Devices, methods, apparatuses, and computer readable media for alignment between user equipment and network

A system comprising:

• a terminal device, comprising:
• at least one processor;
• and
• at least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to:
• receive, from a network device serving the terminal device, a configuration for discontinuous transmission defining an active period and a non-active period of a cell associated with the network device, the configuration comprising a on-duration period, a periodicity, and a first start offset, the first start offset defining a start of the on-duration period of a connected discontinuous reception (c-DRX) of the terminal device that is used at least when the cell discontinuous transmission is deactivated;
• receive, from the network device, a first indication indicating that the configuration for the discontinuous transmission is activated, wherein the first indication comprises a second indication indicating the terminal device to compute a secondary start offset;
• receive, from the network device, a first configuration message comprising a distribution factor, corresponding to the configuration for the discontinuous transmission, for determining the secondary start offset, to make the on-duration period of a connected discontinuous reception at least partly overlap with the active period of an activated configuration for the discontinuous transmission when the first start offset results in the on-duration period not overlapping with the active period;
• based on the first start offset resulting in the on-duration period not overlapping with the active period, compute the secondary start offset based on a start offset of the activated configuration for the discontinuous transmission, the first start offset, the active period of the activated configuration for the discontinuous transmission, and the distribution factor corresponding to the activated configuration for the discontinuous transmission;
• select the secondary start offset for connected discontinuous reception of the terminal device during the activated discontinuous transmission of the cell;
• and
• upon determining that the configuration is deactivated based on a network load being too high, resume application of the first start offset.

A method comprising:

• receiving, from a network device serving the terminal device, a configuration for discontinuous transmission defining an active period and a non-active period of a cell associated with the network device, the configuration comprising a on-duration period, a periodicity, and a first start offset, the first start offset defining a start of the on-duration period of a connected discontinuous reception (c-DRX) of the terminal device that is used at least when the cell discontinuous transmission is deactivated;
• receiving, from the network device, a first indication indicating that the configuration for the discontinuous transmission is activated, wherein the first indication comprises a second indication indicating the terminal device to compute a secondary start offset;
• receiving, from the network device, a first configuration message comprising a distribution factor, corresponding to the configuration for the discontinuous transmission, for determining the secondary start offset, to make the on-duration period of a connected discontinuous reception at least partly overlap with the active period of an activated configuration for the discontinuous transmission when the first start offset results in the on-duration period not overlapping with the active period;
• based on the first start offset resulting in the on-duration period not overlapping with the active period, computing the secondary start offset based on a start offset of the activated configuration for the discontinuous transmission, the first start offset, the active period of the activated configuration for the discontinuous transmission, and the distribution factor corresponding to the activated configuration for the discontinuous transmission;
• selecting the secondary start offset for connected discontinuous reception of the terminal device during the activated discontinuous transmission of the cell;
• and
• upon determining that the configuration is deactivated based on a network load being too high, resuming application of the first start offset.