Abstract:
A radio communications system conducts radio communications using basic physical channels. Each basic physical channel defines a time slot and a radio frequency for transmission. Radio communication is established between a radio base station and multiple UEs over the same basic physical channel. Three or four subchannels are provided in the same basic physical channel to simultaneously support three or four full rate UE communications, seven or eight half rate UE communications, or other equivalent combinations. A first baseband transmitter chain can map full rate data corresponding to first and second full rate UE communications (or equivalent) as adaptive quadrature phase shift keying, AQPSK, signals onto a first and a second of the three subchannels. A second baseband transmitter chain can map full rate data corresponding to a third and/or fourth full rate UE communication (or equivalent) as phase shifted signals onto a third of the three subchannels.
Abstract:
Method and an apparatus for application of distortion shaping when using Peak-to-Average Ratio (PAR) reduction. The apparatus obtains an input signal. The apparatus applies, on the input signal, the PAR reduction and the distortion shaping to form an output signal. A bandwidth associated with the distortion shaping covers multiple channel bandwidths comprised in the input signal, which multiple channel bandwidths are associated with one or more Radio Access Technologies (RATs). Embodiments herein facilitate the distortion shaping and applicability of PAR reduction, in particular in case one of the RATs is Global System for Mobile Communications (GSM) or similar and/or the input signal is associated with radio communications systems that support multiple RATs.
Abstract:
A radio base station and method are provided for use in a radio communications system that conducts radio communications over a radio interface using basic physical channels. Each basic physical channel defines a time slot and a radio frequency for transmission. Radio communication is established between a radio base station and multiple user equipments (UEs) over the same basic physical channel. Subchannels are provided in the same basic physical channel to simultaneously support three or four full rate UE communications, seven or eight half rate UE communications, or other combinations. A first baseband transmitter chain is configured so that it can map full rate data corresponding to first and second full rate UE communications (or equivalent) as adaptive quadrature phase shift keying, AQPSK. A second baseband transmitter chain is configured so that it can map full rate data corresponding to a third and/or fourth full rate UE communication (or equivalent) as phase shifted signals onto a third of the three subchannels.
Abstract:
A mobile station, a core network node, a base station subsystem, and various methods are described herein for implementing longer paging cycles (longer Discontinuous Reception (DRX) mode) in a cellular network which has a benefit of reducing the energy consumption of the mobile station's battery.
Abstract:
Un método (200) realizado por un nodo (1021, 1022) de acceso inalámbrico para mejorar la eficiencia de utilización del ancho de banda en un canal común de enlace descendente, DL, cuando se transmite información relacionada con el dispositivo (205, 209) a un dispositivo inalámbrico (1042) o un grupo de dispositivos inalámbricos (1043, 1044), comprendiendo, el método: determinar (202) uno o más formatos de bloque de transporte que van a ser utilizados para transmitir la información relacionada con el dispositivo en el canal común de DL al dispositivo inalámbrico o al grupo de dispositivos inalámbricos, caracterizado adicionalmente por requerir el o los formatos de bloque de transporte una cantidad de transmisiones repetidas de la información relacionada con el dispositivo en el canal común de DL para cumplir con una clase de cobertura del dispositivo inalámbrico o con una clase de cobertura común para el grupo de dispositivos inalámbricos.
Abstract:
Un dispositivo inalámbrico (208) configurado para comunicarse con un nodo (206) de red central, CN, comprendiendo el dispositivo inalámbrico: un procesador (226), y una memoria (228) que almacena instrucciones ejecutables por el procesador, en el que el procesador interactúa con la memoria para ejecutar las instrucciones ejecutables por el procesador, por lo que el dispositivo inalámbrico es funcional para: determinar (602), en base a las condiciones de radio, una clase de cobertura, CC, de enlace descendente, DL, actual que va a cambiarse a una DL CC más alta o a una DL CC más baja, en el que la DL CC más alta indica que se necesita al menos una repetición ciega más en adición a las proporcionadas por la DL CC actual, y en el que la DL CC más baja indica que se necesita al menos una repetición ciega menos de las proporcionadas por la DL CC actual, y en base a la determinación de la necesidad de cambiar la DL CC actual a la DL CC más alta, transmitir (604) una indicación de la DL CC más alta para el nodo de CN realizando un procedimiento de actualización de célula, en el que la operación de determinación y la operación de transmisión se realizan en un tiempo predeterminado antes de la siguiente aparición de un grupo nominal de radiomensajería.
Abstract:
An example method in a user equipment comprises generating (1220) a random access preamble signal and transmitting (1230) the random access preamble signal. This generating of the random access preamble signal comprises generating a Single-Carrier Frequency-Division Multiple Access, SC-FDMA, random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the SC-FDMA random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.