# US 11,122,589 B2 · Method and device for allocating PTRS to resource block in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,589 B2 - Document ID: US11122589B2 - Status: Granted - Kind: B2 - Application number: 16/613,726 - Filed: 2018-05-10 - Published: 2020-03-05 - Granted: 2021-09-14 - Earliest claimed: 2017-05-14 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Kilbom Lee; Jiwon Kang; Kijun Kim; Kyuseok Kim - Web page: https://patentgrep.com/patent/US11122589B2 ## CPC - H04L 5/0041: {Frequency-non-contiguous} - H04W 72/542: using measured or perceived quality - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04L 27/261: {Details of reference signals} - H04L 5/0023: {Time-frequency-space} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04L 25/0226: {sounding signals per se} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract According to an embodiment of the present specification, a method for transmitting, by a base station, a signal for eliminating phase noise by a terminal in an mmWave communication system may be provided. A method for transmitting a signal for eliminating phase noise may comprise the steps of: generating a PTRS; allocating the PTRS to one or more resource blocks included in a scheduled bandwidth; and transmitting the allocated PTRS, wherein an interval between the one or more resource blocks, to which the PTRs are allocated, is determined on the basis of the scheduled bandwidth. ## Claims ### Claim 1 A method of transmitting, by a base station, a signal for enabling a user equipment (UE) to eliminate phase noise in a millimeter wave (mmWave) communication system, the method comprising: generating a phase tracking reference signal (PTRS); allocating the PTRS to one or more resource blocks included in a scheduled bandwidth; and transmitting the allocated PTRS, wherein an interval between the one or more resource blocks to which the PTRS is allocated is determined based on the scheduled bandwidth, and wherein indices of the resource blocks to which the PTRS is allocated are shifted based on at least one of identification (ID) of the UE or a maximum number of shiftable resource blocks. ### Claim 2 (depends on 1) The method of claim 1, wherein the interval between the one or more resource blocks to which the PTRS is allocated is 1 based on the scheduled bandwidth less than a first threshold, one PTRS being allocated for each resource block, wherein the interval between the one or more resource blocks to which the PTRS is allocated is 2 based on the scheduled bandwidth more than or equal to the first threshold and less than a second threshold, one PTRS being allocated for every two resource blocks, and wherein the interval between the one or more resource blocks to which the PTRS is allocated is 4 based on the scheduled bandwidth more than the second threshold, one PTRS being allocated for every four resource blocks. ### Claim 3 (depends on 1) The method of claim 1, wherein a maximum number of PTRS subcarriers to which the PTRS is allocated is determined based on the scheduled bandwidth. ### Claim 4 (depends on 3) The method of claim 3, wherein based on the PTRS allocated based on the interval between the one or more resource blocks to which the PTRS is allocated and a number of the one or more resource blocks to which the PTRS is allocated more than the maximum number of PTRS subcarriers, the PTRS is not allocated to remaining resource blocks included in the scheduled bandwidth. ### Claim 5 (depends on 1) The method of claim 1, wherein the PTRS is allocated from a resource block with a low resource block index based on the interval between the one or more resource blocks to which the PTRS is allocated. ### Claim 6 (depends on 1) The method of claim 1, wherein the maximum number of shiftable resource blocks corresponds to the interval between the one or more resource blocks to which the PTRS is allocated. ### Claim 7 (depends on 1) The method of claim 1, wherein a number of one or more PTRS subcarriers to which PTRS is allocated is determined based on the scheduled bandwidth. ### Claim 8 (depends on 7) The method of claim 7, wherein resource block indices of the one or more resource blocks to which the PTRS is allocated are determined according to Equation A: i = ⌊ l ⁢ P L ⌋ + k , l = 0 , 1 , … ⁢ , L - 1 , [ Equation ⁢ ⁢ A ] where i denotes the indices of the resource blocks to which the PTRS is allocated, P denotes the scheduled bandwidth, L denotes the number of one or more PTRS subcarriers to which the PTRS is allocated, and k denotes an offset value. ### Claim 9 A base station for transmitting a signal for enabling a user equipment (UE) to eliminate phase noise in a millimeter wave (mmWave) communication system, the base station comprising: a receiver configured to receive a signal from an external device; a transmitter configured to transmit a signal to an external device; and a processor configured to control the receiver and the transmitter, wherein the processor is configured to: generate a phase tracking reference signal (PTRS); allocate the PTRS to one or more resource blocks included in a scheduled bandwidth; and control the transmitter to transmit the allocated PTRS, and wherein an interval between the one or more resource blocks to which the PTRS is allocated is determined based on the scheduled bandwidth, and wherein indices of the resource blocks to which the PTRS is allocated are shifted based on at least one of identification (ID) of the UE or a maximum number of shiftable resource blocks. ### Claim 10 (depends on 9) The base station of claim 9, wherein the interval between the one or more resource blocks to which the PTRS is allocated is 1 based on the scheduled bandwidth less than a first threshold, one PTRS being allocated for each resource block, wherein the interval between the one or more resource blocks to which the PTRS is allocated is 2 based on the scheduled bandwidth more than or equal to the first threshold and less than a second threshold, one PTRS being allocated for every two resource blocks, and wherein the interval between the one or more resource blocks to which the PTRS is allocated is 4 based on the scheduled bandwidth more than the second threshold, one PTRS being allocated for every four resource blocks. ### Claim 11 (depends on 9) The base station of claim 9, wherein a maximum number of PTRS subcarriers to which the PTRS is allocated is determined based on the scheduled bandwidth. ### Claim 12 (depends on 11) The base station of claim 11, wherein based on the PTRS allocated based on the interval between the one or more resource blocks to which the PTRS is allocated and a number of the one or more resource blocks to which the PTRS is allocated more than the maximum number of PTRS subcarriers, the PTRS is not allocated to remaining resource blocks included in the scheduled bandwidth. ### Claim 13 (depends on 9) The base station of claim 9, wherein the PTRS is allocated starting from a resource block with a low resource block index based on the interval between the one or more resource blocks to which the PTRS is allocated. ### Claim 14 (depends on 9) The base station of claim 9, wherein the maximum number of shiftable resource blocks corresponds to the interval between the one or more resource blocks to which the PTRS is allocated. ### Claim 15 (depends on 9) The base station of claim 9, wherein a number of one or more PTRS subcarriers to which PTRS is allocated is determined based on the scheduled bandwidth. ### Claim 16 (depends on 15) The base station of claim 15, wherein resource block indices of the one or more resource blocks to which the PTRS is allocated are determined according to Equation A: i = ⌊ l ⁢ P L ⌋ + k , l = 0 , 1 , … ⁢ , L - 1 [ Equation ⁢ ⁢ A ] where i denotes the indices of the resource blocks to which the PTRS is allocated, P denotes the scheduled bandwidth, L denotes the number of one or more PTRS subcarriers to which the PTRS is allocated, and k denotes an offset value.