Nec Corporation

Motorola Corporation

Nec Europe Ltd.

Motorola Solutions, Inc.

Motorola Mobility LLC

Tetsu Ikeda

Linghang Fan

Jun Zhou

Andreas Maeder

Yuefeng Zhou

Hisashi Futaki

Sadafuku Hayashi

Michael Einhaus

Hiroshi Hayashi

Hidenori Akita

Masahito Asa

Mohsin M Mollah

Ryutaro Hamasaki

Venkatarao Gonuguntla

The present disclosure provides an apparatus, and a method for optimizing user equipment (UE) power consumption on activated Secondary Cells during dormancy and non-dormancy behavior based on the first configuration and second configuration information as provided by radio station.

Method, a user equipment, and a radio station for optimizing user equipment power consumption on activated secondary cells

The present disclosure discloses a method for a User Equipment (UE). The method comprises: establishing a communication session with a network node for transmission of data; receiving a configuration message indicating information for one or more of transmission slots for a plurality of logical channels; setting up for transmission of data based on the received configuration message to select one or more logical channels of the plurality of logical channels; and prioritizing the selection of plurality of logical channels when the UE is indicative of initiation of transmission of data.

User equipment, method of user equipment, network node, and method of network node

A method for operating a WiMAX femtocell base station, wherein the femtocell base station has an active operational mode, in which the radio interface subsystem of the femtocell base station is fully power supplied, is characterized in that a power saving mode with reduced radio interface activity is provided, wherein the femtocell base station is enabled to transit between the active operation mode and the power saving mode. Furthermore, a corresponding femtocell base station for deployment in a WiMAX network is disclosed.

Method for operating a WiMAX femtocell base station and femtocell base station

A radio communication system includes a plurality of radio communication devices that transmit and receive a subframe as a unit. Each of the plurality of radio communication devices adds a cyclic prefix to the head of the effective symbol of each OFDM symbol that makes up a subframe and adds a postfix to the tail of the effective symbol of the last OFDM symbol of the subframe.

Radio communication system, radio communication device, radio communication method, and program

A radio communication system according to the present invention has a plurality of radio communication devices that transmit and receive subframes one by one. Each of the plurality of radio communication devices includes a subframe generation unit that generates the subframe with a plurality of symbols and causes an effective symbol length of a last symbol of the subframe to be 1/X (where X is an integer equal to or greater than 2) and a transmission unit that transmits the subframe to another radio communication device.

For enhancing user throughput and coverage within a multi-cell radio system a method for operating a multi-cell radio system, especially an OFDMA-based radio system including a plurality of base stations, wherein different frequency reuse factors are used within different reuse zones of one cell by a fractional frequency reuse (FFR) scheme, the method includes the following steps: allocating a size or resource to the different reuse zones, and allocating users into different reuse zones. Further, a multi-cell radio system is described, preferably for carrying out the above mentioned method.

Method for operating a multi-cell radio system and a multi-cell radio system

A method for interference mitigation for femtocell base stations of a WiMAX network, wherein the femtocell base station is located within the transmission range of at least one macrocell base station and/or at least one other femtocell base station, is characterized in that the femtocell base station performs downlink measurements to detect neighboring macrocell and/or femtocell base stations and reports results of the downlink measurements to at least one higher layer network controller, wherein the network controller allocates transmission parameters to the WiMAX femtocell base stations on the basis of at least the reported measurement results and the current resource occupation in the network.

Method for interference mitigation for femtocell base stations of a WiMAX network

An intermediate station and method for facilitating handover in a multi-hop communications system is disclosed. The method may include receiving a handover trigger, finding a target station to receive handover, determining whether the handover requires a timing change, wherein if it is determined that a preamble and broadcast timing change for one or more downstream stations is required, estimating when the handover will take place, instructing the one or more downstream stations to resynchronize, and performing the handover to the target station.

Intermediate station and method for facilitating handover in a multi-hop communication system

To provide high-quality communication even when the power for synchronization preamble is reduced in an OFDM communication device. To achieve symbol synchronization, an OFDM communication device obtains a zero amplitude reduced preamble signal by passing a specified synchronization preamble through an ideal low-pass filter to reduce a signal component near zero amplitude within a time domain, and time-multiplexes the obtained zero amplitude reduced preamble signal with transmit data to generate an OFDM transmit signal. A receiver section of the OFDM communication device determines the cross correlation between a receive signal and a specified synchronization preamble, which is patterned the same as the counterpart in a transmitter section of the OFDM communication device, and detects a synchronization position in accordance with the determined cross correlation.

OFDM communication device

A radio communication system with adaptive interleaving selects between chip interleaving and bit interleaving depending upon the number of active code signals. A transmitted RF signal includes a coded information signal part and a control signal part that indicates a number of active code signals that have been combined to form the coded information signal part. The system is especially suited for MC-CDMA systems.

Growing community of inventors

Kanagawa, Japan

Tetsu Ikeda