{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9706396","patent":{"patent_number":"US-9706396","title":"System and method of counter management and security key update for device-to-device group communication","assignee":null,"inventors":[],"filing_date":"2015-08-07T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["H04W","H04L","H04W","H04W","H04L","H04L","H04W"],"num_claims":12,"abstract":"A system and a method of counter management and security key update for device-to-device (D2D) communication are provided. The method includes creating by a user equipment, a new packet data convergence protocol (PDCP) entity for a service group wherein a service group is identified by a destination identifier (ID), determining if any PDCP entity of the service group exists or not, generating a new proximity service (ProSe)traffic key (PTK) from a ProSe group key (PGK) corresponding to the service group associated with the new PDCP entity, initializing a new packet counter associated with the service group to zero if the new PDCP entity is a first PDCP entity associated with the service group, generating a ProSe encryption key (PEK) from the PTK and encrypting data packets mapped to the new PDCP entity using the PEK and a packet counter associated with the service group."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System and method of counter management and security key update for device-to-device group communication","description":"A system and a method of counter management and security key update for device-to-device (D2D) communication are provided. The method includes creating by a user equipment, a new packet data convergen","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9706396","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9706396","citation_suggestion":"Patentable. \"System and method of counter management and security key update for device-to-device group communication\" (US-9706396). https://patentable.app/patents/US-9706396","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9706396","json":"https://patentable.app/api/llm-context/US-9706396","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:11:41.697Z"}