CN116963171A - Mobile communication system, information interaction method, network element and deterministic network system - Google Patents
Mobile communication system, information interaction method, network element and deterministic network system Download PDFInfo
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- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
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- H—ELECTRICITY
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- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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Abstract
The present disclosure provides a mobile communication system, an information interaction method, a network element and a deterministic network, and relates to the technical field of communication, where the mobile communication system includes a core network and an access network, and the core network includes: a first network element configured to obtain information required by a deterministic network DetNet controller for determining a forwarding policy of the mobile communication system and to send the information to the DetNet controller, wherein the information comprises at least one of first information about the core network and second information about the access network.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a mobile communications system, an information interaction method, a network element, and a deterministic network system.
Background
In recent years, with the rapid development of technologies such as the internet of things, various services with high delay sensitivity are rapidly increasing. When these services with high delay sensitivity are executed, for example, when a service such as telerobotic surgery, unmanned operation, virtual Reality (VR) game or the like is executed, it is necessary to control the end-to-end delay within 10 milliseconds and to control the delay jitter to the microsecond level.
In order for a mobile communication system to better meet the demands of these services with high latency sensitivity, it is desirable that the mobile communication system be able to act as a DetNet node in a deterministic network (Deterministic Networking, detNet) for deterministic forwarding of flows.
Disclosure of Invention
The inventor notes that the DetNet node needs to forward the traffic according to a forwarding policy determined by the DetNet controller according to information related to the DetNet node, so as to implement deterministic forwarding of the traffic.
However, in the related art, the DetNet controller cannot learn information related to the mobile communication system, so that the DetNet controller cannot determine a forwarding policy of the mobile communication system, and the mobile communication system cannot perform deterministic forwarding on traffic as a DetNet node.
In order to solve the above-described problems, the embodiments of the present disclosure propose the following solutions.
According to an aspect of the embodiments of the present disclosure, there is provided a mobile communication system including a core network and an access network, the core network including: a first network element configured to obtain information required by a deterministic network DetNet controller for determining a forwarding policy of the mobile communication system and to send the information to the DetNet controller, wherein the information comprises at least one of first information about the core network and second information about the access network.
In some embodiments, the first information includes at least one of first capability information of a user plane function, UPF, network element in the core network, first resource usage information, and node information of a DetNet node adjacent to the mobile communication system.
In some embodiments, the node information includes at least one of an identification of the DetNet node, and a time delay between the UPF network element and the DetNet node.
In some embodiments, the node information includes an identification of the DetNet node; the UPF network element is configured to broadcast a routing message over an N6 interface; and receiving a response message sent by the DetNet node in response to the routing message, wherein the response message carries the identification of the DetNet node.
In some embodiments, the node information includes the time delay; the UPF network element is configured to perform quality of service QoS monitoring on the N6 interface to obtain the time delay.
In some embodiments, the second information includes at least one of second capability information and second resource usage information of the access network.
In some embodiments, the core network further comprises: a second network element configured to obtain a first parameter of a DetNet flow in a forwarding policy determined by the DetNet controller according to the information; converting the first parameter into a second parameter of the QoS flow, and sending the second parameter to the first network element, wherein the first parameter comprises a demand attribute of the DetNet flow, and a QoS configuration file in the second parameter comprises the demand attribute; and the UPF network element is configured to acquire the second parameter from the first network element and forward the DetNet flow according to the requirement attribute in the second parameter.
In some embodiments, the access network is configured to obtain the second parameter from the first network element and forward the DetNet flow according to the demand attribute in the second parameter.
In some embodiments, the demand attribute includes at least one of a first demand attribute and a second demand attribute; wherein the first demand attribute comprises at least one of a maximum delay variation range, a maximum continuous packet loss tolerance, and a maximum out-of-order tolerance, and the second demand attribute comprises at least one of a minimum bandwidth, a maximum delay, and a maximum packet loss rate.
In some embodiments, the first network element is configured to receive a subscription message from the DetNet controller; acquiring first information in case the subscription message includes first indication information about the core network; and acquiring second information in the case that the subscription message comprises second indication information about the access network.
In some embodiments, the first indication information includes at least one of a first frequency and a first trigger condition; the first network element is configured to periodically acquire the first information at the first frequency; and/or acquiring the first information when the first trigger condition is met.
In some embodiments, the second indication information includes at least one of a second frequency and a second trigger condition; the first network element is configured to periodically acquire the second information at the second frequency; and/or acquiring the first information when the second trigger condition is met.
In some embodiments, the core network further comprises a network opening function, NEF, network element; wherein the first network element is configured to communicate with the DetNet controller via the NEF network element.
In some embodiments, the first network element is a session management function, SMF, network element; wherein the first network element is configured to obtain the first information from a UPF network element in the core network and to obtain the second information from the access network via an access and mobility management function AMF network element in the core network.
According to another aspect of the embodiments of the present disclosure, there is provided an information interaction method, including: a first network element in a core network of a mobile communication system acquires information needed by a deterministic network DetNet controller for determining a forwarding policy of the mobile communication system, wherein the information comprises at least one of first information about the core network and second information about an access network; the first network element sends the information to the DetNet controller.
In some embodiments, the first information includes at least one of first capability information of a UPF network element in the core network, first resource usage information, and node information of a DetNet node adjacent to the mobile communication system.
