The present invention relates to broadband wireless networking systems and more particularly to dynamically adjustable wireless transmission systems.
The available Radio Frequency (RF) spectrum continues to become increasingly crowded, in part due to the rapidly growing demand for wireless solutions to the “last mile in the loop” distribution problem. Subscribers located in a number of pockets of coverage, particularly certain urban areas, share modest amounts of bandwidth and experience limited bandwidth availability. Moreover, power in the frequencies allocated for point-to-point and point-to-multi-point RF use often has to be reduced to avoid interfering with adjacent frequencies servicing microwave routes and cellular networks.
There is a need for a point-to-point and point-to multi-point RF systems that makes better use of the limited available frequencies, and preferably a system that can operated at power levels that do not interfere with adjacent microwave signal.
The licensed microwave radio multi-functional broadband system of this invention overcomes the above identified disadvantages by providing a dynamic central-to-remote management system and multiple edge smart wireless hubs. Phase Shift Keying (QPSK) and Orthogonal Frequency Division Multiplexing (OFDM) allowing frequency reuse. In a preferred embodiment, the system also automatically selects between point-to-point antennas, point-to-multipoint antennas arranged in typically six equal 60° degree sectors, and an omni-directional broadcast antenna The system of this invention also includes an intelligent data IP packet measurement system that dynamically determines and controls the network Quality of Service [QoS] through software. The automated control may include throttling power up and power down to meet changing effects of transmission parameters in substantially real time.
In a preferred embodiment, the transmitting antenna system has as many as six orthogonal sector antennas for radiating RF signals, as well as point-to-point parabolic antennas and an omni-directional broadcast antenna. Furthermore, the system is capable of automatically receiving and transmitting at least three types of modulated signal types, namely QAM, QPSK, and OFDM, to optimize transmission based on parameters such as path distance, bandwidth, and quality of service [QoS] in point-to-point and point-to-multipoint RF links.
In a preferred embodiment, the system also has one or more remote smart edge wireless hub capable of receiving and transmitting the preferred signal types, namely QAM, QPSK, and OFDM modulated signals. The remote smart edge wireless hub antenna system is also capable of adjusting polarizations orthogonally to achieve minimum crosstalk and maximum isolation from adjacent frequency interferences, and may also transmit and receives RF signals over different path and carrier frequency to establish two or more RF paths.
In a preferred embodiment of the invention, each RF transmitting and receiving channel is coupled to a payload Internet Protocol (IP) switch. The microcontroller associated with the pro-band core microwave radio contains the lookup file database and uses it to maintain strict control of the network, the IP payload data, and the smart edge wireless hubs.
The system provides for a variety of one-way and two-way communications services, including connectivity to Wi-Fi access points, private and public Internet access, IP video streaming, and voice using internet protocol (VoIP) and emergency or public services channels. Dynamic bandwidth control is employed along with very fast payload switch routing using quality of service (QoS) monitoring and selection circuitry. Using fast packet switching, the system has the ability to select the error encoding algorithm, RF path route diversity, polarization, frequency diversity and modulation type, to achieve a desired QoS requirement, which it can measure and verify. The systems user roaming channel is always on hot and ready to respond by accepting a user request for broadband service, as a user jumps on and off at will controlled through a pre-registered access user authentication code lookup file that automatically identifies the user upon its first entry when logging onto the system at any point in the network.
The smart edge hub controller allows pro-band users to request and dynamically change a destination address and bandwidth requirements per user needs in virtually real time from Data Grid Gateways. The Data Grid Gateway setup provides bandwidth and destination information of the requesting subscriber. The user can enter or exit at will. The data packet destination cell carries at all times, an authorization key code that is pre-assigned and opens an available RF channel embedded in assigned radio bandwidth and transmission frequency.
During the course of this description like numbers will, as far as possible, be used to identify like elements according to the different figures, which illustrate the invention.
To understand the invention it is easiest to focus on the smallest common element, namely, the single data grid comprising a pro-band core microwave radio and system core-micro-controller and internet protocol (IP) switch and a smart edge wireless hubs, as illustrated in
A block diagram schematic of a preferred embodiment of the transmitters and receivers is illustrated in
The signals arrive at the receiving smart edge wireless hub antenna and, depending upon the modulation scheme selected, each signal can be selected remotely by the pro-band core microwave radio core microcontroller, depending upon the quality of service (QoS) received in both directions of transmission. Typical performance includes the two operating modulation schemes depending upon distance between the smart edge wireless hub and pro-band core microwave radio, is selectable by the core microcontroller.
