Link selection method, communication apparatus, and storage medium

Abstract

Provided are a link selection method, a communication apparatus, and a storage medium. The method comprises: sending to an access network device configuration information of access network auxiliary information; and receiving the access network auxiliary information from the access network device, the access network auxiliary information being used by a core network device to determine a transmission link and / or a transmission mode used for performing data transmission with a user equipment (UE).

Description

Link selection method, communication device and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202411599443.7, filed on November 8, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a link selection method, communication device and storage medium. Background Technology

[0003] As the number of digital data applications and services continues to surge, the demands and challenges on network resources and operators will continue to increase. Delivering the diverse network performance characteristics required for future services is one of the major technical challenges facing service providers today. Network performance requirements primarily include connection data rates, latency, quality of service, security, and availability, and these requirements vary from service to service. The 5G network standard introduced by the 3rd Generation Partnership Project (3GPP) will continue to evolve towards 6G network standards and even higher versions, but network version upgrades are not instantaneous, and the coexistence of multiple standards will be a long-term phenomenon. Summary of the Invention

[0004] This disclosure provides a link selection method, a communication device, and a storage medium.

[0005] On one hand, embodiments of this disclosure provide a link selection method applied to core network equipment, the method comprising:

[0006] Configuration information for sending access network auxiliary information to access network devices;

[0007] Receive access network auxiliary information from access network equipment; access network auxiliary information is used by core network equipment to determine the transmission link and / or transmission standard used when transmitting data with user equipment (UE).

[0008] On the other hand, embodiments of this disclosure provide a link selection method applied to access network devices, the method comprising:

[0009] Receive configuration information from access network auxiliary information from core network equipment;

[0010] Based on the configuration information, access network auxiliary information is sent to the core network equipment; the access network auxiliary information is used to enable the core network equipment to determine the transmission link and / or transmission standard used when transmitting data with the UE.

[0011] In another aspect, embodiments of this disclosure provide a link selection method applied to a UE, the method comprising:

[0012] After receiving a link stop transmission indication from the core network equipment or access network equipment, stop using the link for data transmission; or,

[0013] After receiving a standard stop transmission indication message from the core network equipment or access network equipment, stop using the standard for data transmission;

[0014] Data transmission includes:

[0015] The transmission of data streams associated with the indicated QoS flow identifier; or,

[0016] The transmission of data streams associated with the indicated packet priority; or,

[0017] The transmission of data streams associated with the indicated packet type.

[0018] In another aspect, embodiments of this disclosure provide a communication device, including a transmitting module and a receiving module. The transmitting module is used to transmit configuration information of access network auxiliary information to an access network device; the receiving module is used to receive access network auxiliary information from the access network device; the access network auxiliary information is used by the core network device to determine the transmission link and / or transmission standard used when transmitting data with a user equipment (UE).

[0019] In another aspect, embodiments of this disclosure provide a communication device, including a receiving module and a transmitting module. The receiving module is used to receive configuration information from access network auxiliary information of a core network device; the transmitting module is used to send access network auxiliary information to the core network device based on the configuration information; the access network auxiliary information is used to enable the core network device to determine the transmission link and / or transmission standard used when transmitting data with the UE.

[0020] In another aspect, embodiments of this disclosure provide a communication apparatus, including a receiving module. The receiving module is configured to: stop using the link for data transmission after receiving link stop transmission indication information from a core network device or an access network device; or stop using the specified standard for data transmission after receiving standard stop transmission indication information from the core network device or the access network device; the data transmission includes: transmission of a data stream related to an indicated QoS flow identifier; or transmission of a data stream related to an indicated packet priority; or transmission of a data stream related to an indicated packet type.

[0021] In another aspect, embodiments of this disclosure provide a computer-readable storage medium storing computer program instructions that, when executed by a processor, implement the methods described in any of the above aspects.

[0022] In another aspect, embodiments of this disclosure provide a computer program product including computer program instructions that, when executed by a processor, implement the methods described in any of the above aspects. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 is a schematic diagram of a connection scenario according to some embodiments.

[0025] Figure 2 is a schematic diagram of another connection scenario according to some embodiments.

[0026] Figure 3 is a system architecture diagram of a communication system according to some embodiments.

[0027] Figure 4 is a flowchart of a link selection method according to some embodiments.

[0028] Figure 5 is a flowchart of another link selection method according to some embodiments.

[0029] Figure 6 is a flowchart of yet another link selection method according to some embodiments.

[0030] Figure 7 is a structural diagram of a communication device according to some embodiments.

[0031] Figure 8 is a structural diagram of another communication device according to some embodiments.

[0032] Figure 9 is a structural diagram of another communication device according to some embodiments.

[0033] Figure 10 is a structural diagram of another communication device according to some embodiments. Detailed Implementation

[0034] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0035] It should be noted that in this disclosure, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts by way of example.

[0036] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] In the description of this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "more than one" means two or more.

[0038] The main components of the network architecture in related technologies include UEs that support multiple access, radio access equipment base stations, session management functions (SMF) responsible for policy management, user plane functions (UPF) that perform actual traffic operations, policy control functions (PCF) that provide policy decisions, and access and mobility management functions (AMF).

[0039] When a UE establishes communication with the UPF through multiple air interface links, the UPF needs to determine how to allocate downlink traffic across these links based on the policies provided by the application network and feedback information received from the UE. Therefore, in addition to obtaining the policies configured at the application layer, the UPF also needs to understand the current network performance to select an appropriate air interface link for each service flow of the UE.

[0040] Figure 1 is a schematic diagram of a connection scenario according to some embodiments. In Figure 1, the UE accesses the 5G radio access network (RAN) through 5G 3GPP air interface technology and accesses the 6G RAN through 6G 3GPP air interface technology. The two RAN nodes are then connected to the same UPF or AMF.

[0041] Figure 2 is a schematic diagram of another connection scenario according to some embodiments. In Figure 2, the UE accesses a 5G radio unit (RU) or distributed unit (DU) through 5G 3GPP air interface technology, and accesses a 6G RU or DU through 6G 3GPP air interface technology. The two RUs or DUs are then connected to the same centralized unit (CU) that simultaneously supports 5G and 6G functions. The CU is then connected to the UPF or AMF of the core network.

