# US 2026/0089613 A1 · Unsynchronized service discovery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0089613 A1 - Document ID: US20260089613A1 - Status: Published application - Kind: A1 - Application number: 19/337,803 - Filed: 2025-09-23 - Published: 2026-03-26 - Earliest claimed: 2024-09-26 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Bilal Sadiq; Yue Qi; Vishnu Vardhan Ratnam; Peshal Nayak; Rubayet Shafin; Boon Loong Ng - Web page: https://patentgrep.com/patent/US20260089613A1 ## CPC - H04W 48/16: Discovering, processing access restriction or access information - H04W 8/005: {Discovery of network devices, e.g. terminals} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An electronic device includes a transceiver configured to monitor for receipt of at least one publish message from another electronic device. The electronic device also includes a processor operably coupled to the transceiver. The processor is configured to, upon receipt of a first publish message, determine whether the first publish message is relevant to an application of the electronic device. In response to a determination that the first publish message is relevant, the processor is also configured to (i) declare a discovery result event, (ii) generate follow-up message, and (iii) in response to the declaration of the discovery event, cause the transceiver to transmit the follow-up message to the other electronic device. ## Claims ### Claim 1 An electronic device comprising: a transceiver configured to monitor for receipt of at least one publish message from another electronic device; and a processor operably coupled to the transceiver, the processor configured to, upon receipt of a first publish message: determine whether the first publish message is relevant to an application of the electronic device; and in response to a determination that the first publish message is relevant: declare a discovery result event; generate a follow-up message; and in response to the declaration of the discovery result event, cause the transceiver to transmit the follow-up message to the other electronic device. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein: the first publish message is an unsolicited publish message; the electronic device is configured to operate in an active subscribe mode with a query period of the active subscribe mode set to infinity; the unsolicited publish message is received by the transceiver while the electronic device is operating in the active subscribe mode with the query period of the active subscribe mode set to infinity; and the follow-up message is a subscribe message. ### Claim 3 (depends on 2) The electronic device of claim 2, wherein the processor is further configured to cause the transceiver to transmit the subscribe message in a unicast manner to the other electronic device. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein the processor is further configured to: prior to receiving the first publish message, generate a partial follow-up message that does not include an instance identification (ID); and in response to the declaration of the discovery result event, complete the partial follow-up message with instance ID information from the publish message to generate the follow-up message. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein the processor is further configured to: determine whether the first publish message is an unsynchronized service discovery (USD) publish message or a Neighbor Awareness Networking (NAN) discovery with NAN synchronization (NDNS) publish message; and in response to a determination that the first publish message is a USD publish message, generate the follow-up message without including service specific information (SSI) in the follow-up message. ### Claim 6 (depends on 5) The electronic device of claim 5, wherein: the electronic device is configured to operate in an NDNS passive mode; and the first publish message is received while the electronic device is operating in the NDNS passive mode. ### Claim 7 (depends on 1) The electronic device of claim 1, wherein: the transceiver is further configured to monitor for receipt of the at least one publish message on a plurality of channels; and the processor is further configured to cause the transceiver to transmit the follow-up message to the other electronic device on a channel on which the first publish message is received. ### Claim 8 (depends on 7) The electronic device of claim 7, wherein: the electronic device is configured to operate in an enhanced multilink single radio (EMLSR) mode; and the transceiver is configured to monitor for receipt of the at least one publish message on the plurality of channels simultaneously. ### Claim 9 (depends on 1) The electronic device of claim 1, wherein: the publish message is an unsolicited publish message indicating that further service discovery (FSD) is not required; the electronic device is configured to operate in an unsynchronized service discovery (USD) passive subscribe mode; the unsolicited publish message is received by the transceiver while the electronic device is operating in the USD passive subscribe mode; and the follow-up message is a subscribe message. ### Claim 10 (depends on 9) The electronic device of claim 9, wherein the follow-up message does not include service specific information (SSI). ### Claim 11 (depends on 9) The electronic device