# US 9,439,214 B2 · Leveraging multiple access technologies simultaneously > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,214 B2 - Document ID: US9439214B2 - Status: Granted - Kind: B2 - Application number: 13/485,254 - Filed: 2012-05-31 - Published: 2013-12-05 - Granted: 2016-09-06 - Earliest claimed: 2012-05-31 - Assignees: Cisco Technology, Inc. - Applicants: Arun C. Alex; Stinson Mathai; Aeneas Dodd-Noble - Inventors: Arun C. Alex; Stinson Mathai; Aeneas Dodd-Noble - Web page: https://patentgrep.com/patent/US9439214B2 ## CPC - H04W 74/00: Wireless channel access - H04L 12/5692: {Selection among different networks} - H04L 61/5007: Internet protocol [IP] addresses - H04W 12/037: of the control plane, e.g. signalling traffic - H04W 12/06: Authentication - H04W 12/80: Arrangements enabling lawful interception [LI] - H04W 72/1215: {for collaboration of different radio technologies} - H04W 76/12: Setup of transport tunnels - H04W 76/15: Setup of multiple wireless link connections - H04L 63/304: {intercepting circuit switched data communications (lawful interception of wireless network communications H04W12/02)} - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W 88/16: Gateway arrangements - 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 Systems and method are provided that allow a mobile device to communicate over multiple access technologies at the same time, including a cellular access technology, such as LTE, and via an untrusted WLAN access. The untrusted access is initiated via internet key exchange. The mobile device uses the same IP address over both access technologies. ## Claims ### Claim 1 A gateway comprising: interfaces for communicating with mobile devices, including a first mobile device, via a wireless cellular access technology and a wireless non-cellular access technology; and a processor for executing software modules stored in a memory device; the gateway configured to: provide, the first mobile device, a single Internet Protocol (IP) address for use to communicate with a server associated with an access point name (APN) simultaneously over the cellular wireless access technology and the non-cellular wireless access technology, wherein the IP address is allocated by the gateway when the mobile device attaches to the gateway to communicate using the wireless cellular access technology and the gateway sends an acknowledgment to an enhanched packet data gateway (ePDG) confirming allocation of the same IP address for the mobile device when the mobile device attaches to the gateway to communicate using the wireless non-cellular access technology, receive and send IP flow information for allowing simultaneous access with the wireless cellular access technology and the wireless non-cellular access technology, provide to the first mobile device a single traffic flow template (TFT), applicable for the wireless cellular access technology and the wireless non-cellular access technology, to allow the first mobile device to select the wireless cellular access technology for providing a first data flow associated with a first application and to select the wireless non-cellular access technology for providing a second data flow associated with a second application, provide simultaneous data flows to the first mobile device via the cellular access technology and the non-cellular access technology, wherein the communication with the first mobile device for attachment to the gateway for the non-cellular access technology is performed via the enhanced packet data gateway (ePDG), and send a message to a server in communication with the gateway, indicating that a particular data flow is associated with either the wireless cellular access technology or the wireless non-cellular access technology. ### Claim 2 (depends on 1) The gateway of claim 1, wherein the gateway is configured to provide to the first mobile device the TFT with information that allows the first mobile device to prioritize different types of traffic flows over the cellular and noncellular access technologies, such that at least one type of traffic flow for the APN is provided over the cellular access technology and another type of traffic flow for the APN is provided over the noncellular access technology simultaneously. ### Claim 3 (depends on 1) The gateway of claim 1, wherein the gateway is configured to tie packet data network (PDN) connections from different access networks, and to assign a single set of IP addresses to the connections from different access technologies. ### Claim 4 (depends on 1) The gateway of claim 1, wherein the gateway is configured to use network intelligence to select an appropriate path for different data flows such that one data flow is provided over the cellular access technology, and another data flow is provided over the non-cellular access technology based on the importance of the data in the respective data flows. ### Claim 5 (depends on 1) The gateway of claim 1, wherein the gateway is configured to provide a flow of video data via the non-cellular access technology and a flow of audio data via the cellular access technology. ### Claim 6 (depends on 1) The gateway of claim 1, wherein the cellular access technology is long-term evolution (LTE), and the non-3GPP access technology is a wireless local area network technology. ### Claim 7 (depends on 6) The gateway of claim 6, wherein the wireless local area technology is defined by IEEE 802.11, and includes an untrusted access via the enhanced packet data gateway (ePDG). ### Claim 8 (depends on 7) The gateway of claim 7, wherein the gateway is configured to communicate with the first mobile device via the ePDG using internet key exchange (IKE) messages. ### Claim 9 A method comprising: communicating with a mobile device, by a gateway, to provide a single Internet Protocol (IP) address for use to communicate with a server associated with an access point name (APN) simultaneously over a