摘要:
A system and method for medium access control in a wireless communication network including the use of packets having a header and plural data portions, acknowledgement request features, corrupt packet identification, and adaptive duty cycling.
摘要:
A system and method for medium access control in a wireless communication network including the use of packets having a header and plural data portions, acknowledgement request features, corrupt packet identification, and adaptive duty cycling.
摘要:
Directional transmission and reception in mobile wireless ad hoc networks may include a number of nodes, in which there is at least a first node and a second node. Each node is associated with a time multiplex frame structure having multiple sub-frames. The sub-frames includes at least a first sub-frame, a second sub-frame, and a third sub-frame. Each of the sub-frames includes multiple time slots. The network further includes one or more directional antennas associated with each of the nodes. The first node of the network is configured to establish communication with the second node within one or more time slots corresponding to the first sub-frame in the time multiplex structure. The first node is also configured to reserve one or more time slots for data transmission with the second node within one or more time slots corresponding to the second sub-frame in the time multiplex structure. The first node is further configured to transmit data to the second node based on the one or more reserved time slots corresponding to the third sub-frame in the time multiplex structure. Other embodiments of this aspect include corresponding techniques, apparatus, and computer program products.
摘要:
A method of digital right backuping and recovery is disclosed, including: sending by User Equipment a digital right request message which includes request information of backupable and recoverable right to a provider server; sending by the provider server a backupable and recoverable digital right which is requested by the User Equipment to the User Equipment; confirming a digital right state by the User Equipment and the provider server; and sending by the provider server a backuped or recovered digital right to the User Equipment according to the digital right state when the User Equipment requests to backup or recover the digital right.
摘要:
Directional transmission and reception in mobile wireless ad hoc networks may include a number of nodes, in which there is at least a first node and a second node. Each node is associated with a time multiplex frame structure having multiple sub-frames. The sub-frames includes at least a first sub-frame, a second sub-frame, and a third sub-frame. Each of the sub-frames includes multiple time slots. The network further includes one or more directional antennas associated with each of the nodes. The first node of the network is configured to establish communication with the second node within one or more time slots corresponding to the first sub-frame in the time multiplex structure. The first node is also configured to reserve one or more time slots for data transmission with the second node within one or more time slots corresponding to the second sub-frame in the time multiplex structure. The first node is further configured to transmit data to the second node based on the one or more reserved time slots corresponding to the third sub-frame in the time multiplex structure. Other embodiments of this aspect include corresponding techniques, apparatus, and computer program products.
摘要:
The present invention includes a system for determining cell loss among on-off sources on a network by (a) receiving cells; and (b) measuring aggregate cell loss of said sources at port level. The method preferably includes determining aggregate cell loss of the sources; determining mean rate of each of the sources; determining burstiness of each of the sources; determining average burst length of each of the sources; determining buffer size; and approximating the cell loss ratio of each of the sources based substantially only upon the aggregate cell loss, the mean rate, the burstiness, and the average burst length. This approximation can be calculated using the formula: γ i = γ ∑ i = 1 N r j ∑ i = 1 N A j r j A i where &ggr;i is individual cell loss ratio, &ggr; is aggregate cell loss ratio, rj is mean rate, and A is computed from the formula: A i = T i B i T i + B where Ti is average burst length of each of said sources, Bi is burstiness, and B is buffer size.
摘要:
Acridian monomers and polymers are described, as well as their use in organic electronic devices, and materials and methods for fabrication of the same.
摘要:
Techniques for implementing systems and methods for topology management, power control and cross-layer design in directional antenna-based wireless mobile ad hoc networks are described. A multiple access control (MAC) system for a directional antenna and time division multiple access communication (DTMAC) node includes a neighbor discovery computer process designed to identify one or more neighbor nodes. The MAC system also includes a make reservation computer process designed to identify and reserve at least one transmission time slot with at least one of the one or more identified neighbor nodes. Further, the MAC system includes a data transmission computer process designed to transmit data to the at least one of the one or more identified neighbor nodes during the at least one reserved transmission time slot.