Generating interference pattern for controlling inter-cell interference and method for signaling therefor
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| Titel: | Generating interference pattern for controlling inter-cell interference and method for signaling therefor |
|---|---|
| Patent Number: | 10193,647 |
| Publikationsdatum: | January 29, 2019 |
| Appl. No: | 15/519517 |
| Application Filed: | October 27, 2014 |
| Abstract: | The present invention relates to generating an interference pattern for controlling inter-cell interference, a method for signaling therefor, and an apparatus utilizing the method. The method for signaling an interference pattern according to the present invention may comprise the steps of: determining the length and cyclic shift offset for a first interference pattern to be allocated to a set reference resource from among interference pattern sets; generating a cell-specific sequence to which the cyclic shift offset of the first interference pattern has been applied; and allocating the first interference pattern and cell-specific sequence to a resource and transmitting same. |
| Inventors: | LG ELECTRONICS INC. (Seoul, KR) |
| Assignees: | LG ELECTRONICS INC. (Seoul, KR) |
| Claim: | 1. A method of transmitting, by a base station supported by a reference cell, a demodulation pilot signal for controlling inter-cell interference, the method comprising: determining a pattern length of a first interference pattern and a cyclic shift offset, wherein the first interference pattern is included in an interference pattern set and is allocated to a first time resource of a predetermined reference resource, and wherein the cyclic shift offset is used for distinguishing each interference pattern in the interference pattern set; generating a cell-specific sequence related with a demodulation pilot signal in which a cyclic shift offset for the first interference pattern is applied, wherein a pattern of the demodulation pilot signal is determined based on the pattern length of the first interference pattern and a number of frequency domain resources that are used for the demodulation pilot signal; transmitting the demodulation pilot signal based on the cell-specific sequence through a resource allocated according to the pattern of the demodulation pilot signal, wherein the demodulation pilot signal is used for signaling the first interference pattern. |
| Claim: | 2. The method of claim 1 , wherein a different interference pattern is allocated to the predetermined reference resource for a neighboring cell. |
| Claim: | 3. The method of claim 1 , wherein a second interference pattern included in the interference pattern set is induced from the first interference pattern, and wherein the second interference pattern are allocated in a second time resource which is continuous from the first time resource. |
| Claim: | 4. The method of claim 1 , wherein the interference pattern set includes a plurality of interference patterns based on a predetermined order, and wherein the interference pattern set is repeated in a time domain of the predetermined reference resource. |
| Claim: | 5. The method of claim 1 , wherein the cell-specific sequence is generated based on a modification frequency of the first interference pattern and a transmission frequency of the cell-specific sequence. |
| Claim: | 6. An apparatus of transmitting a demodulation pilot signal for controlling inter-cell interference, the apparatus comprising: a transceiver that transmits and receives a signal; and a processor connected to the transceiver, wherein the processor is configured to: determine a pattern length of a first interference pattern and a cyclic shift offset, wherein the first interference pattern is included in an interference pattern set and is allocated to a first time resource of a predetermined reference resource, and wherein the cyclic shift offset is used for distinguishing each interference pattern in the interference pattern set; generate a cell-specific sequence related with a demodulation pilot signal in which a cyclic shift offset for the first interference pattern is applied, wherein a pattern of the demodulation pilot signal is determined based on the pattern length of the first interference pattern and a number of frequency domain resources that are used for the demodulation pilot signal; and transmit the demodulation pilot signal based on the cell-specific sequence through a resource allocated according to the pattern of the demodulation pilot signal, wherein the demodulation pilot signal is used for signaling the first interference pattern. |
| Patent References Cited: | 2014119861 August 2014 2014123387 August 2014 |
| Other References: | Intel Corporation, “On D2D discovery physical structure design,” 3GPP TSG-RAN WG1 #76, R1-140131, Feb. 2014, 12 pages. cited by applicant LG Electronics, “Discussion on Remaining Details of Resource Pool Configuration,” 3GPP TSG-RAN WG1 #78bis, R1-144021, Oct. 2014, 7 pages. cited by applicant LG Electronics, “Remaining issues for D2D control and data transmission,” 3GPP TSG-RAN WG1 #78bis, R1-144027, Oct. 2014, 7 pages. cited by applicant PCT International Application No. PCT/KR2014/010125, Written Opinion of the International Searching Authority dated Jul. 22, 2015, 4 pages. cited by applicant |
| Primary Examiner: | Abelson, Ronald B |
| Attorney, Agent or Firm: | Lee Hong Degerman Kang Waimey |
| Dokumentencode: | edspgr.10193647 |
| Datenbank: | USPTO Patent Grants |
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