Interdigital Patent Holdings, Inc.

Interdigital Technology Corporation

Shamim Akbar Rahman

Paul Marinier

Vincent Roy

Joseph Kwak

Frank La Sita

Teresa Joanne Hunkeler

Christopher Cave

Angelo Cuffaro

Athmane Touag

Marian Rudolf

Ahmed Ali

Athmane X Touag

Martino M Freda

Jean-Louis Gauvreau

Angelo A Cuffaro

Rocco Di Girolamo

Joseph M Murray

Chunxuan Ye

Christopher R Cave

Alpaslan Demir

Mihaela C Beluri

Amith Vikram Chincholi

Scott Laughlin

Debashish Purkayastha

Frank LaSita

Liangping Ma

Zinan Lin

Yuying Dai

Joseph A Kwak

Kamraan Nasim Syed

Rui Yang

Erdem Bala

Rocco DiGirolamo

Teresa Hunkeler

Douglas R Castor

Joseph Gredone

Parul Mudgal

Stephen E Terry

Michael F Starsinic

Dale N Seed

Alexander Reznik

Saad Ahmad

Prabhakar Chitrapu

Arty Chandra

Paul L Russell, Jr

John L Tomici

David S Bass

Nicholas J Podias

Scott C Hergenhan

John Cartmell

Kushanava Laha

Reeteshkumar Varshney

Aravind Kamarajugadda

Onkarnath Upadhyay

Juan Carlos Zuniga

Kenneth F Lynch

Paul Russell

Francois Periard

Phillip L Leithead

Ramya Gopalan

Sowmya Gopalan

Ahmad Saad

Alpaslan Y Demir

Shamim Abkar Rahman

A wireless network may implement a reduced bandwidth for control information transmitted and/or received on the wireless network. The reduced bandwidth may be used to avoid interference that may be detected from an in-band or adjacent channel. The reduced bandwidth may be used for transmission and/or reception of control information on a cellular or Wi-Fi channel. An eNB or an access point (AP) may signal to a wireless transmit/receive unit (WTRU) information associated with the reduced control channel, such as the power and/or the location of the channel in a frequency band. The control channel may be shifted to avoid a change in interference.

Adaptive control channel

A method and apparatus for coexistence among wireless transmit/receive units (WTRUs) operating in the same spectrum are disclosed. A wireless transmit/receive unit (WTRU) may include a processor that receives a configuration of a coexistence gap pattern defining a pattern of transmission periods and silent periods for the WTRU. The processor may control the WTRU to transmit information during the transmission periods and to not transmit information during the silent periods of the coexistence gap pattern.

Method and apparatus for coexistence among wireless transmit/receive units (WTRUs) operating in the same spectrum

A method and apparatus for operating supplementary cells in licensed exempt (LE) spectrum. An aggregating cell operating in a frequency division duplex (FDD) licensed spectrum is aggregated with a LE supplementary cell operating in a time sharing mode for uplink (UL) and downlink (DL) operations. The LE supplementary cell may be an FDD supplementary cell dynamically configurable between an UL only mode, a DL only mode, and a shared mode, to match requested UL and DL traffic ratios. The LE supplementary cell may be a time division duplex (TDD) supplementary cell. The TDD supplementary cell may be dynamically configurable between multiple TDD configurations. A coexistence capability for coordinating operations between the LE supplementary cell with other systems operating in the same channel is provided. Coexistence gaps are provided to measure primary/secondary user usage and permit other systems operating in the LE supplementary cell channel to access the channel.

Method and apparatus for operating supplementary cells in licensed exempt spectrum

Systems, methods, and apparatus may be used to provide assistance for connection procedures in a hierarchical network where macro cells may be operating in licensed spectrum while small cells may be operating in dynamic and shared spectrums, such as TVWS. This may be done, for example, to allow an LTE system performing carrier aggregation (CA) to reconfigure itself to change from a supplementary cell (SuppCell) in one dynamic and shared spectrum channel to a SuppCell in another dynamic and shared spectrum channel.

LTE operation in small cells using dynamic shared spectrum

Methods and apparatus for shared access systems may be used to allow operation in three-tiered shared spectrum architecture. For example, a Shared Spectrum Manager (SSM) may organize spectrum segments. The SSM may communicate with access users of different priority and may use message exchanges to request spectrum, bid for spectrum, manage spectrum, or the like. The SSM may manage admission of access users (allocation of spectrum to users) and operation with a spectrum request that may be provided as a range between a minimum (guaranteed) and maximum quality of operation. The SSM may also manage the way an access user may use the assigned spectrum. Inter-SSM communication may be used in regions where multiple SSMs may exist (e.g. country borders). Accordingly, triggers for this inter-SSM communications and corresponding actions are also disclosed herein.

