Selective notification of DRX parameter

A method, comprising, in a user equipment (UE):

• determining a first discontinuous reception (DRX) cycle length proposed by the UE;
• determining a second DRX cycle length being broadcast by a long term evolution based (LTE-based) evolved node B (eNB) in a cell in which the UE operates;
• determining whether a third DRX cycle length is already configured in a LTE-based mobility management entity (MME);
• if the third DRX cycle length is already configured, determining to skip a tracking area update (TAU) procedure to configure a DRX cycle in the MME and determining to operate according to the second DRX cycle length being broadcast by the eNB, if the second DRX cycle length being broadcast by the eNB is less than or equal to the lesser of the first DRX cycle length and the third DRX cycle length, and to initiate the TAU procedure if the second DRX cycle length being broadcast by the eNB is not less than or equal to the lesser of the first DRX cycle length and the third DRX cycle length, and to initiate the TAU procedure if the second DRX cycle length being broadcast by the eNB is greater than the lesser of the first DRX cycle length and the third DRX cycle length;
• and
• if the third DRX cycle length is not already configured, determining to skip the TAU procedure to configure the DRX cycle in the MME and determining to operate according to the second DRX cycle length being broadcast by the eNB, if the second DRX cycle length is less than or equal to the first DRX cycle length, and to initiate the TAU procedure if the second DRX cycle length is greater than the first DRX cycle length.

A method, comprising, in a user equipment (UE):

• determining a first discontinuous reception (DRX) cycle length proposed by the UE;
• determining a second DRX cycle length being broadcast by a long term evolution based (LTE-based) evolved node B (eNB) in a cell in which the UE operates;
• determining a third DRX cycle length configured in a LTE-based mobility management entity (MME);
• and
• making a decision to skip a tracking area update (TAU) procedure to update a DRX cycle in the MME and determining to operate according to the second DRX cycle length being broadcast by the eNB, if the second DRX cycle length is less than or equal to the lesser of the first DRX cycle length and the third DRX cycle length, and a decision to initiate the TAU procedure if the second DRX cycle length is greater than the lesser of the first DRX cycle length and the third DRX cycle length.