Abstract:
PROBLEM TO BE SOLVED: To reduce a setup time of a dispatch call. SOLUTION: In a CDMA (code division multiple access) wireless communication system 200, a dispatch call can be established between two CDMA mobile stations 202, 226, or between other mobile stations and the CDMA mobile station, or between a CDMA mobile station and a computer 236 located outside of the wireless system. To reduce the delay normally associated with call set up in a CDMA system, a dispatch processing network is provided in addition to a telephony switch. Dispatch calls and call set up requests are routed to the dispatch processing network from the radio access network which includes base stations 204, 206. Once a dispatch call request is made, while the dispatch processing network begins setting up a traffic channel for the originating mobile communication device, the target is also paged, and upon responding, set up on a traffic channel.
Abstract:
A change in user interest level of a user application of a client device in communication with a network infrastructure at a first quality of service level is assessed (306). In response, the quality of service associated with the user application is dynamically changed (308) to a second quality of service level, while keeping the user application active, based, at least in part, on the change in user interest level of the user application.
Abstract:
The present invention addresses the need for a device and method of frame reconstruction among soft handoff legs that improves the reliability of received information without reducing RF capacity. Given received frames from each leg of a soft handoff (300-303) a reconstructed frame (304) is produced. Subframes (e.g., 362) with passing inner frame quality indicators (352) are selected for the reconstructed frame. For portions of the reconstructed frame (e.g., 324 and 344) that do not have corresponding portions in the leg frames with passing inner frame quality indicators, a bit-wise majority rule is applied to select values.
Abstract:
An apparatus (200) checks voice quality when in a vocoder bypass mode. If the voice quality level is beyond an acceptable range, the apparatus (200) ends the vocoder bypass mode and returns to tandem vocoding. For example, a vocoder bypass controller (206) includes a speech quality detector (225) that determines the speech quality level of speech information based on at least one of detected volume level, echo level and noise level of the speech information. The vocoder bypass controller (206) with the speech quality detector (225) outputs a speech quality-based vocoder bypass control signal (236) to selectively activate or deactivate a vocoder bypass operation in response to the speech quality-based vocoder bypass control signal (236). In another embodiment, a network element for communicating speech packets includes an incoming decoder (512) and a speech quality detector (514) operative to determine the speech quality level of incoming speech packets. The speech quality detector (514) determines whether to activate speech quality enhancement operations in response to a determined speech quality level of incoming speech packets.
Abstract:
Un método para transiciones eficientes entre estados operativos en una red de comunicación, comprendiendo el método las etapas de: tener una estación de telefonía móvil en un estado Inactivo; requerir una transferencia de datos; pasar la estación de telefonía móvil del estado Inactivo a un estado Activo; y caracterizado por establecer una conexión entre una Función de Encaminamiento de IP (106) y una Función de Portadora de RF (110) de manera que una conexión existente desde la Función de Encaminamiento de IP (106) a una Función de Control de Localización (108) es modificada de manera que la conexión ahora finaliza en la Función de Portadora de RF (110) sin pasar a través de la Función de Control de Localización (10$); donde la Función de Portadora de RF (110) es: i) un equipo de Sitio de Base y un Selector, ii) un Selector y una o más Estaciones de Emisor - Receptor de Base, iii) un Selector y una o más Estaciones de Base, o iv) uno o más Puntos de Acceso; y la Función de Control de Localización (1Q$) es: i) una Función de Control de Paquetes, o ii) un Controlador de Localización de un Controlador de Punto de Acceso Celular (107).
Abstract:
In a CDMA wireless communication system (200) a dispatch call can be established between two CDMA mobile stations (202, 226), or between other mobile stations and the CDMA mobile station, or between a CDMA mobile station and a computer(236) located outside of the wireless system. To reduce the delay normally association with call set up in a CDMA system, a dispatch processing network (128, 144) is provided in addition to a telephony switch (118). Dispatch calls and call set up requests are routed to the dispatch processing network from the radio access network (110) which includes base stations (204, 206). Once a dispatch call request is made, while the dispatch processing network begins setting up a traffic channel for the originating mobile communication device, the target is also paged, and upon responding, set up on a traffic channel. The concurrence of establishing radio links with the target and originating communication devices substantially reduces dispatch call set up time.
Abstract:
A method and a system for switching a mobile device (102) from a source Base Transceiver Station (BTS) to a target BTS in a mobile network (100) are disclosed. The method includes detecting an intention to switch the cell transmitted by the mobile device. A Base Station Controller (BSC) (112) then receives the switch detect time from the source BTS and/or the target BTS. The switch detect time is processed by the BSC to determine the switch time for the mobile device. The mobile device then switches from communication with the source BTS to communication with the target BTS, based on the switch time.
Abstract:
An apparatus (200) checks voice quality when in a vocoder bypass mode. If the voice quality level is beyond an acceptable range, the apparatus (200) ends the vocoder bypass mode and returns to tandem vocoding. For example, a vocoder bypass controller (206) includes a speech quality detector (225) that determines the speech quality level of speech information based on at least one of detected volume level, echo level and noise level of the speech information. The vocoder bypass controller (206) with the speech quality detector (225) outputs a speech quality-based vocoder bypass control signal (236) to selectively activate or deactivate a vocoder bypass operation in response to the speech quality-based vocoder bypass control signal (236).
Abstract:
Upon receiving (101) a vocoded voice frame and detecting (102) that the received vocoded voice frame comprises an erased frame, one automatically replaces (103) the erased frame with a valid frame having at least one error condition. In a preferred approach this error condition is one that is known to cause a receiving target platform to invoke a corresponding erasure process with respect to the valid frame when received.