[0042] When UPF sends downlink data to UE, it needs to choose whether to send it via the 5G air interface link or the 6G air interface link. In some embodiments, for the same protocol data unit (PDU) session of the same UE, if it contains multiple data streams, different radio access technologies (RATs) can be selected for transmission for different data streams.

[0043] Current 5G networks introduce the performance measurement function protocol (PMFP) to collect, process, and report various network performance metrics, such as latency, bandwidth, and packet loss rate.

[0044] Taking latency measurement as an example, the UPF generates specific probe packets containing timestamp information for accurate round-trip time (RTT) calculation. The UPF then sends these probe packets to the target UE via the user plane interface. Upon receiving the probe packets, the target UE immediately generates a response packet. This response packet contains the timestamp information of the original probe packets and the time information of when the UE processed the probe packets. After receiving the response packet from the UE, the UPF calculates the RTT by comparing the sending and receiving timestamps. In this way, the UPF can determine the latency of the relevant path. However, this method also has some drawbacks, including: 1) Generating and transmitting probe packets generates additional network traffic. Although individual probe packets are small, frequent measurements may impact network performance, and this additional traffic may exacerbate network congestion when network load is already high; 2) Probe packets may be subject to network priority processing, causing the measurement results to not accurately reflect the actual latency of ordinary data streams; 3) Instantaneous fluctuations in network conditions may cause the latency of the previous measurement to differ from the actual latency of the next transmission.

[0045] Therefore, the current method of detection by UPF is difficult to obtain relatively accurate network performance indicators, which will affect the core network's selection of air interface links when transmitting data with the UE.

[0046] In summary, how the core network selects a suitable air interface link for data transmission with the UE is a problem that urgently needs to be solved.

[0047] Based on this, embodiments of this disclosure provide a link selection method, in which a core network device sends configuration information to an access network device, enabling the access network device to send access network auxiliary information to the core network device based on the configuration information. Here, the access network auxiliary information includes the access network's measurement of the transmission link, which can be used by the core network device to determine the transmission link and / or transmission standard used when transmitting data with the UE.

[0048] Figure 3 is a system architecture diagram of a communication system according to some embodiments. As shown in Figure 3, the communication system 30 includes an access network device 31, a UE 32, and a core network device 33. Here, the core network device 33 is communicatively connected to the access network device 31, and the access network device 31 and the UE 32 can be communicatively connected.

[0049] In some embodiments, the core network device 33 may be a device or network element with control functions, such as SMF or AMF.

[0050] In some embodiments, the access network device 31 can be a base station, which provides radio access services to multiple UEs 32. In some embodiments, a base station provides one or more service coverage areas (also referred to as cells). UEs 32 entering this area can communicate with the base station via radio signals to receive the radio access services provided by the base station. The service coverage areas of base stations may overlap, and UEs in overlapping areas can receive radio signals from multiple base stations.

[0051] In some embodiments, the base station may be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA), or an evolved Node B (eNB or eNodeB), a base station in a 5G network, or a base station in a future communication system. The base station may include various macro base stations, micro base stations, home base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, wireless fidelity (WIFI) devices, or various network-side devices such as primary cells and secondary cells.

[0052] In some embodiments, UE32 can be a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as on ships); and it can also be deployed in the air (e.g., on airplanes, balloons, and satellites). UE can be a mobile phone, drone, tablet, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. This disclosure does not limit the application scenario. UE may also be referred to as user, access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc., and this disclosure does not limit these terms.

[0053] It should be understood that Figure 3 is an exemplary architecture diagram, and the number of devices included in the communication system shown in Figure 3 is not limited, for example, the number of base stations and the number of UEs are not limited. Furthermore, in addition to the devices shown in Figure 3, the communication system shown in Figure 3 may include other devices, and this is not limited.

[0054] Figure 4 is a flowchart of a link selection method according to some embodiments. In some embodiments, the link selection method provided in this disclosure can be applied to the communication system shown in Figure 1, for example, it can be applied to core network equipment such as AMF, SMF or UPF.

[0055] As shown in Figure 4, the link selection method provided in this disclosure may include the following steps S401 to S402.

[0056] In S401, the core network equipment sends configuration information for access network auxiliary information to the access network equipment.

[0057] Here, the configuration information is used to configure when the access network device sends access network auxiliary information, which may include measurement information, status statistics, etc.

[0058] In some embodiments, the configuration information includes at least one of the following:

[0059] The RAN assistant request information is a request for auxiliary information provided by the RAN to the user plane functions in the core network.

[0060] The reporting frequency or period indicates the frequency or period at which auxiliary information of the access network is reported.

[0061] The report event is used to indicate the triggering conditions for reporting.

[0062] In some embodiments, the reported triggering event includes at least one of the following:

[0063] The result of measurement or resource statistics is greater than the first threshold;

[0064] The result of measurement or resource statistics is less than the second threshold;

[0065] The measurement or resource statistics result has changed more than the third threshold compared to the previous result.

[0066] In some embodiments, taking the result of measurement or resource statistics as an example, if it is greater than a first threshold, the reported trigger event may include at least one of the following:

[0067] 1. The utilization rate of uplink resources is greater than the first threshold;

[0068] 2. Downlink resource utilization exceeds the second threshold;

[0069] 3. The uplink air interface transmission delay is greater than the third threshold;

[0070] 4. The downlink air interface transmission delay is greater than the fourth threshold;

[0071] 5. The packet error rate of uplink air interface transmission is greater than the fifth threshold;

[0072] 6. The packet error rate of downlink air interface transmission is greater than the sixth threshold.

[0073] In other embodiments, taking the result of measurement or resource statistics being less than a second threshold as an example, the reported trigger event may include at least one of the following:

[0074] 7. Uplink resource utilization is below the first threshold;

[0075] 8. Downlink resource utilization is below the second threshold;

[0076] 9. The uplink air interface transmission latency is lower than the third threshold;

[0077] 10. Downlink air interface transmission latency is below the fourth threshold;

[0078] 11. The packet error rate of uplink air interface transmission is lower than the fifth threshold;

[0079] 12. The packet error rate of downlink air interface transmission is lower than the sixth threshold;

[0080] In some other embodiments, for example, if the change in the measurement or resource statistics result compared to the previous result is greater than a third threshold, the reported trigger event may include at least one of the following:

[0081] 13. Compared to the previous result, the change in uplink resource utilization is greater than the first threshold;

[0082] 14. Compared to the previous result, the change in downlink resource utilization is greater than the second threshold;

[0083] 15. Compared to the previous result, the change in uplink air interface transmission delay is greater than the third threshold;

[0084] 16. Compared to the previous result, the change in downlink air interface transmission delay is greater than the fourth threshold;

[0085] 17. Compared to the previous result, the change in the packet error rate of uplink air interface transmission is greater than the fifth threshold;

[0086] 18. Compared to the previous result, the change in the packet error rate of downlink air interface transmission is greater than the sixth threshold.

