# US 11,910,295 B2 · Apparatus and method for controlling network slice data rate in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,295 B2 - Document ID: US11910295B2 - Status: Granted - Kind: B2 - Application number: 17/140,590 - Filed: 2021-01-04 - Published: 2021-07-08 - Granted: 2024-02-20 - Earliest claimed: 2020-01-06 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Hoyeon Lee; Sangsoo Jeong - Web page: https://patentgrep.com/patent/US11910295B2 ## CPC - H04W 28/22: Negotiating communication rate - H04W 48/06: based on traffic conditions - H04L 47/20: Traffic policing - H04W 28/0268: {using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] (negotiating SLA or negotiating QoS H04W28/24)} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 48/18: Selecting a network or a communication service - H04W 76/12: Setup of transport tunnels - H04W 76/18: Management of setup rejection or failure - 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 The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data rate after a 4th generation (4G) communication system such as long term evolution (LTE). According to various embodiments, a method for operating a network node in a wireless communication system is provided. The method comprises obtaining slice policy information including a maximum data rate, monitoring a data rate of protocol data unit (PDU) sessions associated with the slice, determining whether a sum of data rates of PDU sessions associated with the slice exceeds the maximum data rate, transmitting, to a second network node, a policy enforcement request message for controlling the sum of data rates of the PDU sessions associated with the slice. ## Claims ### Claim 1 A method for operating a policy control function (PCF) in a wireless communication system, the method comprising: obtaining network slice related policy information including a maximum data rate for a network slice of a single-network slice selection assistance information (S-NSSAI), wherein the maximum data rate includes a maximum bit rate (MBR) of guaranteed bitrate (GBR) Quality of Service (QOS) flows and an aggregate maximum bit rate (AMBR) of non-guaranteed bitrate (non-GBR) QoS flows; monitoring a data rate associated with the network slice; determining whether the data rate associated with the network slice exceeds the maximum data rate; reducing the AMBR of the non-GBR QoS flows not to exceed the maximum data rate in case that it is determined that the data rate associated with the network slice exceeds the maximum data rate, to control the data rate associated with the network slice; and transmitting, to a session management function (SMF), a policy update request message including the reduced AMBR. ### Claim 2 (depends on 1) The method of claim 1, wherein the transmitting of the policy update request message comprises: in case that it is determined that the data rate associated with the network slice exceeds the maximum data rate, transmitting, to the SMF, the policy update request message including the data rate associated with the network slice. ### Claim 3 (depends on 1) The method of claim 1, wherein the transmitting of the policy update request message comprises: transmitting, to the SMF, the policy update request message indicating a rejection of an establishment of a protocol data unit (PDU) session associated with the network slice, and wherein the policy update request message indicates the S-NSSAI of the network slice. ### Claim 4 (depends on 1) The method of claim 1, wherein the data rate associated with the network slice is a sum of data rates of all protocol data unit (PDU) sessions associated with the network slice. ### Claim 5 (depends on 3) The method of claim 3, wherein the policy update request message includes a cause value or an indication associated with the rejection of the establishment of the PDU session associated with the network slice. ### Claim 6 (depends on 1) The method of claim 1, wherein the transmitting of the policy update request message comprises: transmitting, to the SMF, the policy update request message indicating a rejection of a registration of a user equipment which requested the network slice, and wherein the policy update request message indicates the S-NSSAI of the network slice. ### Claim 7 An apparatus of a policy control function (PCF) in a wireless communication system, the apparatus of the PCF comprising: a transceiver; and at least one processor configured to: obtain network slice related policy information including a maximum data rate for a network slice of a single-network slice selection assistance information (S-NSSAI), wherein the maximum data rate includes a maximum bit rate (MBR) of guaranteed bitrate (GBR) Quality of Service (QOS) flows and an aggregate maximum bit rate (AMBR) of non-guaranteed bitrate (non-GBR) QOS flows, monitor a data rate associated with the network slice, determine whether the data rate associated with the network slice exceeds the maximum data rate, reducing the AMBR of the non-GBR QoS flows not to exceed the maximum data rate, in case that it is determined that the data rate associated with the network slice exceeds the maximum data rate, to control the data rate associated with the network slice, and transmit, to a session management function (SMF), a policy update request message including the reduced AMBR. ### Claim 8 (depends on 7) The apparatus of the PCF of claim 7, wherein, to transmit the policy update request message, the at least one processor is further configured to: in case that it is determined that the data rate associated with the network slice exceeds the maximum data rate, transmit, to the SMF, the policy update request message including the data rate associated with the network slice. ### Claim 9 (depends on 7) The apparatus of the PCF of claim 7, wherein, to transmit the policy update request message, the at least one processor is further configured to: transmit, to the SMF, the policy update request message indicating a rejection of an establishment of a protocol data unit (PDU) session associated with the network slice, and wherein the policy update request message indicates the S-NSSAI of the network slice. ### Claim 10 (depends on 7) The apparatus of the PCF of claim 7, wherein the data rate associated with the network slice is a sum of data rates of all protocol data unit (PDU) sessions associated with the network slice. ### Claim 11 (depends on 9) The apparatus of the PCF of claim 9, wherein the policy update request message includes a cause value or an indication associated with the rejection of the establishment of the PDU session associated with the network slice. ### Claim 12 (depends on 7) The apparatus of the PCF of claim 7, wherein, to transmit the policy update request message, the at least one processor is further configured to: transmit, to the SMF, the policy update request message indicating a rejection of a registration of a user equipment which requested the network slice, and wherein the policy update request message indicates the S-NSSAI of the network slice.