Wireless architecture for a traditional wire-based protocol

• US 9,198,084 B2
• Filed: 01/18/2007
• Issued: 11/24/2015
• Est. Priority Date: 05/26/2006
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Dharmaraju, Dinesh, Krishnan, Ranganathan, Leung, Lauren KwanKit
• Primary Examiner(s): Ajayi, Joel
• Application Number:
  US11/624,642
• Publication Number:
  US 20080037506A1
• Time in Patent Office: 3,232 Days
• Field of Search: 455/554.2, 455/405, 370/252, 370/386
• US Class Current: 1/1
• CPC Class Codes: H04W 28/22 Negotiating communication rate

Abstract

Embodiments are described in connection with transferring data traditionally communicated through a wired link over a high-speed wireless link. The disclosed embodiments provide the wired and/or wireless data communication with minimal changes on the existing wired architecture. According to an embodiment is an apparatus for communicating wirelessly over a traditional wired link. The apparatus includes a transmitter comprising a host and a first portion of a client connected by a wired link and a receiver comprising a second portion of the client. According to some embodiments, the apparatus can include a query module that determines an operation rate based in part on a rate supported by a medium access control and a retransmission statistic and an assigner module that assigns a communication to a wired protocol or a wireless protocol.

Claims

1. A method for determining an operation rate for transferring data traditionally sent by a wired link over a high-speed wireless link, the method being performed by a transmitter, the method comprising:

receiving an application data rate that a medium access control (MAC) layer supports from a receiver, with which the transmitter can communicate using a wireless or wired link, in response to sending a query to find out the application data rate;

measuring a round trip delay;

ascertaining a forward link rate and a reverse link rate based on the measured round trip delay;

comparing the forward link rate and the reverse link rate to determine a minimum rate; and

assigning the minimum rate as an operation rate, for both forward and reverse links.

2. The method of claim 1, further comprising communicating the operation rate to the receiver.

3. The method of claim 1, further comprising:

determining whether the forward link rate or the reverse link rate is a lower rate; and

designating the lower rate as the operation rate.

4. The method of claim 1, wherein the transmitter comprises a host component connected to a client component, and further comprising:

comparing the forward link rate, the reverse link rate, the application data rate, a maximum capacity of the host component, and a maximum capacity of the client component to determine a lowest rate; and

assigning the lowest rate as the operation rate, for both forward and reverse links.

5. The method of claim 4, further comprising:

establishing a minimum allowable rate; and

adjusting the operation rate if it is below the minimum allowable rate.

18. The method of claim 1, further comprising communicating using a low overhead mode, the communicating comprising:

placing forward link data in a buffer;

requesting unidirectional channel time allocations (CTAs) based on a size of the buffer; and

sending the forward link data.

20. The method of claim 1, further comprising communicating using a low latency mode, comprising:

requesting a CTA for m msec in a forward direction;

requesting a CTA for n msec in a reverse direction; and

comparing the forward direction CTA to the reverse direction CTA.

6. A method for configuring a traditionally wired device to communicate either through a wired protocol or through a wireless protocol, comprising:

placing a first portion of a client on a sender;

placing a second portion of the client on a receiver;

providing wired functionality and wireless functionality at the receiver;

comparing a forward link rate and a reverse link rate to determine a minimum rate; and

assigning the minimum rate as a data rate, for both forward and reverse links;

wherein the receiver selectively determines whether to utilize a wireless link, at the data rate received from the sender, or a wired link based in part on the data rate, wherein the receiver further determines whether to switch between the wireless and the wired link.

7. The method of claim 6, further comprising:

connecting the sender to a data source; and

interfacing the first portion of the client to a host included on the sender with a wired link.

8. The method of claim 6, further comprising connecting the receiver to a display.

9. The method of claim 6, wherein the first portion of the client and the second portion of the client are distinct portions of a same client.

