System and method for dynamic formation of a communication network using wireless communication devices

SYSTEM AND METHOD FOR DYNAMIC FORMATION

OF A COMMUNICATION NETWORK USING WIRELESS COMMUNICATION DEVICES

RELATED APPLICATIONS

This application claims priority to U. S. Application Serial Number

12/958,296 filed on December 1 , 2010, which is a continuation-in-part of U. S. Application Serial Number 12/616,958 filed on November 12, 2009, which is a continuation-in-part of U. S. Application Serial Number 12/397,225 filed on March 3, 2009, the entire disclosures and content of which are hereby incorporated by reference in their entirety.

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention is directed generally to wireless

communication devices and, more particularly, to a system and method that allows the dynamic formation of short-range communication networks using direct communication between wireless communication devices.

Description of the Related Art

Wireless communication networks have become commonplace.

A vast array of base stations is provided by a number of different wireless service providers. Wireless communication devices, such as cell phones, personal communication system (PCS) devices, personal digital assistant

(PDA) devices, and web-enabled wireless devices communicate with the various base stations using one or more known communication protocols.

While early cell phone devices were limited to analog operation and voice- only communication, modern wireless devices use digital signal protocols and have sufficient bandwidth to enable the transfer of voice signals, image data, and even video streaming. In addition, web-enabled devices provide network access, such as Internet access.

In all cases, the individual wireless communication devices communicate with one or more base stations. Even when two wireless communication devices are located a few feet from each other, there is no direct communication between the wireless devices. That is, the wireless devices communicate with each other via one or more base stations and other elements of the wireless communication network.

Some wireless service providers have included push-to-talk (PTT) technology that allows group members to communicate with each other using PTT technology. Thus, when one group member presses the PTT button, the communication from that individual is automatically transmitted to the communication devices of other group members. While this gives the appearance of direct communication between the wireless devices, the communications between group members are also relayed via one or more base stations as part of the wireless network.

Therefore, it can be appreciated that there is a need for wireless communication devices that can communicate directly with nearby wireless devices. The present invention provides this, and other advantages, as will be apparent from the following detailed description and accompanying figures.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

Figure 1 is a diagram illustrating a system architecture

configured to implement a communication system in accordance with the present teachings.

Figure 2 is functional block diagram of one of the wireless communication devices of Figure 1 .

Figure 3 illustrates an embodiment of the system of Figure 1 using an access point as part of a network.

Figure 4 illustrates a dynamic network topology using an access point.

Figure 5 is a flow chart illustrating the operation of an application program interface to implement the short-range wireless communication network.

Figure 6 is a sample of message storage within a wireless communication device of the system of Figure 1 .

Figure 7 illustrates the creation of a short-range communication network between two wireless communication devices. Figure 8 illustrates the addition of other wireless communication devices to the short-range communication network of Figure 7.

Figure 9 illustrates a dynamic change to the network configuration of the networks of Figures 7-8.

Figure 10 illustrates the dissemination of information from one short-range communication network to another.

Figure 1 1 illustrates the dissemination of information using an access point.

Figure 12 illustrates the dissemination of information from a retail business.

DETAILED DESCRIPTION OF THE INVENTION

The system described herein extends the normal operational features of conventional wireless communication devices. As described above, the conventional wireless communication device communicates with a wireless communication network base station using a first transceiver (i.e., a network transceiver). The extended capabilities described herein provide a second transceiver device that allows wireless communication devices to communicate directly with each other over a short distance. The wireless communication devices are illustrated as part of a system 100 illustrated in the system architecture in Figure 1 . Portions of the system 100 are conventional wireless network components that will be described briefly herein. The non-network communication capability, which may be referred to herein as a "jump-enabled" device or a "jump" device, will be described in greater detail below.

A conventional wireless communication network 102 includes a base station 104. Those skilled in the art will appreciate that the typical wireless communication network 102 will include a large number of base stations 104. However, for the sake of brevity and clarity in understanding the present invention, Figure 1 illustrates only a single base station 104.

The base station 104 is coupled to a base station controller

(BSC) 106. In turn, the BSC 106 is coupled to a gateway 108. The BSC 106 may also be coupled to a mobile switching center (not shown) or other conventional wireless communication network element. The gateway 108 provides access to a network 1 10. The network 1 10 may be a private core network of the wireless communication network 102 or may be a wide area public network, such as the Internet. In Figure 1 , a user computing device 1 12 is illustrated as coupled to the network 1 10.

For the sake of brevity, a number of conventional network components of the wireless communication network are omitted. The particular network components may vary depending on the implementation of the wireless communication network 102 (e.g., CDMA vs. GSM). However, these elements are known in the art and need not be described in greater detail herein.

Also illustrated in Figure 1 are wireless communication devices 120-128. The wireless communication devices 120-128 are illustrative of many different types of conventional wireless communication devices capable of communicating with the base station 104 or other base stations (not shown) in the wireless communication network 102. Those skilled in the art will appreciate that the wireless communication network 102 may communicate using a variety of different signaling protocols. For example, the system 100 may be successfully implemented using, by way of example, CDMA,

WCDMA, GSM, UMTS, 3G, 4G, LTE, and the like. The system 100 is not limited by any specific communication protocol for the wireless communication network 102.

As illustrated in Figure 1 , the wireless communication device 120 communicates with the base station 104 via a wireless network

communication link 130. Similarly, the wireless communication device 122 communicates with the base station 104 via a wireless network

communication link 132. Each of the wireless communication devices illustrated in Figure 1 (e.g., the wireless communication devices 120-128) contain a conventional transmitter/receiver or transceiver components to permit conventional communication with the wireless communication network 102 via the base station 104 or other base station (not shown). Operational details of conventional network communication are known in the art and need not be described in greater detail herein. In addition to the conventional network transceiver components, the jump-enabled wireless communication devices illustrated in Figure 1 (e.g., the wireless communication devices 120-128) also include a second short- range transceiver to allow direct communication between the devices. This short-range communication is accomplished without reliance on the wireless communication network 102. Indeed, as will be described in greater detail below, the short-range transceivers in the mobile communication devices 120- 128 permit the dynamic formation of a short-range communication network 1 16 that does not rely on the wireless communication network 102 provided by any wireless service provider. Thus, wireless communication devices can rely on the conventional wireless communication network 102 for some communications, but may also be part of the short-range communication network 1 16 formed between the mobile devices themselves. In the example of Figure 1 , the wireless communication device 120 communicates with the base station 104 via the wireless network communication link 130. Similarly, the wireless communication device 122 communicates with the base station 104 via the network wireless communication link 132. However, in addition, the wireless communication devices 120 and 122 may communicate directly with each other via a short-range communication link 134.

As illustrated in Figure 1 , the wireless communication device

124 is not in communication with the wireless communication network 102. However, the wireless communication device 124 can communicate directly with the wireless communication device 122 via a short-range wireless communication link 136. Also illustrated in Figure 1 are the wireless communication devices 126-128. Although neither of these devices is in communication with the wireless communication network 102, the two devices are in direct communication with each other via a short-range wireless communication link 138. Thus, jump-enabled wireless communication devices must be in proximity with each other, but need not be in

communication with the wireless communication network 102 or even in an area of wireless coverage provided by the wireless communication network.

