Frame structure for bridging operation in high-speed wireless personal area network and data transmitting method thereof

• US 7,515,571 B2
• Filed: 07/15/2004
• Issued: 04/07/2009
• Est. Priority Date: 11/24/2003
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Song, Jae-Yeon, Lee, Jong-Hwa, Kim, Jin-Hee, Kwon, Seo-Won, Lee, Yoon-Sun, Lim, Se-Youn
• Primary Examiner(s): Eisen; Alexander
• Assistant Examiner(s): CAI, WAYNE HUU
• Application Number:
  US10/891,614
• Publication Number:
  US 20050113102A1
• Time in Patent Office: 1,727 Days
• Field of Search: 455/435.2, 455/434, 455/422.1, 455/454, 455 411- 413, 370/338, 370/401
• US Class Current: 370/338
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

Disclosed is a frame structure in a high-speed wireless personal area network (WPAN) and a message transmitting method thereof which enable communications among devices existing in different piconets by using a device that provides a bridging function in the IEEE 802.15.3 WPAN. In a high-speed WPAN system which includes a parent piconet having a plurality of devices and a child piconet using time slots allocated by the devices located in the parent piconet, and a bridge device located in the child piconet, that broadcasts information about the devices of the parent piconet and information about the devices of the child piconet to the devices included in the high-speed WPAN, and operates to perform a data transfer between a first specified device in the child piconet and a second specified device in the parent piconet. A specified device included in the high-speed WPAN constructs a MAC (Media Access Control) header data structure for a data transmission so that the data structure includes a source piconet identification (ID) field for indicating the piconet to which the specified device belongs, and a destination piconet ID field for indicating the destination piconet to which the destination device, to which the specified device intends to transmit data, belongs.

Claims

1. A bridging device for a bridging operation in a high-speed wireless personal area network (WPAN) system that includes a parent piconet having a plurality of devices, a child piconet using time slots allocated by the devices located in the parent piconet, said bridge device located in the child piconet broadcasts information about the devices of the parent piconet and information about the devices of the child piconet, and operates to perform a data transfer between a first specified device included in one piconet and a second specified device included in a second piconet, wherein

a specified device included in the high-speed WPAN constructs a MAC (Media Access Control) header data structure for a data transmission that includes a piconet identification field comprising a source piconet identification (ID) field for indicating the piconet to which the specified device belongs, and a destination piconet identification (ID) field for indicating the destination piconet to which the destination device, to which the specified device intends to transmit data, belongs and

said bridge device compares a value of said source and destination piconet identification fields to determine whether said data transmission remains within or is provided outside of said source piconet;

and

performs an operation that includes;

receiving data from the first specified device;

terminating a bridging operation with respect to the data if the value of the source piconet ID field is equal to the value of the destination piconet ID field;

buffering the data if the value of the source piconet ID field is different from the value of the destination piconet ID field;

receiving a time allocation message from the destination piconet, and

transmitting the buffered data at a time allocated by the time allocation message.

2. The bridge device as claimed in claim 1, wherein the bridge device operates as a piconet coordinator of the child piconet.

3. The bridge device as claimed in claim 1, wherein both the source piconet ID field and the destination piconet ID field are each composed of one byte.

4. The bridge device as claimed in claim 1, wherein information about the devices included in the high-speed WPAN system is broadcast through the bridge device, so that overlapping of device IDs among the devices is prevented.