KR20050016401A - Dsl mobile access router system and method - Google Patents

Abstract

The present invention provides a local mobile device and / or the Internet over a network without the need for mobile devices such as PDAs, mobile phones, and laptops to seamlessly roam between subnets of the mobile wireless network and obtain new or temporary Internet Protocol (IP) addresses. Provides a system and method for enabling communication to a site. The network allows wired IP routers to support wireless mobile devices. The network executes real-time soft-roaming, enabling immediate access of visited mobile devices. Specifically, the network depends on the subnet to share the IP address of the mobile device.

Description

DSL MOBILE ACCESS ROUTER SYSTEM AND METHOD

The present invention relates to network technology. In particular, the present invention relates to maintaining a connection while moving between subnets of a mobile wireless network without obtaining a new Internet Protocol (IP) address.

This patent application was filed on May 13, 2002 and is named "DSL MOBILE ACCESS ROUTER" and prioritized co-pending U.S. Provisional Patent Application No. 60 / 380,594 under 35 USC 119 (e). Insists. Provisional Patent Application No. 60 / 380,594, filed May 13, 2002 and entitled "DSL Mobile Access Router," is also incorporated herein by reference.

IP routing relies on a well-structured hierarchy. Routers interconnect networks and transfer data from one network to another. The network can interconnect with other networks and includes subnetwork. The campus network is commonly connected to the Internet through one or more routers (also known as gateways), allowing devices in the campus network to communicate with nodes on the Internet.

When a block of information or packet is sent from the Internet, the router will examine the first few bits of the IP address and send the packet to the current network that is bounded by the router. Each IP address has a 4 octet format. In general, a person communicates an IP address in dotted decimal format, where each octet is distinguished from another octet by a decimal point and recorded as a decimal integer. The router further examines the next few decimal integers and sends the packet to a subnet that may be a local area network (LAN). The LAN router will examine the last decimal integer of the IP address and send the packet to a particular machine. Within a LAN or subnet, data is delivered using the physical MAC address assigned to each network interface card (NIC). The MAC address is a fixed address that is bound to an Ethernet card. The Address Resolution Protocol (ARP) maps IP addresses to MAC addresses. The router follows the ARP and sends a broadcast message requiring the device associated with a particular IP address to respond according to its MAC address. Transmission based on MAC address outside of the subnet is not possible because there is no logical relationship between the number and the location on the network where they reside. Data is routed to the next higher subnet. If the destination is there, the MAC address is determined and the data is sent. Therefore, outside of the subnet, the IP address is used for routing. Inside the subnet, the MAC address is used for transmission.

In the presence of a mobile device such as a PDA, mobile phone, or laptop computer connected to an access point, the MAC address of the mobile device is associated with an IP address from within the IP address space of the subnet router. If the user selects a mobile device connected to one access point and wants to move with it, and the device is connected to another access point within the same subnet, the new access point responds to the MAC address of the mobile device just entered, It is only necessary for the previous access point to finish responding to the MAC address.

However, if a mobile device moves from one subnet to another, the mobile device cannot communicate over the new (remote) subnet. First, the mobile device is usually configured to send messages through a particular router in its original (home) subnet. Communication from the mobile device will not be sent by the remote subnet because the mobile device no longer exists in the home subnet and the particular router cannot be located immediately. In addition, communication to the mobile device will be routed to the mobile device's home subnet. The router will not know where to send the packet there, so communication will be lost. As a result, the remote subnet must either reconfigure its list of available IP addresses to accommodate the visiting mobile device (this is a cumbersome and expensive process), or must acquire a new IP address each time the mobile device logs on to a new network or subnet. do. As such, the mobile device will have to re-register with the LAN when connecting to the new subnet and may need to re-enter a personal identification number (PIN) or some other password. Thus, seamless, even call channel hand-off can only be made within one subnet, not across different subnets.

1 illustrates a currently available method of managing roaming between subnets for mobile phones or other mobile devices. As described, the Internet 11 allows the mobile device on the home subnet 3 to communicate with the mobile device on the remote subnet 5 via a conventional wired router 12. In this particular example, the mobile device 20 with the IP address is usually connected to the home subnet 3. In other words, subnet 3 is the home subnet for mobile device 20.

