# US 2018/0324087 A1 · Method and system for routing rule transmission, and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324087 A1 - Document ID: US20180324087A1 - Status: Published application - Kind: A1 - Application number: 16/036,557 - Filed: 2018-07-16 - Published: 2018-11-08 - Earliest claimed: 2016-01-19 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Huan LI; Youyang YU - Web page: https://patentgrep.com/patent/US20180324087A1 ## CPC - H04L 45/38: {Flow based routing} - H04W 76/12: Setup of transport tunnels - H04L 45/655: Interaction between route computation entities and forwarding entities, e.g. for route determination or for flow table update - H04M 15/66: {Policy and charging system} - H04W 8/12: between location registers or mobility servers - H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer - 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 88/16: Gateway arrangements - 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) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract Embodiments of the present application provide a method and a system for routing rule transmission, and a device. The method includes: sending, by a terminal, an NBIFOM routing rule request to a gateway device through an intermediate network device; sending, by the gateway device, at least one routing rule to the terminal through the intermediate network device according to the NBIFOM routing rule request; sending, by the terminal, routing rule acknowledgement indication information to the gateway device through the intermediate network device according to the at least one received routing rule; and determining, by the gateway device according to the routing rule acknowledgement indication information, a routing rule rejected by the terminal in the at least one routing rule, so that the gateway device transmits a traffic flow by using a routing rule other than the routing rule rejected by the terminal in the at least one routing rule. ## Claims ### Claim 1 A method for routing rule transmission, comprising: receiving, by an intermediate network device, a network based IP flow mobility (NBIFOM) routing rule request from a terminal, and sending the NBIFOM routing rule request to a gateway device; receiving, by the intermediate network device, an NBIFOM container containing K routing rules from the gateway device, and sending the NBIFOM container having the K routing rules to the terminal, wherein K is an integer greater than or equal to 1; and receiving, by the intermediate network device, routing rule acknowledgement indication information from the terminal, and sending the routing rule acknowledgement indication information to the gateway device, wherein the routing rule acknowledgement indication information comprises first indication information or second indication information, wherein the first indication information is used to indicate that the terminal accepts the K routing rules, and wherein the second indication information is used to indicate that the terminal rejects at least one of the K routing rules. ### Claim 2 (depends on 1) The method according to claim 1, wherein the sending, by the intermediate network device, the NBIFOM container having the K routing rules to the terminal comprises: if third indication information is received from the gateway device, sending, by the intermediate network device, a first request message to the terminal, wherein the first request message includes the NBIFOM container having the K routing rules, and wherein the third indication information is used to instruct the intermediate network device to send an NBIFOM container to the terminal using a request message. ### Claim 3 (depends on 2) The method according to claim 2, wherein the first request message is a request secondary packet data protocol (PDP) context activation message or a modify PDP context request message. ### Claim 4 (depends on 2) The method according to claim 2, wherein the method further comprises: receiving, by the intermediate network device, the third indication information from the gateway device. ### Claim 5 (depends on 4) The method according to claim 4, wherein the third indication information is carried in a create session response message, and the NBIFOM container containing the K routing rules is carried in a create bearer request message or an update bearer request message. ### Claim 6 (depends on 4) The method according to claim 4, wherein after the receiving, by the intermediate network device, the third indication information from the gateway device, the method further comprises: storing, by the intermediate network device, the third indication information. ### Claim 7 (depends on 1) The method according to claim 1, wherein the method further comprises: sending, by the intermediate network device, an acknowledgement message to the terminal, wherein the acknowledgement message does not carry the NBIFOM container containing the K routing rules, and the acknowledgement message is used to acknowledge reception of the NBIFOM routing rule request sent by the terminal. ### Claim 8 A method for routing rule transmission, comprising: receiving, by a gateway device, mode indication information from a policy and charging rules function (PCRF), wherein the mode indication information is used to indicate a mode of a packet data network (PDN) connection of a terminal; when the mode indication information indicates that the PDN connection of the terminal is in a network-initiated network based IP flow mobility (NBIFOM) mode, sending, by the gateway device, third indication information to an intermediate network device, wherein the third indication information is used to instruct the intermediate network device to send an NBIFOM container to the terminal using a request message; receiving, by the gateway device, an