In some embodiments, the node information includes at least one of an identification of the DetNet node, and a time delay between the UPF network element and the DetNet node.
In some embodiments, the identification of the DetNet node is carried in a response message received by the UPF network element, the response message being sent by the DetNet node in response to a routing message broadcast by the UPF network element over an N6 interface.
In some embodiments, the delay is obtained by QoS monitoring of the N6 interface by the UPF network element.
In some embodiments, the second information includes at least one of second capability information and second resource usage information of the access network.
In some embodiments, the method further comprises: a second network element in the core network acquires a first parameter of a DetNet flow in a forwarding strategy determined by the DetNet controller according to the information, wherein the first parameter comprises a demand attribute of the DetNet flow; the second network element converts the first parameter into a second parameter of the QoS flow, and a QoS configuration file in the second parameter comprises the requirement attribute; the second network element sends the second parameter to the first network element; and the UPF network element in the core network acquires the second parameter from the first network element, and forwards the DetNet flow according to the requirement attribute in the second parameter.
In some embodiments, the method further comprises: the first network element sends the second parameter to the access network; and the access network forwards the DetNet flow according to the requirement attribute in the second parameter.
In some embodiments, the demand attribute includes at least one of a first demand attribute and a second demand attribute; wherein the first demand attribute comprises at least one of a maximum delay variation range, a maximum continuous packet loss tolerance, and a maximum out-of-order tolerance, and the second demand attribute comprises at least one of a minimum bandwidth, a maximum delay, and a maximum packet loss rate.
In some embodiments, the method further comprises: the first network element receives a subscription message from the DetNet controller; wherein the first network element obtains the first information if the subscription message comprises first indication information about the core network and obtains the second information if the subscription message comprises second indication information about the access network.
In some embodiments, the first network element is a session management function, SMF, network element; the first network element obtains the first information from a UPF network element in the core network, and obtains the second information from the access network through an AMF network element in the core network.
According to yet another aspect of the embodiments of the present disclosure, there is provided a network element, including: an acquisition module configured to acquire information required by a deterministic network DetNet controller for determining a forwarding policy of a mobile communication system in which the network element is located, wherein the information includes at least one of first information about a core network in which the network element is located and second information about an access network; and a transmitting module configured to transmit the information to the DetNet controller.
According to a further aspect of embodiments of the present disclosure, there is provided a network element, comprising: a memory; and a processor coupled to the memory and configured to perform the method of any of the above embodiments based on instructions stored in the memory.
According to still another aspect of the embodiments of the present disclosure, there is provided a mobile communication system including a core network including: the network element of any one of the embodiments above.
According to yet another aspect of the disclosed embodiments, there is provided a deterministic network system comprising: the mobile communication system according to any one of the above embodiments; and the DetNet controller.
According to a further aspect of the disclosed embodiments, a computer readable storage medium is provided, comprising computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method according to any of the embodiments described above.
According to a further aspect of the disclosed embodiments, a computer program product is provided, comprising a computer program, wherein the computer program, when executed by a processor, implements the method according to any of the above embodiments.
In the embodiment of the disclosure, a first network element in a mobile communication system acquires information required by a DetNet controller for determining a forwarding policy of the mobile communication system, and sends the information to the DetNet controller. Therefore, the DetNet controller can accurately determine the forwarding strategy of the mobile communication system according to the information, and the mobile communication system can be used as a DetNet node to forward the traffic in a deterministic manner.
The technical scheme of the present disclosure is described in further detail below through the accompanying drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of a mobile communication system according to some embodiments of the present disclosure;
fig. 2 is a schematic diagram of a mobile communication system according to other embodiments of the present disclosure;
fig. 3 is a schematic structural view of a mobile communication system according to still other embodiments of the present disclosure;
FIG. 4 is a flow diagram of a method of information interaction according to some embodiments of the present disclosure;
FIG. 5 is a flow diagram of a method of information interaction according to further embodiments of the present disclosure;
FIG. 6 is a flow diagram of a method of information interaction according to further embodiments of the present disclosure;
fig. 7 is a schematic diagram of a network element according to some embodiments of the present disclosure;
fig. 8 is a schematic structural diagram of a network element according to further embodiments of the present disclosure;
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments in this disclosure without inventive faculty, are intended to fall within the scope of this disclosure.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic diagram of a mobile communication system according to some embodiments of the present disclosure.
As shown in fig. 1, the mobile communication system 100 includes a core Network 110 and AN Access Network (AN) 120, and the core Network 110 includes a first Network element 111.
For example, the mobile communication system 100 may be a 5G mobile communication system, the core network 110 may be a 5G core network, and the access network 120 may be a radio access network (Radio Access Network, RAN).
The first network element 111 may be configured to acquire information required by the DetNet controller 200 for determining a forwarding policy of the mobile communication system 100 and transmit the information to the DetNet controller 200.
DetNet refers to the third layer (i.e., network layer) in the seven-layer architecture of the IOS/OSI reference model. For example, the DetNet controller 200 is a control plane device in DetNet.
Here, the information acquired by the first network element 111 includes at least one of first information about the core network 110 and second information about the access network 120.
For example, the information acquired by the first network element 111 includes first information about the core network 110; as another example, the information acquired by first network element 111 includes second information about access network 120; for another example, the information acquired by the first network element 111 includes first information and second information.
