Abstract: This disclosure relates to Multi-User Multiple-Input-Multiple-Output (MU-MIMO) (including without limitation Distributed MU-MIMO (D-MU-MIMO)) communication techniques that employ interference suppression (IS) precoding schemes (including, for example, precoding schemes that use local interference suppression and precoding schemes that use global interreference suppression).

Abstract: One embodiment is directed to a system to provide wireless service to user equipment using licensed radio frequency spectrum and unlicensed RF spectrum. The system comprises a controller and a plurality of radio points to transmit and receive radio frequency signals to and from the user equipment using the licensed RF spectrum. The system further comprises a wireless termination to transmit and receive radio frequency signals to and from the user equipment using unlicensed RF spectrum. The controller is configured to use a mobility group for providing the wireless service to the user equipment using the unlicensed RF spectrum and a plurality of WLAN access points. The controller is configured to establish an interface with the wireless termination for the mobility group to communicate control plane data to the wireless termination associated with providing the wireless service to the user equipment using the unlicensed RF spectrum. Other embodiments are disclosed.

Abstract: An example communication system in a cellular network comprises: a processing system comprising a controller and remote units, with the remote units being configured to communicate with the controller and to communicate with mobile devices within a communication cell of the cellular network. At least part of the processing system is configured to perform operations comprising: estimating signal strength experienced by all or some of the mobile devices; identifying, based at least on the signal strength, one or more of the mobile devices that can be scheduled for communication with one or more of the remote units in the communication cell on a same airlink resource; and scheduling the communication.

Abstract: An example communication system in a cellular network comprises: a processing system comprising a controller and remote units, with the remote units being configured to communicate with the controller and to communicate with mobile devices within a communication cell of the cellular network. At least part of the processing system is configured to perform operations comprising: estimating signal strength experienced by all or some of the mobile devices; identifying, based at least on the signal strength, one or more of the mobile devices that can be scheduled for communication with one or more of the remote units in the communication cell on a same airlink resource; and scheduling the communication.

Abstract: Some embodiments are directed to systems and methods for performing automatic transmit power control for a subset of radio points of a centralized radio access network (C-RAN) deployed in a venue (such as a stadium or arena) that are mounted in or near the venue so as to primarily provide wireless coverage to user equipment located in the event area of the venue.

Abstract: This disclosure is directed to techniques for implementing uplink spatial reuse in a C-RAN.

Abstract: A system for channel access in Long Term Evolution (LTE) License-Assisted Access (LAA) is disclosed. The system includes a controller and a plurality of radio points. A level one radio point transmits a first reservation signal in response to a first backoff counter reaching zero. The first reservation signal indicates that the level one radio point will begin a first transmission of a first duration starting in a next subframe. A candidate level two radio point receives the first reservation signal and determines whether the candidate level two radio point received the first reservation signal with a signal to interference noise ratio (SINR) that exceeds a reservation detection threshold for the candidate level two radio point.

Abstract: One embodiment is directed to a system that implements a downlink transmission mode that precodes sequences of symbols using a precoder matrix selected from a codebook. Linear transformations are performed on the sequences of precoded symbols using a distribution matrix. The distribution matrix is configured so that each of a plurality of precoder matrices provides perfect steering of transmit power to a corresponding one of a plurality of disjoint subsets of the antenna ports used for the downlink transmission mode. Also, the distribution matrix can be configured so that at least one precoder matrix provides peak power at all of the antenna ports used for the downlink transmission mode.

Abstract: Embodiments of a C-RAN are disclosed that support using Licensed-Assisted Access (LAA) deliver Long-Term Evolution (LTE) wireless service using unlicensed radio frequency (RF) spectrum.

Abstract: A system for reporting UE measurements is disclosed. The system includes a spectrum access system (SAS) configured to allocate a frequency band in the system, a coexistence manager (CxM) communicatively coupled to the SAS and allocate a set of radio frequency (RF) channels within the frequency band. The system also includes one or more CBSDs communicatively coupled to the SAS and CxM and configured to provide wireless service to user equipment (UEs) using one or more of the RF channels allocated by the CxM. The CxM is configured to manage co-existence of the CBSDs and advise the SAS on how to allocate the RF channels based, at least in part, on aggregated measurement reports provided to the CxM from the CBSDs.

Abstract: This disclosure is directed to various ways to dynamically manage the subset of radio points that are used to transmit to user equipment in a C-RAN.

Abstract: An example communication system in a cellular network comprises: a processing system comprising a controller and remote units, with the remote units being configured to communicate with the controller and to communicate with mobile devices within a communication cell of the cellular network. At least part of the processing system is configured to perform operations comprising: estimating signal strength experienced by all or some of the mobile devices; identifying, based at least on the signal strength, one or more of the mobile devices that can be scheduled for communication with one or more of the remote units in the communication cell on a same airlink resource; and scheduling the communication.

Abstract: One embodiment is directed to a system that implements a downlink transmission mode that precodes sequences of symbols using a precoder matrix selected from a codebook. Linear transformations are performed on the sequences of precoded symbols using a distribution matrix. The distribution matrix is configured so that each of a plurality of precoder matrices provides perfect steering of transmit power to a corresponding one of a plurality of disjoint subsets of the antenna ports used for the downlink transmission mode. Also, the distribution matrix can be configured so that at least one precoder matrix provides peak power at all of the antenna ports used for the downlink transmission mode.