Interdigital Technology Corporation

Interdigital Patent Holdings, Inc.

Intel Corporation

Donald M Grieco

Sung-Hyuk Shin

Robert L Olesen

Kyle Jung-Lin Pan

Aykut Bultan

Jung-Lin Pan

Alpaslan Demir

Ariela Zeira

Alexander Reznik

Philip J Pietraski

Guodong Zhang

John W Haim

David K Mesecher

Gary Cheung

Zinan Lin

Younglok Kim

Jaeyoung Kwak

Yuejin Huang

Chang-Soo Koo

Robert A DiFazio

Hyun Seok Oh

Andrew F Bednarz

Bin Li

Marian Rudolf

Janet A Stern-Berkowitz

Rui Yang

Peter Shaomin Wang

Shankar Somasundaram

Vincent Roy

Erdem Bala

Joseph S Levy

Leonid L Kazakevich

Louis J Guccione

Phillip J Pietraski

Prabhakar Chitrapu

Kyle Pan

Fatih M Ozluturk

Eldad M Zeira

Allan Yingming Tsai

Charles A Dennean

Yingxue K Li

Faith M Ozluturk

Timothy A Axness

Kenneth Kearney

Fryderyk Tyra

Al&eacute;xander Reznik

A combined open loop and closed loop (channel quality indicator (CQI)-based) transmit power control (TPC) scheme with interference mitigation for a long term evolution (LTE) wireless transmit/receive unit (WTRU) is disclosed. The transmit power of the WTRU is derived based on a target signal-to-interference noise ratio (SINR) and a pathloss value. The pathloss value pertains to the downlink signal from a serving evolved Node-B (eNodeB) and includes shadowing. An interference and noise value of the serving eNodeB is included in the transmit power derivation, along with an offset constant value to adjust for downlink (DL) reference signal power and actual transmit power. A weighting factor is also used based on the availability of CQI feedback.

Combined open loop/closed loop (CQI-based) uplink transmit power control with interference mitigation for E-UTRA

A method and apparatus are disclosed comprising a combined open loop/closed loop uplink power control scheme for E-UTRA. The combined open and closed loop method for UL intra-cell PC controls the wireless transmit receive unit (WTRU) transmit power spectral density (PSD), PSD, (e.g. power per RB).

Combined open loop/closed loop method for controlling uplink power of a mobile station

The transmission and decoding of resource blocks (RBs) transmitted via a multiple-input multiple-output (MIMO) antenna having a plurality of transmit antennas is disclosed. Each RB includes a plurality of resource elements (REs). Each RE is reserved for one of a common reference signal (CRS) associated with one of the transmit antennas, a dedicated reference signal (DRS) including a single beamformed or precoded pilot, a DRS including a composite beamformed or precoded pilot, and a data symbol. Each RB may include a 'control type' data symbol that indicates a DRS mode associated with the RB. In one DRS mode, each DRS includes a single beamformed or precoded pilot. In another DRS mode, each DRS includes a composite beamformed or precoded pilot. In yet another DRS mode, single beamformed or precoded pilots, and composite beamformed or precoded pilots, may coexist and be transmitted simultaneously within the same RBs or in different RBs.

Hybrid dedicated reference signal method and system

A wireless device and a method of operating the wireless device is disclosed for controlling a transmission power of a wireless transmit receive unit (WTRU). A total transmission power employed by the WTRU when transmitting via a single antenna may be offset by a total transmission power offset value from a total transmission power employed by the WTRU when transmitting via a plurality of antennas.

Wireless device for controlling transmission power

A method and apparatus for measuring and reporting a rank and/or a precoding matrix for multiple-input multiple-output (MIMO) communication are disclosed. A metric indicating a channel condition is measured and a rank is selected based on the metric. The metric may be a signal-to-interference and noise ratio (SINR), throughput, a block error rate (BLER), system capacity, a sum rate, or the like. An SINR for each radio block group (RBG) for each rank is calculated. A data rate is calculated for each RBG based on the SINR for each rank. An overall rate for all RBGs is calculated for each rank. At least one rank is selected based on the overall rate. At least one precoding matrix may be selected jointly with or separately from the at least one rank.

Method and apparatus for measuring and reporting a rank and a precoding matrix for multiple-input multiple-output communication

A method and apparatus for handling a control channel for carrier aggregation in wireless communications. The method includes determining which component carrier to listen to, detecting the downlink control channel, processing mapping information related to downlink and uplink transmissions and operating discontinuous reception with respect to carrier aggregation. The method also includes detecting a component carrier, determining the component carrier type and locating the anchor component carrier, if necessary, where the anchor component carrier carries the carrier aggregation information.

Control channel signaling and acquisition for carrier aggregation

A wireless communication system includes a wireless transmit/receive unit (WTRU). The WTRU is configured to generate at least one local codebook based on a baseline codebook, and select a codeword from the local codebook that is associated with feedback.

Variable feedback for universal terrestrial radio access

A base station and a method of operating the base station is disclosed for controlling an uplink power. A total uplink transmission power employed when transmitting via a single antenna may be offset by a total power offset value from a total uplink transmission power employed when transmitting via a plurality of antennas.

Base station for controlling uplink power

Methods for signaling multi-user multiple-input multiple output (MU-MIMO) parameters for Evolved-UTRA (E-UTRA) are disclosed. Example signaling format methods are presented that allow use of distributed virtual resource blocks (DVRB) or support of four wireless transmit/receive units (WTRUs) but maintaining a predetermined signal format size. A signaling format is also presented that signals transmission precoding matrix indexes used by all co-scheduled WTRUs.

Method for signaling MU-MIMO parameters

A power control scheme for an enhanced Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) physical uplink shared channel (PUSCH) is disclosed. In a first embodiment, when an uplink grant is configured for accumulation commands, the wireless transmit/receive unit (WTRU) combines the accumulation commands received in both the scheduling grant and the transmit power control physical downlink control channel. In a second embodiment, when an uplink grant is configured for absolute commands, the WTRU resets the accumulation control function immediately after receiving each absolute transmit power control command and then combines the absolute power control with the accumulation power control.

Power control for combined dynamically and persistently scheduled PUSCH in E-utra

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Manhassett, NY, United States of America

Donald M Grieco