Methods and arrangements for a mobile communications network

A method in a User Equipment (UE) for activating a radio resource reconfiguration in a the UE and in a radio base station, wherein the UE being subject to the reconfiguration is identifiable by a first UE identity, and wherein the method comprises:

• receiving a reconfiguration message indicating a new configuration to be used by said UE, wherein the reconfiguration message comprises a second UE identity for said UE and the second UE identity is associated with said new configuration;
• activating the new configuration;
• and
• indicating to the radio base station that the UE is identifiable by the second UE identity, wherein the indication comprises a response to a scheduling command that was sent to the UE using the second UE identity;
• wherein the first UE identity is a first Radio Network Temporary Identifier (RNTI), the first UE identity associated with an old configuration used for communication between the radio base station and the UE prior to activating the new configuration;
• and
• wherein the second UE identity is a second RNTI.

A radio base station for activating a radio resource reconfiguration in a User Equipment (UE) and in the radio base station, wherein the UE being subject to the reconfiguration is identifiable by a first UE identity, said radio base station comprising:

• a transmitter configured for sending a reconfiguration message indicating a new configuration to be used by said UE, wherein the reconfiguration message comprises a second UE identity for said UE and the second UE identity is associated with said new configuration;
• a processing circuit configured for activating the new configuration;
• a receiver configured for receiving an indication that the UE is identifiable by the second UE identity, wherein the indication comprises a response to a scheduling command that was sent to the UE using the second UE identity;
• and
• the processing circuit further configured for determining that the UE is ready to start transmission or reception with use the new configuration for communication with the radio base station when the indication that the UE is identifiable by the second UE identity is received;
• wherein the first UE identity is a first Radio Network Temporary Identifier (RNTI);
• and
• wherein the second UE identity is a second RNTI.

A User Equipment (UE) for activating a radio resource reconfiguration in a the UE and in a radio base station, wherein the UE being subject to the reconfiguration is identifiable by a first UE identity, said UE comprising:

• a receiver configured for receiving a reconfiguration message indicating a new configuration to be used by said UE, wherein the reconfiguration message comprises a second UE identity for said UE and the second UE identity is associated with said new configuration;
• a processing circuit configured for activating the new configuration;
• a transmitter configured for indicating to the radio base station that the UE is identifiable by the second UE identity, wherein the indication comprises a response to a scheduling command that was sent to the UE using the second UE identity;
• wherein the first UE identity is a first Radio Network Temporary Identifier (RNTI), the first UE identity associated with an old configuration used for communication between the radio base station and the UE prior to activating the new configuration;
• and
• wherein the second UE identity is a second RNTI.

A method in a radio base station for activating a radio resource reconfiguration in a User Equipment (UE) and in the radio base station, wherein the UE being subject to the reconfiguration is identifiable by a first UE identity, and wherein the method comprises:

• sending a reconfiguration message indicating a new configuration to be used by the UE, wherein the reconfiguration message includes a second UE identity for the UE and the second UE identity is associated with the new configuration, and wherein the reconfiguration message comprises a request for the UE to perform a UE initiated procedure associated with the reconfiguration;
• activating the new configuration;
• detecting the UE has initiated the UE initiated procedure associated with the reconfiguration;
• and
• determining that the UE is ready to use the new configuration based on detecting that the UE has initiated the UE initiated procedure associated with the reconfiguration,
• wherein the first UE identity is a first Radio Network Temporary Identifier (RNTI), the first UE identity associated with an old configuration used for communication between the radio base station and the UE prior to activating the new configuration;
• and
• wherein the second UE identity is a second RNTI.

A method in a User Equipment (UE) for activating a radio resource reconfiguration in the UE, wherein the UE is identifiable by a first UE identity, and wherein the method comprises:

• receiving, from a radio base station, a reconfiguration message indicating a new configuration to be used by the UE, wherein the reconfiguration message includes a second UE identity for the UE and the second UE identity is associated with the new configuration, and wherein the reconfiguration message comprises a request for the UE to perform a UE initiated procedure associated with the reconfiguration;
• activating the new configuration;
• and
• indicating to the radio base station that the UE is identifiable by the second UE identity by initiating the UE initiated procedure associated with the reconfiguration;
• wherein the first UE identity is a first Radio Network Temporary Identifier (RNTI), the first UE identity associated with an old configuration used for communication between the radio base station and the UE prior to activating the new configuration;
• and
• wherein the second UE identity is a second RNTI.

A radio base station for activating a radio resource reconfiguration in a User Equipment (UE) and in the radio base station, wherein the UE being subject to the reconfiguration is identifiable by a first UE identity, the radio base station comprising:

• a transmitter configured for sending a reconfiguration message indicating a new configuration to be used by the UE, wherein the reconfiguration message comprises a second UE identity for the UE and the second UE identity is associated with the new configuration, and wherein the reconfiguration message comprises a request for the UE to perform a UE initiated procedure associated with the reconfiguration;
• a processing circuit configured for activating the new configuration;
• a receiver configured for detecting that the UE has initiated the UE initiated procedure associated with the reconfiguration;
• and
• the processing circuit further configured for determining that the UE is ready to use the new configuration based on the receiver detecting that the UE has initiated the UE initiated procedure;
• wherein the first UE identity is a first Radio Network Temporary Identifier (RNTI), the first UE identity associated with an old configuration used for communication between the radio base station and the UE prior to activating the new configuration;
• and
• wherein the second UE identity is a second RNTI.

A User Equipment (UE) for activating a radio resource reconfiguration in the UE, wherein the UE is identifiable by a first UE identity, the UE comprising:

• a receiver configured for receiving, from a radio base station, a reconfiguration message indicating a new configuration to be used by the UE, wherein the reconfiguration message includes a second UE identity for the UE and the second UE identity is associated with the new configuration, and wherein the reconfiguration message comprises a request for the UE to perform a UE initiated procedure associated with the reconfiguration;
• a processing circuit configured for activating the new configuration;
• and
• a transmitter configured for indicating to the radio base station that the UE is identifiable by the second UE identity by initiating the UE initiated procedure associated with the reconfiguration;
• wherein the first UE identity is a first Radio Network Temporary Identifier (RNTI), the first UE identity associated with an old configuration used for communication between the radio base station and the UE prior to activating the new configuration;
• and
• wherein the second UE identity is a second RNTI.