Abstract:
A radio device (100) detects a trigger event, which may for example correspond to receiving a paging message (401). In response to the trigger event, the radio device (100) monitors radio channel quality experienced by the radio device (100). In response to a condition based on the monitored radio channel quality channel being met, the radio device triggers a data transfer with the cellular network.
Abstract:
A method, UE and base station for symbol construction or symbol generation for a Listen-Before-Talk based system, and a method and an apparatus of processing a received signal in a listen-before-talk (LBT) system are provided. According to one aspect, a method in a UE is provided for constructing a single carrier-frequency division multiple access, SC-FDMA, subframe for listen-before-talk, LBT, wireless communication. The method includes performing channel coding and rate matching of an input signal to produce a number of channel coded rate matched bits based on a number of modulation symbols pruned from a time signal to provide an LBT interval between data transmissions. The method further includes pruning the number of modulation symbols from the time signal to provide the LBT interval. The method also includes constructing the subframe with the LBT interval and the channel coded rate matched bits.
Abstract:
It is possible to reduce overhead when dynamically establishing an air interface configuration by communicating a modification instruction along with an index associated with a predefine air interface configuration. The modification instruction identifies a modification to one or more parameters of the predefined air interface configuration associated with the index. Together, the index and the modification indication specify a modified air interface configuration that is different than any of the candidate air interface configurations predefined for the network. The modification instruction allows networks to achieve similar degrees of flexibility while using substantially fewer predefined air interface configurations, which in turn permits the index associated with the selected air interface configuration to be signaled using fewer bits.
Abstract:
Techniques for contention window size (CWS) adaptation (CWSA) are discussed. One example apparatus can comprise a processor that can receive HARQ messages UEs in response to PDSCH transmissions in one or more reference subframes. The HARQ messages can comprise HARQ-ACK values that denote a HARQ-ACK state for a transport block associated with License Assisted Access (LAA) operation, wherein each of the HARQ-ACK states is one of a DTX state, an ACK state, a NACK state, or an "any" state. The processor can also; determine a metric value for each of the HARQ-ACK states; calculate a CWS adjustment metric based on the determined metric values; increase a CWS to a next higher allowed value when the CWS adjustment metric is greater than or equal to a threshold; and reset the CWS to a minimum allowed value when the CWS adjustment metric is less than the threshold.
Abstract:
The disclosure provides techniques for reducing interference caused by a first device to a second device receiving a satellite-based positioning signal. A device such as a user equipment (UE) or base station (eNB) determines a threshold transmission power for a transmission frequency of the device. The device also determines a signal strength of the satellite-based positioning system signal at the device. The device then controls a transmission property of the device based on the signal strength of the satellite-based positioning system signal when a transmission power of the device at the transmission frequency satisfies the threshold. The device may also determine that reception of the satellite-based positioning system signal by the second device is likely to be affected by a transmission from the device at a transmission power that satisfies the threshold and control the transmission property when reception of the satellite-based positioning system signal is likely to be affected.
Abstract:
The invention relates to methods and apparatuses implementing a novel three-phase closed-loop CSI feedback scheme, in which receiver stations exchange local channel state information for optimal feedback design. One or more transmission stations transmit a sounding signal to a group of receiver stations via a channel using an antenna array, so as to enable the receiver stations to obtain local channel state information representing the instantaneous channel state. The channel state information of the receiver stations is shared so that at least one master station has the global channel state and can obtain based on the knowledge of the instantaneous global channel state and on some given optimization criterion an optimum feedback on the channel that allows one or more of the transmitting stations to select a transmission scheme for transmitting signals to the receiver stations. The optimized feedback is sent back to one or more of the transmission stations.
Abstract:
Certain embodiments herein relate to an interleaver based on usable tones of a resource allocation. The interleaver is selected according to the number of usable tones and may be selected for each resource allocation to accommodate the variance in usable tones. The selected codebit interleaver or symbol interleaver may be a block interleaver in which bits are sequentially read in row by row and read out column by column, such that any unfilled entries in the block interleaver are skipped.