CN111757389B - Communication device and method - Google Patents

Communication device and method Download PDF

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Publication number
CN111757389B
CN111757389B CN201910253185.XA CN201910253185A CN111757389B CN 111757389 B CN111757389 B CN 111757389B CN 201910253185 A CN201910253185 A CN 201910253185A CN 111757389 B CN111757389 B CN 111757389B
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service
processing unit
service processing
target
balancing node
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CN111757389A (en
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王刚
刘春�
张晓奎
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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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
    • H04W28/08—Load balancing or load distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The embodiment of the invention provides a communication device and a method, which are applied to a 5G core network, wherein the 5G core network comprises the following components: the system comprises an access and mobile management function (AMF) entity and a plurality of service processing units connected with the AMF entity; the device is located in an AMF entity and comprises: the link establishment request module is used for receiving a link establishment request sent by an access network; the link establishment judging module is used for judging whether a service processing unit corresponding to the link establishment request exists or not; the first determining module is used for determining a first target service processing unit in the plurality of service processing units when the service processing unit corresponding to the link establishment request does not exist; a link establishing module, configured to establish a stream control transmission protocol SCTP link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link. The embodiment of the invention can improve the processing capacity of the 5G core network for the link establishment request and the processing capacity of the 5G core network for the data sent by the access network.

Description

Communication device and method
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communications apparatus and a communications method.
Background
5G is an abbreviation of the fifth generation mobile communication technology, also referred to as 5G network. Compared with a 4G network, a 5G network has superior communication performance and complete communication functions, and a 5G core network is an important component of a 5G network architecture.
In the prior art, when a large number of users or 5G access networks are connected to a 5G core network, the 5G core network may first establish a single communication channel, and use the single channel to process data sent by the users or the 5G access networks. When the channel fails and the communication data processed by the channel exceeds the load range of the channel, the channel may fail, and the user or the 5G access network needs to reestablish the communication channel with the 5G and the core network. Moreover, when there are a large number of users or the 5G access network communicates with the 5G core network, a plurality of network elements in the 5G core network also need to communicate with each other, however, most of the network elements can only be provided with a single interface to transmit data, so that the transmission capability between the network elements is limited.
Disclosure of Invention
In view of the above, embodiments of the present invention are proposed to provide a communication apparatus and a corresponding communication method that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention discloses a communication apparatus, which is applied to a 5G core network, where the 5G core network includes: an access and mobility management function (AMF) entity and a plurality of service processing units connected with the AMF entity; the apparatus is located at the AMF entity and comprises:
the link establishment request module is used for receiving a link establishment request sent by an access network;
the link establishment judging module is used for judging whether a service processing unit corresponding to the link establishment request exists or not;
a first determining module, configured to determine, when there is no service processing unit corresponding to the link establishment request, a first target service processing unit in the plurality of service processing units;
a link establishing module, configured to establish a stream control transmission protocol SCTP link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link.
Preferably, the AMF entity is provided with at least one service balancing node, and the service balancing node is connected to the plurality of service processing units; the first determining module includes:
the target service balancing node submodule is used for determining a target service balancing node;
the working state acquisition submodule is used for acquiring the working state of the service processing unit by adopting the target service balancing node;
and the first service processing unit submodule is used for determining the first target service processing unit in the service processing unit with the working state being the idle state.
Preferably, the service processing unit is provided with a unit identifier; the service balancing node is provided with unit sequencing information generated by sequencing service identifiers in sequence; the working state obtaining sub-module comprises:
and the state reading unit is used for adopting the unit sequencing information to sequentially read the working states.
Preferably, the link establishment request comprises an internet protocol, IP, address; the link establishing module comprises:
the first unit identification submodule is used for determining a target unit identification matched with the first target service processing unit;
and the relation establishing submodule is used for establishing the unique corresponding relation between the IP address and the target unit identification.
Preferably, the target service balancing node submodule includes:
a load reading unit, configured to read a load coefficient of each service balancing node; the load factor is the ratio of the number of the service processing units in the idle state in the working state;
and the service balancing node determining unit is used for determining the service balancing node with the minimum load coefficient as the target service balancing node.
Preferably, the working state obtaining sub-module further includes:
and the service identifier adding unit is used for adding a new service identifier to the unit sequencing information when the target service balancing node acquires the new service identifier.
Preferably, the working state obtaining sub-module further includes:
and the service identifier deleting submodule is used for deleting the service identifier corresponding to the service processing unit in the fault state of the working state in the unit sequencing information when the target service balancing node reads that the working state of the service processing unit is the fault state.
Preferably, the apparatus further comprises:
the data acquisition module is used for acquiring World Wide WEB (WWW) WEB data; the WEB data comprises Uniform Resource Locator (URL) information;
a second determining module, configured to determine a second target service processing unit in the plurality of service processing units according to the URL information;
and the data sending module is used for sending the WEB data to the second target business processing unit, and the second target business processing unit is used for determining at least one sending object according to the WEB data and sending the WEB data to the sending object.
