Qualcomm Incorporated

Christophe Chevallier

Mehmet Yavuz

Farhad Meshkati

Sumeeth Nagaraja

Rajat Prakash

Aziz Gholmieh

Andrei Dragos Radulescu

Peerapol Tinnakornsrisuphap

Siddharth Mohan

Cong Shen

Mustafa Saglam

Junyi Li

Piyush Gupta

Vinay Chande

Yeliz Tokgoz

Amer Catovic

Vinay Joseph

Damanjit Singh

Francesco Pica

Mukesh Kumar Mittal

Sunil Suresh Patil

Yan Zhou

Mostafa Khoshnevisan

Tamer Adel Kadous

Sanjiv Nanda

Chirag Sureshbhai Patel

Jen Mei Chen

Nachiappan Valliappan

Etienne Francois Chaponniere

Andrea Garavaglia

Satashu Goel

Long Duan

Vansh Pal Singh Makh

Manish Tripathi

Salil Sawhney

John David Boyd

Rajasekar Arulprakasam

Varun Khaitan

Yichao Huang

Jochen Hoidis

Suhas Mitra

Jay F Dills

Neil Carlson

Pooyan Amini

Juha Sirkka

Onur Senel

Leonid Golovanevsky

Lili Zhang

Hetal Pathak

Saravanan Balasubramani

Tawfik Benabdeljalil

Mukesh K Mittal

Methods, systems, and devices for wireless communications are described. Techniques for multiple transmission reception points (TRPs) in a cluster may coordinate scheduling and communications with a user equipment (UE). Different TRPs may allocate uplink resources for one or more UEs within a coordinated cluster to transmit feedback information. A first TRP may provide a first set of resources that one or more associated UEs may use to transmit acknowledgment (ACK) feedback to indicate successful receipt of a downlink transmission of the first TRP, and one or more other TRPs of the coordinated cluster may provide a second set of resources that the one or more UEs may use to transmit negative acknowledgment (NACK) feedback to indicate that a downlink transmission of the first TRP was lost. The second set of resources may include non-orthogonal multiple access (NOMA) resources.

Feedback transmission techniques in coordinated clusters of transmission reception points

Many environments or operational conditions create repetitive radio frequency (RF) interference conditions resulting from repetitive mechanical or electrical activity. This activity may create oscillations in the RF conditions between an MTC UE and a serving base station. Aspects of the present invention are directed to improving data efficiency and battery life by optimizing communication based on a detected periodicity of repetitive mechanical or electrical activity at the UE by monitoring the oscillations of at least one RF condition between the MTC UE and the base station, and scheduling communication between the UE and the network during periods associated with favorable radio conditions.

Scheduling in repetitive RF environments

The present disclosure generally relates to techniques to increase reliability of communications within a network during a low reliability period. The network may include a user equipment (UE) communicatively coupled with one or more transmit/receive points (TRPs), with the communications between the UE and the one more TRPs requiring a reliability above a first reliability threshold. A processor of a network entity may identify a low reliability period which occurs when the reliability of the communications is determined to be below a second reliability threshold. The processor may cause the network to perform one or more remedial actions to increase the reliability during the low reliability period.

Increasing reliability during multi-connectivity handovers

Various aspects and features related to wireless communication for high reliability and low latency are described. In an aspect of the disclosure, a method, a computer-readable medium, a system, and an apparatus are provided. A method of wireless communication includes communicating with a network via one or more network nodes using separate wireless links for each UE in a set of UEs using a same RAT. The method includes either transmitting uplink data traffic from a common source to the network nodes using respective separate wireless links corresponding to the two or more UEs or receiving downlink data traffic destined for the common source from the network nodes using respective separate wireless links corresponding to the two or more UE.

Multiple connectivity for high reliability

Methods and apparatuses are provided for causing active hand-in of a device from a macrocell base station to a femto node, which can be an inter-frequency hand-in. The femto node can broadcast a beacon, which can be received and reported by a device to a source base station along with one or more parameters. The source base station can communicate a handover message to the femto node or a related femto gateway along with the one or more parameters. The femto node or femto gateway can disambiguate the intended target femto node based in part on the one or more parameters, which can include applying one or more filters. Applying the one or more filters may include applying an UL RSSI filter to the one or more femto nodes to determine whether presence of the device causes a rise in UL RSSI measured at the one or more femto nodes.

Apparatus and methods for hand-in to a femto node

Transmit power management for small cells in a wireless communication environment may be achieved by receiving information generated by a plurality of access terminals associated with an access point, categorizing the access terminals based on the received information, and determining transmit power for the access point based on the categorization of the access terminals.

