System for setting an ad-hoc network for terminal and method of controlling the same

• US 8,194,677 B2
• Filed: 01/08/2009
• Issued: 06/05/2012
• Est. Priority Date: 01/21/2008
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Ahn, Joong-Kyu
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): Mais, Mark A
• Application Number:
  US12/350,587
• Publication Number:
  US 20090185570A1
• Time in Patent Office: 1,244 Days
• Field of Search: 370276-278, 370/310, 370/310.2, 370/311, 370/318, 370/328, 370331-348, 370/395.21, 370/476, 455/73, 455/552.1, 455/574, 455/452.2, 340/436, 340/903
• US Class Current: 370/395.21
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 40/026 Route selection considering the moving speed of individual devices
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A system and method for setting an ad-hoc network in a terminal are provided. The system includes a storage unit for storing a critical value of acceleration of the terminal, an acceleration sensor for measuring the acceleration of the terminal to provide a value of the measured acceleration, and a transmission frame processor for controlling transmission of a Media Access Control (MAC) frame for setting the network depending on whether the value of the acceleration measured by the acceleration sensor exceeds the critical value of acceleration pre-stored in the storage unit. The system performs Radio Frequency (RF) control on the terminals, each of which must operate as a host and a router in the ad-hoc network, using the acceleration sensor, thereby preventing use of unnecessary resources and reducing an amount of unnecessarily broadcast frames.

Claims

1. A system for setting an ad-hoc network in a transmitting terminal, the system comprising:

a storage unit for storing a critical value of acceleration of the terminal;

an acceleration sensor for measuring the acceleration of the terminal and for providing a value of the measured acceleration; and

a transmission frame processor for determining whether the value of the acceleration measured by the acceleration sensor exceeds a critical value of acceleration stored in the storage unit,

wherein, if it is determined that the value of the measured acceleration does not exceed the critical value of acceleration stored in the storage unit, the transmission frame processor adds the value of the measured acceleration to an acceleration information field of a Media Access Control (MAC) frame and broadcasts the MAC frame to surrounding receiving terminals, and

wherein the transmission frame processor does not broadcast any MAC frame if it is determined that the value of the acceleration measured by the acceleration sensor exceeds the critical value of acceleration stored in the storage unit.

2. The system according to claim 1, wherein the acceleration information field comprises a frame body field of the MAC frame.

3. The system according to claim 2, wherein the transmission frame processor uses one of an automatic mode for processing the MAC frame in a media access control layer and a manual mode for processing the MAC frame in a routing protocol layer.

4. A system for setting an ad-hoc network in a receiving terminal, the system comprising:

a storage unit for storing a critical value of acceleration of the terminal;

an acceleration field searcher for searching an acceleration information field of a Media Access Control (MAC) frame received from a transmitting terminal, and for determining a value of the acceleration information field of the MAC frame of the transmitting terminal;

an acceleration comparator for comparing the value of the acceleration information field searched by the acceleration field searcher with a critical value of acceleration of the receiving terminal stored in the storage unit; and

a reception frame processor for discarding the received MAC frame if the value of the acceleration information field of the MAC frame is greater than the critical value of acceleration stored in the storage unit and providing the received MAC frame to a higher layer if the value of the acceleration information field of the MAC frame is equal to or less than the critical value of acceleration stored in the storage unit.

5. The system according to claim 4, wherein the reception frame processor discards the received MAC frame using one of an automatic mode for processing the frame in a media access control layer and a manual mode for processing the frame in a routing protocol layer.

6. A method of controlling a system for setting an ad-hoc network in a transmitting terminal, the method comprising:

measuring, by an acceleration sensor, a value of acceleration of the transmitting terminal;

determining whether the value of acceleration measured by the acceleration sensor exceeds a critical value of acceleration stored in a storage unit;

adding the value of the measured acceleration to an acceleration information field of a Media Access Control (MAC) frame and broadcasting the MAC frame to surrounding terminals if it is determined that the value of the measured acceleration does not exceed the critical value of acceleration stored in the storage unit; and

not broadcasting any MAC frame if it is determined that the value of the acceleration measured by the acceleration sensor exceeds the critical value of acceleration stored in the storage unit.

7. A method of controlling a system for setting an ad-hoc network in a receiving terminal, the method comprising:

searching, by an acceleration field searcher, an acceleration information field of a Media Access Control (MAC) frame received from a transmitting terminal;

determining a value of the acceleration information field of the MAC frame of the transmitting terminal;

determining, by an acceleration comparator, whether the value of the acceleration information field searched by the acceleration field searcher is greater than a critical value of acceleration stored in a storage;

discarding, by a reception frame processor, the received MAC frame if the value of the acceleration information field of the MAC frame is greater than the critical value of acceleration stored in the storage; and

providing, by a reception frame processor, the received MAC frame to a higher layer if the value of the acceleration information field of the MAC frame is equal to or less than the critical value of acceleration stored in the storage unit.