Nokia Corporation

Broadcom Corporation

Nokia Technologies Oy

Nokia Solutions and Networks Oy

Nokia Siemens Networks Oy

Renesas Mobile Corporation

Beijing Xiaomi Mobile Software Co., Ltd.

Timo E Roman

Tommi Tapani Koivisto

Mihai Enescu

Mieszko Chmiel

Karol Schober

Timo Erkki Lunttila

Bernhard Raaf

Shuang Tan

Helka-Liina Määttänen

Lars Lindh

Esa Tapani Tiirola

Kari Pekka Pajukoski

Kari Juhani Hooli

Helka-Liina Määttanen

Tero Henttonen

Klaus Hugl

Peng Chen

Erlin Zeng

Peter Skov

Cassio Ribeiro

Kaj Tapio Jansen

Xiang Guang Che

Mika Petri Olavi Rinne

Xiangguang Che

Anders Nielsen

Tero Kuosmanen

Kari Pietikäinen

Chris Callender

Klaus Hugi

Mieszko Chimiel

In one aspect thereof the exemplary embodiments of this invention provide a method that includes, prior to confirmation that a network access node has correctly acquired capabilities of a user equipment, operating a user equipment with the network access node in accordance with a first rate matching mode and, only after confirmation to the user equipment that the network access node has correctly acquired capabilities of the user equipment, changing the rate matching mode to a second rate matching mode. In an embodiment the first rate matching mode comprises puncturing a downlink shared channel transmission with a set of resource elements, which may be at least one of reference symbols and muted resource elements, and the second rate matching mode comprises rate matching the downlink shared channel around those resource elements that are members of the set of resource elements. Also described are apparatus and computer readable storage medium storing program code that operate in accordance with the method.

Change of rate matching modes in presence of channel state information reference signal transmission

An arrangement is described for adapting outer loop precoder phase combiner in a radio communication system having coordinated multipoint transmission. In the arrangement ACK/NACK-message received as a response to a transmitted data packet is used for adapting the phase. When a NACK-message is received the phase may be adapted or it may be further determined if the error was due to error in channel code or due to destructive inter-point signal combining. If the error was due to destructive combining the phase is adjusted.

Radio communications

An apparatus and method for initialization and mapping of reference signals in a communication system. In one embodiment, the apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to generate a reference signal employable with a plurality of physical resource blocks corresponding to a bandwidth of a communication system, and allocate resource elements of an assigned physical resource block from the plurality of physical resource blocks to a user equipment. The memory and the computer program code are further configured to, with the processor, cause the apparatus to generate a dedicated reference signal for the user equipment by allocating elements of the reference signal in accordance with allocated resource elements of the assigned physical resource block.

Apparatus and method for initialization and mapping of reference signals in a communication system

A method, apparatus and computer program product are provided for conveying information regarding the antenna configuration and/or the transmission diversity scheme to a recipient, such as a mobile device. In particular, information regarding the antenna configuration and/or the transmission diversity scheme can be conveyed by masking, such as cyclic redundancy check masking, to provide information regarding the antenna configuration and/or the transmission diversity scheme. In this regard, a set of masks can be determined based upon hamming distances between the masks and bit diversities between the masks and where each of the masks within the set is associated with an antenna configuration and a transmission diversity scheme.

Method and apparatus for conveying antenna configuration information via masking

A method and apparatus are provided for an apparatus. The apparatus includes at least one memory including computer program code, and at least one processor. The at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to receive an indication of a set of codeword groups to be included in a codebook, and to select a precoding matrix index based on the indicated set of codeword groups in the codebook. The apparatus is also cause to transmit the precoding matrix index to a network node.

Codebook subset restriction based on codebook grouping

Methods for devices, devices and computer program products for devices relate to a communication module, arranged for packet based communication, and including a receiving module. The receiving module is arranged to receive a control message, wherein the control message includes a plurality of acknowledgement information items, wherein each of the plurality of acknowledgement information items are located in a preset portion of the control message, respectively. The device further includes a determination module, arranged to determine whether the received control message is intended for the device, a selection module, arranged to select, responsive to an affirmative determination result, at least one of the plurality of acknowledgement information items based on the preset portions, and an obtaining module, arranged to obtain control data contained in the selected at least one of the plurality of acknowledgement information items.

Method and apparatus implementing channel quality control

A method is provided that includes allocating a first subset of resource elements (REs) of a physical resource block (PRB) to a mobile terminal and associating one or more first demodulation reference symbols (DM-RS) ports therewith. The first subset of REs and the one or more first DM-RS ports have common interference characteristics, thereby providing for enhanced interference suppression. The method also includes causing transmission of the PRB for reception by the mobile terminal. Corresponding apparatus and computer program products are also provided.

Method and apparatus for providing enhanced interference suppression

An apparatus and method for selecting a beam group and a subset of beams in a communication system are disclosed. The method includes: measuring channel state information (CSI) on a downlink from a base station (); identifying a selected beam group out of a set of beam groups according to a wideband property of the CSI (); identifying a selected subset of beams in the selected beam group according to at least one subband (). Wherein the characteristic of the set of beam groups depends on a transmission rank and the number of beams in the selected subset of beams is equal to the transmission rank. The method further includes: generating encoded feedback information identifying the selected beam group and the selected subset of beams for each subband in a double codebook format (), transmitting the encoded feedback information to the base station. A computer program product comprising the computer program code which is configured to cause the apparatus to implement above operations is also disclosed.

Apparatus, method and computer program product for selecting beam group and subset of beams in communication system

Examples are described relating to methods, apparatus and computer programs for configuring a user equipment in a cellular wireless network. Certain exemplary methods involve receiving (), at the user equipment (), control information regarding one or more of a plurality of channel-state information (CSI) reference signals. The plurality of CSI reference signals are receivable by the user equipment () from one or more of a plurality of antenna ports that form part of the cellular wireless network, the plurality of CSI reference signal being associated with corresponding antenna ports. The control information is for use in configuration of the user equipment () and is received over a radio communications downlink from a node () in the cellular wireless network. If estimation of one or more radio communication channels at the user equipment () is configured () based on the received control information, improvements in demodulation and CSI feedback are achieved.

Methods, apparatus and computer programs for configuring user equipment

A method can include providing channel feedback to support efficient rank override For example, in such a method, a rank&#x2212;r precoder index corresponding to a rank&#x2212;r precoder is determined, and performance for each rank&#x2212;1 precoder within the rank&#x2212;r precoder is measured Based on the measured performance, a rank&#x2212;1 precoder that maximizes performance is selected.

Channel feedback to support efficient rank override

Growing community of inventors

Espoo, Finland

Timo E Roman