# US 12,003,451 B2 · Method and apparatus for positioning reference signal configuration in a 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 12,003,451 B2 - Document ID: US12003451B2 - Status: Granted - Kind: B2 - Application number: 17/594,099 - Filed: 2020-04-01 - Published: 2022-06-16 - Granted: 2024-06-04 - Earliest claimed: 2019-04-02 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Mythri Hunukumbure; Yinan Qi - Web page: https://patentgrep.com/patent/US12003451B2 ## CPC - H04J 11/0056: {Inter-base station aspects} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0073: {Allocation arrangements that take into account other cell interferences} - 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)} - H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management - H04L 27/261: {Details of reference signals} - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - 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 Disclosed is a method of configuring a Positioning Reference Signal, PRS, in each of a plurality of cells in a telecommunication network. The method of a serving base station (BS) may include transmitting a second positioning reference signal (PRS) to a user equipment (UE); receiving, from the UE, a request to request a neighbor BS to configure a first PRS to occupy (1/μ)th of slot duration of a Sub Carrier Spacing (SCS) of the neighbor BS; and transmitting the request to the neighbor BS, wherein the neighbor BS having a lower (SCS) than an SCS of the serving BS, and wherein μ is the ratio of the SCS of the serving BS to the SCS of the neighbor BS. ## Claims ### Claim 1 A user equipment (UE) in a wireless communication system, the UE comprising: a transceiver; and at least one processor operably connected to the transceiver, the at least one processor configured to: control the transceiver to receive a first positioning reference signal (PRS) from a first cell and a second PRS from a second cell; identify that a first Sub Carrier Spacing (SCS) of the first cell is lower than a second SCS of the second cell based on the first PRS and the second PRS; and control the transceiver to transmit, to the second cell, a request message to request the first cell to configure the first PRS to have a same slot duration as a slot duration of the second PRS. ### Claim 2 (depends on 1) The UE of claim 1, wherein the first PRS is configured to occupy (1/μ)th of a slot duration of the first cell. ### Claim 3 (depends on 1) The UE of claim 1, wherein a PRS configuration is indicated by one or more control bits via signaling between the first cell and the second cell. ### Claim 4 (depends on 1) The UE of claim 1, wherein the at least one processor is further configured to: control the transceiver to receive, from the second cell, PRS configuration information for the first cell through a physical downlink control channel (PDCCH). ### Claim 5 (depends on 1) The UE of claim 1, wherein the first PRS is configured for a time period before reverting to an original or another configuration. ### Claim 6 A second cell in a wireless communication system, the second cell comprising: a transceiver; and at least one processor operably connected to the transceiver, the at least one processor configured to: control the transceiver to transmit a second positioning reference signal (PRS) to a user equipment (UE); control the transceiver to receive, from the UE, a request message to request a first cell to configure a first PRS to have a same slot duration as a slot duration of the second PRS, wherein the first PRS is transmitted by the first cell; and control the transceiver to transmit, to the first cell, a request for configuring the first PRS to have the same slot duration as the slot duration of the second PRS based on the request message, wherein a first Sub Carrier Spacing (SCS) of the first cell is lower than a second SCS of the second cell. ### Claim 7 (depends on 6) The second cell of claim 6, wherein the first PRS is configured to occupy (1/μ)th of the slot duration of the first cell. ### Claim 8 (depends on 6) The second cell of claim 6, wherein a PRS configuration is indicated by one or more control bits via signaling between the first cell and the second cell. ### Claim 9 (depends on 6) The second cell of claim 6, wherein the at least one processor is further configured to control the transceiver to transmit, to the UE, PRS configuration information for the first cell through a physical downlink control channel (PDCCH). ### Claim 10 (depends on 6) The second cell of claim 6, wherein the first PRS is configured for a time period before reverting to an original or another configuration. ### Claim 11 A first cell in a wireless communication system, the first cell comprising: a transceiver; and at least one processor operably connected to the transceiver, the at least one processor configured to: control the transceiver to transmit a first positioning reference signal (PRS) to a user equipment (UE); control the transceiver to receive, from a second cell, a request for configuring the first PRS to have a same slot duration as a slot duration of a second PRS, wherein the second PRS is transmitted by the second cell; and determine a slot duration of the first PRS based on the request to have the same slot duration as the slot duration of the second PRS, wherein a first Sub Carrier Spacing (SCS) of the first cell is lower than a second SCS of the second cell. ### Claim 12 (depends on 11) The first cell of claim 11, wherein the first PRS is configured to occupy (1/μ)th of the slot duration of the first cell. ### Claim 13 (depends on 11) The first cell of claim 11, wherein a PRS configuration is indicated by one or more control bits via signaling between the first cell and the second cell. ### Claim 14 (depends on 11) The first cell of claim 11, wherein PRS configuration information for the first cell is transmitted by the second cell to the UE through a physical downlink control channel (PDCCH). ### Claim 15 (depends on 11) The first cell of claim 11, wherein the first PRS is configured for a time period before reverting to an original or another configuration.