Apparatus and Method to Reduce Interference between Frequency-Division Duplex and Time-Division Duplex Signals in a Communication System

• US 20130242821A1
• Filed: 11/17/2010
• Published: 09/19/2013
• Est. Priority Date: 11/17/2010
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Wei, Na, Gao, Chun Yan, Pirskanen, Juho
• Granted Patent: US 9,560,635 B2
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04B 7/2615 using hybrid frequency-time division multiple access [FDMA-TDMA]
• CPC Class Codes: H04W 72/04 Wireless resource allocation

Abstract

An apparatus, method and system to reduce interference between frequency-division duplex and time-division duplex signals in a communication system. In one embodiment, an apparatus includes a processor (520) and memory (550) including computer program code. The memory (550) and the computer program code are configured to, with the processor (520), cause the apparatus to allocate a time-division duplex carrier for a frequency-division duplex downlink signal for communication with a communication element, and employ the time-division duplex carrier with a truncated time duration for the frequency-division duplex down-link signal.

Claims

1-30. -30. (canceled)

31. An apparatus, comprising:

a processor; and

memory including computer program code,

said memory and said computer program code configured to, with said processor, cause said apparatus to perform at least the following;

allocate a time-division duplex carrier for a frequency-division duplex downlink signal for communication with a communication element; and

employ said time-division duplex carrier with a truncated time duration for said frequency-division duplex downlink signal.

32. The apparatus as recited in claim 31 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to generate a signal for said communication element to terminate reception in a complementary portion of said truncated time duration for said frequency-division duplex downlink signal.

33. The apparatus as recited in claim 31 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to allocate a simultaneous frequency-division duplex carrier as a primary component carrier for said communication element.

34. The apparatus as recited in claim 31 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to terminate transmission of said frequency-division duplex downlink signal during a time-division duplex uplink time duration on said time-division duplex carrier.

35. The apparatus as recited in claim 31 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to assign a time period to said communication element corresponding to a downlink pilot time slot in a complementary portion of said truncated time duration for said frequency-division duplex downlink signal.

36. The apparatus as recited in claim 31 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to configure said time-division duplex carrier for time-truncated frequency-division duplex downlink operation by radio resource signaling.

37. The apparatus as recited in claim 31 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to allocate said time-division duplex carrier as a secondary component carrier.

38. A method, comprising:

allocating a time-division duplex carrier for a frequency-division duplex downlink signal for communication with a communication element; and

employing said time-division duplex carrier with a truncated time duration for said frequency-division duplex downlink signal.

39. The method as recited in claim 38 further comprising generating a signal for said communication element to terminate reception in a complementary portion of said truncated time duration for said frequency-division duplex downlink signal.

40. The method as recited in claim 38 further comprising allocating a simultaneous frequency-division duplex carrier as a primary component carrier for said communication element.

41. The method as recited in claim 38 further comprising terminating transmission of said frequency-division duplex downlink signal during a time-division duplex uplink time duration on said time-division duplex carrier.

42. An apparatus, comprising:

a processor; and

memory including computer program code,

said memory and said computer program code configured to, with said processor, cause said apparatus to perform at least the following;

receive an allocation for a time-division duplex carrier for a frequency-division duplex downlink signal with a truncated time duration; and

receive said frequency-division duplex downlink signal with said truncated time duration.

43. The apparatus as recited in claim 42 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to terminate reception in a complementary portion of said truncated time duration for said frequency-division duplex downlink signal.

44. The apparatus as recited in claim 42 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to receive an allocation of a simultaneous frequency-division duplex carrier as a primary component carrier.

45. The apparatus as recited in claim 42 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to terminate reception of said frequency-division duplex downlink signal during a time-division duplex uplink time duration on said time-division duplex carrier.

46. The apparatus as recited in claim 42 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to receive an assignment of a time period corresponding to a downlink pilot time slot in a complementary portion of said truncated time duration for said frequency-division duplex downlink signal.

47. The apparatus as recited in claim 42 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to receive a configuration of said time-division duplex carrier for time-truncated frequency-division duplex downlink operation by radio resource signaling.

48. The apparatus as recited in claim 42 wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to receive said allocation for said time-division duplex carrier as a secondary component carrier.

49. A computer program product comprising a program code stored in a computer readable medium configured to:

receive an allocation for a time-division duplex carrier for a frequency-division duplex downlink signal with a truncated time duration; and

receive said frequency-division duplex downlink signal with said truncated time duration.

50. A method, comprising:

receiving an allocation for a time-division duplex carrier for a frequency-division duplex downlink signal with a truncated time duration; and

receiving said frequency-division duplex downlink signal with said truncated time duration.

51. The method as recited in claim 50 further comprising terminating reception in a complementary portion of said truncated time duration for said frequency-division duplex downlink signal.

52. The method as recited in claim 50 further comprising receiving an allocation of a simultaneous frequency-division duplex carrier as a primary component carrier.

53. The method as recited in claim 50 further comprising terminating reception of said frequency-division duplex downlink signal during a time-division duplex uplink time duration on said time-division duplex carrier.