In some embodiments, referring to fig. 1, the core network 110 further includes a user plane function (User Plane Function, UPF) network element 112. The first information about the core network 110 may include at least one of first capability information of the UPF network element 112, first resource usage information, and node information of the DetNet node 210 adjacent to the mobile communication system 100.
For example, the first information may include any one of first capability information, first resource usage information, and node information of the UPF network element 112. That is, the first information may include first capability information, first resource usage information, or node information of the UPF network element 112.
For another example, the first information may include any two of first capability information, first resource usage information, and node information. That is, the first information may include: first capability information and first resource usage information; first capability information and node information; or, the first resource usage information and the node information.
For another example, the first information includes first capability information, first resource usage information, and node information.
The first capability information may represent the capability that the UPF network element 112 can provide to forward the DetNet flow. For example, the first capability information may include information such as a Worst case forwarding delay (world-case Forwarding Delay) and out-of-order (Mis-ordering) between the UPF network element 112 and the access network 120 via the N3 interface, a Worst case forwarding delay and out-of-order between another UPF network element via the N9 interface, a queuing mechanism implemented by the UPF network element 112, scheduling and shaping algorithms, a number of buffers dedicated to the DetNet by the UPF network element 112, and so on.
The first resource usage information may represent resource usage of the UPF network element 112. For example, the first resource usage information may include information such as traffic load of the UPF network element 112, resource utilization of hardware on which the operation is based, and the like. The traffic load of the UPF network element 112 may include the utilization of network bandwidth, the ratio of the number of current access users to the maximum number of access users, etc. The hardware may include a central processing unit (Central Processing Unit, CPU), memory, cache, and the like.
Referring to fig. 1, the UPF network element 112 is connected to a third layer (Lay 3, L3) network layer, and the node information may represent, for example, node information of a DetNet node 210 disposed in the L3 network layer adjacent to the UPF network element 112 via an N6 interface. The DetNet node 210 can be, for example, a router. It should be understood that only 1 DetNet node 210 is schematically shown in fig. 1, and in practice, there may be multiple DetNet nodes 210 adjacent to the mobile communication system 100.
In some embodiments, the node information may include at least one of an identification of a DetNet node 210 adjacent to the mobile communication system 100, and a time delay between the UPF network element 112 and the DetNet node 210. It should be understood that the node information may also include other characteristics of the link between the UPF network element 112 and the neighboring DetNet node 210, which will not be described in detail herein.
As some implementations, the above-mentioned respective information included in the first information may be collected by the UPF network element 112, and then, the first network element 111 may obtain the first information from the UPF network element 112. The node information in the first information will be described below as an example.
In some embodiments, the node information includes an identification of a DetNet node 210 adjacent to the mobile communication system 100. The UPF network element 112 can be configured to broadcast routing messages over the N6 interface and receive response messages sent by the DetNet node 210 in response to the routing messages. The response message carries the identity of the DetNet node 210. In this manner, the UPF network element 112 can obtain an identification of a DetNet node that is adjacent to the mobile communication system 100.
In other embodiments, the node information includes a time delay between the UPF network element 112 and the DetNet node 210 described above. The UPF network element 112 may be configured to monitor the quality of service (Quality of Service, qoS) of the N6 interface for the above-described latency.
It should be appreciated that the UPF network element 112 may also be configured to collect other respective information in the first information (e.g., the UPF network element 112 may be configured to QoS monitor the N3 interface or the N9 interface for forwarding delays in the first capability information described above), which will not be described in detail herein.
After the UPF network element 112 collects the first information, the first network element 111 may obtain the first information from the UPF network element 112. As some implementations, the first network element 111 may obtain the first information directly from the UPF network element 112. As further implementations, the first network element 111 may obtain the second information from the UPF network element 112 via other network elements in the core network 110.
In some embodiments, the second information about access network 120 may include at least one of second capability information and second resource usage information of access network 120. For example, the second information may include second capability information or second resource usage information of access network 120; as another example, the second information may include second capability information and second resource usage information of access network 120.
For example, the second capability information may include information such as forwarding delay and out-of-order of the air interface in the worst case, a queuing mechanism implemented by access network 120, a scheduling and shaping algorithm, a number of buffers dedicated to the DetNet by access network 120, and the like; the second resource usage information may include information of a utilization rate of an air interface resource, a load of a base station, and the like. The utilization of the air interface resources may be, for example, the utilization of physical resource blocks (Physical Resource Block, PRBs). The base station load may include utilization of network bandwidth, a ratio of a current access user number to a maximum access user number, and the like.
The above-described various information included in the second information may be collected by access network 120 (e.g., a base station in access network 120). For example, access network 120 may perform QoS monitoring to obtain the worst-case forwarding delay for the air interface.
After access network 120 collects the second information, first network element 111 may obtain the second information from access network 120. As some implementations, first network element 111 may obtain the second information directly from access network 120. As other implementations, first network element 111 may obtain the second information from access network 120 via other network elements in core network 110.
In the above embodiment, the first network element 111 in the mobile communication system 100 acquires information required by the DetNet controller 200 for determining the forwarding policy of the mobile communication system 100, and transmits the information to the DetNet controller 200. In this way, the DetNet controller 200 can accurately determine the forwarding policy of the mobile communication system 100 according to the information, and further, the mobile communication system 100 can perform deterministic forwarding on traffic as a DetNet node.
