Rate adjustment method and device and processor readable storage medium

Abstract

Provided in an embodiment of the present invention are a rate adjustment method and apparatus, and a processor readable storage medium, the method being applied to a radio access network (RAN) side, the method comprising: a first RAN node sending rate information to a second RAN node; and the second RAN node performs rate adjustment according to the rate information. According to the technical scheme provided by the embodiment of the invention, in the UE-UE communication process, the RAN node is controlled to send the rate information to the RAN node at the opposite side of the communication, so that the two RAN nodes at the opposite side of the communication can carry out rate adjustment and reply information based on the rate information sent by the opposite side, thereby realizing rapid and cooperative rate adjustment between different RAN nodes, and improving the user experience. The transmission efficiency can be effectively improved, and resource waste is avoided.

Description

Technical Field

[0001] The present application relates to the field of wireless access network technology, and in particular to a rate adjustment method, device, and processor-readable storage medium. Background Art

[0002] At present, support is usually configured in the Policy Control Function (hereinafter referred to as "PCF") based on application function (Application Function, hereinafter referred to as "AF") requests and / or operator policies to trigger data transmission rate (Data Rate) monitoring of service data flow (hereinafter referred to as "SDF"). If it is requested by AF, PCF generates a quality of service (Quality of Service, hereinafter referred to as "QoS") monitoring policy (Monitoring Policy) and includes it in the policy and charging control (Policy and Charging Control, hereinafter referred to as "PCC") rules and sends it to the session management function (Session Management Function, hereinafter referred to as "SMF"). SMF configures the user plane function (User Plan Function, hereinafter referred to as "UPF") to perform Data Rate monitoring of QoS Flow. When the UPF measures the Data Rate and reaches or exceeds the indicated reporting threshold, the UPF will send a report to the AF through the user plane, or send a report to the AF through the control plane SMF / PCF / NEF. AF will determine the need to adjust the rate based on the Data Rate reporting information, and configure the adjusted Data Rate to the network.

[0003] The current communication scenario between user equipment (UE) is direct end-to-end communication, which cannot support the coordinated adjustment of the rate between radio access network (RAN) nodes, resulting in low transmission efficiency or transmission failure. Summary of the invention

[0004] In response to the above problems, the present invention proposes a rate adjustment method, device and processor-readable storage medium, aiming to solve the problem that the current UE-UE communication scenario cannot support coordinated rate adjustment, resulting in low transmission efficiency or transmission failure.

[0005] To solve the above problem, according to a first aspect of the present invention, a rate adjustment method is provided, which is applied to a radio access network RAN ​​side, comprising:

[0006] The first RAN node sends rate information to the second RAN node;

[0007] The second RAN node performs rate adjustment according to the rate information.

[0008] Further, the first RAN node sends the rate information to the second RAN node by any one of the following:

[0009] The first RAN node receives a first data packet, and adds the rate information to the first data packet;

[0010] The first RAN node generates a first data packet, and adds the rate information to the first data packet;

[0011] The first RAN node adds the rate information to the first information.

[0012] Further, the rate information is based on the rate adjustment policy configuration in the policy information;

[0013] The policy information is generated by the first network node, and the policy information is used to indicate one or more of the following:

[0014] The rate adjustment policy configuration based on the control plane network element;

[0015] The rate adjustment policy configuration is based on the user plane network element.

[0016] Further, including:

[0017] The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element;

[0018] The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information;

[0019] The rate adjustment strategy of the user plane network element includes the first RAN node forwarding the rate information to the second RAN node through the user plane network element; the rate adjustment strategy of the user plane network element includes the first RAN node receiving the rate information of the second RAN node forwarded through the user plane network element and performing rate adjustment.

[0020] Furthermore, it also includes:

[0021] The first RAN node determines the rate information according to the rate supported by the first RAN node, and / or

[0022] The first RAN node determines the rate information according to a cache time; the cache time is used to indicate a cache time of the received data by the second RAN node.

[0023] Furthermore, it also includes:

[0024] The first RAN node adds an execution time in the first data packet, where the execution time is used to indicate a length of time for which the second RAN node executes and retains the rate information.

[0025] The second RAN node performs rate adjustment according to the rate information, including:

[0026] The second RAN node performs rate adjustment according to a current rate, a rate value indicated by the rate information, and a rate value supported by the second RAN node;

[0027] The rate information is based on the rate adjustment policy configuration in the policy information.

[0028] Furthermore, it also includes:

[0029] The second RAN node sends adjustment confirmation information to the first RAN node according to a result of the rate adjustment by any one of the following:

[0030] The second RAN node receives a second data packet, and adds the adjustment confirmation information to the second data packet;

[0031] The second RAN node generates a second data packet, and adds the adjustment confirmation information into the second data packet.

[0032] Furthermore, it also includes:

[0033] The first RAN node performs rate adjustment according to the adjustment confirmation information.

[0034] According to a second aspect of the present invention, a rate adjustment method is provided, which is applied to a first network node and includes:

[0035] generating policy information;

[0036] sending the policy information to the second network node;

[0037] The policy information is used to indicate a rate adjustment policy configuration based on a control plane network element and / or a rate adjustment policy configuration based on a user plane network element; based on the rate adjustment policy configuration, the first RAN node sends rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

[0038] Further, including:

[0039] The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element;

[0040] The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information;

[0041] The rate adjustment strategy of the user plane network element includes the first RAN node forwarding rate information to the second RAN node through the user plane network element;

[0042] The rate adjustment strategy of the user plane network element includes the first RAN node receiving rate information of the second RAN node forwarded by the user plane network element and performing rate adjustment.

[0043] Furthermore, it also includes:

[0044] generating the policy information based on the AF request information;

[0045] The AF request information at least includes a rate adjustment indication.

