A user equipment (UE) may receive a first downlink signal, which may include a resource assignment having an indication of a first resource of a plurality of resources. The resource assignment may also have an indication of a number of resources of the plurality of resources. In addition, the plurality of resources may be consecutive resources in a sequence. Further, the first downlink signal may include an indication of a first time interval of a plurality of time intervals and a number of time intervals of the plurality of time intervals to which the resource assignment applies. Moreover, the plurality of time intervals may be consecutive time intervals. Additionally, the UE may receive at least one additional downlink signal over a downlink shared channel in the plurality of resources and in the plurality of time intervals. In an example, the first downlink signal may be received over a downlink signaling channel.

A wireless transmit/receive unit (WTRU) may receive a first transmission in a first band of a first Federal Communication Commission (FCC) spectral block using orthogonal frequency division multiplex (OFDM). The first transmission may include reconfiguration information. The WTRU may receive, in response to the reconfiguration information, a second transmission in a second band of a second FCC spectral block using OFDM. The WTRU may receive, based on a dynamic assignment, transmissions in the first band and the second band.

Embodiments herein describe wireless transmission techniques for mitigating interference between wirelessly controlled machines in a shared space. To mitigate interference, the machines may be assigned different channels within the same frequency band. However, if machines using the same channel in a frequency band receive each other's wireless signals, the wireless signals can interfere. To free up additional bandwidth, in one embodiment, the command signals are transmitted using a different frequency band than a heartbeat signal used to stop the machines in case of emergencies. In another embodiment, time multiplexing or directional antennas can be used to mitigate interference. In another example, antenna diversity and multiple-input-multiple output (MIMO) can be used to further focus the radiation pattern onto the desired machine while avoiding transmitting wireless signals to neighboring machines. In one embodiment, the machines may use dual-channels to transmit and receive duplicate data.

Embodiments herein describe wireless transmission techniques for mitigating interference between wirelessly controlled machines in a shared space. To mitigate interference, the machines may be assigned different channels within the same frequency band. However, if machines using the same channel in a frequency band receive each other's wireless signals, the wireless signals can interfere. To free up additional bandwidth, in one embodiment, the command signals are transmitted using a different frequency band than a heartbeat signal used to stop the machines in case of emergencies. In another embodiment, time multiplexing or directional antennas can be used to mitigate interference. In another example, antenna diversity and multiple-input-multiple output (MIMO) can be used to further focus the radiation pattern onto the desired machine while avoiding transmitting wireless signals to neighboring machines. In one embodiment, the machines may use dual-channels to transmit and receive duplicate data.

The apparatus may be an apparatus for wireless communication. The apparatus for wireless communication may include a processing system. The processing system may manage an antenna beam. The processing system may be configured to monitor a parameter of a signal and widen the antenna beam of the apparatus for wireless communication when the parameter falls below a threshold.

The apparatus may be an apparatus for wireless communication. The apparatus for wireless communication may include a processing system. The processing system may manage an antenna beam. The processing system may be configured to monitor a parameter of a signal and widen the antenna beam of the apparatus for wireless communication when the parameter falls below a threshold.

A communication method, a base station, user equipment, and a system are provided. The method includes: receiving uplink data that is sent by the user equipment in a specified multiple-access manner on a time-frequency resource corresponding to the specified multiple-access manner; and sending downlink data to the user equipment in a corresponding multiple-access manner on a time-frequency resource corresponding to the corresponding multiple-access manner, where the corresponding multiple-access manner is a multiple-access manner that is obtained by searching a at least two multiple-access manners according to a prestored correspondence and that is associated with the specified multiple-access manner. In this way, a problem that because one multiple-access manner is used in a same communications system, requirements of different user equipments cannot be met at the same time is resolved.

Methods and apparatuses are described for wireless communications. Cells may be grouped into a plurality of cell groups. A wireless device may transmit an uplink packet overlapping in time with a transmission of a random access preamble. Transmission power of the uplink packet may be adjusted based on an allowable transmission power and the transmission power of the random access preamble.

Methods, apparatuses, and systems are described for wireless communications. Cells may be grouped into a plurality of cell groups. A wireless device may determine a first transmission power for a first signal and a second transmission power for a second signal. Based on a calculated transmission power and an overlap of the signals, a power control mechanism may be employed.

Methods and apparatuses are described for wireless communications. Cells may be grouped into a plurality of cell groups. A wireless device may be configured to transmit a first signal via a first cell group that may overlap in time with a second signal via a second cell group. The wireless device may adjust a signal transmission power of at least one of the first signal and the second signal. Additionally or alternatively, the wireless device may drop at least one of the first signal and the second signal. Adjusting and/or dropping at least one of the first signal and the second signal may be based on the overlap in time of these signals satisfying a duration threshold and a total power to transmit the first signal and the second signal exceeding a power threshold.