Preferably, the AMF entity is provided with at least one WEB service node, the WEB service node is connected to the plurality of business processing units, and the WEB service node is provided with a uniquely matched service identifier; the second determining module includes:
the address identifier generation submodule is used for generating an address identifier by adopting the URL information;
the service identification submodule is used for determining a target service identification matched with the address identification by adopting the address identification;
the reading submodule is used for reading the working states of a plurality of business processing units connected with the target WEB service node;
and the first service processing unit submodule is used for determining the second target service processing unit in the service processing unit with the working state being the idle state.
Preferably, the 5G core network further includes a session management function SMF entity, a plurality of user plane functions UPF entities, and a UPF balancing node; the device further comprises:
a session request receiving module, configured to receive a session request sent by an access network;
a session request sending module, configured to send the session request to the SMF entity; the SMF entity is used for generating a control message by adopting the session request and sending the control message to the UPF balancing node, wherein the control message comprises a second service identifier; and the UPF balancing node is used for selecting a target UPF entity from the UPF entities by adopting the second service identifier and establishing a session link between the SMF entity and the target UPF entity.
The embodiment of the invention also discloses a communication method which is applied to the device, and the method comprises the following steps:
the AMF entity receives a link establishment request sent by an access network;
the AMF entity judges whether a service processing unit corresponding to the link establishment request exists or not;
when the service processing unit corresponding to the link establishment request does not exist, the AMF entity determines a first target service processing unit in the plurality of service processing units;
the AMF entity establishes a Stream Control Transmission Protocol (SCTP) link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link.
Preferably, the AMF entity is provided with at least one service balancing node, and the service balancing node is connected to the plurality of service processing units; the step of the AMF entity determining a first target service processing unit among the plurality of service processing units includes:
determining a target service balancing node;
acquiring the working state of the service processing unit by adopting the target service balancing node;
and determining the first target service processing unit in the service processing unit with the working state being the idle state.
Preferably, the service processing unit is provided with a unit identifier; the service balancing node is provided with unit sequencing information generated by sequencing service identifiers in sequence; the step of acquiring the working state of the service processing unit by using the target service balancing node comprises the following steps:
and reading the working states in sequence by adopting the unit sequencing information.
Preferably, the link establishment request comprises an internet protocol, IP, address; the step of the AMF entity establishing the SCTP link between the first target service processing unit and the access network includes:
determining a target unit identifier matched with the first target service processing unit;
and establishing the unique corresponding relation between the IP address and the target unit identifier.
Preferably, the step of determining a target traffic balancing node includes:
reading the load coefficient of each service balancing node; the load factor is the ratio of the number of the service processing units in the idle state in the working state;
and determining the service balancing node with the minimum load coefficient as a target service balancing node.
Preferably, the step of acquiring the working state of the service processing unit by using the target service balancing node further includes:
and when the target service balancing node acquires a new service identifier, adding the new service identifier to the unit sequencing information.
Preferably, the step of acquiring the working state of the service processing unit by using the target service balancing node further includes:
and when the target service balancing node reads that the working state of the service processing unit is a fault state, deleting the service identification corresponding to the service processing unit in the fault state of the working state in the unit sequencing information.
Preferably, the method further comprises:
the AMF entity acquires world wide WEB (Web) WEB data; the WEB data comprises Uniform Resource Locator (URL) information;
the AMF entity determines a second target service processing unit in the plurality of service processing units according to the URL information;
and the AMF entity sends the WEB data to the second target business processing unit, and the second target business processing unit is used for determining at least one sending object according to the WEB data and sending the WEB data to the sending object.
Preferably, the AMF entity is provided with at least one WEB service node, the WEB service node is connected to the plurality of business processing units, and the WEB service node is provided with a uniquely matched service identifier; the step of determining, by the AMF entity, a second target service processing unit among the plurality of service processing units according to the URL information includes:
generating an address identifier by adopting the URL information;
determining a target service identifier matched with the address identifier by adopting the address identifier;
reading the working states of a plurality of business processing units connected with a target WEB service node;
and determining the second target service processing unit in the service processing unit with the working state being the idle state.
Preferably, the 5G core network further includes a session management function SMF entity, a plurality of user plane functions UPF entities, and a UPF balancing node; the method further comprises the following steps:
the AMF entity receives a session request sent by an access network;
the AMF entity sends the session request to the SMF entity; the SMF entity is used for generating a control message by adopting the session request and sending the control message to the UPF balancing node; wherein the control message contains a second service identifier; and the UPF balancing node is used for selecting a target UPF entity from the UPF entities by adopting the second service identifier and establishing a session link between the SMF entity and the target UPF entity.
