Wireless communication enhancements for transparent and boundary clocks
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.
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).
2. 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.
3. 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.
4. The apparatus of claim 1 , wherein the upstream PTP message, the downstream PTP message, or both is a generic PTP (gPTP) message.
5. The apparatus of claim 1 , wherein the wireless communication network acts as a peer-to-peer transparent clock.
6. The apparatus of claim 1 , wherein the apparatus is associated with a translator, and the translator operates as a time sensitive network (TSN) translator.
7. The apparatus of claim 1 , wherein the node is associated with a translator, and the translator operates as a time sensitive network (TSN) translator.
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).
9. 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.
10. 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.
11. The method of claim 8 , wherein the upstream PTP message, the downstream PTP message, or both is a generic PTP (gPTP) message.
12. The method of claim 8 , wherein the wireless communication network acts as a peer-to-peer transparent clock.
13. The method of claim 8 , wherein the UE is associated with a translator, and the translator operates as a time sensitive network (TSN) translator.
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).
15. 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.
16. 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.
17. 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.
18. The non-transitory computer-readable medium of claim 14 , wherein the wireless communication network acts as a peer-to-peer transparent clock.