Abstract: Example embodiments provide a method for acknowledging switching of operation modes for a client device. The method comprises receiving, by a client device, a first indication comprising at least one of a first time duration, a period for repeating the first time duration or an indication of a list of at least two operation modes for the client device. The client device may be configured to receive a second indication comprising instructions for the dynamic switching of operation modes based on the list of at least two operation modes. The client device may be further configured to indicate the selected operation mode to a network device. Devices, methods, and computer programs are disclosed.

Abstract: Devices, methods and computer programs for client device operation mode indication are disclosed. A client device obtains a first indication indicating at least a time duration and at least a first period for repeating the time duration. A downlink control information, DCI, received within the indicated time duration includes a second indication indicating a second operation mode of the client device, and the second indication is not included when the DCI is received outside of the indicated time duration. In response to receiving, at the client device, the DCI from a network node device within the indicated time duration, the client device determines the second operation mode of the client device based on the received second indication, and applies the determined second operation mode of the client device.

Abstract: A method and a device for adapting a buffer of a terminal are provided, said method comprising the steps of (i) a network provides data to the terminal; and (ii) the terminal adapts its buffer based on the data provided. Furthermore, a communication system comprising such a device is provided.