Samsung Electronics Co., Ltd.

Mavenir Networks, Inc.

Qualcomm Incorporated

Vmware, Inc.

Mavenir Systems, Inc.

Sridhar Rajagopal

Ying Li

Shadi Abu-Surra

Farooq Khan

Zhouyue Pi

Jianzhong Zhang

Young-Han Nam

Thomas David Novlan

Kaushik Morapakkam Josiam

Matthew Brendan Shoemake

Wessam Afifi Ahmed

Aris Papasakellariou

Rakesh Taori

Eran Pisek

Sudhir Ramakrishna

Elisha Ziskind

Keith Farkas

Michael Nelson

Rene Wenzel Schmidt

Guoqiang Shu

Richard Stirling-Gallacher

Joanne Ren

Eko Nugroho Onggosanusi

Boon Loong Ng

Md Saifur Rahman

Yang Li

Do-Young Kim

Li Guo

Eun-Tae Won

Krishna Kamal Sayana

Jae-Seung Son

Brian Joseph

Jaspreet Singh

John D Terry

Syed Nadeem Ahmed

Ron Passerini

Ankit Gupta

Yaming Zhang

Hersh Vardhan Shukla

Ajay Nigam

Tarak Taranekar

Ajit Ashok Joshi

Omar El Ayach

Eun Tae Won

Baowei Ji

Jiann-An Tsai

Kiran Bynam

Minwen Ji

Sidney Brower Schrum, Jr

Gary Xu

Pardeep Kohli

Robert W Monroe

Doyoung Kim

Jin Yuan

Jaeseung Son

Pavan Nuggehalli

Marc Sevigny

Charles Santhosam Lourdu Raja

Ronald Passerini

Eddie Ma

Bill Semper

Rostislav Vavrick

Rasiklal Kachhla

David Brenner

Manoj Krishnan

Sarbeswar Mohapatra

Sung Joon Maeng

Shadi Abu-surra

Lee Bradshaw

Richard Stirling-gallacher

Manoj Krishan

Abu-Surra Shadi

Robert Monroe

A method of generating and applying combining weights to Physical Uplink Shared Channel (PUSCH) symbols for Open Radio Access Network (O-RAN) fronthaul interface between O-RAN radio unit (O-RU) and O-RAN distributed unit (O-DU) includes: calculating, by the O-DU, a codebook; sending, by the O-DU, the codebook to O-RU; generating, by the O-RU, an RU combiner matrix, using the codebook; applying, by the O-RU, the RU combiner matrix to In-phase and Quadrature (IQ) data to generate compressed IQ data; sending, by the O-RU, the compressed IQ data to O-DU; calculating, by the O-DU, a DU combiner matrix from compressed demodulation reference signal (DMRS); and applying, by the O-DU, the DU combiner matrix to data.

Method for enabling efficient MIMO processing for O-RAN fronthaul interface in cloud RAN systems

A system is provided for at least one of testing and validating at least one Open Radio Access Network (O-RAN) remote radio head (RRH) present for installation at an installation site having no network connectivity to the RRH available, which system includes a network emulator configured to at least one of test and validate at least one of a device parameter and a functional parameter of the at least one RRH when selectively coupled to the at least one RRH. The network emulator is configured to be selectively coupled to a user equipment (UE) configured for displaying the at least one of the device parameter and the functional parameter of at least one RRH, and wherein the network emulator is one of 1) directly coupled to the at least one RRH, or 2) connected to the at least one RRH via a cell site router (CSR).

Method and apparatus for testing and validating an open RAN based fronthaul site without network connectivity

There is provided a method of operating an Open Radio Access Network (O-RAN) having an O-RAN radio unit (O-RU) and an O-RU controller. The method includes sending, from the O-RU to the O-RU controller, (i) a message informing that the O-RU supports a feature such as (a) a plurality of delay management profiles, and/or (b) a plurality of transmission window sizes, and (ii) a report of capabilities of the O-RU, where the report includes a parameter such as (a) a quantity of supported delay management profiles, (b) supported window sizes for each of the plurality of delay management profiles, and/or (c) a supported window offset for each of the plurality of delay management profiles. The O-RU controller configures the O-RU based on the feature and the parameter.

Traffic timing control for an open radio access network in a cloud radio access network system

A method of handling communication traffic from one or more User Equipment (UE) in a Cloud Radio Access Network (CRAN) network includes: analyzing, by an analytics engine in the CRAN network, communication traffic distribution and loads across multiple cell sites; and determining, by the analytics engine, an optimal mapping of one of a specified cell site or a selected sector of a specified cell site to one of a specified virtual machine or server. Communication traffic from a sector of a first cell site having a first type of traffic load profile and communication traffic from a sector of a second specified cell site having a second type of traffic load profile are aggregated by a single specified virtual machine or server.

Method and apparatus for balancing server load in cloud RAN systems

There is provided a system, method, and interfaces for Radio Access Networks and Cloud Radio Access Networks.

