Activation of a backup user terminal to transmit data to ensure qos

A method by a User Equipment (UE) operating as a main UE for data communication, the method comprising:

• receiving, from a network node, a first information indicating a first status of a backup mode of the UE as inactive,
• based on the first status of the backup mode of the UE being inactive, processing first data received from an upper layer of the UE and delivering the first data to a lower layer of the UE;
• receiving, from the network node, a second information indicating a second status of the backup mode of the UE as active, and
• based on the second status of the backup mode of the UE being changed to active, processing second data from the upper layer of the UE without delivering the second data to the lower layer of the UE.

A User Equipment (UE) operating as a backup UE for at least one main UE for data communication, the UE adapted to:

• receive, from a network node, information indicating a status of a backup mode of the UE as active;
• based on the status of the backup mode of the UE being active, process data received from an upper layer without delivering the data to a lower layer;
• if the status of the backup mode changes from active to inactive before an expiration of a timer associated with the backup mode of the UE, deliver the data to the lower layer;
• if the status of the backup mode does not change from active to inactive before the expiration of the timer associated with the backup mode of the UE, discard the data upon expiration of the timer.

A User Equipment (UE) operating as a main UE for data communication, the UE adapted to:

• receive, from a network node, a first information indicating a first status of a backup mode of the UE as inactive,
• based on the first status of the backup mode of the UE being inactive, process first data received from an upper layer of the UE and delivering the first data to a lower layer of the UE;
• receive, from the network node, a second information indicating a second status of the backup mode of the UE as active, and
• based on the second status of the backup mode of the UE being changed to active, process second data from the upper layer of the UE without delivering the second data to the lower layer of the UE.