Determining transmit power based on categorization of access terminals

A small base node such as a Home Base Node (HNB), or femto cell, may reduce its transmit power in order to prevent co-channel or adjacent channel interference, or to limit its coverage area. Once the power is set, the HNB signal to a served Home User Equipment (HUE) its transmit Common Pilot Channel (CPICH) transmit power for accurate path loss estimation. When this power is outside of the permissible range, the HNB adjusts other parameters (such as Random Access Channel (RACH) constant value) to compensate for the error in signaled CPICH power, and thus compensate in that process the error in determining path loss. Similarly, if the uplink sensitivity is adjusted, to prevent interference, parameters would also be adjusted and signaled to the HUE to reflect the link imbalance.

Automated parameter adjustment to compensate self adjusting transmit power and sensitivity level at the node B

Techniques for femtocell message delivery and network planning are described herein. A mobile device sends a registration request to an access point, such as a femtocell access point. If denied registration, the mobile device may return to service by a macro cell access point. A network entity, such as a femtocell gateway serving the access point, may determine an identification of the mobile device. The network entity may send the identification of mobile device and an identifier of the access point to an application server. The application server may create and send a targeted message to the mobile device based on the identification of mobile device and the identifier of the access point. The application server may determine a user count for the access point and facilitate network planning based on the user count.

Femtocell message delivery and network planning

A base station includes a base unit and a plurality of remote antenna units (RAUs). Each of the RAUs includes a physical layer circuit (PHY). The PHYs are configured to each use the same physical layer identifier, but each PHY includes its own hardware for supporting users in the coverage area of that PHY. The base unit controls resource allocation for the RAUs to increase the capacity of the base station and/or reduce interference between PHYs.

Base station employing shared resources among antenna units

Methods and apparatus for communication comprise aspects that include performing a power management procedure for configuring a subset of network entities to receive one or more of downlink signal measurements and/or one or more uplink signal measurements. The methods and apparatus further comprise aspects that include storing the one or more one or more of downlink signal measurements and/or one or more uplink signal measurements associated with the subset of network entities at a database for managing transmit power at the subset of network entities. Moreover, the methods and apparatus comprise aspects that include adjusting a transmit power value of at least one of the subset of network entities from a first transmit power value to a second transmit power value based at least in part on the one or more of downlink signal measurements and/or one or more uplink signal measurements.

Methods and apparatus for power management in a wireless communication system

A small cell (e.g., femtocell) in a wireless communication may determine a set of wireless signal measurements for a plurality of small cells causing pilot cell pollution within a coverage area. The small cell may determine an adjustment of a transmission parameter of the small cells for reducing the pilot cell pollution, and transmit the adjustment to the small cells. The adjustment may include, for example, minimizing an area of overlap between at least two small cells having signal power difference below a threshold, maximizing a signal to interference and noise ratio at a location associated with at least two small cells, minimizing an area associated with at least two pilot signals within a threshold signal level, distributing traffic load to at least two of the small cells based on the set of measurements, or by minimizing the number of small cells covering a path.

Centralized management for pilot pollution mitigation in small cell networks

Methods, apparatuses, and computer program products are disclosed for facilitating a beacon-assisted handover from a macro network to a femto cell during an active call. A femto cell management system assigns a unique identifier to a femto cell, which the femto cell utilizes to broadcast a beacon at a frequency different than the operating frequency of the femto cell. A wireless terminal receives a control message from the macro network directing the wireless terminal to scan particular frequencies. The wireless terminal subsequently provides a report to the macro network identifying attributes ascertained from the scan, which includes attributes associated with the beacon. The macro network then performs a handover from the macro network to the femto cell as a function of the attributes.

Method and apparatus for facilitating a beacon-assisted handover to a home node-B for users on an active call

Disclosed are systems and methods for regulating system reselections by idle-mode mobile devices. In one aspect, a femtocell may be configured to reduce frequency of its reselection beacon, which reduces probability that a fast moving mobile device will detect the reselection beacon and reselect to that femtocell. This aspect may also delay femtocell reselection for slow moving mobile devices. In another aspect, a macrocell may slow down system reselection by adjusting cell reselection parameters used by mobile devices to determine the time needed to evaluate cell reselection criteria. Yet in another aspect, a macrocell may instruct a collocated femtocell to decrease its effective coverage area to avoid premature reselection by fast moving mobile devices. Yet in another aspect, a femtocell may use power boosting techniques to increase its reselection radius.

Method and system for regulating frequent cell reselections by idle-mode mobile devices

Growing community of inventors

San Diego, CA, United States of America

Christophe Chevallier