KR101590348B1 - System and method for network synchronization - Google Patents

System and method for network synchronization Download PDF

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Publication number
KR101590348B1
KR101590348B1 KR1020090053906A KR20090053906A KR101590348B1 KR 101590348 B1 KR101590348 B1 KR 101590348B1 KR 1020090053906 A KR1020090053906 A KR 1020090053906A KR 20090053906 A KR20090053906 A KR 20090053906A KR 101590348 B1 KR101590348 B1 KR 101590348B1
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South Korea
Prior art keywords
network
channel
service
beacon
master
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KR1020090053906A
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Korean (ko)
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KR20100135499A (en
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임철호
김문기
노재연
유재황
최근환
한경식
김민석
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에스케이텔레콤 주식회사
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks

Abstract

The present invention discloses a network synchronization system and a method thereof. That is, in the coordinator apparatus constituting the beacon network, a master beacon including network access information and service channel information is transmitted through a master channel, which is a predetermined transport channel, separately from an existing service channel to induce connection of the network terminal apparatus Accordingly, it is possible to shorten the time required for fast network connection and service retrieval compared to the case in which the existing 16 channels must be searched to access the network.
Beacon, master channel, service channel

Description

[0001] SYSTEM AND METHOD FOR NETWORK SYNCHRONIZATION [0002]

The present invention relates to a network synchronization method, and more particularly, to a network synchronization method in which a master beacon including network access information and service channel information is transmitted via a master channel, which is a predetermined transmission channel, To a network synchronization system and method thereof.

In order to transmit data from a conventional beacon-type Personal Area Network (PAN) to a coordinator, a device must first receive a network beacon. As such, when a beacon is received, the device synchronizes with the superframe structure and transmits the data frame to the coordinator at an appropriate time.

In this regard, the coordinator that initially generates the PAN in the 2.4 GHz band constructs the PAN by initially selecting the frequency channel that the other PANs do not use among the 16 frequency channels in order to prevent data collision.

Accordingly, in the beacon-type PAN network, the device must check the frequency channel occupancy state by scanning the above-mentioned 16 frequency channels to access the PAN network. The scan time varies depending on the beacon transmission period and how many times the beacon is transmitted through the channel.

However, in the case of the conventional technology, it is necessary to scan a maximum of 16 frequency channels in order to connect a device to a beacon-type PAN network. In order to scan all the 16 frequency channels, It is inevitable.

The present invention has been made to solve the problems inherent in the prior art as described above, and it is an object of the present invention to provide a coordinator apparatus, which constitutes a beacon network, And transmitting the master beacon including the network access information and the service channel information to the network terminal apparatus and guiding the connection of the network terminal apparatus.

According to an aspect of the present invention, there is provided a network synchronization system, comprising: a network access information extraction unit for extracting network access information through a search for a predetermined transport channel according to a beacon network entry, A network terminal apparatus for receiving a specific service by performing synchronization of a superframe structure based on information; And a coordinator device for wirelessly transmitting a beacon including the network connection information through a different transmission channel including the predetermined transmission channel to induce a connection to the network terminal device that has entered the network and provide the specific service .

Preferably, the coordinator device transmits a master beacon including network connection information and service channel information through the predetermined transmission channel, which is the master channel, and transmits an arbitrary transmission channel existing on the network to a service channel And transmits a service beacon including the superframe configuration information.

Preferably, the network terminal apparatus accesses the network on the basis of the network connection information, moves to the service channel based on the service channel information included in the master beacon, and transmits a super frame And receives the specific service through the configuration information.

According to another aspect of the present invention, there is provided a network terminal apparatus for performing synchronization through interlocking with a coordinator apparatus constituting a beacon network, the apparatus comprising: a navigation unit for searching for a master channel To extract a master beacon; A network interworking unit for initially accessing the network based on network access information included in the extracted master beacon and performing a mobile access to a service channel that is a transport channel having interference less than a set value based on service channel information included in the master beacon; And a service processor for performing synchronization of a superframe structure through analysis of service beacons including superframe configuration information received through the service channel and receiving a specific service provided from the coordinator device .

According to another aspect of the present invention, there is provided a coordinator apparatus constituting a beacon network, comprising: a channel search unit searching for one or more transmission channels having interference less than a set value among transmission channels existing on the network; And a terminal interworking unit transmitting a service beacon by selecting any of the searched transmission channels as a service channel and transmitting a master beacon including network connection information and service channel information through a master channel which is a predetermined transmission channel .