[0087] It should be noted that the values ​​of the first to sixth thresholds in the different embodiments described above are different and can be determined according to the actual scenario.

[0088] In some embodiments, when the configuration information includes reporting trigger events, the configuration information may also include threshold values ​​related to the aforementioned events.

[0089] In some embodiments, access network assistance information includes at least one of the following:

[0090] Downlink guaranteed bit rate physical resource block usage (DL GBR PRB Usage); used to indicate the usage of downlink physical resource blocks (PRBs) as a percentage of the total number of PRBs.

[0091] Uplink guaranteed bit rate physical resource block usage (UL GBR PRB Usage); used to indicate the percentage of uplink PRB usage through the total number of PRBs.

[0092] Access network downlink packet delay (RAN part of DL packet delay); used to indicate the downlink packet delay between the UE and the RAN node;

[0093] Access network uplink packet delay (RAN part of UL packet delay); used to indicate the uplink packet delay between the UE and the RAN node.

[0094] Here, for DL ​​GBR PRB Usage, it can also be specified as DL GBR PRB Usage, DL Non-GBR PRB Usage, or DL ​​Total PRB PRB Usage respectively.

[0095] Here, for UL GBR PRB Usage, it can also be indicated as UL GBR PRB Usage, UL Non-GBR PRB Usage, or UL Total PRB PRB Usage respectively.

[0096] Here, for the RAN part of DL packet delay, the DL packet delay of data streams with different priorities can also be indicated separately.

[0097] Here, for the RAN part of UL packet delay, the UL packet delay of data streams with different priorities can also be indicated separately.

[0098] In S402, the core network equipment receives access network auxiliary information from the access network equipment.

[0099] Here, access network auxiliary information is used by core network equipment to determine the transmission link and / or transmission standard used when transmitting data with user equipment (UE).

[0100] In some embodiments, the transmission link includes at least one of the following:

[0101] 4G air interface link;

[0102] 5G air interface link;

[0103] 6G air interface link.

[0104] In some embodiments, the transmission standard includes at least one of the following:

[0105] 4G RAT;

[0106] 5G RAT;

[0107] 6G RAT.

[0108] In some embodiments, access network auxiliary information is carried in the GTP-U header.

[0109] In some embodiments, the network side can be configured to perform measurements or resource statistics based on different granularities. Specifically, the configuration information also indicates the granularity of the measurement or resource statistics, which includes at least one of the following:

[0110] residential community;

[0111] Network slicing;

[0112] Packet priority;

[0113] The type of package (e.g., AI training and / or analysis packages, perception measurement packages, etc.);

[0114] Transmission links (when there are multiple transmission links between the base station and the UE);

[0115] Transmission standard (the link between the base station and the UE includes multiple transmission standards, such as 4G RAT, 5G RAT or 6G RAT).

[0116] In some embodiments, where the configuration information indicates that measurements are performed based on different granularities, the access network auxiliary information further includes:

[0117] Cell identifiers (including one or more cell identifiers); indicating which cell measurement or resource statistics reports the access network equipment needs to provide;

[0118] Network slice identifier (including one or more network slice identifiers); indicating which network slice measurement or resource statistics reports the access network device needs to provide;

[0119] Packet priority identifiers (including one or more packet priority identifiers); indicating which priority packets the access network device needs to provide measurement or resource statistics reports for;

[0120] Packet type identifier (including one or more packet type identifiers); indicating which types of packets the access network device needs to provide for measurement or resource statistics reports;

[0121] Transmission link identifiers (including one or more link identifiers); indicating which link measurement or resource statistics reports the access network equipment needs to provide;

[0122] Transmission standard identifier (including one or more standard types); indicating which standard measurement or resource statistics reports the access network equipment needs to provide.

[0123] In some scenarios, access network devices need to decide which transmission tunnel to use to send access network auxiliary information to core network devices. This disclosure provides two methods:

[0124] Method 1:

[0125] In some embodiments, the configuration information further includes: first indication information for the transmission tunnel used to transmit access network auxiliary information.

[0126] In some embodiments, the transport tunnel is associated with a protocol data unit (PDU) session.

[0127] In some embodiments, the first indication information of the transmission tunnel includes at least one of the following:

[0128] Uplink transport layer information; Uplink transport layer information associated with the PDU session of the NG-RAN node and UPF, corresponding to the Internet Protocol (IP) address and the General Packet Radio Service Tunneling Protocol (GTP) endpoint identifier;

[0129] GTP tunnel information; it indicates user plane transmissions between NG-RAN nodes and UPFs.

[0130] It should be noted that if the configuration information includes a list of uplink transport layer information, the base station selects a PDU session from it to transmit access network auxiliary information.

[0131] Additionally, if there is no data to be transmitted between the UE and the core network, the base station can send an empty data packet with access network auxiliary information in the empty data packet header.

[0132] Method 2:

[0133] In related technologies, the information transmitted between the base station and user plane network elements is all related to the UE. Therefore, all transmitted information is carried through PDU sessions associated with the UE. This approach allows for the transmission of different measurement information based on different UE sessions. However, some air interface measurement information (such as load) is the same for all UEs. If it is still transmitted through PDU sessions associated with the UE, the base station needs to choose which UE-associated PDU session to use for transmission. Since this measurement information reflects the overall system situation rather than the situation of individual UEs, this choice lacks rationality. Furthermore, if there is no data to be sent between the UE and the core network for a period of time, the base station can only send an empty data packet with measurement information in the empty packet header, resulting in low communication efficiency. Therefore, in this embodiment, a dedicated communication channel is proposed between the base station and user plane network elements in the core network. This channel is independent of specific PDU sessions and UEs, as described below:

[0134] In some embodiments, prior to S401, the link selection method provided in this disclosure further includes S400.

