Abstract:
A method and apparatus for use in a hybrid position location system. The method and apparatus combines measurements from Global Positioning System (GPS) and terrestrial transceiver stations to compute the location of a device. An algebraic solution to hybrid position location system equations is output from the method and apparatus. The method and apparatus determines the position of a device using a non-iterative method, as against the use of a conventional iterative least mean square method. The method of the present invention can be used to solve the location system equations in scenarios where a non-iterative solution is desirable. In certain scenarios, the location system equations may have two possible solutions. An iterative method would converge on one of the solutions, without any indication of the existence of the other ambiguous solution. Moreover, the iterative method may converge on the incorrect of the two ambiguous solutions. Use of the presently disclosed method and apparatus yields both the ambiguous solutios. The disclosed method may be followed up with iterative methods, using the solutions from the algebraic method as initial estimates of the device location for the iterative method. A different process can then select the correct solution. Thus, the algebraic method can be used to detect the existence of ambiguous solutions, and to find both solutions.
Abstract:
Un procedimiento en un sistema de comunicaciones caracterizado por, detectar (812) al menos un indicador de notificación para al menos un servicio en un primer periodo de modificación de una planificación de transmisión de información de señalización, estableciéndose el indicador de notificación para cada servicio en el primer periodo de modificación si la información crítica de señalización requerida para el servicio se cambia en un segundo periodo de modificación de la planificación de transmisión de información de señalización tras el primer periodo de modificación; recibir (816, 818), en el segundo periodo de modificación, la información crítica de señalización para cada servicio que tenga el indicador de notificación establecido en el primer periodo de modificación; y terminar el procesamiento de la información de señalización si la información de cambios indica que no hay cambios en la información crítica de señalización para ninguno de los servicios.
Abstract:
Techniques for determining valid (i.e., supported) TFCs from among all configured TFCs for normal and compressed modes. These techniques maintain sufficient historical information such that 'TFC qualification' may be accurately performed. In a first scheme, Tx_power_requirement states are maintained for different combinations of each TFC. One combination is applicable for each TFC at each TFC interval, and valid TFCs are determined from applicable combinations in the proper state(s). In a second scheme, two Tx_power requirement states are maintained for each TFC for the normal and compressed modes. In a third scheme, a single Tx_power requirement state is maintained for each TFC for both modes based on a particular relative power requirement. In a fourth scheme, Tx_power_requirement states are maintained for a set of relative 'bins' that cover the total range of required transmit power for all TFCs. And in a fifth scheme, a set of relative power requirement thresholds are maintained.
Abstract:
A system and method for assisting an integrated GPS/ wireless terminal unit in acquiring one or more GPS satellite signals from the GPS satellite constellation. 5 The invention includes a method for narrowing the PN-code phase search. That is, by accounting for the variables in geographic location and time delay relative to GPS time, the systems and methods of the present invention generate a narrow code-phase search range that enables the terminal unit to more quickly acquire and track the necessary GPS satellites, and thereby more quickly provide accurate 10 position information to a requesting entity. c'N 001 lJ~) LI-i 0 LI-i 00 H 00 z C) tI~)
Abstract:
A method in a communication system is disclosed. The method includes: transmitting signaling information for at least one service in each of a number of repetition periods of a current modification period and transmitting changes to the critical signaling information for the service starting at a next modification period. The signaling information is comprised of critical signaling information and non-critical signaling information. (62) Divided Out of 549092
Abstract:
A method in a communication system is provided, including: setting at least one counting flag for at least one service in a current modification period, the counting flag for each service being set at the start of the current modification period if counting is enabled for service; and transmitting access information in each of a number of access info periods into the current modification period, the access information including the at least one counting flag and access information used to access the system for counting. (62) Divided Out of 549092
Abstract:
A method and system that enables multiplexing a plurality of data streams onto one data stream based on data stream priorities and available transport frame combinations (TFCs) is disclosed. A mobile station 12 has applications that produce separate data streams. Example applications include voice 32, signaling 34, E-mail 36 and web applications 38. The data streams are combined by a multiplexer module 48 into one data stream called the transport stream 50. The transport stream 50 is sent over the reverse link to base station transceivers (BTS) 14. The multiplexer module 48 multiplexes the data streams onto the transport stream according to their priorities and the available TFCs.
Abstract:
Techniques for transmitting signaling information for broadcast and multicast services are described. A base station transmits signaling information for each service in accordance with a schedule that includes a repetition period and a modification period. The signaling information is sent in each repetition period to allow wireless devices to quickly obtain this information. Changes to the critical signaling information are permitted at the start of each modification period, which is an integer multiple of the repetition period. Whenever the critical signaling information for a given service is changed in a given modification period, a notification indicator for the service is set in an entire preceding modification period to inform the wireless devices of the impending change. The wireless devices can detect the notification indicator being set in the preceding modification period and can retrieve the updated critical signaling information in the following modification period.