Preferably, the terminal interworking unit induces an initial network connection to the network terminal device based on the network connection information included in the master beacon.

According to another aspect of the present invention, there is provided a network synchronization method, comprising: a coordinator selecting a specific transport channel having interference below a set value among transmission channels existing on a beacon network as a service channel, A service beacon transmission step of transmitting a service beacon including configuration information; A master beacon transmission step of the coordinator device sending a master beacon by designating a predetermined transmission channel as a master channel; And a synchronization performing step of extracting network connection information through searching for the master channel and performing synchronization of a superframe structure based on the extracted network connection information to receive a specific service .

Advantageously, the master beacon transmitting step induces an initial connection of the network terminal apparatus that has entered the network based on the network connection information included in the master beacon.

Preferably, the master beacon dispatch step induces a mobile access to the service channel for the network terminal device based on the service channel information included in the master beacon.

Preferably, the synchronizing step includes an initial access step of initially accessing the network based on the network connection information included in the master beacon; A mobile access step of accessing the service channel based on the service channel information included in the master beacon; And a service receiving step of receiving the specific service through the super frame configuration information included in the service beacon.

According to the network synchronization system and method of the present invention, a master beacon including network access information and service channel information is transmitted through a master channel, which is a predetermined transport channel, separately from an existing service channel in a coordinator apparatus constituting a network Thereby shortening the time required for quick network connection and service retrieval, thereby reducing the power consumption of the network terminal apparatus that enters the network.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 shows a schematic block diagram of a network synchronization system according to an embodiment of the present invention.

As shown in FIG. 1, the system includes a network terminal apparatus 100 that performs synchronization for receiving a specific service based on a beacon signal received through a transmission channel in accordance with a beacon network entry; And a coordinator device (200) for forming a beacon network and for transmitting a master beacon and a service beacon separately through different transmission channels on the network, thereby guiding connection to the network terminal device (100) .

The network terminal apparatus 100 performs a search for a master channel, which is a predetermined transmission channel, in accordance with the beacon network entry, extracts a master beacon, and connects to the network based on the extracted master beacon. More specifically, the network terminal apparatus 100 initially connects to the network based on the network connection information included in the extracted master beacon.

In addition, after the initial connection to the network, the network terminal device 100 moves to a service channel that is a transport channel having interference less than a set value based on the service channel information included in the master beacon.

Through this, the network terminal apparatus 100 performs synchronization of the superframe structure through analysis of service beacons including superframe configuration information received through the service channel, and transmits the superframe configuration information to the coordinator apparatus 200 Receive a specific service.

The coordinator apparatus 200 wirelessly transmits a beacon including network connection information through a different transport channel including a master channel and a service channel to induce a connection to the network terminal apparatus 100 entering the network, Service. More specifically, the coordinator apparatus 200 searches for one or more transmission channels having interference less than a set value among the transmission channels existing on the network, selects an arbitrary transmission channel among the searched transmission channels as an existing service channel Service Beacon is transmitted. At this time, the service beacon transmitted through the service channel includes super frame configuration information for providing a specific service.

In addition, the coordinator apparatus 200 transmits a master beacon including network access information and service channel information through a master channel, which is a predetermined transport channel, separately from the service channel.

The coordinator apparatus 200 induces an initial network connection to the network terminal apparatus 100 based on the network connection information included in the master beacon and also transmits the initial network connection to the network based on the service channel information included in the master beacon. And provides a service beacon by inducing a mobile access to the service channel to the initially connected network terminal apparatus 100. [

Hereinafter, a more specific configuration of the network terminal apparatus 100 according to the embodiment of the present invention will be described with reference to FIG.

That is, the network terminal apparatus 100 includes a channel detection unit 110 for extracting a master beacon, a network interworking unit 120 for performing a mobile connection to a service channel, and a super frame structure synchronization unit 110, And a service processing unit 130 for receiving the service request.

The channel detector 110 searches for a master channel, which is a predetermined transport channel, according to network entry, and extracts a master beacon including network access information and service channel information.

The network interworking unit 120 initially accesses the network based on the network connection information included in the extracted master beacon, and transmits a service, which is a transmission channel having interference less than the set value based on the service channel information included in the master beacon, Channel.

The service processor 130 analyzes the service beacon including the superframe configuration information received from the coordinator apparatus 200 through the service channel to synchronize the superframe structure, And the like.

Hereinafter, a more specific configuration of the coordinator apparatus 300 according to the embodiment of the present invention will be described with reference to FIG.