wireless cellular access technology and a wireless non-cellular access technology, wherein the IP address is allocated by the gateway when the mobile device attaches to the gateway to communicate using the wireless cellular access technology and the gateway sends an acknowledgment to an enhanced packet data gateway (ePDG) confirming allocation of the same IP address for the mobile device when the mobile device attaches to the gateway to communicate using the wireless non-cellular access technology, receiving and sending, by the gateway, IP flow information for allowing simultaneous access with the wireless cellular access technology and the wireless non-cellular access technology, providing, by the gateway to the first mobile device, a single traffic flow template (TFT), applicable for the wireless cellular access technology and the wireless non-cellular access technology, to allow the first mobile device to select the wireless cellular access technology for providing a first data flow associated with a first application and to select the wireless non-cellular access technology for providing a second data flow associated with a second application, providing, by the gateway, simultaneous flows to the mobile device via the cellular access technology and the non-cellular access technology, and sending, by the gateway, a message to a server in communication with the gateway, indicating that a particular data flow is associated with either the wireless cellular access technology or the wireless non-cellular access technology, wherein the communication with the mobile device for attachment to the gateway for the non-cellular access technology is performed via the enhanced packet data gateway (ePDG). ### Claim 10 (depends on 1) The gateway of claim 1, wherein the traffic flow template (TFT) includes one or more filters that allows traffic that matches the one or more filters to be routed on a particular access technology. ### Claim 11 (depends on 1) The gateway of claim 1, wherein the message includes a header extension. ### Claim 12 (depends on 1) The gateway of claim 1, wherein the gateway is further configured to send the TFT to the ePDG to provide the TFT to the first mobile device. ### Claim 13 (depends on 9) The method of claim 9, further comprising providing to the mobile device the TFT with information that allows the mobile device to prioritize different types of traffic flows over the cellular and non-cellular access technologies, such that at least one type of traffic flow for the APN is provided over the cellular access technology and another type of traffic flow for the APN is provided over the non-cellular access technology simultaneously. ### Claim 14 (depends on 9) The method of claim 9, further comprising selecting an appropriate path for different data flows such that one data flow is provided over the cellular access technology, and another data flow is provided over the non-cellular access technology based on the importance of the data in the respective data flows. ### Claim 15 (depends on 9) The method of claim 9, further comprising providing a flow of video data via the non-cellular access technology and a flow of audio data via the cellular access technology. ### Claim 16 (depends on 9) The method of claim 9, wherein the cellular access technology is long-term evolution (LTE), and the non-3GPP access technology is a wireless local area network technology. ### Claim 17 (depends on 16) The method of claim 16, wherein the wireless local area technology is defined by IEEE 802.11, and includes an untrusted access via the enhanced packet data gateway (ePDG). ### Claim 18 (depends on 17) The method of claim 17, wherein the gateway is configured to communicate with the mobile device via the ePDG using internet key exchange (IKE) messages. ### Claim 19 A user equipment comprising: a processor for executing instructions, stored in a memory device, operable to cause the user equipment to: communicate, using a single Internet Protocol (IP) address, with a server associated with an access point name (APN) simultaneously via a cellular access technology and an untrusted non-cellular access technology, wherein the IP address is obtained by the user equipment from the gateway when the mobile device attaches to the gateway to communicate using the wireless cellular access technology and wherein the user equipment requests the same IP address from the gateway when the user equipment attaches to the gateway to communicate using the wireless non-cellular access technology, wherein the gateway is to send an acknowledgement to an enhanced packet data gateway (ePDG) confirming allocation of the same IP address for the mobile device when the user equipment attaches to the gateway to communicate using the wireless non-cellular access technology, select, using a single traffic flow template (TFT), applicable for the cellular access technology and the untrusted non-cellular access technology, received from the gateway, the wireless cellular access technology for receiving a first data flow associated with a first application, select, using the TFT, the wireless non-cellular access technology for providing a second data flow associated with a second application, and receive the first data flow and the second data flow simultaneously via the cellular access technology and the non-cellular access technology, wherein the user equipment is configured to attach to the gateway for the non-cellular access technology via the ePDG. ### Claim 20 (depends on 19) The user equipment of claim 19, wherein the user equipment is configured to access the gateway using internet key exchange messages. ### Claim 21 (depends on 19) The user equipment of claim 19, wherein the user equipment is configured to receive an indication from the gateway that a specific data flow should be routed through either the wireless cellular access technology or the wireless non-cellular access technology.