The MS also determines a ranging codes group using the hopping offset value, and randomly selects at least one or more ranging codes among the determined ranging codes group and transmitting the selected ranging codes to the BS.
摘要:
An apparatus and method for improving the reception performance of a Mobile Station (MS) in a multiple antenna system are provided. In an apparatus of a Base Station (BS) in the multiple antenna system, upon receipt of a request for interference cancellation for a first MS serviced by a neighbor BS, a channel estimator estimates a channel from the first MS and a channel from a second MS serviced by the BS. A beam coefficient generator generates a first beam coefficient based on channel estimates of the first and second MSs and a second beam coefficient based on the channel estimate of the second MS. An interference cancellation decider determines whether to perform interference cancellation for the first MS using the first and second beam coefficients.
摘要:
A broadband wireless communication system using a plurality of Frequency Allocations (FAs) is provided. A method for packet transmission of a packet of a transmitting end includes dividing one encoded packet into a plurality of parts, mapping a plurality the plurality of parts of the packet to the FAs through the plurality of different FAs transmission, when a re-transmission request is received, re-mapping the plurality of parts of the packet to the FAs such that at least one of the at least one of the plurality of parts is re-mapped to an FA that is different than an FA previously mapped thereto. Retransmitting the encoded packet by at least one of a number of subunits.
摘要:
An apparatus and method for allocating a frequency band to an MS in a cellular system with a frequency reuse factor of N are provided, in which a frequency allocator determines whether the MS receives data simultaneously from two BSs using neighboring FAs and allocates a frequency band to the MS according to the determination, and a subcarrier mapper maps the data to subcarriers according to the frequency band allocated to the MS.