摘要:
Embodiments of an Evolved Node-B (eNB), shared spectrum controller and methods for communication in shared spectrum are generally described herein. A mobile network shared spectrum controller may operate as part of a domain of a mobile network. A public shared spectrum controller may operate externally to the mobile network domain. The mobile network shared spectrum controller and the public shared spectrum controller may operate cooperatively to perform operations of a shared spectrum controller, such as management of secondary usage of shared spectrum by a group of eNBs. The mobile network shared spectrum controller may obfuscate at least a portion of network configuration information from the public shared spectrum controller to enable maintenance of confidential information a within the mobile network domain.
摘要:
An embodiment for a method for user equipment assisted three-dimensional beamforming is disclosed. The method may include the user equipment receiving a reference signal from an eNodeB comprising an antenna. The user equipment may then calculate an optimum antenna tilt for the antenna and transmit feedback to the base station. The feedback may include an indication of the optimum antenna tilt for the antenna. Additional signals may be received from the base station after a transmit angle of the antenna has been adjusted in response to the optimum antenna tilt.
摘要:
Disclosed are UE-feedback techniques to support the adaptive DMRS transmission. A UE and eNB support adaptive DMRS transmission in which an eNB adjusts (i.e., selects) a DMRS pattern based on information describing channel conditions perceived by the UE. The UE may explicitly provide the channel conditions, or implicitly provide them by selecting a desired DMRS pattern.
摘要:
A receiver circuit receives a signal including a first reference signal from a first antenna port that is allocated to the UE. The receiver circuit includes a descrambling and despreading unit that despreads and descrambles the signal using a spreading code of the first antenna port and a scrambling sequence assigned to the UE to generate a first antenna port signal. The descrambling and despreading unit despreads and descrambles the signal using a spreading code of a second antenna port and the scrambling sequence assigned to the UE, wherein the second antenna port is unallocated to the UE to generate a second antenna port signal. A channel estimator generates a channel estimate of the first antenna port based on the first antenna port signal. An estimation unit estimates an interference and noise covariance measure based on the first antenna port signal, the channel estimate and the second antenna port signal.
摘要:
A device includes a first adjustment unit which is configured to adjust a power of a first carrier signal, and a second adjustment unit configured to adjust a power of a second carrier signal. The first adjustment unit is configured to adjust the first carrier signal power based on a maximum allowable imbalance between the first carrier signal power and the second carrier signal power. A method for controlling a transmit power in a user equipment of a radio communications system includes calculating in the user equipment first carrier signal power and a second carrier signal power. The method further includes adjusting in the user equipment the calculated transmit power for at least one out of the first carrier signal and the second carrier signal based on the maximum allowable power imbalance between the first carrier signal power and the second carrier signal power.
摘要:
A method includes receiving a first signal at a circuit from a first base station and receiving a second signal at the circuit from a second base station different from the first base station. The method further includes determining a first channel estimate based on the first signal, determining a second channel estimate based on the second signal and determining a feedback information based on the first channel estimate and based on the second channel estimate.
摘要:
A receiver is configured to receive a receive signal including a plurality of signal components, each signal component indicating a channel of an antenna port and an associated scrambling sequence, wherein a first one of the channels indicated by a first one of the signal components which is based on a first scrambling sequence is allocated to the receiver for data reception and a second one of the channels indicated by a second one of the signal components which is based on a second scrambling sequence different from the first scrambling sequence is interfering with the allocated channel. The receiver includes an interference reduction unit configured to combine an estimate of the first one of the signal components and an estimate of the second one of the signal components to provide an interference-reduced signal.
摘要:
A method includes receiving a signal including first data precoded on the basis of a first codebook entry of a codebook, wherein the codebook includes at least one further codebook entry, averaging a set of matrices to obtain a mean matrix wherein each matrix of the set of matrices is determined on the basis of a respective other codebook entry of the at least one further codebook entry and determining a covariance matrix on the basis of the mean matrix.
摘要:
A method includes a first step of receiving a signal on the basis of a mobile communications standard supporting multiple predefined modulation alphabets and a second step of detecting data of the received signal on the basis of a modulation alphabet which includes modulation symbols of at least two of the multiple predefined modulation alphabets.
摘要:
An apparatus for determining a target precoding matrix from a plurality of precoding matrix candidates is provided. The apparatus includes a covariance matrix value provider, a real part determiner and a precoding matrix determiner. The precoding matrix determiner is adapted to determine the target precoding matrix from the plurality of precoding matrix candidates, wherein the precoding matrix determiner is configured to determine the target precoding matrix based on at least one of the one or more real covariance values.