If the mobile device 20 is moving from its home subnet 3 to the remote subnet 5, then the mobile device 20 or subnet 5 must undergo some translation. As described above, the mobile device 20 must obtain a new IP address or the remote subnet 5 must reset the list of available IP addresses to accommodate the mobile device 20.

Furthermore, the cables used within the LAN have physical limitations that must be considered in the network architecture. Many LANs use the Ethernet standard provided by IEEE 802.3. Under this standard, 100 Mbit baseband data signals are transmitted over unshielded twisted pairs such as CAT-5. Under the Ethernet standard, the transmission distance is limited to a maximum of 300 feet (91.44 meters) specified in IEEE 802.3. Up to 300 feet (91.44 meters) is based on CSMA / CD collision applications and CAT-5 attenuation criteria.

Although Ethernet can be configured using one common signal wire, these devices are not flexible enough to wire some buildings or campuses. Unlike ordinary telephone circuits, Ethernet wires cannot be bonded directly to each other and copper wires cannot be connected to each other. One solution to this technical limitation is a repeater. The repeater is a simple station connected to two wires. The repeater relays any data received on one wire bit-for-bit on another wire and restores the signal amplitude and timing for the retransmitted packet.

Repeaters are often required for Ethernet networks, but they introduce some drawbacks when constructing large networks. Securing access to public and private property for the purpose of installing, repairing, and inspecting repeater installations can be a difficult and complex task, and provides access to passage rights, permits from pole owners, and rentals from private residences. in need. Supply by the sale or lease of telecommunications equipment, facility (s), or related services can be another challenge. Repeaters can also introduce delays in network signals as signals propagate from one port to another. Accordingly, there is a need to overcome the limitations caused by cables used within Ethernet networks in wireless LAN environments.

What is needed is a system and method for maintaining a permanent IP address when a remote subnet roams across different subnets of a wireless network without having to undergo some translation. These systems and methods should allow the distance limits of network cabling to be extended without relying solely on the use of repeaters.

1 is a schematic diagram of a prior art for a mobile IP network segment and a method for allowing a mobile device, typically based on a home subnet, to connect with a remote subnet using conventional procedures.

2 is a schematic diagram of a mobile IP network segment describing a home subnet and a remote subnet, and a method for allowing a mobile device, typically based on a home subnet, to connect with a remote subnet using the architecture of the present invention.

3 illustrates a mobile IP network segment describing a home subnet and a remote subnet where both subnets are connected to a master subnet, and a method for allowing a mobile device based on a home subnet to connect to a remote subnet using the architecture of the present invention. schematic.

4 is a schematic diagram illustrating a system in which the present invention may be implemented, and particularly a subnet that provides access to a master subnet and manages up to 16 access points to provide roaming for mobile devices.

5 is a flowchart illustrating how a subnet of the present invention may handle roaming from mobile devices visiting within a network.

The present invention allows mobile devices, such as PDAs, mobile phones, and laptops, to seamlessly roam between subnetworks (hereinafter referred to as subnets) of mobile wireless networks and to create new or temporary Internet Protocol (IP) addresses. A system and method are provided that enable communication with a local mobile device and / or an internet site via a network without the need to acquire a network. The network allows wired IP routers to support wireless mobile devices. The network implements real-time soft roaming that enables instantaneous connection of visiting mobile devices. In particular, the network relies on a subnet sharing the mobile device's IP address. When a mobile device connects to a subnet in a network, the subnet sends information about the mobile device to an adjacent subnet. In particular, the subnet may be the current “inbound and outbound” location corresponding to the subnet containing the mobile device's IP address, media access control (MAC) address, and access point and master subnet. Send it. Note that the network can handle any mobile device regardless of its address or home network.

In one aspect of the invention, a mobile wireless network is disclosed. The network may be characterized in that at least one subnet comprises a plurality of subnets connected to a network router. The plurality of subnets may include an xDSL PHY interface and at least one access point connected to the xDSL modem. The network router can be any conventional wired router connected to the Internet. The xDSL modem is preferably connected to the xDSL PHY interface. Each neighboring subnet preferably shares user information, allowing the mobile device to remain connected to the wireless network regardless of which subnet the mobile device is located on. In other words, the mobile device remains connected with the same IP address while moving between subnets.

