Short range RF network
A network including a host device and a plurality of transceiver beacons for communicating data from terminal devices interacting with the beacons, to the host. The beacons include identification codes used by the host for establishing wireless communication links either between a beacon and the host, or between two or more beacons. A routing mechanism is included in the beacons for selecting a most favorable transmission path among available paths for communicating data to the host.
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This is a continuation of patent application Ser. No. 09/614,508 filed on Jul. 11, 2000.
BACKGROUND OF THE INVENTION1. Field of the Invention
The present invention relates to local communication networks and, more particularly, to a short range RF network having dynamic routing and configuration capabilities.
2. Description of the Related Art
The availability of various types of communication devices produces a need to have these devices interact with each other in a manner which is cost efficient and which can be easily implemented. Such communication can occur between two or more terminal devices (e.g. telephones, computers, printers, facsimile machines, personal digital assistants (PDAs), etc.) by wired connection such as by connecting electrical conductors to the devices, or by wireless communication using infrared signals or radio frequency (RF) signals. For many applications, RF signals are preferred as they do not require line-of-sight interaction between a transmitter and a receiver of a terminal device pair.
Recently, low power RF systems have been proposed for providing communications between a plurality of transceivers through a short range link having a broadcast range of several meters. One such local RF system is currently under development and is referred to as “Bluetooth”. This system will be commercially available in the near future and is designed to operate in the open spectrum around 2.4 gigahertz. The system operating in accordance with the Bluetooth specification will allow for devices such as mobile phones, computers, and other types of terminal devices which are located within an operable range of the RF system to communicate with each other.
Wireless relay networks also exist which, in effect, extend an operating range of a local RF system by utilizing relay devices to interface with and provide communication between two or more terminal devices. Such a network is disclosed in PCT Application No. WO 98/17032 wherein a plurality of communication nodes are wirelessly connected to each other and to a host device for providing numerous communication links for data to be communicated between the host and terminal devices interfaced with the nodes. A drawback of such a system, however, is that it does not provide for the efficient use of multiple available transmission paths to select, for example, the path that contains the least amount of data traffic at any given time and hence the fast transmission time.
SUMMARY OF THE INVENTIONThe present invention is directed to a short range RF network having routing capabilities for communicating data between one or more terminal devices and/or a host among a select one of a plurality of communication paths. The inventive network includes a plurality of wireless transceiver beacons and a host device. The communication paths are established between the plurality of beacons and the host when the beacons are identified to the host. The communication paths are direct or indirect between two beacons or between a beacon and a host such that a select beacon may communicate directly with a host or indirectly through one or more intermediate beacons. Some or all of the beacons include a processor for determining, prior to transmission of data, the most-desired communication path among the plurality of paths. In this manner, the speed of data transfer to and from the host can be increased by dynamically selecting through the transmitting beacon, a most-desired communication path from a plurality of available communication paths based on an amount of data traffic handled by the network at any given time.
In a preferred embodiment the inventive short range RF network includes an intermediate beacon connected between an upstream beacon and a downstream beacon and means for routing the upstream beacon to the downstream beacon in the event the intermediate beacon malfunctions or otherwise becomes disabled.
Other objects and features of the present invention will become apparent from the following detailed description considered in conjunction with the accompanying drawings. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention, for which reference should be made to the appended claims. It should be further understood that the drawings are not necessarily drawn to scale and that, unless otherwise indicated, they are merely intended to conceptually illustrate the structures and procedures described herein.
BRIEF DESCRIPTION OF THE DRAWINGSIn the drawings, wherein like reference numerals denote similar elements throughout the several views:
An illustrative embodiment of a short range RF network 10 constructed in accordance with the present invention is illustrated in
As shown in path 16b, certain beacons establish multiple communication links through which communication with the host 12 can occur. For example, beacon 14b3 can communicate with beacon 14b1, and, ultimately, with host 12 through either beacon 14b2 via intermediate paths 20b2 and 20b4 or through beacons 14b4 and 14b2 through intermediate paths 20b1, 20b3 and 20b4. As explained below, the ability to communicate along a select path from a plurality of available paths is desirable to regulate data traffic flow and increase data transmission rates.