The embodiment of the invention has the following advantages: the AMF entity in the 5G core network screens the link establishment request sent by the access network, when the AMF entity judges that no service processing unit corresponding to the link establishment request exists, the AMF entity determines a first target service processing unit among the plurality of service processing units, and establishing an SCTP link corresponding to the link establishment request and a first target service processing unit, where the first target service processing unit is configured to communicate with the access network using the SCTP link, therefore, when the 5G core network receives different link establishment requests, corresponding SCTP links can be established between different service processing units and different access networks, the processing capability of the 5G core network for the link establishment requests is improved, different service processing units are allocated to different access networks, so that the processing capacity of the 5G core network on data sent by the access networks is improved.
Drawings
Fig. 1 is a block diagram of a first embodiment of a communication apparatus according to the present invention;
fig. 2 is a block diagram of a second embodiment of a communication apparatus according to the present invention;
fig. 3 is a flow chart of the steps of an embodiment of a method of communication of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a block diagram of a first embodiment of a communication device according to the present invention is shown, where the communication device is applicable to a 5G core network, where the 5G core network includes: an access and Mobility Management function (AMF) entity and a plurality of service processing units connected with the AMF entity; the apparatus is located in the AMF entity, and an embodiment of the present invention may specifically include the following modules:
a link establishment request module 101, configured to receive a link establishment request sent by an access network;
in an embodiment of the present invention, a 5G core Network is connected to an Access Network, which is an Access Network suitable for a fifth Generation mobile communication technology, that is, a 5G Access Network (5G Access Network), where the Access Network may be an Access Network of 3gpp (3rd Generation Partnership Project) (e.g., LTE (Long Term Evolution), 5G-NR (5rd-Generation New Radio, New Radio for 5 th Generation mobile communication technology)), or an Access Network of non-3gpp (non-3rd Generation Partnership Project) (e.g., a common WI-FI (Wireless-Fidelity) Network); the access network is the base station if we speak of the most common handset to surf the internet. Connection of 5G core network and access network
A link establishment judging module 102, configured to judge whether a service processing unit corresponding to the link establishment request exists;
the AMF entity stores the distribution table. The distribution table is used to record an established SCTP (Stream Control Transmission Protocol) link, a service processing unit for processing the SCTP link, and an access network corresponding to the SCTP link. When receiving a link establishment request sent by an access network, the AMF entity may determine whether an SCTP link and a service processing unit corresponding to a current access network exist by looking up a distribution table.
A first determining module 103, configured to determine, when there is no service processing unit corresponding to the link establishment request, a first target service processing unit in the plurality of service processing units;
the service processing unit is a logic structure which can be modulated in a 5G core network, and can process one or more service messages received by the service processing unit.
And when the service processing unit corresponding to the link establishment request does not exist, the AMF entity selects a target service processing unit for the current access network so as to process the communication data between the access network and the 5G core network.
A link establishing module 104, configured to establish a stream control transmission protocol SCTP link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link.
After determining the first target service processing unit, the AMF entity directly establishes an SCTP link between the first target service processing unit and the access network, so that the first target service processing unit can directly process a message (for example, coding and decoding of signaling data, processing of a signaling flow, and the like) sent by the access network.
In the embodiment of the invention, the AMF entity in the 5G core network screens the link establishment request sent by the access network, when the AMF entity judges that the service processing unit corresponding to the link establishment request does not exist, the AMF entity determines a first target service processing unit in the plurality of service processing units, and establishing an SCTP link corresponding to the link establishment request and a first target service processing unit, where the first target service processing unit is configured to communicate with the access network using the SCTP link, therefore, when the 5G core network receives different link establishment requests, corresponding SCTP links can be established between different service processing units and different access networks, the processing capability of the 5G core network for the link establishment requests is improved, different service processing units are allocated to different access networks, so that the processing capacity of the 5G core network on data sent by the access networks is improved.
Referring to fig. 2, a block diagram of a second embodiment of a communication apparatus according to the present invention is shown, where the apparatus may be applied to a 5G core network, where the 5G core network includes: an access and mobility management function (AMF) entity and a plurality of service processing units connected with the AMF entity; the apparatus is located in the AMF entity, and an embodiment of the present invention may specifically include the following modules:
a link establishment request module 201, configured to receive a link establishment request sent by an access network;
when the access network needs to communicate with the 5G core network, the SCTP link needs to be established first, and then the access network needs to generate a link establishment request corresponding to the SCTP link and send the link establishment request to the 5G core network. The 5G core network receives a link establishment request sent by the access network through the AMF entity.
A link establishment judging module 202, configured to judge whether a service processing unit corresponding to the link establishment request exists;
specifically, the link establishment request includes an IP (Internet Protocol) address, the distribution table records the IP address of the connected access network, and whether an IP address consistent with the current link establishment request exists in the distribution table is queried. And when the IP address consistent with the current link establishment request exists in the distribution list, determining that the service processing unit corresponding to the current link establishment request exists. And when the IP address consistent with the current link establishment request does not exist in the distribution list, determining that the service processing unit corresponding to the current link establishment request does not exist.