Methods and apparatus for accessing spectrum in a shared spectrum system

A system, apparatuses and methods are provided for communicating in an opportunistic band. Channels that are reserved for primary users are used by sensing devices when primary users are not present. A geo-location database is configured to store occupancy information of a channel and information associated with the primary user of the channel. The database includes information such as the type of primary user, and the expected occupancy time of a channel by a primary user. Sensing devices are categorized into different classes based on their sensing capability. A device capabilities database stores device classification information associated with the sensing devices attached to a dynamic spectrum management system.

Methods and apparatuses for spectrum sensing in an opportunistic band

A method for sensing measurement gap scheduling includes allocating a new supplementary carrier in a license-exempt spectrum by a radio resource management (RRM) entity in an evolved Node B (eNB); configuring a local cognitive sensing entity in the eNB by the RRM entity; configuring a wireless transmit/receive unit (WTRU) for cognitive sensing through radio resource control (RRC) signaling, the RRC signaling being generated by the eNB; configuring a local cognitive sensing entity at the WTRU by a dynamic spectrum management (DSM) entity; and signaling a start and a duration of a measurement gap to an enhanced sensing component.

Sensing measurement configuration and reporting in a long term evolution system operating over license exempt bands

An access point includes a transmitter configured to transmit signals, a receiver configured to receive signals, and a timing information device. The timing information device is configured to receive a timing information request from a station associated to the access point, receive timing information for a beacon signal sent by a second access point, and report the timing information to the station. The timing information includes a time difference relative to a known reference time for transmission of the beacon signal and the time difference is an offset in timing units.

Neighbor scanning in wireless local area networks

Systems, methods, and instrumentalities are disclosed that may provide assistance across networks using different radio access technologies. A centralized gateway CGW () may be provided to facilitate the assistance via client devices in the networks (). The CGW () and client devices may use a common protocol () and common interface to take actions relating to the assistance ().

Method and apparatus for assisted/coordinated intra-home communications

Described herein are methods, metrics and apparatus for bandwidth allocation for cognitive radio. Information that needs to be passed between different components of a dynamic spectrum management (DSM) system for dynamic bandwidth allocation along with the corresponding interfaces is identified. Methods and associated metrics for measuring network performance, evaluating channel sensing results and handling various bandwidth allocation scenarios are presented. Also provided is an admission control mechanism for quality of service support. Alternate channel monitoring may be performed in the background so that when a new channel is needed, an alternate channel may be immediately allocated and service disruption to the DSM system is reduced. A channel may be dynamically assigned as the primary channel in multiple channel scenarios to support tasks such as transmission of acknowledgment frames. Hybrid mode devices that may access a television white space (TVWS) database and perform spectrum sensing are also described.

Dynamic spectrum management

A wireless transmit/receive unit (WTRU) and a dynamic spectrum management (DSM) engine are described. The WTRU includes a transceiver, a radio frequency (RF) spectrum sensing unit and a processing unit. The transceiver transmits over a wireless link. The RF spectrum sensing unit measures information indicative of usage of a spectrum by other devices. The processing unit detects a change in performance of the wireless link, controls the transceiver to transmit a notification to a DSM engine indicating that the change in the performance of the wireless link was detected on a condition that the processing unit detects the change in performance of the wireless link, and receives a sensing task request for the WTRU to measure the information indicative of the usage of the spectrum by other devices based on the notification transmitted to the DSM engine indicating that the change in the performance of the wireless link was detected.

A method and apparatus may be used for network management via MAC measurements. The measurements may include WTRU uplink traffic loading measurement, and an AP service loading measurement. The measurements may be applicable to at least to layers 1 and 2 as applied to, for example, 802.11k in the context of OFDM and CDMA 2000 systems, but may be applicable to other scenarios as well. A method for determining and transmitting congestion information may be provided for a Wireless Local Area Network (WLAN) system. The method and apparatus may be used for managing congestion when congestion is detected. The method and apparatus may be used in wireless systems that use a Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) mechanism. The methods may be implemented in wireless transmit/receive units (WTRU)s and access points (AP)s of various forms.

Method and apparatus for determining and managing congestion in a wireless communications system

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Chomedey, Canada

Athmane X Touag