The mobile communication system 100 is further described below in connection with some embodiments.
In some embodiments, the information acquired by first network element 111 includes first information about core network 110 and second information about access network 120. In this manner, the DetNet controller 200 can be enabled to more fully acquire information required for determining the forwarding policy of the mobile communication system 100, and thus the DetNet controller 200 can more accurately determine the forwarding policy of the mobile communication system 100 according to the information.
In some embodiments, the first network element 111 may be configured to acquire the first information and the second information, and perform a combining process on the first information and the second information. For example, the first network element 111 may obtain the second information from the access network 120 at the same time as the first information from the UPF network element 112, and combine the first information and the second information to send to the DetNet controller 200.
As some implementations, the first network element 111 can directly encapsulate the first information and the second information in one message sent to the DetNet controller 200.
As other implementations, the first network element 111 may perform an operation on the same type of parameter in the first information and the second information, and carry the parameter package obtained after the operation in a message sent to the DetNet controller 200.
For example, the first information includes a first forwarding delay in the worst case between the UPF network element 112 and the access network 120 via the N3 interface, and a second forwarding delay in the worst case between the UPF network element and another UPF network element via the N9 interface, and the second information includes a third forwarding delay in the worst case for the air interface. In this case, the first network element 111 may add the first forwarding delay, the second forwarding delay, and the third forwarding delay to obtain the worst case total forwarding delay of the mobile communication system 100, and encapsulate the total forwarding delay in one message sent to the DetNet controller 200.
In some embodiments, the first network element 111 can also be configured to receive a subscription message from the DetNet controller 200.
In these embodiments, first network element 111 may be configured to obtain first information about core network 110 if the received subscription message includes first indication information about core network 110, and obtain second information about access network 120 if the received subscription message includes second indication information about access network 120. In this way, the first network element 111 can be enabled to obtain the first information and/or the second information according to the actual requirements of the DetNet controller 200.
As some implementations, the first network element 111 may send the first indication information in the subscription message to the UPF network element 112, so that the UPF network element 112 collects the first information according to the first indication information and reports the first information to the first network element 111. As other implementations, first network element 111 may send the second indication information in the subscription message to access network 120, so that access network 120 collects the second information according to the second indication information and reports the second information to first network element 111.
In some embodiments, the first indication information in the subscription message may include at least one of a first frequency and a first trigger condition. For example, the first indication information may include a first frequency or a first trigger condition; for another example, the first indication information may include a first frequency and a first trigger condition.
In these embodiments, the first network element 111 may be configured to periodically acquire the first information at the first frequency in case the first indication information comprises the first frequency, and the first network element 111 may be configured to acquire the first information when the first trigger condition is satisfied in case the first indication information comprises the first trigger condition. In this way, the first network element 111 can be enabled to acquire the first information in a manner that can more meet the actual requirement of the DetNet controller 200.
In other embodiments, the second indication information in the subscription message may include at least one of a second frequency and a second trigger condition. For example, the second indication information may include a second frequency or a second trigger condition; for another example, the second indication information may include a second frequency and a second trigger condition.
In these embodiments, the first network element 111 may be configured to periodically acquire the second information at the second frequency in case the second indication information comprises the second frequency, and the first network element 111 may be configured to acquire the second information when the second trigger condition is satisfied in case the second indication information comprises the second trigger condition. In this way, the first network element 111 can be enabled to acquire the second information in a manner that more meets the actual requirements of the DetNet controller 200.
It should be appreciated that the first frequency and the second frequency may be the same or different, and that the first trigger condition and the second trigger condition may be the same or different.
The mobile communication system 100 is further described below in conjunction with fig. 2. Fig. 2 is a schematic diagram of a mobile communication system according to other embodiments of the present disclosure.
As shown in fig. 2, the core network 110 in the mobile communication system 100 further comprises a second network element 113.
The second network element 113 may be configured to obtain the first parameter of the DetNet flow in the forwarding policy determined by the DetNet controller 200 according to the above information, convert the first parameter of the DetNet flow into the second parameter of the QoS flow, and send the second parameter of the QoS flow to the first network element 111.
Here, the first parameter includes a demand attribute of the DetNet flow, and a QoS Profile (QoS Profile) in the second parameter of the QoS flow includes a demand attribute in the first parameter.
In some embodiments, the demand attribute may include at least one of a first demand attribute and a second demand attribute.
For example, the demand attribute may include a first demand attribute or a second demand attribute. For another example, the demand attribute may include a first demand attribute and a second demand attribute.
In some embodiments, the first demand attribute may include at least one of a maximum latency variation range (Maximum Latency Variation), a maximum continuous loss tolerance (Maximum Consecutive Loss Tolerance), and a maximum out-of-order tolerance (Maximum Misordering Tolerance).
For example, the first demand attribute may include any one of a maximum range of latency variation, a maximum continuous loss tolerance, and a maximum out-of-order tolerance. That is, the first demand attribute may include a maximum range of latency variation, a maximum continuous loss tolerance, or a maximum out-of-order tolerance.
