Systems and methods for digital data transmission rate control

• US 20060171414A1
• Filed: 11/23/2005
• Published: 08/03/2006
• Est. Priority Date: 11/24/2004
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Steele, Brian, Wiley, George A., Katibian, Behnam
• Granted Patent: US 8,699,330 B2
• Time in Patent Office: Days
• US Class Current: 370/468
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/19 at layers above the network layer network arrangements for networked applications for scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04L 47/365 Dynamic adaptation of the packet size
• CPC Class Codes: H04N 21/238 Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams hybrid fiber coaxial [HFC] networks for downstream channel allocation for video distribution H04L12/2801; flow control in packet networks H04L47/10; real-time communication protocols in data switching networks H04L65/00; scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/23805 Controlling the feeding rate to the network, e.g. by controlling the video pump
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613
• CPC Class Codes: H04N 21/658 Transmission by the client directed to the server
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection

Abstract

The present invention provides systems and methods for adaptive digital data transmission rate control. A digital data transmission system for adaptively transferring packets over a transmission link includes a client device having a bandwidth control module and a host device coupled to the client device over the transmission link. The host device includes one or more bandwidth control registers and a packet builder. The bandwidth control module determines a packet speed and/or size for packets transmitted from the host device to the client device over the transmission link. The bandwidth control registers store the requested packet size and/or rate. The packet builder accesses these registers when transmitting packets to determine the requested packet size and/or rate.

Claims

1. A digital data transmission system for adaptively transferring packets over a transmission link, comprising:

a client device including a bandwidth control module; and

a host device coupled to the client device over the transmission link, wherein the host device includes one or more bandwidth control registers and a packet builder, wherein the bandwidth control module determines a packet speed and size for packets transmitted from the host device to the client device over the transmission link.

2. The digital data transmission system of claim 1, wherein the bandwidth control module transmits a packet speed to the host device that is placed in a bandwidth control register.

3. The digital data transmission system of claim 1, wherein the bandwidth control module transmits a packet size to the host device that is placed in a bandwidth control register.

4. The digital data transmission system of claim 1, wherein the bandwidth control module transmits a packet speed and a packet size to the host device that is placed in bandwidth control registers.

5. The digital data transmission system of claim 1, wherein the speed of packets sent over the transmission link from the host device to the client device is determined by the contents of the bandwidth control register.

6. The digital data transmission system of claim 1, wherein the transmission link is an MDDI link.

7. A method for adjusting the transmission rate of packets over a transmission link that couples a client device and a host device within an electronic device, comprising:

determining a change of state within the electronic device;

determining a desired transmission rate;

transmitting the desired transmission rate from the client device to the host device;

storing the transmission rate within a register in the host device;

accessing the register containing the transmission rate;

transmitting data packets over the transmission link from the host device to the client device with a transmission rate that equals the transmission rate stored in the register.

8. The method of claim 7, wherein said link is an MDDI link.

9. The method of claim 8, wherein the electronic device is a cellular telephone having a camera module.

10. The method of claim 9, wherein determining a change of state within the electronic device includes entering image preview mode, image capture mode, or hibernation mode.

11. A method for adjusting the size of packets transmitted over a transmission link that couples a client device and a host device within an electronic device, comprising:

determining a change of state within the electronic device;

determining a desired packet size;

transmitting the desired packet size from the client device to the host device;

storing the packet size within a register in the host device;

accessing the register containing the packet size;

transmitting data packets over the transmission link from the host device to the client device with a packet size that equals the packet size stored in the register.

12. The method of claim 11, wherein said link is an MDDI link.

13. The method of claim 12, wherein the electronic device is a cellular telephone having a camera module.

14. The method of claim 13, wherein determining a change of state within the electronic device includes entering image preview mode, image capture mode or hibernation mode.