The dynamic formation of one or more short-range networks 1 16 allows communication between the wireless communications devices 120-128 independent of the wireless communication network 102. The short-range communication network 1 16 advantageously allows communication in settings where the wireless communication network 102 is not present or in a situation where the wireless communication network is unavailable. For example, the wireless communication network 102 may be unavailable during a power outage or an emergency situation, such as a fire, civil emergency, or the like. In contrast, the short-range communication network 1 16 does not rely on any infrastructure, such as cell towers, base stations, and the like. As will be described in greater detail below, the short-range communication network 1 16 may be extended as jump-enabled wireless communication devices move throughout a geographic location.

Figure 2 is a functional block diagram illustrative of one of the wireless communication devices illustrated in Figure 1 (e.g., the wireless communication device 120). The wireless communication device 120 includes a central processing unit (CPU) 150. Those skilled in the art will appreciate that the CPU 150 may be implemented as a conventional microprocessor, application specific integrated circuit (ASIC), digital signal processor (DSP), programmable gate array (PGA), or the like. The wireless communication device 120 is not limited by the specific form of the CPU 150.

The wireless communication device 120 in Figure 2 also contains a memory 152. In general, the memory 152 stores instructions and data to control operation of the CPU 150. The memory 152 may include random access memory, ready-only memory, programmable memory, flash memory, and the like. The wireless communication device 120 is not limited by any specific form of hardware used to implement the memory 152. The memory 152 may also be integrally formed in whole or in part with the CPU 150.

The wireless communication device 120 of Figure 2 also includes conventional components, such as a display 154 and a keypad or keyboard 156. These are conventional components that operate in a known manner and need not be described in greater detail. Other conventional components found in wireless communication devices, such as a USB interface, Bluetooth interface, camera/video device, infrared device, and the like, may also be included in the wireless communication device 120. For the sake of clarity, these conventional elements are not illustrated in the functional block diagram of Figure 2.

The wireless communication device 120 of Figure 2 also includes a network transmitter 162 such as may be used by the wireless communication device 120 for the conventional wireless communication network with the base station 104 (see Figure 1 ). Figure 2 also illustrates a network receiver 164 that operates in conjunction with the network transmitter 162 to communicate with the base station 104. In a typical embodiment, the network transmitter 162 and network receiver 164 share circuitry and are implemented as a network transceiver 166. The network transceiver 166 is connected to an antenna 168. The network transceiver 166 is illustrated as a generic transceiver. As previously noted, the mobile communication devices (e.g., the mobile communication devices 120-128) may be implemented in accordance with any known wireless communication protocol including, but not limited to, CDMA, WCDMA, GSM, UMTS, 3G, 4G, WiMAX, LTE, or the like. Operation of the network transceiver 166 and the antenna 168 for communication with the wireless communication network 102 is well-known in the art and need not be described in greater detail herein.

The wireless communication device 120 of Figure 2 also includes a short-range transmitter 172 that is used by the wireless

communication device 120 for direct communication with other jump-enabled wireless communication devices (e.g., the wireless communication device 122 of Figure 1 ). Figure 2 also illustrates a short-range receiver 174 that operates in conjunction with the short-range transmitter 172 to communicate directly with other jump-enabled wireless communication devices (e.g., the wireless communication device 122 of Figure 1 ). In a typical embodiment, the short- range transmitter 172 and short-range receiver 174 are implemented as a short-range transceiver 176. The short-range transceiver 176 is connected to an antenna 178. In an exemplary embodiment, the antennas 168 and 178 may have common components are implemented as a single antenna.

Figure 2 also illustrates a controller 182 and a data storage area 184. As will be described in detail below, the controller 182 controls the exchange of data between wireless communication devices that become part of the short-range communication network 1 16. The data storage 184 contains messaging data that will be exchanged between wireless

communication devices in the short-range communication network 1 16. The data storage area 184 may be implemented as any convenient data structure. As will be described in greater detail below, the data storage area contains data (e.g., messages) that will be exchanged between wireless

communication devices. The data may be stored as a simple list, part of a database, or any other convenient data storage structure. The data storage area 184 also stores a list of other nearby wireless communication devices that form part of the short-range wireless communication network 1 16.

The various components illustrated in Figure 2 are coupled together by a bus system 186. The bus system may include an address bus, data bus, power bus, control bus, and the like. For the sake of convenience, the various busses in Figure 2 are illustrated as the bus system 186.

In one embodiment, when the jump-enabled wireless communication device 120 comes within range of any other jump-enabled wireless communication device (e.g., the wireless communication device 122 of Figure 1 ), it establishes a short-range wireless communication link (e.g., the short-range wireless communication link 134). In an alternative embodiment, the jump-enabled wireless communication device will establish a short-range communication network 1 16 with any nearby wireless communication device whether it is jump-enabled or not.

In an exemplary embodiment, the short-range transceiver 176 may be designed for operation in accordance with IEEE standard 802.1 1 , sometimes referred to as WiFi. Many modern wireless communication devices are equipped with WiFi and may be readily upgraded to support the functionality described herein. Because the wireless communication devices 120-128 all include WiFi capability, short-range communication networks 1 16 may be formed even though the wireless communication devices may be designed to operate with incompatible wireless

communication networks 102. For example, the wireless communication device 122 may be configured for operation with a GSM implementation of the wireless communication network 102. The wireless communication device 124 may be configured for operation with a CDMA implementation of a wireless communication network 102. Even though the wireless

communication devices 122-124 are incompatible with respect to the respective wireless communication networks 102, the wireless communication devices 122-124 may still communicate directly with each other via the short- range communication network 1 16. Thus, the wireless communication devices 120-128 may operate compatibly to form the short-range

communication networks 1 16 even though the network transceivers 166 (see Figure 2) may operate with different incompatible wireless communication networks 102.

In one embodiment, a jump-enabled wireless communication device operates in an "ad hoc" mode defined by IEEE 802.1 1 , which allows devices to operate in an independent basic service set (IBSS) network configuration. In this embodiment, one or more jump-enabled wireless communication devices (e.g., the wireless communication devices 120-128) communicate directly with each other in a peer-to-peer manner using unlicensed frequency bands. Manufacturer specifications for Wi-Fi devices may indicate that the wireless communication device Wi-Fi range is

approximately 300 feet. In practice, the actual range may be considerably less, such as a 100 foot range. In addition, those skilled in the art will recognize that the actual transmission range may vary from one wireless communication device to another and may vary dramatically depending on obstructions. For example, natural obstructions (e.g., terrain or vegetation) or man-made obstructions (e.g., buildings or other structures) will have an impact on the range of the short-range transceiver 176. Furthermore, those skilled in the art will appreciate that the operational range of the short-range transceiver 176 will dynamically vary during operation. For example, the user may begin operation in one room of a building but move to a different room during operation of the short-range transceiver 176. Thus, the range and area of coverage of a wireless communication device can be highly variable. Although the operational range of jump-enabled devices can be more or less than 300 feet, jump-enabled wireless communication devices are generally designed for short-range communication capability.

