Supporting emergency calls on a wireless local area network
First Claim
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1. A method for use in an access point (AP), the method comprising:
- transmitting a first beacon frame that contains a first basic service set identity (BSSID) to a station (STA), wherein the first BSSID is associated with a security credential required for associating with the first BSSID;
transmitting a second beacon frame that contains a second BSSID to the STA, wherein the second BSSID is associated with an emergency call security credential for associating with the second BSSID;
receiving an association message that includes a BSSID from the STA;
determining whether the received association message includes the second BSSID; and
granting the STA access to the AP on a condition that the received association message includes the second BSSID, wherein the access to the AP is limited to an emergency call to an emergency call center.
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Abstract
Several methods are provided for communicating emergency call capability information between a station and an access point (AP) in a wireless local area network. The methods include advertising by the AP of its emergency call capabilities and announcing by the station of its emergency call capabilities. The AP can advertise its emergency call capabilities in a beacon frame, a probe response frame, a reassociation response frame, or a reauthentication response frame. The station can announce its emergency call capabilities in an association request frame, a reassociation request frame, an authentication request frame, or a reauthentication request frame.
159 Citations
19 Claims
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1. A method for use in an access point (AP), the method comprising:
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transmitting a first beacon frame that contains a first basic service set identity (BSSID) to a station (STA), wherein the first BSSID is associated with a security credential required for associating with the first BSSID; transmitting a second beacon frame that contains a second BSSID to the STA, wherein the second BSSID is associated with an emergency call security credential for associating with the second BSSID; receiving an association message that includes a BSSID from the STA; determining whether the received association message includes the second BSSID; and granting the STA access to the AP on a condition that the received association message includes the second BSSID, wherein the access to the AP is limited to an emergency call to an emergency call center. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for use in an access point (AP), the method comprising:
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generating an emergency basic service set identity (BSSID) for an emergency call to an emergency call center, wherein the emergency BSSID is associated with an emergency call security credential; transmitting a plurality of basic service set identities (BSSIDs), wherein at least one of the plurality of BSSIDs is the emergency BSSID; receiving an access request indicating the emergency BSSID from a station (STA); and granting emergency call access to the STA. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for use in a station (STA), the method comprising:
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receiving a first beacon frame that contains a first basic service set identity (BSSID) from an access point (AP), wherein the first BSSID is associated with a security credential required for associating with the first BSSID; receiving a second beacon frame that contains a second BSSID from the AP, wherein the second BSSID is associated with an emergency call security credential for associating with the second BSSID; transmitting an association message that includes a BSSID; and receiving access to the AP, wherein the access is limited to an emergency call to an emergency call center. - View Dependent Claims (16, 17)
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18. An access point (AP) comprising:
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a transmitter configured to transmit a first beacon frame that contains a first basic service set identity (BSSID) to a station (STA), wherein the first BSSID is associated with a security credential required for associating with the first BSSID and transmit a second beacon frame that contains a second BSSID to the STA, wherein the second BSSID is associated with an emergency call security credential for associating with the second BSSID; a receiver configured to receive an association message that includes a BSSID from the STA; and a processor configured to determine whether the received association message includes the second BSSID, and grant the STA access to the AP on a condition that the received association message includes the second BSSID, wherein the access to the AP is limited to an emergency call to an emergency call center.
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19. A station (STA) comprising:
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a receiver configured to receive a first beacon frame that contains a first basic service set identity (BSSID) from an access point (AP), wherein the first BSSID is associated with a security credential required for associating with the first BSSID and receive a second beacon frame that contains a second BSSID from the AP, wherein the second BSSID is associated with an emergency call security credential for associating with the second BSSID; and a transmitter configured to transmit an association message that includes a BSSID; wherein the receiver is configured to receive access to the AP, wherein the access is limited to an emergency call to an emergency call center.
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Specification