CN112333764B - Network slice selection method and device, slice mapping system and network equipment - Google Patents
Network slice selection method and device, slice mapping system and network equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
Abstract
The invention provides a method for selecting a network slice, which comprises the following steps: receiving a first slice identifier of a roaming slice sent by a home public land mobile network, and acquiring a corresponding service type and a tariff strategy; receiving a second slice identifier which is transmitted by the visiting public land mobile network and allows roaming to access the slice; and obtaining the corresponding service type and tariff strategy; respectively acquiring two slice identifiers with the same service type and highest tariff strategy matching degree from the first slice identifier and the second slice identifier, and constructing the two slice identifiers as mapping slices; the mapping slice is sent to the visited public land mobile network to select a network slice for the roaming user. The corresponding device, the slice mapping system and the network equipment are also provided, and the mapping relation of slice identifiers among different operators can be quickly constructed aiming at the non-standardized S-NSSAI non-uniform situation, so that a user can conveniently select slices in a roaming scene across operators, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for selecting a network slice, a slice mapping system, and a network device.
Background
Slice identification is the most important parameter in network slice technology, and typically uses an S-nsai (Single Network Selection Assistance Information, single network slice selection assistance information) to uniquely identify a network slice, uses an nsai to identify a group of network slices, and uses an nsai to identify a set of one or more S-nsais. S-NSSAI is a 32-bit integer comprising SST and SD, wherein SST (Slice/Service type) represents Slice/Service type, 8 bits total; SD (Slice Differentiator) as an optional field, the slice/service type can be supplemented for 24 bits in total to distinguish network slices for multiple subdivision scenarios under the same SST. The protocol specifies that 0-127 in the SST field is a standardized value range, 128-255 in the SST field and the SD field belong to an operator custom range, and the operator custom value is valid only in the home network.
In the roaming scenario across operators, it is required for non-standardized S-nsais that both operators negotiate one by one for making service to reach a mapping agreement, and update the mapping agreement to the NSSF visiting the public land mobile network in real time. Along with the diversification of 5G network slice service scenes, the one-to-one slice mapping mode is adopted, negotiations and network maintenance workload of operators of both sides are increased, slice selection of users in roaming scenes is finally affected, and user experience is reduced.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a network slice selection method and device, a slice mapping system and network equipment, which can quickly construct mapping relations of slice identifiers among different operators under the condition of non-standardized S-NSSAI non-uniformity, so that a user can conveniently select slices in a roaming scene across operators, and the user experience is improved.
In a first aspect, an embodiment of the present invention provides a method for selecting a network slice, which is applied to a slice mapping system, where the method includes: receiving a first slice identifier of a roaming slice signed by a roaming user, which is sent by a home public land mobile network to which the roaming user belongs; acquiring a corresponding service type and a tariff strategy according to the first slice identifier; receiving a second slice identifier of all allowed roaming access slices sent by a visiting public land mobile network where a roaming user is currently located; acquiring the corresponding service type and tariff strategy according to the second slice identifier; comparing the service types and the tariff strategies corresponding to the first slice identifier and the second slice identifier, respectively acquiring two slice identifiers with the same service type and highest tariff strategy matching degree from the first slice identifier and the second slice identifier, and constructing the two slice identifiers as mapping slices; the mapping slice is sent to the visited public land mobile network to select a network slice for the roaming user.
Preferably, the obtaining the corresponding service type and tariff policy according to the first slice identifier includes: acquiring a service type of a first slice identifier according to a preset first field rule; and sending a first query request to a strategy control functional body of the home public land mobile network to obtain a tariff strategy corresponding to the first cut mark, wherein the first query request comprises the first cut mark, and the tariff strategy comprises a telephone charge quota and a flow quota.
Preferably, the obtaining the corresponding service type and tariff policy according to the second slice identifier includes: acquiring a service type of a second slice identifier according to a preset second field rule; and sending a second query request to a strategy control function body of the visiting public land mobile network to acquire a tariff strategy corresponding to a second slice identifier, wherein the second query request comprises the second slice identifier, and the home public land mobile network and the visiting public land mobile network respectively belong to different operators which are different places from each other.
Preferably, before the receiving the first slice identifier of the roaming slice subscribed by the roaming user and sent by the home public land mobile network to which the roaming user belongs, the network slice selecting method further includes: receiving and storing a first field rule sent by a home public land mobile network, wherein the first field rule comprises a mapping relation between a field of a home public land mobile network slice and a field meaning; and receiving and storing a second field rule sent by the visiting public land mobile network, wherein the second field rule comprises a mapping relation between a field of the visiting public land mobile network slice and a field meaning, and the field meaning comprises a service type.