of claim 9, wherein the follow-up message is a dummy subscribe message. ### Claim 12 (depends on 1) The electronic device of claim 1, wherein: the first publish message is an unsolicited publish message indicating that further service discovery (FSD) is not required; the follow-up message is a subscribe message; the transceiver is further configured to receive a second publish message from the other electronic device after sending the subscribe message, wherein the second publish message is a solicited publish message; and the processor is further configured to: determine whether the second publish message is relevant to an application of the electronic device; and in response to a determination that the second publish message is relevant, declare that an unsynchronized service discovery (USD) subscribe instance has successfully concluded. ### Claim 13 An electronic device comprising: a transceiver configured to, during an unsynchronized service discovery (USD) publish mode: transmit an unsolicited publish message, the unsolicited publish message indicating that further service discovery (FSD) is not required; and after transmission of the unsolicited publish message, monitor for receipt of a subscribe message from another electronic device; and a processor operably coupled to the transceiver, the processor configured to, upon receipt of a subscribe message indicating that FSD is not required: determine whether the subscribe message is relevant to an application of the electronic device; and in response to a determination that subscribe message is relevant: declare a replied event; generate a solicited publish message; and in response to declaration of the replied event: cause the transceiver to transmit at least one solicited publish message to the other electronic device; and declare that a USD publish instance has successfully concluded. ### Claim 14 A method of operating an electronic device, the method comprising: monitoring for receipt of at least one publish message from another electronic device; upon receipt of a first publish message, determining whether the first publish message is relevant to an application of the electronic device; and in response to a determination that the first publish message is relevant: declaring a discovery result event; generating a follow-up message; and in response to the declaration of the discovery result event, transmitting the follow-up message to the other electronic device. ### Claim 15 (depends on 14) The method of claim 14, wherein: the first publish message is an unsolicited publish message; the electronic device is configured to operate in an active subscribe mode with a query period of the active subscribe mode set to infinity; the unsolicited publish message is received by the electronic device while the electronic device is operating in the active subscribe mode with the query period of the active subscribe mode set to infinity; and the follow-up message is a subscribe message. ### Claim 16 (depends on 14) The method of claim 14, further comprising: prior to receiving the first publish message, generating a partial follow-up message that does not include an instance identification (ID); and in response to the declaration of the discovery result event, completing the partial follow-up message with instance ID information from the publish message to generate the follow-up message. ### Claim 17 (depends on 14) The method claim 14, further comprising: determining whether the first publish message is an unsynchronized service discovery (USD) publish message or a Neighbor Awareness Networking (NAN) discovery with NAN synchronization (NDNS) publish message; and in response to a determination that the first publish message is a USD publish message, generating the follow-up message without including service specific information (SSI) in the follow-up message. ### Claim 18 (depends on 14) The electronic device of claim 14, wherein: receipt of the at least one publish message is monitored for on a plurality of channels; and the follow-up message to the other electronic device is transmitted on a channel on which the first publish message is received. ### Claim 19 (depends on 14) The electronic device of claim 14, wherein: the publish message is an unsolicited publish message indicating that further service discovery (FSD) is not required; the electronic device is configured to operate in an unsynchronized service discovery (USD) passive subscribe mode; the unsolicited publish message is received by the electronic device while the electronic device is operating in the USD passive subscribe mode; and the follow-up message is a subscribe message. ### Claim 20 (depends on 14) The electronic device of claim 14, wherein: the first publish message is an unsolicited publish message indicating that further service discovery (FSD) is not required; the follow-up message is a subscribe message; and the method further comprises: receiving a second publish message from the other electronic device after sending the subscribe message, wherein the second publish message is a solicited publish message; determining whether the second publish message is relevant to an application of the electronic device; and in response to a determination that the second publish message is relevant, declaring that an unsynchronized service discovery (USD) subscribe instance has successfully concluded.