As another example, the first demand attribute may include any two of a maximum range of latency variation, a maximum continuous loss tolerance, and a maximum out-of-order tolerance. That is, the first demand attribute may include: maximum time delay variation range and maximum continuous packet loss tolerance; maximum delay variation range and maximum disorder tolerance; or, maximum continuous loss tolerance and maximum out-of-order tolerance.
As another example, the first demand attribute may include a maximum delay variation range, a maximum continuous loss tolerance, and a maximum out-of-order tolerance.
In some embodiments, the second demand attribute may include at least one of a minimum bandwidth (Minimun Bandwidth), a Maximum Latency (Maximum Latency), and a Maximum packet loss rate (Maximum Loss Rate, PLR). The minimum bandwidth represents the minimum bandwidth that the DetNet flow must guarantee.
For example, the second demand attribute may include any one of a minimum bandwidth, a maximum delay, and a maximum packet loss rate. That is, the second demand attribute may include a minimum bandwidth, a maximum delay, or a maximum packet loss rate.
As another example, the second demand attribute may include any two of a minimum bandwidth, a maximum delay, and a maximum packet loss rate. That is, the second demand attribute may include: minimum bandwidth and maximum delay; maximum time delay and maximum packet loss rate; or, minimum bandwidth and maximum packet loss rate.
As another example, the second demand attribute may include a minimum bandwidth, a maximum latency, and a maximum packet loss rate.
The UPF network element 112 may be configured to obtain the second parameters of the QoS flow from the first network element 111 and forward the DetNet flow according to the requirement attribute in the second parameters.
In the above embodiment, the second network element 113 in the core network 110 of the mobile communication system 100 converts the first parameter of the DetNet flow from the DetNet controller 200 into the second parameter of the QoS flow, and sends the second parameter to the first network element 111, so that the UPF network element 112 can forward the DetNet flow according to the requirement attribute included in the second parameter. In this manner, the mobile communication system 100 can be enabled to forward traffic deterministically in accordance with the forwarding policy determined by the DetNet controller 200.
In some embodiments, access network 120 may also be configured to obtain the second parameters of the QoS flows described above from first network element 111 and forward the DetNet flow according to the demand attribute in the second parameters. In this way, both the access network 120 and the UPF network element 112 in the mobile communication system 100 can be enabled to forward the DetNet flow according to the requirement attribute, so that the mobile communication system 100 can better forward traffic deterministically according to the forwarding policy determined by the DetNet controller 200.
In some embodiments, the first parameter of the DetNet Flow includes an identifier (e.g., flow ID) and a description of the DetNet Flow in addition to the demand attributes described above.
The description of the DetNet flow may include information such as source address, destination address, source port, destination port, flow label, dynamic host configuration protocol (Dynamic Host Configuration Protocol, DSCP) priority, protocol type, security parameter index (Security Parameter Index, SPI) value of internet protocol security (Internet Protocol Security, IPsec) and the like of the DetNet flow. The protocol type may be a multiprotocol label switching (Multi-Protocol Label Switching, MPLS) protocol, an Internet Protocol (IP), etc.
In these embodiments, the second parameter may include an identifier of the QoS flow (QoS Flow Identity, QFI) and a traffic flow template (Traffic Flow Template, TFT). The identifier of the QoS flow may include an identifier of the DetNet flow in the first parameter, and the TFT of the QoS flow may include a description of the DetNet flow in the first parameter.
In some embodiments, the QoS profile in the second parameter includes a 5G QoS identifier (5G QoS Identifier,5QI), and the 5QI includes the first requirement attribute described above. That is, the second parameter of the QoS flow may be made to include the first demand attribute of the DetNet flow by extending the parameters in 5 QI.
For example, 5QI may include deterministic packet delay budget (Packet Delay Budget-PDB Deterministic), maximum consecutive packet loss (Maximum Consecutive Loss), and Misordering (Misorbering). The deterministic packet delay budget is the maximum delay variation range, the maximum continuous packet loss is the maximum continuous packet loss tolerance, and the disorder is the maximum disorder tolerance.
In other embodiments, the QoS profile in the second parameter includes 5qi, and the 5qi does not include the first requirement attribute. That is, the second parameter of the QoS flow may be made to include the first demand attribute of the DetNet flow by extending the parameters in the QoS profile (instead of 5 QI).
In this manner, the UPF network element 112 is capable of forwarding the DetNet flow according to the first requirement attribute in the second parameter.
In some embodiments, the QoS profile in the second parameter includes a guaranteed stream bit Rate (Guaranteed Flow Bit Rate, GFBR) and 5qi,5qi including a Packet Delay Budget (PDB) and a packet Error Rate (Error Rate).
In these embodiments, the guaranteed stream bit rate is the minimum bandwidth in the second demand attribute, the packet delay budget is the maximum delay in the second demand attribute, and the packet error rate is the maximum packet loss rate in the second demand attribute.
In this manner, the UPF network element 112 is capable of forwarding the DetNet flow according to the second requirement attribute in the second parameter.
As some implementations, the first network element 111 can map a first parameter of the DetNet flow to a second parameter of the QoS flow. Specifically, the first network element 111 may map the identifier of the DetNet flow in the first parameter to the QFI in the second parameter, map the description of the DetNet flow in the first parameter to the TFT in the second parameter, and map the requirement attribute in the first parameter to the QoS profile in the second parameter. The mapping manner of the requirement attribute may be referred to the above embodiments, and will not be described herein.
