Telefonaktiebolaget Lm Ericsson (publ)

Optis Wireless Technology, LLC

Optis Cellular Technology, LLC

Johan Hultell

Johan Mikael Bergman

Erik G Larsson

Niklas Johansson

Qingyu Miao

Jinhua Liu

Bo Göransson

Paulson Angelo Vijay Silveris

Fredrik Ovesjö

Peter Von Wrycza

Mats Blomgren

Muhammad Ali Kazmi

SaiRamesh Nammi

Claes Tidestav

Nianshan Shi

Xinyu Gu

Cagatay Konuskan

Klas Johansson

Alessandro Caverni

Fredrik Bengt Ovesjo

Seungtai Kim

Lars Mårtensson

Lars MÅRTENSSON

Systems and methods for efficient signaling Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) for an uplink data transmission are disclosed. In some embodiments, a method of signaling HARQ-ACK feedback for an uplink data transmission sent from a wireless device to a radio network node comprises obtaining HARQ-ACK feedback for the uplink data transmission, encoding the obtained HARQ-ACK feedback on to an unused bit combination of a field in a downlink control channel, and transmitting the downlink control channel to the wireless device. Embodiments of the present disclosure enable wireless device power saving using positive HARQ-ACK feedback without increasing the static downlink control signaling overhead and without reducing coverage for downlink control information.

Uplink hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback for machine type communication (MTC)

Uplink HARQ-ack feedback for MTC

A NodeB for a WCDMA system, arranged to transmit instructions to a UE for the UE's uplink transmissions. The NodeB is arranged to transmit the instructions on a dedicated downlink physical channel which the NodeB is arranged to use for transmissions to a plurality of UEs and which comprises a plurality of radio frames, where each radio frame comprises a number of slots and each slot comprises a number of WCDMA symbols. The instructions to the UE comprise Transmit Power Commands as well as other instructions to the UE for the UE's uplink transmissions. The NodeB is arranged to use a first WCDMA slot format for the TPC commands to the UE and a second WCDMA slot format for the other instructions to the UE.

Device and method for WCDMA uplink transmissions

Methods and devices are described whereby a User Equipment (UE) and a base station are configured to align the uplink (UL) closed-loop transmit diversity (CLTD) status of the UE and the base station during a serving cell change involving a new base station.

Methods and devices for configuring uplink transmission diversity

A network node and a method performed by a network node for determining downlink transmission power for a downlink shared channel to be used in a Transmission Time Interval, TTI, by cells served by the network node in a wireless telecommunications network. The network node determines the downlink transmission power available to a cell for physical channels associated with the downlink shared channel based on downlink transmission power allocated in the cell to physical channels associated with a pilot signal downlink channel.

Network node and method for determining downlink transmission power for a downlink shared channel

Methods and apparatuses that facilitate power and quality control of uplink MIMO transmissions. A method in a NodeB comprises controlling transmission power of multiple pilot signals transmitted by a user equipment by using a single inner power control loop operating on at least one pilot signal of the multiple pilot signals. Some disclosed embodiments also relate to adjustment of a quality target applied by the single inner power control loop and to updating of a power offset for computing the number of bits that the user equipment can transmit on a stream that is associated with a pilot signal that is not power controlled by the single inner power control loop.

Methods and apparatuses for transmission power control

The present disclosure discloses a method in a wireless access network node for controlling a UE. The UE comprises at least two transmit antennas, and is capable of uplink transmit diversity. There is an antenna weight associated with each transmit antenna. First, the wireless access network node determines that the antenna weights of the user equipment may be controlled. Then, it creates a control signal that comprises control information and transmits it to the user equipment. The control information controls a UE autonomous selection of the antenna weights in the UE.

Uplink transmit diversity

It is presented a method for controlling uplink multiple-input-multiple-output, MIMO. The method is performed in a network node and comprises the steps of: determining an inter-stream interference between two uplink streams in MIMO, Multiple Inputs Multiple Outputs, transmission; and controlling a selection of E-TFC, Enhanced dedicated transport channel Transport Format Combination, in response to the determined interference.

Methods, network node, and user equipment for uplink multiple-input-multiple-output

Methods and devices are described whereby the UE and the Node-B are configured to align the UL CLTD status of the UE and the NodeB during serving cell change involving a new Node-B.

The present disclosure relates to a method () for transmission signal rank determination performed in a base station node () of a communication system (). The base station node () serves a first cell () and the first cell () has a neighboring cell () served by a neighboring base station node (). The base station node () is configured for multiple-input, multiple output communication with a first wireless device (). The method () comprises receiving (), from a node (); () of the communication system (), information related to the neighboring cell (), and determining (), based on the received information, a signal rank of a data transmission to the first wireless device () located within the first cell ().

Method, computer program and apparatus for transmission signal rank determination

A method () and apparatus () for selecting one of a plurality of antennas (), on a UE () implementing transmit diversity in a multi-carrier wireless communication system, for the joint transmission of two or more uplink signals, each modulated onto a different carrier frequency, such as when the carriers share a power amplifier (). The method () and apparatus () select an antenna () based on channel conditions associated with the carriers, even when prior art transmit diversity methods provide conflicting antenna selection indications.

Method and apparatus for uplink multi-carrier transmit diversity

A UE, for an HSPA WCDMA system, equipped with a first and a second transmit antenna, and arranged to use one or more sets of pre-coding weights for transmission. The UE is arranged to receive instructions from a NodeB on the set or sets of pre-coding weights to be used, and to transmit a first and a second pilot signal, and to use a first set of pre-coding weights for the first pilot signal and a second set of pre-coding weights for the second pilot signal, where the first set of pre-coding weights is the same as the UE uses for transmitting a first data stream, and to use different spreading codes for the first data stream and for the first pilot signal.

Device and method for HSPA WCDMA uplink pilots

In deployments where there is a mixture of new Node Bs capable of uplink multi-antenna transmission and legacy Node Bs not capable of uplink multi-antenna transmission some embodiments described herein enable a network node (e.g. a radio network controller, RNC) to configure an uplink control channel (e.g. dedicated physical control channel, DPCCH) to be decodable by both the new and the legacy Nodes when the UE operates in uplink multi-antenna transmission.

Methods and devices for configuring user equipments with multiple transmit antennas

A radio network controllerand a method therein for selecting two or more cellsfor simultaneous transmission of data to a user equipmentby at least one radio network nodecontrolling the two or more cells. The user equipmentis capable of Multi Point High Speed Downlink Packet Access, MP-HSDPA, transmissions. When a second cellthat is an active non High Speed Downlink Shared Channel (HS-DSCH) cell, has a better signal quality than a first cellthat is an active HS-DSCH cell, the radio network controllerselects the second cellto become an active HS-DSCH cell and to be one of the two or more cellsfor simultaneous transmission of data to the user equipment

Growing community of inventors

Solna, Sweden

Johan Hultell