Granted Patent B2

US 9,655,164 · App. 12/811,301 · Granted May 16, 2017

Abstract

Claims (82)

1. A method for enabling or disabling a carrier for a user equipment in a wireless network, the method comprising:

receiving, by the user equipment a first radio resource configuration (RRC) message, the first RRC message assigning a plurality of carriers of an evolved Node B, the first RRC message indicating a primary carrier and a plurality of secondary carriers from the plurality of carriers, wherein the primary carrier is used for control signaling related to at least one of the secondary carriers, the first RRC message further indicating a subset of the plurality of carriers as designated carriers, the remaining carriers being non-designated carriers;

receiving, by the user equipment a second RRC message, the second RRC message including Discontinuous Reception (DRX) configuration information for a designated carrier and an indication that a non-designated carrier is associated to the designated carrier, wherein the non-designated carrier is enabled based on the DRX configuration information for the associated designated carrier;

receiving, by the user equipment, a carrier enable or disable command medium access control (MAC) control element over a downlink shared channel, the MAC control element comprising a plurality of bit fields, each of said plurality of bit fields corresponding with a carrier of the plurality of secondary carriers, and indicating whether the carrier should be enabled or disabled;

transmitting, by the user equipment, an acknowledgment of the carrier enable or disable command MAC control element;

stopping, at the user equipment, from transmitting uplink control information corresponding to the carriers that are disabled by the MAC control element; and

stopping, at the user equipment, monitoring a physical downlink control channel (PDCCH) associated with the carriers that are disabled by the MAC control element.

2. The method of claim 1 , wherein the MAC control element comprises at least one of:

a single bit for designating whether to enable or disable a carrier;

a carrier identifier field to identify a carrier;

an action time for when the carrier should be enabled or disabled; and

a subframe within the radio frame with a subframe number equal to an action time.

3. The method of claim 2 , wherein the acknowledgment comprises a carrier identifier corresponding with the carrier identifier field from the MAC control element.

4. The method of claim 1 , wherein the MAC control element comprises at least one of:

an action time for when the carrier should be enabled or disabled; and

a subframe within the radio frame with a subframe number equal to an action time.

5. The method of claim 4 , wherein the acknowledgment comprises a plurality of bit fields corresponding with the plurality of bit fields in the MAC control element.

6. A user equipment comprising:

a communications subsystem, and

a processor;

wherein the communication subsystem and the processor are configured to:

receive a first radio resource configuration (RRC) message, the first RRC message assigning a plurality of carriers of an evolved Node B, the first RRC message indicating a primary carrier and a plurality of secondary carriers from the plurality of carriers, wherein the primary carrier is used for control signaling related to at least one of the secondary carriers, the first RRC message further indicating a subset of the plurality of carriers as designated carriers, the remaining carriers being non-designated carriers;

receive a second RRC message, the second RRC message including Discontinuous Reception (DRX) configuration information for a designated carrier and an indication that a non-designated carrier is associated to the designated carrier, wherein the non-designated carrier is enabled based on the DRX configuration information for the associated designated carrier;

receive a carrier enable or disable command medium access control (MAC) control element over a downlink shared channel, the MAC control element comprising a plurality of bit fields, each of said plurality of bit fields corresponding with a carrier of the plurality of secondary carriers, and indicating whether the carrier should be enabled or disabled;

transmit an acknowledgment of the carrier enable or disable command MAC control element;

stop transmitting uplink control information corresponding to the carriers that are disabled by the MAC control element; and

stop monitoring a physical downlink control channel (PDCCH) associated with the carriers that are disabled by the MAC control element.

7. The method of claim 1 , wherein transmitting the acknowledgment comprises using a hybrid automatic repeat request (HARQ) feedback.

8. The method of claim 1 , wherein transmitting the acknowledgment comprises using a carrier enable or disable acknowledgment medium access control (MAC) control element (CE).

9. The method of claim 1 , wherein receiving the carrier enable or disable command MAC control element comprises using a logical channel ID (LCID) value.

10. A method for enabling or disabling a carrier for a user equipment in a wireless network including an evolved node B (eNB), the method comprising:

transmitting, by the eNB, a first radio resource configuration (RRC) message, the first RRC message assigning a plurality of carriers of the eNB, the first RRC message indicating a primary carrier and a plurality of secondary carriers from the plurality of carriers, wherein the primary carrier is used for control signaling related to at least one of the secondary carriers, the first RRC message further indicating a subset of the plurality of carriers as designated carriers, the remaining carriers being non-designated carriers;

transmitting, by the eNB, a second RRC message, the second RRC message including Discontinuous Reception (DRX) configuration information for a designated carrier and an indication that a non-designated carrier is associated to the designated carrier, wherein the non-designated carrier is enabled based on the DRX configuration information for the associated designated carrier;

transmitting, by the eNB, a carrier enable or disable command medium access control (MAC) control element over a downlink shared channel, the MAC control element comprising a plurality of bit fields, each of said plurality of bit fields corresponding with a carrier of the plurality of secondary carriers, and indicating whether the carrier should be enabled or disabled; and

receiving, by the eNB, an acknowledgment of the carrier enable or disable command MAC control element;

wherein transmission of uplink control information corresponding to the carriers disabled by the MAC control element is stopped; and

wherein monitoring of a physical downlink control channel (PDCCH) associated with the carrier disabled by the MAC control element is stopped.

