IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0331477
(2002-12-31)
|
등록번호 |
US-7684785
(2010-04-21)
|
우선권정보 |
FR-02 00175(2002-01-08) |
발명자
/ 주소 |
- Le Bars, Philippe
- Thoumy, Francois
|
출원인 / 주소 |
|
대리인 / 주소 |
Fitzpatrick, Cella, Harper & Scinto
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
3 |
초록
▼
In a wireless communication network comprising at least one mobile terminal and an access point, the access point detects a beacon signal transmitted by a mobile terminal, and transmits a beacon signal in place of a given mobile terminal if it detects that the given mobile terminal transmits a beaco
In a wireless communication network comprising at least one mobile terminal and an access point, the access point detects a beacon signal transmitted by a mobile terminal, and transmits a beacon signal in place of a given mobile terminal if it detects that the given mobile terminal transmits a beacon signal. The mobile terminal, on the other hand, stops transmitting the beacon signal and receives the beacon signal transmitted by the access point.
대표청구항
▼
The invention claimed is: 1. An access point in a wireless communication network, wherein said access point is a station among a plurality of stations in said wireless communication network, and wherein said wireless communication network comprises at least one mobile terminal and wherein said acce
The invention claimed is: 1. An access point in a wireless communication network, wherein said access point is a station among a plurality of stations in said wireless communication network, and wherein said wireless communication network comprises at least one mobile terminal and wherein said access point and said mobile terminal are not initially connected with each other, said access point comprising: detecting means for detecting whether or not the mobile terminal transmits a first beacon signal consisting of network management information for allowing the access point to connect to said mobile terminal; authentication means for performing an authentication procedure with said mobile terminal if said detecting means detects that said mobile terminal transmits said first beacon signal, said authentication procedure comprising a mutual authentication process in which each of the access point and the mobile terminal authenticate the other, and upon a successful authentication, transmit a notification message indicating the same to the other; and beacon signal transmitting means for, when the detecting means detects that the mobile terminal is transmitting the first beacon signal, and where the notification message is received from the mobile terminal indicating that the access point has been successfully authenticated by the mobile terminal, transmitting a second beacon signal in place of said first beacon signal of said mobile terminal in the communication network, the mobile terminal having stopped transmitting the first beacon signal in the communication network upon receiving the notification message transmitted by the access point indicating that the mobile terminal has been authenticated by the access point and after having transmitting the notification message to the access point indicating that the access point has been authenticated by the mobile terminal, wherein said second beacon signal consists of network management information for allowing the mobile terminal to connect to said access point, wherein said access point does not transmit the second beacon signal unless the detecting means detects that the mobile terminal is transmitting the first beacon signal in said network, and wherein, when the authentication procedure results in an unsuccessful authentication of the mobile terminal, or when the access point does not receive the notification message from the mobile terminal, the access point remains silent and does not transmit the second beacon signal. 2. An access point according to claim 1, wherein a first authentication procedure performed by the access point as its part of the mutual authentication process comprises: sending a random number to said mobile terminal; performing a predetermined calculation based on said random number, so as to obtain a first result; receiving, from said mobile terminal, a second result of another predetermined calculation performed by said mobile terminal based on said random number; comparing the first result and the second result; and authenticating said mobile terminal if said first result and said second result are identical. 3. A mobile terminal in a wireless communication network, wherein said mobile terminal is a station among a plurality of stations in said wireless communication network, and wherein said wireless communication network comprises at least one access point and wherein said access point and said mobile terminal are not initially connected with each other, said mobile terminal comprising: detecting means for detecting whether or not a beacon signal is currently being transmitted in the wireless network by the access point; beacon signal transmitting means for, when the detecting means detects that the access point is not transmitting a beacon signal in the wireless communication network, transmitting a first beacon signal consisting of network management information for allowing the access point to connect to said mobile terminal; authentication means for, when the beacon signal transmitting means is transmitting the beacon signal and the access point detects the beacon signal transmitted by the beacon signal transmitting means, performing an authentication procedure with said access point, the authentication procedure comprising a mutual authentication process in which each of the mobile terminal and the access point authenticate the other, and upon a successful authentication, transmit a notification message indicating the same to the other; stopping means for, when the authentication procedure performed by the authentication means successfully authenticates the access point and where the notification message indicating that the mobile terminal has been successfully authenticated is received from the access point, stopping the transmission of said first beacon signal by said beacon signal transmitting means and transferring responsibility for beacon signal transmission to the access point; and receiving means for, after responsibility for the beacon signal transmission is transferred to the access point, receiving a second beacon signal from the access point, wherein said second beacon signal consists of network management information for allowing the mobile terminal to connect to said access point. 4. A mobile terminal according to claim 3, wherein said authentication procedure comprises: sending a random number to said access point; performing a predetermined calculation based on said random number, so as to obtain a second result; receiving, from said access point, a first result of another predetermined calculation performed by said access point based on said random number; and comparing said first result and said second result, authenticating said access point if said first result and said second result are identical.
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