The host 12 is responsible for routing data to the beacons in the network 10 and may interface the network 10 with an external network 4,.such as the Internet, in a manner well-known to those having ordinary skill in the art to allow communication, for example, with a service provider of the network. For example, the interface can be via fiber optic or other “hard-wired” connection schemes, wireless low power RF connections (e.g. Bluetooth), cellular connection, infrared and modem. The host 12 may be a personal computer having low power RF communication ability including custom designed software for network administration. Alternatively, the host 12 can be a beacon which is designated to function or operate as a host and may be separately controlled by a remote server 6 which operates or runs software to allow the host 12 to function in an intended manner. The host and/or host with remote server 6, serves as a central maintenance unit for storing a running inventory register of beacons, as explained below, to which the host is connected, as well as the manner in which the beacons are connected to each other, e.g., through direct links 18a, 18b, 18c or indirect links 20. The inventory register can be based, for example, on Bluetooth device addresses. The host 12 may also serve as a gateway such as when an Internet connection is provided. In this event, the host will be treated by the Internet as having an associated IP address. Moreover, the host 12 can interface with one or more additional hosts (illustrated, for example, as host 12a and host 12b in
The beacons 14 are relatively small, portable transceiver devices which communicate data between themselves and the host 12 along direct links 18 and indirect links 20 of communication paths 16 in the network 10. A detail of a preferred beacon device 14 is illustrated in
With reference to
In a most preferred embodiment shown in
The beacons 14 may be configured for receiving operational power from battery cells, solar power or other wired/wireless power sources, or may include an electrical power interface 22 as shown in
With reference now to
Once the code is conveyed, the beacon will be incorporated in the network 10. After the address is known, the beacon can be taken to a desired location and activated such as by interfacing with an electrical outlet or other power source. This will commence low power RF transmission to locate a neighboring host and/or a neighboring beacon and establish direct links 18 or indirect links 20. Thus, and as shown in the process of
With reference now to
The beacons 14 can be used as a position reference for mobile devices as well as for other beacons in the network and will provide communication between a mobile device and a beacon or host or another terminal device connected to the network. For example, and as shown in
In the multihost network system 100 shown in
Specifically, once a particular beacon is connected to or “paired” with a specific host or another beacon already paired with the specific host, the particular beacon will only communicate with beacons and/or the specific host that are in a common network. This feature is illustrated in the multi-host network of
It will be appreciated that the terminal devices 40 are preferably mobile communication devices such as mobile telephones and are capable of changing their locations during normal use as the devices move throughout the network. Thus, although terminal device 40a2 is shown in
Some or all of the beacons can also include functionality to operate independently of the network 10 and to communicate with mobile devices to provide or receive stored information. For example, a mobile device such as a telephone can transmit contents (e.g., a message) to a beacon for storage and forwarding to the host for processing. Likewise, a beacon positioned in a specific location (e.g., a hotel lobby, etc.) may contain stored data for transmission to mobile telephones that are present in the beacon coverage area. Such a function can be useful in advertising or for information purposes where a position of a mobile telephone can be detected through communication with a particular beacon, which will then access stored information or information obtained from the network or from the Internet 4 and transmit the information, such as an advertisement, to the mobile telephone.
The network 10 provides for the transfer of data among the beacons and the host in a most expeditious and efficient manner due to the ability of the beacons to determine a most preferred transmission path based on the current data traffic along the various direct and indirect links. This feature is illustrated in
With additional reference to
Thus, while there have shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements and/or method steps which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.
Claims
1. A short range RF network for providing wireless communication of data in a local environment to a wireless user terminal, comprising:
- a host device connectable to an external network; and
- a plurality of beacon devices disposed at arbitrary locations in the local environment and within a wireless operating range of at least one other like beacon device or said host device, at least some of the plurality of beacon devices comprise a processor and a plurality of wireless transceivers, said wireless transceivers comprising, a first wireless transceiver for providing upstream communication along wireless communication links with beacon devices located closer to the host device; and a second wireless transceiver for providing downstream communication along wireless communication links with beacon devices located further away from the host device.
2. The network of claim 1, wherein one of said first and second transceivers also provides communication with the wireless user terminal.