When a smart edge wireless hub is placed in service a relative short distance from the pro-band core microwave radio, the signal is typically selected to have QAM or QPSK modulation so as to provide maximum possible payload transfer (bandwidth). A smart edge wireless hub located a longer distance from the core-radio would, however, operate using yet another modulation and encoding type that has and extended range but may have less bandwidth availability such as, but not limited to, OFDM. Refer to
RF signals arriving at site D receiver enter into the smart edge wireless hub reaching a receiver detector where composite signal detection takes place and IP payload content is decoded in the form of IP packet data. After extraction, these packets are aligned according to IP address code carried in the header located within the data formatted packet. Data directed over routes linking sites C, D back to the pro-band core microwave radio are switched automatically, dependent on actual load on each radio path and available bandwidth availability. The incoming signal and resultant retrieved packets all arrive within milliseconds of each other and delay is considered negligible. The QPSK/QAM transmit RF frequencies transmitted to a smart edge wireless hub are never greater than two, one applied to horizontal and a second to vertical polarizations. During the initial RF path setup and testing sequence, the controller will exercise tests of all frequencies and transmission types and log the results in database.
Now turning to
A primary RF channel transports normal payload IP data traffic while operating on horizontal polarization with separate assigned frequencies, and while the secondary RF channel operates on vertical polarization being assigned a different frequency; both channels are controlled through the micro controller and payload IP switch located at the pro-band core microwave radiolocation. This extended bandwidth is separated into individual payload nodes, providing part time and full time access for services. The pro-band core microwave radio operating with virtually any number of smart edge wireless hubs provides several unique and separate expansions and use of microwave radio bandwidth to accommodate subscribers as listed in the following table:
Illustrated in
Now turning to bandwidth expansion using a secondary channel, this function is achieved with the present invention more economically and essentially with the same antenna systems that support a second RF channel very easily and with limited new expense. Now again turning to
Cipher-lopes are electronic secured packets of data that are highly secured through packet-coded keys, assembled in highly secured sealed electronic digital packets of IP data that are coded close, and sent over the above link to highly secure the data content. Should the packed ever be opened during transit, a flip-flop logic circuit will leave a sign of the intrusion and breech of security. The RF path is constructed in physical form to provide full path and system diversity through two RF links. The two data paths reach their secured environment only in an proper protected environment where the two keys match a series of ever changing digital coded word in the form of management instructions and only after being fully exercised and tested with these digital words are these words allowed to be used to de-cipher and assemble the packets of data at the receiving station, demanding duly authorized code to open and detect the content.
Turning once again to
Links from the pro-band core microwave radio-connecting cluster of
Drawing configurations
This security level can be utilized for IP security of any sort, outside Cipher-lopes applications. Voice over IP (VoIP) and video digitized content can be provided a higher level of security on the licensed radio band.
Now turning to
Frequency reuse is employed in each edge smart wireless hub to expand the capacity of each pro-band core microwave cluster.
Turning to
Now turning to
The IP 28 Ethernet signal passes through the transmit interface to a stage called IP data switch 5, where the packet address headers are detected and read and the IP packet signal routed thru. The common channel is aligned throughout each and every site, thus originating a seamless hot roaming channel, as well as an emergency community channel and dynamic load control channel that operates in each and every outlying smart edge wireless hub. Security of these channels is set up according to the cipher-lope standard of operation, rendering all site bandwidth to be highly secured for both the primary and secondary channels.
As illustrated in
The embodiments of the invention described above provide a licensed microwave radio multi-functional broadband system that includes dynamic central to remote management system having multiple numbers of installed edge smart wireless hubs. The system is capable of selective transmission type QAM, QPSK and orthogonal frequency division multiplexing system for broadcast over point-to-point, point to multipoint and omni-directional antenna arranged in six equal 60° degree arrays.
There is also an intelligent data IP packet measurement system through software dynamically reads and controls Quality of Service [QoS] and throttles power up and power down to meet changing effects of transmission parameters in virtual real time.
The system has receiving remote antennas capable of changing polarization settings to allow frequency reuse, and with programmable receive low noise block (LNB) filters to minimize adjacent RF signal cross talk.
The system's antenna system has a six sector antenna stage, and an antenna that applies QAM and QPSK modulation selection automatically, depending to achieve the desired path distance, bandwidth, and quality of service [QoS].
In one embodiment of the system, the antenna array combines flat panel and parabolic antennas together to serve QAM, QPSK and OFDM RF transmission.
In another embodiment of the system the transmitting antenna system includes a remote smart edge wireless hub capable of receiving and transmitting three formats, QAM, QPSK and OFDM signals in the same mechanical antenna.
