Alcatel Lucent

Lucent Technologies Inc.

Alcatel-lucent USA Inc.

Nokia of America Corporation

Provenance Asset Group LLC

Teck H Hu

Shin Horng Wong

Fang-Chen Cheng

Feng Han

Matthew P J Baker

Matthew Baker

Nandu Gopalakrishnan

Mohammad Riaz Khawer

Sigen Ye

Ashwin Sampath

Farooq Khan

Qi Jiang

Yifei Yuan

Pantelis Monogioudis

Jiyong Pang

Achilles George Kogiantis

Jung-Tao Liu

Ashok N Rudrapatna

Gang Shen

Min Zhang

Gordon Peter Young

Jun Wang

Jun Hui Liu

Hajo Bakker

Jung Ah Lee

Said Tatesh

Christian Gerlach

Jonathan Ling

Jiang Chang

Hakon Helmers

Andreas Weber

Dongyao Wang

Pengfei Zhu

Dandan Wang

Kurt Weese

Thomas Bitzer

Sudepp Kumar Palat

Inhyok Cha

Zhang Min

Henning Martens

Shin Worng Wong

A base station requires one or more channels in an unlicensed frequency band for a predetermined time interval and schedules one or more user equipment for uplink transmission on the one or more channels during the predetermined time interval. User equipment transmits, over a licensed frequency band, a request for resources for uplink transmission in an unlicensed frequency band. The user equipment receives scheduling information indicating a first portion of a predetermined time interval that is allocated to the first user equipment for uplink transmission on one or more channels in the unlicensed frequency band.

Network controlled acquisition of uplink channels in unlicensed frequency bands

A transmitting device performs a channel assessment in a previous sub-frame in an unlicensed carrier. After a successful channel assessment, the transmitting device starts a data transmission. The transmitting device transmits a control message for indicating the data transmission in (E)PDCCH. The control message may include the starting time of the data transmission and/or at least one transmission characteristic in the previous sub-frame. The transmission device may transmit an initial control message for indicating a potential data transmission being started in the sub-frame in which the initial control message is transmitting. Method and apparatus enable (E)CCA to take place at any time, and data transmission to start earlier than the next sub-frame boundary after a successful completion of (E)CCA, thus improving the data transmission capacity, especially in circumstances when the maximum length of transmission is constrained.

Method and apparatus for supporting a partial sub-frame data transmission in LTE systems

A method is provided for assisting data transmission on a first carrier by indicating a termination point of data transmission in a transmitting device and apparatus thereof, wherein the method comprises the steps of: A. transmitting data on the carrier to a receiving device in a first subframe; and B. transmitting downlink control information to the receiving device; wherein the downlink control information includes a termination point indication for indicating a termination point of the data in the first subframe. The method and apparatus could improve the utilization of subframe and transmission capacity, and enable LTE to satisfy the regulations for unlicensed operation with high spectral efficiency.

Method for assisting data transmission on a first carrier by indicating a termination point of data transmission

The present disclosure provides methods and apparatuses for HARQ retransmission on an unlicensed carrier in an LTE-LAA system. A method in the base station includes: performing a CCA detection on the unlicensed carrier to determine energy on the unlicensed carrier and, at the same time, initiating an HARQ discarding timer for the unlicensed carrier, when the base station and a UE operate on the unlicensed carrier; comparing the determined energy with a predetermined CCA threshold; if the determined energy on the unlicensed carrier is not smaller than the CCA threshold until the HARQ discarding timer is expired, giving up the HARQ retransmission on the unlicensed carrier; and if the energy is detected to be smaller than the CCA threshold before the HARQ discarding timer is expired, continuing the HARQ retransmission on the unlicensed carrier.

Methods and apparatuses for HARQ retransmission on unlicensed carrier in LTE-LAA system

The method includes receiving, at a user equipment, a request-to-send (RTS) signal from a base station in an unlicensed channel, the RTS signal including individual IDs or group IDs of multiple user equipments, the multiple user equipments including the user equipment; and identifying whether the RTS signal includes an individual ID or group ID of the user equipment, wherein the identifying includes sending a clear-to-send (CTS) signal to the base station in a licensed channel or the unlicensed channel to allow the base station to perform data transmission to the user equipment in response to the RTS signal including the individual ID or group ID of the user equipment; and ignoring the RTS signal in response to the RTS signal not including the individual ID or group ID of the user equipment.

Method and apparatus for mitigating hidden node interference

The invention provides the method and apparatus for node and UE to schedule and transmit CTS in a communication network. The method comprises that a node transmits a RTS for indicating a CTS scheduling information to a LTE in an unlicensed band, wherein the scheduling information is used to indicate the LTE to send a CTS in uplink licensed band in response to the RTS. The CTS scheduling information may explicitly include time resource and frequency resource for the UE to transmit the CTS. The CTS scheduling information may implicitly indicate the time and frequency resource for the UE to transmit the CTS. Based on the explicit or implicit schemes of the present application, the scheduling signaling overhead can be reduced and the co-existence problem between LTE-U/LTE-U or between LTE-U/Wi-Fi can be efficiently mitigated.