[0046] According to a third aspect of the present invention, a rate adjustment device is provided, which is applied to a radio access network RAN ​​side, and includes a memory, a transceiver, and a processor:

[0047] Memory for storing computer programs;

[0048] a transceiver, for transmitting and receiving data under the control of the processor;

[0049] A processor is configured to read the computer program in the memory and perform the following operations:

[0050] The first RAN node sends rate information to the second RAN node;

[0051] The second RAN node performs rate adjustment according to the rate information.

[0052] Further, the first RAN node sends the rate information to the second RAN node by any one of the following:

[0053] The first RAN node receives a first data packet, and adds the rate information to the first data packet;

[0054] The first RAN node generates a first data packet, and adds the rate information to the first data packet;

[0055] The first RAN node adds the rate information to the first information.

[0056] Further, the rate information is based on the rate adjustment policy configuration in the policy information;

[0057] The policy information is generated by the first network node, and the policy information is used to indicate one or more of the following:

[0058] The rate adjustment policy configuration based on the control plane network element;

[0059] The rate adjustment policy configuration is based on the user plane network element.

[0060] Further, including:

[0061] The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element;

[0062] The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information;

[0063] The rate adjustment strategy of the user plane network element includes the first RAN node forwarding rate information to the second RAN node through the user plane network element;

[0064] The rate adjustment strategy of the user plane network element includes the first RAN node receiving rate information of the second RAN node forwarded by the user plane network element and performing rate adjustment.

[0065] Furthermore, it also includes:

[0066] The first RAN node determines the rate information according to the rate supported by the first RAN node, and / or

[0067] The first RAN node determines the rate information according to a cache time; the cache time is used to indicate a cache time of the received data by the second RAN node.

[0068] Furthermore, it also includes:

[0069] The first RAN node adds an execution time in the first data packet, where the execution time is used to indicate a length of time for which the second RAN node executes and retains the rate information.

[0070] Further, the second RAN node performs rate adjustment according to the rate information, including:

[0071] The second RAN node performs rate adjustment according to a current rate, a rate value indicated by the rate information, and a rate value supported by the second RAN node;

[0072] The rate information is based on the rate adjustment policy configuration in the policy information.

[0073] Furthermore, it also includes:

[0074] The second RAN node sends adjustment confirmation information to the first RAN node according to a result of the rate adjustment by any one of the following:

[0075] The second RAN node receives a second data packet, and adds the adjustment confirmation information to the second data packet;

[0076] The second RAN node generates a second data packet, and adds the adjustment confirmation information into the second data packet.

[0077] Furthermore, it also includes:

[0078] The first RAN node performs rate adjustment according to the adjustment confirmation information.

[0079] According to a fourth aspect of the present invention, there is provided a rate adjustment device, applied to a first network node, comprising a memory, a transceiver, and a processor:

[0080] Memory for storing computer programs;

[0081] a transceiver, for transmitting and receiving data under the control of the processor;

[0082] A processor is configured to read the computer program in the memory and perform the following operations:

[0083] generating policy information;

[0084] sending the policy information to the second network node;

[0085] The policy information is used to indicate a rate adjustment policy configuration based on a control plane network element and / or a rate adjustment policy configuration based on a user plane network element; based on the rate adjustment policy configuration, the first RAN node sends rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

[0086] Further, including:

[0087] The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element;

[0088] The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information;

[0089] The rate adjustment strategy of the user plane network element includes the first RAN node forwarding rate information to the second RAN node through the user plane network element;

[0090] The rate adjustment strategy of the user plane network element includes the first RAN node receiving rate information of the second RAN node forwarded by the user plane network element and performing rate adjustment.

[0091] Furthermore, it also includes:

[0092] generating the policy information based on the AF request information;

[0093] The AF request information at least includes a rate adjustment indication.

[0094] According to a fifth aspect of the present invention, there is provided a rate adjustment device, which is applied to a radio access network RAN ​​side, and the device includes:

[0095] A rate information sending module, configured for the first RAN node to send rate information to the second RAN node;

[0096] The rate adjustment module is used for the second RAN node to perform rate adjustment according to the rate information.

[0097] According to a sixth aspect of the present invention, there is provided a rate adjustment device, applied to a first network node, characterized in that the device comprises:

[0098] A strategy information generation module, used for generating strategy information;

[0099] A policy information transmitting module, configured to send the policy information to the second network node;

[0100] The policy information is used to indicate a rate adjustment policy configuration based on a control plane network element and / or a rate adjustment policy configuration based on a user plane network element; based on the rate adjustment policy configuration, the first RAN node sends rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

[0101] According to a seventh aspect of the present invention, there is provided a processor-readable storage medium storing a program for causing the processor to execute the method described in the first and second aspects of the present invention.

[0102] In summary, the embodiments of the present invention provide a rate adjustment method, device and processor-readable storage medium, which are applied to the RAN side of the wireless access network, and the method includes: a first RAN node sends rate information to a second RAN node; the second RAN node adjusts the rate according to the rate information. The technical solution provided by the embodiments of the present invention, in the UE-UE communication process, controls the RAN node to send rate information to the RAN node on the opposite side of the communication, so that the two RAN nodes on the opposite side of the communication can adjust the rate and reply information based on the rate information sent by the other party, thereby realizing rapid coordinated adjustment of the rate between different RAN nodes, which can effectively improve the transmission efficiency and avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0103] Figure 1 It is a schematic diagram of the non-roaming 5G system architecture in the prior art;

[0104] Figure 2 is a flow chart of a rate adjustment method provided by an embodiment of the present invention;

[0105] Figure 3 is a schematic diagram of the interaction between nodes in a rate adjustment method provided according to an embodiment of the present invention;

