摘要:
Provided is a method for determining handover of a mobile station by a serving base station in a mobile communication system. The method includes receiving traffic quality information from the mobile station; determining whether the traffic quality information satisfies a preset setting condition; if the traffic quality information satisfies the setting condition, sending a request for pilot signal strength measurement for the serving base station and adjacent base stations to the mobile station; receiving pilot signal strengths of the base stations, reported by the mobile station; determining whether there is a corresponding base station whose pilot signal strength exceeds the pilot signal strength of the serving base station; and determining handover of the mobile station to the corresponding base station.
摘要:
Provided is an apparatus and method for simultaneously receiving data signals of two adjacent frequency allocation (FA) in a cellular environment. When there is another base station using an adjacent FA to an FA of the base station, a subcarrier mapper maps control information to subcarriers of predetermined sections such that a mobile station simultaneously receives data signals of the adjacent FAs. An inverse fast Fourier transform (IFFT) processor IFFT-processes data mapped to the subcarriers. Because two different BSs transmit the same data through independent paths, the mobile station can obtain a macro diversity gain. Also, it is possible to balance the loads of the two BSs.
摘要:
Disclosed is a method for determining handover of a mobile station by a mobile station in a mobile communication system. The method includes measuring a downlink reference signal intensity of a serving base station; determining to perform scanning for measurement of reference signal intensities of the serving base station and neighbor base stations, when the measured downlink reference signal intensity of the serving base station is less than a reference value, negotiating with the serving base station for a scanning period and the number of scanning repetitions, measuring the reference signal intensities of the serving base station and the neighbor base stations, and resetting the reference value when a reference signal intensity of the serving base station is greater than or equal to reference signal intensities of neighbor base stations.
摘要:
Provided are an apparatus and a method for performing a handoff in a broadband cellular communication system with a frequency reuse factor of N by using both of two neighboring frequency allocations. The method includes determining, if a mobile station receives a signal from a second base station during communication with a second base station, whether frequency allocations of the two base stations are adjacent to each other, measuring and comparing signal strengths of the two base stations if the frequency allocations are adjacent to each other, sending a handoff request to the first base station if the signal strength of the first base station is less than or equal to the signal strength of the second base station, and simultaneously receiving signals of the two frequency allocations by simultaneously allocating portions of the frequency allocations to the mobile station according to the handoff request.
摘要:
Apparatus and method for simultaneously selecting two cells in a broadband cellular communication system with a frequency reuse factor of N. Adjacent cells are searched and the RX power strengths of the adjacent cells are measured. Cells with RX power strengths greater than a predetermined value are selected among the adjacent cells. Two cells are selected among the selected cells and the FAs and RX power strengths of the two cells are compared. If the two cells have adjacent FAs and/or similar RX power strengths, the two cell are selected to perform communication. The apparatus and method simultaneously receives data signals from two cells with adjacent FAs in a cellular environment with a frequency reuse factor of N, by sharing the adjacent FAs.
摘要:
A method is provided for transmitting/receiving data in a communication system. The method includes determining, when data to be transmitted to at least one Mobile Station (MS) is generated, a region where an MS that receive the generated data among the at least one MS is located, allocating resources of a data transmission region divided into a first region and a second region to the MS that receive the generated data according to the determination result, including the generated data in a region where the resource is allocated, and including, in a MAP message region, resource allocation information of the region where the data is included and information on an MS that receive the data included in the resource-allocated region, and transmitting, to the MS, a frame including the region in which the generated data is included, and the MAP message region.
摘要:
A method for allocating resource in a communication system. The resource allocation method includes dividing a data transmission region into a first region and a second region; allocating resource of the first region when a first Mobile Station (MS) among MSs is an MS located in a non-interference region; and allocating resource of the second region when a second MS among the MSs is an MS located in an interference region.
摘要:
A method is provided for transmitting/receiving data in a communication system. The method includes determining, when data to be transmitted to at least one Mobile Station (MS) is generated, a region where an MS that receive the generated data among the at least one MS is located, allocating resources of a data transmission region divided into a first region and a second region to the MS that receive the generated data according to the determination result, including the generated data in a region where the resource is allocated, and including, in a MAP message region, resource allocation information of the region where the data is included and information on an MS that receive the data included in the resource-allocated region, and transmitting, to the MS, a frame including the region in which the generated data is included, and the MAP message region.
摘要:
A method for allocating resource in a communication system. The resource allocation method includes dividing a data transmission region into a first region and a second region; allocating resource of the first region when a first Mobile Station (MS) among MSs is an MS located in a non-interference region; and allocating resource of the second region when a second MS among the MSs is an MS located in an interference region.
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.