An efficient return channel spectrum utilization technique for communication systems supporting adaptive spread spectrum. Requests for bandwidth allocation using a spread factor are analyzed to determine if there are any channels capable of supporting the spread factor. The request is acknowledged if at least one channel is capable of supporting the request. Adjacent channels required to accommodate the requested spread factor are reserved, and additional bandwidth requests are allocated on non-reserved channels.

A system may include a software-defined radio (SDR) configured to communicate over multiple channels by using a beyond line of sight (BLOS) waveform. The SDR may be configured to transmit encrypted communications over some or all of the multiple channels to a satellite and on to at least one radio access node (RAN). The SDR may be configured to receive encrypted communications over some or all of the multiple channels from the at least one RAN via the satellite. At least one of the multiple channels may use a spreading factor greater than 256. The SDR may be configured to simultaneously transmit and receive encrypted communications over the multiple channels.

A system may include a software-defined radio (SDR) configured to communicate over multiple channels by using a beyond line of sight (BLOS) waveform. The SDR may be configured to transmit encrypted communications over some or all of the multiple channels to a satellite and on to at least one radio access node (RAN). The SDR may be configured to receive encrypted communications over some or all of the multiple channels from the at least one RAN via the satellite. At least one of the multiple channels may use a spreading factor greater than 256. The SDR may be configured to simultaneously transmit and receive encrypted communications over the multiple channels.

Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.

Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.

Provided is a method for processing triggering information of Machine Type Communication (MTC) devices. The method includes: an MTC-IWF receiving indication information sent by an MTC server, wherein the indication information is used for triggering multiple MTC devices at a same time; the MTC-IWF determining that at least two of the multiple MTC devices belong to different MTC groups; and the MTC-IWF forwarding triggering information to the multiple MTC devices. Through the technical solution, multiple MTC devices not belonging to the same MTC group can be triggered, thereby improving the efficiency of triggering the MTC devices.

The apparatus may be a base station. The apparatus processes a plurality of synchronization signals by performing time-division multiplexing (TDM) of at least one of a plurality of first synchronization signals of different types and at least one of the plurality of second synchronization signals of different types, the plurality of synchronization signals including the plurality of first synchronization signals and the plurality of second synchronization signals. The apparatus transmits the processed synchronization signals to a user equipment (UE).

The apparatus may be a base station. The apparatus processes a plurality of synchronization signals by performing time-division multiplexing (TDM) of at least one of a plurality of first synchronization signals of different types and at least one of the plurality of second synchronization signals of different types, the plurality of synchronization signals including the plurality of first synchronization signals and the plurality of second synchronization signals. The apparatus transmits the processed synchronization signals to a user equipment (UE).

The apparatus may be a base station. The apparatus processes a first group of synchronization signals. The apparatus processes a second group of synchronization signals. The apparatus performs a first transmission by transmitting the processed first group of the synchronization signals in a first synchronization subframe. The apparatus performs a second transmission by transmitting the processed second group of the synchronization signals in a second synchronization subframe.

The apparatus may be a base station. The apparatus processes a first group of synchronization signals. The apparatus processes a second group of synchronization signals. The apparatus performs a first transmission by transmitting the processed first group of the synchronization signals in a first synchronization subframe. The apparatus performs a second transmission by transmitting the processed second group of the synchronization signals in a second synchronization subframe.