The subnet may be referred to as a mobile access router (MAR). MAR manages roaming between access points. A MAR includes a plurality of subnet tables that track mobile devices located at its access point (s) and adjacent MAR (s). The subnet table is preferably updated as the mobile device moves from one subnet to another. The subnet table may include the IP address of the mobile device, the MAC address, and the current location corresponding to the subnet and the access point.

The access point may be a wireless antenna or subnet receiver. The current position of the mobile device is characterized in that it is an inbound or outbound position. In other words, a mobile device moving from the first subnet to the second subnet will be identified as outbound in the subnet table for the first subnet and inbound in the subnet table for the second subnet.

Another aspect of the invention provides a method for allowing a mobile device to remain connected to a mobile wireless network. The mobile device preferably accesses the wireless network via an access point and an xDSL modem, where the xDSL modem is connected to the xDSL PHY interface of the subnet. The wireless network preferably includes a plurality of subnets. The method includes (a) assigning each mobile device an IP address, a MAC address, and a current location corresponding to a subnet including an access point and a master subnet, (b) the IP address and MAC as user information in the packet; Inserting an address, (c) broadcasting user information including an IP address, a MAC address, and the current location to an adjacent subnet, and (d) sending an incoming packet to the current location of the mobile device. It is done.

Another aspect of the invention is directed to a mobile wireless network comprising a plurality of subnets arranged in an array of subnets. Each subnet preferably has a plurality of subnets that are not adjacent to the plurality of adjacent subnets. The at least one subnet preferably comprises a network router and at least one access point connected to an xDSL PHY interface and an xDSL modem. The xDSL modem is preferably connected to the xDSL PHY interface. Preferably, each neighboring subnet shares user information, allowing the mobile device to remain connected to the wireless network.

Another aspect of the invention relates to a mobile wireless network comprising a plurality of subnets connected to a master subnet. The master subnet preferably connects to a network router. The network router can be any conventional wired router. The plurality of subnets preferably comprise an xDSL PHY interface and at least one access point connected to the xDSL modem. The xDSL modem is preferably connected to the xDSL PHY interface. Preferably, each neighboring subnet shares user information to allow the mobile device to remain connected to the wireless network.

The master subnet contains a master subnet table, i.e. an address binding record (ABR), that tracks all mobile devices between subnets. Preferably, the master subnet table is updated when the mobile device moves from one subnet to another. The master subnet table preferably contains the IP address, MAC address and current location information of all mobile devices between the subnets.

Another aspect of the invention relates to a mobile wireless network comprising a plurality of subnets. Preferably at least one subnet is connected to a network router, and the plurality of subnets includes at least one access point connected to an xDSL PHY interface and an xDSL modem. The xDSL modem is preferably connected to the xDSL PHY interface. Preferably, each neighboring subnetwork shares user information, allowing the mobile device to remain connected to the wireless network at any location within the wireless network. The mobile device preferably maintains the same IP address when roaming between adjacent subnetworks.

2 is a block diagram illustrating a system in which the present invention is implemented. The present invention is implemented in a mobile wireless network. Although the invention has been described as being implemented in a mobile wireless network, the invention may be implemented in a fixed wireless network. As shown, the mobile device 20 (eg, laptop computer or cellular phone) is initially based on a home subnetwork (subnet) 15 and is connected to an access point 19. Subnets act as routers linked to multiple access points within each subnet. The subnet also connects to the Internet router 12 via a communication connection. The internet router 12 in turn connects to the Internet destination 11 via the communication connection. Subnets simultaneously support the 802.11 b / g / a standard as well as Bluetooth. It should be noted that there can be multiple subnets within a wireless network. In a wireless network, the access points 19 and 17 may be equipped with a wireless antenna and receiver for packet reception. Access points 19 and 17 also designate access points in a wireless (or wired) network. In accordance with the present invention, each subnet can manage up to 16 access points to control roaming and throughput. Each access point can handle up to 40 users. Thus, each subnet can connect up to 640 users. Although FIG. 2 shows only two access points, it should be appreciated that there may be many access points.