A first determining module 203, configured to determine a first target service processing unit in the plurality of service processing units when there is no service processing unit corresponding to the link establishment request;
when a service processing unit corresponding to the link establishment request exists, the AMF entity judges that the link establishment request is a repeated request, does not reallocate the service processing unit for the link establishment request, and feeds back a state message of the established SCTP link to the access network.
In a preferred embodiment of the present invention, the AMF entity is provided with at least one service balancing node, and the service balancing node is connected to the plurality of service processing units; the first determining module 203 comprises: the system comprises a target service balancing node submodule, a working state obtaining submodule and a first service processing unit submodule.
The target service balancing node submodule is used for determining a target service balancing node;
when the AMF entity is provided with a plurality of service balancing nodes, a target service balancing node needs to be determined first.
In a preferred embodiment of the present invention, the target service balancing node submodule includes: the device comprises a load reading unit and a service balancing node determining unit.
A load reading unit, configured to read a load coefficient of each service balancing node; the load factor is the ratio of the number of the service processing units in the idle state in the working state;
for example: the service balancing node a is connected with 10 service processing units, wherein, the working states of 3 service processing units are in an idle state, and the load factor of the service balancing node a is 30%.
And the service balancing node determining unit is used for determining the service balancing node with the minimum load coefficient as the target service balancing node.
By determining the service balancing node with the minimum load coefficient as the target service balancing node, when the AMF entity has a plurality of service balancing nodes, the load of each service balancing node can be balanced, and the occurrence of service faults caused by the fact that part of the service balancing nodes are overloaded is prevented.
In a preferred example of the present invention, the AMF entity may be provided with a general balancing node, receive a link establishment request with the general balancing node, and invoke the load reading unit and the service balancing node determining unit.
The working state acquisition submodule is used for acquiring the working state of the service processing unit by adopting the target service balancing node;
and reading the current working state of each service processing unit connected with the target balancing node by adopting the target balancing node.
In a preferred embodiment of the present invention, the service processing unit is provided with a unit identifier; the service balancing node is provided with unit sequencing information generated by sequencing service identifiers in sequence; the working state obtaining sub-module may include: and the state reading unit is used for adopting the unit sequencing information to sequentially read the working states.
And the first service processing unit submodule is used for determining the first target service processing unit in the service processing unit with the working state being the idle state.
In an example, the working states of the service processing units connected to the same service balancing node are sequentially read, when the working state of one service processing unit is read to be an idle state, the service processing unit is determined to be a target service processing unit, and the reading of the rest service processing units in which the working states are not read is stopped.
In a preferred embodiment of the present invention, the service processing unit reports its service identifier and working status to the service balancing node connected to it according to a certain frequency (e.g. 1 second/time). The working state obtaining sub-module further comprises: a service identifier adding unit; and the service identifier adding unit is used for adding a new service identifier to the unit sequencing information when the target service balancing node acquires the new service identifier.
In a preferred embodiment of the present invention, the working state of the service processing unit includes one of an idle state, a busy state and a fault state. The service balancing node is provided with standby unit information, and the standby unit information consists of service identifications of one or more service processing units with working states being fault states. The working state obtaining sub-module further comprises: a service identifier deleting unit; and the service identifier deleting unit is used for deleting the service identifier corresponding to the service processing unit in the fault state of the working state in the unit sequencing information when the target service balancing node reads that the working state of the service processing unit is the fault state. The service identifier deleting unit may be further configured to add the service identifier to the standby unit information.
A link establishing module 204, configured to establish a stream control transmission protocol SCTP link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link.
After the AMF entity determines the first target service processing unit, the AMF entity establishes an SCTP link corresponding to the current service link establishment request. After completing the SCTP link, the access network may send the communication data to the first target node over the SCTP link. The communication data is data generated by the access network and transmitted to the 5G core network.
In a preferred embodiment of the present invention, the link establishing module 204 may include:
the first unit identification submodule is used for determining a target unit identification matched with the first target service processing unit;
and the relation establishing submodule is used for establishing the unique corresponding relation between the IP address and the target unit identification.
The correspondence may be saved to a distribution table. The communication data may include an IP address, service information. When the 5G core network receives communication data sent by the access network, a target service identifier corresponding to the IP address of the communication data is determined in the distribution table, and the service information is sent to a target service processing unit corresponding to the target service identifier through the service balancing node, and the target service processing unit can respond to the service information.
Different service processing units are allocated to different IP address access networks, and the corresponding service processing units are adopted to respond to the service information sent by the only corresponding IP address access network, so that the high-concurrency response of the 5G core network to the communication data sent by the core network is realized.
In a preferred example of the present invention, the service balancing node may detect the status of the established SCTP link in real time. When the access network which has established the SCTP link fails, the corresponding service processing unit is released, and the working state of the service processing unit is updated to an idle state. When the service processing unit which has established the SCTP link fails, a new service processing unit is allocated to the SCTP link, and the service identifier of the service processing unit corresponding to the SCTP link is updated in the allocation table.
