SYSTEM AND METHOD FOR UPLINK RESOURCE ALLOCATION IN MOBILE INTERNET

• US 20090164638A1
• Filed: 12/23/2008
• Published: 06/25/2009
• Est. Priority Date: 12/24/2007
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Lee, Kyeong Ho, Kim, Joong Bae, Jang, Choul Soo
• Application Number:
  US12/342,999
• Publication Number:
  US 20090164638A1
• Time in Patent Office: Days
• US Class Current: 709/226
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/54 based on quality criteria
• CPC Class Codes: H04W 72/56 based on priority criteria

Abstract

A system for uplink resource allocation in mobile Internet for remote-controlling robots includes a schedule policy table for storing therein priorities assigned to the robots to support required image qualities of images received from the robots and maximum allocatable uplink resource amounts for the robots; and a scheduler for allocating uplink resources to the robots based on the priorities, the maximum allocatable uplink resource amounts and required bandwidths received from the robots. Each of the robots includes a camera for taking the images; an encoder for encoding the images taken by the camera; and a mobile Internet terminal, having a transmission queue for temporarily storing therein the encoded images, for transmitting the encoded image in the transmission queue to a remote control center via the uplink resources allocated based on the required bandwidth, which is calculated based on status of the transmission queue.

Claims

1. A system for uplink resource allocation in mobile Internet for remote-controlling robots, the system comprising:

a schedule policy table for storing therein priorities assigned to the robots to support required image qualities of images received from the robots and maximum allocatable uplink resource amounts for the robots; and

a scheduler for allocating uplink resources to the robots based on the priorities, the maximum allocatable uplink resource amounts and required bandwidths received from the robots.

2. The system of claim 1, wherein the scheduler selects a connection associated with a robot to which highest priority is assigned;

obtains modulation and coding schemes for the connection;

calculates uplink resource amount to support a bandwidth for the modulation and coding schemes; and

allocates to the connection the calculated amount of the uplink resources, if the calculated uplink resource amount is equal to or less than the maximum allocatable uplink resource amount for the robot and unused amount of the uplink resources is sufficient to support the bandwidth for the modulation and coding schemes.

3. The system of claim 2, wherein the scheduler allocates to the connection the uplink resources corresponding to the maximum allocatable uplink resource amount for the robot, if the calculated uplink resource amount is greater than the maximum allocatable uplink resource amount for the robot or unused amount of the uplink resources is insufficient to support the bandwidth for the modulation and coding schemes.

4. The system of claim 1, wherein the uplink resources are resources of the mobile Internet or WiMax (Worldwide Interoperability for Microwave Access).

5. The system of claim 1, wherein each of the robots includes:

a camera for taking the images;

an encoder for encoding the images taken by the camera; and

a mobile Internet terminal, having a transmission queue for temporarily storing therein the encoded images, for transmitting the encoded image in the transmission queue to a remote control center via the uplink resources allocated based on the required bandwidth, which is calculated based on status of the transmission queue.

6. A method for uplink resource allocation in mobile Internet for remote-controlling robots, the method comprising:

storing, in a schedule policy table, priorities assigned to the robots to support required image qualities of images received from the robots and maximum allocatable uplink resource amounts for the robots;

querying the robots for required bandwidths for use in transmitting the images;

allocating uplink resources to the robots based on the priorities, the maximum allocatable uplink resource amounts and the required bandwidths received from the robots;

transmitting resource allocation result to the robots; and

displaying the images received from the robots via the allocated uplink resources.

7. The method of claim 6, wherein allocating the uplink resources includes:

selecting a connection associated with a robot to which highest priority is assigned;

obtaining modulation and coding schemes for the connection;

calculating uplink resource amount to support a bandwidth for the modulation and coding schemes; and

allocating to the connection the calculated amount of the uplink resources, if the calculated uplink resource amount is equal to or less than the maximum allocatable uplink resource amount for the robot and unused amount of the uplink resources is sufficient to support the bandwidth for the modulation and coding schemes.

8. The method of claim 7, wherein allocating the uplink resources further includes:

allocating to the connection the uplink resources corresponding to the maximum allocatable uplink resource amount for the robot, if the calculated uplink resource amount is greater than the maximum allocatable uplink resource amount for the robot or unused amount of the uplink resources is insufficient to support the bandwidth for the modulation and coding schemes.

9. The method of claim 6, wherein each of the robots maintains current image quality if amount of the allocated uplink resources corresponds to the required bandwidth and is sufficient to support required image quality.

10. The method of claim 6, wherein, each of the robots increases the required bandwidth by a specific ratio if the amount of the allocated uplink resources is insufficient to support the required image quality, and, if the amount of the allocated uplink resources is increased in response to the increased required bandwidth, each of the robots raises the current image quality.