That is, the coordinator device 200 includes a channel search unit 210 for searching for a transmission channel for transmitting a service beacon, and a beacon including network access information through a different transmission channel including the master channel and the service channel. And a terminal interlocking unit 220 for interfacing with the terminal.

The channel searching unit 210 searches for one or more transmission channels having interference less than a set value among transmission channels existing on the network.

Based on this, the terminal interworking unit 220 selects an arbitrary transport channel among the transport channels searched through the channel searching unit 210 as an existing service channel, and transmits the service beacon. At this time, the service beacon transmitted through the service channel includes super frame configuration information for providing a specific service.

In addition, the terminal interworking unit 220 transmits a master beacon including network access information and service channel information through a master channel, which is a predetermined transport channel, separately from the service channel.

In this way, the terminal interworking unit 220 induces an initial network connection to the network terminal apparatus 100 based on the network connection information included in the master beacon, And provides a service beacon by inducing a mobile access to the service channel to the network terminal apparatus 100 initially connected to the network terminal apparatus 100.

As described above, according to the network synchronization system of the present invention, in the coordinator device 200, network access information and service channel information are transmitted through a master channel, which is a predetermined transport channel, The master beacon is transmitted to induce the connection of the network terminal apparatus 100, so that it is necessary to search the existing 16 channels to connect to the network, The power consumption can be reduced.

Hereinafter, a network synchronization method according to an embodiment of the present invention will be described with reference to FIGS. Here, for convenience of explanation, the configurations shown in FIGS. 1 to 3 will be described with reference to corresponding reference numerals.

First, a method of driving a network synchronization system according to an embodiment of the present invention will be described with reference to FIG.

First, the coordinator apparatus 200 transmits a service beacon by selecting a specific transmission channel having interference less than a set value among transmission channels existing on the beacon network as a service channel (S110 - S130). Preferably, the coordinator device 200 searches for one or more transport channels having interference less than a predetermined value among the transport channels existing on the network, selects an arbitrary transport channel among the searched transport channels as an existing service channel Service Beacon is transmitted. At this time, the service beacon transmitted through the service channel includes super frame configuration information for providing a specific service.

Then, the coordinator apparatus 200 designates a predetermined transmission channel as a master channel and transmits a master beacon (S140). Preferably, the coordinator device 200 transmits a master beacon including network access information and service channel information through a master channel, which is a predetermined transport channel, separately from the service channel.

Then, the network terminal apparatus 100 performs a search for a master channel, which is a predetermined transmission channel according to the beacon network entry, to extract a master beacon, and accesses the network based on the extracted master beacon (S150 - S180) . Preferably, the network terminal apparatus 100 makes initial connection to the network based on the network connection information included in the extracted master beacon. In addition, after the initial connection to the network, the network terminal device 100 moves to a service channel that is a transport channel having interference less than a set value based on the service channel information included in the master beacon.

Thereafter, the network terminal apparatus 100 receives the specific service provided from the coordinator apparatus 200 through analysis of the service beacon received through the service channel (S 190 - S 200). Preferably, the network terminal apparatus 100 performs synchronization of the superframe structure through analysis of service beacons including superframe configuration information received via the service channel, thereby providing the coordination information from the coordinator apparatus 200 Lt; / RTI >

Hereinafter, more specific operations of the network terminal apparatus 100 will be described with reference to FIG.

First, a master beacon is searched for a master channel, which is a preset transmission channel, according to network entry (S210 - S230). Preferably, the channel detector 110 searches for a master channel, which is a predetermined transport channel, according to network entry, and extracts a master beacon including network access information and service channel information.

Then, the master beacon is connected to the network based on the extracted master beacon (S240 - S250). Preferably, the network interworking unit 120 initially accesses the network based on the network connection information included in the extracted master beacon, and transmits a transmission having interference less than the set value based on the service channel information included in the master beacon after the network initial connection To the service channel.

Thereafter, the specific service provided from the coordinator apparatus 200 is analyzed through analysis of the service beacon received through the service channel (S260 - S270). Preferably, the service processing unit 130 performs synchronization of the superframe structure through analysis of service beacons including superframe configuration information received from the coordinator apparatus 200 through the service channel, (200).

Hereinafter, more specific operation of the coordinator apparatus 200 will be described with reference to FIG.

First, a transmission channel for transmitting a service beacon is searched (S310 - S320). Preferably, the channel search unit 210 searches for one or more transmission channels having interference below the set value among the transmission channels existing on the network.

