摘要:
Techniques for performing power control of multiple channels sent using multiple radio technologies are described. In one aspect, a reference power spectral density (PSD) level is determined, a transmit PSD delta is adjusted, and then a transmit PSD of a data channel is determined based on the reference PSD level and the transmit PSD delta.
摘要:
A wireless device may determine a coverage enhancement (CE) level (or coverage extension) by attempting to decode a received broadcast signal. The wireless device may attempt to decode a portion of the broadcast signal using a CE level that is less than the CE level of the broadcast. If the decoding attempt is successfully, the CE level may be declared as an operating CE level. If decoding is unsuccessful, the CE level may be increased decoding retried. The wireless device may continue to test-decode the broadcast signal at new (e.g., increasing) CE levels until a CE level is sufficient for a decode and is declared the operating CE level of the wireless device. In some cases, the wireless device test-decodes a broadcast channel after selecting a CE level based on a path loss measurement of a downlink signal (e.g., reference signal).
摘要:
A method and apparatus are described including receiving, by a transmitter, a report from an associated client, setting and using a downlink transmit power level responsive to the report for data transmissions to the associated client, determining a downlink data loss rate and adjusting the downlink transmit power level responsive to the downlink data loss rate, wherein said report includes received signal strength, client transmit power level and one of link margin and receiver sensitivity. Also described are a method and apparatus including receiving, by a receiver, a request for a report, transmitting the requested report, receiving an instruction to use an uplink transmit power level, setting and using the uplink transmit power level, determining an uplink data loss rate and adjusting the uplink transmit power level responsive to the uplink data loss rate, wherein said report includes said received signal strength, client transmit power level and one of said link margin and said receiver sensitivity.
摘要:
A terminal device controls transmission power using a TPC command that is included in a DCI format 3. In the terminal device, in a case where CRC parity bits that are attached to the DCI format 3 are scrambled with a first RNTI, timing when the TPC command is applied is based on a first uplink-downlink configuration, and in a case where the CRC parity bits that are attached to the DCI format 3 are scrambled with a second RNTI, timing when the TPC command is applied is based on a second uplink-downlink configuration.
摘要:
A resource allocation method and a base station in an orthogonal frequency division multiplexing system are used by a base station to allocate a resource. The method in embodiments of the present invention includes: acquiring, by the base station, channel state information CSI of a current scheduling timeslot; obtaining a compensation factor according to the CSI and a preset packet error ratio, where the compensation factor is a value corresponding to the preset packet error ratio in an inverse cumulative distribution function of a non-central chi-square random variable and a non-central parameter; replacing the CSI with the compensation factor, and determining a functional relationship between rate and power of sending data by the base station if a packet error ratio of the base station is less than or equal to the preset packet error ratio; and determining, according to the functional relationship and a generalized dynamic back pressure algorithm, the rate and total power of sending data by the base station, so as to minimize the total power of the base station. Through the embodiments of the present invention, an impact on the packet error ratio caused by inaccuracy of non-ideal CSI can be effectively reduced, and the rate and the power of sending data are determined on the basis of considering a power-time delay trade-off relationship when the base station sends data, thereby reducing total power consumption.
摘要:
A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.
摘要:
A method of controlling power in a transmitter in communication with a receiver in a wireless communication network is disclosed. The method comprising measuring a value of a first metric of signals received in the receiver, the first metric usable to generate a power control command; determining a measurement error of the first metric; generating the power control command based on the measured value of the first metric if the measurement error of the first metric does not exceed a threshold; and sending the power control command from the receiver to the transmitter.
摘要:
A terminal device controls transmission power using a TPC command that is included in a DCI format 3. In the terminal device, in a case where CRC parity bits that are attached to the DCI format 3 are scrambled with a first RNTI, timing when the TPC command is applied is based on a first uplink-downlink configuration, and in a case where the CRC parity bits that are attached to the DCI format 3 are scrambled with a second RNTI, timing when the TPC command is applied is based on a second uplink-downlink configuration.