Method and apparatus for scheduling CTS in a communication network

At least one example embodiment discloses a system including a network element configured to transmit at least first downlink control information and second downlink control information to a first user equipment (UE) being served by a serving cell, the first downlink control information associated with a first identification and the second downlink control information associated with a second identification, and the second downlink control information corresponding to at least one interfering source.

Methods and systems for signaling dynamic network assisted information to a user equipment

According an embodiment the method includes sending a RRC connection reconfiguration message to a user equipment, the RRC connection reconfiguration message including at least one energy sensing threshold corresponding to at least one unlicensed channel; and receiving a Layer 1 channel indication message via a licensed channel from the user equipment, the Layer 1 channel indication message indicating whether an unlicensed channel is free.

Method for fast channel measurement and feedback in a LTE licensed-assisted access based communication system

Embodiments relate to a concept for testing a transceiver device () which may be coupled to an antenna array (), the antenna array () comprising at least two an antenna elements. It is provided () spatial radiation characteristics of an antenna reference or the antenna array () and at least one antenna element of the antenna array. It is determined (), based on the spatial radiation characteristics and a predefined test quantity for a spatially unaware receiver or transmitter test of the transceiver device (), a spatially aware test quantity for testing the transceiver device () using the spatially unaware receiver or transmitter test based on the determined spatially aware test quantity.

Method, apparatus and computer program for testing a transceiver device

Embodiments of the claimed subject matter provide embodiments of methods for supporting dynamic sub frame reconfiguration in a time division duplex wireless communication system. One embodiment includes transmitting, from a first base station to a second base station, a message indicating that the first base station is configured for scheduling uplink transmissions from first user equipment in one or more subframes of a time division duplex frame. The message is transmitted when the second base station is configured for downlink transmission to second user equipment in the subframe(s).

High interference indicator for time division duplex wireless communication systems

A first user equipment accesses, based on first information in a first downlink control information (DCI) message addressed to the first user equipment, one or more of a plurality of sets of information indicating pairings for multiuser MIMO from a table stored in the first user equipment. The first user equipment performs interference suppression or cancellation for one or more second user equipment based on information in the one of the plurality of sets.

Interference cancellation and suppression for multi-user multiple-in/multiple out (MIMO) communication

A first base station selects a subset of channels of an unlicensed frequency band based on indications of energy received over the channels. The first base station transmits one or more messages instructing user equipment to monitor the subset of channels and report information indicating whether at least one second base station is transmitting over the subset of channels. User equipment monitors the subset of channels of the unlicensed frequency band in response to receiving the one or more messages from a first base station indicating the subset of channels. The user equipment transmits one or more messages including information indicating whether one or more second base stations are transmitting over the subset of channels.

User equipment assistance for interference mitigation in unlicensed frequency bands

The invention proposes method of providing measurement reports. The eNodeB sends (S, S) a user equipment information about a plurality of subframe patterns used by a plurality of wireless networks respectively, and notifies (S, S) the user equipment associations between the measurement reports and said plurality of subframe patterns. The user equipment measures (S) channel information in at least one subframe patterns, generates measurement reports for said at least one subframe patterns according to said association, and sends (S, S) said measurement reports to said eNodeB. The eNodeB relates (S) each of the received measurement reports with the corresponding subframe pattern according to said association.

Methods and devices for providing measurement reports

At least one example embodiment discloses a system including a network element configured to transmit downlink control channel information to a user equipment (UE) using a first bandwidth, the first bandwidth being at least a portion of a long term evolution (LTE) bandwidth, transmit a preamble to the UE using a second bandwidth, the second bandwidth being a bandwidth excluding the LTE bandwidth, and the preamble indicating a scheduled data transmission, and transmit data to the UE using the second bandwidth in accordance with the downlink control channel information and the preamble.

Methods and systems for scheduling unlicensed band transmissions

A first cell transmits a virtual cell identifier and state information associated with the virtual cell identifier over an interface to a second cell. The first cell and one or more third cells use the virtual cell identifier for transmissions to first user equipment. The state information indicates one of a plurality of states that indicate whether the virtual cell identifier is associated with at least one non-virtual reference signal for the first cell, the second cell, or one or more third cells. The second cell receives the virtual cell identifier and the state information and transmits the virtual cell identifier and state information over an air interface to second user equipment served by the second cell. The second user equipment performs interference cancellation or suppression of transmissions to the first user equipment based on the virtual cell identifier and the state information.

Signaling of non-virtual reference signals in coordinated multipoint communication

Growing community of inventors

Budd Lake, NJ, United States of America

Teck H Hu