The mobile communication system 100 is further described below in conjunction with fig. 3. Fig. 3 is a schematic structural view of a mobile communication system according to still other embodiments of the present disclosure.
In some embodiments, referring to fig. 3, the core network 110 further includes a network opening function (Network Exposure Function, NEF) network element 114. The first network element 111 may be configured to communicate with the DetNet controller 200 via the NEF network element 114.
For example, the first network element 111 can obtain the subscription message from the DetNet controller 200 via the NEF network element 114. For another example, the first network element 111 may send information needed by the DetNet controller 200 to the DetNet controller 200 via the NEF network element 114.
As some implementations, the first network element 111 can communicate with the DetNet controller 200 directly via the NEF network element 114. As other implementations, the first network element 111 may communicate with the DetNet controller 200 via the other network elements and the NEF network element 114 in sequence. For example, referring to fig. 3, the first network element 111 may communicate with the DetNet controller 200 via the unified data management (Unified Data Management, UDM) network element 117 and the NEF network element 114 in sequence.
Similarly, in some embodiments, the second network element 113 may also be configured to obtain the first parameter of the DetNet flow from the DetNet controller 200 via the NEF network element 114. And will not be described in detail herein.
In some embodiments, referring to fig. 3, the first network element 111 is a session management function (Session Management Function, SMF) network element. The first network element 111 may be configured to obtain first information about the core network 110 directly from the UPF network element 112 and to obtain second information from the access network 120 via the access and mobility management function (Access and Mobility Management Function, AMF) network element 115. Thus, the mobile communication system 100 can transmit information required by the DetNet controller 200 to the DetNet controller 200 without adding additional network elements and interfaces between network elements in the mobile communication system 100.
In some embodiments, the first network element 111 is an SMF network element and the second network element 113 is a time sensitive communication and time synchronization function (Time Sensitive Communication and Time Synchronization Function, TSCTSF) network element.
In these embodiments, the second network element 113 may be configured to send the second parameter of the converted QoS flow to the first network element 111 via the policy control function (Policy Control Function, PCF) network element 116. The UPF network element 112 may be configured to obtain the second parameter directly from the first network element 111, and the access network 120 may be configured to obtain the second parameter from the first network element 111 via the AMF network element 115.
In this way, both UPF network element 112 and access network 120 can forward the DetNet flow according to the requirement attribute included in the second parameter without adding additional network elements and interfaces between network elements in mobile communication system 100.
Fig. 4 is a flow diagram of an information interaction method according to some embodiments of the present disclosure.
As shown in fig. 4, the information interaction method includes steps 402 to 404.
In step 402, the first network element 111 in the core network 110 of the mobile communication system 100 acquires information required by the DetNet controller 200 for determining a forwarding policy of the mobile communication system 100.
Here, the information required by the DetNet controller 200 includes at least one of first information about the core network 110 and second information about the access network 120.
In step 404, the first network element 111 sends information to the DetNet controller 200.
The descriptions of steps 402 to 404 may be referred to the descriptions in the embodiments of the mobile communication system 100, and are not repeated here.
In the above embodiment, the first network element 111 in the mobile communication system 100 acquires information required by the DetNet controller 200 for determining the forwarding policy of the mobile communication system 100, and transmits the information to the DetNet controller 200. In this manner, the DetNet controller 200 can accurately determine the forwarding policy of the mobile communication system 100 according to the information, thereby enabling the mobile communication system 100 to perform deterministic forwarding of traffic as a DetNet node.
Fig. 5 is a flow chart of an information interaction method according to further embodiments of the present disclosure.
As shown in fig. 5, the information interaction method may further include at least one of two sets of steps, where one set of steps includes steps 502 to 508 and the other set of steps includes step 510.
In some embodiments, the information interaction method further comprises steps 502-508.
In step 502, the second network element 113 in the core network 110 obtains the first parameter of the DetNet flow in the forwarding policy determined by the DetNet controller 200 according to the information.
Here, the first parameter includes a demand attribute of the DetNet flow.
In step 504, the second network element 113 converts the first parameter into a second parameter of the QoS flow.
Here, the QoS profile in the second parameter includes the requirement attribute in the first parameter.
In step 506, the second network element 113 sends the second parameter to the first network element 111.
In step 508, the upf network element 112 obtains the second parameter from the first network element 111 and forwards the DetNet flow according to the requirement attribute in the second parameter.
In the above embodiment, the second network element 113 in the core network 110 of the mobile communication system 100 converts the first parameter of the DetNet flow from the DetNet controller 200 into the second parameter of the QoS flow, and sends the second parameter to the first network element 111, so that the UPF network element 112 can forward the DetNet flow according to the requirement attribute included in the second parameter. In this manner, the mobile communication system 100 performs deterministic forwarding of traffic according to the forwarding policy determined by the DetNet controller 200.
In other embodiments, the information interaction method further comprises step 510.
At step 510, the first network element 111 receives a subscription message from the DetNet controller 200.
First network element 111 obtains first information about core network 110 if the received subscription message includes first indication information about core network 110 and obtains second information about access network 120 if the received subscription message includes second indication information about access network 120.
In this way, the first network element 111 can obtain the first information and/or the second information according to the actual requirement of the DetNet controller 200.
It should be understood that the descriptions of steps 502 to 510 are only required to be described in the embodiments of the mobile communication system 100, and are not repeated here.