In accordance with IEEE 802.1 1 , two WiFi devices must be associated with each other to exchange data. This technique is well known in the use of personal computers where a WiFi connection may be established between a PC and a wireless router or wireless access point (WAP) at home, at the office, or some public location (e.g., an airport, coffee shop, and the like) that provides a wireless "hot spot." In this conventional operation, the user of the PC must enable a process to seek out any nearby WiFi wireless router. When one or more wireless routers are detected, the user manually selects a wireless router with which to communicate. In a setting such as an airport, the WAP is typically unencrypted and broadcasts an identification in the form of a service set identifier (SSID). For example, the SSID in the Los Angeles International Airport may, for example, be broadcast as "LAX

Wireless Service."

In a home wireless network, the wireless router will also have an SSID (e.g., The Smith Family). In addition, a home wireless router may include known forms of encryption such as WEP, WPA-2, or the like. If encryption is selected, the wireless router will have an encryption key. For successful communication with an encrypted router, the PC user must select that router when viewing the list of available WiFi connections and provide the appropriate encryption key to match the encryption key for the selected wireless router.

In the system 100, each wireless communication device (e.g., the wireless communication devices 120-128) transmits a beacon signal with the same SSID, such as the SSID "JUMMMP" to identify the device as a jump-enabled wireless communication device. In addition, the beacon frame includes several other data fields such as a media access layer (MAC) address for source and destination. In the beacon frame, the destination

MAC address is set to all ones to force other wireless communication devices to receive and process the beacon frame. The beacon frame used in the system 100 may also include conventional elements, such as a time stamp used for synchronization with other wireless devices, information on

supported data rates, parameter sets that indicate, for example, transceiver operational parameters such as the IEEE 802.1 1 channel number and signaling method such as operation at the physical layer (PHY) and operation in a direct frequency spectrum (DSSS) or a frequency hopping spread spectrum (FHSS) operational modes. These conventional WiFi parameters are known in the art and need not be described in greater detail herein.

In addition, since there is no access point, all jump-enabled wireless communication devices take on the responsibilities of the MAC layer that controls, manages, and maintains the communication between the jump- enabled wireless communication devices by coordinating access to the shared radio channel and the protocols that operate over the wireless medium. In an exemplary embodiment, the MAC is implemented in

accordance with IEEE 802.2. At the PHY layer, the transceiver may operate in a DSSS or a FHSS operational mode. Alternatively, the PHY layer may be implemented using infrared transceivers. The IEEE 802.1 1 standard defines a common operation whether devices are using the ad hoc or the

infrastructure mode. The use of the ad hoc mode only affects protocols, so there is no impact on the PHY layer. Thus, the wireless communication device 120 may operate under IEEE 802.1 1 a at 5 gigahertz (GHz) under

IEEE 802.1 1 b/g at 2.4 GHz, or IEEE 802.1 1 n, which operates at both 2.4 GHz and 5 GHz. Those skilled in the art will appreciate that the wireless

communication device of the system 100 may be readily adapted for operation with future versions of IEEE 802.1 1 .

In an alternative embodiment, the wireless communication devices 120-128 may be configured in accordance with IEEE WiFi Direct standards. WiFi Direct allows any wireless communication device in the short-range communication network 1 16 to function as the group owner. WiFi Direct simplifies the process of establishing a communication link. For example, the WiFi protected set up allows a communication link to be established by entering a PIN or other identification or, simply pressing a button. As will be described herein, the jump-enabled wireless

communication devices actively seek to establish links with other jump- enabled devices to automatically establish a short-range communication network 1 16.

In yet another alternative embodiment, illustrated in Figure 3, the jump-enabled wireless communication devices (e.g., the wireless

communication devices 120-122) may communicate with an access point 140, such as a WiFi base station, wireless router, or the like. Figure 3 illustrates a wireless communication link 142 established between the access point 140 and the wireless communication device 120. Similarly, the wireless

communication device 122 establishes a wireless communication link 144 with the access point 140. Thus, a short-range communication network 1 16a is formed in conjunction with the access point 140. To assist in a better understanding of the present disclosure, short-range communication networks will be generally referred to by the reference 1 16. Specific examples of short- range communication networks will be referred to by the reference 1 16 and an alphabetic identifier (e.g., the short-range communication network 1 16a in Figure 3).

Depending on the physical proximity of the wireless communication devices 120-124, there may be one or more short-range communication networks 1 16 formed. In the example of Figure 3, the wireless communication devices 120-122 are both within range of the access point 140. Therefore, the first short-range communication network 1 16a can be formed with the wireless communication devices 120-122 and the access point 140.

The wireless communication device 124 is within range of the wireless communication device 122, but is not within range of the access point 140. In one embodiment, the wireless communication device 124 may be become part of the short-range communication network 1 16a via the wireless communication device 122. In this embodiment, the wireless communication device 122 functions as a "repeater" or relay to relay information between the wireless communication device 124 and other parts of the short-range communication network 1 16a. In another embodiment, a second short-range communication network 1 16b is formed with the wireless communication devices 122-124. In this exemplary embodiment, the wireless communication device 122 is part of both short-range communication networks 1 16a-1 16b. The wireless communication device 122 may simultaneously be a member of both short-range communication networks 1 16a-1 16b or may be logically connected to both short-range communication networks 1 16a-1 16b by alternately switching between the short-range communication networks 1 16a-1 16b.

The access point 140 is coupled to the network 1 10 in a conventional manner. This can include a wired or wireless connection directly to the network 1 10 or via an intermediate network gateway, such as those provided by an Internet Service Provider (ISP). Figure 3 also illustrates a JUMMMP Network website 200, which may support an individual web page 202 for each member (e.g., an individual person, business, organization, etc.) of the JUMMMP Network. Figure 3 also illustrates a generic conventional social network website 206, which may support an individual web page 208 for each member of the social network. The JUMMMP Network website 200 and social network website 206 are each coupled to the network 1 10.

As discussed in detail in co-pending U.S. application serial number 12/616,958, filed on November 12, 2009 and assigned to the assignee of the present application, the user of a jump-enabled wireless communication device (e.g., the wireless device 120) may use the web- browsing capability of the wireless communication device to access the individual jump web page 202 for the individual with whom contact has just been made to learn more about that individual. Alternatively, the user of a jump-enabled wireless communication device (e.g., the wireless device 120) may use the web-browsing capability of the wireless communication device to access the issuer's own individual jump web page 202 to store information for the individual with whom contact has just been made. A contact list 204, which is typically a portion of the individual jump web page 202 is configured to store contact information. Similarly, the individual jump web page 208 of the social network 206 can include a contact list 210 to store contact information.

Storage of contact information requires access to the network 1 10. In the embodiment of Figure 1 , access to the network 1 10 may be provided via the base station 104 in a conventional manner. The wireless communication device 122 may access the network 1 10 by communicating directly with the base station 104. In the embodiment of Figure 3, access to the network 1 10 may be provided via the access point 140, as described above. For example, the wireless communication device 122 may access the network 1 10 by communicating directly with the access point 140 via the short-range communication link 144

In an alternative embodiment, access to the network 1 10 may be provided via another jump-enabled wireless communication device. For example, in Figure 1 , the wireless communication device 122 can

communicate with the base station 104 via the wireless communication link 132 while the wireless communication device 124 cannot communicate directly with the base station. However, the wireless communication device 124 is in proximity with the wireless communication device 122 and can communicate with the wireless communication device 122 via the wireless communication link 136 as part of the short-range communication network 1 16. In this embodiment, the wireless communication device 124 can use the wireless communication device 122 as a repeater or relay to allow the wireless communication device 122 to access the network 1 10 via the wireless communication device 122 and the base station 104.

