Abstract:
The present invention relates to a method and arrangement in a user equipment unit for activation of downlink component carriers. Even though configured to monitor multiple component carriers,a user equipment does not start to monitor them immediately but only one, or very few, carriers. Only if it decodes a DL assignment it will start to monitor multiple component carriers. After one, or possibly multiple, subframes where the UE is not scheduled anymore it falls back to its original state, i.e. it only monitors one (or very few) component carriers.
Abstract:
The invention relates to devices and methods for transmitting data on a radio channel comprising to jointly encode (S4) a preamble format with a first random access configuration, forming an extended random access configuration. The extended random access configuration is then transmitted (S6) on the radio channel.
Abstract:
A method and apparatus for use in a wireless communication system to detect frequency division duplex (FDD) or time division duplex (TDD) after the radio timing and cell group ID have been determined from the S-SyS during a cell search, by correlating reference symbols (RSs) and detecting whether the RSs are on resource elements corresponding to FDD or TDD. By correlating the known RS, which is known after the cell ID is detected, to the assumed RS positions for FDD or TDD, the duplex form is detected.
Abstract:
nó de rede de rádio, equipamento de usuário e métodos para os mesmos. a presente invenção refere-se a algumas modalidades de um método em um equipamento de usuário (10) para determinar uma potência de transmissão a ser usada pelo equipamento de usuário quando transmitindo em uma rede de comunicações via rádio, equipamento de usuário (10) que é servido por um nó de rede de rádio (12, 12') na rede de comunicação via rádio. o equipamento de usuário (10) recebe, a partir do nó de rede de rádio (12, 12'), uma indicação indicando um conjunto de parâmetros de controle de potência dos múltiplos conjuntos de parâmetros de controle de potência, múltiplos conjuntos de parâmetros de controle de potência que são armazenados no equipamento de usuário (10). o equipamento de usuário (10) determina uma potência de transmissão baseada no conjunto indicado de parâmetros de controle de potência.
Abstract:
The present invention relates to demodulation reference signals (DM-RS) power boosting for user equipment (UE) specific reference signals without explicit dynamic control signalling indication and enables full transmission power utilization.
Abstract:
The technology disclosed provides the ability for a subframe to be configured as a "flexible" subframe. As a result, at least three different types of sub frames in a TDD system may be configured: a downlink ("DL") subframe, an uplink ("UL") subframe, and a "flexible" subframe. While the DL and UL subframes are preconfigured for each frame instance, the flexible subframes are dynamically allocated to be an uplink subframe in one instance of a frame and a downlink subframe in another instance of the frame.
Abstract:
The basic idea of the present invention is to not only design a frequency-selective precoder with respect to the channel properties but also to ensure that the time- domain spread is limited. Hence the energy of the time-domain impulse response of the frequency-selective precoder is concentrated. According to a first embodiment, the time-domain spread is limited by designing a precoder such that it allows smooth transitions in the frequency domain between the values of the precoder when the precoder provides a staircase function. The smooth transitions can either be achieved by lowpass filtering the frequency-domain representation, the staircase function, of the precoder or by designing the precoder such that the sharp jumps are replaced by slopes. According to a second embodiment, the time-domain spread is controlled. The control may be achieved by employing a time-domain parameterization to precisely control the introduced additional time-domain spread.
Abstract:
The present invention relates to methods and arrangements in a wireless communication system that enable the use of multi-codeword transmission and ACK/NACK compression with low performance loss. It also enables the use of advanced receivers of reasonable complexity. This is achieved by a solution based on the even distribution of the symbols of separately coded blocks of information bits over the available physical resources before transmission. Each physical resource will thus carry a mixture of symbols from all blocks of information bits, which results in a more similar channel quality for the blocks of information bits. A compressed ACK/NACK message corresponding to the blocks of information bits will thus be more accurate and the performance loss due to the ACK/NACK compression can be reduced.
Abstract:
The present invention ensures that the UEs are able to make use of all the available reference signals that can be used in a cell for performing UE measurements, estimations or demodulations. That is achieved by indicating on a downlink common or shared channel, the MIMO mode settings associated with a specific network node. The indicated MIMO mode settings explicitly or implicitly indicate available common reference signals and/or dedicated reference signals to be used for said UE measurements, estimations or demodulations, which implies that measurements, estimations or demodulations can be performed based on said received indication.
Abstract:
The technology applies to a cellular radio network where each cell area is associated with a radio base station in which mobile terminals communicate with at least one of the base stations over a radio interface. The mobile terminals perform mobility-related measurements on downlink signals received from a corresponding neighbor cell during time slots configured for downlink transmission measurement. A configuration node receives input information, and based on that received input information, determines measurement time slot configuration information. The node provides the measurement time slot configuration information to the base stations so that the base stations may signal the measurement time slot configuration information to mobile terminals.