[0135] In S400, a second indication message for the transmission tunnel is sent.

[0136] The transmission tunnel here is used to transmit configuration information and / or access network auxiliary information.

[0137] The second instruction information includes at least one of the following:

[0138] Request information to establish a transmission tunnel;

[0139] Update the request information for the transmission tunnel;

[0140] Identification of access network equipment;

[0141] Identification of core network equipment;

[0142] The identifier of the established transmission tunnel (multiple transmission tunnels exist);

[0143] The updated identifier of the transmission tunnel (multiple transmission tunnels exist);

[0144] A tunnel type identifier; used to identify the type of information transmitted in the tunnel, including, in some embodiments, the type of auxiliary information transmitted.

[0145] In some embodiments, the transport tunnel is independent of a specific PDU session.

[0146] In other words, before requesting access network auxiliary information, the core network device can send a second indication message to the access network device to establish a transmission tunnel with the access network device. In some embodiments, the core network device can send configuration information to the access network device through this transmission tunnel, and correspondingly, the access network device sends access network auxiliary information to the access network device through the transmission tunnel based on the configuration information.

[0147] In some embodiments, access network auxiliary information is carried in the GTP-U header.

[0148] In some embodiments, after determining the transmission link / transmission standard based on access network auxiliary information, the core network device may inform the access network device. That is, the link selection method provided in this disclosure embodiment further includes S403.

[0149] In S403, the core network device sends link information to the access network device; the link information indicates the transmission path used by the core network device when transmitting data with the UE; or,

[0150] The core network equipment sends transmission standard information to the access network equipment; the transmission standard information is used to indicate the transmission standard used by the core network equipment when transmitting data with the UE; or,

[0151] The core network equipment sends cell information to the access network equipment; the cell information is used to indicate the radio cell through which the core network equipment transmits data with the UE.

[0152] Here, the transmission path includes the transmission link between the UE and the access network equipment and / or the transmission link between the access network equipment and the core network equipment.

[0153] In some embodiments, if a UE connects to the core network through multiple access network devices, the core network device can dynamically select which access network device to use for communication with the UE based on access network auxiliary information. If a new access network device is used, the original access network device needs to be instructed to stop transmission. In some embodiments, even if the UE only communicates with the same access network device, there may still be multiple links, for example, accessing the same access network device through different cells, different frequency bands, or different links associated with different DUs or RUs. If the transmission link is changed, for uplink transmission, the access network device also needs to instruct the UE to stop continuing transmission on the current uplink.

[0154] That is, the link selection method provided in this embodiment of the disclosure also includes S404.

[0155] In S404, a link stop transmission indication message is sent to the access network equipment; the link stop transmission indication message is used to indicate that data transmission using the transmission path associated with the link should be stopped; or,

[0156] Send a standard stop transmission indication message to the access network equipment; the standard stop transmission is used to indicate that the data transmission using the standard should be stopped.

[0157] In some embodiments, the data transmission herein includes:

[0158] The transmission of data streams associated with the indicated Quality of Service (QoS) stream identifier; or,

[0159] The transmission of data streams associated with the indicated packet priority; or,

[0160] The transmission of data streams associated with the indicated packet type.

[0161] It should be noted that UE data transmission includes various types of data transmission, each corresponding to different services, priorities, and QoS flows. Because different data have different requirements for network QoS guarantees, the link selection and handover mentioned above are based on different data type indicators. For example, for the same UE, some of its data can be sent via link 1 through base station 1, while other data can be sent via link 2 through base station 2.

[0162] Figure 5 is a flowchart of another link selection method according to some embodiments. In some embodiments, the link selection method provided by this disclosure can be applied to the communication system shown in Figure 1, for example, it can be applied to access network equipment, such as a base station.

[0163] As shown in Figure 5, the link selection method provided in this embodiment may include the following steps S501 to S502.

[0164] In S501, the access network device receives configuration information from the access network auxiliary information of the core network device.

[0165] In S502, access network devices send access network auxiliary information to core network devices based on configuration information.

[0166] Here, access network auxiliary information is used to enable core network equipment to determine the transmission link and / or transmission standard used when transmitting data with the UE.

[0167] In some embodiments, the configuration information includes at least one of the following:

[0168] Request information for access network auxiliary information;

[0169] Reporting frequency or period;

[0170] Report the triggered event.

[0171] In other words, when the configuration information includes request information, the access network device sends access network auxiliary information to the core network device after receiving the configuration information. When the configuration information includes reporting frequency or period, or reporting trigger event, the access network device proactively sends access network auxiliary information to the core network device if the conditions are met by detecting the reporting frequency or period, or reporting trigger event.

[0172] In some embodiments, the reported triggering event includes at least one of the following:

[0173] The result of measurement or resource statistics is greater than the first threshold;

[0174] The result of measurement or resource statistics is less than the second threshold;

[0175] The measurement or resource statistics result has changed more than the third threshold compared to the previous result.

[0176] In some embodiments, the configuration information is also used to indicate:

[0177] The granularity for measurement or resource statistics includes at least one of the following:

[0178] residential community;

[0179] Network slicing;

[0180] Packet priority;

[0181] Package type;

[0182] Transmission link;

[0183] Transmission standard.

[0184] In some embodiments, the access network auxiliary information further includes:

[0185] Community signage;

[0186] Network slice identifier;

[0187] Packet priority identifier;

[0188] Package type identifier;

[0189] Transmission link identifier;

[0190] Transmission standard identifier;

[0191] Wireless resource utilization;

[0192] Packet transmission delay between the UE and the access network equipment.

[0193] In some embodiments, when the core network device requests measurement or resource statistics at a granular level, the access network may send feedback information to the core network device.

[0194] In some embodiments, the feedback information includes supported measurement or resource statistics granularity.

[0195] In some embodiments, when the access network device supports multiple different standards for measurement or resource statistics, it can send the supported standard types, including 4G RAT, 5G RAT, 6G RAT, etc.

[0196] When an access network device supports measurement or resource statistics for multiple links, it can send the identifiers of the supported links.

[0197] Similarly, access network devices can also send identifiers of cells that support measurement, packet priority identifiers that support measurement, and packet type identifiers that support measurement.

[0198] In some embodiments, the configuration information further includes: first indication information for the transmission tunnel used to transmit access network auxiliary information.