In Fig. 2, access points 19 and 17 are connected to xDSL modems 190 and 170, respectively, where xDSL means any DSL modem type. DSL, or digital subscriber line, can support much longer distances and is the technology of choice for broadband service delivery. xDSL modems 190 and 170 are connected to xDSL PHYs 150 and 130, respectively, via telephone lines 155 and 135, respectively. The xDSL modems 190 and 170 can transmit and receive xDSL signals via this modem. The xDSL PHY is the physical interface for the router and is used to handle the transmission of data packets between nodes. As mentioned in the background section, Ethernet cables are limited to approximately 300 feet (91.44 meters). One type of DSL, the ADSL, or asynchronous digital subscriber line, can reach customers up to 15,000 feet (4.5 kilometers) away from a telephone company. To replace Ethernet with xDSL, the MAC and PHY layers from existing routers need to be replaced with xDSL and PHY. In addition, access points 19 and 17 may have an xDSL PHY to perform similar interface functions.

Still referring to FIG. 2, assume that the mobile device 20 wishes to communicate over the Internet 11 while visiting an access point 17 connected to a remote subnet 13. To allow this, subnets 15 and 13 include intelligent tables that share information between subnets. The intelligence table in each subnet contains mobile device information such as the IP address of the mobile device, the MAC address, and the current location corresponding to the access point and subnet. The current location is an inbound or outbound location. The subnet will share this information with each neighboring subnet in the mobile network. Subnet 15 will thus share the mobile device 20's IP address, MAC address, and current location (which of course are initially inbound) with subnet 13 and other neighboring subnets. When mobile device 20 moves from subnet 15 to subnet 13, subnet 15 will update the table to indicate an outbound location for mobile device 20. Subnet 15 will simultaneously notify subnet 13 (and any adjacent subnet) to update the intelligence table to reflect the movement of mobile device 20. Thus, subnet 13 will have an entry for mobile device 20 that will include an inbound entry under the current location column along with the IP address and MAC address of mobile device 20. It should be appreciated that mobile device 20 will maintain a permanent IP address at initial registration in subnet 15 wherever it moves within the network. The mobile device 20 receives a new IP address when logging off and back on again or when moving out of the network. When the mobile device 20 receives a new IP address, the subnet 15 removes the information of the mobile device 20 from its intelligence table and updates the intelligence table to reflect the loss of the mobile device 20. It will notify subnet 13 (and all neighboring subnets). After the mobile device 20 is logged off or out of the network, the IP address can be made available to other mobile devices wishing to access the Internet. An important goal of the present invention is to keep the connection of the mobile device completely wherever the mobile device moves in the network. By sharing information between adjacent subnets, a subnet allows roaming between different subnets while the mobile device maintains a permanent IP address.

Assume that mobile device 20 prepares a message to a destination on the Internet 11. The IP facility of the mobile device 20 splits the message into packets, each packet having a destination IP address that specifies the Internet destination. Each packet will also contain a source IP address configured for mobile device 20. It is to be noted that, along with the packet length and other control information, the source and destination IP addresses are at defined locations in the header of each packet.

Assume that mobile device 20 is a visiting node having a home base on subnet 15. Therefore, it is configured with a suitable IP address for the home subnet and not for the remote subnet 13. In particular, the Internet 11 will route packets addressed to the mobile device 20 to the home subnet 15 regardless of whether the mobile device 20 is connected to the subnet 13. To remedy this problem, intelligence tables in each adjacent subnet including subnet 13 maintain and share the IP address and MAC address of each mobile device.

When subnet 15 receives a packet from the Internet 11, it will momentarily review its intelligence table, recognize that mobile device 20 is outbound from another subnet, and send a packet to neighboring subnet 13 . Subnet 13 will recognize that mobile device 20 is connected to one of its access points. From there the subnet 13 will send a packet to the mobile device 20 via the access point 17. Conversely, when the mobile device 20 sends a message from the remote subnet, the remote subnet will send packets to and from the source address of the mobile device that will belong to the home subnet to the internet router 12. The Internet router 12 transmits the packet to the Internet 11, where the packet is routed to its destination.

The subnet may also include a private network address. At this time, the Internet router 12 supports NAT and supplies a NAT solution for mapping between the private IP address and the public IP address.