10. An apparatus for communicating wirelessly over a traditional wired link, comprising:

a transmitter comprising a host and a first portion of a client, wherein the host and the first portion of the client are connected by a wired link; and

a receiver comprising a second portion of the client, wherein the receiver selectively determines whether to utilize a wireless link, at a data rate received from the transmitter, or the wired link based in part on the data rate;

wherein the transmitter compares a forward link rate and a reverse link rate to determine a minimum rate;

wherein the transmitter assigns the minimum rate as the data rate, for both forward and reverse links; and

wherein the receiver further determines whether to switch between the wireless and the wired link.

11. The apparatus of claim 10, wherein the host of the transmitter comprises:

a query module that determines the data rate based in part on a rate supported by a medium access control and a retransmission statistic; and

an assigner module that assigns a communication to a wired protocol or a wireless protocol.

12. The apparatus of claim 11, wherein the data rate is also determined based on a rate of the wireless link.

13. The apparatus of claim 10, wherein the second portion of the client comprises a notifier module that sends a notification of an application data rate.

14. The apparatus of claim 10, wherein the transmitter is connected to a data source and the receiver is connected to an interface device.

15. The apparatus of claim 10, wherein the transmitter and receiver operate in one of a low overhead mode and a low latency mode.

16. A mobile device for communicating over a wired link or a wireless link, comprising:

means for receiving, from a transmitter, a data rate for a communication;

means for communicating over a wireless link;

means for determining whether the data rate is below a minimum allowable rate and adjusting the data rate when the data rate is below the minimum allowable rate;

means for communicating over a wired link; and

means for selectively determining whether to utilize the wireless link, at the data rate, or the wired link based in part on the data rate, wherein the means for selectively determining comprises means for determining whether to switch between the wireless link and the wired link.

17. The mobile device of claim 16, wherein the switch between the wireless link and the wired link occurs during a single communication.

19. A method for communicating over a wired link or a wireless link, comprising:

receiving, from a transmitter, a communication data rate;

determining whether the communication data rate is below a minimum allowable rate and adjusting the communication data rate when the communication data rate is below the minimum allowable rate; and

selectively determining whether to utilize a wireless link, at the communication data rate, or a wired link based in part on the communication data rate, wherein the selectively determining comprises determining whether to switch between the wireless link and the wired link.

21. The method of claim 19, further comprising communicating using a low latency mode, comprising:

sending reverse link data during CTAs reserved for a reverse direction; and

deriving a time duration of a medium access control frame.

26. The method of claim 19, further comprising communicating using a low overhead mode, comprising:

placing reverse link data in a buffer;

requesting reverse direction CTAs;

sending reverse link data; and

communicating data to a host in a reverse encapsulation packet.

22. A non-transitory computer readable medium comprising computer-executable instructions for:

receiving, at a transmitter, an application data rate that a medium access control (MAC) layer supports from a receiver, with which the transmitter can communicate using a wireless or wired link, in response to sending a query to find out the application data rate;

calculating a round trip delay;

determining a forward link rate and a reverse link rate based in part on the calculated round trip delay;

comparing the forward link rate and the reverse link rate to determine a minimum rate; and

assigning the minimum rate as an operation rate, for both forward and reverse links.

23. The computer readable medium of claim 22, further comprising computer-executable instructions for sending the operation rate to a receiver.

24. The computer readable medium of claim 22, further comprising computer-executable instructions for:

determining a lowest rate of the forward link rate, the reverse link rate, the application data rate, and a maximum capacity of a client;

designating the determined lowest rate as the operation rate; and

sending the operation rate to a receiver.

25. A processor that executes instructions for communicating over a wired link or a wireless link, the instructions comprising:

receiving, from a transmitter, a communication data rate;

determining whether the communication data rate is below a minimum allowable rate and adjusting the communication data rate when the communication data rate is below the minimum allowable rate; and

selectively determining whether to communicate over a wired link, at the communication data rate, or a wireless link based in part on the communication data rate, wherein the selectively determining comprises determining whether to switch between the wireless link and the wired link.