Broadcom Corporation

Nokia Corporation

Avago Technologies General IP (singapore) Pte. Ltd.

Nokia Solutions and Networks Oy

Nokia Technologies Oy

Beijing Xiaomi Mobile Software Co., Ltd.

Avago Technologies International Sales Pte. Limited

Shuang Tan

Erlin Zeng

Tommi Tapani Koivisto

Mihai Enescu

Chunyan Gao

Timo E Roman

Haiming Wang

Wei Bai

Helka-Liina Määttänen

Wei Hong

Kari Pekka Pajukoski

Jing Han

Timo Erkki Lunttila

Kari Juhani Hooli

Helka-Liina Määttanen

Na Wei

Peter Skov

Xiang Guang Che

Chun Yan Gao

Tero Kuosmanen

Kari Pietikäinen

Tero Heikki Petteri Kuosmanen

Jari Mattila

The present invention addresses a method, apparatus and computer program product for enabling enhanced repetition transmission for downlink control signal to improve machine type communication coverage. One or a plurality of downlink control channel signaling window lengths is/are predefined, a start position of a window in which repetition of download control signal is allowed is determined based on the determined control channel signaling window length for each window length, and transmission of repetition of download control signal is caused at the determined start position in the respective obtained window length.

Repetition transmission for downlink control signal

There are provided measures for uplink configuration and transmission control in inter-site carrier aggregation. Such measures may exemplarily comprise measures for controlling configuration of a terminal device for an inter-site carrier aggregation mode, in which carriers from a macro cell and a micro cell are aggregated for uplink communication, with a configuration of uplink control information for the macro cell located at a first site and a configuration of uplink control information for the micro cell located at a second site, and/or measures for controlling transmission of a terminal device in the inter-site carrier aggregation mode with a handling of concurrent uplink transmissions at the terminal device.

Uplink configuration and transmission control in inter-site carrier aggregation

The present invention provides a method, apparatus and a computer program product for feedback design of hierarchical coordinated multipoint transmission. The present invention includes obtaining, at a user equipment, a list including a predetermined number of cells, identifying, at the user equipment, a cooperation set of cells including the cell serving the user equipment, determining, at the user equipment, for each cell included in the list whether the cell belongs to the identified cooperation set of the user equipment, and if the cell belongs to the cooperation set of the user equipment, reporting a first predetermined set of parameters, and if the cell does not belong to the cooperation set of the user equipment, reporting a second predetermined set of parameters.

Feedback design of hierarchical coordinated multipoint transmission

A method and apparatus are provided for providing improved spectrum efficiency by triggering a ranked transmission. In this regard, a method is provided that includes causing a configuration message to be transmitted to a mobile terminal, wherein the configuration message provides interpretation information for a frequency hopping flag bit. The method also includes determining a rank for a transmission. The method may include setting a rank indication in the frequency hopping flag bit of a downlink control message based on the determined rank of the transmission.

Method and apparatus for triggering a ranked transmission

An apparatus and a method are provided. The provided solution includes a controller configured to determine a transmission mode for user equipment, the transmission mode including non-codebook precoding with fixed precoding granularity; and to control a transceiver to transmit information on the selected transmission mode to the user equipment.

Apparatus and method for non-codebook based precoding

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

A first precoding matrix Wis selected from a first codebook comprising sets of rank specific precoding matrices. The first codebook is characterized by there being fewer precoding matrices associated with higher ranks than associated with lower ranks, and characterized by precoding matrices associated with ranks above a certain rank all being diagonal matrices. The selected first precoding matrix Wis used to select a rank-specific second precoding matrix Wfrom a second codebook, such that the selected first and second precoding matrices form a joint precoder specific to a desired rank. The second codebook is characterized by differently sized precoding matrices associated with each of N total ranks, in which N is an integer greater than one. Information on the joint precoder is reported to a network node over an uplink transmission channel.

Codebook design and structure for multi-granular feedback

Embodiments include a method for physical layer transmission in a network equipment including receiving, from a higher layer, messages to be transmitted during a subframe on one or more control channels. The number of elements required (i.e. aggregation level) for each control channel is determined. A plurality of physical resource blocks (PRBs) for transmitting the control channels and partitioning the PRBs into clusters is allocated. The interleaving depth (IDP) for each cluster is determined. Each element is mapped to a cluster according to the IDP for that cluster. A transmission signal including the clusters is generated.

Methods, apparatus and computer programs for physical layer transmission and/or reception

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Beijing, China

Shuang Tan