Peripheral Sharing USB Hub for a Wireless Host

• US 20080005262A1
• Filed: 06/16/2006
• Published: 01/03/2008
• Est. Priority Date: 06/16/2006
• Status: Abandoned Application

• Current Assignee: Standard Microsystems Corporation (Microchip Technology Incorporated)
• Original Assignee: Standard Microsystems Corporation (Microchip Technology Incorporated)
• Inventors: Wurzburg, Henry, Bohm, Mark R., Fu, Mark Y.
• Application Number:
  US11/424,772
• Publication Number:
  US 20080005262A1
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: G06F 13/4022 using switching circuits, e.g. switching matrix, connection or expansion network G06F13/4009 takes precedence
• CPC Class Codes: G06F 2213/4004 Universal serial bus hub with a plurality of upstream ports

Abstract

In various embodiments, a wireless host and a wired host may communicate with downstream devices through a USB switching hub. A wireless host/wireless bridge may be temporarily physically coupled to an upstream port of the USB switching hub to complete association with another wireless bridge coupled to the USB switching hub as a downstream device through a downstream port. During association, the host and downstream wireless bridge may exchange an encryption key to be used for future wireless communications. After association, the wireless host may be disconnected from the USB switching hub to communicate remotely. In some embodiments, the wireless host may not need to be physically coupled to the USB switching hub during association.

Claims

1. An apparatus, comprising:

a Universal Serial Bus (USB) switching hub, comprising;

a plurality of upstream ports; and

a plurality of downstream ports;

wherein a first upstream port of the plurality of upstream ports is operable to couple to a first host;

wherein a second upstream port of the plurality of upstream ports is operable to communicate with a wireless host;

wherein the at least a subset of downstream ports of the plurality of downstream ports are accessible to the first upstream port and the second upstream port.

2. The apparatus of claim 1, wherein the USB switching hub further comprises:

downstream switching logic coupled between the plurality of upstream ports and the plurality of downstream ports;

wherein the plurality of downstream ports consists of N downstream ports;

wherein the downstream switching logic is configured to electronically switch communications between;

a) a downstream port of the plurality of downstream ports and a first upstream port of the plurality of upstream ports to

b) the downstream port of the plurality of downstream ports and a second upstream port of the plurality of upstream ports;

wherein the USB switching hub is configured to be enumerated with a substantially similar hub configuration through each of the plurality of upstream ports;

wherein the hub configuration includes N downstream ports.

3. The apparatus of claim 1, wherein the USB switching hub is operable to switch communications without upstream devices coupled to the first upstream port and the second upstream being required to re-enumerate the USB switching hub.

4. The apparatus of claim 1, wherein the second upstream port is coupled to a media access controller and a transceiver.

5. The apparatus of claim 1, further comprising a wireless bridge coupled to a downstream port of the USB switching hub for association with the wireless host when the wireless host is coupled to the first upstream port.

6. The apparatus of claim 5, wherein the wireless bridge is internal to the USB switching hub.

7. The apparatus of claim 6, wherein the wireless bridge and the transceiver are internal to the USB switching hub.

8. The apparatus of claim 1, wherein the wireless host includes a media access controller and a transceiver.

9. The apparatus of claim 1, wherein the second port comprises switching logic operable to switch upstream logic and downstream logic with respect to the second port and at least a subset of the plurality of downstream ports, respectively.

10. The apparatus of claim 1, wherein the second upstream port is operable to communicatively couple to a plurality of wireless hosts.

21. The system of claim 1, wherein the first host is a second wireless host.

11. A method, comprising:

communicating between a wired host and at least a subset of a plurality of downstream devices coupled to a Universal Serial Bus (USB) switching hub; and

wirelessly communicating between a wireless host and at least a subset of a plurality of downstream devices coupled to the USB switching hub.

12. The method of claim 11, further comprising associating a wireless host with a wireless bridge coupled to a USB switching hub.

13. The method of claim 12, wherein associating the wireless host comprises:

physically coupling the wireless host to a first upstream port of the USB switching hub;

physically coupling a wireless bridge to a downstream port of the USB switching hub; and

implementing an association protocol between the wireless host and the wireless bridge.

14. The method of claim 12, wherein associating the wireless host comprises entering a code from one of the wireless host and the wireless bridge to the other of the wireless host and the wireless bridge.

15. The method of claim 11, further comprising:

the wired host enumerating the USB switching hub using a first hub configuration for the USB switching hub;

the wireless host enumerating the USB switching hub using a hub configuration substantially similar to the first hub configuration for the USB switching hub; and

switching communications between at least one of the plurality of downstream devices and the wired host to the wireless host.

16. The method of claim 15, wherein the wireless host is not required to re-enumerate the USB switching hub when communications are switched.

17. The method of claim 11, wherein the wired host communicates with at least a subset of a plurality of downstream devices coupled to the USB switching hub substantially simultaneously with the wireless host communicating with at least a subset of a plurality of downstream devices coupled to the USB switching hub.

18. A system, comprising:

a Universal Serial Bus (USB) switching hub, comprising;

a plurality of upstream ports;

a plurality of downstream ports; and

downstream switching logic coupled between the plurality of upstream ports and the plurality of downstream ports;

wherein a first upstream port of the plurality of upstream ports is operable to couple to a first host;

wherein a second upstream port of the plurality of upstream ports is operable to communicate with a second wireless host;

wherein the at least a subset of downstream ports of the plurality of downstream ports are accessible to the first upstream port and the second upstream port;

wherein the USB switching hub is configured to be enumerated with a substantially similar hub configuration by each of the plurality of upstream devices coupled to its respective one of the plurality of upstream ports.

19. The system of claim 18, wherein the USB switching hub is operable to switch communications without upstream devices coupled to the first host and the second wireless host being required to re-enumerate the USB switching hub.

20. The system of claim 18, further comprising delaying switching communications of the subset of the plurality of downstream ports if there is an active transfer in progress between the downstream port and the first upstream port, wherein switching communications is delayed by an intelligent port routing switch.