In a second aspect, an embodiment of the present invention further provides a method for selecting a network slice, which is applied to a visited public land mobile network, where the method includes: receiving a registration request sent by a roaming user; sending a request for acquiring a roaming slice signed by a roaming user to a home public land mobile network according to the registration request so that the home public land mobile network sends a first slice identifier to a slice mapping system; transmitting all second slice identifiers of the allowed roaming access slices to the slice mapping system; and receiving the mapping slice sent by the slice mapping system, and selecting a slice corresponding to the second slice identifier in the mapping slice as a slice accessed by the roaming user.
Preferably, the method for selecting a network slice further comprises: and feeding back a tariff strategy corresponding to the second slice identifier to the slice mapping system according to the received second query request. Before receiving the registration request sent by the roaming user, the network slice selection method further comprises the following steps: and sending a second field rule to the slice mapping system, wherein the second field rule comprises a mapping relation between a field of the visited public land mobile network slice and a field meaning, and the field meaning comprises a service type.
In a third aspect, an embodiment of the present invention further provides a slice mapping system, including a first receiving module, a first obtaining module, a second receiving module, a second obtaining module, a mapping module, and a sending module. And the first receiving module is used for receiving a first slice identifier of the roaming slice signed by the roaming user, which is sent by the home public land mobile network to which the roaming user belongs. The first acquisition module is connected with the first receiving module and is used for acquiring the corresponding service type and tariff strategy according to the first slice identifier. And the second receiving module is used for receiving the second slice identification of all the allowed roaming access slices of the roaming user, which is sent by the current visited public land mobile network where the roaming user is located. The second acquisition module is connected with the second receiving module and is used for acquiring the corresponding service type and tariff strategy according to the second slice identifier. The mapping module is respectively connected with the first acquisition module and the second acquisition module, and is used for comparing the service types and the tariff strategies corresponding to the first slice identifier and the second slice identifier, respectively acquiring two slice identifiers with the same service types and highest tariff strategy matching degree from the first slice identifier and the second slice identifier, and constructing the two slice identifiers as mapping slices. And the sending module is connected with the mapping module and used for sending the mapping slice to the visiting public land mobile network so as to select a network slice for the roaming user.
Preferably, the slice mapping system further comprises a first storage module and a second storage module. And the first storage module is used for receiving and storing a first field rule sent by the home public land mobile network, wherein the first field rule comprises a mapping relation between fields of the home public land mobile network slice and field meanings. And the second storage module is used for receiving and storing a second field rule sent by the visiting public land mobile network, wherein the second field rule comprises a mapping relation between a field of the visiting public land mobile network slice and a field meaning, and the field meaning comprises a service type.
In a fourth aspect, an embodiment of the present invention further provides a network slice selection device, which is applied to a visited public land mobile network, where the network slice selection device includes a receiving unit, a sending unit, and a selecting unit. And the receiving unit is used for receiving the registration request sent by the roaming user. And the sending unit is connected with the receiving unit and is used for sending a request for acquiring the roaming slice signed by the roaming user to the home public land mobile network according to the registration request so as to enable the home public land mobile network to send the first slice identifier to the slice mapping system. And the sending unit is also used for sending the second slice identification of all the allowed roaming access slices to the slice mapping system. And the selection unit is used for receiving the mapping slice sent by the slice mapping system and selecting a slice corresponding to the second slice identifier in the mapping slice as a slice accessed by the roaming user.
In a fifth aspect, an embodiment of the present invention further provides a network device, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the method for selecting a network slice according to the first aspect when the processor executes the computer instructions.
According to the network slice selection method, the slice mapping system, the device and the equipment provided by the embodiment of the invention, corresponding service types and tariff strategies are obtained according to the first slice identifier provided by the home public land mobile network of the roaming user and the second slice identifier provided by the visiting public land mobile network, two slice identifiers with the same service types and highest tariff strategy matching degree in the two slice identifiers are matched, and the two slice identifiers are constructed as mapping slices, so that the user can quickly select proper slice access according to the mapping slices in a roaming scene of the cross operators, the user experience is improved, and the slice selection based on the tariff strategy matching among the cross operators can be realized, and business fairness is realized.
Drawings
Fig. 1: a flowchart of a method for selecting a network slice according to embodiment 1 of the present invention;
fig. 2: the structure diagram of the slice mapping system in embodiment 3 of the present invention is shown;
fig. 3: the network device according to embodiment 5 of the present invention is a block diagram.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the present invention, a network slice selection method, a slice mapping system, a network slice selection device and a network device according to the present invention are described in further detail below with reference to the accompanying drawings and embodiments.
