摘要:
A User Equipment (UE) and a method performed by the UE for power control of uplink transmissions, when the UE is connected in dual connectivity mode to at least a first network node and a second network node are provided. The method comprises determining to perform a first uplink transmission to the first network node and a second uplink transmission to the second network node, the uplink transmissions to be performed simultaneously. The method also comprises determining a respective first and second uplink transmission power for the first and the second uplink transmission; and transmitting the first and the second uplink transmissions at the first and the second uplink transmission power respectively when the sum of the first and second uplink transmission power is below a maximum transmission power.
摘要:
The present disclosure relates to a method in a User Equipment (UE) for use in handover from its serving base station to a neighboring base station. The method includes: performing one or more downlink quality measurements of the neighboring base station on one or more downlink subframes in a TDD configuration of the neighboring base station to obtain a downlink quality measurement result; and transmitting said downlink quality measurement result to the serving base station for enabling the serving base station to determine whether to trigger the handover or not.
摘要:
Wireless communication methods determine a position of a first wireless base station. A wireless communication frequency to be used by the first wireless base station is determined by identifying a common frequency that can be used at a plurality of locations surrounding and spaced apart from the position of the first wireless base station that was determined. The first wireless base station may be a femto-base station and the frequency may be an unlicensed frequency. Related systems and devices are also described.
摘要:
The embodiments herein relate to method in a network node (301) for handling scheduling of a wireless device (305) in a communications network (300). The network node (301) is adapted to communicate with the wireless device (305) over a radio channel (310). The network node (301) dynamically allocates a set of non-consecutive subframes in which the network node (301) is to transmit data to the wireless device (305) or receive data from the wireless device (305). The network node (301) transmits a multi-Time Transmission Interval, TTI, scheduling message to the wireless device (305), which multi-TTI scheduling message comprises information indicating the dynamically allocated non-consecutive subframes.
摘要:
The invention discloses a beamforming method for polarized antenna array consisting of a plurality of antenna elements, applied to single layer beamforming or dual layer beamforming, which includes the steps: determining (201) first beamforming weights for phase compensation among the antenna elements within each polarization direction; determining (202) second beamforming weights for phase compensation between equivalent channels of two polarization directions; and calculating (203) hybrid beamforming weights as product of the first beamforming weights and the second beamforming weights. A beamforming apparatus for polarized antenna array is also provided in the invention as well as a radio communication device and a system thereof With the invention, the single-layer and dual-layer beamforming weights are determined for the cross-polarized antenna array without requiring full channel knowledge or the aid of PMI. Computation complexity is lowered and full power amplifier utilization can be achieved.
摘要:
The present disclosure relates to a method performed by a wireless terminal (2) operating with dual connectivity with a first node (4) and a second node (6). The method comprises receiving (100) information, from at least one of said nodes (4,6), associating (200) uplink transmissions to each node (4, 6) according to the received information, and applying (300) a set of node specific parameters to the uplink transmissions associated with each node (4, 6). The present disclosure also relates to a wireless terminal (2) configured to perform the method.
摘要:
The embodiments herein relate to a method in a network node (301) for handling scheduling of a wireless device (305) in a communications network (300). The network node (301) is adapted to communicate wirelessly with the wireless device (305) over a radio channel (310). The network node (301) determines that a data transmission or data reception corresponding to a multi-TTI scheduling message previously transmitted to the wireless device (305) should be at least one of adjusted, interrupted and terminated. The network node (301) transmits, to the wireless device (305), information indicating that the data transmission or data reception corresponding to a previously transmitted multi- Transmission Time Interval, TTI, scheduling message should be at least one of adjusted, interrupted and terminated as determined.
摘要:
Techniques are disclosed for determining transmitter antenna weights at a base station (12) having more available transmit antennas (150) than the available number of reference signals. An exemplary method includes transmitting (530) a plurality of reference signals and receiving (540) channel feedback data derived by a mobile terminal (14) from the reference signals. The reference signals are each assigned to a corresponding one of two or more antenna groupings, wherein at least a first one of the antenna groupings comprises two or more transmit antennas (150), and transmitted using at least one transmit antenna (150) from the corresponding antenna grouping. The method further includes determining (550) a first beam-forming vector for the first one of the antenna grouping and mapping (570) the one or more data streams to the transmit antennas (150) according to a final precoding matrix that depends on the channel feedback data and the first beam-forming vector, to obtain a weighted transmit signal for each of the antennas (150).