# US 12,192,131 B2 · Positioning reference signaling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,131 B2 - Document ID: US12192131B2 - Status: Granted - Kind: B2 - Application number: 17/421,951 - Filed: 2020-01-09 - Published: 2022-04-14 - Granted: 2025-01-07 - Earliest claimed: 2019-01-11 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Erik Stare; Per Ernström; Fredrik Gunnarsson; Iana Siomina - Web page: https://patentgrep.com/patent/US12192131B2 ## CPC - 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 27/261: {Details of reference signals} - G01S 1/0428: {Signal details} - G01S 1/20: using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems - H04L 27/2613: {Structure of the reference signals} - H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract There is disclosed a method of operating a network node in a radio access network, the method including transmitting reference signaling based on a reference signaling configuration, the reference signaling configuration corresponding to a comb-n structure for a symbol group of a slot, wherein the reference signaling configuration corresponds to a staggered and/or re-ordered comb-n structure for one or more other symbol groups of the slot. The disclosure also pertains to related devices and methods. ## Claims ### Claim 1 A method of operating a network node in a radio access network, the method comprising: transmitting reference signaling based on a reference signaling configuration, the reference signaling configuration corresponding to a comb-n structure for a symbol group of a slot, and the reference signaling configuration corresponding to at least one of a staggered and a re-ordered comb-n structure for one or more other symbol groups of the slot; and the reference signaling configuration further comprising one or both of: a symbol group having a length of m in symbols, wherein one of m=1 and m=2; and a staggered comb-n structure corresponding to a frequency distribution over a symbol group shifted by k subcarriers for each shift in time corresponding to a length of the symbol group, wherein k is one of k=1, k=2, k=−1, k=−2, k=7, k=−7, k=14 and k=−14. ### Claim 2 A network node for a radio access network, the network node configured to: transmit reference signaling based on a reference signaling configuration, the reference signaling configuration corresponding to a comb-n structure for a symbol group of a slot, and the reference signaling configuration corresponding to at least one of a staggered and a re-ordered comb-n structure for one or more other symbol groups of the slot; and the reference signaling configuration further comprising one or both of: a symbol group having a length of m in symbols, wherein one of m=1 and m=2; and a staggered comb-n structure corresponding to a frequency distribution over a symbol group shifted by k subcarriers for each shift in time corresponding to a length of the symbol group, wherein k is one of k=1, k=2, k=−1, k=−2, k=7, k=−7, k=14 and k=−14. ### Claim 3 A method of operating a user equipment in a radio access network, the method comprising: receiving reference signaling based on a reference signaling configuration, the reference signaling configuration corresponding to a comb-n structure for a symbol group of a slot, and the reference signaling configuration corresponding to at least one of a staggered and a re-ordered comb-n structure for one or more other symbol groups of the slot; and the reference signaling configuration further comprising one or both of: a symbol group having a length of m in symbols, wherein one of m=1 and m=2; and a staggered comb-n structure corresponding to a frequency distribution over a symbol group shifted by k subcarriers for each shift in time corresponding to a length of the symbol group, wherein k is one of k=1, k=2, k=−1, k=−2, k=7, k=−7, k=14 and k=−14. ### Claim 4 A wireless device for a radio access network, the wireless device configured to: receive reference signaling based on a reference signaling configuration, the reference signaling configuration corresponding to a comb-n structure for a symbol group of a slot, and the reference signaling configuration corresponding to at least one of a staggered and a re-ordered comb-n structure for one or more other symbol groups of the slot; and the reference signaling configuration further comprising one or both of: a symbol group having a length of m in symbols, wherein one of m=1 and m=2; and a staggered comb-n structure corresponding to a frequency distribution over a symbol group shifted by k subcarriers for each shift in time corresponding to a length of the symbol group, wherein k is one of k=1, k=2, k=−1, k=−2, k=7, k=−7, k=14 and k=−14. ### Claim 5 (depends on 1) The method according to claim 1, wherein all symbol groups in a slot have the same duration in number of symbols. ### Claim 6 (depends on 1) The method according to claim 1, wherein a re-ordered comb-n structure corresponds to a time/frequency distribution of reference signaling that is achieved by redistributing symbol groups of a staggered comb-n structure in the slot. ### Claim 7 (depends on 1) The method according to claim 1, wherein a reordered comb-n structure corresponds to a time/frequency distribution of reference signaling covering a plurality of symbol groups being repeated at least once in a slot. ### Claim 8 (depends on 1) The method according to claim 1, wherein the comb-n is a comb-6. ### Claim 9 (depends on 1) The method according to claim 1, wherein the comb-n is a comb-12. ### Claim 10 (depends on 1) The method according to claim 1, wherein the reference signaling is power-boosted. ### Claim 11 (depends on 1) The method according to claim 1, wherein, in time domain, at least one of before and after a non-zero power resource element of a symbol group, there is a zero-power resource element. ### Claim 12 A non-transient computer storage medium storing executable computer program instructions configured to cause processing circuitry to at least one of control and perform a method, the method comprising: transmitting reference signaling based on a reference signaling configuration, the reference signaling configuration corresponding to a comb-n structure for a symbol group of a slot, and the reference signaling configuration corresponding to at least one of a staggered and a re-ordered comb-n structure for one or more other symbol groups of the slot; and the reference signaling configuration further comprising one or both of: a symbol group having a length of m in symbols, wherein one of m=1 and m=2; and a staggered comb-n structure corresponding to a frequency distribution over a symbol group shifted by k subcarriers for each shift in time corresponding to a length of the symbol group, wherein k is one of k=1, k=2, k=−1, k=−2, k=7, k=−7, k=14 and k=−14. ### Claim 13 (depends on 3) The method according to claim 3, wherein all symbol groups in a slot have the same duration in number of symbols. ### Claim 14 (depends on 3) The method according to claim 3, wherein a re-ordered comb-n structure corresponds to a time/frequency distribution of reference signaling that is achieved by redistributing symbol groups of a staggered comb-n structure in the slot. ### Claim 15 (depends on 3) The method according to claim 3, wherein a reordered comb-n structure corresponds to a time/frequency distribution of reference signaling covering a plurality of symbol groups being repeated at least once in a slot. ### Claim 16 (depends on 3) The method according to claim 3, wherein the comb-n is a comb-6.