Telefonaktiebolaget Lm Ericsson (publ)

Magnus Persson

Björn Nordström

Jens Knutsson

Ying Sun

Torbjörn Wigren

Christian Skärby

Per Johan Beming

David Sandberg

Magnus C Frodigh

Klas Johansson

Eddie Corbett

Anders Christensson

Anders Lamm

Andreas Andersson

Göran Hansson

Sverker Magnusson

Peter Butovitsch

Magnus E Madfors

Tomas Sandin

Farooq U Khan

Dániel Pelyhe

Gert-Jan Van Lieshout

Amir Saadati

Liina Savolainen

Per Thoresen

Peter Erlandsson

Björn NORDSTRÖM

The present disclosure provides systems and methods for scheduling transmissions to and/or transmissions from user equipment. The user equipment communicates with a network via a first radio processing function (RPF) and a second RPF. The method includes determining a first aggregate bit rate for the UE. The method provides for sending to the first RPF first aggregate bit rate information (ABRI) for the UE. The first ABRI: 1) indicates that the first aggregate bit rate satisfies a bit threshold condition, 2) indicates that the first aggregate bit rate does not satisfy the condition, or 3) identifies the determined first aggregate bit rate for the UE.

Bit rate scheduling for a user equipment

A method performed by a node in a wireless communication network of estimating parameters used for determining a signal-to-interference measure at a communication device served by a base station, and a node performing the method. The method comprises acquiring an estimate of channel condition between the communication device and the serving base station, and between the communication device and at least one base station of a neighbouring cell, estimating the signal-to-interference measure using the estimate of the respective channel condition, and acquired output power and Physical Resource Block (PRB) utilization of each of the base stations, and receiving an indication of quality of a channel via which the communication device is served by the base station. The method further comprises determining whether a change in the estimate of the signal-to-interference measure is required based on the indication of channel quality, and updating the estimate of the channel condition.

Estimation of parameters used for determining a signal-to-interference measure at a wireless communication device

Embodiments herein relate to a method performed by a first transmission point () out of at least two transmission points for estimating a channel quality gain of a wireless device () served by the first transmission point () in a wireless communication network (). The first transmission point () coordinates transmissions with a second transmission point () out of the at least two transmission points in the wireless communication network (). The first transmission point estimates the channel quality gain based on whether a first cell specific reference signal, CRS, configuration of the first transmission point () is using radio resources for a first CRS that are colliding or not with radio resources used for a second CRS of a second CRS configuration of the second transmission point () in the wireless communication network (), and a utilization of frequency resources by the second transmission point ().

Computer program, computer-readable storage medium, first transmission point and method performed therein

A mobile terminal and a method at the mobile terminal in a wireless communications network of reporting cell measurements, as well as a network node and a method at the network node of requesting cell measurements. The method at the mobile terminal in a wireless communications network of reporting cell measurements comprises determining at the mobile terminal that a property of a channel established via a serving cell fails to comply with a quality criterion. In direct response to such determination, the mobile terminal determines a property of one or more channels of at least one neighboring cell, and reports the determined property of the channel of the serving cell and the determined property of the channel(s) of the neighboring cell(s) to a network node of the serving cell.

Fast UE measurement events activation

A method for selecting wireless communication devices for measurement configuration in a wireless communication network comprises a step of obtaining at least one report on signal strength and/or signal quality from a wireless communication device in the wireless communication network. The method further comprises a step of determining whether or not to select the wireless communication device for measurement configuration, where the measurement configuration comprises configuring the wireless communication device to provide measurement reports on received power from serving cells and neighbour cells in the wireless communication network, and where the step of determining is based on the at least one obtained report on signal strength and/or signal quality.

Measurement configuration of wireless communication devices

There is provided a device for filtering a stream of power control commands including power-up and power-down commands for uplink transmit power control in a wireless communication system. The device () includes a sequence tester () configured to determine whether a power-up command is immediately preceded by a sequence of consecutive power-up commands. The device also includes a command replacer () configured to replace, when it is determined that the power-up command is immediately preceded by a sequence of consecutive power-up commands, the power-up command with a power-down command.