In a preferred embodiment of the present invention, the apparatus may further include: a data acquisition module 205, a second determination module 206, and a data transmission module 207.
A data obtaining module 205, configured to obtain World Wide WEB (World Wide WEB) data; the WEB data includes URL (Uniform Resource Locator) information;
the 5G core Network may further include an SMF (Session Management Function) entity, an NSSF (Network Slice Selection Function) entity, an AUSF (Authentication Server Function) entity, an UDM (Unified Data Management) entity, and a PCF (Policy Control Function) entity, which are connected to the AMF entity.
The AMF may obtain the WEB data from one or more of an SMF entity, an NSSF entity, an AUSF entity, a UDM entity and a PCF entity.
A second determining module 206, configured to determine a second target service processing unit in the plurality of service processing units according to the URL information;
in a preferred embodiment of the present invention, the AMF entity is provided with at least one WEB service node, the WEB service node is connected to a plurality of the service processing units, and the WEB service node is provided with a uniquely matched service identifier; the second determination module 206 includes: the system comprises an address identifier generation submodule, a service identifier submodule, a reading submodule and a first business processing unit submodule.
The address identifier generation submodule is used for generating an address identifier by adopting the URL information;
in one example of the present invention, the URL information may be converted by using an existing algorithm (e.g., a hash algorithm, a polling algorithm) to generate the address identifier.
In another example of the present invention, the URL information includes an IP address, and the IP address in the URL information may be used as the address identifier.
The service identification submodule is used for determining a target service identification matched with the address identification by adopting the address identification information;
the service identification and the address identification may consist of the same characters, different ordering and frequency count. For example: the service identification is composed of one or more of the numbers 0 to 1 in an order, and the address identification is also composed of one or more of the numbers 0 to 1 in an order, so that a limited number of consecutive characters in the address identification correspond to a unique one of the service identifications. For example: the address identifier is 03465165, the service identifiers are 00-99, and 2 characters are continuously taken from the address identifier to match one of the service identifiers. And (3) matching the first two-digit character in the address identifier with the service identifier, if the service identifier matched with the address identifier is 03, sending the address identifier to the WEB service node with the service identifier 03.
The reading submodule is used for reading the working states of a plurality of business processing units connected with the target WEB service node;
the working state of the service processing unit comprises one of an idle state, a busy state and a fault state.
And the first service processing unit submodule is used for determining the second target service processing unit in the service processing unit with the working state being the idle state.
And determining one service processing unit with the working state being the idle state as a second target service processing unit.
In one example of the invention, a WEB service node records unit identifications of various business processing units connected with the WEB service node. The service processing unit reports its own service identifier and working state to the WEB service node connected to it according to a certain frequency (for example, 1 second/time). And when the WEB service node acquires the fault state reported by the service processing unit, the WEB service node deletes the unit identifier of the service processing unit. And when the WEB service node acquires the new service identifier, storing the new service identifier.
A data sending module 207, configured to send the WEB data to the second target service processing unit; the second target business processing unit is used for determining at least one sending object according to the WEB data and sending the WEB data to the sending object.
The WEB data further comprises service information, the second target service processing unit determines at least one sending object by using the service information in the WEB data, and sends the WEB data to the sending object by using a HyperText Transfer Protocol (HTTP), wherein the sending object is one or more of an SMF entity, an NSSF entity, an AUSF entity, an UDM entity and a PCF entity.
By adopting the second target service processing unit, the WEB data is transmitted to one or more sending objects, so that the WEB data transmission capability between each entity in the 5G core network is improved.
In a preferred embodiment of the present invention, the 5G core network further includes a session management Function SMF entity, a plurality of UPF (User Plane Function) entities, and a UPF balancing node; the embodiment of the invention can also comprise: a session request receiving module 208 and a session request sending module 209.
A session request receiving module 208, configured to receive a session request sent by an access network;
a session request sending module 209, configured to send the session request to the SMF entity; the SMF entity is used for generating a control message by adopting the session request and sending the control message to the UPF balancing node, wherein the control message comprises a second service identifier; and the UPF balancing node is used for selecting a target UPF entity from the UPF entities by adopting the second service identifier and establishing a session link between the SMF entity and the target UPF entity.
The UPF entity is provided with a uniquely matched UPF identification. The UPF balancing node is provided with a first queue and a second queue, the first queue is used for recording UPF identifications corresponding to UPF entities with working states of idle states or busy states, and the second queue is used for recording UPF identifications corresponding to UPF entities with working states of fault states. The UPF entity can report the working state and the UPF identification of the UPF balancing node according to a certain frequency. The working state of the UPF entity comprises one of a fault state, an idle state and a busy state. And when the UPF balancing node acquires the fault state reported by the UPF entity, the UPF balancing node moves the UPF identifier of the UPF entity from the first queue to the second queue. And when the UPF balancing node acquires that the working state reported by the UPF entity is changed from the fault state to the idle state, the UPF balancing node moves the UPF identifier of the UPF entity from the second queue to the first queue.