[0106] Figure 4 is a schematic diagram of the interaction between nodes in a rate adjustment method provided according to another embodiment of the present invention;

[0107] Figure 5 is a schematic diagram of the interaction between nodes in a rate adjustment method provided according to another embodiment of the present invention;

[0108] Figure 6 is a flow chart of a rate adjustment method provided by another embodiment of the present invention;

[0109] Figure 7 is a schematic diagram of the interaction between nodes in a rate adjustment method provided according to another embodiment of the present invention;

[0110] Figure 8 is a schematic structural diagram of a rate adjustment device provided by an embodiment of the present invention;

[0111] Fig. 9 is a structural schematic diagram of a rate adjustment device provided by another embodiment of the present invention;

[0112] Fig.10 It is a structural schematic diagram of a rate adjustment device provided in yet another embodiment of the present invention. DETAILED DESCRIPTION

[0113] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0114] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in one or more embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0115] Figure 1 FIG. 2 shows a schematic diagram of a non-roaming 5G system architecture in the prior art. Figure 1 As shown in the figure, the main network functions in the 5G system architecture are introduced as follows:

[0116] AMF: Access and Mobility Management Function, access and mobility management, access and mobility management functions, registration, connection management, etc.

[0117] UPF: User Plan Function, user plane function. External PDU session node interconnected with the data network, message routing and forwarding.

[0118] SMF: Session Management Function, session management function. Session establishment, deletion, user plane selection and control, UE IP allocation, etc.

[0119] AF: Application Function. Interacts with the 3GPP core network to provide services. Based on the operator's deployment, the trusted AF can interact directly with the relevant NF, while the untrusted AF cannot interact directly with the NF, but should use the public framework through the NEF.

[0120] PCF: Policy Control Function. Supports a unified policy framework to manage network behavior and provide policy rules for control plane NF execution.

[0121] NEF: Network Exposure Function. Provides functions related to securely exposing the services and capabilities provided by the 3GPP network to external networks.

[0122] (R)AN: Radio Access Network.

[0123] The nodes, devices, user planes, and control planes in the 5G system are connected to each other through different interfaces (such as N1, N2, etc.) for communication, data transmission, etc. Among them, the N2 interface is the interface between RAN nodes, which can connect devices from different manufacturers and support communication of multiple protocols.

[0124] In the communication scenario between user equipment (hereinafter referred to as "UE"), that is, the UE-UE communication scenario (through RAN and UPF), when a UPF detects a certain RAN and the Data Rate exceeds the threshold, the UPF sends a report to the AF through the user plane or through the control plane SMF / PCF / NEF. The AF determines the Data Rate that needs to be adjusted, and then configures the adjusted Data Rate to another RAN on the opposite side of the RAN through the control plane network element. To solve the above problems, for 5G XR services, the existing technology requires the RAN node to report the rate to the AF through the core network control plane, and the AF adjusts the rate before configuring it to the network. The problems with this approach include:

[0125] 1) In the scenario of UE-UE communication (media streams between UEs are direct end-to-end communication, that is, only through RAN and UPF, not through application servers), it is impossible to support coordinated rate adjustment between RAN nodes. For example, when one side of the RAN adjusts the rate (for example, the rate drops due to congestion, or the rate recovers / increases), how can the other side of the RAN quickly adjust the rate accordingly to avoid resource waste and affect transmission efficiency, and ensure the service quality and user experience of the UEs at both ends.

[0126] 2) Reporting to AF requires a long communication path (for example, the application server / AF is deployed far away), and the processing speed of the application server / AF is uncontrollable for the network, and rapid rate adjustment cannot be guaranteed.

[0127] In view of the above problems, the embodiments of the present invention provide a rate adjustment method, apparatus and processor-readable storage medium, which control a RAN node to send rate information to a RAN node on the opposite side of communication, so that the two RAN nodes on the opposite side of communication can adjust the rate and reply information based on the rate information sent by the other party, thereby realizing rapid coordinated rate adjustment between different RAN nodes.

[0128] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. An embodiment of the present invention provides a rate adjustment method, which is applied to a wireless access network RAN ​​side. Figure 2 A flow chart of the method is shown in Figure 2 As shown, the method comprises the following steps:

[0129] S2100. The first RAN node sends rate information to the second RAN node.

[0130] S2110. The second RAN node performs rate adjustment according to the rate information.

[0131] RAN for UE-UE communication refers to Radio Access Network (hereinafter referred to as "RAN"). RAN is a part of the mobile communication system, which exists between a device (such as a mobile phone, computer, or any remotely controlled machine) and the Core Network (hereinafter referred to as "CN"), providing communication connection between the two.

[0132] The technical solution provided in this embodiment of the present invention controls the RAN node to send rate information to the RAN node on the opposite side of the communication, so that the two RAN nodes on the opposite side of the communication can adjust the rate based on the rate information sent by the other party, so as to achieve rapid coordinated adjustment of the rates between different RAN nodes, thereby solving the technical problem in the prior art that the RAN nodes on both sides of the communication cannot achieve rate adjustment during the UE-UE communication process.

[0133] According to some optional embodiments, in step S2100, the rate information may be based on the rate adjustment policy configuration in the policy information. The policy information is generated by the first network node, and the first network node is, for example, a control plane network element PCF. The policy information is used to indicate the rate adjustment policy configuration based on the control plane network element and / or the rate adjustment policy configuration based on the user plane network element.

[0134] The embodiment of the present disclosure also shows a specific configuration method of the rate adjustment strategy. Among them, the rate adjustment strategy of the control plane network element can be: the first RAN node forwards the rate information to the second RAN node through the control plane network element; or sends the rate information to the control plane network element through the first information.