NBIFOM routing rule request; and sending, by the gateway device according to the NBIFOM routing rule request, an NBIFOM container containing K routing rules to the intermediate network device, wherein K is an integer greater than or equal to 1. ### Claim 9 (depends on 8) The method according to claim 8, wherein the third indication information is carried in a create session response message and sent to the intermediate network device. ### Claim 10 An intermediate network device, comprising a first communications interface, a second communications interface, a processor, and a memory, wherein the memory is configured to store program code for performing a method for routing rule transmission; and the processor is configured to invoke the program code in the memory to perform: receiving, via the first communications interface, a network based IP flow mobility (NBIFOM) routing rule request from a terminal, and sending the NBIFOM routing rule request to a gateway device by using the second communications interface; receiving, via the second communications interface, an NBIFOM container containing K routing rules from the gateway device, and sending, using the first communications interface, the NBIFOM container containing the K routing rules to the terminal, wherein K is an integer greater than or equal to 1; and receiving, via the first communications interface, routing rule acknowledgement indication information from the terminal, and sending the routing rule acknowledgement indication information to the gateway device by using the second communications interface, wherein the routing rule acknowledgement indication information comprises first indication information or second indication information, wherein the first indication information is used to indicate that the terminal accepts the K routing rules, and wherein the second indication information is used to indicate that the terminal rejects at least one of the K routing rules. ### Claim 11 (depends on 10) The intermediate network device according to claim 10, wherein the processor is further configured to determine whether third indication information is received from the gateway device, wherein the third indication information is used to instruct the intermediate network device to send an NBIFOM container to the terminal by using a request message; and when sending, by using the first communications interface, the NBIFOM container containing the K routing rules to the terminal, the processor is further configured to send a first request message to the terminal via the first communications interface if it is determined that the third indication information is received from the gateway device, wherein the first request message includes the NBIFOM container having the K routing rules. ### Claim 12 (depends on 11) The intermediate network device according to claim 11, wherein the first request message is a request secondary packet data protocol (PDP) context activation message or a modify PDP context request message. ### Claim 13 (depends on 11) The intermediate network device according to claim 11, wherein the processor is further configured to receive the third indication information from the gateway device by using the second communications interface. ### Claim 14 (depends on 13) The intermediate network device according to claim 13, wherein the third indication information is carried in a create session response message, and the NBIFOM container containing the K routing rules is carried in a create bearer request message or an update bearer request message. ### Claim 15 (depends on 13) The intermediate network device according to claim 13, wherein after receiving the third indication information from the gateway device via the second communications interface, the processor is further configured to store the third indication information. ### Claim 16 (depends on 10) The intermediate network device according to claim 10, wherein the processor is further configured to send an acknowledgement message to the terminal via the first communications interface, wherein the acknowledgement message does not carry the NBIFOM container comprising the K routing rules, and the acknowledgement message is used to acknowledge reception of the NBIFOM routing rule request sent by the terminal. ### Claim 17 A gateway device, comprising a first communications interface, a second communications interface, a processor, and a memory, wherein the memory is configured to store program code for performing a method for routing rule transmission; and the processor is configured to invoke the program code in the memory to perform: receiving, via the first communications interface, mode indication information from a policy and charging rules function (PCRF), wherein the mode indication information is used to indicate a mode of a packet data network (PDN) connection of a terminal; when the mode indication information indicates that the PDN connection of the terminal is in a network-initiated network based IP flow mobility (NBIFOM) mode, sending third indication information to an intermediate network device via the second communications interface, wherein the third indication information is used to instruct the intermediate network device to send an NBIFOM container to the terminal using a request message; receiving an NBIFOM routing rule request via the second communications interface; and sending, according to the NBIFOM routing rule request, an NBIFOM container containing K routing rules to the intermediate network device via the second communications interface, wherein K is an integer greater than or equal to 1. ### Claim 18 (depends on 17) The gateway device according to claim 17, wherein the third indication information is carried in a create session response message and sent to the intermediate network device.