REFERENCE SIGNAL FOR A COORDINATED MULTI-POINT NETWORK IMPLEMENTATION

• US 20160174235A1
• Filed: 02/10/2016
• Published: 06/16/2016
• Est. Priority Date: 02/12/2010
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Fong, Mo-Han, Yu, Dongsheng, XU, Hua, NOVAK, Robert, GUO, Shiguang, CAI, Zhijun, HEO, Youn Hyoung
• Granted Patent: US 9,888,484 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

A system and method of receiving a channel state information reference signal (CSI-RS) is presented. At a user equipment, a first CSI-RS transmitted from a base station is received. In some implementations, the first CSI-RS is transmitted at a first periodicity using a first set of antenna ports. At the user equipment, a second CSI-RS transmitted from the base station is received. In some implementations, the second CSI-RS is transmitted at a second periodicity using a second set of antenna ports. At least one of the first CSI-RS and the second CSI-RS is used to perform channel measurement.

Claims

1. -38. (canceled)

39. A method, comprising:

assigning, at a base station, a resource block (RB) group to a set of cells, the base station associated with a serving cell of a user equipment (UE);

receiving, from the UE, a measurement report identifying a set of interfering neighbor cells for the UE;

in response to determining that the set of interfering neighbor cells and the serving cell are within the set of cells, transmitting configuration information of the RB group to the UE; and

muting one or more resource elements (REs) within a data channel transmission to the UE based on the configuration information of the RB group.

40. The method of claim 39, further comprising performing the data channel transmission to the UE using REs within the RB group.

41. The method of claim 39, wherein the RB group includes at least one RB, and the configuration information includes information of the at least one RB in the RB group.

42. The method of claim 39, wherein the configuration information includes information of REs used for channel state information reference signals (CSI-RSs) of the set of cells excluding the serving cell.

43. The method of claim 42, wherein the muted one or more REs includes REs used for CSI-RSs of the set of cells excluding the serving cell.

44. The method of claim 42, wherein the UE decodes a CSI-RS of an interfering neighbor cell based on the configuration information, and the UE determines the muted one or more REs in the data channel transmission based on the configuration information.

45. The method of claim 39, wherein the configuration information is transmitted to the UE using at least one of a system information block (SIB) broadcast message or a dedicated radio resource control (RRC) message.

46. An apparatus, comprising:

a memory; and

at least one hardware processor communicatively coupled with the memory and configured to;

assign, at a base station, a resource block (RB) group to a set of cells, the base station associated with a serving cell of a user equipment (UE);

receive, from the UE, a measurement report identifying a set of interfering neighbor cells for the UE;

in response to determining that the set of interfering neighbor cells and the serving cell are within the set of cells, transmit configuration information of the RB group to the UE; and

mute one or more resource elements (REs) within a data channel transmission to the UE based on the configuration information of the RB group.

47. The apparatus of claim 46, wherein at least one hardware processor is further configured to perform the data channel transmission to the UE using REs within the RB group.

48. The apparatus of claim 46, wherein the RB group includes at least one RB, and the configuration information includes information of the at least one RB in the RB group.

49. The apparatus of claim 46, wherein the configuration information includes information of REs used for channel state information reference signals (CSI-RSs) of the set of cells excluding the serving cell.

50. The apparatus of claim 49, wherein the muted one or more REs includes REs used for CSI-RSs of the set of cells excluding the serving cell.

51. The apparatus of claim 49, wherein the UE decodes a CSI-RS of an interfering neighbor cell based on the configuration information, and the UE determines the muted one or more REs in the data channel transmission based on the configuration information.

52. The apparatus of claim 46, wherein the configuration information is transmitted to the UE using at least one of a system information block (SIB) broadcast message or a dedicated radio resource control (RRC) message.

53. A non-transitory computer-readable medium containing instructions which, when executed, cause a computing device to perform operations comprising:

assigning, at a base station, a resource block (RB) group to a set of cells, the base station associated with a serving cell of a user equipment (UE);

receiving, from the UE, a measurement report identifying a set of interfering neighbor cells for the UE;

in response to determining that the set of interfering neighbor cells and the serving cell are within the set of cells, transmitting configuration information of the RB group to the UE; and

muting one or more resource elements (REs) within a data channel transmission to the UE based on the configuration information of the RB group.

54. The non-transitory computer-readable medium of claim 53, wherein the operations further comprise performing the data channel transmission to the UE using REs within the RB group.

55. The non-transitory computer-readable medium of claim 53, wherein the RB group includes at least one RB, and the configuration information includes information of the at least one RB in the RB group.

56. The non-transitory computer-readable medium of claim 53, wherein the configuration information includes information of REs used for channel state information reference signals (CSI-RSs) of the set of cells excluding the serving cell.

57. The non-transitory computer-readable medium of claim 56, wherein the muted one or more REs includes REs used for CSI-RSs of the set of cells excluding the serving cell.

58. The non-transitory computer-readable medium of claim 53, wherein the configuration information is transmitted to the UE using at least one of a system information block (SIB) broadcast message or a dedicated radio resource control (RRC) message.