[0135] According to certain optional embodiments, the rate adjustment strategy of the user plane network element may be: the first RAN node forwards the rate information to the second RAN node through the user plane network element; or the first RAN node receives the rate information forwarded by the second RAN node through the user plane network element and performs rate adjustment.

[0136] According to some optional embodiments, the first RAN node may send the rate information to the second RAN node in any of the following ways:

[0137] (1) The first RAN node receives the first data packet and adds rate information to the first data packet. For example, the first RAN node may add the rate information through a GTP-U header of an uplink data packet.

[0138] (2) The first RAN node generates a first data packet and adds rate information to the first data packet. When the first RAN node has no data packet to send, the rate information can be sent by generating a Dummy GTP-U Packet and adding the rate information to the header of the Dummy GTP-U to indicate the changed rate.

[0139] (3) The first RAN node adds the rate information to the first message. According to the rate adjustment strategy of the control plane network element involved in the above embodiment, the first message may be an N2 message or other information that can carry the rate information. Further, the first RAN node may send the rate information to the control plane network element via an N2 message, so that the control plane network element AMF or SMF configures the updated rate information to the second RAN node.

[0140] According to some optional embodiments, in the above step S2100, the first RAN node may determine the rate information according to the rate it supports. Optionally, the first RAN node may also determine the rate information according to the buffer time. The buffer time is used to indicate the buffer time of the second RAN node or the opposite UE for the received data. The buffer time may be stored locally by the first RAN node, or sent to the second RAN node of the opposite end through the control plane network element AMF (or through SMF) by sending an N2 message. For example, if the average rate required by QoS is 10Mbit / s, and the buffer time of the opposite second RAN node or the opposite UE is 10s, the first RAN node changes the rate to 5Mb / s according to the communication resources and / or connection conditions, and the duration of this rate is 5s, and then changes the rate to 15Mb / s, and the duration of this rate is 5s, thereby ensuring that the total average rate within 10s is 10Mb / s, meeting the QoS requirements.

[0141] According to certain optional embodiments, the first RAN node may also add an enforcement duration in the first data packet, and the enforcement duration is used to indicate the length of time that the second RAN node maintains the enforcement rate information. For example, if the rate prompted by the rate adjustment policy is lower than the current rate, the first RAN node may add an enforcement duration in the GTP-U header. For example, if the enforcement time is 5s, the corresponding second RAN node receiving the information changes the rate to 5Mbit / s and maintains this rate for 5s. By adding the enforcement time, it can be ensured that the total average rate over a certain length of time meets the QoS requirements. The first RAN node sets the destination address to the identifier of the peer UE (e.g., the IP address of the peer UE).

[0142] According to some optional embodiments, in the above step S2110, the second RAN node may perform rate adjustment according to the current rate, the rate value indicated by the received rate information, and the rate value supported by the second RAN node. The rate information is configured based on the rate adjustment policy in the policy information involved in the above embodiment. Further, the second RAN node may also send adjustment confirmation information to the first RAN node according to the result of the rate adjustment through any of the following: the second RAN node receives the second data packet and adds the adjustment confirmation information to the second data packet; the second RAN node generates the second data packet and adds the adjustment confirmation information to the second data packet.

[0143] For example, if the rate indicated by the rate information received by the second RAN node is lower than the current rate, the second RAN node adjusts the current rate to the indicated rate; if an enforcement time (enforcement duration) is provided in the received first data packet, the rate is maintained for the time length indicated by the enforcement time.

[0144] For example, if the rate indicated by the rate information received by the second RAN node is higher than the current rate, the second RAN node determines that it can support the indicated rate, then adjusts the current rate to the indicated rate, and sends adjustment confirmation information to the first RAN node, confirming that it can be adjusted to the indicated rate in the adjustment confirmation information. The adjustment confirmation information can be added to the GTP-U header of the uplink data packet and sent to the first RAN node; or, when the second RAN node has no data packet to send, the adjustment confirmation information can be sent by generating an uplink Dummy GTP-U Packet, and the adjustment confirmation information is added to the GTP-U header. At this time, the second RAN node sets the destination address to the identifier of the opposite UE (the IP address of the opposite UE). If the rate indicated by the rate information received by the second RAN node is higher than the current rate, the second RAN node determines that it cannot support the indicated rate, then the second RAN node maintains the current rate or adjusts it to the highest rate that can be supported, and sends the adjustment confirmation information to the first RAN node, confirming the rate mismatch information and the inability to adjust to the indicated rate in the adjustment confirmation information. Optionally, the adjustment confirmation information may also include the current rate of the second RAN node (if the rate has been adjusted, it includes the adjusted current rate).

[0145] According to some optional embodiments, after receiving the adjustment confirmation information, the first RAN node performs rate adjustment according to the adjustment confirmation information. For example, if the adjustment confirmation information sent by the second RAN node received by the first RAN node includes rate mismatch information and the current rate of the second RAN node, the first RAN node adjusts the rate to the same rate as that of the second RAN node; if the adjustment confirmation information does not include the current rate of the second RAN node, the first RAN node restores the initially negotiated rate or does not perform rate adjustment.

[0146] The rate adjustment method provided in the above embodiment of the present invention is described below with specific examples. Figure 3 FIG. 1 is a schematic diagram showing the interaction of various nodes in a rate adjustment method provided according to an embodiment of the present invention. In this embodiment, the first RAN node adds rate information to the GTP-U header of the uplink data packet and sends it to the second RAN node through the user plane network element. The second RAN node performs corresponding rate adjustment based on the received rate information and sends adjustment confirmation information. Figure 3 As shown, the method comprises the following steps:

[0147] S31. Configure rate adjustment policy and data transmission rate (Data Rate). PCF generates PCC rules (policy information) and sends the PCC rules to the control plane network element SMF, where the PCC rules include rate adjustment policies, so that SMF can configure rate adjustment policies to the RAN node (and UPF) based on the rate adjustment policies or local policies. At the same time, PCF configures the Data Rate to the first RAN node and the first RAN node through SMF and AMF, for example, the Data Rate supports 5Mbit / s, 10Mbit / s and 12Mbit / s.

