Abstract:
A device for optimizing a data compression level when processing a Hybrid Automatic Repeat reQuest (HARQ) signal includes a combiner which receives a log likelihood ratio (LLR) signal, determines whether the LLR signal is a new or retransmitted signal, and generates a composite signal by combining the LLR signal with a related signal received and previously stored when the LLR signal is the retransmitted signal; a compression level decision unit which calculates a first compression level based on quality of a received signal, calculates a second compression level based on an available memory size, and decides a final compression level according to the first compression level and the second compression level; a compressor which compresses the LLR signal according to the final compression level; a HARQ memory which stores the compressed signal; and a decompressor which decompresses a signal read from the HARQ memory.
Abstract:
Apparatuses, methods, and systems of measuring received power are described, including apparatuses, methods, and systems which can measure received power, even when the subcarrier offset of the measurement bandwidth is different from the subcarrier bandwidth of the cell bandwidth. In one method, the first received power of a plurality of Resource Blocks (RBs) received from a second Base Station (BS) are measured based on first channel state information received from a first BS. Based on the determination whether a value of an index included in the first channel state information is larger than a predetermined value, at least one of second received power, third received power, and fourth received power of the plurality of RBs is measured by using second channel state information including an alternative index determined based on the first channel state information based on a result of the determination.
Abstract:
A device and method for selectively using an internal memory and an external memory when processing Hybrid Automatic Repeat reQuest (HARQ) data are provided. The device includes a combiner configured to receive a first HARQ burst; an internal memory positioned within the device; and a memory selector configured to compare a size of the first HARQ burst with a predetermined threshold, to select one of the internal memory and an external memory positioned outside the device according to a comparison result, and to store the first HARQ burst in a selected memory. At least one among a size of the internal memory and the threshold is determined based on a characteristic of a first service type that has been predetermined.
Abstract:
A device and method for selectively using an internal memory and an external memory when processing Hybrid Automatic Repeat reQuest (HARQ) data are provided. The device includes a combiner configured to receive a first HARQ burst; an internal memory positioned within the device; and a memory selector configured to compare a size of the first HARQ burst with a predetermined threshold, to select one of the internal memory and an external memory positioned outside the device according to a comparison result, and to store the first HARQ burst in a selected memory. At least one among a size of the internal memory and the threshold is determined based on a characteristic of a first service type that has been predetermined.
Abstract:
A device for optimizing a data compression level when processing a Hybrid Automatic Repeat reQuest (HARQ) signal includes a combiner which receives a log likelihood ratio (LLR) signal, determines whether the LLR signal is a new or retransmitted signal, and generates a composite signal by combining the LLR signal with a related signal received and previously stored when the LLR signal is the retransmitted signal; a compression level decision unit which calculates a first compression level based on quality of a received signal, calculates a second compression level based on an available memory size, and decides a final compression level according to the first compression level and the second compression level; a compressor which compresses the LLR signal according to the final compression level; a HARQ memory which stores the compressed signal; and a decompressor which decompresses a signal read from the HARQ memory.
Abstract:
Apparatuses, methods, and systems of measuring received power are described, including apparatuses, methods, and systems which can measure received power, even when the subcarrier offset of the measurement bandwidth is different from the subcarrier bandwidth of the cell bandwidth. In one method, the first received power of a plurality of Resource Blocks (RBs) received from a second Base Station (BS) are measured based on first channel state information received from a first BS. Based on the determination whether a value of an index included in the first channel state information is larger than a predetermined value, at least one of second received power, third received power, and fourth received power of the plurality of RBs is measured by using second channel state information including an alternative index determined based on the first channel state information based on a result of the determination.
Abstract:
Methods and apparatuses are provided for driving a modem. A Channel Impulse Response (CIR) is computed through channel estimation. An estimation time position is estimated by applying a weighted-average method to the CIR. A time offset is measured by comparing the estimation time position with a reference time position. The time offset is compensated for.
Abstract:
Methods and apparatuses are provided for driving a modem. A Channel Impulse Response (CIR) is computed through channel estimation. An estimation time position is estimated by applying a weighted-average method to the CIR. A time offset is measured by comparing the estimation time position with a reference time position. The time offset is compensated for.