And when the UPF balancing node receives the control message, judging whether the UPF identification matched with the second service identification in the control message exists. When the UPF identification matched with the second service identification in the control message exists, determining that the UPF entity corresponding to the UPF identification is a target UPF entity; and when the UPF identification matched with the second service identification in the control message does not exist, the UPF balancing node does not respond to the control message, namely one UPF entity is not selected as the target UPF entity.
The registration of the access network in the 5G core network is realized by calling the link establishment request module 201, the link establishment judging module 202, the first determining module 203 and the link establishment module 204, and the 5G core network can determine the target UPF entity corresponding to the access network by sending a session request to the 5G core network, so that the target UPF entity and the access network can communicate.
In the embodiment of the present invention, an AMF entity in a 5G core network filters a link establishment request sent by an access network, and when the AMF entity determines that there is no service processing unit corresponding to the link establishment request, the AMF entity determines a first target service processing unit in the plurality of service processing units and establishes an SCTP link corresponding to the link establishment request and the first target service processing unit, where the first target service processing unit is configured to communicate with the access network by using the SCTP link, so that when the 5G core network receives different link establishment requests, different service processing units can establish corresponding SCTP links with different access networks, and the processing capability of the 5G core network for the link establishment request is improved, and different service processing units are allocated to different access networks, so that the processing capability of the 5G core network for data sent by the access network is improved, the method and the device solve the problem that a 5G core network in the prior art cannot process a large number of access network requests in a short time and establish the SCTP link with the access network requests.
Further, after the AMF entity in the 5G core network acquires the WEB data, the second target service processing unit can be determined in the plurality of service processing units according to the URL information in the WEB data. After the WEB data are sent to the second target business processing unit, the second target business processing unit can determine a sending object corresponding to the WEB data and send the WEB data to the sending object, so that the WEB data are sent to one or more sending objects, and the problem that in the prior art, when WEB data are forwarded between entities of a 5G core network, the WEB data can only be forwarded in a point-to-point mode, and the WEB data forwarding efficiency is limited is solved.
Further, the AMF entity sends a session request received from the access network to the SMF entity, the SMF entity generates a control message by adopting the session request, and sends the control message to the UPF balancing node, wherein the control message comprises a second service identifier; and the UPF balancing node selects a target UPF entity from the UPF entities by adopting the second service identifier and establishes a session link between the SMF entity and the target UPF entity. Therefore, the session link is established between different UPF entities and different access networks, the condition of overload of the UPF entities is prevented, and the efficiency of connection between the UPF entities and the access networks and the communication quality between the UPF entities and the access networks are ensured.
Referring to fig. 3, a flowchart illustrating steps of an embodiment of a communication method according to the present invention is a communication method, which is applied to a 5G core network, where the 5G core network includes: an access and mobility management function (AMF) entity and a plurality of service processing units connected with the AMF entity; the embodiment of the invention specifically comprises the following steps:
step 301, the AMF entity receives a link establishment request sent by an access network;
step 302, the AMF entity determines whether there is a service processing unit corresponding to the link establishment request;
step 303, when there is no service processing unit corresponding to the link establishment request, the AMF entity determines a first target service processing unit in the plurality of service processing units;
in a preferred embodiment of the present invention, the AMF entity is provided with at least one service balancing node, and the service balancing node is connected to the plurality of service processing units; step 303 may include:
substep S11, determining a target service balancing node;
in a preferred embodiment of the present invention, the sub-step S11 may include:
substep S111, reading the load coefficients of the service balancing nodes; the load factor is the ratio of the number of the service processing units in the idle state in the working state;
and a substep S112, determining the service balancing node with the minimum load coefficient as a target service balancing node.
A substep S12, adopting the target service balancing node to obtain the working state of the service processing unit;
in a preferred embodiment of the present invention, the service processing unit is provided with a unit identifier; the service balancing node is provided with unit sequencing information generated by sequencing service identifiers in sequence; the sub-step S12 may include:
and a substep S121 of reading the working states in sequence by using the unit sorting information.
And a substep S13, determining the first target service processing unit in the service processing unit whose working state is the idle state.
In a preferred embodiment of the present invention, the sub-step S12 may further include: and when the target service balancing node acquires a new service identifier, adding the new service identifier to the unit sequencing information.
In a preferred embodiment of the present invention, the sub-step S12 may further include: and when the target service balancing node reads that the working state of the service processing unit is a fault state, deleting the service identification corresponding to the service processing unit in the fault state of the working state in the unit sequencing information.
Step 304, the AMF entity establishes a stream control transmission protocol, SCTP, link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link.
In a preferred embodiment of the present invention, step 204 may comprise:
substep S21, determining a target unit identity matching said first target service processing unit;
and a substep S22 of establishing a unique correspondence between the IP address and the target unit identifier.
