COMMUNICATIONS SYSTEM

• US 20160029355A1
• Filed: 10/06/2015
• Published: 01/28/2016
• Est. Priority Date: 04/27/2009
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: AHLUWALIA, Jagdeep Singh, ARNOTT, Robert
• Granted Patent: US 9,888,464 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0087 when data requirements change
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A mobile communications system is proposed in which mobile communications devices are arranged to transmit signals to and to receive signals from a base station using one or a subset of available sub-bands, with the base station being configured to move the mobile communications devices between the sub-bands. An anchor sub-band is also provided on which idle mobile communications devices camp until they are moved to one or more other sub-bands in addition to or instead of the anchor sub-band.

Claims

1-25. -25. (canceled)

26. A mobile device, comprising:

a memory storing instructions; and

one or more hardware processors configured to execute the instructions to;

communicate with a base station over a plurality of component carriers, the plurality of component carriers including a primary component carrier and a secondary set of component carriers,

receive first control data from the base station,

monitor the secondary set of component carriers for a first time period indicated by the first control data, and

deactivate the monitoring of the secondary set of component carriers upon expiration of the first time period.

27. The mobile device of claim 26, wherein the secondary set of component carriers includes a single component carrier.

28. The mobile device of claim 26, wherein the primary component carrier is a plurality of component carriers.

29. The mobile device of claim 26, wherein the one or more hardware processors are further configured to execute the instructions to monitor, for the first time period, a physical downlink control channel on the secondary set of component carriers.

30. The mobile device of claim 26, wherein the one or more hardware processors are further configured to execute the instructions to receive the first control data on the primary component carrier.

31. The mobile device of claim 26, wherein the one or more hardware processors are further configured to execute the instructions to:

receive second control data from the base station, and

based on the second control data, switch from monitoring a first secondary component carrier of the secondary set of component carriers to a second secondary component carrier of the secondary set of component carriers.

32. The mobile device of claim 26, wherein the one or more hardware processors are further configured to:

receive second control data from the base station,

monitor a first secondary component carrier of the secondary set of component carriers for a first time period indicated by the first control data, and deactivate the monitoring of the first secondary component carrier upon expiration of the first time period, and

monitor a second secondary component carrier of the secondary set of component carriers for a second time period indicated by the second control data, and deactivate the monitoring of the second secondary component carrier upon expiration of the second time period.

33. A method of communication executed by a mobile device, the method comprising:

communicating with a base station over a plurality of component carriers, the plurality of component carriers including a primary component carrier and a secondary set of component carriers,

receiving first control data from the base station,

monitoring the secondary set of component carriers for a first time period indicated by the first control data, and

deactivating the monitoring of the secondary set of component carriers upon expiration of the first time period.

34. The method of claim 33, wherein the secondary set of component carriers includes a single component carrier.

35. The method of claim 33, wherein the primary component carrier is a plurality of component carriers.

36. The method of claim 33, further comprising monitoring, for the first time period, a physical downlink control channel on the secondary set of component carriers.

37. The method of claim 33, further comprising receiving the first control data on the primary component carrier.

38. The method of claim 33, further comprising:

receiving second control data from the base station, and

based on the second control data, switching from monitoring a first secondary component carrier of the secondary set of component carriers to a second secondary component carrier of the secondary set of component carriers.

39. The method of claim 33, further comprising:

receiving second control data from the base station,

monitoring a first secondary component carrier of the secondary set of component carriers for a first time period indicated by the first control data,

deactivating the monitoring of the first secondary component carrier upon expiration of the first time period,

monitoring a second secondary component carrier of the secondary set of component carriers for a second time period indicated by the second control data, and

deactivating the monitoring of the second secondary component carrier upon expiration of the second time period.

40. A base station, comprising:

a memory storing instructions; and

one or more hardware processors configured to execute the instructions to;

communicate with a mobile device over a plurality of component carriers, the plurality of component carriers including a primary component carrier and a secondary set of component carriers,

transmit first control data to the mobile device,

wherein the first control data instructs the mobile device to monitor the secondary set of component carriers for a first time period and to deactivate the monitoring of the secondary set of component carriers upon expiration of the first time period.

41. The base station of claim 40, wherein the secondary set of component carriers includes a single component carrier.

42. The base station of claim 40, wherein the primary component carrier is a plurality of component carriers.

43. The base station of claim 40, wherein the first control data enables the mobile device to monitor, for the first time period, a physical downlink control channel on the secondary set of component carriers.

44. The base station of claim 40, wherein the one or more hardware processors are further configured to execute the instructions to transmit the first control data on the primary component carrier.

45. The base station of claim 40, wherein the one or more hardware processors are further configured to execute the is instructions to:

transmit second control data to the mobile device instructing the mobile device to switch from monitoring a first secondary component carrier of the secondary set of component carriers to a second secondary component carrier of the secondary set of component carriers.

46. The base station of claim 40, wherein the one or more hardware processors are further configured to execute the instructions to:

transmit second control data to the mobile device instructing the mobile device to monitor a second secondary component carrier of the secondary set of component carriers for a second time period and to deactivate the monitoring of the second secondary component carrier upon expiration of the second time period,

wherein the first control data instructs the mobile device to monitor a first secondary component carrier of the secondary set of component carriers for the first time period and to deactivate the monitoring of the first secondary component carrier upon expiration of the first time period.