# US 2019/0246441 A1 · Control plane method and apparatus for wireless local area network (wlan) integration in cellular systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0246441 A1 - Document ID: US20190246441A1 - Status: Published application - Kind: A1 - Application number: 16/388,684 - Filed: 2019-04-18 - Published: 2019-08-08 - Earliest claimed: 2015-04-08 - Assignees: InterDigital Patent Holdings, Inc. - Applicants: Interdigital Patent Holdings, Inc. - Inventors: Ghyslain PELLETIER; Diana PANI; Guanzhou WANG; Pascal M. ADJAKPLE - Web page: https://patentgrep.com/patent/US20190246441A1 ## CPC - H04W 76/15: Setup of multiple wireless link connections - H04L 63/068: {using time-dependent keys, e.g. periodically changing keys (cryptographic mechanisms or cryptographic arrangements for controlling usage of secret information H04L9/088)} - H04L 63/0846: {using time-dependent-passwords, e.g. periodically changing passwords} - H04L 63/205: {involving negotiation or determination of the one or more network security mechanisms to be used, e.g. by negotiation between the client and the server or between peers or by selection according to the capabilities of the entities involved (negotiation of communication capabilities H04L69/24)} - H04W 12/04: Key management, e.g. using generic bootstrapping architecture [GBA] - H04W 12/06: Authentication - H04W 12/062: Pre-authentication - H04L 2463/061: applying further key derivation, e.g. deriving traffic keys from a pair-wise master key - H04W 76/18: Management of setup rejection or failure - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - 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 A method and apparatus for configuring a Long Term Evolution (LTE)-controlled Wireless Local Area Network (WLAN) interface for a wireless transmit/receive unit (WTRU) are described. A method includes receiving LTE Radio Resource Configuration (RRC) signaling that provides parameters for the WTRU to configure the LTE-controlled WLAN interface. The LTE RRC signaling includes a set of WLAN access points (APs), an indication that the WTRU is permitted to autonomously initiate association with a WLAN within the set, a type of one or more bearers to use for the LTE-controlled WLAN interface, WLAN-related security information, and a configuration for the WTRU to report a status of an association with a WLAN AP. The WTRU selects a WLAN AP to associate to from the list and initiates association to the selected WLAN AP using at least the WLAN-related security information. ## Claims ### Claim 1 A wireless transmit/receive unit (WTRU) comprising: at least one transceiver; and a processor operatively coupled to the at least one transceiver, the at least one transceiver and the processor being configured to receive a radio resource control (RRC) reconfiguration message from a cellular network including traffic steering parameters for a wireless local area network (WLAN), the parameters including radio bearer parameters indicating whether a radio bearer is a cellular only, WLAN only or split cellular and WLAN radio bearer, the at least one transceiver and the processor being configured, in response to the RRC reconfiguration message, to transmit an RRC reconfiguration complete message to the cellular network, and the at least one transceiver and the processor being configured to transmit WLAN only or split radio bearers over the WLAN. ### Claim 2 (depends on 1) The WTRU of claim 1, wherein the at least one transceiver and the processor are further configured to receive the RRC reconfiguration message, or a different RRC reconfiguration message, including a WLAN steering command indicating that the WTRU is to steer traffic to the WLAN. ### Claim 3 (depends on 1) The WTRU of claim 1, wherein the at least one transceiver and the processor are further configured to receive an RRC reconfiguration message including a cellular steering command indicating that the WTRU is to steer traffic from the WLAN to cellular. ### Claim 4 (depends on 1) The WTRU of claim 1, wherein the cellular network is an LTE network. ### Claim 5 (depends on 1) The WTRU of claim 1, wherein the transceiver and the processor are further configured to receive a second RRC reconfiguration message indicating at least one WLAN only or split cellular and WLAN radio bearer is to be a cellular only radio bearer. ### Claim 6 (depends on 5) The WTRU of claim 5, wherein the transceiver and the processor are further configured to transmit a packet data convergence protocol (PDCP) status report based on the received second RRC reconfiguration message. ### Claim 7 A method comprising: receiving, by a wireless transmit/receive unit (WTRU), a radio resource control (RRC) reconfiguration message from a cellular network, the RRC reconfiguration message including traffic steering parameters for a wireless local area network (WLAN), the parameters including radio bearer parameters indicating whether a radio bearer is a cellular only, WLAN only or split cellular and WLAN radio bearer; in response to the RRC reconfiguration message, transmitting, by the WTRU, an RRC reconfiguration complete message to the cellular network; and transmitting, by the WTRU, WLAN only or split radio bearers over the WLAN. ### Claim 8 (depends on 7) The method of claim 7, wherein the RRC reconfiguration message or a different RRC reconfiguration message includes a WLAN steering command indicating that the WTRU is to steer traffic to the WLAN. ### Claim 9 (depends on 7) The method of claim 7, further comprising receiving, by the WTRU, an RRC reconfiguration message including a cellular steering command indicating that the WTRU is to steer traffic from the WLAN to cellular. ### Claim 10 (depends on 7) The method of claim 7, wherein the cellular network is an LTE network. ### Claim 11 (depends on 7) The method of claim 7, further comprising receiving, by the WTRU, a second RRC reconfiguration message indicating at least one WLAN only or split cellular and WLAN radio bearer is to be a cellular only radio bearer. ### Claim 12 (depends on 11) The method of claim 11, further comprising transmitting a packet data convergence protocol (PDCP) status report based on the received second RRC reconfiguration message. ### Claim 13 A cellular network node comprising: at least one transceiver; and a processor operatively coupled to the at least one transceiver, the at least one transceiver and the processor being configured to transmit a radio resource control (RRC) reconfiguration message to a wireless transmit/receive unit (WTRU), the RRC reconfiguration message including traffic steering parameters for a wireless local area network (WLAN), the parameters including radio bearer parameters indicating whether a radio bearer is a cellular only, WLAN only or split cellular and WLAN radio bearer, the at least one transceiver and the processor being configured, in response to the RRC reconfiguration message, to receive an RRC reconfiguration complete message to the cellular network, and the processor is configured to receive WLAN only or split radio bearers sent via the WLAN. ### Claim 14 (depends on 13) The cellular network node of claim 13, wherein the at least one transceiver and the processor are further configured to transmit the RRC reconfiguration message, or a different RRC reconfiguration message, that includes a WLAN steering command indicating that the WTRU is to steer traffic to the WLAN. ### Claim 15 (depends on 13) The cellular network node of claim 13, wherein the at least one transceiver and the processor are further configured to transmit an RRC reconfiguration message including a cellular steering command indicating that the WTRU is to steer traffic from the WLAN to cellular. ### Claim 16 (depends on 13) The cellular network node of claim 13, wherein the cellular network node is an evolved NodeB. ### Claim 17 (depends on 16) The cellular network node of claim 16, wherein the transceiver and the processor are further configured to transmit a second RRC reconfiguration message indicating at least one WLAN only or split cellular and WLAN radio bearer is to be a cellular only radio bearer.