Alcatel Lucent

Nokia Solutions and Networks Oy

Lucent Technologies Inc.

Alcatel-Lucent USA Inc.

Nokia Technologies Oy

Stevens Institute of Technology

Alcaltel Lucent

Milind Madhav Buddhikot

Scott Corey Miller

Mohammad Riaz Khawer

Luca Salgarelli

Girish P Chandranmenon

Seung-Jae Han

Yui-Wah Lee

Jignesh Shantilal Panchal

Katherine Hua Guo

Adiseshu Hari

Kundan Singh

Li Erran Li

Subhash Suri

Stepan Kucera

Kevin Ryan

Paul Kolodzy

Youngsu Chae

Harish Viswanathan

Ramachandran Ramjee

Paul Anthony Polakos

Peter Bosch

Juan A Garay

Thierry E Klein

Navin Hathiramani

Dragan Samardzija

Charles Payette

David Abusch-Magder

Susan Walker

Sayandeep Sen

Kariem Fahmi

Tan Zhang

Stephan Litjens

Yijing Zeng

Kutlay Erman

Sebastian Yandun

Chandra S Chekuri

Anand Prabhu Subramanian

Mahmoud Al-Ayyoub

Himanshu Gupta

Lance Hartung

Susan J Walker

Thierry Etienne Klein

A spectrum access system (SAS) includes a transceiver configured to receive a registration request from a first base station in response to the first base station being installed. The SAS also includes a processor configured to allocate a channel in a shared spectrum and a transmission power to the first base station. The transceiver is configured to transmit a test grant authorizing the first base station to transmit on the channel at the transmission power for a predetermined time interval. The test grant is converted to a suspended grant following the predetermined time interval. In some cases, the transceiver is configured to receive the registration request from the first base station in response to the first base station being installed in a protection area.

Test grants for base stations installed in protection areas

A first spectrum access system (SAS) instance receives a message (such as a heartbeat message) including an identifier of a first base station that is not registered with the first SAS instance. The first SAS instance accesses a database that is shared with a second SAS instance and periodically synchronized with the second SAS instance. The first SAS instance provides an SAS service that was previously established between the first base station and the second SAS instance in response to the database including a record generated by the second SAS instance for the first base station. The first base station registers to provide connectivity in a shared spectrum using the SAS service provided by the second SAS instance. The first base station transmits the message to the first SAS instance including an identifier of the first base station in response to the second SAS instance becoming unavailable.

High availability access to shared spectrum using geo-redundant spectrum access systems

An apparatus such as a domain proxy implemented in an edge cloud of a private enterprise network includes a processor configured to aggregate traffic for Citizens Broadband radio Service Devices (CBSDs) in a private enterprise network. The apparatus also includes a transceiver configured to monitor communication with geo-redundant instances of a spectrum access system (SAS) that allocate frequency bands in a shared spectrum to the CBSDs. The processor is configured to instantiate a local SAS in response to the geo-redundant instances of the SAS becoming unavailable. The local SAS is configured to respond to heartbeat messages from the CBSDs. The local SAS is also configured to attempt to establish a connection with an environmental sensing capability (ESC) in response to the geo-redundant SASs becoming unavailable.

Enhanced network availability for private enterprise networks in shared spectrum systems

An apparatus () includes a transceiver () configured to establish a connection with a spectrum access server (SAS) () and a processor () configured to monitor a status of the connection. The processor () is also configured to modify the connection to the SAS () in response to the status indicating a possible failure of the connection. The processor () modifies the connection prior to expiration of a timeout interval for the connection to the SAS (). The apparatus () is a Citizens Band Service Device (CBSD) (-) or a domain proxy (DP) () that aggregates messages for multiple CBSDs.

Highly available radio access network in a shared spectrum

A domain proxy receives a request from a base station for allocation of a first portion of a frequency band to support cellular communication in a geographic area that is indicated in the request. The frequency band is available for exclusive allocation to an incumbent device. The base station is required to vacate the first portion of the frequency band in response to the incumbent device arriving in the geographic area and being allocated a second portion of the frequency band that overlaps with the first portion. The domain proxy accesses a policy for the base station from a database and, based on the policy, selectively provides the request to a spectrum access server (SAS) that is responsible for allocating portions of the frequency band.

Managing access to a shared spectrum using a domain proxy

According to an example embodiment, a method may include sending, by a wireless node to a spectrum access controller, a request, including information indicating at least a location of the wireless node; receiving, by the wireless node from the spectrum access controller, information indicating at least one restricted channel for the wireless node and indicating at least one unrestricted channel for the wireless node within a shared frequency band; wherein the wireless node is prohibited from transmitting signals via the at least one restricted channel if the wireless node is in an unregistered state with respect to the spectrum access controller; and wherein the wireless node is permitted to transmit signals via the at least one unrestricted channel regardless whether the wireless node is in the registered state or the unregistered state with respect to the spectrum access controller.

Registered and unregistered operation for shared band wireless nodes within wireless networks

A base station establishes a wireless connection in a first portion of a frequency band with a user equipment located in a first geographic area. The first portion is allocated to an operator of the base station in response to a request transmitted to a spectrum access server (SAS). The user equipment is handed over from the first portion to a second portion of the frequency band in response to detecting presence of an incumbent that is allocated a third portion of the frequency band for exclusive use within a second geographic area that overlaps with the first geographic area. The third portion overlaps with the first portion. The second portion is allocated to the operator in response to the request. The first portion and the second portion are separated by a frequency bandwidth that is larger than a threshold determined based on a frequency bandwidth allocated to incumbents.

