METHOD FOR FEATURE ACTIVATION OF MACHINE TYPE COMMUNICATION AND MTC DEVICE THEREOF

1 . A method for feature activation in Machine Type Communication MTC, comprising:

transmitting, by a MTC device, a feature activation request for a feature to a Mobility Management Entity MME;

checking, by the MME, whether the MTC device has subscribed to the feature;

if the MTC device has subscribed to the feature, permitting, by the MME, the feature activation request, and transmitting, by the MME, a feature state updating request to a Home Subscriber Server HSS to update feature state of the MTC device;

transmitting, by the HSS, a feature state updating response to the MME;

transmitting, by the MME, a state change message to a Base Station BS;

performing, by the BS, radio access network optimization, the MTC device then entering into a feature activated state; and

if the MTC device has not subscribed to the feature, transmitting, by the MME, a response message indicating refusal of the activation request, the MTC device remaining in a feature deactivated state.

2 . The method of claim 1 , wherein if the MTC device has not subscribed to the feature, a subscription request is transmitted from the MME to the HSS, and the HSS inquires a MTC server about whether to perform a feature subscription.

3 . The method of claim 1 , wherein transmitting, by an MTC device, a feature activation request for a feature to a MME comprises:

transmitting, by the MTC device, the feature activation request to the BS by using a non-access layer signaling, the feature activation request being then transmitted by the BS to the MME; or

transmitting, by the MTC device, the feature activation request to the BS by using a Radio Resource Control (RRC) message, the feature activation request being then transmitted by the BS to the MME.

4 . (canceled)

5 . The method of claim 1 , wherein transmitting, by an MTC device, a feature activation request for a feature to a MME comprises transmitting a predefined parameter to the MME.

6 . The method of claim 3 , wherein the feature comprises an Extra Low Power Consumption feature, the feature state comprises an Extra Low Power Consumption feature state, and the radio access network optimization comprises Radio Resource Control (RRC) connection reconfiguration; or wherein the feature comprises a Priority Alarm feature, and the feature state comprises a Priority Alarm feature state.

7 . (canceled)

8 . The method of claim 5 , wherein the feature comprises an Extra Low Power Consumption feature, the feature state comprises an Extra Low Power Consumption feature state, the MTC device operates in a Discontinuous Reception (DRX) state when the feature state is the Extra Low Power Consumption feature state, and the predefined parameter is a predefined UE specific DRX cycle.

9 . The method of claim 6 , wherein after the radio access network optimization, the MTC device operates in a Discontinuous Reception (DRX) state when the feature state is the Extra Low Power Consumption feature state, and DRX cycle is a UE specific DRX cycle.

10 . A method for feature deactivation in Machine Type Communication MTC, comprising:

transmitting, by a MTC device, a feature deactivation request for a feature to a Mobility Management Entity (MME);

permitting, by the MME, the feature activation request, and transmitting, by the MME, a feature state updating request to a Home Subscriber Server HSS to update feature state of the MTC device;

transmitting, by the HSS, a feature state updating response to the MME;

transmitting, by the MME, a state change message to a Base Station BS; and

performing, by the BS, radio access network optimization, the MTC device entering into a feature deactivated state.

11 . The method of claim 10 , wherein transmitting, by an MTC device, a feature deactivation request for a feature to an MME comprises:

transmitting, by the MTC device, the feature deactivation request to the BS by using a non-access layer signaling, the feature deactivation request being then transmitted by the BS to the MME; or transmitting, by the MTC device, the feature deactivation request to the BS by using a Radio Resource Control (RRC) message, the feature deactivation request being then transmitted by the BS to the MME.

12 . (canceled)

13 . The method of claim 10 , wherein transmitting, by an MTC device, a feature deactivation request for a feature to an MME comprises transmitting a predefined parameter to the MME.

14 . The method of claim 11 , wherein the feature comprises an Extra Low Power Consumption feature, the feature state comprises an Extra Low Power Consumption feature state, and the radio access network optimization comprises Radio Resource Control (RRC) connection reconfiguration; or wherein the feature comprises a Priority Alarm feature, and the feature state comprises a Priority Alarm feature state.

