Abstract:
At a receiver location in a wireless communication system service area (22), a set of characteristics that describe a received ray of a subscriber signal is measured (26). In a model of the wireless communication system service area, a propagation path of a model ray launched from a location in the model of the wireless communication system service area that corresponds to the receiver location in the wireless communication system service area is determined (34), wherein the ray has model signal characteristics based upon the set of characteristics that describe the received ray of the subscriber signal. Thereafter, a subscriber location in the wireless communication system service area is estimated in response to the propagation path of the model ray.
Abstract:
In a method for managing resources in a base station in a code division multiple access communication (20), a resource shortage of a selected resource in a first base station (22) is detected. Next, a subscriber unit (34) having a communication link (38) with the first base station is selected. Thereafter, a handoff direction message is sent to the selected subscriber unit to cause a second base station (26) to contribute the selected resource, wherein the resource shortage in the first base station is alleviated. Resources that may experience shortages in the first base station include transmission power and available user spreading codes.
Abstract:
A method and apparatus for measuring a characteristic of a fading signal received using two or more branch diversity receivers (100) is presented. This fading characteristic is proportional to the speed of the user. In a first embodiment the number of times the antenna branches change in a selection diversity process is counted (160), and the result is scaled (170) for imbalance between the branches. The output of a fading quality estimator (180), indicative of the fading and generally proportional to the speed, is thereby obtained.
Abstract:
A method for assigning subscribers between narrowbeam sectors includes, in a first embodiment, off-loading subscribers to alternate sectors when a current sector becomes loaded beyond a loading threshold. The subscriber(s) having the greatest signal quality measure (e.g., power setting) are preferably selected for off-loading, since such are typically in regions having the greatest overlap with other sectors (e.g., close to the antennas). The selected subscriber(s) are transferred to an alternate sector, preferably one having the best received signal quality with the subscriber and also having loading beneath the loading threshold.
Abstract:
A method of and wireless communications unit (WCU) for providing service in a mesh network includes a receiver for receiving a first signal from a first WCU in the mesh network; a directional antenna system for coupling the signal to the receiver, the signal arriving from a first selected one of a first plurality of directions; a controller to control the directional antenna system such that the signal is coupled to the receiver according too a local predetermined pattern of the first plurality of directions; and a transmitter to send a second signal in a second selected one of the first plurality of directions, where the controller interrupts the local predetermined pattern and selects the second direction.
Abstract:
A method and apparatus for measuring a characteristic of a fading signal received using two or more branch diversity receivers (100) is presented. Th is fading characteristic is proportional to the speed of the user. In a first embodiment the number of times the antenna branches change in a selection diversity process is counted (160), and the result is scaled (170) for imbalance between the branches. The output of a fading quality estimator (180), indicative of the fading and generally proportional to the speed, is thereby obtained.
Abstract:
A peer device (132) is arranged and programmed for maintaining a virtual queue for an event, and a personal presence identifier (122) is carried by a user and coupled to the peer device by a short-range two-way wireless link. The peer device and the personal presence identifier are arranged and programmed to establish (58) a two-way personal area network with one another when the personal presence identifier is within wireless transmission range of the peer device. The personal presence identifier and the peer device are also arranged and programmed to exchange (82) needs specifications and capability specifications with one another after establishing the two-way personal area network.
Abstract:
A wireless communication system conducts (402) communications between a fixed portion (102) of the wireless communication system and a portable subscriber unit (122) carried by a user; and records (404) a relevant aspect of the communications, thereby producing recorded information. The system determines (405) a current time of day and a current position of the user and makes (406) a comparison of the recorded information with the current time of day and the current position of the user to determine whether an alert is necessary, and generates (412) the alert when the comparison determines the alert is necessary.
Abstract:
A method and apparatus for changing the electrical characteristics of an antenna in a communications system includes first and second conductive portions separated by a slot. Circuit elements are coupled between the first and second conductive portions, the circuit elements being operably controlled by a bias current to control flow of RF current within the first and second conductive elements, wherein the path of the RF current is directed to be in substantially different locations within the first and second conductive elements.
Abstract:
At a receiver location in a wireless communication system service area, a set of characteristics that describe a received ray of a subscriber signal is measured. In a model of the wireless communication system service area, a propagation path of a model ray launched from a location in the model of the wireless communication system service area that corresponds to the receiver location in the wireless communication system service area is determined, wherein the ray has model signal characteristics based upon the set of characteristics that describe the received ray of the subscriber signal. Thereafter, a subscriber location in the wireless communication system service area is estimated in response to the propagation path of the model ray.