摘要:
A method for performing link adaptation in association with scheduling a data channel for a cell in a base station of a cellular communication system, and an arrangement, suitable for performing such a method. The link adaptation method has link adaptation optimization purpose which is achieved by updating a link adaptation parameter on the basis of the load on the data channel and on the basis of the load of a control channel controlling the data channel in the cell. The method obtains a better trade-off between the spectral efficiency and the delay, due to re-transmissions.
摘要:
Method and arrangement in a base station for allocating resources to a user equipment. The method and arrangement comprises analyzing a period of time comprising a subset of the predetermined scheduling request opportunities, detecting a scheduling request from the user equipment, establishing priority level information from the detected scheduling request and the subset of the predetermined scheduling request opportunities, and allocating resources to the user equipment, according to the established priority level information. In addition, a method and arrangement in a user equipment for assisting the base station in allocating resources to the user equipment are described.
摘要:
A method for casting of metal. A mold is provided including two broad sides and two narrow sides. A molten metal is introduced into the mold. There is a meniscus at a top of the molten metal. Additional molten metal is supplied into the molten metal via a casting tube below the meniscus. At least one stirrer including an iron core and a coil applied around the iron core is arranged around the mold. A length of the iron core in relation to a length of the broad side of the mold is between 50% and 80% of the length of the broad side. An upper part of the iron core is positioned from 50 mm above to 195 mm below the surface of the meniscus. A magnetic field is applied to the molten metal with the at least one stirrer to stir the molten metal.
摘要:
A continuous casting device, including a mould, an electromagnetic device arranged outside the mould and arranged to provide an electromagnetic field acting on a melt in the mould, the electromagnetic device being supplied with electric current includes a base frequency and harmonics, and thereby providing a first electromagnetic field based on the base frequency and a second electromagnetic field based on the harmonics, and an inductive sensor, arranged at the mould for the purpose of sensing the position of a meniscus of the melt, and operating at frequencies corresponding to the harmonics. The continuous casting device includes at least one screen between the electromagnetic device and the sensor, and the screen is arranged so as to prevent the second electromagnetic field from disturbing the operation of the sensor but to permit the first electromagnetic field to act on the melt in the region of the meniscus.
摘要:
The invention relates to an interconnecting node for use in interconnecting a passive optical network (PON) and a copper wire xDSL access network, wherein said interconnecting node comprises an optical network unit (ONU) arranged to be connected to an optical line termination (OLT) over the PON network; and at least one xDSL access device connectable to at least one user end xDSL equipment over the copper wire xDSL access network. The interconnecting node is characterized in thatit further comprises a clocking interconnect between the ONU unit and the at least one xDSL access device arranged to distribute a clock signal obtained from optical network transmissions received in the ONU unit over the PON network to an timing reference input of the at least one xDSL access device. The invention also relates to a further interconnecting node, methods for use in interconnecting nodes, a central office optical network apparatus and an access network.
摘要:
A user equipment for obtaining data for observing performance related to Random Access in a cellular radio system is provided. The user equipment can connect to the system. In order to provide the network/system with data for observing the random access procedure the user equipment measures and stores data needed to compute measurements to be reported to the system. The user equipment further generates a measurement report, and transmits the measurement report based on a trigger event.
摘要:
A continuous casting device, including a mould, an electromagnetic device arranged outside the mould and arranged to provide an electromagnetic field acting on a melt in the mould, the electromagnetic device being supplied with electric current includes a base frequency and harmonics, and thereby providing a first electromagnetic field based on the base frequency and a second electromagnetic field based on the harmonics, and an inductive sensor, arranged at the mould for the purpose of sensing the position of a meniscus of the melt, and operating at frequencies corresponding to the harmonics. The continuous casting device includes at least one screen between the electromagnetic device and the sensor, and the screen is arranged so as to prevent the second electromagnetic field from disturbing the operation of the sensor but to permit the first electromagnetic field to act on the melt in the region of the meniscus.
摘要:
A base station supports a contention-based channel and a schedule-based channel. If too many mobile terminals simultaneously transmit on the contention-based channel, the base station schedules retransmissions to those terminals on the schedule-based channel. Supporting this, a terminal transmits a user transmission on the contention-based channel that includes both a data transmission and a reference signal. The terminal derives this reference signal by selecting one of a plurality of cyclic shifts (CSs). Correspondingly, the base station receives the user transmission and can determine the selected CS even if it is unable to demodulate the data transmission. The base station then determines a retransmission identifier (RTI) mapped to that CS, according to a mapping between CSs and RTIs, and sends scheduling information for any needed retransmission to the terminal by addressing that information to the RTI. Meanwhile, the terminal knows this mapping and monitors for scheduling information addressed to that RTI.
摘要:
A method and an arrangement (400, 600) in a first and second node, respectively, are provided. In a step (220), the first node (110) sends a plurality of resource units in a time period on a combined feedback and data channel. Said plurality of resource units comprises information about feedback data and user data. At least a minimum number of resource units are reserved for allocation by the user data.
摘要:
A control system for regulating the flow of liquid metal in a device for casting a metal. A detector measures a process variable. A control unit evaluates data from the detector. At least one process parameter is automatically varied in order to optimize casting conditions. The detector measures a characteristic of the meniscus at at least two points on the meniscus instantaneously throughout the casting process.