[0148] S32: Based on the rate adjustment strategy, when the rate supported by the first RAN node changes (for example, from 10 Mbit / s to 5 Mbit / s, or from 10 Mbit / s to 12 Mbit / s), the first RAN node instructs the second RAN node through the user plane network element. In this embodiment, the first RAN node adds rate information through the GTP-U header of the uplink data packet, for example, the rate information is 5 Mbit / s.

[0149] S33. The first RAN node sends the rate information to the second RAN node. The first RAN node can send an uplink data packet GTP-U containing the rate information or generate an uplink Dummy GTP-U Packet (through I-UPF1) to PSA UPF1, PSA UPF1 sends it to PSA UPF2 through the N9 interface, and then UPF2 (through I-UPF2) sends it to the second RAN. If two PDU sessions are locally forwarded through the same UPF, there is no need to forward between PSA UPFs through N9, but PSA UPF directly (through I-UPF2) sends it to the second RAN node.

[0150] S34, when the second RAN node receives the rate information of the GTP-U header, it performs corresponding rate adjustment based on the rate information and sends adjustment confirmation information to the first RAN node. The specific rate adjustment process and the content included in the adjustment confirmation information can be performed according to the technical solution provided in the above embodiment of the present invention.

[0151] S35. The first RAN node performs corresponding processing based on the adjustment confirmation information sent by the second RAN node.

[0152] Figure 4FIG. 2 shows a schematic diagram of the interaction of various nodes in a rate adjustment method provided according to another embodiment of the present invention. In this embodiment, the first RAN node generates an uplink dummy GTP-UPacket through an uplink data packet, adds rate information to its GTP-U header, and forwards it to the second RAN node 2 through the control plane network element (for example, there is no SLA between PSA UPF1 and PSA UPF2 and information cannot be transmitted through GTP-U). Figure 4 As shown, the method comprises the following steps:

[0153] S41. Configure rate adjustment policy and Data Rate. The control plane network element PCF generates a PCC rule (policy information) and sends the PCC rule to the control plane network element SMF. The PCC rule includes a rate adjustment policy. The SMF configures the rate adjustment processing rule to the RAN node (and UPF) based on the rate adjustment policy or the local policy. The PCF configures the Data Rate to the first RAN node and the second RAN node through the SMF and the AMF. For example, the Data Rate supports 5 Mbit / s, 10 Mbit / s and 12 Mbit / s.

[0154] S42. Based on the rate adjustment strategy, when the rate supported by the first RAN node changes (for example, from 10Mbit / s to 5Mbit / s, or from 10Mbit / s to 12Mbit / s), the first RAN node adds rate information (for example, the rate information is 5Mbit / s) to its GTP-U header through an uplink data packet or generates an uplink Dummy GTP-U Packet. Optionally, the first RAN node may determine the rate information based on the buffer time. Optionally, if the prompted rate is lower than the current rate, the first RAN node may also add an enforcement time (enforcement duration) to the GTP-U header, and the enforcement time is used to indicate that the rate information remains at the indicated rate for a specific length of time. For the Dummy GTP-UPacket, the first RAN node sets the destination address to the identifier of the opposite UE (for example, the IP address of the opposite UE).

[0155] S43. The first RAN node sends the rate information to the second RAN node through the control plane network element. The first RAN node sends the data packet containing the rate information to PSA UPF1 (through I-UPF1). Based on the rate adjustment policy, PSA UPF1 sends the data packet to the control plane network element (for example, to SMF / I-SMF, or calls Nupf_EventExposure_Notify to send it to NEF / L-NEF or AF). When the control plane network element receives the data packet (determines that PSAUPF2 is the network element that allocates this IP address based on the IP address of the opposite UE), it sends it to PSA UPF2, which then sends it to the second RAN node (through I-UPF2).

[0156] S44, when the second RAN node receives the rate information of the GTP-U header, it performs corresponding rate adjustment based on the rate information, and sends adjustment confirmation information to the first RAN node. This step is processed in the same manner as the corresponding step in the previous embodiment, but the adjustment confirmation information needs to be sent to the first RAN node through the control plane network element.

[0157] Figure 5 FIG. 2 shows a schematic diagram of the interaction of various nodes in a rate adjustment method provided according to another embodiment of the present invention. In this embodiment, the first RAN node sends rate information to the SMF through a control plane network element, and the SMF or PCF determines the rate that needs to be adjusted for the corresponding RAN node (e.g., the second RAN node), and configures the rate information to the corresponding RAN node through a control plane message. Figure 5 As shown, the method comprises the following steps:

[0158] S51, configure rate adjustment policy and Data Rate. The control plane network element PCF generates a PCC rule (policy information) and sends the PCC rule to the control plane network element SMF. The PCC rule includes a rate adjustment policy. The SMF configures the rate adjustment processing rule to the RAN node (and UPF) based on the rate adjustment policy or the local policy. The PCF configures the Data Rate to the first RAN node and the second RAN node through the SMF and the AMF. For example, the Data Rate supports 5 Mbit / s, 10 Mbit / s and 12 Mbit / s.

[0159] S52. Based on the rate adjustment strategy, when the rate supported by the first RAN node changes (for example, from 10 Mbit / s to 5 Mbit / s, or from 10 Mbit / s to 12 Mbit / s), the first RAN node includes the rate information (for example, the rate information is 5 Mbit / s) in the N2 message and sends it to the AMF. The AMF sends the rate information to the SMF through Nsmf_PDUSession_UpdateSMContextRequest.