3. The network of claim 1, wherein said one of said first and second transceivers provides communication with the wireless user terminal when the wireless user terminal is within the wireless operating range of the beacon device associated with said first and second transceivers.
4. The network of claim 1, wherein said first wireless transceiver comprises a plurality of first wireless transceivers.
5. The network of claim 1, wherein said second wireless transceiver comprises a plurality of second wireless transceivers.
6. The network of claim 4, wherein said second wireless transceiver comprises a plurality of second wireless transceivers.
7. The network of claim 1, wherein said plurality of transceivers comprises a third transceiver for causing communication with the wireless user terminal.
8. The network of claim 7, wherein said third transceiver provides communication with the wireless user terminal when the wireless user terminal is within the wireless operating range of the beacon device associated with said third transceiver.
9. The network of claim 1, wherein said beacon devices are powered from one of an electrical outlet, solar energy and a battery.
10. The network of claim 1, wherein said beacon devices comprise visual indicators for conveying an operation mode.
11. The network of claim 1, wherein the host is capable of interfacing with the Internet and wherein the wireless user terminal is a mobile telephone so that the mobile telephone can communicate with the Internet through said network.
12. The network of claim 1, wherein at least one of said beacon devices includes means for broadcasting a message to the wireless user terminal when the wireless user terminal is within the operating range of said at least one of said beacon devices.
13. The network of claim 12, wherein said means for broadcasting a message comprises means for broadcasting an advertisement message.
14. The network of claim 1, wherein said host has a host operating range, a host processor, a host transceiver and a host identification code.
15. A beacon device having a wireless operating range for use in a wireless network having a host device connectable to an external network for providing wireless communication of data in a local environment to a wireless user terminal, said beacon device comprising:
- a processor; and
- a plurality of wireless transceivers capable of communicating with one or more of like beacon devices or the host when said beacon device is disposed within an operating range of said one or more like beacon devices or the host, said wireless transceivers comprising, a first wireless transceiver for providing upstream communication along wireless communication links with said one or more like beacon devices which are located closer to the host device than said beacon device, and a second wireless transceiver for providing downstream communication along wireless communication links with said one or more like beacon devices which are located further away from the host device than said beacon device.
16. The beacon device of claim 15, wherein one of said first and second transceivers also provides communication with the wireless user terminal.
17. The beacon device of claim 15, wherein said one of said first and second transceivers provides communication with the wireless user terminal when the wireless user terminal is within the wireless operating range of said beacon device.
18. The beacon device of claim 15, wherein said first wireless transceiver comprises a plurality of first wireless transceivers.
19. The beacon device of claim 15, wherein said second wireless transceiver comprises a plurality of second wireless transceivers.
20. The beacon device of claim 15, wherein said plurality of transceivers comprises a third transceiver for causing communication with the wireless user terminal.
21. The beacon device of claim 20, wherein said third transceiver provides communication with the wireless user terminal when the wireless user terminal is within the wireless operating range of said beacon device.
22. The beacon device of claim 15, further comprising a visual indicator for conveying an operation mode.
23. The beacon device of claim 15, further comprising means for broadcasting a message to the wireless user terminal when the wireless user terminal is within the operating range of said beacon device.
24. A method of providing wireless communication of data in a local environment over a short range RF network to a wireless user terminal, comprising the steps of:
- connecting a host device connectable to an external network; and
- forming a plurality of wireless communication links between a plurality of beacon devices disposed at arbitrary locations in the local environment and within a wireless operating range of at least one other like beacon device or said host device;
- providing upstream communication along wireless communication links with beacon devices located closer to the host device; and
- providing downstream communication along wireless communication links with beacon devices located further away from the host device.
25. The method of claim 24, wherein said method steps are performed by a processing means.
26. The method of claim 25, wherein said processing means comprises one or more of software and hardware.
27. The method of claim 26, wherein said hardware comprises a chipset contained in each beacon device.
Type: Application
Filed: Nov 5, 2004
Publication Date: May 5, 2005
Applicant:
Inventors: Jarkko Lempio (Nokia), Miska Hiltunen (Witten), Tomi Heinonen (Tampere)
Application Number: 10/983,068