Fig. 6 is a flow diagram of a method of information interaction according to further embodiments of the present disclosure.
The first network element 111 is schematically shown in fig. 6 as an SMF network element 111. The information interaction method comprises steps 601-611.
In step 601, the nef network element 114 receives a subscription message from the DetNet controller 200.
At step 602, smf network element 111 receives a subscription message from DetNet controller 200 sent by NEF network element 114.
In step 603, the smf network element 111 sends the first indication information in the subscription message to the UPF network element 112.
At step 604, smf network element 111 sends the second indication information in the subscription message to AMF network element 115.
Amf network element 115 sends the second indication information to access network 120 in step 605.
At step 606, amf network element 115 obtains second information about access network 120 from access network 120.
In step 607, the smf network element 111 obtains the second information from the AMF network element 115.
At step 608, the smf network element 111 obtains first information about the UPF network element 112 from the UPF network element 112.
In step 609, the smf network element 111 performs a merging process on the acquired first information and second information.
In step 610, the smf network element 111 sends the information obtained after the combining process to the NEF network element 114.
The nef network element 114 sends the information to the DetNet controller 200 in step 611.
Fig. 7 is a schematic diagram of a network element according to some embodiments of the present disclosure.
As shown in fig. 7, the network element 700 includes an acquisition module 701 and a transmission module 702.
The acquisition module 701 is configured to acquire information needed by the deterministic network DetNet controller for determining the forwarding policy of the mobile communication system in which the network element 700 is located.
Here, the information includes at least one of first information about a core network in which the network element 700 is located and second information about an access network.
The transmit module 702 is configured to transmit information to the DetNet controller.
It should be appreciated that the network element 700 may also include other various modules to perform the operations performed by the first network element 111 in any of the embodiments described above.
Fig. 8 is a schematic structural diagram of a network element according to further embodiments of the present disclosure.
As shown in fig. 8, the network element 800 comprises a memory 801 and a processor 802 coupled to the memory 801, the processor 802 being configured to perform the method of any of the previous embodiments based on instructions stored in the memory 801.
The memory 801 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory may store, for example, an operating system, application programs, boot Loader (Boot Loader), and other programs.
Network element 800 may also include input-output interfaces 803, network interfaces 804, storage interfaces 805, and the like. These interfaces 803, 804, 805 and the memory 801 and the processor 802 may be connected via a bus 806, for example. The input output interface 803 provides a connection interface for input output devices such as a display, mouse, keyboard, touch screen, etc. The network interface 804 provides a connection interface for various networking devices. Storage interface 805 provides a connection interface for external storage devices such as SD cards, U-discs, and the like.
It should be appreciated that network element 700/800 may be the first network element 111 of any of the embodiments described above and configured to perform the operations performed by the first network element 111 of any of the embodiments described above.
The disclosed embodiments also provide a mobile communication system including the first network element (e.g., network element 700/800) of any one of the embodiments above.
The disclosed embodiments also provide a deterministic network system comprising the mobile communication system (e.g., mobile communication system 100) of any of the embodiments described above and the DetNet controller (e.g., detNet controller 200) of any of the embodiments described above.
In some embodiments, referring to fig. 1-3, the deterministic network system can further include one or more DetNet nodes 210.
The disclosed embodiments also provide a computer readable storage medium comprising computer program instructions which, when executed by a processor, implement the method of any of the above embodiments.
The disclosed embodiments also provide a computer program product comprising a computer program which, when executed by a processor, implements the method of any of the above embodiments.
Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, so that the same or similar parts between the embodiments are mutually referred to. For the information interaction method, the network element and the deterministic network system embodiment, the description is simpler because the information interaction method, the network element and the deterministic network system embodiment basically correspond to the mobile communication system embodiment, and the relevant points are only needed to be referred to in the part of the description of the mobile communication system embodiment.
It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that functions specified in one or more of the flowcharts and/or one or more of the blocks in the block diagrams may be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (31)
1. A mobile communication system comprising a core network and an access network, the core network comprising:
a first network element configured to obtain information required by a deterministic network DetNet controller for determining a forwarding policy of the mobile communication system and to send the information to the DetNet controller, wherein the information comprises at least one of first information about the core network and second information about the access network.
2. The system of claim 1, wherein the first information comprises at least one of first capability information of a user plane function, UPF, network element in the core network, first resource usage information, and node information of a DetNet node adjacent to the mobile communication system.
3. The system of claim 2, wherein the node information includes at least one of an identification of the DetNet node, and a time delay between the UPF network element and the DetNet node.
4. The system of claim 3, wherein the node information comprises an identification of the DetNet node;
the UPF network element is configured to broadcast a routing message over an N6 interface; and receiving a response message sent by the DetNet node in response to the routing message, wherein the response message carries the identification of the DetNet node.
5. A system according to claim 3, wherein the node information comprises the time delay;
the UPF network element is configured to perform quality of service QoS monitoring on the N6 interface to obtain the time delay.
6. The system of claim 1, wherein the second information comprises at least one of second capability information and second resource usage information of the access network.
