摘要:
A method and apparatus for performing adaptive null steering in a slow frequency hopping environment. Where base stations have smart beamforming antenna capability and are interconnected by a base station controller, thus accommodating cyclic and pseudo-random frequency hopping, each base station forwards information on arrival time, frequency and received power of all subscriber communications and co-channel interferers to the controller for correlation. Periodicity information relating to co-channel interferers is returned to the applicable base station, to enable the generation of a null in the direction of arrival of the interferer. Where few base stations have smart beamforming capability, frequency hopping is cyclic only, and each base station generates its own periodicity information. Base stations may also calculate direction of arrival and time of arrival information, and forward this to the controller, if applicable. The invention enhances network capabilities including a subscriber localizing capability hitherto unavailable to network operators.
摘要:
An embodiment of the invention relates to a method of modifying communication parameters of a wireless network, the wireless network having at least two antennas, and each of the antennas providing coverage to at least one sector. The method including obtaining measurement data for at least two sectors of the wireless network, determining, from the obtained measurement data, if a signal strength indicator of one or more sectors of the at least two sectors is at or below a target value, determining, if the one or more sectors is at or below the target value, a communication parameter to be applied to the wireless network such that the signal strength indicator of the one or more sectors is above the target value, and modifying the communication parameters of the wireless network such that the determined communication parameter is applied to the wireless network.
摘要:
Optimizing a plurality cell sites or sectors in a wireless netwrok including receiving network data regarding a plurality of cell sites or sectors; determining a critical zone in which communication is degraded; determining best neighbor cell sites or sectors among the neighbor cell sites or sectors associated with the critical cell sites or sectors; determining if the critical cell sites or sectors in the critical zone have available resources for achieving a desired improvement in communications; determining if the best neighbor cell sites or sectors have available resources for achieving the desired improvement in communications; and altering wireless network parameters of the critical cell sites or sectors, or the best neighbor cells sites or sectors for achieving the desired improvment in communications.
摘要:
A method and apparatus are provided that allows system calibration to be incorporated into a single function that also derives transmit parameters from receive parameters in a spatial diversity system. In one embodiment, the invention includes receiving signals at an antenna array from a plurality of different locations, deriving characterizations of the spatial parameters of the received signals, receiving measurements of a plurality of different signals transmitted from the antenna array to a plurality of different locations, deriving characterizations of the spatial parameters of the transmitted signals from the received measurements, and generating a transformation function for producing transmit spatial parameters based on measurements of received signals using the receive spatial parameter characterizations and the transmit spatial parameter characterizations.
摘要:
There is described herein a low profile dipole antenna element. A pair of these elements can be arranged in a crossed manner to provide two orthogonal polarized radiators. The antenna element may be combined with an electrically conductive surface and a feed cable and connected to a feed source.
摘要:
A method and apparatus for increasing capacity and performance of a base station for a sectorized cellular wireless network is disclosed in which one of the sector antennas is replaced or supplanted by a novel sub-sector antenna that generates a plurality of asymmetrical sub-sector coverage areas that collectively substantially cover the coverage area of the replaced sector antenna. The use of asymmetrical coverage areas permits the total coverage area to closely approximate the symmetrical sector coverage area without creating excessively large sub-sector handover zones or introducing severe degradation in the network performance. This in turn permits the selective replacement of a single sector antenna rather than the wholesale replacement of all sector antennas in a region, leading to lower transitional costs and the ability to provide a focused approach to capacity planning.
摘要:
A cellular location method is used in a cellular location system including a database. The cellular location method obtains radio measurements from a user terminal located in the communications network, extracts information from the obtained radio measurements, determines the location of the user terminal based on the extracted information, and stores the determined location of the user terminal and the extracted information as an entry in the database such that the determined location of the user terminal is retrieved based upon a matching score between the extracted information from the user terminal and extracted information from the specified user terminal. Additionally, when the determined location of the user terminal is retrieved based upon the matching score, the location of the specified user terminal is determined to be the determined location of the user terminal.
摘要:
There is described herein a low profile dipole antenna element. A pair of these elements can be arranged in a crossed manner to provide two orthogonal polarized radiators. The antenna element may be combined with an electrically conductive surface and a feed cable and connected to a feed source.
摘要:
A method, program, system and apparatus perform dynamic load balancing of coverage areas in a wireless communication network. The dynamic load balancing is performed by evaluating cell congestion based on location information of subscribers in the wireless communication network, collecting network parameters related to the wireless communication network and altering network parameters based on the evaluated cell congestion. After the network parameter is altered, the coverage areas are narrowed. Improvements in cell congestion and quality of server are then determined based on the narrowing of the coverage areas. Altering of the plurality of network parameters and evaluating of the cell congestion are performed continuously until a target quality of service is achieved.
摘要:
An embodiment of the present invention relates to a network management method for improving E911 services. The network management method including determining a location of at least one user in a communications network, creating a coverage map for the communications network based on the determined location of the at least one user in the communications network, and providing the coverage map to an emergency services database. Additionally, the coverage map includes information depicting at least one user in the communications network.