摘要:
In a wireless communication system, a method and apparatus for controlling traffic congestion includes determining that the traffic congestion at a plurality of geographical locations in the wireless communication network is above a predetermined threshold value. At least one geographical location of the plurality of geographical location is identified, wherein the identification of the at least one geographical location is based on the determination of the traffic congestion in the plurality of geographical location. At least one network node of a plurality of network nodes located in proximity of the identified geographical location is selected and assigned a first level of priority during congestion control.
摘要:
In a wireless communication system, a method and apparatus for controlling traffic congestion includes determining that the traffic congestion at a plurality of geographical locations in the wireless communication network is above a predetermined threshold value. At least one geographical location of the plurality of geographical location is identified, wherein the identification of the at least one geographical location is based on the determination of the traffic congestion in the plurality of geographical location. At least one network node of a plurality of network nodes located in proximity of the identified geographical location is selected and assigned a first level of priority during congestion control.
摘要:
A communications platform (100) assigns communication channels (58, 78) to users based on a power level associated with the individual users. An available bandwidth for use by the communications platform (100) in segmented into a number of sub-bands using a bank of filters (54, 78). A number of independent communication channels (58, 78) are then provided within each of the sub-bands using an appropriate multiple access scheme (e.g., code division multiple access). A power range is then specified for each of the sub-bands. When a communication connection is to be established, a power level associated with the connection is determined. One or more sub-bands are then identified that have power ranges encompassing the determined power level. A channel is then assigned to the communication connection from one of the identified sub-bands.
摘要:
A communication device (102), communication node (104), and method for transmitting a message are disclosed. The method includes calculating number of frames (402) in a message to be transmitted from the communication device. The method further includes determining transmission power (404) for the message based on the number of frames. The method further includes transmitting each frame of the message (406) using the determined transmission power.
摘要:
An arrangement for providing RF coupling cancellation between an array of antennas of a missile is shown. The present invention includes positioning a dielectric material across a portion of the axis of the waveguide antennas of a missile. The dielectric material induces further coupling which is equal to and opposite in phase to coupling normally present between the receiving and transmitting antennas of an array. The two couplings are approximately 180 degrees out of phase and cancel each other. As a result, a high degree of isolation is obtained between antennas of an array. This enables the missile to detect targets with a high degree precision. Further, a radome of QFELT.RTM. material may be applied over the dielectric material to prevent the dielectric material from ablation during high velocity flight.
摘要:
A method of increasing satellite communication quality by using a MEO satellite constellation (12) and a LEO satellite constellation (14) in combination with a decision algorithm which selects the appropriate constellation to route a communication signal through. The decision algorithm can be embodied in three ways: gateway based (18), individual subscriber unit based (22) and satellite based (12, 14). The MEO constellation (12) and LEO (14) constellation may be cross-linked, allowing for switching of service between satellites, as needed, during a communication session.