Similarly, in the embodiment of Figure 3, the wireless communication devices 120-122 can communicate directly with the access point 140 via the wireless communication links 142-144, respectively. The wireless communication devices 120-122 can also communicate with each other via the access point 140 thus forming the short-range communication network 1 16a. As seen in Figure 3, the wireless communication device 124 cannot communicate directly with the access point 140. However, the wireless communication device 124 is in proximity with the wireless

communication device 122 and can communicate with the network 1 10 via the wireless communication device 122 and the access point 140.

As previously noted, the system 100 provides for the dynamic formation and rapid change in the topography of the short-range

communication networks 1 16. For example, Figure 1 illustrates a first short- range communication network 1 16 formed with the wireless communication devices 120-124 and a second short-range communication network 1 16 formed between the wireless communication devices 126-128. Figure 4 illustrates the dynamic nature of the wireless communication networks 1 16. For example, if the wireless communication device 128 is initially within range of the wireless communication device 126, but out of range of the access point 140, the wireless communication devices 126-128 may form a short- range communication network 1 16c using the short-range communication link 138. If the wireless communication device 126 comes within range of the access point 140, a wireless communication link 212 is formed. In that event, the wireless communication device 126 may become part of a short-range communication network 1 16d formed between the access point 140 and the wireless communication devices 120 and 126. At this particular moment in time the mobile communication device 126 may be part of both the short- range communication network 1 16c and the short-range communication network 1 16d. As discussed above, the wireless communication device 126 may actually be part of both the short-range communication networks 1 16c- 1 16d or may logically be connected to both the short-range wireless communication networks by switching back and forth between the short-range communication networks 1 16c-1 16d. The logical switching of the network is transparent to the user.

Alternatively, the wireless communication device 128 may become part of the short-range communication network 1 16d using the wireless communication device 126 as a relay to the access point 140. If, at a later time, the wireless communication device 128 comes within range of the access point 140, a wireless communication link 214 is formed therebetween. At that point in time, the short-range communication network 1 16c effectively ceases to exist since the wireless communication devices 126-128 are now part of the short-range communication network 1 16d.

The wireless communication device 120 may be part of the short-range communication network 1 16d by virtue of the short-range communication link 142 coupling the wireless communication device 120 to the access point 140. If the wireless communication device 120 comes within range of the wireless communication devices 122-124, wireless communication links 216-218 will be formed to couple the wireless

communication devices 120-124 and thereby dynamically form a short-range communication network 1 16e. At this point in time, the wireless

communication device 120 may simultaneously be part of the short-range communication network 1 16d and the short-range communication network 1 16e. Alternatively, the wireless communication devices 122-124 may become part of the short-range communication network 1 16d via the wireless communication device 120.

If the wireless communication device 120 subsequently moves out of range of the access point 140, the wireless communication link 142 is broken. Therefore, there will no longer be overlap between the short-range communication networks 1 16d-1 16e. The wireless communication

device 120 would remain part of the short-range communication network 1 16e so long as it remains within range of the wireless communication device 122, the wireless communication device 124, or both. Thus, those skilled in the art will appreciate that short-range communication networks are dynamically formed, modified, and dissolved as the wireless communication devices move in and out of range with each other and central points, such as the access point 140. Those skilled in the art will also appreciate that the short-range communication networks 1 16 may be formed, modified, and dissolved without the presence of the access point 140.

Figure 4 illustrates the wireless communication device 120 as a key component in the short-range communication network 1 16e because it connects the wireless communication devices 122-124 to the access point

140. If the wireless communication device 120 suddenly moved out of range of the access point and/or the wireless communication devices 122-124 that connection may be broken. Similarly, if the user of the wireless

communication device 120 suddenly turned off the device, the link between the short-range communication network 1 16e and the access point 140 would disappear. The wireless communication devices 122-124 still communicate with each other via the wireless communication link 136 and will still search for other wireless communication devices with which to connect. In addition, either of the wireless communication devices 122-124 will attempt to find the access point 140 or a hot spot from which either of the wireless

communication devices may access the network 1 10.

Figure 4 illustrates a sparse network with only five wireless communication devices. However, those skilled in the art can appreciate that there may be a very large number of wireless communication devices in proximity with each other. For example, if Figure 4 is illustrative of a large shopping mall, there may be hundreds of wireless communication devices within the mall. Thus, the short-range communication networks 1 16 may be large and extensive. There may be a large number of wireless

communication devices that are simultaneously present in two or more short- range communication networks 1 16. In addition, many wireless

communication devices would provide overlapping coverage with multiple short-range communication networks 1 16. In this scenario, the entire mall and surrounding parking area could be effectively covered by a mesh network comprising dozens or hundreds of short-range communication networks 1 16. Thus, in the situation illustrated in Figure 4 where the wireless communication device 120 is turned off or moved out of range of other wireless

communication devices is less likely to cause the total isolation of the short- range communication network 1 16e. If the wireless communication device 120 were suddenly removed, either by powering down or by the departure from the area, many other wireless communication devices (not shown) in the same proximity would be able to replace the connectivity between the short- range communication network 1 16e and the access point 140.

Figure 5 illustrates a flow chart and functionality of an application program interface (API) utilized by jump-enabled wireless communication devices. The JUMMMP API may be programmed into the wireless communication device at the time of manufacture or downloaded in a conventional manner. Those skilled in the art will understand the

programming steps to download and install the JUMMMP API. The controller 182 (see Figure 2) in the wireless communication device (i.e., the wireless communication device 120) executed the JUMMMP API. As previously noted, the controller 182 may be implemented as a set of instructions stored in the memory 152 and executed by the CPU 150.

At a start 300, shown in Figure 5, the JUMMMP API is already present within the various wireless communication devices. Figure 5 illustrates a number of processes that are performed by the JUMMMP API, including a Broadcast Beacon Process, a Scan Process, and a Data

Exchange Process. The separate processes may be executed repeatedly by the wireless communication device.

At step 302, the wireless communication device enables an instance of a WiFi Manager that controls the WiFi communication hardware (i.e., the short-range transceiver 176 of Figure 2) and sets the JUMMMP API to have control of the short-range transceiver. The three processes listed above all require the operation of step 302 such that the JUMMMP API gains control of the short-range transceiver 176. Any wireless communication device that includes a WiFi transceiver will include some control functionality, labeled herein as the WiFi Manager to control the WiFi communication transceivers using one or more software drivers that control the actual hardware. With the installation of the JUMMMP API, the wireless

communication device 120 may hook into the existing WiFi Manager and utilize some of the WiFi Manager functionality. Certain functions, such as the Scan Process, may be controlled to a greater degree by the JUMMMP API.