[0199] In some embodiments, the transport tunnel is associated with a protocol data unit (PDU) session.

[0200] In some embodiments, the first indication information of the transmission tunnel includes at least one of the following:

[0201] Uplink transport layer information;

[0202] GTP tunnel information;

[0203] In some embodiments, the method further includes S500 before S501 described above.

[0204] In S500, the second indication information of the transmission tunnel is received.

[0205] Here, the transport tunnel is used to transmit configuration information and / or access network auxiliary information.

[0206] The second instruction information includes at least one of the following:

[0207] Request information to establish a transmission tunnel;

[0208] Update the request information for the transmission tunnel;

[0209] Identification of access network equipment;

[0210] Identification of core network equipment;

[0211] The identifier of the established transmission tunnel;

[0212] Updated identifier for the transmission tunnel;

[0213] Identifier of the transmission tunnel type.

[0214] In some embodiments, the transport tunnel is independent of a specific PDU session.

[0215] In some embodiments, the link selection method provided in this disclosure further includes S503.

[0216] In S503, the access network device receives link information from the core network device; the link information is used to indicate the transmission path used by the core network device when transmitting data with the UE; or,

[0217] The access network device receives transmission standard information from the core network device; the transmission standard information is used to indicate the transmission standard used by the core network device when transmitting data with the UE; or,

[0218] The access network device receives cell information from the core network device; the cell information is used to indicate the radio cell through which the core network device and the UE transmit data.

[0219] Here, the transmission path includes the transmission link between the UE and the access network equipment and / or the transmission link between the access network equipment and the core network equipment.

[0220] In some embodiments, the link selection method provided in this disclosure further includes S504.

[0221] In S504, the access network device receives a link stop transmission indication from the core network device; the link stop transmission indication is used to stop using the transmission path associated with the link for data transmission; or,

[0222] The access network device receives a standard stop transmission indication information from the core network device; the standard stop transmission is used to instruct the core network device and the UE to stop using the standard for data transmission.

[0223] In some embodiments, the data transmission herein includes:

[0224] The transmission of data streams associated with the indicated QoS flow identifier; or,

[0225] The transmission of data streams associated with the indicated packet priority; or,

[0226] The transmission of data streams associated with the indicated packet type.

[0227] In some embodiments, the link selection method provided in this disclosure further includes S505.

[0228] In S505, after receiving a link stop transmission indication message from the core network equipment, a link stop transmission indication message is sent to the UE; or,

[0229] After receiving the standard stop transmission indication information from the core network equipment, the standard stop transmission indication information is sent to the UE.

[0230] It should be noted that the relevant descriptions of configuration information and access network auxiliary information on the access network side can be found in the relevant descriptions on the core network side, and will not be repeated here.

[0231] Figure 6 is a flowchart of another link selection method according to some embodiments. In some embodiments, the link selection method provided in this disclosure can be applied to the communication system shown in Figure 1, and can be applied to the UE.

[0232] As shown in Figure 6, the link selection method provided in this disclosure may include the following steps S601.

[0233] In S601, after receiving a link stop transmission indication message from a core network device or access network device, data transmission using the link is stopped; or,

[0234] Upon receiving a standard-stop transmission indication message from the core network equipment or access network equipment, the system stops using the standard for data transmission.

[0235] Here, data transmission includes:

[0236] The transmission of data streams associated with the indicated Quality of Service (QoS) flow identifier; or,

[0237] The transmission of data streams associated with the indicated packet priority; or,

[0238] The transmission of data streams associated with the indicated packet type.

[0239] The link selection method provided in this disclosure embodiment will be briefly described below in conjunction with the process.

[0240] Example 1

[0241] 1. The core network equipment sends configuration information to the access network equipment. The configuration information includes the reporting frequency or period, or the reporting trigger event.

[0242] 2. Access network equipment obtains access network auxiliary information through measurement or resource statistics. When the reporting frequency or period is met, or when a reporting trigger event is triggered, it determines the associated PDU session and actively sends the access network auxiliary information to the core network equipment through the transmission tunnel associated with the PDU session.

[0243] 3. The core network equipment determines the transmission link or transmission standard for communication with the UE based on the access network auxiliary information.

[0244] Example 2

[0245] 1. The core network equipment sends a second indication message for the transmission tunnel to establish a dedicated transmission tunnel that is independent of the PDU session.

[0246] 2. Core network equipment sends configuration information to access network equipment through a dedicated transmission tunnel. The configuration information includes the reporting frequency or period, or the reporting trigger event.

[0247] 3. Access network equipment obtains access network auxiliary information through measurement or resource statistics. When the reporting frequency or period is met, or when a reporting trigger event is triggered, the access network auxiliary information is actively sent to the core network equipment through a dedicated transmission tunnel.

[0248] 4. The core network equipment determines the transmission link or transmission standard for communication with the UE based on the access network auxiliary information.

[0249] Example 3

[0250] 1. The core network equipment sends configuration information to the access network equipment. The configuration information includes requests for access network auxiliary information.

[0251] In some embodiments, the request information includes a measurement granularity indication indicating the request.

[0252] 2. If the access network device can support providing auxiliary information to the user plane network element, then the feedback information sent is sent to the core network element with control function.

[0253] In some embodiments, the supported measurement statistical granularity is indicated in the feedback information.

[0254] When the access network device supports multiple different standards for measurement and statistics, it can send the supported standard types, including 4G RAT, 5G RAT, 6G RAT, etc.

[0255] When an access network device supports measurement or resource statistics for multiple links, it can send the identifiers of the supported links.

[0256] Similarly, it can also send identifiers of cells that support measurement, packet priority identifiers that support measurement, packet type identifiers that support measurement, etc.

[0257] 3. The access network equipment obtains access network auxiliary information by performing measurements or resource statistics. Upon receiving a request from the core network equipment, it determines the associated PDU session and sends the access network auxiliary information to the core network equipment through the transmission tunnel associated with the PDU session.

[0258] 4. The core network equipment determines the transmission link or transmission standard for communication with the UE based on the access network auxiliary information.

[0259] Example 4

[0260] 1. The core network equipment sends a second indication message for the transmission tunnel to establish a dedicated transmission tunnel that is independent of the PDU session.

[0261] 2. Core network equipment sends configuration information to access network equipment through a dedicated transmission tunnel. The configuration information includes requests for access network auxiliary information.