Example 1:
as shown in fig. 1, the present embodiment provides a network slice selection method, which is applied to a slice mapping system, wherein the slice mapping system is connected with each operator system, and the network slice selection method includes the following steps:
step 101, receiving a first slice identifier of a roaming slice signed by a roaming user sent by a home public land mobile network to which the roaming user belongs.
In this embodiment, the slice mapping system is connected to the systems of the operator a, the operator B, and the operator C, and if the user of the operator a roams to the network of the operator B, the home public land mobile network (i.e., the network of the operator a) to which the roaming user belongs sends the first slice identifier of the roaming slice subscribed by the roaming user to the slice mapping system. Wherein the number of slice identifiers in the first slice identifier is a plurality.
Optionally, before receiving the first slice identifier of the roaming subscriber signed-up roaming slice sent by the home public land mobile network where the roaming subscriber is located, the network slice selection method further includes: receiving and storing a first field rule sent by a home public land mobile network, wherein the first field rule comprises a mapping relation between a field of a home public land mobile network slice and a field meaning; and receiving and storing a second field rule sent by the visiting public land mobile network, wherein the second field rule comprises a mapping relation between a field of the visiting public land mobile network slice and a field meaning, and the field meaning comprises a service type.
In this embodiment, the slice mapping system receives and stores the first field rule sent by the home public land mobile network (i.e., operator a network) to obtain a preset first field rule. The first field rule includes a mapping relationship between a field of the network slice of the operator a and a field meaning, for example, S-nsai-1 in the first slice identifier is a 32-bit integer, where a field meaning corresponding to a first bit field in the 32-bit integer is a service type, a specific value of the first bit field indicates a specific service type, a field meaning corresponding to the second bit field and the third bit field is an industry, and a specific value of the second bit field and the third bit field indicates a specific industry. The slice mapping system receives and stores the second field rules sent by the visited public land mobile network (i.e., operator B network) to obtain preset second field rules. The second field rule includes a mapping relationship between a field of the network slice of the operator B and a field meaning, for example, S-nsai-2 in the second slice identifier is a 32-bit integer, a field meaning corresponding to a first bit field in the 32-bit integer is a service type, and a specific value of the first bit field indicates a specific service type.
And 102, acquiring the corresponding service type and tariff strategy according to the first slice identifier.
In this embodiment, the slice mapping system obtains the service type corresponding to the first slice identifier according to the first slice identifier and a preset first field rule. The policy control function (PCF, policy Control Function) stores the sliced tariff policy information, and at the same time, the slice mapping system sends a first query request to the policy control function of the home public land mobile network (i.e. the operator a network) to obtain a tariff policy corresponding to the first slice identifier, where the first query request includes the first slice identifier, and the tariff policy includes a telephone charge credit and a traffic credit. For example, in the first slice identifier, the service type thereof and the tariff policy information shown in table 1, the service type of S-nsai_1 in the first slice identifier of the operator a network is 2, and the tariff policy includes a credit rating unit of 200 yuan and a traffic rating unit of 12G. The first slice identifier of the operator a network comprises a plurality of slice identifiers and corresponding service types and tariff policies.
Table 1 first cut identity and its service type and tariff policy information
Step 103, receiving the second slice identification of all the allowed roaming accessible slices of the visiting public land mobile network where the roaming user is located.
In this embodiment, since the operator a network and the operator B network achieve the slice roaming agreement, the visited public land mobile network (i.e., the operator B network) where the roaming user is located sends all the second slice identifiers of the allowed roaming accessible slices to the slice mapping system.
And 104, acquiring the corresponding service type and tariff strategy according to the second slice identifier.
In this embodiment, the slice mapping system obtains the service type of the second slice identifier according to the second slice identifier and a preset second field rule, and at the same time, the slice mapping system sends a second query request to a policy control function body of the visited public land mobile network (i.e. operator B network) to obtain a tariff policy corresponding to the second slice identifier. The second query request includes a second slice identifier, and the tariff policy includes other tariff information such as a credit rating unit, a traffic rating unit, and the like. For example, in the second slice identifier shown in table 2, the service type of S-nsai_2 in the second slice identifier of the operator B network, and the tariff policy information, the tariff policy includes a credit rating of 180 yuan, and a traffic rating of 10G. The second slice identifier of the carrier B network includes a plurality of slice identifiers and corresponding service types and tariff policies.
Table 2 second slice identifier and service type, tariff policy information
It should be noted that the home public land mobile network and the visited public land mobile network belong to different operators that are different from each other.