The Broadcast Beacon Process is initiated to inform wireless devices of the presence of a jump-enabled wireless communication device. In step 304, the beacon signal of the jump-enabled wireless communication device is altered such that the SSID will contain a key word identifying the wireless communication device as part of a jump network (e.g., SSID = JUMMMPNet). Those skilled in the art will appreciate that IEEE802.1 1 provides for user-specified data to be broadcast as part of the beacon signal. In a current implementation of IEEE802.1 1 , a total of 32 characters are available for user-defined purposes. In step 304, the beacon signal is also altered to include a local user name and may, optionally, include a unique alphanumeric identifier and additional flags that may be used for applications utilizing the JUMMMP API. Application programs can use the JUMMMP API to insert application-specific data into the beacon signal. For example, a social networking application program can use the JUMMMP API to insert information such as age, sex, and interests of the user that will be broadcast in the beacon signal and used by other wireless communication devices running the social networking application program. In another example, a sports application program can insert sports scores or updates into the beacon signal. If there are too many scores to fit into the allocated space in a single beacon signal, the scores can be changed with each beacon signal.

In step 306, the wireless communication device 120 periodically transmits the beacon signal. The beacon signal may be set to broadcast continuously or at a predetermined interval, such as, by way of example, every ten seconds. Those skilled in the art will appreciate that the interval used to broadcast the beacon signal may be altered based on system metrics. The beacon broadcast process ends at step 306 with the short-range transceiver 176 continuing to broadcast the beacon signal.

While the jump-enabled wireless communication device 120 is broadcasting its own beacon signal, it also listens for the beacon signals broadcast from other jump-enabled wireless communication devices (e.g., the wireless communication device 122). The Scan Process illustrated in

Figure 5 outlines the actions of the JUMMMP API to detect and communicate with other jump-enabled devices. In the Scan Process, illustrated in Figure 5, a timer is started in step 310. As discussed above, step 302 has already been performed to permit the JUMMMP API to gain control of the WiFi Manager. The timer process in step 310 determines how frequently a jump- enabled wireless communication device 120 will scan for other jump-enabled wireless communication devices.

In step 312, the JUMMMP API controls the WiFi Manager to activate a device driver in the wireless communication device to scan for available WiFi connections. In step 314, the jump-enabled wireless

communication device creates a list of results returned from the scan in step 312. The list of results may be stored in the data storage area 184 (see Figure 2). It should be noted that this list will include non-jump-enabled wireless communication devices as well as jump-enabled wireless

communication devices.

In decision 316, the controller 182 (see Figure 2) in the jump- enabled wireless communication device 120 determines whether any new jump-enabled wireless communication devices are present on the list. Those skilled in the art will appreciate that the wireless communication device performing the scan process may be designated as the group owner while any detected wireless communication devices (whether or not they are jump- enabled devices) may be designated as client devices. As previously discussed, in many WiFi modes of operation, one wireless device must be designated as the group owner while others of the wireless communication devices are designated as client devices. Those skilled in the art will appreciate that the Scan Process (see Figure 5) is not limited only to the group owner. In an exemplary embodiment, all jump-enabled wireless communication devices perform a Scan Process in an effort to discover and connect with other wireless communication devices. Furthermore, while there may be a preference to connect with other jump-enabled wireless

communication devices, the Scan Process will discover any nearby wireless communication device, whether or not it is jump-enabled, and may connect to any nearby wireless communication device, whether or not it is jump-enabled.

If there are new jump-enabled wireless communication devices in the list, the result of decision 316 is YES and, in step 318, the wireless communication device 120 connects to the new jump client device.

If there are no new jump devices detected as a result of the scan in step 312, the result of decision 316 is NO and, in decision 320, the wireless communication device 120 determines whether it is already connected to another jump-enabled client device. If the wireless

communication device is not already connected to a jump-enabled client device, the result of decision is NO and, in step 322, the jump-enabled wireless communication device will attempt to connect to any jump client device in the list (created in step 314) or else attempt to establish a

connection with the first open WiFi connection from the list created in step 314. Alternatively, the jump-enabled wireless communication device may attempt to connect to the open WiFi connection having the strongest signal in step 322.

If the wireless communication device is already connected to a jump client, the result of decision 320 is YES. If the wireless communication device has connected to a new jump client in step 318, or connected to a WiFi device in step 322, or is already connected to a jump client device from decision 320, the wireless communication device 120 broadcasts stored data to any client device(s) to which it is able to connect in step 324. As will be described in greater detail below, the system 100 is capable of distributing messages throughout a short-range communication network 1 16 and may even distribute messages from one short-range communication network to another.

Figure 5 also illustrates a message exchange process to facilitate the exchange of data between wireless communication devices in a particular short-range communication network 1 16 (e.g., the short-range wireless communication device 1 16e of Figure 4). The data exchange process in the JUMMMP API is also illustrated in Figure 5. As with other processes illustrated in Figure 5, the JUMMMP API begins with step 302 in which the WiFi manager is instantiated and the controller 182 (see Figure 2) has control of the short-range transceiver 176. In step 330, the controller 182 configures the short-range receiver 174 to detect transmitted beacon signals from other jump-enabled wireless communication devices. The wireless communication device 120 has stored messages previously received from other clients and stored the received messages in the data storage area 184 (see Figure 2). In step 332, the wireless communication device listens for and gets data from all other jump-enabled clients. In step 332, the controller 182 also merges the messages received from other clients in step 332 and stored in the data storage area 184 as well as newly received messages in order to merge the messages and eliminate duplicate messages. In this manner, the wireless communication device manages the message data within the data storage area 184. Further details of message management will be provided below. In step 334 the controller 182 stores the merged message data in the data storage area 184 and in step 324, the merged message data is broadcast to other clients' jump-enabled wireless communication devices that form part of the short-range communication network 1 16. Thus, when two jump-enabled wireless communication devices detect each other and form a short-range communication network 1 16, the wireless communication devices exchange message data with each other such that the message data is synchronized between the two devices. If a third wireless communication device joins the short-range communication network 1 16, its message data is exchanged between the two wireless communication devices that have already formed the network. Thus, the wireless communication devices within a particular short-range communication network 1 16 are effectively

synchronized with the respective message data.

As will be described in greater detail below, the message data exchanged between wireless communication devices in the short-range communication network 1 16 include a main header that transmits a list of messages that may be intended for users of the wireless communication devices within the particular short-range communication network as well as messages for other jump-enabled wireless communication devices that are not part of the particular short-range communication network. Messages to be exchanged between wireless communication devices in a short-range communication network 1 16 may be categorized based on the nature of the message. In an exemplary embodiment, messages may be categorized as Public Messages, Group Messages, Direct Messages, and Status Messages. Public Messages may be transmitted to anyone within range of the wireless communication device (e.g., the wireless communication device 120). This may include emergency messages, messages broadcast from a retailer, and the like. Group Messages are intended for a specific group or organization, such as a scout troop or employees of a particular company. Direct

Messages are intended for a specific individual. In addition, the wireless communication device 120 may transmit Status Messages, which can include, by way of example, a list of other wireless devices currently in the particular short-range communication network 1 16, a list of recent wireless communication devices in the particular short-range communication network, a list of other short-range communication networks in which the wireless communication device 120 was recently a member, or the like. The data exchange process illustrated in Figure 5 can include one or more of these message categories. Other message categories may be created as necessary.