[0262] 3. Access network equipment obtains access network auxiliary information through measurement or resource statistics. Upon receiving a request from core network equipment, it sends the access network auxiliary information to the core network equipment through a dedicated transmission tunnel.

[0263] 4. The core network equipment determines the transmission link or transmission standard for communication with the UE based on the access network auxiliary information.

[0264] This disclosure provides a link selection method in which a core network device sends configuration information to an access network device, enabling the access network device to send access network auxiliary information to the core network device based on the configuration information. Here, the access network auxiliary information includes the access network's measurements of the transmission link, which can be used by the core network device to determine the transmission link and / or transmission standard to be used when transmitting data with the UE.

[0265] In addition, this embodiment configures the timing of access network devices reporting access network auxiliary information by configuring the information, so that access network devices can actively report access network auxiliary information when the network environment changes, ensuring that the core network can understand the latest network situation in a timely manner so as to make reasonable resource scheduling.

[0266] It is understood that, in order to achieve the above-mentioned functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the algorithmic steps of the examples described in conjunction with the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0267] This disclosure embodiment can divide the communication device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0268] Figure 7 is a block diagram of a communication device according to some embodiments, which can perform the link selection method provided in the above-described method embodiments. As shown in Figure 7, the communication device includes a transmitting module 701 and a receiving module 702.

[0269] The sending module 701 is used to send configuration information of access network auxiliary information to the access network device;

[0270] The receiving module 702 is used to receive access network auxiliary information from the access network device; the access network auxiliary information is used by the core network device to determine the transmission link and / or transmission standard used when transmitting data with the user equipment (UE).

[0271] In some embodiments, the configuration information includes at least one of the following: request information for access network auxiliary information; reporting frequency or period; reporting trigger event.

[0272] In some embodiments, the reporting trigger event includes at least one of the following: the result of measurement or resource statistics is greater than a first threshold; the result of measurement or resource statistics is less than a second threshold; the change in the result of measurement or resource statistics compared to the previous result is greater than a third threshold.

[0273] In some embodiments, the configuration information is also used to indicate: the granularity of the measurement or resource statistics, the granularity including at least one of the following: cell; network slice; packet priority; packet type; transmission link; transmission standard.

[0274] In some embodiments, the access network auxiliary information further includes: cell identifier; network slice identifier; packet priority identifier; packet type identifier; transmission link identifier; transmission standard identifier; radio resource utilization rate; and packet transmission delay between the UE and the access network device.

[0275] In some embodiments, the configuration information further includes: first indication information for a transmission tunnel used to transmit the access network auxiliary information.

[0276] In some embodiments, the transport tunnel is associated with a Protocol Data Unit (PDU) session.

[0277] In some embodiments, the first indication information of the transmission tunnel includes at least one of the following:

[0278] User plane transport layer information associated with the PDU session;

[0279] General Packet Radio Service Tunneling Protocol (GTP) tunnel information.

[0280] In some embodiments, access network auxiliary information is carried in the GTP-U header.

[0281] In some embodiments, the transmission link includes at least one of the following: a 4G air interface link; a 5G air interface link; or a 6G air interface link.

[0282] In some embodiments, the transmission standard includes at least one of the following: 4G RAT; 5G RAT; 6G RAT.

[0283] In some embodiments, the sending module 701 is further configured to send link information to the access network device; the link information is used to indicate the transmission path used by the core network device and the UE when transmitting data; or,

[0284] Send transmission standard information to the access network equipment; the transmission standard information is used to indicate the transmission standard used by the core network equipment when transmitting data with the UE; or,

[0285] Send cell information to the access network equipment; the cell information is used to indicate the radio cell through which the core network equipment transmits data with the UE;

[0286] Here, the transmission path includes the transmission link between the UE and the access network equipment and / or the transmission link between the access network equipment and the core network equipment.

[0287] In some embodiments, the sending module 701 is further configured to send link stop transmission indication information to the access network device; the link stop transmission is used to indicate the cessation of data transmission using the transmission path associated with the link; or,

[0288] Send a standard stop transmission indication message to the access network equipment; the standard stop transmission is used to indicate that the standard should be stopped for data transmission.

[0289] In some embodiments, data transmission includes:

[0290] The transmission of data streams associated with the indicated Quality of Service (QoS) flow identifier; or,

[0291] The transmission of data streams associated with the indicated packet priority; or,

[0292] The transmission of data streams associated with the indicated packet type.

[0293] Figure 8 is a block diagram of a communication device according to some embodiments, which can perform the link selection method provided in the above-described method embodiments. As shown in Figure 8, the communication device includes a receiving module 801 and a transmitting module 802.

[0294] The receiving module 801 is used to receive configuration information from the access network auxiliary information of the core network equipment;

[0295] The sending module 802 is used to send access network auxiliary information to the core network equipment based on configuration information; the access network auxiliary information is used to enable the core network equipment to determine the transmission link and / or transmission standard used when transmitting data with the UE.

[0296] In some embodiments, the configuration information includes at least one of the following: request information for access network auxiliary information; reporting frequency or period; reporting trigger event.

[0297] In some embodiments, the reporting trigger event includes at least one of the following: the result of measurement or resource statistics is greater than a first threshold; the result of measurement or resource statistics is less than a second threshold; the change in the result of measurement or resource statistics compared to the previous result is greater than a third threshold.

[0298] In some embodiments, the configuration information is also used to indicate: the granularity of the measurement or resource statistics, the granularity including at least one of the following: cell; network slice; packet priority; packet type; transmission link; transmission standard.

[0299] In some embodiments, the access network auxiliary information further includes: cell identifier; network slice identifier; packet priority identifier; packet type identifier; transmission link identifier; transmission standard identifier; radio resource utilization rate; and packet transmission delay between the UE and the access network device.

[0300] In some embodiments, the configuration information further includes: first indication information for the transmission tunnel used to transmit access network auxiliary information.

[0301] In some embodiments, the transport tunnel is associated with a Protocol Data Unit (PDU) session.

[0302] In some embodiments, the first indication information of the transmission tunnel includes at least one of the following:

[0303] User plane transport layer information associated with the PDU session;

[0304] General Packet Radio Service Tunneling Protocol (GTP) tunnel information.