3 is a schematic diagram illustrating a mechanism for implementing a mobile IP network according to an embodiment of the present invention. In FIG. 3, the master subnet 14 is connected between the IP router 12 and the subnets 15 and 13. The master subnet 14 is also a router that manages roaming and higher level management and security features. Each master subnet controls up to eight subnets and supports up to 5,120 simultaneous mobile devices. Of particular importance, the master subnet includes an intelligence table, which contains information about all mobile devices in each subnet of the network. Thus, each time a mobile device moves from one subnet to another, the subnet and master subnet will each update their own intelligence table. As in the case of a subnet, the master subnet intelligence table will also include the IP address, the MAC address, and current location information corresponding to the subnet including the access point and the master subnet. Unlike the above subnets, however, the intelligent table of the master subnet will contain tracking information for all subnets. It should also be noted that a wireless network may include multiple master subnets connected to each other to support virtually an unlimited number of users. Each subnet is preferably connected to the master subnet via Fast Ethernet. Master subnet 14 may include a private network address. Internet router 12 provides a NAT solution that maps between private and public IP addresses.

4 is a schematic diagram illustrating a system in which the present invention may be implemented. As shown in Figure 4, each subnet connects to a master subnet and manages up to 16 access points that provide roaming for mobile devices. Subnets can manage up to 16 wireless access points that control roaming and throughput. Each access point preferably supports up to 40 concurrent users. Thus, a subnet can preferably connect up to 640 concurrent users.

The wireless access point acts as a bridge between the conventional wired network and the mobile device. As shown in FIG. 4, the access point provides 360 degree coverage from the center point of the subnet. The access point can also act as a receiver and repeater for transmitting transmissions from one access point to another.

For example, mobile device 20 may roam from its home subnet 15 to a second remote subnet 32 as well as a first remote subnet 22. In a wireless network, access points 21 and 31 are connected to remote subnets 22 and 32. As mentioned above, the access points 21 and 31 may be provided with an antenna and a receiver for receiving a packet. As soon as the mobile device 20 connects to the Internet 11 through its home subnet 15, the home subnet 15 accesses the IP address, MAC address and current location information of the mobile device 20 (e.g., access). Point 1 and MAR 1) will be sent to each adjacent subnet (eg, remote subnets 22 (MAR 2) and 32 (MAR 3)). Neighboring subnets 22 and 32 update their intelligence tables to reflect the registration of mobile device 20. The mobile device 20 maintains a permanent IP address through the network once it registers with the home subnet. When the mobile device 20 roams to the remote subnet 22, the intelligence tables of the home subnet 15 and the first remote subnet 22 indicate that the mobile device 20 has roamed to the first remote subnet 22. Is updated. The current location entry for the mobile device 20 in the intelligence table of the home subnet 15 is changed from "inbound" to "outbound". The current location entry for the mobile device 20 in the intelligence table of the first remote subnet 22 is changed from "outbound" to "inbound". Moreover, the first remote subnet 22 sends the IP address, MAC address and current location information of the mobile device (eg AP 21, MAR 2) to the second remote subnet 32. The second remote subnet 32 updates its intelligence table to reflect the movement of the mobile device 20. When the mobile device 20 roams to the second remote subnet 32, the intelligence tables of the first remote subnet 22 and the second remote subnet 32 are determined by the mobile device 20 on the second remote subnet 32. Updated to indicate roaming. The current location entry for the mobile device 20 in the intelligence table of the first remote subnet 22 is changed from "inbound" to "outbound". The current location entry for the mobile device 20 in the second remote subnet 32 is changed from "outbound" to "inbound". Further, the second remote subnet 32 sends the mobile device's IP address, MAC address and current location information (e.g. AP 31) to the third remote subnet, etc. until the mobile device logs off or roams out of the network. do. Regardless of where the mobile device 20 is located, it is important to know that the remote subnets 22, 32 communicate with the master subnet 14 or the IP router 12. All incoming packets are sent first to the home subnet 15 before being sent to the remote subnet. Likewise, all outgoing packets sent by the mobile device 20 are first sent to the home subnet 15 before being received by the master subnet 14 or the IP router 12. In this way, the data for each mobile device is maintained not only in the entire wireless network, but in the intelligent table of the adjacent subnet as well as the subnet where the mobile device is located. This saves a substantial amount of memory.

