Patent application number | Description | Published |
20090061886 | System and Method for Activity-Based Power Control Target Adjustments in a Wireless Communication Network - The teachings presented herein provide, among other things, improved power control stability and increased system capacity in a wireless communication network by raising signal quality targets for mobile stations engaged in scheduled uplink data transmissions and lowering those signal quality targets at the end of such transmissions. As one example, the teachings herein are applied to the Enhanced Uplink (EUL) in a Wideband CDMA (WCDMA) network. In that context, the target received signal quality (e.g., SIR) for a given mobile station's Dedicated Physical Control Channel (DPCCH) signal is raised for times when the mobile station is engaged in a scheduled data transmission via its Enhanced-Dedicated Physical Data Channel (E-DPDCH), and lowered at other times. Doing so prevents the power control loop from “chasing” the potentially dramatic changes in mobile-specific interference conditions that arise in a scheduled uplink environment. | 03-05-2009 |
20090190485 | Method of Closed Loop Power Control Adjusted by Self-Interference - A method and apparatus for controlling the transmit power of a mobile device in a mobile communication network takes the level of self-interference into account to perform inner-loop power control. For normal inner-loop power control, a signal quality estimate is compared to a signal quality target and power control commands are generated based on the comparison. When self-interference is the dominant impairment in the received signal, a “fast break” is introduced to change inner-loop power control command generation. | 07-30-2009 |
20090291642 | Systems and Methods for SIR Estimation for Power Control - Systems and methods according to these exemplary embodiments provide for methods and systems for improving the signal-to-interference-plus-noise ratio (SIR) estimation between a mobile communications device and a base station (BS) for improving power control. A first SIR estimate is generated based on signals received on at least a first channel and a second SIR estimate is generated based on signals received on a second channel. A correction factor for the second SIR estimate is generated based on at least the first SIR estimate, and the second SIR estimate is adjusted with the correction factor. The first SIR estimate can, optionally, be generated using channel coefficients generated from signals received on both the first channel and the second channel. | 11-26-2009 |
20100022284 | Power Level of Transmitted Control Channel Symbol - Channel estimation accuracy is improved by adjusting the power level of a physical control channel allocated to a receiver based on the transmission rate and/or transport format of a corresponding physical data channel allocated to the same receiver. The physical control channel may be a DPCCH, E-DPCCH or other type of physical control channel allocated to a receiver for facilitating uplink or downlink communication. Regardless, the control channel power level is optimized for channel estimation as a function of data transmission rate and/or transport format. In one embodiment, control channel symbols are transmitted for use in channel estimation by adjusting the power level of a physical control channel allocated to a receiver based on the transmission rate and/or transport format of a physical data channel allocated to the receiver ( | 01-28-2010 |
20100220657 | METHOD AND ARRANGEMENT RELATING TO COMMUNICATIONS NETWORK - The present invention relates to a method and arrangements in a communications system enabled for transmission of several data streams to or from different receivers ( | 09-02-2010 |
20100246701 | Fast Random Access for an Enhanced Uplink Dedicated Channel - The present invention relates to fast random access methods and arrangements for the enhanced uplink dedicated channel of E-UTRAN (Evolved Universal terrestrial radio access network). A user equipment (UE) being in a low activity state sends a random access request comprising a preamble on a physical random access channel (PRACH) to a NodeB. The NodeB receives the request and sends in response to the received random access request a response comprising information associated with detection of the preamble on an acquisition indicator channel (AICH). The response comprises further in an extension of the AICH an indication of an action to be taken by the UE. In an embodiment of the present invention the action is to access the E-DCH and the response comprises configuration parameters to the E-DCH. | 09-30-2010 |
20100298021 | Method and Apparatus for Uplink Power Control During Soft Handover - The present invention provides a solution for maintaining a reliable power control in a telecommunications network during soft handover between a serving and non serving base station when a dedicated physical control channel power is boosted due to an increased data rate. | 11-25-2010 |
20110176518 | Estimation of Signal to Interference Ratio | 07-21-2011 |