[0160] S53. Optionally, the SMF may initiate an SM Policy Modification process and send the rate information to the PCF; the PCF updates the PCC rules according to the rate information (and local policy) and replies to the SMF.

[0161] S54, SMF configures the updated Data Rate to the second RAN node (and the first RAN node and UPF(s)) according to the rate information. If step S53 is performed, the SMF determines the updated Data Rate based on the rate information in the updated PCC rule.

[0162] S55. The second RAN node (as well as the first RAN node and UPF(s)) determines whether it can be adjusted to the indicated DataRate, and replies with rate adjustment information to the SMF.

[0163] An embodiment of the present invention further provides a rate adjustment method, which is applied to a first network node. Figure 6 A flow chart of the method is shown in Figure 6 As shown, the method comprises the following steps:

[0164] S6100: Generate policy information. The first network node is, for example, a control plane network element PCF, and the policy information is, for example, a PCC rule generated by the control plane network element PCF. The PCC rule includes a rate adjustment policy, and the rate adjustment policy is used to instruct execution of rate adjustment coordination between RAN nodes.

[0165] According to certain optional embodiments, the method further includes: generating the policy information based on the AF request information, wherein the AF request information at least includes a rate adjustment indication. The control plane network element PCF can generate PCC rules based on the AF request information and / or local policies. For example, the AF sends a request message, and the request message includes a UE address, flow description information, and a rate adjustment indication. The AF can send the request information to the control plane network element NEF by calling the Nnef_AFsessionWithQoS_Update service operation, and the control plane network element NEF calls the Npcf_PolicyAuthorization_Create or Npcf_PolicyAuthorization_Update service operation to send the request information to the control plane network element PCF, and the control plane network element PCF can generate PCC rules based on the AF request information.

[0166] S6110: Send policy information to the second network node. The second network node is, for example, a control plane network element SMF, and the control plane network element PCF may send the policy information to the control plane network element SMF by calling the Npcf_SMPolicyControl_UpdateNotify service operation.

[0167] The policy information is used to indicate a rate adjustment policy configuration based on a control plane network element and / or a rate adjustment policy configuration based on a user plane network element; based on the rate adjustment policy configuration, the first RAN node sends rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information. According to some optional embodiments, the rate adjustment policy based on the control plane network element includes the first RAN node forwarding the rate information to the second RAN node through the control plane network element; and sending the rate information to the control plane network element through the first information. According to some optional embodiments, the rate adjustment policy based on the user plane network element includes the first RAN node forwarding the rate information to the second RAN node through the user plane network element, and the first RAN node receiving the rate information forwarded by the RAN node through the user plane network element and performing rate adjustment.

[0168] The rate adjustment method provided in the above embodiment of the present invention is described below with specific examples. Figure 7A schematic diagram of the interaction of each node in the rate adjustment method provided according to an embodiment of the present invention is shown in FIG. In this embodiment, based on the AF request and / or the operator policy configuration in the PCF, the PCF generates a PCC rule (policy information) containing a rate adjustment policy and sends it to the SMF. The SMF configures the rate adjustment policy to the RAN node and the UPF respectively, and sends the forwarding rule to the control plane network element. In the above embodiments, the rate information sent by the first RAN node to the second RAN node is based on the rate adjustment policy configuration in the policy information. The policy information can be generated based on the technical solution provided in this embodiment and configured to the RAN node and the user plane network element. Figure 7 As shown, the method comprises the following steps:

[0169] S71a, AF sends a request message, which includes UE address, flow description information, and rate adjustment indication. AF calls Nnef_AFsessionWithQoS_Create or Nnef_AFsessionWithQoS_Update service operation to send the request message to NEF.

[0170] S71b. NEF calls Npcf_PolicyAuthorization_Create or Npcf_PolicyAuthorization_Update service operation to send request information to PCF.

[0171] S72. The PCF generates a PCC rule based on the AF request and / or the local policy. The PCC rule includes a rate adjustment policy, which is used to indicate the execution of rate adjustment coordination between RAN nodes. Optionally, the rate information can be forwarded by a user plane network element, or forwarded by a control plane network element, or reported to a control plane network element, which is collaboratively configured by the control plane network element and sent to the SMF by calling the Npcf_SMPolicyControl_UpdateNotify service operation.

[0172] S73. The SMF configures the rate adjustment processing rules to the RAN node (and UPF) based on the rate adjustment policy in the PCC rule. The configuration may be performed in any of the following ways:

[0173] (1) The SMF configures the rate adjustment processing rules to the RAN nodes (the first RAN node and the second RAN node), instructing them to send the supported rates to other RAN nodes through the user plane network element, or to make corresponding adjustments and reply information (adjustment confirmation information) based on the rates received from other RAN nodes.

[0174] (2) If forwarding through the control plane network element is required, the SMF configures the rate adjustment processing rules to the UPF, instructing it to send the uplink data packet containing rate information or reply information (adjustment confirmation information) to the control plane network element. The rules may include the identifier of the control plane network element (for example, SMF / I-SMF or NEF / L-NEF or AF identifier).

[0175] (3) The rate information is sent to the control plane network element AMF / SMF / PCF through the N2 message.

[0176] S74. The SMF sends a forwarding rule to the control plane network element based on the rate adjustment strategy in the PCC rule. If the control plane network element receives an uplink data packet from a specific UE, it assists in forwarding the data to the destination address.