Filtering a stream of power control commands

A method for power control stabilization in the uplink of a cellular CDMA communication system applying a fast inner loop power control comprises determining () of a radio frame based RoT value for a cell. A radio frame based SINR is determined () for individual UEs in the cell. The RoT value is compared () with a first threshold. Each frame based SINRs is compared () with a second threshold. The fast inner loop power control for a UE is broken () in dependence of the comparisons. The breaking comprises commanding () of a first number of consecutive power down commands to UEs having the frame based SINR above the second threshold for a RoT value above the first threshold and toggling () of power control commands for the subset of UEs during a second number of radio frames for a RoT value above the first threshold.

Slow congestion control

The downlink transmit powers of base stations involved in a diversity handover communication with a mobile station are controlled to minimize base station power &ldquo;drift.&rdquo; A downlink reference power level is determined based on detected, current transmit power levels of the diversity handover base stations. One or more power offsets is determined for one or more of the base stations based on signal quality measurements made by the mobile station. The reference power level and power offset(s) are used to selectively regulate an adjustment to the transmit power levels of the diversity handover base stations. The general reference power is transmitted at a first, relatively high frequency to the diversity handover base stations by embedding it in a user data frame. In that way, the signal processing load is kept to a minimum despite the higher transmission rate. Individual power offsets are sent to associated individual base stations in a control signalling channel identifying the one base station at a second frequency lower than the first frequency. The control channel signaling permits individual base station power offsets, but the lower frequency at which the offsets are transmitted reduces the associated signaling load.

Downlink transmit power synchronization during diversity communication with a mobile station

A radiocommunication system balances interference reduced by soft handoff with access network loading increased by soft handoff. When the access network loading exceeds some threshold for a particular transmission source, then the system limits or reduces that source's soft handoff connections with remote stations.

Method and system for soft handoff control based on access network capacity

Methods of controlling the power levels of transmitted signals in telecommunication systems are described. For example, a remote terminal measures the quality of a received signal, either by determining the frame error rate or the bit error rate, and reports its quality measurement to a network by sending a quality message. The network causes the signal transmitters to adjust their transmit power levels appropriately. Faster power control methods may be combined with slower power control methods for downlink (network to remote terminal) transmissions in various communications scenarios, such as soft hand-overs.

Transmit power control in a radio communication system

In spread spectrum communications, a method for allocating and re-allocating channelization codes to new and existing channels in a way that makes the maximum number of codes available at a given time for channels of different rates and different spreading factors. If re-allocations are not performed, a communication system employing the invention has a higher capacity than a system employing a random allocation strategy. The invention also reduces signaling overhead for re-allocations in comparison to a random allocation strategy because fewer re-allocations are necessary.

Code allocation in CDMA

A method of stabilizing a communication system having base stations and mobile stations using integrated control of both signal transmission power levels and signal congestion levels. In particular, the method includes measuring a quality such as a signal to interference ratio of a signal transmitted from a mobile station to a base station and measuring a total received signal power at the base station. The signal transmission power of the mobile station is changed based on comparisons of the measured signals with predetermined threshold values. When the measured total received signal power at the base station exceeds the corresponding predetermined threshold value, a congestion control algorithm is executed to reduce the signal congestion level.

Integrated power control and congestion control in a communication system

The power levels of signals transmitted by base stations in a communication are controlled. Power level control commands are transmitted from a remote station to base stations from which the remote station receives signals to control the power levels of the signals transmitted by the base stations. A determination is made whether the remote station simultaneously receives a first signal from a first base station and at least one second signal from at least one second base station that include substantially identical message information. The first and second base stations transmit first and second reports of power levels of the first and second signals, respectively, to the controller. The controller compares the first and second reports and transmits first and second commands for adjusting the power levels of the first and second signals to the first and second base stations, respectively. The power level control commands are transmitted from the remote station to the base stations less frequently during macrodiversity to reduce the signalling requirements between the controller and the base stations. Also, the step size of the adjustment of the power levels of the first and second signals by the controller is reduced during macrodiversity to reduce the signalling requirements. This power control method is particularly beneficial for a CDMA system.

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Sollentuna, Sweden

Magnus Persson