Mobile wireless base station

• US 7,995,516 B2
• Filed: 06/30/2003
• Issued: 08/09/2011
• Est. Priority Date: 01/28/2003
• Status: Active Grant

• Current Assignee: Top Glory Technology Limited
• Original Assignee: Top Glory Technology Limited
• Inventors: Yang, Yu, Wang, Weizhou, Zhou, Zhen-Hong, Qingxin, Wei, Lei, Shi
• Primary Examiner(s): Cai; Wayne
• Assistant Examiner(s): Huynh; Chuck
• Application Number:
  US10/515,771
• Publication Number:
  US 20060098620A1
• Time in Patent Office: 2,962 Days
• Field of Search: 370/352, 370/328, 370/338, 370/465, 370/331, 455/445, 455436-444
• US Class Current: 370/328
• CPC Class Codes: H04L 12/46 Interconnection of networks
• CPC Class Codes: H04L 12/462 LAN interconnection over a bridge based backbone
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04M 2203/1091 Fixed mobile conversion
• CPC Class Codes: H04M 2207/18 wireless networks
• CPC Class Codes: H04M 7/009 in systems involving PBX or KTS networks
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

A mobile wireless bridge (MWB) (110) is able to bridge traffic in either direction between a wireless LAN (140) and a wireless WAN (130), and support roaming of LAN clients (141-143, 151-153) and of the MWB (110) itself. Through the MWB (110), wired (150) and wireless LAN (140) clients (141-143, 151-153) and users are provided Internet (190) connectivity even if the LAN client (141-143, 151-153) is not otherwise able to access the wireless WAN (120). Preferred MWBs (110) will utilize mobile cellular communication networks 100 as part of a WAN (120, 130) used to obtain access to Internet (190) resources. LAN clients (141-143, 151-153) and users can also access each other through the MWB (110) with the MWB (110) functioning as a hub, switch, gateway, and/or access point. Some MWBs (110) will be adapted to access multiple types of LANs (140, 150) and multiple types of WANs (120, 130).

Claims

1. A method of providing a LAN client access to a WAN resource comprising:

bridging a wireless WAN, a wired WAN, a wireless LAN and a wired LAN with a first mobile wireless bridge;

causing the first mobile wireless bridge to authenticate the identity of said LAN client attempting to access a WAN resource prior to providing access to the WAN resource; and

allowing for seamless interfacing between said wired or wireless LAN client and said wired or wireless WAN resource whereby the first mobile wireless bridge is adapted to interface with a variety of WANs and to seamlessly switch between unreliable or undesirable WAN connections due to WAN failure, disconnection, and remoteness;

providing a second mobile wireless bridge interconnected to the first mobile wireless bridge;

bridging a wireless WAN, a wired WAN, a wireless LAN and a wired LAN with the second mobile wireless bridge based on cooperation between the first and second mobile wireless bridges, which interact with each other, such that the first mobile wireless bridge hands off the communication to the second mobile wireless bridge wherein the handoff occurs based on the second wireless bridge being better than the first wireless bridge to satisfy the needs of the client based on a plurality of services being available on the second wireless bridge when both the first and second mobile wireless bridges continue to be within range to communicate with the clients, wherein said plurality of services available includes a higher speed internet access compared to the first mobile wireless bridge and wherein the first mobile wireless bridge and the second mobile wireless bridge cooperate to share the higher bandwidth; and

causing the second mobile wireless bridge to authenticate the identity of a LAN client attempting to access a WAN resource prior to providing access to the WAN resource; and

allowing for seamless interfacing between said wired or wireless LAN client and said wired or wireless WAN resource whereby at least one of the first or second mobile wireless bridges are adapted to interface with a variety of WANs and to seamlessly switch between unreliable or undesirable WAN connections due to WAN failure, disconnection, and remoteness.

2. The method of claim 1 wherein the first mobile wireless bridge comprises a subscriber identity module that identifies the first mobile wireless bridge to the wireless WAN.

3. The method of claim 1 wherein causing the first and second mobile wireless bridges to authenticate the identity of a LAN client comprises having the client authenticated via the interne through the use of Web Portal, IEEE 802.1x or PPPoE.

4. The method of claim 1 comprising obtaining the following information for the LAN client:

(i) MAC address (macAddr);

(ii) up link rate (upRate);

(iii) down link rate (downRate);

(iv) bytes transmitted by the client in the current period (upCount);

(v) Bytes received by the client in the current period (downCount);

(vi) total bytes transmitted by the client (upTotal); and

total bytes received by the client (downTotal).

5. The method of claim 4 wherein:

the first bridge determines whether the bytes transmitted/received by the client in the current period is bigger than an up/down link rate set for this client when the packets from/to this client are going to enter a relative queue; and

if the bytes transmitted/received by the client in the current period is not bigger than the up/down link rate set for this client, the bridge places the packets into the relative queue to wait to be transmitted/received; and

if the bytes transmitted/received by the client in the current period is bigger than the up/down link rate set for this client, the first bridge abandons the packets.

6. The method of claim 4 wherein the upCount and the downCount are accumulated respectively in accordance with the transmission and reception of data packets, and at the start point of each period the upCount and the downCount is set to zero.

7. The method of claim 4 wherein the first wireless bridge supports the transmission of data, voice, and video communication packets between the wireless WAN, wired WAN, wireless LAN and wired LAN.