15 . (canceled)

16 . The method of claim 13 , wherein the feature comprises an Extra Low Power Consumption feature, the feature state comprises an Extra Low Power Consumption feature state, the MTC device operates in a Discontinuous Reception (DRX) state when it exits the Extra Low Power Consumption feature state, and the predefined parameter is the smaller value of a predefined UE specific DRX cycle and a system default cycle.

17 . The method of claim 14 , wherein after the radio access network optimization, the MTC device operates in a Discontinuous Reception (DRX) state when the feature state is the Extra Low Power Consumption feature state, and DRX cycle is the smaller value of a UE specific DRX cycle and a system default cycle.

18 . A Machine Type Communication (MTC) device comprising:

first transmitting means configured to transmit a feature activation request;

second transmitting means configured to transmit a feature deactivation request;

receiving means configured to receive a feature configuration message;

feature activation means configured to activate a feature such that the MTC device operates in a feature activated state when the received feature configuration message indicates permission of feature activation; otherwise, to keep the MTC device in a feature deactivated state when the received feature configuration message indicates refusal of feature activation; and

feature deactivation means configured to deactivate a feature such that the MTC device operates in a feature deactivated state when the received feature configuration message indicates permission of feature deactivation; otherwise, to keep the MTC device in a feature activated state when the received feature configuration message indicates refusal of feature deactivation.

19 . The MTC device of claim 18 , wherein

the first transmitting means is configured to transmit an Extra Low Power Consumption feature activation request;

the second transmitting means is configured to transmit an Extra Low Power Consumption feature deactivation request;

the receiving means is configured to receive an Extra Low Power Consumption feature configuration message;

the feature activation means is configured to activate an Extra Low Power Consumption feature such that the MTC device operates in an Extra Low Power Consumption feature activated state when the received Extra Low Power Consumption feature configuration message indicates permission of Extra Low Power Consumption feature activation; otherwise, to keep the MTC device in an Extra Low Power Consumption feature deactivated state when the received feature configuration message indicates refusal of Extra Low Power Consumption feature activation; and

the feature deactivation means is configured to deactivate an Extra Low Power Consumption feature such that the MTC device operates in an Extra Low Power Consumption feature deactivated state when the received Extra Low Power Consumption feature configuration message indicates permission of Extra Low Power Consumption feature deactivation; otherwise, to keep the MTC device in an Extra Low Power Consumption feature activated state when the received Extra Low Power Consumption feature configuration message indicates refusal of Extra Low Power Consumption feature deactivation,

wherein the MTC device further comprises Discontinuous Reception (DR)( )cycle setting means configured to set a UE specific DRX cycle as an actual cycle value for the DRX when the MTC device operates in the Extra Low Power Consumption feature activated state, and to set the smaller value of the UE specific DRX cycle and a system default cycle as the actual cycle value for the DRX when the MTC device operates in the Extra Low Power Consumption feature deactivated state; or

the first transmitting means is configured to transmit a Priority Alarm feature activation request;

the second transmitting means is configured to transmit a Priority Alarm feature deactivation request;

the receiving means is configured to receive a Priority Alarm feature configuration message;

the feature activation means is configured to activate a Priority Alarm feature such that the MTC device operates in a Priority Alarm feature activated state when the received Priority Alarm feature configuration message indicates permission of Priority Alarm feature activation; otherwise, to keep the MTC device in a Priority Alarm feature deactivated state when the received Priority Alarm feature configuration message indicates refusal of Priority Alarm feature activation; and

the feature deactivation means is configured to deactivate a Priority Alarm feature such that the MTC device operates in a Priority Alarm feature deactivated state when the received Priority Alarm feature configuration message indicates permission of Priority Alarm feature deactivation; otherwise, to keep the MTC device in a Priority Alarm feature activated state when the received Priority Alarm feature configuration message indicates refusal of Priority Alarm feature deactivation.

20 . (canceled)