In step S330, a service beacon is transmitted by selecting an arbitrary transport channel among the searched transport channels as an existing service channel. Preferably, the terminal interlocking unit 220 selects a transport channel among the transport channels retrieved through the channel search unit 210 as an existing service channel and provides a service including super frame configuration information for providing a specific service Beacon is transmitted.

Then, the master beacon is transmitted through the master channel, which is a preset transmission channel (S350). Preferably, the terminal interworking unit 220 transmits a master beacon including network connection information and service channel information through a master channel, which is a predetermined transport channel, separately from the service channel. In this way, the terminal interworking unit 220 induces an initial network connection to the network terminal apparatus 100 based on the network connection information included in the master beacon, And provides a service beacon by inducing a mobile access to the service channel to the network terminal apparatus 100 initially connected to the network terminal apparatus 100.

As described above, according to the network synchronization method of the present invention, in the coordinator device 200, network access information and service channel information are transmitted through a master channel, which is a predetermined transport channel, The network terminal apparatus 100 can transmit the master beacon and induce the connection of the network terminal apparatus 100 so that the network terminal apparatus 100 can access the network by searching for the existing 16 channels, Can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

According to the network synchronization system and method of the present invention, in a coordinator apparatus constituting a beacon network, a master, which includes network access information and service channel information through a master channel, which is a predetermined transport channel, The beacon is transmitted to induce the connection of the network terminal device, thereby shortening the time required for fast network connection and service retrieval. Therefore, the present invention is not limited to the use of related technologies, Is not only sufficient but also practically usable because it can be practically carried out clearly.

1 is a schematic configuration diagram of a network synchronization system according to an embodiment of the present invention;

2 is a schematic configuration diagram of a network terminal apparatus according to an embodiment of the present invention;

3 is a schematic configuration diagram of a coordinator apparatus according to an embodiment of the present invention;

4 to 6 are flowcharts for explaining a network synchronization method according to an embodiment of the present invention.

Description of the Related Art

100: Network terminal device

110: channel detection unit 120: network interlocking unit

130:

200: Coordinator device

210: channel search unit 220: terminal interlocking unit

Claims (10)

  1. delete
  2. delete
  3. delete
  4. A network terminal apparatus interworking with a coordinator apparatus constituting a network,
    A channel detector for detecting a master beacon by searching for a master channel which is a preset transmission channel according to the network entry;
    A network interworking unit for initially accessing the network based on network connection information included in the master beacon and performing a mobile access to a service channel that is a transport channel having interference less than a set value based on service channel information included in the master beacon; And
    And a service processor for receiving a specific service provided from the coordinator device through analysis of a service beacon received through the service channel.
  5. A coordinator apparatus for configuring a network,
    A channel searching unit for searching at least one transmission channel having interference less than a set value among transmission channels existing in the network; And
    Transmitting a master beacon including network access information and service channel information through a master channel, which is a predetermined transmission channel, and transmitting the master beacon to the master beacon, And a terminal interworking unit for initially connecting to the network based on the network connection information and allowing the receiving network terminal apparatus to perform a mobile access to a service channel based on the service channel information included in the master beacon.
  6. delete
  7. A service beacon transmitting step of transmitting a service beacon by selecting a specific transport channel having a set value lower than a set value among transmission channels existing in a network as a service channel; And
    Wherein the coordinator apparatus transmits a master beacon including network connection information and service channel information by designating a predetermined transport channel as a master channel, and the network terminal apparatus receiving the master beacon transmits an initial And transmitting a master beacon to a service channel based on the service channel information included in the master beacon.
  8. delete
  9. delete
  10. Extracting a master beacon by performing a search for a master channel, which is a predetermined transmission channel according to the network entry, by a network terminal apparatus interworking with a coordinator apparatus constituting a network;
    The network terminal apparatus initially accesses the network on the basis of the network access information included in the master beacon and performs a mobile access to a service channel which is a transport channel having interference less than a set value based on service channel information included in the master beacon ; And
    And receiving a specific service provided from the coordinator device through analysis of a service beacon received through the service channel.
KR1020090053906A 2009-06-17 2009-06-17 System and method for network synchronization KR101590348B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008070068A2 (en) 2006-12-04 2008-06-12 Interdigital Technology Corporation Method and apparatus of enabling multi band transmission

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008070068A2 (en) 2006-12-04 2008-06-12 Interdigital Technology Corporation Method and apparatus of enabling multi band transmission

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