In one embodiment, all public messages and group messages may be contained in one file and all direct messages contained in a separate file. The messages may be formatted as standard text files or xml files that have a main header and individual message headers, as illustrated in

Figure 6.

The main header for all messages may contain at least the following:

1 . Date/time of last modification;

2. Message count;

3. Last synch date/time and user name of the wireless

communication device with which the last synchronization was performed; and

4. Our local user name.

This message will help maintain synchronization between the wireless communication devices without excess exchange of data or unnecessary processing by any of the wireless communication devices. For example, the last synch date/time may indicate that a recent synchronization has occurred and is unnecessary at the present time.

Alternatively, synchronization data may be provided in the form of a data flag in a status byte of the beacon signal. As previously noted, the beacon signal permits the transmission of a limited amount of user-defined data. A status data byte may contain one or more data flags. One data flag may be a New_Data flag to indicate that a particular wireless communication device (e.g., the wireless communication device 120) has new data. The wireless communication device 120 may synchronize its message data with other wireless communication devices within the particular short-range communication network 1 16. Following the synchronization, the New_Data flag may be reset.

Those skilled in the art will appreciate that other conventional data synchronization techniques may be used. For example, the wireless communication devices within a particular short-range communication device 1 16 may simply synchronize with each other on a periodic basis. For example, the wireless communication devices within a particular short-range communication network 1 16 may synchronize every ten minutes or some other selected time period. The re-synchronization period may be

dynamically altered based on factors such as the number of wireless communication devices within a particular short-range communication network 1 16. Furthermore, the addition of a new wireless communication device into the particular short-range network 1 16 may force a re- synchronization process even if the time period has not yet expired for the other ones of the wireless communication devices.

Individual message headers will contain at least the following:

1 . Date/time stamp of message creation;

2. User name that created the message (i.e., originator);

3. Destination user name/group name/global for direct messages/group messages/public messages; and

4. Urgency level.

Because of the mobile nature of the wireless communication devices, any particular wireless communication device can be present in one or more short-range communication networks 1 16 and may readily leave one short-range wireless communication device and readily join another short- range wireless communication device.

Figures 7-12 illustrate the distribution of message data throughout multiple short-range communication networks 1 16. For the sake of simplicity, the wireless communication devices are illustrated in these figures merely as dots with associated reference numbers. Furthermore, the area of coverage of wireless communication devices may be illustrated as a circle in Figures 7-12. Those skilled in the art will appreciate that the circle is a two-dimensional representation of the area of coverage of a particular wireless communication device. Those skilled in the art will appreciate that the wireless communication device transmits in three-dimensions and that the area of coverage may be altered by natural or manmade barriers (e.g., terrain, plants, trees, walls, buildings, and the like). The area of coverage may even alter as the wireless communication device moves from one room to another within a building.

Figure 7 illustrates the most rudimentary form of the short-range communication network 1 16. In Figure 7, the wireless communication device 126 is illustrated at the center of a communication range 350. Wireless communication devices that come within the communication range 350 may form a short-range communication network 1 16f. As the wireless

communication device 128 moves within range of the wireless communication device 126, the wireless communication link 138 is established. As described above, the two wireless communication devices 126-128 will exchange message data. In one embodiment, each of the wireless communication devices 126-128 could exchange its complete list of message data stored within the data storage area 184. In some embodiments, only one of the mobile communication devices 126-128 transmits its message data to the other wireless communication device. The receiving wireless communication device compares the received message data with the message data stored in the data storage area 184 to eliminate duplicate messages. Duplicate messages may be identified by the individual message header that identifies the originator as well as the date/time of the message origination. In practice, either of the two wireless communication devices 126-128 could send its stored message data. To avoid inconsistencies, in one embodiment, the group owner (the wireless communication device 126 in the example of Figure 7) is designated to receive the message data and perform the merge operation. Thus, in this example the wireless communication device 128 would transmit all of the stored message data in the data storage area 184. As discussed above with respect to Figure 5, this may also include new messages created by the wireless communication device 128. Upon receipt, the wireless communication device 126 compares the received messages with the stored messages in the data storage area 184 to eliminate duplicates. Time stamp data, discussed above with respect to Figure 6, can be used to identify duplicate messages. Following the message merge process, the data storage area 184 in the wireless communication device 126 will contain a merged data message file. The merged data message file is transmitted to the wireless communication device 128 for storage in its data storage area 184. Thus, the data storage area 184 in each of the wireless communication devices 126-128 is now synchronized. This illustrates a Data Exchange Process (see Figure 5) to synchronize the data storage areas 184 between two wireless communication devices in a particular short-range

communication network 1 16. If the short-range communication network 1 16 includes more wireless communication devices, they will undergo the Data Exchange Process such that all wireless communication devices in a particular short-range communication network are synchronized (i.e., they have the same data in their respective data storage areas 184).

Figure 8 illustrates the wireless communication device 122 at the center of a communication range 352. As illustrated in Figure 8, the wireless communication device 122 comes within range of the wireless communication device 128 (by movement of one or both wireless

communication devices). In a process described above, a wireless

communication link 354 is established between the wireless communication devices 122 and 128. In one embodiment, the wireless communication devices 122 and 128 form a short range communication network 1 16g. In this embodiment, the wireless communication device 128 is in both the short- range communication network 1 16f and 1 16g. The wireless communication devices 122 and 128 exchange message data in the manner described above. Because the wireless communication device 128 now has updated message data, the Data Exchange Process (see Figure 5) between the wireless communication devices 126 and 128 will also occur. Thus, at the end of this synchronization process, the wireless communication devices 122, 126, and 128 will all have the same message data in the data storage area 184 (see Figure 2). It should be noted that the data storage area 184 need not be identical between the wireless communication devices 122, 126, and 128 because the messages may appear in a different sequence. However, following synchronization, the data storage area 184 in each of the

synchronized wireless communication devices will contain the same messages.

In an alternative embodiment, the wireless communication device 128 acts as a repeater to relay communications such that the wireless communication device 122 is effectively part of the short-range

communication network 1 16f. It should be noted that Direct Messages (i.e., messages intended for a specific recipient) may be passed along a number of different wireless communication devices in a number of different short-range communication networks 1 16. Security measures, such as encryption, prevent viewing of messages by any wireless communication device (or any access port of router) except the intended recipient.

Figure 8 also illustrates the wireless communication device 120 coming within range of the wireless communication device 126. As described above, a communication link 356 is established between the wireless communication devices 120 and 126. In addition, if the wireless

communication device 128 is within range of the wireless communication device 120, a separate short-range wireless communication link 360 may be established between the wireless communication devices 120 and 128. As described above, when the wireless communication device 120 becomes part of the short-range communication network 1 16f, data in the data storage area 184 (see Figure 2) is exchanged between the wireless communication device 120 and other wireless communication devices already in the short-range communication network 1 16f. In the embodiment illustrated in Figure 8, data may be exchanged between the wireless communication devices 120 and 126 via the wireless communication link 356. Because the wireless

communication device 126 now has updated data in the data storage area 184, a synchronization will occur between the wireless communication devices 126 and 128. Again, following the synchronization process, the data storage area 184 in the wireless communication devices 120, 126, and 128 will contain the same messages.

