# US 12,192,931 B2 · Wireless communication enhancements for transparent and boundary clocks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,931 B2 - Document ID: US12192931B2 - Status: Granted - Kind: B2 - Application number: 18/444,373 - Filed: 2024-02-16 - Published: 2024-06-13 - Granted: 2025-01-07 - Earliest claimed: 2019-02-18 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Vinay Joseph; Rajat Prakash; Peerapol Tinnakornsrisuphap; Fatih Ulupinar - Web page: https://patentgrep.com/patent/US12192931B2 ## CPC - H04J 3/0641: {Change of the master or reference, e.g. take-over or failure of the master} - H04W 56/001: {Synchronization between nodes} - H04L 69/28: Timers or timing mechanisms used in protocols - H04W 76/10: Connection setup - H04J 3/0667: {Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays (arrangements for monitoring round trip delays in packet switching networks H04L43/0864)} - H04J 3/0673: {using intermediate nodes, e.g. modification of a received timestamp before further transmission to the next packet node, e.g. including internal delay time or residence time into the packet} - 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) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Methods, systems, and devices for wireless communications are described. In an example, a method includes a first node receiving a precision time protocol (PTP) message, identifying one or more timing domains to be supported by the first node based at least in part on the PTP message, and sending, to a second node of the wireless communication network, an indicator of the one or more timing domains to be supported by the first node. Another example at a node includes receiving, from additional nodes of the wireless communication network, indicators of one or more timing domains supported by the additional nodes, receiving a PTP message associated with a timing domain, and sending the PTP message to a subset of the additional nodes based at least in a part on the indicators of one or more timing domains supported by the additional nodes. ## Claims ### Claim 1 An apparatus, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the apparatus to: establish, with a node of a wireless communication network, a packet data unit (PDU) session for communication of messages for one or more protocols including precision time protocol (PTP) messages associated with one or more timing domains; transmit an upstream PTP message that includes one or more indicators of the one or more timing domains supported by the apparatus, wherein the one or more indicators of the one or more timing domains supported by the apparatus comprise a domain number included in a header associated with the upstream PTP message; and receive, via the established PDU session and from the node, a downstream PTP message that includes an indication of the one or more timing domains associated with the established PDU session, the downstream PTP message originating from a time sensitive network node and is associated with a timing domain of the one or more timing domains, wherein a field of the downstream PTP message is adjusted based on a link delay between the time sensitive network node and the node; wherein the node comprises a user plane function (UPF). ### Claim 2 (depends on 1) The apparatus of claim 1, wherein receiving the downstream PTP message is based at least in part on the apparatus supporting the timing domain associated with the downstream PTP message. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the one or more indicators of the one or more timing domains supported by the apparatus comprise a virtual local area network tag associated with the upstream PTP message. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the upstream PTP message, the downstream PTP message, or both is a generic PTP (gPTP) message. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the wireless communication network acts as a peer-to-peer transparent clock. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the apparatus is associated with a translator, and the translator operates as a time sensitive network (TSN) translator. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the node is associated with a translator, and the translator operates as a time sensitive network (TSN) translator. ### Claim 8 A method at a user equipment (UE) of a wireless communication network, comprising: establishing, with a node of the wireless communication network, a packet data unit (PDU) session for communication of messages for one or more protocols including precision time protocol (PTP) messages associated with one or more timing domains; transmitting an upstream PTP message including one or more indicators of the one or more timing domains supported by the UE, wherein the one or more indicators of the one or more timing domains supported by the UE comprise a domain number included in a header associated with the upstream PTP message; and receiving, via the established PDU session and from the node, a downstream PTP message including an indication of the one or more timing domains associated with the established PDU session, the downstream PTP message originating from a time sensitive network node and associated with a timing domain of the one or more timing domains, wherein a field of the downstream PTP message is adjusted based on a link delay between the time sensitive network node and the node; wherein the node comprises a user plane function (UPF). ### Claim 9 (depends on 8) The method of claim 8, wherein receiving the downstream PTP message is based at least in part on the UE supporting the timing domain associated with the downstream PTP message. ### Claim 10 (depends on 8) The method of claim 8, wherein the one or more indicators of the one or more timing domains supported by the UE comprise a virtual local area network tag associated with the upstream PTP message. ### Claim 11 (depends on 8) The method of claim 8, wherein the upstream PTP message, the downstream PTP message, or both is a generic PTP (gPTP) message. ### Claim 12 (depends on 8) The method of claim 8, wherein the wireless communication network acts as a peer-to-peer transparent clock. ### Claim 13 (depends on 8) The method of claim 8, wherein the UE is associated with a translator, and the translator operates as a time sensitive network (TSN) translator. ### Claim 14 A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to: establish, with a node of a wireless communication network, a packet data unit (PDU) session for communication of messages for one or more protocols including precision time protocol (PTP) messages associated with one or more timing domains; transmit an upstream PTP message that includes one or more indicators of the one or more timing domains supported by a user equipment (UE), wherein the one or more indicators of the one or more timing domains supported by the UE comprise a domain number included in a header associated with the upstream PTP message; and receive, via the established PDU session and from the node, a downstream PTP message that includes an indication of the one or more timing domains associated with the established PDU session, the downstream PTP message originating from a time sensitive network node and is associated with a timing domain of the one or more timing domains, wherein a field of the downstream PTP message is adjusted based on a link delay between the time sensitive network node and the node; wherein the node comprises a user plane function (UPF). ### Claim 15 (depends on 14) The non-transitory computer-readable medium of claim 14, wherein receiving the downstream PTP message is based at least in part on the UE supporting the timing domain associated with the downstream PTP message. ### Claim 16 (depends on 14) The non-transitory computer-readable medium of claim 14, wherein the one or more indicators of the one or more timing domains supported by the UE comprise a virtual local area network tag associated with the upstream PTP message. ### Claim 17 (depends on 14) The non-transitory computer-readable medium of claim 14, wherein the upstream PTP message, the downstream PTP message, or both is a generic PTP (gPTP) message. ### Claim 18 (depends on 14) The non-transitory computer-readable medium of claim 14, wherein the wireless communication network acts as a peer-to-peer transparent clock.