11. The method of claim 10 , wherein the carrier enable or disable command MAC control element includes a logical channel ID (LCID) value.

12. The method of claim 10 , wherein receiving the acknowledgment comprises using a hybrid automatic repeat request (HARQ) feedback.

13. An apparatus for a wireless network, the apparatus comprising:

a communications subsystem, and

a processor;

wherein the communication subsystem and the processor are configured to:

transmit a first radio resource configuration (RRC) message, the first RRC message assigning a plurality of carriers of the apparatus, the first RRC message indicating a primary carrier and a plurality of secondary carriers from the plurality of carriers, wherein the primary carrier is used for control signaling related to at least one of the secondary carriers, the first RRC message further indicating a subset of the plurality of carriers as designated carriers, the remaining carriers being non-designated carriers;

transmit a second RRC message, the second RRC message including Discontinuous Reception (DRX) configuration information for a designated carrier and an indication that a non-designated carrier is associated to the designated carrier, wherein the non-designated carrier is enabled based on the DRX configuration information for the associated designated carrier;

transmit a carrier enable or disable command medium access control (MAC) control element over a downlink shared channel, the MAC control element comprising a plurality of bit fields, each of said plurality of bit fields corresponding with a carrier of the plurality of secondary carriers, and indicating whether the carrier should be enabled or disabled; and

receive an acknowledgement of the carrier enable or disable command MAC control element;

wherein transmission of uplink control information corresponding to the carriers disabled by the MAC control element is stopped; and

wherein monitoring of a physical downlink control channel (PDCCH) associated with the carrier disabled by the MAC control element is stopped.

14. The method of claim 1 , wherein the assignment is received while the user equipment is in RRC_CONNECTED.

15. The method of claim 1 , wherein the wireless network is a Long Term Evolution (LTE) wireless network.

16. The method of claim 1 , wherein a position of a bit field in the MAC control element corresponds to the carrier identifier.

17. The user equipment of claim 6 , wherein the MAC control element comprises at least one of:

a single bit for designating whether to enable or disable a carrier;

a carrier identifier field to identify a carrier;

an action time for when the carrier should be enabled or disabled; and

a subframe within the radio frame with a subframe number equal to an action time.

18. The user equipment of claim 17 , wherein the acknowledgment comprises a carrier index corresponding with the carrier index field from the MAC control element.

19. The user equipment of claim 6 , wherein the MAC control element comprises at least one of:

an action time for when the carrier should be enabled or disabled; and

a subframe within the radio frame with a subframe number equal to an action time.

20. The user equipment of claim 19 , wherein the acknowledgment comprises a plurality of bit fields corresponding with the plurality of bit fields in the MAC control element.

21. The user equipment of claim 6 , wherein transmitting the acknowledgment comprises using a hybrid automatic repeat request (HARQ) feedback.

22. The user equipment of claim 6 , wherein transmitting the acknowledgment comprises using a carrier enable or disable acknowledgement medium access control (MAC) control element (CE).

23. The user equipment of claim 6 , wherein receiving the carrier enable or disable command MAC control element comprises using a logical channel ID (LCID) value.

24. The user equipment of claim 6 , wherein the assignment is received while the user equipment is in RRC_CONNECTED.

25. The user equipment of claim 6 , wherein the wireless network is a Long Term Evolution (LTE) wireless network.

26. The user equipment of claim 6 , wherein a position of a bit field in the MAC control element corresponds to the carrier identifier.

27. The user equipment of claim 6 , wherein the uplink transmissions are stopped prior to an action time.

28. The user equipment of claim 27 , wherein the communications subsystem and the processor are further configured to determine the action time based on a number of subframes after a subframe in which the MAC control element was received.

29. The method of claim 1 , wherein the uplink transmissions are stopped prior to an action time.

30. The method of claim 29 , further comprising determining the action time based on a number of subframes after a subframe in which the MAC control element was received.

31. The apparatus of claim 13 , wherein the carrier enable or disable command MAC control element includes a logical channel ID (LCID) value.

32. The apparatus of claim 13 , wherein receiving the acknowledgement comprises using a hybrid automatic repeat request (HARQ) feedback.

33. The apparatus of claim 13 , wherein the uplink transmissions are stopped prior to an action time.

34. The apparatus of claim 33 , wherein the communications subsystem and the processor are further configured to determine the action time based on a number of subframes after a subframe in which the MAC control element was transmitted.

35. The method of claim 10 , wherein the uplink transmissions are stopped prior to an action time.

36. The method of claim 35 , further comprising determining the action time based on a number of subframes after a subframe in which the MAC control element was transmitted.

37. The method of claim 1 wherein the first RRC message is the same as the second RRC message.

38. The user equipment of claim 6 wherein the first RRC message is the same as the second RRC message.

39. The method of claim 10 wherein the first RRC message is the same as the second RRC message.

40. The apparatus of claim 13 wherein the first RRC message is the same as the second RRC message.

Assignments (10)