Telefonaktiebolaget Lm Ericsson (publ)

Unwired Planet, LLC

Anders Lamm

Torbjörn Wigren

Billy Hogan

Erik G Larsson

Magnus Johansson

Pär Ankel

Klas Johansson

Henrik Egnell

Jinhua Liu

Yi-Pin Eric Wang

Zhang Zhang

Hai Feng Wang

Ari Kangas

Patrik Torgny Karlsson

Magnus Nilsson

Fredrik Ovesjö

Peter Von Wrycza

Xinyu Gu

Karl Torbjörn Wigren

Ulf Skärby

Erik Geijer Lundin

Magnus Persson

Anders Hangkan Persson

Anders Hansson

Stefan Lindgren

Benny Bentland

Gunilla Sjöström

Tomas Svadling

Sten Sjöberg

Shawn Tsai

Maria Henriksson

Marc Mjögeman

Marc Mjogeman

Liina Savolainen

Shiau-He Shawn Tsai

The present disclosure relates to a CDMA communication node arrangement comprising at least two spatially separated antenna units, at least one radio unit and at least one control unit. Each antenna unit has at least one corresponding coverage area and is connected to the central unit. The control unit is arranged to alter transmitting properties of at least a first antenna unit, to a user terminal, such that more or less power is transmitted by the first antenna unit in a dedicated channel. The control unit is arranged to monitor received inner power control loop commands when at least a second antenna unit is communicating with the user terminal, and to determine whether said first antenna unit should start or stop communicating with the user terminal, or continue as before, based on how the inner power control loop commands respond. The present disclosure also relates to a corresponding method.

Radio link management in a combined cell

A method performed by a first network node of a wireless communication network for handling uplink signals sent by a UE. The wireless communication network comprises a serving network node responsible for transmitting downlink signals to the UE, and a non-serving network node capable of receiving uplink signals sent by the UE. The non-serving network node is the first network node and the serving network node is a second network node of the communication network, or vice versa. The method comprises receiving an uplink signal from the UE, measuring signal quality on the received uplink signal, and receiving signal quality information from the second network node regarding signal quality measured by the second network node on the uplink signal received by the second network node, to detect imbalances in experienced signal quality between the first network node and the second network node.

Methods and network nodes in a wireless communication network for handling of uplink signals sent by a user equipment

A radio base station and a method therein for scheduling an uplink radio resource to a first user equipment in a wireless communication system which employs CDMA are provided. The method includes measuring an Interference Suppression (IS) gain for each user equipment in a set of user equipments currently being served by the radio base station. The method further includes determining a user constellation pertaining to information regarding the different user equipments in the set of user equipments and their respective bitrates, and updating a table of IS gains with the measured IS gain in bins corresponding to the determined user constellation. The method further includes predicting a load based on at least the updated table, and scheduling the uplink radio resource to the first user equipment at least partly based on the predicted load.

Uplink scheduling when using interference suppression

A method in a network node (A-C,) comprises providing () to a user equipment (UE) (A-C) a dedicated physical control channel (DPCCH), the DPCCH having an associated first fractional dedicated physical channel (F-DPCH) for conveying transmit power control (TPC) commands to the UE for power controlling the DPCCH, the first F-DPCH having a first allocated slot format; providing () to the UE a dedicated physical control channel(DPCCH) (), the DPCCHcomprising an uplink control channel power controlled by the network node for communicating TPC commands to the network node, the DPCCHhaving an associated second F-DPCH for conveying transmit power control commands to the UE for power controlling the DPCCH, the second F-DPCH having a second allocated slot format different from the first allocated slot format; and communicating () to the UE an uplink TPC command on the second F-DPCH having the second allocated slot format.

System and method for improving uplink control channels for weak communication links

A radio base station (RBS) and a method performed by an RBS for scheduling uplink resources to at least one UE are provided. The RBS comprises at least two receiving antenna branches and the RBS is operable in a radio communication network. The method comprises receiving transmissions from the at least one UE by means of the at least two receiving antenna branches; and determining at least one parameter relating to signal quality of the received transmissions. The method further comprises determining a diversity gain of the at least two receiving antenna branches, wherein the diversity gain is determined based on the determined parameter(s); and scheduling uplink transmissions for the at least one UE based on the determined diversity gain.

Radio base station and a method therein for scheduling uplink resources

The embodiments herein relate to a method in a base station for transmitting an UpLink Transmit Power Control, UL TPC, command to a user equipment in a communications network. The base station obtains a measurement of a distortion of a signal received from the user equipment. The signal is associated with a power to be controlled. The base station determines that the signal is unreliable if the distortion measurement is above a threshold or determining that the signal is reliable if the distortion measurement is below the threshold. The base station transmits a first UL TPC command to the user equipment when the signal is determined to be unreliable or transmits a second TPC command to the user equipment when the signal is determined to be reliable.

Uplink transmit power control

A method for uplink channel estimation comprises providing of a channel state model in a channel estimator. An uplink radio signal of a present time slot is obtained in the channel estimator as well as a series of transmit power control commands issued for controlling a transmit power of the uplink radio signal. A delay between the time a transmit power control command is issued and the time that the transmit power control command is applied is estimated based on measurements of the particular received uplink radio signal. Channel states are adapted based on a transmit power control command compatible with the estimated delay. After the adaptation, channel states of the present time slot are estimated in the channel estimator, by tracking the demodulated uplink radio signal with the channel state model. A channel estimator performing such method is also described.

Channel estimation in wireless communication systems

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

Emergency or prioritized communications in a wireless communication network are handled during negotiation of access to the wireless communication network from a mobile station using dedicated emergency multiple-access sequences which are also used as communication division codes in communication with a base station of the network.

Admission control of emergency connections

The embodiments herein relate to a method in a base station for adjusting transmission power in a communications network. The base station determines a first number m; P of historical transmit power control, TPC, commands based on a signal power and an interference level. The base station determines a second number 2k; n+Q of current TPC commands based on the first number m; P of historical TPC commands, or based on the first number m; P of historical TPC commands and a third number n&#x2212;K of signal power and interference level pairs. The base station transmits a sequence of TPC commands comprising the first number of historical TPC commands and the second number of current TPC commands to the user equipment to adjust the user equipment's transmission power.

Method and device for transmission power control

The present invention relates to a solution for handling emergency or prioritized communication in a wireless communication network during negotiation of access to the wireless communication network from a mobile station using dedicated emergency multiple-access sequences which are also used as communication division codes in communication with a base station of the network.

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Mölndal, Sweden

Anders Lamm