Abstract:
Embodiments relate to a base station (10) arranged to order a mode of multiple modulated data streams communication of a user equipment (20) in a communications network, comprising transmitting arrangement (141a-141i), receiving arrangement (143a-143j) and a control unit (17, 12, 16) arranged to determine a mode of multiple modulated data streams communication of the user equipment based on a parameter relating to a capacity of the communications network, and to transmit over the transmitting arrangement (141a-141i) an order to the user equipment indicating the determined mode of multiple modulated data streams communication of the user equipment.
Abstract:
A method in a first node for determining a round trip time of a signal sent between the first node and a second node includes sending a first signal to the second node and receiving a second signal, corresponding to the sent first signal. The second signal is sent from the second node as a response to the sent first signal. The method also includes computing the round trip time of the signal and sending the computed round trip time to the second node.
Abstract:
Systems and methods according to these exemplary embodiments provide for network control of interference associated with uplink transmissions by user equipments, UEs, operating in a random access state, e.g., the CELL_FACH state. A radio network controller, RNC, can determine, and then transmit, a limitation on uplink transmissions for such UEs, e.g., a maximum transport block size, TBS.
Abstract:
Methods and apparatus for determining a position estimate for a base station transceiver node in a wireless communication system are disclosed. Angle-of-arrival and/or timing advance measurements corresponding to transmissions received from mobile stations for which geographic locations are already known are combined with known locations for the mobile stations to estimate the position of the base station receiving the transmissions. This estimated base station position may be used, for example, in subsequent positioning of mobile stations for which locations are not already known, such as mobile stations not equipped with GPS technology. The estimated base station position may also be used to update a database of base station coordinates for the wireless network.
Abstract:
The present invention relates to methods and apparatus in a RBS and a UE for reference signal (RS) measurements in an OFDM system, that enable having a configurable RS transmission bandwidth which is smaller than the system bandwidth. This allows for better interference coordination of RS, which in turn improves the UE RS measurements used for different services such as positioning. The RBS retrieves the RS transmission bandwidth, determines a RS measurement bandwidth based on this RS transmission bandwidth, and transmits the determined bandwidth to the UE. The UE receives the RS measurement bandwidth and measures the RS in a bandwidth determined based on the received measurement bandwidth and the UE capability.
Abstract:
When a high SIR can be achieved for downlink data transmission, for example in a MIMO system, or when higher order modulation, such as 64 QAM, can be used, it is desired to measure the instantaneous downlink channel quality indicator (CQI), and report the measured CQI to the network using the same number of bits as when a lower SIR can be achieved. In order to do this, a true CQI is derived based upon at least one network controlled parameter and a measured channel quality parameter; and the true CQI value is scaled to a new CQI value such that the new CQI will fall within a specified range of CQI values; so that the new CQI achieved by scaling the derived CQI value can be reported with every CQI value over the entire reporting range requiring the same number of bits.
Abstract:
The present invention relates to methods and arrangements for scheduling of positioning channels and traffic in order to recover a sufficiently perfect orthogonality including scheduling tasks for the downlink and uplink direction. A scheduling manager co-ordinates the scheduling and measurement timing of first and second positioning schedulers that, respectively, allocate uplink and downlink radio resources.
Abstract:
Systems and methods according to these exemplary embodiments provide for network control of interference associated with uplink transmissions by user equipments, UEs, operating in a random access state, e.g., the CELL_FACH state. A radio network controller, RNC, can determine, and then transmit, a limitation on uplink transmissions for such UEs, e.g., a maximum transport block size, TBS.
Abstract:
Disclosed are systems and methods that allow the a mobile communications device to perform inter-frequency and inter-RAT measurements while receiving MBMS data. As disclosed, control of measurement occasions are decided on by the UE using Discontinuous Reception during Forward Access Channel reception. Using aspects of the disclosed embodiments, each UE individually decides when to perform inter-frequency/RAT measurements (provided performance requirements on cell reselection are met). Outer coding procedures may then be performed to recover data lost during the measurements.
Abstract:
In a synchronization scheme, for example for establishing a channel in a UMTS radio communication system, when a user device (or user equipment, UE) such as a mobile terminal is establishing a channel with a network, the user device transmits signals on the uplink DPCCH, and the power of these signals is ramped up from a calculated initial power level until the transmission is detected by the receiver, i.e. until the receiver has obtained synchronization to the uplink signal.