# US 9,521,238 B1 · Establishing multiple short range wireless links between a vehicle and a mobile device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,238 B1 - Document ID: US9521238B1 - Status: Granted - Kind: B1 - Application number: 14/799,266 - Filed: 2015-07-14 - Granted: 2016-12-13 - Earliest claimed: 2015-07-14 - Assignees: GM Global Technology Operations LLC - Applicants: GM Global Technology Operations LLC - Inventors: Lakshmi V. Thanayankizil; Fan Bai; Wen Gu - Web page: https://patentgrep.com/patent/US9521238B1 ## CPC - H04M 1/72412: using two-way short-range wireless interfaces - H04B 1/3822: specially adapted for use in vehicles (H04B1/3827 takes precedence) - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04M 2250/02: including a Bluetooth® interface - H04M 2250/04: including near field communication means, e.g. RFID - H04M 2250/06: including a wireless LAN interface - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A mobile communication system and a method of establishing a wireless connection between a vehicle and at least one mobile device. The method includes: establishing a first short range wireless communication (SRWC) link between the vehicle and the mobile device; and using the first SRWC link to establish a second SRWC link between the vehicle and the mobile device, wherein the first and second SRWC links use different SRWC protocols. ## Claims ### Claim 1 A method of establishing a wireless connection between a vehicle and a mobile device, comprising the steps of: establishing a first short range wireless communication (SRWC) link between the vehicle and the mobile device; sending a request from the vehicle to the mobile device to perform a vehicle service that requires a second SRWC link different from the first SRWC link; and using the first SRWC link to establish the second SRWC link between the vehicle and the mobile device, wherein the first and second SRWC links use different SRWC protocols. ### Claim 2 (depends on 1) The method of claim 1, wherein using the first SRWC link includes providing between the vehicle and the mobile device credentials associated with the second SRWC link. ### Claim 3 (depends on 2) The method of claim 2, wherein credentials of the mobile device are provided to the vehicle via the first SRWC link and stored in vehicle memory. ### Claim 4 (depends on 2) The method of claim 2, wherein the second SRWC link is a Wi-Fi Direct connection, wherein providing the credentials via the first SRWC link automates a Wi-Fi Direct authentication process between the vehicle and mobile device. ### Claim 5 (depends on 1) The method of claim 1, wherein the first SRWC link is an out-of-band connection with respect to the second SRWC link. ### Claim 6 (depends on 5) The method of claim 5, wherein the first SRWC link is one of a Wi-Fi connection, a Bluetooth connection, a Bluetooth Low Energy (BLE) connection, or a Near-Field Communication (NFC) connection. ### Claim 7 (depends on 6) The method of claim 6, wherein the vehicle and mobile device are connected according to a third SRWC link during the establishment of the first SRWC and during at least a portion of the using of the first SRWC link to establish the second SRWC link. ### Claim 8 (depends on 7) The method of claim 7, wherein the establishing step (establishing the first SRWC link) is between the vehicle and a first mobile device, wherein the using step (using the first SRWC link to establish the second SRWC link) is between the vehicle and the first mobile device, wherein at least a portion of the establishing and using steps occur while a second mobile device communicates with the vehicle via a third SRWC link. ### Claim 9 (depends on 8) The method of claim 8, further comprising terminating the third SRWC link when the second SRWC link is established. ### Claim 10 (depends on 1) The method of claim 1, wherein the first and second SRWC links utilize a vehicle infotainment system (VIS) at the vehicle. ### Claim 11 A method of establishing a wireless connection between a vehicle and a mobile device, comprising: establishing a first short range wireless communication (SRWC) link between the vehicle and the mobile device; receiving at the vehicle credentials from the mobile device following a determination at the mobile device that the vehicle is a trusted device; determining at the vehicle to perform an out-of-band service associated with the mobile device; and in response to the determination, establishing a second SRWC link and providing the out-of-band service. ### Claim 12 (depends on 11) The method of claim 11, wherein the determination to perform the out-of-band service includes providing a request to the mobile device via the first SRWC link and receiving a response therefrom. ### Claim 13 (depends on 11) The method of claim 11, wherein the out-of-band service is associated with phone projection. ### Claim 14 (depends on 11) The method of claim 11, wherein the first and second SRWC links utilize a vehicle infotainment system (VIS) at the vehicle. ### Claim 15 A method of establishing a wireless connection between a vehicle and a mobile device, comprising: establishing a first short range wireless communication (SRWC) link between the vehicle and a first mobile device; establishing a second SRWC link between the vehicle and a second mobile device; receiving a request from the second mobile device to establish a third SRWC link using the second SRWC link; and in response to the request, disconnecting the first SRWC link and establishing the third SRWC link between the vehicle and the second mobile device. ### Claim 16 (depends on 15) The method of claim 15, further comprising connecting the first mobile device to the vehicle via the established third SRWC link. ### Claim 17 (depends on 16) The method of claim 16, further comprising: prior to connecting the first mobile device to the vehicle via the third SRWC link, providing credentials from the first mobile device to the vehicle so that the first mobile device is connected automatically following its disconnection from the first SRWC link. ### Claim 18 (depends on 15) The method of claim 15, further comprising: prior to establishing the third SRWC link, providing credentials from the second mobile device to the vehicle. ### Claim 19 (depends on 18) The method of claim 18, wherein the request to establish the third SRWC link includes the credentials. ### Claim 20 (depends on 15) The method of claim 15, wherein the first, second, and third SRWC links utilize a vehicle infotainment system (VIS) at the vehicle.