[0177] The embodiment of the present invention further provides a rate adjustment device, which is applied to a radio access network RAN ​​side. Figure 8 The schematic diagram of the structure of the device is shown in FIG. Figure 8 As shown, the device includes a memory 8120, a transceiver 8110 and a processor 8100:

[0178] A memory 8120, used for storing computer programs;

[0179] A transceiver 8110, configured to send and receive data under the control of the processor 8100;

[0180] The processor 8100 is configured to read the computer program in the memory 8120 and perform the following operations:

[0181] The first RAN node sends rate information to the second RAN node;

[0182] The second RAN node performs rate adjustment according to the rate information.

[0183] The embodiment of the present invention further provides a rate adjustment device, which is applied to a radio access network RAN ​​side. Figure 8 The schematic diagram of the structure of the device is shown in FIG. Figure 8 As shown, the device includes a memory 8120, a transceiver 8110 and a processor 8100:

[0184] A memory 8120, used for storing computer programs;

[0185] A transceiver 8110, configured to send and receive data under the control of the processor 8100;

[0186] The processor 8100 is configured to read the computer program in the memory 8120 and perform the following operations:

[0187] The first RAN node sends rate information to the second RAN node;

[0188] The second RAN node performs rate adjustment according to the rate information.

[0189] An embodiment of the present invention further provides a rate adjustment device, which is applied to a first network node. The rate adjustment device provided by the embodiment of the present invention has the same structure as the rate adjustment device applied to the radio access network RAN ​​side provided in the above embodiment, including a memory, a transceiver and a processor:

[0190] Memory for storing computer programs;

[0191] a transceiver for transmitting and receiving data under the control of the processor;

[0192] A processor that reads a computer program from memory and performs the following operations:

[0193] generating policy information;

[0194] sending policy information to the second network node;

[0195] Among them, the policy information is used to indicate the rate adjustment policy configuration based on the control plane network element and / or the rate adjustment policy configuration based on the user plane network element; based on the rate adjustment policy configuration, the first RAN node sends the rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

[0196] It should be noted here that the above-mentioned rate adjustment device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned rate adjustment method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0197] Among them, Figure 8In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 8100 and various circuits of the memory represented by the memory 8120 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 8110 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 8100 is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor 8100 when performing operations. The processor 8100 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may also adopt a multi-core architecture.

[0198] The embodiment of the present invention further provides a rate adjustment device, which is applied to a radio access network RAN ​​side. Fig. 9 The schematic diagram of the structure of the device is shown in FIG. Fig. 9 As shown, the device comprises:

[0199] The rate information sending module 9100 is used for the first RAN node to send rate information to the second RAN node.

[0200] The rate adjustment module 9110 is used for the second RAN node to perform rate adjustment according to the rate information.

[0201] An embodiment of the present invention further provides a rate adjustment device, which is applied to a first network node. Fig.10 The schematic diagram of the structure of the device is shown in FIG. Fig.10 As shown, the device comprises:

[0202] The policy information generating module 10100 is used to generate policy information.

[0203] The policy information sending module 10110 is configured to send policy information to the second network node.

[0204] Among them, the policy information is used to indicate the rate adjustment policy configuration based on the control plane network element and / or the rate adjustment policy configuration based on the user plane network element; based on the rate adjustment policy configuration, the first RAN node sends the rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

[0205] It should be noted here that the above-mentioned rate adjustment device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned rate adjustment method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0206] An embodiment of the present invention further provides a processor-readable storage medium, which stores a program, and the program is used to enable the processor to execute the rate adjustment method involved in the above embodiment of the present invention. The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.

[0207] In summary, the embodiments of the present invention relate to a rate adjustment method, device and processor-readable storage medium, which are applied to the RAN side of a wireless access network, and the method includes: a first RAN node sends rate information to a second RAN node; the second RAN node performs rate adjustment according to the rate information. The technical solution provided by the embodiments of the present invention controls the RAN node to send rate information to the RAN node on the opposite side of the communication during UE-UE communication, so that the two RAN nodes on the opposite side of the communication can perform rate adjustment and reply information based on the rate information sent by the other party, thereby realizing rapid coordinated rate adjustment between different RAN nodes, which can effectively improve transmission efficiency and avoid resource waste.

[0208] It should be understood that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention (including claims) is limited to these examples; under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of one or more embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. The above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the scope of protection of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A rate adjustment method, applied to a radio access network RAN ​​side, characterized in that: include: The first RAN node sends rate information to the second RAN node; The second RAN node performs rate adjustment according to the rate information.

2. The method according to claim 1, characterized in that The first RAN node sends the rate information to the second RAN node by any one of the following: The first RAN node receives a first data packet, and adds the rate information to the first data packet; The first RAN node generates a first data packet, and adds the rate information to the first data packet; The first RAN node adds the rate information to the first information.

3. The rate adjustment method according to claim 1 or 2, characterized in that: The rate information is based on the rate adjustment policy configuration in the policy information; The policy information is generated by the first network node, and the policy information is used to indicate one or more of the following: The rate adjustment policy configuration based on the control plane network element; The rate adjustment policy configuration is based on the user plane network element.

4. The method according to claim 3, characterized in that include: The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element; The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information; The rate adjustment strategy of the user plane network element includes the first RAN node forwarding rate information to the second RAN node through the user plane network element; The rate adjustment strategy of the user plane network element includes the first RAN node receiving rate information of the second RAN node forwarded by the user plane network element and performing rate adjustment.

5. The method according to claim 1 or 2, characterized in that: Also includes: The first RAN node determines the rate information according to the rate supported by the first RAN node, and / or The first RAN node determines the rate information according to a cache time, where the cache time is used to indicate a cache time for the second RAN node to cache the received data.

6. The method according to claim 5, characterized in that Also includes: The first RAN node adds an execution time in the first data packet, where the execution time is used to indicate a length of time for which the second RAN node executes and retains the rate information.