In one embodiment of the system, a remote smart edge wireless hub antenna system adjusts polarizations orthogonally to achieve minimum crosstalk and maximum isolation to lower adjacent frequency interferences.
In one embodiment of the system a remote smart edge wireless hub antenna system that transmits and receives RF signals of different path alignment and carrier frequency types to establish two independent RF paths.
In one embodiment of the transmitting and receiving system there is a primary RF channel A linking local and remote smart end wireless hubs for IP data traffic, and a secondary RF channel B linking for user roaming hot-on. There may also be a secondary RF channel B for emergency community channel service and for dynamic load control.
In one embodiment of the invention, there is also a dynamic RE re-routing in ring configuration system that includes a network RF path direction that can be redirected upon failure of the primary RF path or secondary RF path on a seamless basis.
In one embodiment of the invention there is a network RF path sending data over an RF network with data content divided into two or more paths to support cipher-lope highly secured content by sending setup/takedown code in direct path and content in second and longer path.
One embodiment of the invention includes a physical encapsulated packet that contains a header referenced to activate an onboard physical circuit flip/flop control to indicate packet-tampering status.
A further embodiment of the invention includes a secured encapsulated packet management system that reads status at a physical point along the transmission path in virtual real time, and with electrical / physical circuit status.
In another embodiment of the system the pro-band core microwave, microcontroller, and IP switch includes a user time-share of bandwidth on a part time basis on 7×24×365 time having access at any smart edge wireless hub location. There is also provision for a user, or multiple users, to have time-share access to emergency channel use in case of local emergency or local and national disasters.
In a further embodiment of the system the pro-band core microcontroller and IP switch includes a bursting data stream up-link and down link from the smart edge wireless hub to and from the pro-band core microcontroller and IP switch to measure QoS and make system equipment adjustments to outlying equipment power, polarization, switching modulation types for management of pro-band core network.
There may also be a system setup for establishing a data grid around the pro-band core microwave and multiples smart edge wireless hubs that provide exclusive and non-exclusive security services in the form of security surveillance cameras, door/window alarms or other entrance locks and including proximity alarms, remote alarms, temperature controls, fire and water alarms that report to distributed or centrally located points.
In one embodiment the pro-band core microcontroller and IP switch and smart edge wireless hub controller includes an enhanced forward error correction coded algorithm signal monitors IP data performance for errors, dropped packets, noise on transport facilities, as well as capability for the system processors to transfer payload onto a pre-selected alternate route.
There may also be a load balancing control capable of determining when routing IP packets from primary channel are at or near maximum load, and then ensuring that packets are routed over secondary channel for dynamic load control and to add bandwidth.
In a further embodiment of the system the pro-band core microcontroller and IP switch and smart edge wireless hub controller includes a roaming secondary channel dedicated to permanently un-numbered smart edge wireless hubs covering an entire metropolitan area network.
There may also be a secondary channel dedicated to permanently open connectivity for emergency use throughout a metropolitan area network providing a private channel for communicating and sending data in emergency conditions.
In one embodiment of the system two smart edge wireless hubs may operate as a master smart edge wireless hub configured as master controller and a slaved smart edge wireless hub configured as slaved to extend IP service between two locations.
There may also be a master smart edge wireless hub-A location configured as master controller and a slaved smart edge wireless hub-B location, each configured with two antennas that communicate between each smart edge wireless hub A to B and to pro-band core microwave radio, micro controller, and payload switch.
The pro-band core system delivers a variety of one and two-way communication signals carrying multi services of private and public Wi-Fi networks, and digital two-way transmission with internet content, IP video, data and voice [VoIP] packets using IP internet protocol
While the invention has been described with reference to the preferred embodiment thereof, it will be appreciated by those of ordinary skill in the art that various modifications and changes can be made to the structure and functions of the individual parts of the system without departing from the spirit, and scope of the invention as a whole.
The present invention has industrial applicability to the telecommunications industry. In addition, the present invention is suited to use in the industries of communications service provision, including cellular and data communications. The present invention is also suited for use in the emergency service industry.
Number | Date | Country | Kind |
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60513419 | Oct 2003 | US | national |
This application is related to, and claims priority from U.S. Provisional Patent application No. 60/513,419 on Oct. 22, 2003 by Ward et al. titled “Wireless Broadband Licensed Networking System for Local and Wide Area Networking”, the contents of which are hereby incorporated by reference.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/US2004/035383 | 10/22/2004 | WO | 00 | 6/9/2008 |