7. The system of any of claims 1-6, wherein the core network further comprises:
a second network element configured to obtain a first parameter of a DetNet flow in a forwarding policy determined by the DetNet controller according to the information; converting the first parameter into a second parameter of the QoS flow, and sending the second parameter to the first network element, wherein the first parameter comprises a demand attribute of the DetNet flow, and a QoS configuration file in the second parameter comprises the demand attribute;
and the UPF network element is configured to acquire the second parameter from the first network element and forward the DetNet flow according to the requirement attribute in the second parameter.
8. The system of claim 7, wherein the access network is configured to obtain the second parameters from the first network element and forward the DetNet flow according to the demand attribute in the second parameters.
9. The system of claim 7, wherein the demand attribute comprises at least one of a first demand attribute and a second demand attribute;
wherein the first demand attribute comprises at least one of a maximum delay variation range, a maximum continuous packet loss tolerance, and a maximum out-of-order tolerance, and the second demand attribute comprises at least one of a minimum bandwidth, a maximum delay, and a maximum packet loss rate.
10. The system of any of claims 1-6, wherein the first network element is configured to receive a subscription message from the DetNet controller; acquiring first information in case the subscription message includes first indication information about the core network; and acquiring second information in the case that the subscription message comprises second indication information about the access network.
11. The system of claim 10, wherein the first indication information comprises at least one of a first frequency and a first trigger condition;
the first network element is configured to periodically acquire the first information at the first frequency; and/or acquiring the first information when the first trigger condition is met.
12. The system of claim 10, wherein the second indication information includes at least one of a second frequency and a second trigger condition;
the first network element is configured to periodically acquire the second information at the second frequency; and/or acquiring the first information when the second trigger condition is met.
13. The system according to any of claims 1-6, wherein the core network further comprises a network open function, NEF, network element;
wherein the first network element is configured to communicate with the DetNet controller via the NEF network element.
14. The system according to any of claims 1-6, wherein the first network element is a session management function, SMF, network element;
wherein the first network element is configured to obtain the first information from a UPF network element in the core network and to obtain the second information from the access network via an access and mobility management function AMF network element in the core network.
15. An information interaction method, comprising:
a first network element in a core network of a mobile communication system acquires information needed by a deterministic network DetNet controller for determining a forwarding policy of the mobile communication system, wherein the information comprises at least one of first information about the core network and second information about an access network;
The first network element sends the information to the DetNet controller.
16. The method of claim 15, wherein the first information comprises at least one of first capability information of a UPF network element in the core network, first resource usage information, and node information of a DetNet node adjacent to the mobile communication system.
17. The method of claim 16, wherein the node information comprises at least one of an identification of the DetNet node, and a time delay between the UPF network element and the DetNet node.
18. The method of claim 17, wherein the identification of the DetNet node is carried in a response message received by the UPF network element, the response message being sent by the DetNet node in response to a routing message broadcast by the UPF network element over an N6 interface.
19. The method of claim 17, wherein the delay is obtained by QoS monitoring of an N6 interface by the UPF network element.
20. The method of claim 15, wherein the second information comprises at least one of second capability information and second resource usage information of the access network.
21. The method of any of claims 15-20, further comprising:
A second network element in the core network acquires a first parameter of a DetNet flow in a forwarding strategy determined by the DetNet controller according to the information, wherein the first parameter comprises a demand attribute of the DetNet flow;
the second network element converts the first parameter into a second parameter of the QoS flow, and a QoS configuration file in the second parameter comprises the requirement attribute;
the second network element sends the second parameter to the first network element;
and the UPF network element in the core network acquires the second parameter from the first network element, and forwards the DetNet flow according to the requirement attribute in the second parameter.
22. The method of claim 21, further comprising:
the first network element sends the second parameter to the access network;
and the access network forwards the DetNet flow according to the requirement attribute in the second parameter.
23. The method of claim 21, wherein the demand attribute comprises at least one of a first demand attribute and a second demand attribute;
wherein the first demand attribute comprises at least one of a maximum delay variation range, a maximum continuous packet loss tolerance, and a maximum out-of-order tolerance, and the second demand attribute comprises at least one of a minimum bandwidth, a maximum delay, and a maximum packet loss rate.
24. The method of any of claims 15-20, further comprising:
the first network element receives a subscription message from the DetNet controller;
wherein the first network element obtains the first information if the subscription message comprises first indication information about the core network and obtains the second information if the subscription message comprises second indication information about the access network.
25. The method according to any of claims 15-20, wherein the first network element is a session management function, SMF, network element;
the first network element obtains the first information from a UPF network element in the core network, and obtains the second information from the access network through an AMF network element in the core network.
26. A network element, comprising:
an acquisition module configured to acquire information required by a deterministic network DetNet controller for determining a forwarding policy of a mobile communication system in which the network element is located, wherein the information includes at least one of first information about a core network in which the network element is located and second information about an access network;
and a transmitting module configured to transmit the information to the DetNet controller.
27. A network element, comprising:
a memory; and
a processor coupled to the memory and configured to perform the method of any of claims 15-20, 24, 25 based on instructions stored in the memory.
28. A mobile communication system comprising a core network, the core network comprising:
the network element of claim 26 or 27.
29. A deterministic network system comprising:
the mobile communication system of any one of claims 1-14, 28; and
the DetNet controller.
30. A computer readable storage medium comprising computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method of any of claims 15-25.
31. A computer program product comprising a computer program, wherein the computer program, when executed by a processor, implements the method of any of claims 15-25.
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