7. The method according to claim 1, characterized in that The second RAN node performs rate adjustment according to the rate information, including: The second RAN node performs rate adjustment according to a current rate, a rate value indicated by the rate information, and a rate value supported by the second RAN node; The rate information is based on the rate adjustment policy configuration in the policy information.

8. The method according to claim 1, characterized in that Also includes: The second RAN node sends adjustment confirmation information to the first RAN node according to a result of the rate adjustment by any one of the following: The second RAN node receives a second data packet, and adds the adjustment confirmation information to the second data packet; The second RAN node generates a second data packet, and adds the adjustment confirmation information into the second data packet.

9. The method according to claim 8, characterized in that Also includes: The first RAN node performs rate adjustment according to the adjustment confirmation information.

10. A rate adjustment method, applied to a first network node, characterized in that: include: generating policy information; sending the policy information to the second network node; The policy information is used to indicate a rate adjustment policy configuration based on a control plane network element and / or a rate adjustment policy configuration based on a user plane network element; based on the rate adjustment policy configuration, the first RAN node sends rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

11. The method according to claim 10, characterized in that include: The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element; The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information; The rate adjustment strategy of the user plane network element includes the first RAN node forwarding rate information to the second RAN node through the user plane network element; The rate adjustment strategy of the user plane network element includes the first RAN node receiving rate information of the second RAN node forwarded by the user plane network element and performing rate adjustment.

12. The method according to claim 10, characterized in that Also includes: generating the policy information based on the AF request information; The AF request information at least includes a rate adjustment indication.

13. A rate adjustment device, applied to a radio access network RAN ​​side, characterized in that: Includes memory, transceiver and processor: Memory for storing computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: The first RAN node sends rate information to the second RAN node; The second RAN node performs rate adjustment according to the rate information.

14. The device according to claim 13, characterized in that The first RAN node sends the rate information to the second RAN node by any one of the following: The first RAN node receives a first data packet, and adds the rate information to the first data packet; The first RAN node generates a first data packet, and adds the rate information to the first data packet; The first RAN node adds the rate information to the first information.

15. The device according to claim 13 or 14, characterized in that The rate information is based on the rate adjustment policy configuration in the policy information; The policy information is generated by the first network node, and the policy information is used to indicate one or more of the following: The rate adjustment policy configuration based on the control plane network element; The rate adjustment policy configuration is based on the user plane network element.

16. The device according to claim 15, characterized in that include: The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element; The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information; The rate adjustment strategy of the user plane network element includes the first RAN node forwarding rate information to the second RAN node through the user plane network element; The rate adjustment strategy of the user plane network element includes the first RAN node receiving rate information of the second RAN node forwarded by the user plane network element and performing rate adjustment.

17. The device according to claim 13 or 14, characterized in that Also includes: The first RAN node determines the rate information according to the rate supported by the first RAN node, and / or The first RAN node determines the rate information according to a cache time; the cache time is used to indicate a cache time of the received data by the second RAN node.

18. The device according to claim 17, characterized in that Also includes: The first RAN node adds an execution time in the first data packet, where the execution time is used to indicate a length of time for which the second RAN node executes and retains the rate information.

19. The device according to claim 13, characterized in that The second RAN node performs rate adjustment according to the rate information, including: The second RAN node performs rate adjustment according to a current rate, a rate value indicated by the rate information, and a rate value supported by the second RAN node; The rate information is based on the rate adjustment policy configuration in the policy information.

20. The device according to claim 13, characterized in that Also includes: The second RAN node sends adjustment confirmation information to the first RAN node according to a result of the rate adjustment by any one of the following: The second RAN node receives a second data packet, and adds the adjustment confirmation information to the second data packet; The second RAN node generates a second data packet, and adds the adjustment confirmation information into the second data packet.

21. The device according to claim 20, characterized in that Also includes: The first RAN node performs rate adjustment according to the adjustment confirmation information.

22. A rate adjustment device, applied to a first network node, characterized in that: Includes memory, transceiver and processor: Memory for storing computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: generating policy information; sending the policy information to the second network node; The policy information is used to indicate a rate adjustment policy configuration based on a control plane network element and / or a rate adjustment policy configuration based on a user plane network element; based on the rate adjustment policy configuration, the first RAN node sends rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

23. The device according to claim 22, characterized in that include: The rate adjustment strategy of the control plane network element includes the first RAN node forwarding rate information to the second RAN node through the control plane network element; The rate adjustment strategy of the control plane network element includes sending rate information to the control plane network element through first information; The rate adjustment strategy of the user plane network element includes the first RAN node forwarding rate information to the second RAN node through the user plane network element; The rate adjustment strategy of the user plane network element includes the first RAN node receiving rate information of the second RAN node forwarded by the user plane network element and performing rate adjustment.

24. The device according to claim 22, characterized in that Also includes: generating the policy information based on the AF request information; The AF request information at least includes a rate adjustment indication.

25. A rate adjustment device, applied to a radio access network RAN ​​side, characterized in that: The device comprises: A rate information sending module, configured for the first RAN node to send rate information to the second RAN node; The rate adjustment module is used for the second RAN node to perform rate adjustment according to the rate information.

26. A rate adjustment device, applied to a first network node, characterized in that: The device comprises: A strategy information generation module, used for generating strategy information; A policy information sending module, configured to send the policy information to the second network node; The policy information is used to indicate a rate adjustment policy configuration based on a control plane network element and / or a rate adjustment policy configuration based on a user plane network element; based on the rate adjustment policy configuration, the first RAN node sends rate information to the second RAN node, and the second RAN node performs rate adjustment according to the rate information.

27. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a program, and the program is used to enable the processor to execute the method according to any one of claims 1 to 12.

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