5 is a flowchart illustrating how the subnet of the present invention handles roaming from mobile devices visiting within the network. As shown, the method begins at step 60, in which the subnet assigns each mobile device an IP address, a MAC address, and a current location corresponding to the access point and subnet. In step 64, the subnet inserts the IP address and MAC address into the packet as user information. In step 66, the subnet then broadcasts user information, including the IP address, MAC address, and current location, to the adjacent subnet. Then, in step 68, the subnet sends the incoming packet to the current location of the mobile device. The current location may be a remote subnet. If the current location is a remote subnet, the remote subnet sends packets to the mobile device via the access point and the subnet.

The invention has been described by way of specific embodiments that are incorporated in the detailed description in order to facilitate an understanding of the construction and principles of operation of the invention. Such references in this specification to specific embodiments thereof and the detailed description are not intended to limit the scope of the claims appended hereto. It will be apparent to those skilled in the art that modifications may be made in the embodiments selected for description without departing from the spirit and scope of the invention.

The present invention provides for local mobile devices and / or over a network without the need for mobile devices such as PDAs, mobile phones, laptops to seamlessly roam between subnetworks of the mobile wireless network and obtain new or temporary Internet Protocol (IP) addresses. It is used to provide a system and method for enabling communication with an Internet site.

Claims (45)

