Abstract:
A method and apparatus for determining the data rate of a reverse link communication of an access terminal includes receiving a reverse activity bi t (RAB) from an access network in the communication system, and passing the RA B to multiple digital filters to produce filtered RABs. The reverse link data rate is determined based on these filtered values of the RABs. From the filtered RAB values a continuous fluid power level is determined for each ra te update. The access terminal maps the continuous fluid power level to actual physical transmissions by dithering among discrete power levels allowed by t he physical layer.
Abstract:
A method and apparatus for determining the data rate of a reverse link communication of an access terminal includes receiving a reverse activity bit (RAB) from an access network in the communication system, and passing the RAB to multiple digital filters to produce filtered RABs. The reverse link data rate is determined based on these filtered values of the RABs. From the filtered RAB values a continuous fluid power level is determined each rate update. The access terminal maps the continuous fluid power level to actual physical transmissions by dithering among discrete power levels allowed by the physical layer.
Abstract:
Systems and methods for decreasing delays and thereby improving the performance of data transmissions in wireless communication systems by enabling increased data transmission rates to be selected for a reverse link between an access terminal and an access network. The new data rate is selected from several limiting rates, including a data-justified rate and a ramp-up-limited rate. In one embodiment, the data-justified rate is constrained to decrease in a controlled manner and cannot suddenly drop to 0. In another embodiment, the ramp-up-limited rate is allowed to return quickly to a sticky rate if the system is not busy rather than having to ramp up to the sticky rate according to the standard probabilities.
Abstract:
Embodiments disclosed herein relate to carrier allocation and management in multi-carrier communication systems. In some embodiments, the number of carriers assigned to an access terminal on a forward link may be determined by an access network, and the number of carriers assigned to the access terminal on a reverse link may be based on a cooperative process between the access terminal and the access network. In other embodiments, the number of carriers assigned to the access terminal on the reverse link may also be determined by the access network, e.g., in relation to the scheduling information received from the access terminal.
Abstract:
Un procedimiento que comprende: codificar datos de vídeo mediante un dispositivo codificador; formar un paquete de protocolo de Internet (IP) con los datos de vídeo codificados, comprendiendo el paquete macrobloques (MB) de datos de vídeo y pasando información de los macrobloques desde el codificador a una capa de protocolo de transporte en tiempo real (RTP); transmitir los paquetes a través de un canal inalámbrico a una red de acceso; en una capa de control de acceso al medio (MAC) del dispositivo codificador, recibir un acuse de recibo negativo (NAK) de la red de acceso; determinar si el NAK recibido está asociado con el paquete que contiene datos de vídeo y si el NAK recibido está asociado con el paquete que contiene datos de vídeo, informar a un módulo de protocolo de enlace de radio (RLP) del NAK recibido, determinar en el módulo RLP qué cola de RLP contiene un paquete que experimentó un error en la transmisión; y realizar el control de errores, en el que realizar el control de errores comprende mantener un mapa entre paquetes de protocolo de Internet (IP) y macrobloques de datos de vídeo; después de determinar qué paquete IP contiene datos que se perdieron en la transmisión, usar el mapa para convertir el paquete IP en macrobloques de una trama de vídeo para determinar qué macrobloques se perdieron en la transmisión; y realizar el control de errores para los macrobloques que se perdieron en la transmisión; y en el que realizar el control de errores comprende al menos uno de (a) restringir un rango de búsqueda de estimación de movimiento para que una parte dañada no se use como predicción, (b) intracodificar macrobloques coubicados y macrobloques vecinos, y (c) usar diferentes tramas de referencia para macrobloques coubicados.
Abstract:
Access terminals and network nodes are adapted to conduct access terminal registrations. In one example an access terminal may obtain a data message for transmission and registration information associated with the access terminal. The access terminal may send a message including the data message and the registration information. A network node can receive a message from an access terminal where the received message includes a data message and access terminal registration information. The network node can register the access terminal with a network based on the access terminal registration information included in the received message. The network node can also process the data message included in the received message. Other aspects embodiments and features are also claimed and described.
Abstract:
En una modalidad particular, se describe un método que incluye recibir un mensaje de realimentación en un transmisor, el mensaje de realimentación incluye una indicación de una magnitud de congestión y un índice sostenible de transmisión de datos en un receptor. El método también incluye determinar un índice de descongestión y un tiempo de descongestión basándose por lo menos en uno del índice sostenible de transmisión de datos y la magnitud de congestión cuando la magnitud de congestión cumple con un valor de umbral. El método además incluye enviar datos en el índice de descongestión desde el transmisor hasta el receptor durante el tiempo de descongestión. El método además incluye ajustar un índice de transmisión de datos en el transmisor para el índice sostenible de transmisión de datos después de que se finaliza el tiempo de descongestión.
Abstract:
In a wireless communication system, an apparatus and a method are provided for controlling reverse link interference among access terminals that are power controlled by a sector of a base station. In an embodiment, the maximum effective noise power spectral density is used as a parameter for controlling the level of reverse link loading, by setting a reverse activity bit (RAB) to signal the access terminals to reduce their data rates in order to minimize interference between the access terminals if the maximum effective noise power spectral density is above a predetermined threshold.
Abstract:
Systems and methods for decreasing delays and thereby improving the performance of data transmissions in wireless communication systems by enabling increased data transmission rates to be selected for a reverse link between an access terminal and an access network. The new data rate is selected from several limiting rates, including a data-justified rate and a ramp-up-limited rate. In one embodiment, the data-justified rate is constrained to decrease in a controlled manner and cannot suddenly drop to 0. In another embodiment, the ramp-up-limited rate is allowed to return quickly to a sticky rate if the system is not busy rather than having to ramp up to the sticky rate according to the standard probabilities.
Abstract:
A method and apparatus for determining the data rate of a reverse link communication of an access terminal is disclosed. The method includes the steps of: (a) receiving at the access terminal a reverse activity bit from an access point in a communication system, (b) passing the reverse activity bit to a digital filter to produce a filtered reverse activity bit, wherein the filtered reverse activity bit is based on accumulated value of the reverse activity bit, and (c) determining the data rate based on the filtered reverse activity bit.