Method and apparatus for long term evolution operation in unlicensed and shared spectrum for cloud radio access networks

A cloud radio access network (CRAN) system includes a baseband unit (BBU) and a radio unit (RU) remote from the BBU. The fronthaul interface between the RU and the BBU includes a radio frequency interface (RF) functionality implemented in the RU, and implementation of physical layer (PHY) functionality split between the BBU and the RU, including downlink (DL) resource element mapping and DL precoding implemented in the RU. Transmission of reference signals from the BBU to the RU is implemented separately from transmission of data from the BBU to the RU. The RU caches the transmitted reference signal based on at least one of subframe, symbol, xRAN resource block (XRB) and resource element (RE) associated with the reference signal. The fronthaul interface supports at least one of: (i) narrow band Internet of things (NB-IoT) physical random access channel (PRACH), and (ii) NB-IoT multi-tone format on physical uplink shared channel (PUSCH).

Method and apparatus for fronthaul compression in cloud RAN

There are provided systems, methods, and interfaces for optimization of the fronthaul interface bandwidth for Radio Access Networks and Cloud Radio Access Networks.

System and method for reduction in fronthaul interface bandwidth for cloud RAN

A user equipment (UE) and base station (BS) in a wireless communication network. The UE includes a receiver configured to receive at least one semi-persistent scheduling (SPS) configuration among a plurality of SPS configurations from a BS. Each of the SPS configurations configures the UE with a different periodicity of a sidelink transmission to be transmitted to another UE. The UE also includes a transmitter configured to transmit the sidelink transmission in the different periodicity according to the at least one of the plurality of SPS configurations. The BS includes a controller configured to select at least one SPS configuration among a plurality of SPS configurations for a UE. Each of the SPS configurations configures the UE with a different periodicity of a sidelink transmission to be transmitted to another UE. The BS also includes a transmitter configured to transmit the selected at least one SPS configuration to the UE.

Method and apparatus for transmission of control and data in vehicle to vehicle communication

There is provided a system that includes a local cloud radio access network (RAN), and a remote cloud RAN. The local cloud RAN processes latency-sensitive applications, and the remote cloud RAN processes latency-tolerant applications. User traffic is appropriately routed to the correct cloud RAN based on the application. User equipment (UE) has no knowledge of which network is being used for processing, i.e., this network processing split is done in a manner that is transparent to the UE, e.g., by dynamically selecting a different access point name for local vs. remote processing. The processing split of the RAN between the local cloud RAN and the remote cloud RAN is done in a dynamic manner depending on the number of devices requiring low latency support. This allows the local cloud RAN to be very compact and low-cost since it does not have to process the latency-tolerant traffic.

System and method for supporting low latency applications in a cloud radio access network

A cloud radio access network (CRAN) system includes a baseband unit (BBU) and a radio unit (RU) remote from the BBU. The fronthaul interface between the RU and the BBU includes a radio frequency interface (RF) functionality implemented in the RU, and implementation of asymmetrical physical layer (PHY) functionality split between the BBU and RU. The asymmetrical physical layer (PHY) functionality split includes: downlink (DL) antenna port mapping and DL precoding implemented in the RU; and the split of the PHY functionality for uplink (UL) at the antenna port mapping in the BBU. For the DL, precoding and resource element (RE) mapping to frequency resources is implemented in BBU, and RE mapping for antenna ports is implemented in the RU|[WA1]. The split also provides support for license-assisted access (LAA) in the CRAN system.

Method and apparatus for flexible fronthaul physical layer split for cloud radio access networks

Methods and Apparatuses for a transceiver calibration and antenna array operation in a multi-input multi-output (MIMO) system. One of the methods for operation of one or more of the apparatuses comprises sending a calibration signal and a pre-designed training sequence, via a coupling network, receiving a calibration signal and a pre-designed training sequence that is sent by the transceiver array in a time slotted pattern via a coupling network, generating an Rx calibration measurement (R) based on one or more uplink signals received via antenna array and the coupling network, generating a Tx calibration measurement (T) based on receipt of the calibration signal from each of antennas via the coupling network; and performing a joint Tx/Rx (TRx) calibration based on HR, R, and T, where H is a channel response in air interface, R is a channel response of receivers in transceiver array.

Methods and apparatus for calibration and array operation in advanced MIMO system

A relay node capable of supporting wireless backhaul communication includes a controller configured to identify a first timing of a backhaul downlink (DL) transmission and a second timing of an access uplink (UL) transmission to be substantially aligned, and a transceiver configured to receive at least one first symbol in the backhaul DL transmission from an base station (BS), and receive at least second symbol in an access UL transmission from a user equipment (UE). The controller is further configured to substantially align a third timing of a backhaul uplink (UL) transmission and a fourth timing of an access downlink (DL) transmission, wherein the transceiver is further configured to transmit at least third symbol in a backhaul uplink (UL) transmission to the BS, and transmit at least fourth symbol in the access DL transmission to the UE.

Frame structures and signaling techniques for a unified wireless backhaul and access network

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Plano, TX, United States of America

Sridhar Rajagopal