Shared spectrum with high availability for private enterprise networks

A spectrum access system (SAS) grants one or more channels of a shared spectrum to a base station, e.g., in response to receiving a registration request from the base station. The SAS increments a usage of a connection between the base station and the SAS in response to the SAS receiving information indicating that the base station has an active connection with the apparatus during a service time interval. The processor does not increment the usage if the base station does not have an active connection with the apparatus during the service time interval. In some cases, the active connection is indicated by heartbeat messages exchanged between the base station and the SAS. A customer associated with the base station is charged a cost based on the usage determined by the SAS.

Flexible charging mechanism for shared spectrum usage

A method and system is described in which a client device comprises a memory arranged as a user space and a kernel space. One operation comprises providing in the user space a user space control module for receiving one or more application calls destined for the kernel space. Another operation comprises receiving by the user space control module an application call for requesting data transmission using one or more kernel space network services. Another operation comprises implementing the requested data transmission over multiple paths from the client device under the control of the user space control module.

Multi-path data communications

MPTCP connections and their corresponding TCP subfiows are routed by a load balancer toward backends. Each MPTCP connection is routed to a single backend and is able to include primary and secondary TCP subfiows. Routing includes performing, responsive to setting up a primary TCP subflow of an MPTCP connection, load balancing of the connection to select a backend for the connection. The MPTCP connections and their TCP subflows are tracked by the load balancer to route the MPTCP connections and their corresponding TCP subfiows to corresponding selected backends. A backend determines whether a request by a client to set up a primary TCP subflow of an MPTCP connection already includes a key used to generate a token used to uniquely identify the MPTCP connection from other MPTCP connections. The backend generates the token based on the key. The backend uses the token to distinguish subsequent communications for the MPTCP connection.

Designs of an MPTCP-aware load balancer and load balancer using the designs

First user equipment transmits information identifying first interfaces supported by the first user equipment and first channel capacities associated with the first interfaces. The first user equipment receives information identifying a subset of the first interfaces. The subset is selected based on the first channel capacities and second channel capacities of second interfaces associated with at least one second user equipment. The first user equipment is then configured to aggregate the subset of the first interfaces. A policy server selects a subset of first interfaces supported by a first user equipment based on information indicating first channel capacities of the first interfaces and second channel capacities of second interfaces associated with at least one second user equipment. The policy server transmits instructions to the first user equipment to aggregate the subset.

Interface aggregation for heterogeneous wireless communication systems

A client and a server communicate over multiple wireless access paths each using a different wireless network. A method performed at the server comprises receiving at the server a signal from the client via one of multiple wireless access paths, the signal comprising a transport layer portion including a transport layer identifier, the transport layer identifier providing an indication of a wireless access path, a network layer portion, and a data portion, determining from the transport layer identifier, a destination of at least a subset of the signals from the wireless access path indicated by the transport layer identifier, and routing the signal to the destination. If a flow is diverted to travel via a different route, then there must be some mechanism to ensure that the signal arrives at its intended destination. Preferably, a Multi-path Transport Control Protocol (MPTCP) is used as the transport layer protocol.

Multi-path wireless communication

A method and system for coordinated dynamic access to radio spectrum for wireless networking includes defining a coordinated access band (CAB) from which radio access network (RAN) managers may request spectrum allocations in the form of time bound spectrum leases for their respective requesting base stations. In one embodiment of the present invention, a DIMSUMnet architecture is implemented to make some fundamental choices and to centralize the collection of information, such as spectral occupancy, thermal and adjacent frequency interference. Such collected information is subsequently used by a spectrum broker in making spectrum allocation decisions. The DIMSUMnet architecture of the present invention also introduces a RAN manager element to centralize the task of acquiring time bound spectrum leases and for configuring the base stations.

Method and system for wireless networking using coordinated dynamic spectrum access

A method and an apparatus is provided for conducting wireless data communications using whitespace and non-whitespace channels. A short-range base station with an interface for whitespace channels and another interface for non-whitespace channels communicates with user equipment outfitted with equivalent interfaces. The short-range base station has a preference for using the interface for the whitespace channels, where the whitespace channels are whitespace spectrum bands that are available during periods when a primary user is not actively utilizing the whitespace. A spectrum server analyzes spectrum occupancy database information and whitespace spectrum sensing measurements to determine lists of available whitespace spectrum bands for use by the short-range base station.

Method and apparatus for wireless communication using a short-range base station with multiple radio interfaces of different technologies

According to a disclosed method, an MME in a network analyzes KPIs from the cells it serves and based on the KPIs, it decides to engage in sharing. The MME then contacts a sharing entity (SE) to announce that it wants to borrow or to supply resources. The MME obtains terms of a sharing agreement from the SE and the MME obtains the identity of the other network. In response to this information, the MME configures its network elements to share. The MME's own network may be a supplier or a borrower. If the network is a supplier, the MME configures its base stations to support UEs subscribing to the other network. If the network is a borrower, the MME configures its UEs to accept service from the other network's base stations. The SE applies knowledge of network topology and of services offered. This knowledge is obtained from a sharing database. At the expiration of the sharing agreement, the SE tells the MMEs to deactivate the sharing agreement.

Dynamic resource sharing among cellular networks

Growing community of inventors

Cliffwood, NJ, United States of America

Milind Madhav Buddhikot