[0305] In some embodiments, the receiving module 801 is further configured to receive second indication information of the transmission tunnel, the second indication information including at least one of the following:

[0306] Request information to establish a transmission tunnel;

[0307] Update the request information for the transmission tunnel;

[0308] Identification of access network equipment;

[0309] Identification of core network equipment;

[0310] The identifier of the established transmission tunnel;

[0311] Updated identifier for the transmission tunnel;

[0312] Identifier of transmission tunnel type;

[0313] Here, the transport tunnel is used to transmit configuration information and / or access network auxiliary information.

[0314] In some embodiments, the transport tunnel is independent of a specific PDU session.

[0315] In some embodiments, the receiving module 801 is further configured to receive link information from the core network device; the link information is used to indicate the transmission path used by the core network device and the UE when transmitting data; or,

[0316] Receive transmission standard information from the core network equipment; the transmission standard information is used to indicate the transmission standard used by the core network equipment when transmitting data with the UE; or,

[0317] Receive cell information from the core network equipment; the cell information is used to indicate the radio cell through which the core network equipment transmits data with the UE;

[0318] Here, the transmission path includes the transmission link between the UE and the access network equipment and / or the transmission link between the access network equipment and the core network equipment.

[0319] In some embodiments, the receiving module 801 is further configured to receive link stop transmission indication information from the core network device; the link stop transmission is used to indicate the cessation of data transmission using the transmission path associated with the link; or,

[0320] Receive a standard stop transmission indication message from the core network equipment; the standard stop transmission is used to indicate that the standard should be stopped for data transmission.

[0321] In some embodiments, data transmission includes:

[0322] The transmission of data streams associated with the indicated Quality of Service (QoS) flow identifier; or,

[0323] The transmission of data streams associated with the indicated packet priority; or,

[0324] The transmission of data streams associated with the indicated packet type.

[0325] In some embodiments, the receiving module 801 is further configured to send link stop transmission indication information to the UE after receiving link stop transmission indication information from the core network device; or,

[0326] After receiving the standard stop transmission indication information from the core network equipment, the standard stop transmission indication information is sent to the UE.

[0327] In some embodiments, access network auxiliary information is carried in the GTP-U header.

[0328] In some embodiments, the transmission link includes at least one of the following: a 4G air interface link; a 5G air interface link; or a 6G air interface link.

[0329] In some embodiments, the transmission standard includes at least one of the following: 4G RAT; 5G RAT; 6G RAT.

[0330] Figure 9 is a block diagram of a communication device according to some embodiments, which can perform the link selection method provided in the above-described method embodiments. As shown in Figure 9, the communication device includes a receiving module 901.

[0331] The receiving module 901 is configured to, upon receiving a link stop transmission indication information from a core network device or an access network device, stop using the link for data transmission; or,

[0332] After receiving a standard stop transmission indication message from the core network equipment or access network equipment, stop using the standard for data transmission;

[0333] Here, data transmission includes:

[0334] The transmission of data streams associated with the indicated Quality of Service (QoS) flow identifier; or,

[0335] The transmission of data streams associated with the indicated packet priority; or,

[0336] The transmission of data streams associated with the indicated packet type.

[0337] In the case of implementing the functions of the integrated modules described above in hardware, this disclosure provides another possible structure for the communication device involved in the above embodiments. As shown in FIG10, the communication device 1000 includes: a processor 1002 and a bus 1004. In some embodiments, the communication device may further include a memory 1001; in some embodiments, the communication device may further include a communication interface 1003.

[0338] Processor 1002 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 1002 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 1002 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a digital signal processor (DSP), and a microprocessor, etc.

[0339] Communication interface 1003 is used to connect with other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0340] The memory 1001 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0341] In one implementation, the memory 1001 may exist independently of the processor 1002. The memory 1001 can be connected to the processor 1002 via a bus 1004 and is used to store instructions or program code. When the processor 1002 calls and executes the instructions or program code stored in the memory 1001, it can implement the method provided in the embodiments of this disclosure.

[0342] In another implementation, the memory 1001 can also be integrated with the processor 1002.

[0343] Bus 1004 can be an extended industry standard architecture (EISA) bus, etc. Bus 1004 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 10, but this does not mean that there is only one bus or one type of bus.

[0344] In some embodiments, the memory 1001 stores executable instructions that, when executed by the processor 1002, cause the communication device to perform the method described in any of the embodiments described above.

[0345] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0346] In some embodiments, the computer-readable storage media described above may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0347] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0348] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A link selection method, wherein, Applied to core network equipment, the method includes: Configuration information for sending access network auxiliary information to access network devices; The core network device receives access network auxiliary information from the access network equipment; the access network auxiliary information is used by the core network equipment to determine the transmission link and / or transmission standard used when transmitting data with the user equipment (UE).

2. The method according to claim 1, wherein, The configuration information includes at least one of the following: Request information for access network auxiliary information; Reporting frequency or period; Report the triggered event.

3. The method according to claim 2, wherein, The reporting trigger event includes at least one of the following: The result of measurement or resource statistics is greater than the first threshold; The result of measurement or resource statistics is less than the second threshold; The measurement or resource statistics result has changed more than the third threshold compared to the previous result.

4. The method according to claim 2, wherein, The configuration information is also used to indicate: The granularity for performing measurement or resource statistics includes at least one of the following: residential community; Network slicing; Packet priority; Package type; Transmission link; Transmission standard.

5. The method according to claim 4, wherein, The access network auxiliary information also includes: Community signage; Network slice identifier; Packet priority identifier; Package type identifier; Transmission link identifier; Transmission standard identifier; Wireless resource utilization; Packet transmission delay between the UE and the access network equipment.

6. The method according to claim 2, wherein, The configuration information also includes: First indication information for the transmission tunnel used to transmit the access network auxiliary information.

7. The method according to claim 6, wherein, The transmission tunnel is associated with a Protocol Data Unit (PDU) session.

8. The method according to claim 7, wherein, The first indication information of the transmission tunnel includes at least one of the following: User plane transport layer information associated with the PDU session; General Packet Radio Service Tunneling Protocol (GTP) tunnel information.

9. The method according to claim 1, wherein, Before sending the configuration information for auxiliary information to the access network device, the method further includes: Send a second indication message for the transmission tunnel, the second indication message including at least one of the following: Request information for establishing the transmission tunnel; Update the request information for the transmission tunnel; The identifier of the access network device; The identifier of the core network equipment; The identifier of the established transmission tunnel; The updated identifier of the transmission tunnel; The identifier of the transmission tunnel type; The transmission tunnel is used to transmit the configuration information and / or the access network auxiliary information.

