Abstract: A method for establishing an encrypted communication channel is described. Query IDs are generated at a first device. Each query ID identifies a keyword in a set of keywords. Query IDs are received, at a second device. A second set of keywords is determined by the second device based on the query IDs. Match IDs are determined based on the second set. Each match ID identifies a keyword in the second set. An encryption key is generated based on the second set. A response is sent which includes the match IDs and an encrypted message. At the first device, the second set is determined based on the match IDs. The second set includes keywords of the first set of keywords identified by the match IDs. The encryption key is generated at the first device and the encrypted message is decrypted. Apparatus and computer readable media are also described.

Abstract: Systems and techniques for key management in mobile ad hoc networks are described. Pseudonyms are defined for group members of mobile ad hoc networks such that a pseudonym in a message can be deterministically identified with the sending device only by the sending device and the message recipient. Key management for a group is performed by a group manager, and key management may include key renewal and revocation. Key renewal is performed by a group manager, with the group manager using a set of couple pseudonyms, including a couple pseudonym between the manger and each group member. Key renewal employs a renewal key used to encrypt the updated group key, and the group manager updates the group key be transmitting a message to each group member in proximity, with the message being identified using the couple pseudonym of the manager and the group member.

Abstract: An approach is provided for group formation based on a synchronized response mechanism. A group platform may determine a request to form at least one group of one or more devices. Then, the group platform may cause, at least in part, a transmission of at least one challenge signal to the one or more devices, wherein the at least one challenge signal includes, at least in part, at least one audio signal, at least one visual signal, or a combination thereof, and wherein the transmission specifies at least one synchronized response time. Then, the group platform causes, at least in part, a formation of the at least one group comprising the one or more devices that provide at least one response signal in reply to the at least one audio signal, the at least one visual signal, or a combination thereof at least substantially currently with the at least one synchronized response time.

Abstract: A system for facilitating communal apparatus interaction. In accordance with at least one embodiment of the present invention, an apparatus configured to communicate on a wireless channel may receive first information pertaining to wireless traffic expected from other networks also utilizing the wireless channel. The apparatus may then determine whether the received information satisfies a first criterion, and if it is determined that the first information satisfies the first criterion, the apparatus may shorten an awake window duration for communicating on the wireless channel. Alternatively, if it is determined that the information does not satisfy the first criterion, the apparatus may proceed to further determine whether second information pertaining to wireless traffic on the wireless channel that is expected from a network satisfies a second criterion. If it is determined that the second information satisfies the second criterion, the apparatus may proceed to lengthen the awake window duration.

Abstract: Method, apparatus, and computer program product example embodiments enable contention for access to a wireless communications medium. In example embodiments, a method comprises initiating a channel access procedure by an apparatus; performing, by the apparatus, in response to the channel access procedure initiation, a random draw for permission to start contention with other member apparatuses of a group in which the apparatus belongs, the random draw being based on how many member apparatuses of the group are expected to compete for the wireless communications medium; and starting, by the apparatus, contention for access to the wireless communications medium, if the apparatus wins the random draw.

Abstract: Systems and techniques for key management in mobile ad hoc networks are described. Pseudonyms are defined for group members of mobile ad hoc networks such that a pseudonym in a message can be deterministically identified with the sending device only by the sending device and the message recipient. Key management for a group is performed by a group manager, and key management may include key renewal and revocation. Key renewal is performed by a group manager, with the group manager using a set of couple pseudonyms, including a couple pseudonym between the manger and each group member. Key renewal employs a renewal key used to encrypt the updated group key, and the group manager updates the group key be transmitting a message to each group member in proximity, with the message being identified using the couple pseudonym of the manager and the group member.

Abstract: A system for facilitating communal apparatus interaction. In accordance with at least one embodiment of the present invention, an apparatus configured to communicate on a wireless channel may receive first information pertaining to wireless traffic expected from other networks also utilizing the wireless channel. The apparatus may then determine whether the received information satisfies a first criterion, and if it is determined that the first information satisfies the first criterion, the apparatus may shorten an awake window duration for communicating on the wireless channel. Alternatively, if it is determined that the information does not satisfy the first criterion, the apparatus may proceed to further determine whether second information pertaining to wireless traffic on the wireless channel that is expected from a network satisfies a second criterion. If it is determined that the second information satisfies the second criterion, the apparatus may proceed to lengthen the awake window duration.

Abstract: The invention relates to the design of power sequences for use in a group of sub-areas of a wireless communication system. Each power sequence defines for one of the sub-areas transmission power values for transmissions using a respective one of a plurality of medium access units. For each of the sub-areas of the group, reception quality values are determined for transmissions between an access station serving the sub-area and mobile stations located at an edge of the sub-area. The reception quality values allow meeting system. The reception quality values are then converted for each of the sub-areas into transmission power values of a power sequence.