Method of generating networks by utilizing multi-channel

• US 9,198,167 B2
• Filed: 07/10/2013
• Issued: 11/24/2015
• Est. Priority Date: 07/10/2012
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Jeon, Young Ae, Lee, Sangjae, Choi, Sangsung
• Primary Examiner(s): NGUYEN, MINH TRANG T
• Application Number:
  US13/938,719
• Publication Number:
  US 20140016581A1
• Time in Patent Office: 867 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method of generating networks by utilizing a multi-channel so that channels may be efficiently used, inter-channel interference may be avoided, and a network may be energy efficiently managed is provided. Through a super personal area network (PAN) coordinator that manages all networks based on a multi-channel, a PAN capable of avoiding inter-channel interference may be formed. In addition, it is possible to grasp use states of channels used for transmitting and receiving beacon frames, to observe a change in a network topology, and to form an energy efficient PAN.

Claims

1. A method of generating networks in a wireless personal area network (WPAN), comprising:

obtaining a list of available TV white space (TVWS) channels;

mapping the TVWS channels to corresponding physical (PHY) channels;

selecting one of the PHY channels;

broadcasting a first beacon frame through the selected PHY channel;

receiving a dedicated beacon slot (DBS) request frame for requesting allocation of a first channel and a first DBS from a first personal area network (PAN) coordinator among a plurality of PAN coordinators that receive the first beacon frame; and

allocating the first channel and the first DBS to a second PAN coordinator, wherein the first PAN coordinator is a TVWS multi-channel cluster tree PAN (TMCTP)-parent PAN coordinator and the second PAN coordinator is a TMCTP-child PAN coordinator.

2. The method of claim 1, further comprising:

receiving a data request frame from the second PAN coordinator; and

transmitting a DBS response frame including information on the first channel and the first DBS to the second PAN coordinator.

3. The method of claim 2, further comprising receiving a second beacon frame from the second PAN coordinator through the first channel.

4. The method of claim 1, further comprising transmitting a media access control (MAC) layer management entity (MLME)-DBS.indication primitive to a next higher layer of the first PAN coordinator by an MLME of the first PAN coordinator after receiving the DBS request frame.

5. The method of claim 1, wherein the obtaining comprises obtaining the list of available TVWS channels from geolocation database (GDB) through internet.

6. The method of claim 1, wherein the first beacon frame includes TVWS multi-channel cluster tree PAN (TMCTP) specification information entity (IE) that provides information of DBS allocation capability and channel allocation capability.

7. The method of claim 1, wherein the first beacon frame includes TVWS multi-channel cluster tree PAN (TMCTP) specification information entity (IE) that provides at least one information of TMCTP frame pending information, number of PAN IDs pending information, or PAN ID list information.

8. The method of claim 1, wherein the DBS is included in a beacon only period (BOP), and the BOP follow a contention free period in a superframe of the first PAN coordinator and the second PAN coordinator.

9. A method of generating networks in a wireless personal area network (WPAN), comprising:

receiving, at a second personal area network (PAN) coordinator, a first beacon frame broadcasted by a first PAN coordinator through a PHY channel selected by the first PAN coordinator;

transmitting, by the second PAN coordinator, a dedicate beacon slot (DBS) request frame for requesting allocation of a first channel and a first DBS to the first PAN coordinator;

transmitting, by the second PAN coordinator, a data request frame to the first PAN coordinator; and

receiving, by the second PAN coordinator, a DBS response frame including information on the first channel and the first DBS allocated to the second PAN coordinator from the first PAN coordinator, wherein the first PAN coordinator is a TMCTP-parent PAN coordinator and the second PAN coordinator is a TMCTP-child PAN coordinator.

10. The method of claim 9, further comprising transmitting a media access control (MAC) layer management entity (MLME)-BEACON-NOTIFY.indication primitive from an MLME of the second PAN coordinator to a next higher layer of the second PAN coordinator after receiving the first beacon frame.

11. The method of claim 10, further comprising analyzing the MLME-BEACON-NOTIFY.indication primitive and transmitting an MLME-DBS.request primitive from the next higher layer to the MLME.

12. The method of claim 9, further comprising analyzing the DBS response frame to confirm the information on the first channel and the first DBS, and transmitting an MLME-DBS.confirm primitive from the MLME to the next higher layer after receiving the DBS response frame.

13. The method of claim 9, further comprising broadcasting a second beacon frame through the first channel.

14. The method of claim 9, wherein the first beacon frame includes TVWS multi-channel cluster tree PAN (TMCTP) specification information entity (IE) that provides information of DBS allocation capability and channel allocation capability.

15. The method of claim 9, wherein the first beacon frame includes TVWS multi-channel cluster tree PAN (TMCTP) specification information entity (IE) that provides at least one information of TMCTP frame pending information, number of PAN IDs pending information, or PAN ID list information.

16. The method of claim 9, wherein the DBS is included in a beacon only period (BOP), and the BOP follow a contention free period in a superframe of the second PAN coordinator and the first PAN coordinator.