8. A wireless bridge having an access controller and adapted to function as a bridge between at least one LAN comprising:

a first and a second mobile wireless bridge, the first and second mobile wireless bridges interconnected with each other, and

wherein the first mobile wireless bridge and the second mobile wireless bridge interact with each other to cooperate to determine when the second mobile wireless bridge should establish communications with at least two networks forming a plurality of clients such that the first mobile wireless bridge hands off the communication to the second mobile wireless bridge, and

wherein the handoff occurs based on the second wireless bridge being better than the first wireless bridge to satisfy the needs of the client based on a plurality of services being available on the second wireless bridge when both the first and second mobile wireless bridges continue to be within range to communicate with the clients, wherein said plurality of services available includes a higher speed internet access compared to the first mobile wireless bridge and wherein the first mobile wireless bridge and the second mobile wireless bridge cooperate to share the higher bandwidth; and

at least one WAN whereby at least one of said first and second mobile wireless bridges are adapted to interface with a plurality of WANs and to seamlessly switch between WANs if a WAN being used becomes unavailable due to disconnection, failure of the WAN signal, unreliability of the WAN signal and/or loss of signal, and further whereby the wireless bridge is adapted to couple LANs to internet resources without the need for hardware and software required to directly access a wired or wireless WAN; and

wherein the first mobile wireless bridge and the second mobile wireless bridge authenticating any of the plurality of clients trying to obtain access to the WAN prior to providing WAN access.

9. The bridge of claim 8 comprising at least one wireless WAN module adapted communicate with a wireless WAN and at least one wireless LAN module adapted to communicate with a wireless LAN.

10. The bridge of claim 9 wherein the at least one wireless LAN module is adapted to utilize the IEEE 802.11 protocol.

11. The bridge of claim 9 further comprising a subscriber identity module adapted to provide the bridge access to a wireless WAN.

12. The bridge of claim 9 further comprising at least one wired WAN module adapted to communicate with a wired WAN and at least one wired LAN module adapted to communicate with a wired LAN.

13. The bridge of claim 12 wherein the bridge is adapted to authenticate wired LAN and wireless LAN access.

14. The bridge of claim 13 wherein the bridge is adapted to use IEEE802.1X, Radius Client, Web Portal and or PPPoE in authenticating WAN access.

15. The bridge of claim 12 further comprising a spanning tree module bridging the wireless LAN and wired LAN modules.

16. The bridge of claim 12 further comprising a network address translation module adapted to modify source and or destination addresses of packets passing between the LAN and WAN modules.

17. The bridge of claim 12 wherein each of the wired WAN and wired LAN modules comprises an RJ45 interface.

18. The bridge of claim 17 wherein the wired WAN module further comprises at least an E1/T1 interface and an optical interface.

19. The bridge of claim 9 wherein the wireless WAN module is adapted to use at least one of the following:

GPRS, CDMA 1X, CDMA 2000, UMTS, and Satellite.

20. The bridge of claim 19 further comprising additional wireless WAN modules adapted to use at least one of the following GPRS, CDMA 1X, CDMA 2000, UMTS, and Satellite.

21. The bridge of claim 8 wherein the bridge is adapted to function as a bridge between the at least one LAN and at least two WANs wherein the LAN is a wireless LAN, one of the at least two WANs is a wireless WAN, and a second of the at least two WANs is a wired WAN.

22. The bridge of claim 9 wherein the bridge is adapted to communicate with a plurality of wireless bridges through a wireless distribution system.

23. A network comprising two wireless sub-networks coupled together by the wireless bridges of claim 22.

24. The network of claim 23 the two wireless bridges are coupled together via a wireless distribution system.

25. A network comprising two wireless sub-networks coupled together by the wireless bridges of claim 8.

26. The network of claim 25 wherein the two wireless bridges are coupled together via a wireless distribution system.

27. A method of coupling at least two wireless networks together by providing a first mobile wireless bridge adapted to communicate with each of the at least two wireless networks comprising the steps of:

providing at least one access controller to control the wireless network;

positioning the mobile wireless bridge in a location where the mobile wireless bridge can communicate with each of the at least two wireless networks to establish a connection when a wireless signal becomes unavailable, unreliable or is lost, and can authenticate connection to the wireless network by any LAN client trying to obtain access,

causing the first mobile wireless bridge to establish communications with each of the at least two networks and further wherein the first mobile wireless bridge attempts to maintain wireless network access despite the movement of the first mobile wireless bridge to a different geographic location until a handoff occurs; and

providing a second mobile wireless bridge interconnected with the first mobile wireless bridge, wherein the first mobile wireless bridge and the second mobile wireless bridge interact with each other to cooperate to determine when the second mobile wireless bridge should establish communications with each of the at least two networks such that the first mobile wireless bridge hands off the communication to the second mobile wireless bridge, and

wherein the handoff occurs based on the second wireless bridge being better than the first wireless bridge to satisfy the needs of the client based on a plurality of services being available on the second wireless bridge when both the first and second mobile wireless bridges continue to be within range to communicate with the clients, wherein said plurality of services available includes a higher speed internet access compared to the first mobile wireless bridge and wherein the first mobile wireless bridge and the second mobile wireless bridge cooperate to share the higher bandwidth.

28. The method of claim 27 wherein causing the first bridge to establish communications with each of the at least two networks comprises providing the first bridge with a subscriber identity module and causing the first bridge to use the subscriber identity module to identify itself to the wireless WAN.