As a mobile wireless network, A plurality of subnetworks, wherein at least one subnetwork includes a xDSL PHY interface and at least one access point connected to an xDSL modem, the xDSL modem being connected to an xDSL PHY interface. A subnetwork, wherein each neighboring subnetwork shares user information to enable the mobile device to remain connected to the wireless network. The mobile wireless network of claim 1, wherein the subnetwork is a mobile access router. 3. The mobile wireless network of claim 2, wherein the mobile access router includes a plurality of subnetwork tables to track the mobile device located at its access point (s) and adjacent mobile access routers. 4. The mobile wireless network of claim 3 wherein the subnetwork table is updated when the mobile device moves from one subnet to another. 4. The network of claim 3, wherein the subnetwork table includes an Internet Protocol (IP) address, a media access control (MAC) address of the mobile device, a current corresponding to the access point and the subnetwork. A mobile wireless network, comprising a location. The mobile wireless network of claim 1, wherein the access point is a wireless antenna. 6. The mobile wireless network of claim 5, wherein the current location is an inbound or outbound location.  A method of allowing a mobile device to remain connected to a mobile wireless network, the method comprising: Wherein the mobile device accesses the wireless network via an access point and an xDSL modem, the xDSL modem is connected to an xDSL PHY interface of a subnetwork, the wireless network comprising a plurality of subnetworks, the method comprising: Assigning each mobile device an Internet Protocol (IP) address, a media access control (MAC) address, and a current location corresponding to the access point and the subnetwork; Inserting the IP address and the MAC address into the packet as user information; Broadcasting the user information to an adjacent subnetwork; Sending an incoming packet to the current location of the mobile device; Including a mobile device that remains connected to the mobile wireless network. 10. The method of claim 8, wherein the user information includes the IP address, the MAC address and the current location. 9. The method of claim 8, wherein the subnetwork is a mobile access router. 12. The method of claim 10, wherein the mobile access router comprises a plurality of subnetwork tables for tracking the mobile device located in an adjacent mobile access router. 12. The method of claim 11, wherein the subnet table is updated when the mobile device moves from one subnetwork to another, thereby allowing the mobile device to remain connected to the mobile wireless network. 12. The mobile device of claim 11, wherein the subnetwork table includes an internet protocol (IP) address of the mobile device, a media access control (MAC) address, and a current location corresponding to the access point and the subnetwork. To keep connected to the mobile wireless network. 10. The method of claim 8, wherein the access point is a wireless antenna. The method of claim 13, wherein the current location is an inbound or outbound location. The method of claim 15, wherein the inbound or outbound location corresponds to an access point and a subnetwork, such that the mobile device can remain connected to the mobile wireless network. As a mobile wireless network, A plurality of subnetworks, arranged in an array of subnetworks, each of which has a plurality of neighboring subnetworks and a plurality of non-adjacent subnetworks, the at least one subnetwork being connected to a network router and having an xDSL PHY interface at least one access point connected to an xDSL modem, wherein the xDSL modem comprises a plurality of subnetworks, connected to the xDSL PHY interface, wherein each neighboring subnetwork shares user information so that A mobile wireless network that allows to remain connected to a wireless network. 18. The mobile wireless network of claim 17 wherein the subnetwork is a mobile access router. 19. The mobile wireless network of claim 18, wherein the mobile access router includes a plurality of subnetwork tables for tracking the mobile device located in an adjacent mobile access router. 20. The mobile wireless network of claim 19 wherein the subnetwork table is updated when the mobile device moves from one subnet to another. 20. The mobile radio of claim 19, wherein the subnetwork table includes an internet protocol (IP) address of the mobile device, a media access control (MAC) address, and a current location corresponding to the access point and the subnetwork. network. 18. The mobile wireless network of claim 17, wherein the access point is a wireless antenna. 22. The mobile wireless network of claim 21 wherein the current location is an inbound or outbound location. 24. The mobile wireless network of claim 23 wherein the inbound or outbound location corresponds to an access point and a subnetwork. As a mobile wireless network, A plurality of subnetworks connected to a master subnetwork, the master subnetwork including at least one access point connected to a network router and connected to an xDSL PHY interface and an xDSL modem, wherein the xDSL modem is connected to the xDSL PHY. Connected to an interface, wherein each neighboring subnetwork shares user information such that the mobile device remains connected to the wireless network. 26. The mobile wireless network of claim 25, wherein the subnetwork is a mobile access router. 27. The mobile wireless network of claim 26, wherein the mobile access router comprises a plurality of subnetwork tables for tracking the mobile device located in an adjacent mobile access router. 28. The mobile wireless network of claim 27 wherein the subnetwork table is updated when the mobile device moves from one subnet to another. 28. The mobile radio of claim 27 wherein the subnetwork table includes an internet protocol (IP) address of the mobile device, a media access control (MAC) address, and a current location corresponding to the access point and the subnetwork. network. 26. The mobile wireless network of claim 25, wherein the access point is a wireless antenna. 30. The mobile wireless network of claim 29, wherein the current location is an inbound or outbound location. 32. The mobile wireless network of claim 31 wherein the inbound or outbound location corresponds to an access point and a subnetwork. 26. The mobile wireless network of claim 25, wherein the master subnetwork includes a master subnetwork table to track all mobile devices between the subnetworks. 34. The mobile wireless network of claim 33 wherein the master subnetwork table is updated when the mobile device moves from one subnet to another. 34. The mobile wireless network of claim 33, wherein the master subnetwork table includes an IP address, a MAC address, and current location information of all mobile devices between the subnetworks. 36. The mobile wireless network of claim 35, wherein the current location is an inbound or outbound location. 37. The mobile wireless network of claim 36, wherein the inbound or outbound location corresponds to an access point and a subnetwork. As a mobile wireless network, A plurality of subnetworks, the at least one subnetwork being connected to a network router and comprising at least one access point connected to an xDSL PHY interface and an xDSL modem, the xDSL modem being connected to the xDSL PHY interface A subnetwork, wherein each neighboring subnetwork shares user information so that the mobile device can access the wireless network at any location within the wireless network without obtaining a new IP address when the mobile device roams between the neighboring subnetworks. A mobile wireless network that allows to remain connected. 39. The mobile wireless network of claim 38 wherein the subnetwork is a mobile access router. 40. The mobile wireless network of claim 39, wherein the mobile access router includes a plurality of subnetwork tables to track the mobile device located at its access point (s) and adjacent mobile access routers. 41. The mobile wireless network of claim 40 wherein the subnetwork table is updated when the mobile device moves from one subnet to another. 41. The mobile radio of claim 40 wherein the subnetwork table includes an internet protocol (IP) address of the mobile device, a media access control (MAC) address, and a current location corresponding to the access point and the subnetwork. network. 39. The mobile wireless network of claim 38 wherein the access point is a wireless antenna. 43. The mobile wireless network of claim 42 wherein the current location is an inbound or outbound location. 45. The mobile wireless network of claim 44, wherein the inbound or outbound location corresponds to an access point and a subnetwork.