In a preferred embodiment of the present invention, the method may further include:
step 305, the AMF entity acquires World Wide WEB (WWW) data; the WEB data comprises Uniform Resource Locator (URL) information;
step 306, the AMF entity determines a second target service processing unit in the plurality of service processing units according to the URL information;
in a preferred embodiment of the present invention, the AMF entity is provided with at least one WEB service node, the WEB service node is connected to a plurality of the service processing units, and the WEB service node is provided with a uniquely matched service identifier; step 306 may include:
substep S31, generating address identification by using the URL information;
substep S32, determining a target service identifier matched with the address identifier by using the address identifier information;
a substep S33, reading the working states of a plurality of business processing units connected with the target WEB service node;
and a substep S34, determining the second target service processing unit in the service processing unit whose working state is the idle state.
Step 307, the AMF entity sends the WEB data to the second target service processing unit; the second target business processing unit is used for determining at least one sending object according to the WEB data and sending the WEB data to the sending object.
In a preferred embodiment of the present invention, the 5G core network further includes a session management function SMF entity, a plurality of user plane functions UPF entities, and a UPF balancing node; the embodiment of the invention can also comprise:
step 308, the AMF entity receives a session request sent by an access network;
step 309, the AMF entity sends the session request to the SMF entity; the SMF entity is used for generating a control message by adopting the session request and sending the control message to the UPF balancing node, wherein the control message comprises a second service identifier; and the UPF balancing node is used for selecting a target UPF entity from the UPF entities by adopting the second service identifier and establishing a session link between the SMF entity and the target UPF entity.
As for the method embodiment, since it is basically similar to the apparatus embodiment, the description is simple, and the relevant points can be referred to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can 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 terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, 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 terminal 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 terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The communication device and the communication method provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (20)

1. A communication apparatus, applied to a 5G core network, wherein the 5G core network includes: an access and mobility management function (AMF) entity and a plurality of service processing units connected with the AMF entity; the AMF entity is provided with at least one service balancing node which is connected with the plurality of service processing units; the service balancing node is provided with unit sequencing information generated by sequencing service identifiers in sequence; the apparatus is located at the AMF entity and comprises:
the link establishment request module is used for receiving a link establishment request sent by an access network;
the link establishment judging module is used for judging whether a service processing unit corresponding to the link establishment request exists or not;
a first determining module, configured to determine, when there is no service processing unit corresponding to the link establishment request, a first target service processing unit in the plurality of service processing units; the first target service processing unit is determined by the service balancing node according to the working state of the service processing unit, and the working state is read according to the unit sequencing information;
a link establishing module, configured to establish a stream control transmission protocol SCTP link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link.
2. The apparatus of claim 1, wherein the first determining module comprises:
the target service balancing node submodule is used for determining a target service balancing node;
the working state acquisition submodule is used for acquiring the working state of the service processing unit by adopting the target service balancing node;
and the first service processing unit submodule is used for determining the first target service processing unit in the service processing unit with the working state being the idle state.
3. The apparatus of claim 2, wherein the service processing unit is provided with a unit identifier; the working state obtaining sub-module comprises:
and the state reading unit is used for adopting the unit sequencing information to sequentially read the working states.
4. The apparatus of claim 2 or 3, wherein the link establishment request comprises an internet protocol, IP, address; the link establishing module comprises:
the first unit identification submodule is used for determining a target unit identification matched with the first target service processing unit;
and the relation establishing submodule is used for establishing the unique corresponding relation between the IP address and the target unit identification.
5. The apparatus of claim 2 or 3, wherein the target traffic balancing node submodule comprises:
a load reading unit, configured to read a load coefficient of each service balancing node; the load factor is the ratio of the number of the service processing units in the idle state in the working state;
and the service balancing node determining unit is used for determining the service balancing node with the minimum load coefficient as the target service balancing node.
6. The apparatus of claim 3, wherein the operating state obtaining sub-module further comprises:
and the service identifier adding unit is used for adding a new service identifier to the unit sequencing information when the target service balancing node acquires the new service identifier.
7. The apparatus of claim 3, wherein the operating state obtaining sub-module further comprises:
and the service identifier deleting unit is used for deleting the service identifier corresponding to the service processing unit in the fault state of the working state in the unit sequencing information when the target service balancing node reads that the working state of the service processing unit is the fault state.
8. The apparatus of claim 1, further comprising:
the data acquisition module is used for acquiring World Wide WEB (WWW) WEB data; the WEB data comprises Uniform Resource Locator (URL) information;
a second determining module, configured to determine a second target service processing unit in the plurality of service processing units according to the URL information;
and the data sending module is used for sending the WEB data to the second target business processing unit, and the second target business processing unit is used for determining at least one sending object according to the WEB data and sending the WEB data to the sending object.
