# US 2018/0324613 A1 · Method, System and Device for Detecting a Silence Period Status in a User Equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324613 A1 - Document ID: US20180324613A1 - Status: Published application - Kind: A1 - Application number: 16/033,414 - Filed: 2018-07-12 - Published: 2018-11-08 - Earliest claimed: 2015-01-14 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Carola Faronius; Saad Naveed Ahmed; Don Corry - Web page: https://patentgrep.com/patent/US20180324613A1 ## CPC - H04L 65/1083: In-session procedures - H04L 43/16: Threshold monitoring - H04L 65/1059: End-user terminal functionalities specially adapted for real-time communication - H04M 7/006: {Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer (H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42)} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - G10L 25/78: Detection of presence or absence of voice signals (switching of direction of transmission by voice frequency in two-way loud-speaking telephone systems H04M9/10) - H04W 88/02: Terminal devices - H04W 88/08: Access point devices - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING ## Abstract A second device that is in communication with a first device receives transmissions of the first device and detects a SILENCE period status of the first device, which corresponds to a status wherein the first device has no speech samples to be transmitted towards the second apparatus. The second device determines the type of the received transmissions, counts the number of received transmissions of a first type, and times a time interval between the last received transmission of the first type and the last received transmission of a second determined type. At reception of a transmission of the first type, the second device detects whether the first device is in the SILENCE period status on an evaluation of the counted number of transmissions of the first type and the time interval of the last received transmission of the first type and the last received transmission of the second type. ## Claims ### Claim 1 A method of operation by a node in a cellular network, the method comprising: detecting a transition by a user equipment from a talk state to a silence state with respect to a Voice-over-Internet-Protocol (VoIP) session by: sending uplink grants to the user equipment and receiving responsive uplink transmissions from the user equipment, wherein the user equipment responds to any given uplink grant with a VoIP transmission if it has VoIP speech or VoIP Silence Interval Description (SID) information ready to send and otherwise responds with a non-VoIP transmission; and determining from the responsive uplink transmissions whether the user equipment has transitioned from the talk state to the silence state in joint dependence on an elapsed time since a last VoIP transmission was successfully received from the user equipment and a count of non-VoIP transmissions received from the user equipment during the elapsed time. ### Claim 2 (depends on 1) The method of claim 1, further comprising, for purposes of determining whether the user equipment has transitioned from the talk state to the silence state, ignoring any VoIP transmission from the UE that is not received successfully. ### Claim 3 (depends on 1) The method of claim 1, further comprising tracking the elapsed time via a timer and restarting the timer and resetting the count in response to each VoIP transmission received from the user equipment among the responsive uplink transmissions. ### Claim 4 (depends on 1) The method of claim 1, wherein determining from the responsive uplink transmissions whether the user equipment has transitioned from the talk state to the silence state comprises deeming the user equipment to have transitioned to the silence state responsive to determining that the elapsed time exceeds a defined time threshold and responsive to determining that the count of non-VoIP transmissions exceeds a defined count threshold. ### Claim 5 (depends on 1) The method of claim 1, further comprising adapting a resource allocation in the cellular network for the user equipment responsive to determining that the user equipment has transitioned from the talk state to the silence state. ### Claim 6 (depends on 1) The method of claim 1, further comprising identifying any given responsive uplink transmission received from the user equipment to be a VoIP transmission responsive to determining the given responsive uplink transmission is associated with a logical channel used for the VoIP session and is not an empty transmission, and identifying the given responsive uplink transmission to be a non-VoIP transmission responsive to determining that the given responsive uplink transmission is an empty transmission or is not associated with the logical channel used for the VoIP session. ### Claim 7 (depends on 1) The method of claim 1, further comprising, for purposes of determining whether the user equipment has transitioned from the talk state to the silence state, ignoring any re-transmissions or Hybrid Automatic Repeat reQuest (HARQ) transmissions from the user equipment. ### Claim 8 (depends on 1) The method of claim 1, further comprising, subsequent to a determination that the user equipment has transitioned from the talk state to the silence state, deeming the user equipment to have returned to the talk state, upon receiving a VoIP transmission from the user equipment. ### Claim 9 A node configured for operation in a cellular network, the node comprising: interface circuitry configured for communicating with a user equipment; and processing circuitry that is operatively associated with the interface circuitry and configured to detect a transition by the user equipment from a talk state to a silence state with respect to a Voice-over-Internet-Protocol (VoIP) session by: sending uplink grants to the user equipment and receiving responsive uplink transmissions from the user equipment, wherein the user equipment responds to any given uplink grant with a VoIP transmission if it has VoIP speech or VoIP Silence Interval Description (SID) information ready to send and otherwise responds with a non-VoIP transmission; and determining from the responsive uplink transmissions whether the user equipment has transitioned from the talk state to the silence state in joint dependence on an elapsed time since a last VoIP transmission was successfully received from the user equipment and a count of non-VoIP transmissions received from the user equipment during the elapsed time. ### Claim 10 (depends on 9) The node of claim 9, wherein, for purposes of determining whether the user equipment has transitioned from the talk state to the silence state, the processing circuitry is configured to ignore any VoIP transmission from the UE that is not received successfully. ### Claim 11 (depends on 9) The node of claim 9, wherein the processing circuitry is configured to track the elapsed time via a timer and restart the timer and reset the count in response to each VoIP transmission received from the user equipment among the responsive uplink transmissions. ### Claim 12 (depends on 9) The node of claim 9, wherein the processing circuitry is configured to determine from the responsive uplink transmissions whether the user equipment has transitioned from the talk state to the silence state by deeming the user equipment to have transitioned to the silence state responsive to determining that the elapsed time exceeds a defined time threshold and responsive to determining that the count of non-VoIP transmissions exceeds a defined count threshold. ### Claim 13 (depends on 9) The node of claim 9, wherein the processing circuitry is configured to adapt a resource allocation in the cellular network for the user equipment responsive to determining that the user equipment has transitioned from the talk state to the silence state. ### Claim 14 (depends on 9) The node of claim 9, wherein the processing circuitry is configured to identify any given responsive uplink transmission received from the user equipment to be a VoIP transmission by determining that the given responsive uplink transmission is associated with a logical channel used for the VoIP session and is not an empty transmission, and identify the given responsive uplink transmission to be a non-VoIP transmission by determining that the given responsive uplink transmission is an empty transmission or is not associated with the logical channel used for the VoIP session. ### Claim 15 (depends on 9) The node of claim 9, wherein, for purposes of determining whether the user equipment has transitioned from the talk state to the silence state, the processing circuitry is configured to ignore any re-transmissions or Hybrid Automatic Repeat reQuest (HARQ) transmissions from the user equipment. ### Claim 16 (depends on 9) The node of claim 9, wherein, subsequent to a determination that the user equipment has transitioned from the talk state to the silence state, the processing circuitry is configured to deem the user equipment to have returned to the talk state, upon receiving a VoIP transmission from the user equipment. ### Claim 17 (depends on 9) The node of claim 9, wherein the node comprises a base station configured for operation in the cellular network.