Abstract:
Techniques for minimizing the loss of radio signals transmitted on and/or received from serving cells in a multi-carrier system by selectively adapting the time instance at which a wireless terminal: (1) changes its radio frequency (RF) bandwidth or activates a second RF chain or any additional RF chain for measuring on one or more secondary serving cells, and/or (2) performs setup or release of one or more secondary serving cells. An example method, implemented in a radio network node, comprises determining (510) a scheduling instance during which a wireless terminal is expected to be scheduled on at least one cell; and, determining (520) a timing at which to send a setup or release command for at least one secondary cell such that the requested set up or release procedure does not coincide with the scheduling instance.
Abstract:
System Information (SI) of a second node of a wireless network is obtained for a wireless device that is communicating with a first node of the wireless network. In response to at least one criterion, one or more of the following operations are performed., to obtain the SI of the second node: decoding at least one channel of the second node to obtain the SI of the second node; receiving the S3 of the second node from a node other than the second node; and/or inferring at least one component of the SI of the second node based on a corresponding at least one component of the SI of the first node. Related systems, methods, nodes and wireless devices are also described.
Abstract:
A method in a node is disclosed. The method comprises determining (804) a beam forming quality indicator for the network node, the beam forming quality indicator indicating a beam forming performance gain from the network node having beam forming capability, wherein the beam forming quality indicator comprises at least or is a function of at least a reference signal quality and an achievable signal quality. The method further comprises performing (808) one or more radio operations using the determined beam forming quality indicator.
Abstract:
Multiple antennas employed at transmitting and receiving nodes (410, 420) can significantly increase a MIMO system capacity, especially when channel knowledge of link(s) between the transmitting and receiving nodes (410, 420) is available at the transmitting node (410). Channel knowledge may be acquired through feedback provided by the receiving node (420) based on a plurality of common pilots transmitted by the transmitting node (410). The common pilots may include legacy and non-legacy pilots. If the feedback indicates that data demodulation at the receiving node (420) can be enhanced, the transmitting node (410) may also transmit demodulation pilot signal(s), which may coincide with the transmission of data. The receiving node (420) can use the demodulation pilot signal(s), alone or with the common pilot signal(s), to demodulate data received from the transmitting node (420). The transmitting node (410) may notify the receiving node (420) to monitor for the demodulation pilot signal(s) through higher layer signaling and/or scheduling orders over a control channel.
Abstract:
Un método ejemplificativo para probar una estación de base que admite transmisión de múltiples portadoras mediante múltiples unidades transceptoras comprende transmitir una señal de prueba de interferencia en una o más bandas de transmisión del aparato estación de base, usando las múltiples unidades transmisoras y la agrupación de antenas, donde la señal de prueba de interferencia tiene un EIRP total de al menos aproximadamente igual a la suma de los respectivos máximos EIRP de régimen de cada una de las cantidades predeterminadas de portadoras simultáneas. Este método ejemplificativo además comprende transmitir una señal de prueba deseada al aparato estación de base, en una banda receptora de dicho aparato usando un generador de señales de prueba y una antena de prueba separada del aparato de estación de base, y evaluar una sensibilidad de recepción del aparato estación de base según la señal de prueba deseada, al tiempo que se transmite la misma.
Abstract:
Multiple antennas employed at transmitting and receiving nodes (410 420) can significantly increase a MIMO system capacity especially when channel knowledge of link(s) between the transmitting and receiving nodes (410 420) is available at the transmitting node (410). Channel knowledge may be acquired through feedback provided by the receiving node (420) based on a plurality of common pilots transmitted by the transmitting node (410). The common pilots may include legacy and non legacy pilots. If the feedback indicates that data demodulation at the receiving node (420) can be enhanced the transmitting node (410) may also transmit demodulation pilot signal(s) which may coincide with the transmission of data. The receiving node (420) can use the demodulation pilot signal(s) alone or with the common pilot signal(s) to demodulate data received from the transmitting node (420). The transmitting node (410) may notify the receiving node (420) to monitor for the demodulation pilot signal(s) through higher layer signaling and/or scheduling orders over a control channel.
Abstract:
According to certain embodiments, a method in a network node (100 A) for determining spectrum utilization for a plurality of numerologies transmitted within an allocated bandwidth includes selecting one or more of the plurality of numerologies. For each of the one or more selected numerologies, a spectrum utilization is determined. The spectrum utilization is based on the spectrum utilization that would be achieved if the selected numerology was transmitted across the allocated bandwidth. A physical resource block (PRB) allocation is calculated based on the allocated bandwidth and the spectrum utilization.
Abstract:
According to certain embodiments, a method in a network node (100 A) for determining spectrum utilization for a plurality of numerologies transmitted within an allocated bandwidth includes selecting one or more of the plurality of numerologies. For each of the one or more selected numerologies, a spectrum utilization is determined. The spectrum utilization is based on the spectrum utilization that would be achieved if the selected numerology was transmitted across the allocated bandwidth. A physical resource block (PRB) allocation is calculated based on the allocated bandwidth and the spectrum utilization.