摘要:
The present invention proposes an operation mode control for a power amplifier of an output stage (1) for portable electronic equipment for wireless communication (50). The operation mode control comprises means (S0) for receiving a command that requests a change of the output power of power amplifier (2), means (S1, 55) for identifying a current operation mode of the power amplifier, means (S2) for determining if the power amplifier may be operated in a further operation mode different to the current operation mode for the output power requested by the command, means (S3, 57) for assessing the history of preceding output power requests, and means (S6, 58) for evaluating from the assessed history of preceding output power requests a trend value that indicates the likeliness of a future output power of the output stage to remain for a defined time period within a range enabling an operation of the power amplifier also in the further operation mode. The operation mode is hereby changed over from the current operation mode to the further operation mode on condition that the evaluated trend value indicates a sufficient likeliness for a future output power to remain for the defined time period within a range enabling an operation of the power amplifier in the further operation mode, and on condition that the further operation mode enables a more energy-efficient operation of the power amplifier than the current operation mode.
摘要:
A method and system (200) for dynamic rate switching via medium access channel layer signaling (208) is disclosed, wherein data rates for high data rate channels are automatically shifted up or down based on a predetermined metric. In a preferred embodiment, data rates are automatically shifted up or down based on transmit channel gain required to maintain a required signal to noise ratio.
摘要:
To increase throughput efficiency and attain a higher achieved bit rate for data transmissions over a high speed shared channel, a variable transmit power increase factor is used to control the maximum rate at which the power at which data is transmitted over the high speed shared channel can increase. In one non-limiting implementation, the power increase factor F is varied with the current total downlink transmitted power available for high speed downlink transmission. For example, when the available high speed shared channel power is large, the variable transmit power increase factor assumes a more conservative value, e.g., a smaller F value, at the beginning of the high speed downlink transmission, and then a more liberal value, e.g., a larger F value, later during the high speed downlink transmission.
摘要:
In a telecommunication system (10) for providing multimedia broadcast services to many user equipments (40-45), a physical random access channel (39) is provided for uplink transmission of power control information from the user equipments to a radio site (30, 35). Based upon a comparison of signal-to-noise ratios (53) each particular user equipment sends (55) or inhibits from sending a power control signal to the radio site to which it is coupled. When the radio site of the telecommunication system detects a power control signal (73), the radio site adjusts the transmission power of a broadcast channel intended for reception by multiple user equipments (75) to be incrementally greater than the previous power (81). For lack of detection of a power control signal, adjusts the transmission power of a broadcast channel to be incrementally lower than the previous power.
摘要:
A controller (102) in a fixed network of a wireless data communication system (100) transmits an indication that a diversity transmission of the information stream is available. When predetermined capabilities of a user equipment (112) and the fixed network are sufficient to allow soft combining of a primary transmission and the diversity transmission of bits of the information stream in the user equipment, the controller further transmits primary and diversity transmissions in a manner that facilitates soft combining in the user equipment, and transmits a group identity of the information stream to indicate that the information stream is in the primary and diversity transmissions.
摘要:
The invention disclosed a method of power control under the multiple time slot power control pattern in the CDMA system, the method pre-stored two full '1' and full '0' symbols encoded corresponding to TPC command on the receiving end and sending end respectively, and it determined either to send original TPC command or send the encoded TPC command based on that if current TPC command were same with previously one TPC command; the sending end then determined corresponding power adjusting manner based on the coincidence relation between the combination information of N received TPC command data and said symbol encoded. The present invention used the symbol encoded instead of the full '0' and full '1' TPC command, enhanced the reliability of the TPC command, in particular, enhanced the reliability of the full '0' and full '1' TPC command, improving the performance of power control.
摘要:
The present invention improves a system capacity and satisfaction rate with a quality of service in packet communications performed through a radio link established between a transmitting station (BS2) and a receiving station (MS2) by dynamically limiting transmission power of packets in the transmitting station and keeping an increase of an interference level in the receiving station, which belongs to another cell, within a TPC margin. The present invention includes a resource allocator configured to set transmission power of packets in a next step period, by use of transmission power of packets in a preceding step period (slot) and an interference level of the receiving station (MS2).
摘要:
A method, components and a system are provided for implementing power control for wireless communication transmissions that provides, inter alia, a remedy for the mismatch of initial transmission power (312) for NRT data by estimating a bias error (324) based and adjusting the transmission power by a compensation amount for an averaged bias error estimation (323) over all data set transmissions, such as sequential Temp-DCH allocations in a UMTS system. An alternative approach for a UMTS system estimates the bias error at a RNC based on an averaged transmit code power measurement by a base station (310) and applies a bias error compensation to the initial DL transmit power at the RNC.
摘要:
The present invention relates to an adaptive step size method for power control in wireless communication systems and a system for the same. The method includes the steps: obtaining the power control information whose number is previously set in previous power control cycle and that in current power control cycle; Determining the power control step size in current power control cycle according to the obtained power control information whose number is previously set in previous power control cycle and that in current power control cycle. Employing the method to determine a suitable step size in current PC cycle, we can overcome the defect that the change of the PC step size in current wireless communication system is a fixed value, thereby make the power change more smooth, and ensure that wireless communication holds better communication quality.