摘要:
Disclosed are methods and apparatus for displaying multimedia feeds. The method comprises receiving a plurality of multimedia feeds and, for each of the plurality of multimedia feeds, acquiring a value of a metric and displaying, on a common display, the plurality of multimedia feeds. The metric is variable and its value for a particular multimedia feed and for a particular time is dependent upon either events occurring within that particular multimedia feed at or before that particular time or upon a rating (by one or more entities), at that particular time, of that particular multimedia feed. The multimedia feeds are displayed on the common display such that a first feed is displayed in a manner different from the manner of display of a second feed, the first feed having a first metric value, the second feed having a second metric value, and the first and second metric values being different.
摘要:
A method (1000) and apparatus (110) determine a multimedia representation for a multimedia asset. The method includes receiving (1020) a multimedia asset request for a multimedia asset at a multimedia representation broker (110). The multimedia asset request is received from a specific client device (120). The multimedia asset request includes client device information about the specific client device (120). The method determines (1030), at the multimedia representation broker (110), a multimedia representation for use in providing the multimedia asset to the specific client device (120) based on the client device information and based on media representations appropriate for a client device context of the specific client device (120). The method outputs (1040) multimedia representation information corresponding to the multimedia asset for the specific client device (120) based on the determined multimedia representation.
摘要:
A method (1000) and apparatus (110) determine a multimedia representation for a multimedia asset. The method includes receiving (1020) a multimedia asset request for a multimedia asset at a multimedia representation broker (110). The multimedia asset request is received from a specific client device (120). The multimedia asset request includes client device information about the specific client device (120). The method determines (1030), at the multimedia representation broker (110), a multimedia representation for use in providing the multimedia asset to the specific client device (120) based on the client device information and based on media representations appropriate for a client device context of the specific client device (120). The method outputs (1040) multimedia representation information corresponding to the multimedia asset for the specific client device (120) based on the determined multimedia representation.
摘要:
A mesh station applying for access to a network includes a list of peer stations in messages of an authenticated key establishment protocol. A mesh key distributor derives a key delivery key and generates a top level key, and then delivers the top level key to the mesh station. Following the key establishment protocol, the mesh key distributor also creates pairwise keys for use between the mesh station and the peer stations listed in its peer list. The list of peers permits the identifier for the peer to be bound into the derived key, which helps ensure that the key used between each pair of peers is unique. Once the mesh key distributor finishes creating a key for one of the stations on the peer list, the mesh key distributor sends a message to the peer to initiate a key push.
摘要:
A method and apparatus for establishing security associations between nodes of an ad hoc wireless network includes two authentication steps: an initial first contact step (authentication, authorization, and accounting (AAA)-based authentication), and a “light-weight” step that reuses key material generated during first contact. A mesh authenticator within the network provides two roles. The first role is to implement an 802.1X port access entity (PAE), derive transient keys used for encryption with a supplicant mesh point via a four-way handshake and take care of back end communications with a key distributor. The second role is as a key distributor that implements a AAA-client and derives keys used to authenticate a mesh point during first contact or fast security association. The key distributor and the on-line authentication server can communicate to one another without these messages being transported over mesh links.
摘要:
A method and system for secure processing of authentication key material in an ad hoc wireless network enables secure distribution of the authentication key material between a mesh authenticator (110) and a mesh key distributor (115), which may be separated by multiple wireless links. The method includes deriving a pairwise transient key for key distribution (PTK-KD) using a mesh key holder security information element (MKHSIE). A mesh authenticator pairwise master key (PMK-MA) is then requested using a first mesh encrypted key information element (MEKIE) that includes data origin information. Using the pairwise transient key for key distribution (PTK-KD), a second mesh encrypted key information element (MEKIE) is then decrypted to obtain the mesh authenticator pairwise master key (PMK-MA).
摘要:
A wireless local area network system (100) supporting mobile radio telephony reduces the time to complete an authenticated handover from one access point (104) to another (108) by a mobile station (102) by performing some of the steps normally performed upon leaving one access point while still associated with that access point. More particularly, the mobile station causes a cryptographic key (204) to be preestablished (212) for use when handing over to a new access point. The cryptographic key is derived at the mobile station, and is also derived in the WLAN infrastructure and stored until the mobile station initiates a handover.
摘要:
A method and apparatus for establishing security associations between nodes of an ad hoc wireless network includes two authentication steps: an initial first contact step (authentication, authorization, and accounting (AAA)-based authentication), and a “light-weight” step that reuses key material generated during first contact. A mesh authenticator within the network provides two roles. The first role is to implement an 802.1X port access entity (PAE), derive transient keys used for encryption with a supplicant mesh point via a four-way handshake and take care of back end communications with a key distributor. The second role is as a key distributor that implements a AAA-client and derives keys used to authenticate a mesh point during first contact or fast security association. The key distributor and the on-line authentication server can communicate to one another without these messages being transported over mesh links.
摘要:
The disclosure relates to techniques and technologies for efficiently transporting management information between mesh nodes across multiple hops or “mesh links” in a multi-hop mesh network. These techniques and technologies are general purpose and provide an extensible mechanism for transporting management traffic across a mesh network. These techniques and technologies can be applied in a number of applications relating, for example, to security, routing, radio measurements, mesh node management, etc.
摘要:
The disclosure relates to techniques and technologies for establishing a secure link between a mesh authenticator and a mesh key distributor for transporting security association messages. The secure link can allow the mesh key distributor to communicate results of an authentication process to the mesh authenticator.