# US 11,115,916 B2 · Data transmission method, terminal, and access-network network element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,916 B2 - Document ID: US11115916B2 - Status: Granted - Kind: B2 - Application number: 16/533,039 - Filed: 2019-08-06 - Published: 2019-11-28 - Granted: 2021-09-07 - Earliest claimed: 2017-02-07 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Weisheng Jin - Web page: https://patentgrep.com/patent/US11115916B2 ## CPC - H04W 48/16: Discovering, processing access restriction or access information - H04W 48/18: Selecting a network or a communication service - H04M 15/66: {Policy and charging system} - H04W 8/08: Mobility data transfer - H04W 76/11: Allocation or use of connection identifiers - H04W 76/25: Maintenance of established connections - H04W 80/10: adapted for {application} session management, e.g. SIP [Session Initiation Protocol] {(connection management H04W76/00; arrangements for session management H04L67/14)} - H04W 80/12: Application layer protocols, e.g. WAP [Wireless Application Protocol] - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - 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) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A data transmission method, a terminal, and an access-network network element are disclosed. An interface is disposed on a policy client of UE and an operating system or an application layer of the UE. The interface is used to provide the operating system or the application layer with a policy related to the operating system or the application layer, and collect, from the operating system or the application layer, information required for a report. In this way, a dedicated transport channel is implemented by a bottom layer of the UE, reports and policies are transmitted on the dedicated transport channel, and during implementation, a protocol is not coupled with the application layer or the operating system, so that the system is simple to implement. ## Claims ### Claim 1 A data transmission method, comprising: receiving, by a hardware layer of a terminal, a policy from a policy control function (PCF) through a dedicated transport channel between the PCF and the terminal, the dedicated transport channel implemented by the hardware layer, and dedicated to transmitting policies from the PCF to the terminal; and sending, by a policy client on the hardware layer, a policy related to an operating system of the terminal to the operation system through an interface between the policy client and the operating system; or sending, by the policy client, a policy related to an application layer of the terminal to the application layer through an interface between the policy client and the application layer. ### Claim 2 (depends on 1) The method according to claim 1, wherein the dedicated transport channel is non-access stratum (NAS) signaling. ### Claim 3 (depends on 1) The method according to claim 1, wherein the policy is a slice selection policy, the slice selection policy comprises a trigger condition, a slice identifier, and an application identifier corresponding to an application in the application layer, and the trigger condition comprises one or more of a designated location, a designated access network type, or a designated time period; and the method further comprises: accessing, by the application in case that the trigger condition is satisfied, a slice corresponding to the slice identifier. ### Claim 4 (depends on 1) The method according to claim 1, wherein the policy is a session continuity policy, the session continuity policy comprises a trigger condition, a session and service continuity (SSC) mode identifier, and an application identifier corresponding to an application in the application layer, and the trigger condition comprises one or more of a designated location, a designated access network type, and a designated time period; and the method further comprises: associating, by the application in case that the trigger condition is satisfied, with an SSC mode corresponding to the SSC mode identifier. ### Claim 5 (depends on 1) The method according to claim 1, wherein the hardware layer of the terminal is implemented through a baseband chip. ### Claim 6 A terminal, comprising: a hardware layer, an application layer, an operating system and one of: an interface between a policy client on the hardware layer of the terminal and the application layer, or an interface between the policy client and the operating system; wherein the hardware layer is configured to receive a policy from a policy control function (PCF) through a dedicated transport channel between the PCF and the terminal, the dedicated transport channel is implemented by the hardware layer of the terminal, and is dedicated to transmitting a policy from the PCF to the terminal; wherein the policy client is configured to send a policy related to the operating system to the operating system through the interface between the policy client and the operating system, or to send a policy related to the application layer to the application layer through the interface between the policy client and the application layer. ### Claim 7 (depends on 6) The terminal according to claim 6, wherein the dedicated transport channel is non-access stratum (NAS) signaling. ### Claim 8 (depends on 6) The terminal according to claim 6, wherein the policy is a slice selection policy, the slice selection policy comprises a trigger condition, a slice identifier, and an application identifier corresponding to an application in the application layer, and the trigger condition comprises one or more of a designated location, a designated access network type, or a designated time period; wherein the application in the application layer is configured to access a slice corresponding to the slice identifier in case that the trigger condition is satisfied. ### Claim 9 (depends on 6) The terminal according to claim 6, wherein the policy is a session continuity policy, the session continuity policy comprises a trigger condition, a session and service continuity (SSC) mode identifier, and an application identifier corresponding to an application in the application layer, and the trigger condition comprises one or more of a designated location, a designated access network type, and a designated time period; and wherein the application in the application layer is configured to associate with an SSC mode corresponding to the SSC mode identifier in case that the trigger condition is satisfied. ### Claim 10 (depends on 6) The terminal according to claim 6, wherein the hardware layer of the terminal comprises a baseband chip.