Abstract: In a heterogeneous network environment where both high and low power nodes are sharing the same channel/frequency, explicit signaling in a downlink control message is used to select whether scheduling information SI is to be transmitted by a user equipment UE with a data payload or without a data payload. For the case where the selection is that SI is to be transmitted with a data payload, the downlink control message is used for the UE to select a transport format combination TFC for transmission of the SI with the data payload. Else for the case where the selection is that SI is to be transmitted without a data payload, the downlink control message is used for the UE to select transmit power for the transmission of the SI without the data payload.

Abstract: A method, apparatus and computer program product are provided in order to enhance network notification of secondary cell activation. In a first embodiment, the method includes receiving a secondary cell activation command, activating a secondary cell, and transmitting a PHR indicating activation of the secondary cell. In a second embodiment, the method includes receiving a secondary cell activation command, activating a secondary cell, and transmitting a signal indicating an expected time period until activation of the secondary cell. In a third embodiment, the method may optimize implicit SCell deactivation by receiving a secondary cell activation command, activating a secondary cell, receiving a PDCCH order for an uplink grant or a downlink assignment, and starting a secondary cell deactivation timer associated with the secondary cell in response to receiving the PDCCH order. A corresponding apparatus and computer program product are also provided.

Abstract: Systems and methods are disclosed herein relating to determining and using a reference Discontinuous Reception (DRX) cycle for a User Equipment device (UE) operating in a Dual Connectivity (DC) mode of operation. In some embodiments, a method of operation of a UE comprises obtaining a first DRX cycle for a Master/Main Cell Group (MCG) of the UE for a DC mode of operation and a second DRX cycle for a Secondary Cell Group (SCG) of the UE for the DC mode of operation and determining at least one reference DRX cycle for the UE. The method further comprises performing one or more radio measurements on one or more cells based on the at least one reference DRX cycle, the one or more radio measurements being one or more inter-frequency radio measurements and/or one or more inter-Radio Access Technology (RAT) radio measurements.

Abstract: Systems and methods relating to reconfiguration of a Carrier Aggregation (CA) enabled wireless device using a measurement gap are disclosed. In some embodiments, a method of operation of a CA enabled wireless device in a cellular communications network comprises reconfiguring the wireless device during a measurement gap such that the wireless device is enabled to receive a first set of one or more carriers after the measurement gap that are different than a second set of one or more carriers that the wireless device was receiving before the measurement gap. In some embodiments, the reconfiguration of the wireless device during the measurement gap enables reconfiguration of the wireless device for measurements on a Secondary Component Carrier (SCC) of a configured and deactivated Secondary Cell (SCell) of the wireless device without serving cell interruption.

Abstract: Measures for use in cell reselection in a cellular telecommunications network. A user equipment calculates a first cell ranking criterion for a serving cell of said user equipment and a second cell ranking criterion for at least one neighbour cell of said user equipment. Calculating at least one of the first cell ranking criterion for the serving cell and the second cell ranking criterion for the at least one neighbour cell comprises combining a measure of downlink-based coverage and a measure of uplink-based coverage for a respective cell. The user equipment performs cell reselection evaluation at least on the basis of the calculated first cell ranking criterion and the calculated second cell ranking criterion.

Abstract: Measures for mitigating interference in wireless communications of a user equipment comprising a plurality of radio transceivers. The user equipment determines that wireless communication using a given combination of uplink and/or downlink carrier bands associated with the plurality of radio transceivers causes an interference scenario. In response to the determination, the user equipment transmits, into a radio network, an indication of at least one preferred uplink carrier band for at least one of the plurality of radio transceivers. The indication transmitted by the user equipment is received at a network node in the radio network which may choose to carryout radio resource control in the radio network at least on the basis of the received indication.

Abstract: There are provided measures for enabling a sensor-assisted improvement of timing-based positioning accuracy. Such measures may exemplarily include measuring a first timing value for timing-based positioning calculation on the basis of a first positioning-related signal at a first time, measuring a second timing value for timing-based positioning calculation on the basis of a second positioning-related signal at a second time, deriving movement information indicative of a movement of an apparatus to be positioned during a time interval from the first time to the second time, and utilizing the measured first timing value, the measured second timing value and the derived movement information for timing-based positioning calculation relating to the apparatus to be positioned at a network side.

Abstract: A method for reselection of a cell in a wireless network comprises a) detecting that a level of a current serving cell is below a threshold defined for the current serving cell; b) determining the availability of a target cell at a lower or equal priority layer than the current serving cell; c) determining, for at least one available target cell at a lower or equal priority layer than the current serving cell, whether the available target cell has a level above a threshold defined for the available target cell; and d) selecting the available target cell if the determination at c) is affirmative; if the determination at c) is negative, using a hysteresis to select any target cell with a level better than the serving cell.

Abstract: A common control channel is monitored with a first and a second receiver. A target quality is determined for that channel, which may be signaled from a network. A quality parameter for the channel is determined from the first and second receivers, and compared to the target quality (directly or indirectly). Responsive to the comparing, one of the receivers is then operated in a reduced performance mode which consumes less power, for which several examples are disclosed. The comparison for switching from full to reduced and back to full may use different thresholds, which may be dynamically adjusted autonomous of the network to maintain the target quality. The common control channel may be one with which a broadcast traffic channel is associated. Methods, apparatus and computer programs embodied on a memory are detailed.

Abstract: User Equipment (UE) in receipt of a session start signal indicating a session frequency to use for a session along with other user equipment uses the session frequency until a session stop message is received and then changes to a frequency selected to avoid subsequent use of a same frequency used by the other user equipment. For instance, when the UE receives a Multimedia Broadcast Multicast Service (MBMS) session start signal and it contains a preferred frequency, the Radio Resource Control (RRC) layer of the UE could store the frequency of the serving cell for later reference. The UE then converges to the preferred frequency for the duration of the session. When the UE receives a session stop, RRC layer retrieves the previously stored information about the pre-session frequency and requests the physical layer (L1) to select a cell on the frequency where it was previously camped on.

Abstract: A transmitter is disclosed. The transmitter has an RF portion having an amplifier for amplifying a signal for transmission. The RF portion is fed by a baseband portion. The baseband portion comprises: means for generating a pair of in-phase (I) and quadrature-phase (Q) data signals; and a limiter arrangement for preventing the amplitude of both the I and Q data signals exceeding a pretermined level.

Abstract: A transmitter is disclosed. The transmitter has an RF portion having an amplifier for amplifying a signal for transmission. The RF portion is fed by a baseband portion. The baseband portion comprises: means for generating a pair of in-phase (I) and quadrature-phase (Q) data signals; and a limiter arrangement for preventing the amplitude of both the I and Q data signals exceeding a predetermined level.