To consider the dynamic nature of the short-range communication networks 1 16, consider Figure 9 where the wireless communication device 120 now moves out of range of the wireless

communication 126, thus eliminating the wireless communication link 356. However, in the embodiment illustrated in Figure 9, the wireless

communication device 128 is illustrated at the center of a communication range 358. As the wireless communication device 120 moves out of the communication range 350, it moves into communication range 358 of the wireless communication device 128. As described above, the wireless communication link 360 is established between the wireless communication devices 120 and 128. Figure 9 illustrates that the short-range communication network 1 16f now includes only the wireless communication devices 126-128 while the short-range communication network 1 16g includes only the wireless communication devices 122 and 128. In one embodiment, the wireless communication device 120 may become part of the short-range

communication network 1 16f, or the short-range communication network 1 16g, or both by using the wireless communication device 128 as a relay. In an alternative embodiment, the wireless communication device 128 may become the group owner of a new short-range communication network 1 16h that includes the wireless communication devices 120, 122, 126 and 128. In this embodiment, the new short-range communication network 1 16h eliminates the need for the short-range communication networks 1 16f and 1 16g. Thus, the short-range communication networks 1 16f and 1 16g would be eliminated.

Figure 10 illustrates a scenario in which wireless communication devices travel from one short-range communication network 1 16 to another and thereby distribute data stored in the data storage area 184 of the traveling wireless communication device. In Figure 10, the wireless communication device 126 may generate a message for a wireless communication device 364 having an area of coverage 366 that does not overlap with the

communication range 350 of the wireless communication device 126. In the example illustrated in Figure 10, a message is contained within the data storage area 184 of the wireless communication device 126. The message may have been generated by the wireless communication device 126 or may have been received by the wireless communication device 126. The wireless communication device 126 uses the wireless communication link to exchange data with the wireless communication device 120. In the example illustrated in Figure 10, the wireless communication device moves out of the

communication range 350 and into the communication range 358 of the wireless communication device 128. In the present example, there may be a period where the wireless communication device 120 is not within range of any short-range communication network 1 16. However, as the wireless communication device 120 moves within the coverage range 358, it establishes the wireless communication link 360 with the wireless

communication device 128 and exchanges data therewith in the manner described above. In turn, the wireless communication device 128 exchanges data, including the data carried by the wireless communication device 120, with the wireless communication device 122 using the wireless

communication link 354.

As Figure 10 illustrates, the wireless communication device 122 is within a communication range 368 of a wireless communication device 370. The wireless communication device 122 exchanges data, including the data originally carried by the wireless communication device 120, to the wireless communication device 370 using a wireless communication link 372. In the example of Figure 10, the wireless communication device 370 moves out of range of the wireless communication device 122 and out of the

communication range 358. At some later point in time, the wireless

communication device 370 moves within the communication range 366 of the wireless communication device 364. At this point, the wireless

communication device 370 establishes a communication link 372 with the wireless communication device 364. At that point, the wireless

communication device 370 exchanges data in the data storage area 184 (see Figure 2) with the wireless communication device 364. As previously discussed, the wireless communication device 370 is carrying the data originated by the wireless communication device 126. This is true even though the wireless communication device 370 may have been out of range of any wireless communication devices for some period of time. Following the data exchange between the wireless communication devices 370 and 364, the wireless communication device 364 now includes the data originally stored in the data storage area 184 of the wireless communication device 126. Thus, it can be appreciated that the dynamic and fluid nature of the short-range communication networks 1 16 allows data to be exchanged between wireless communication devices that are in range of each other and for data to be carried from one short-range communication network 1 16 to another.

The example illustrated in Figure 10 shows only a single wireless communication device 120 moving from the communication range 350 to the wireless communication device 358, the single wireless

communication device 370 moving from the area of coverage 368 to the area of coverage 366. However, those skilled in the art will appreciate that this scenario can be repeated by dozens of wireless communication devices. Using the example of a shopping mall, data may be originally exchanged between dozens of wireless communication devices within a single short- range communication network 1 16. As each of those dozens of wireless communication devices fan out, they temporarily become members of other wireless communication devices and disseminate the data stored in their respective data storage areas 184 to potentially dozens of other wireless communication devices within the new short-range communication network.

This form of "viral" distribution can effectively provide a mesh network in areas where there is a large accumulation of wireless communication devices.

Thus, the data from the wireless communication device 126 in the example of Figure 10 may, in fact, be delivered to the wireless communication device 364 through a multitude of pathways.

Figure 10 illustrates the movement of mobile communication devices from one short-range communication network 1 16 to another. Those skilled in the art will appreciate that the distances between short-range communication networks 1 16 may be considerable. Messages could be relayed from one wireless communication device to another and from short- range communication device to another. When a wireless communication device is temporarily out of range of a short-range communication network 1 16, that wireless device will carry the messages stored in the data storage area 184 (see Figure 2) until it comes in contact with another short-range communication network. At that point, the message data will be transferred to other wireless communication devices in that short-range communication network 1 16 and each of those wireless communication devices will carry the message further until it reaches its intended recipient. Thus, a message could be carried a few feet to its intended destination or a few hundred miles to its destination.

When a large number of conventional wireless communication devices are in physical proximity, such as a sporting event or even in rush- hour traffic, a conventional communication network is often overwhelmed because many wireless communication devices are attempting to connect to the same base station. Thus, too many conventional mobile communication devices in proximity can be a debilitating situation. In contrast, the system 100 can actually take advantage of the presence of a large number of wireless communication devices because a large number of devices will facilitate the movement of messages independent of the conventional service provider network. Thus, the system 100 can facilitate rather than debilitate communication in the presence of a large number of mobile communication devices. For example, a message generated by one user in rush-hour traffic will be quickly relayed to many other wireless communication devices in the same rush-hour traffic. Thus, messages may move quickly up and down a roadway. In addition, some of the wireless communication devices will become part of short-range communication networks in other locations near the roadway. Thus, the message spreads up and down the roadway using the wireless communication devices in automobiles on the roadway and moves away from the roadway as automobiles enter and leave short-range communication networks adjacent to or near the roadway. The system 100 could move a message from, by way of example, Orange County to Los Angeles using a variety of short-range communication networks in the manner described above.

As previously discussed, messages may be categorized in several categories, such as Public Messages, Group Messages, Direct Messages, and Status Messages). In addition, a priority category may be created to disseminate emergency messages. The example of Figure 10 illustrates one embodiment in which an emergency message may be generated by the wireless communication device 126 or received by the wireless communication device 126 from another wireless communication device (not shown). The emergency message can be disseminated to the recipient (e.g., the wireless communication device 364 in Figure 10) in the manner described above with respect to Figure 10. One distinction between an emergency message and other message types is that an emergency message will not be deleted from the data storage area of any wireless communication device until "Message Received" is received or until some instruction is received to delete the emergency message from the data storage area 184. In this embodiment, the emergency message may be distributed in the same fashion described above with respect to Figure 10. When the emergency message reaches its intended recipient (e.g., the wireless communication device 364), the recipient wireless communication device generates a message received or message receipt and transmits it back to the originator (e.g., the wireless communication device 126 or wireless communication device not shown). Because of the dynamic nature of the short-range communication networks 1 16, the Message Received will likely be distributed via a different pathway with a different set of wireless communication devices in different sets of short-range communication networks 1 16. As the Message Read Receipt is distributed, each wireless communication device uses the Message Read Receipt to delete the emergency message from the data storage area 184. If a particular wireless communication device never received the emergency message, the Message Read Receipt may be ignored.