9. The apparatus according to claim 8, wherein the AMF entity is provided with at least one WEB service node, the WEB service node is connected with a plurality of the business processing units, and the WEB service node is provided with a uniquely matched service identifier; the second determining module includes:
the address identifier generation submodule is used for generating an address identifier by adopting the URL information;
the service identification submodule is used for determining a target service identification matched with the address identification by adopting the address identification;
the reading submodule is used for reading the working states of a plurality of business processing units connected with the target WEB service node;
and the first service processing unit submodule is used for determining the second target service processing unit in the service processing unit with the working state being the idle state.
10. The apparatus of claim 1, wherein the 5G core network further comprises a session management function, SMF, entity, a plurality of user plane functions, UPF, entities, and a UPF balancing node; the device further comprises:
a session request receiving module, configured to receive a session request sent by an access network;
a session request sending module, configured to send the session request to the SMF entity; the SMF entity is used for generating a control message by adopting the session request and sending the control message to the UPF balancing node, wherein the control message comprises a second service identifier; and the UPF balancing node is used for selecting a target UPF entity from the UPF entities by adopting the second service identifier and establishing a session link between the SMF entity and the target UPF entity.
11. A communication method, applied to the apparatus of claim 1, wherein the AMF entity is provided with at least one service balancing node, and the service balancing node is connected to the plurality of service processing units; the service balancing node is provided with unit sequencing information generated by sequencing service identifiers in sequence; the method comprises the following steps:
the AMF entity receives a link establishment request sent by an access network;
the AMF entity judges whether a service processing unit corresponding to the link establishment request exists or not;
when the service processing unit corresponding to the link establishment request does not exist, the AMF entity determines a first target service processing unit in the plurality of service processing units; the first target service processing unit is determined by the service balancing node according to the working state of the service processing unit, and the working state is read according to the unit sequencing information;
the AMF entity establishes a Stream Control Transmission Protocol (SCTP) link between the first target service processing unit and the access network; the first target service processing unit is used for communicating with the access network by adopting the SCTP link.
12. The method of claim 11, wherein the step of the AMF entity determining the first target service processing unit among the plurality of service processing units comprises:
determining a target service balancing node;
acquiring the working state of the service processing unit by adopting the target service balancing node;
and determining the first target service processing unit in the service processing unit with the working state being the idle state.
13. The method of claim 12, wherein the service processing unit is provided with a unit identifier; the step of acquiring the working state of the service processing unit by using the target service balancing node includes:
and reading the working states in sequence by adopting the unit sequencing information.
14. The method according to claim 12 or 13, wherein the link establishment request comprises an internet protocol, IP, address; the step of the AMF entity establishing the SCTP link between the first target service processing unit and the access network includes:
determining a target unit identifier matched with the first target service processing unit;
and establishing the unique corresponding relation between the IP address and the target unit identifier.
15. The method according to claim 12 or 13, wherein the step of determining a target traffic balancing node comprises:
reading the load coefficient of each service balancing node; the load factor is the ratio of the number of the service processing units in the idle state in the working state;
and determining the service balancing node with the minimum load coefficient as a target service balancing node.
16. The method according to claim 13, wherein the step of obtaining the operating status of the service processing unit by using the target service balancing node further comprises:
and when the target service balancing node acquires a new service identifier, adding the new service identifier to the unit sequencing information.
17. The method according to claim 13, wherein the step of obtaining the operating status of the service processing unit by using the target service balancing node further comprises:
and when the target service balancing node reads that the working state of the service processing unit is a fault state, deleting the service identification corresponding to the service processing unit in the fault state of the working state in the unit sequencing information.
18. The method of claim 11, further comprising:
the AMF entity acquires world wide WEB (Web) WEB data; the WEB data comprises Uniform Resource Locator (URL) information;
the AMF entity determines a second target service processing unit in the plurality of service processing units according to the URL information;
and the AMF entity sends the WEB data to the second target business processing unit, and the second target business processing unit is used for determining at least one sending object according to the WEB data and sending the WEB data to the sending object.
19. The method according to claim 18, wherein the AMF entity is provided with at least one WEB service node, the WEB service node is connected with a plurality of the business processing units, and the WEB service node is provided with a uniquely matched service identifier; the step of determining, by the AMF entity, a second target service processing unit among the plurality of service processing units according to the URL information includes:
generating an address identifier by adopting the URL information;
determining a target service identifier matched with the address identifier by adopting the address identifier;
reading the working states of a plurality of business processing units connected with a target WEB service node;
and determining the second target service processing unit in the service processing unit with the working state being the idle state.
20. The method of claim 11, wherein the 5G core network further comprises a session management function, SMF, entity, a plurality of user plane functions, UPF, entities, and a UPF balancing node; the method further comprises the following steps:
the AMF entity receives a session request sent by an access network;
the AMF entity sends the session request to the SMF entity; the SMF entity is used for generating a control message by adopting the session request and sending the control message to the UPF balancing node; wherein the control message contains a second service identifier; and the UPF balancing node is used for selecting a target UPF entity from the UPF entities by adopting the second service identifier and establishing a session link between the SMF entity and the target UPF entity.
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