10. The method according to claim 9, wherein, The transmission tunnel is independent of any specific PDU session.

11. The method according to claim 1, wherein, The access network auxiliary information is carried in the GTP-U header.

12. The method according to claim 1, wherein, The transmission link includes at least one of the following: 4G air interface link; 5G air interface link; 6G air interface link.

13. The method according to claim 1, wherein, The transmission standard includes at least one of the following: 4G wireless access technology RAT; 5G RAT; 6G RAT.

14. The method according to claim 1, further comprising: The link information is sent to the access network device; the link information is used to indicate the transmission path used by the core network device when transmitting data with the UE. or, Send transmission standard information to the access network device; the transmission standard information is used to indicate the transmission standard used by the core network device when transmitting data with the UE; or, The access network device sends cell information; the cell information is used to indicate the radio cell through which the core network device transmits data with the UE; The transmission path includes the transmission link between the UE and the access network device and / or the transmission link between the access network device and the core network device.

15. The method of claim 14, further comprising: Send link stop transmission indication information to the access network device; The link stop transmission is used to indicate a halt to data transmission using the transmission path associated with the link; or, Send a standard stop transmission indication message to the access network device; the standard stop transmission is used to indicate that the standard should be stopped for data transmission.

16. The method according to claim 14 or 15, wherein, The data transmission includes: The transmission of data streams associated with the indicated Quality of Service (QoS) flow identifier; or, The transmission of data streams associated with the indicated packet priority; or, The transmission of data streams associated with the indicated packet type.

17. The method according to claim 1, further comprising: The system communicates with the UE based on the transmission link and / or transmission standard.

18. A link selection method, wherein, Applied to access network equipment, the method includes: Receive configuration information from access network auxiliary information from core network equipment; Based on the configuration information, access network auxiliary information is sent to the core network equipment; the access network auxiliary information is used to enable the core network equipment to determine the transmission link and / or transmission standard used when transmitting data with the UE.

19. The method according to claim 18, wherein, The configuration information includes at least one of the following: Request information for access network auxiliary information; Reporting frequency or period; Report the triggered event.

20. The method according to claim 19, wherein, The reporting trigger event includes at least one of the following: The result of measurement or resource statistics is greater than the first threshold; The result of measurement or resource statistics is less than the second threshold; The measurement or resource statistics result has changed more than the third threshold compared to the previous result.

21. The method according to claim 19, wherein, The configuration information is also used to indicate: The granularity for performing measurement or resource statistics includes at least one of the following: residential community; Network slicing; Packet priority; Package type; Transmission link; Transmission standard.

22. The method according to claim 21, wherein, The access network auxiliary information also includes: Community signage; Network slice identifier; Packet priority identifier; Package type identifier; Transmission link identifier; Transmission standard identifier; Wireless resource utilization; Packet transmission delay between the UE and the access network equipment.

23. The method according to claim 22, wherein, The configuration information also includes: First indication information for the transmission tunnel used to transmit the access network auxiliary information.

24. The method according to claim 23, wherein, The transmission tunnel is associated with the PDU session.

25. The method according to claim 24, wherein, The indication information of the transmission tunnel includes at least one of the following: User plane transport layer information associated with the PDU session; GTP tunnel information.

26. The method according to claim 18, wherein, Before receiving configuration information from access network auxiliary information from the core network equipment, the method further includes: Receive second indication information of the transmission tunnel, the second indication information including at least one of the following: Request information for establishing the transmission tunnel; Update the request information for the transmission tunnel; The identifier of the access network device; The identifier of the core network equipment; The identifier of the established transmission tunnel; The updated identifier of the transmission tunnel; The identifier of the transmission tunnel type; The transmission tunnel is used to transmit the configuration information and / or the access network auxiliary information.

27. The method according to claim 26, wherein, The transmission tunnel is independent of any specific PDU session.

28. The method of claim 18, further comprising: Receive link information from the core network device; the link information is used to indicate the transmission path used by the core network device when transmitting data with the UE; or, Receive transmission standard information from core network equipment; The transmission standard information is used to indicate the transmission standard used when the core network device transmits data with the UE; or, Receive cell information from core network equipment; the cell information is used to indicate the radio cell through which the core network equipment transmits data with the UE; The transmission path includes the transmission link between the UE and the access network device and / or the transmission link between the access network device and the core network device.

29. The method of claim 28, further comprising: Receive link stop transmission indication information from core network equipment; The link stop transmission is used to indicate the cessation of data transmission using the transmission path associated with the link; or, Receive a standard stop transmission indication message from the core network equipment; the standard stop transmission is used to indicate that the standard should be stopped for data transmission.

30. The method according to claim 28 or 29, wherein, The data transmission includes: The transmission of data streams associated with the indicated Quality of Service (QoS) flow identifier; or, The transmission of data streams associated with the indicated packet priority; or, The transmission of data streams associated with the indicated packet type.

31. The method of claim 29, further comprising: After receiving the link stop transmission indication information from the core network equipment, the link stop transmission indication information is sent to the UE; or, After receiving the standard stop transmission indication information from the core network equipment, the standard stop transmission indication information is sent to the UE.

32. A link selection method applied to a UE, the method comprising: After receiving a link stop transmission indication message from a core network device or access network device, stop using the link for data transmission; or, Upon receiving a standard stop transmission indication message from a core network device or access network device, the system stops using the specified standard for data transmission. The data transmission includes: The transmission of data streams associated with the indicated Quality of Service (QoS) flow identifier; or, The transmission of data streams associated with the indicated packet priority; or, The transmission of data streams associated with the indicated packet type.

33. A communication device, comprising: A processor and a memory for storing processor-executable instructions; The processor is configured to execute the instructions, causing the communication device to perform the link selection method according to any one of claims 1-17, 18-31, or 32.

34. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed on the communication device, cause the communication device to perform the link selection method according to any one of claims 1-17, 18-31, or 32.

35. A computer program product, wherein, The computer program product includes computer instructions that, when executed on a computer, cause the computer to perform the link selection method according to any one of claims 1-17, 18-31, or 32.

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