Method for inter-cell interference coordination in wireless communication system, and apparatus therefor

• US 10,880,030 B2
• Filed: 06/15/2017
• Issued: 12/29/2020
• Est. Priority Date: 06/15/2016
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Jonghyun, Seo, Hanbyul, Yi, Yunjung
• Primary Examiner(s): Nguyen, Phuongchau Ba
• Application Number:
  US16/310,298
• Publication Number:
  US 20190327012A1
• Time in Patent Office: 1,293 Days
• Field of Search: 370329, 370336, 370330, 370221, 370241, 370328, 370338, 370478, 370480
• CPC Class Codes: H04B 17/336 Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 11/0053 using co-ordinated multipoint transmission/reception co-ordinated antenna or beam-forming aspects H04B7/022
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• 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 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 92/20 between access points

Abstract

The method for inter-cell interference coordination of user equipment in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving service type information from a first evolved-NodeB (eNB); and relaying the service type information to a second eNB neighboring the first eNB, wherein the service type information comprises information about a service type to be provided by the first eNB, and may be information requesting protection of a specific resource region allocated for the service type.

Claims

1. A method for a user equipment (UE) to support an inter-cell interference coordination (ICIC) in a wireless communication system, the method comprising:

receiving service type information from a first evolved-NodeB (eNB); and

relaying the service type information to a second eNB adjacent to the first eNB,

wherein the service type information comprises information regarding a service type to be provided by the first eNB and is information requesting protection for a specific resource region allocated for the service type,

wherein the service type information is relayed based on UL transmission for the first eNB, and

wherein the UL transmission is performed based on a specific reference sequence configuration previously regulated between the first eNB and the second eNB.

2. The method of claim 1,

wherein the service type information comprises at least one of (i) a service type ID for identifying the service type, (ii) a required signal to interference plus noise ratio (SINR) level for providing the service type, (iii) a required reliability level, or (iv) a required latency level.

3. The method of claim 1,

wherein the second eNB protects the specific resource region by stopping scheduling for the specific resource region based on the service type information.

4. The method of claim 3,

wherein the specific resource region corresponds to a resource region previously allocated for the service type or corresponds to a resource region indicated by the first eNB.

5. The method of claim 1, further comprising:

receiving an uplink (UL) grant for the UL transmission of the service type information from the first eNB; and

receiving a downlink (DL) grant for DL reception of the service type information from the first eNB.

6. The method of claim 5,

wherein receiving the service type information comprises obtaining the service type by decoding DL data received from the first eNB based on the DL grant, and

wherein relaying the service type information comprises performing the UL transmission based on the UL grant.

7. The method of claim 6,

wherein the UL grant is limited to be transmitted only in at least one of (i) a previously configured search space, (ii) a previously configured subframe, (iii) a previously configured control channel, or (iv) a previously configured DCI format.

8. The method of claim 7,

wherein the previously configured search space is a common search space, or

wherein the previously configured subframe is a non-multicast-broadcast single-frequency network (MBSFN) subframe, or

wherein the previously configured DCI format is a DCI format 0.

9. The method of claim 7,

wherein the UL grant is masked with a radio network temporary identifier (RNTI) for indicating a previously configured UL grant for UL transmission of the service type information, or

wherein the UL grant comprises an indicator for indicating the previously configured UL grant.

10. The method of claim 6,

wherein the UL grant and the DL grant are received through a single special UL/DL grant in which a function of the UL grant and a function of the DL grant have been integrated.

11. The method of claim 6,

wherein the UL grant and the DL grant are transmitted in an identical subframe or transmitted in associated subframes, respectively.

12. The method of claim 11, further comprising receiving an indicator indicating that the UL grant and the DL grant have been associated.

13. The method of claim 1, further comprising:

transmitting, to the second eNB, at least one of (i) numerology information for the specific resource region, iii) reference signal received power (RSRP) information measured with respect to at least one of the first eNB or second eNB, or (iii) guard band information to be included in the specific resource region in addition to the service type information.

14. A user equipment (UE) configured to support an inter-cell interference coordination (ICIC) in a wireless communication system, the user equipment comprising:

a radio frequency (RF) unit;

at least one processor; and

at least one computer memory operably connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising;

receiving service type information from a first evolved-NodeB (eNB); and

relaying the service type information to a second eNB adjacent to the first eNB,

wherein the service type information comprises information regarding a service type to be provided by the first eNB and is information requesting protection for a specific resource region allocated for the service type,

wherein the service type information is relayed based on UL transmission for the first eNB, and

wherein the UL transmission is performed based on a specific reference sequence configuration previously regulated between the first eNB and the second eNB.

15. The UE of claim 14,

wherein the service type information comprises at least one of (i) a service type ID for identifying the service type, (ii) a required signal to interference plus noise ratio (SINR) level for providing the service type, (iii) a required reliability level, or (iv) a required latency level.

16. The UE of claim 14,

wherein the second eNB protects the specific resource region by stopping scheduling for the specific resource region based on the service type information.

17. The UE of claim 16,

wherein the specific resource region corresponds to a resource region previously allocated for the service type or corresponds to a resource region indicated by the first eNB.

18. The UE of claim 14, wherein the operations further comprise:

receiving an uplink (UL) grant for the UL transmission of the service type information from the first eNB; and

receiving a downlink (DL) grant for DL reception of the service type information from the first eNB.

19. The UE of claim 18,

wherein receiving the service type information comprises obtaining the service type by decoding DL data received from the first eNB based on the DL grant, and

wherein relaying the service type information comprises performing the UL transmission based on the UL grant.