A different emergency message scenario is illustrated in Figure 1 1 . In this scenario, the system 100 may use the network 1 10 to further disseminate an emergency message. In Figure 1 1 , the wireless communication device 120, which has already migrated from the

communication area 350 to the communication area 358 now migrates again and comes within range of the access point 140. As described above, the wireless communication link 142 is established between the wireless communication device 120 and the access point 140. In one embodiment, the access point 140 may be part of short-range communication networks and further disseminate the emergency message in a conventional manner.

Alternatively, the access point 140 may be a gateway to the network 1 10 to permit dissemination of the emergency message via the network 1 10. In this embodiment, the emergency message may require additional headers to identify the recipient. Thus, the wireless access point 140 and network 1 10 may be used to disseminate the emergency message.

In another example application of the system 100, a business may utilize the short-range communication networks 1 16 to disseminate business information in the form of messages, coupons, advertisements, and the like. This is illustrated in Figure 12 where the access point 140 may be a router or Wi-Fi access point associated with a business. A computing device (not shown) associated with the business transmits the necessary business messages to the router 140. As illustrated in Figure 12, the wireless communication device 120 is within a coverage range 374 of the access point 140. The business messages are exchanged between the access point 140 and the wireless communication device 120 via the wireless communication link 142. At the same time, the wireless communication device 120 is within the coverage range 350 of the wireless communication device 126 when the business messages are received by the wireless communication device 120, there is a subsequent exchange of data with the wireless communication device 126 via the wireless communication link 356. At the same time, or at some subsequent point in time, the wireless communication device 128 comes within the coverage range 350 and establishes a communication link 138 with the wireless communication device 126. While within the coverage range 350, the wireless communication devices 126-128 will synchronize the data storage areas 184, thereby disseminating the business messages from the wireless communication device 126 to the wireless communication device 128. Broader dissemination through wireless links may be realized in the manner discussed above with respect to Figures 10-1 1 . In the example illustrated in Figure 12, the wireless communication device 128 travels outside the communication range 350. There may be some period of time where the wireless communication device 128 is not within the coverage range of any other wireless communication devices. At some point in time, the wireless communication device 128 travels within the area of coverage 366 as the wireless communication device 364. A wireless communication link 376 is established there between. The wireless communication devices 128 and 364 exchange data from the data storage area 184. In this manner, the original business messages are delivered to the wireless communication device 364. Thus, the business messages may be disseminated quickly by a large number of wireless communication devices (not shown) within the short- range communication networks 1 16. In addition, wireless communication devices, such as the wireless communication device 128 may be physically carried out of communication range of any other wireless communication device and, when connections are reestablished with another wireless communication device, the business messages are disseminated.

In another alternative embodiment, the user of a wireless communication device 120 may express personal preferences for shopping. For example, the user of the wireless communication device 120 in Figure 12 may be interested in men's clothing. The preferences are broadcast by the wireless communication device 120 to the access point 140. The preference may include not only the general preference for men's clothing, but other options, such as particular items of clothing, sizes of clothing, colors, and the like. In this example, the access point 140 relays the customer preference data to a computer (not shown). The computer compares customer preferences with available stock or preference for sale items, and the like and returns that information to the access point 140. The access point 140 exchanges data in the data storage area 184 with the data in the data storage area 184 of the wireless communication device 120. In this manner, the wireless communication device 120 receives data relating specifically to the user's preferences.

Those skilled in the art will appreciate that other user preferences may be supplied in the form of a user preference profile. In this embodiment, the profile may include information, such as age, business and recreational interests, and the like. Based on the preference profile, the access point 140 can provide business messages customized for an individual user.

The system 100 described above exchanges messages between a number of wireless communication devices. In the example of a shopping mall, there may be hundreds of messages generated that are distributed through hundreds of other phones. Those skilled in the art will appreciate that such a large potential cache of messages requires message management. In one embodiment, the controller 182 (see Figure 2) manages the data storage area 184 by eliminating the oldest messages as new messages are received that exceed some threshold storage level. For example, the data storage area 184 may have a certain capacity. However, it may desirable to reserve at least a portion of that capacity for emergency messages, status messages, and the like. Therefore, a threshold, which may be a percentage of the total storage capacity of the data storage area 184 can be set by the user of the individual wireless communication device or set system-wide as part of the JUMMMP API. When the threshold is exceeded, the controller 182 begins to delete the oldest messages first. In another alternative embodiment, messages may be deleted on the basis of message type. For example, business messages may have a lower priority and be deleted first. In contrast, emergency messages may not be deleted until a specific instruction is received to delete the emergency message or until a Message Read Receipt is received. Other message management techniques may also be used.

Those skilled in the art will appreciate that the memory capacity of wireless communication devices generally increases significantly with each new model or generation of devices introduced to the public. Although the description herein has focused on text messages, increases in storage capacity of the data storage area 184 may allow the dissemination of voice messages or even video messages. The message dissemination occurs in the manner described above. It is only the type of message that differs in this scenario. One advantage of the system 100 is that messages can be delivered even if the recipient wireless communication device is not powered or is temporarily out of range of any other wireless communication devices. This feature is advantageous in an emergency situation. For example, firefighters typically use cellular communication devices with a PTT

technology that allows any one firefighter to push the button and talk to other firefighters in a designated communication group. However, if one or more firefighters are temporarily out of range of the transmitting PTT device, those firefighters will not receive the broadcast. In contrast, the system 100 can disseminate voice messages throughout all group members. Thus, a firefighter that was temporarily out of communication will resynchronize the data storage area 184 upon reconnection to any of the wireless

communication devices within the firefighter group and thereby receive the original message.

Thus, it can be appreciated that the wireless communication system described herein provides a highly dynamic network in which a large number of wireless communication devices may be coupled together in a dynamic fashion to create a large number of short-range communication networks 1 16 and to permit individual users to come and go from any particular short-range communication network.

While the system has been described herein with respect to Wi- Fi (i.e., IEEE 802.1 1 ), other short-range communication devices, such as Zigbee, or the like may be satisfactorily employed with the system 100.

The foregoing described embodiments depict different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely exemplary, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of

components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected", or "operably coupled", to each other to achieve the desired functionality. While particular embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that, based upon the teachings herein, changes and modifications may be made without departing from this invention and its broader aspects and, therefore, the appended claims are to encompass within their scope all such changes and modifications as are within the true spirit and scope of this invention.

Furthermore, it is to be understood that the invention is solely defined by the appended claims. It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations).

Accordingly, the invention is not limited except as by the appended claims.