Step 105, comparing the service types and the tariff strategies corresponding to the first slice identifier and the second slice identifier, respectively obtaining two slice identifiers with the same service type and highest tariff strategy matching degree from the first slice identifier and the second slice identifier, and constructing the two slice identifiers as mapping slices.
In this embodiment, the slice mapping system compares the service type and the tariff policy corresponding to each slice identifier in the first slice identifier with the service type and the tariff policy corresponding to each slice identifier in the second slice identifier. Specifically, the service type 2 of the S-NSSAI_1 in the first slice identifier of the operator A is compared with the service types and the tariff policies of the S-NSSAI_1 and the S-NSSAI_2 in the second slice identifier of the operator B respectively until the comparison of the service types and the tariff policies of all the slice identifiers is completed, wherein the tariff policy comprises a telephone charge of 200 yuan and a flow of 12G. Considering that under the conditions of the same service type and highest tariff policy matching degree, the requirements of users on slice services are more similar, and the quality of the acquired slice services is also more similar, therefore, the slice mapping system acquires two slice identifiers with the same service type and highest tariff policy matching degree, and constructs the two slice identifiers into a mapping slice pair. For example, after the slice mapping system completes the comparison, the service types of the S-nsai_1 of the operator a network and the S-nsai_2 of the operator B network are the same, and the tariff policies are the closest, i.e. the two slices form a mapping slice. When the user of the operator A roams across operators, the S-NSSAI_2 is accessed to the network of the operator B, so that the quality of the slice service corresponding to the S-NSSAI_1 accessed to the network of the operator A can be obtained, and the cost of the slice service provided by each of the operator A and the operator B is equivalent, thereby ensuring the business fairness among the operators.
Step 106, the mapping slice is sent to the visited public land mobile network to select a network slice for the roaming user.
In this embodiment, the slice mapping system sends the mapping slices (i.e. S-nsai_1 of the operator a network and S-nsai_2 of the operator B network) to the core network NSSF network element of the operator B network, so that the core network NSSF network element of the operator B network can quickly select an optimal network slice for the roaming user according to the mapping slices, thereby providing the roaming user with the best matching slice service. It should be noted that, when the mapping slice acquired by the slice mapping system includes multiple sets of mapping slice pairs, for example, there are mapping slice pairs for each service type, the slice mapping system sends the acquired multiple sets of mapping slice pairs to a core network NSSF network element of the visited public land mobile network, and when the visited public land mobile network performs slice selection, the slice mapping system performs corresponding slice selection according to the actual service requirement of the user.
In the network slice selection method provided by the embodiment, according to the first slice identifier provided by the home public land mobile network of the roaming user and the second slice identifier provided by the visiting public land mobile network, two slice identifiers with the same service types and highest tariff policy matching degree in the two slice identifiers are matched, and the matched two slice identifiers are constructed into the mapping slice, so that when the user roams across operators, the mobile network can select corresponding slice access for the user according to the mapping slice, even though the non-standardized S-NSSAI of each operator is not uniform, and user experience is improved. And because the mapping slices are obtained according to the conditions that the service types of the slice identifiers of different operators are the same and the matching degree of the tariff strategies is highest, the slice selection based on the matching of the tariff strategies among the operators can be realized, and the business fairness is realized.
Example 2:
the embodiment provides a network slice selection method, which is applied to a visited public land mobile network, and comprises the following steps:
step 201, receiving a registration request sent by a roaming user.
In this embodiment, the slice mapping system is connected to the systems of the operator a, the operator B, and the operator C, and the user of the operator a roams to the operator B network, and initiates a registration request to the operator B network. Wherein the registration request includes a subscriber identity, e.g. an IMSI (International Mobile Subscriber Identity ). The operator a network in this embodiment is a home public land mobile network, and the operator B network is a visited public land mobile network.
Optionally, before receiving the registration request sent by the roaming user, the network slice selection method further includes: the visiting public land mobile network sends a second field rule to the slice mapping system, wherein the second field rule comprises a mapping relation between a field of a visiting public land mobile network slice and a field meaning, and the field meaning comprises a service type, so that the slice mapping system can acquire a specific service type corresponding to a second slice identifier according to the second field rule.
Step 202, a request for obtaining a roaming slice signed by a roaming user is sent to a home public land mobile network according to the registration request, so that the home public land mobile network sends a first slice identifier to a slice mapping system.
Step 203, the second slice identifier of all the allowed roaming access slices is sent to the slice mapping system.
And 204, receiving the mapping slice sent by the slice mapping system, and selecting a slice corresponding to the second slice identifier in the mapping slice as a slice accessed by the roaming user.
Optionally, the method for selecting a network slice further includes: and feeding back a tariff strategy corresponding to the second slice identifier to the slice mapping system according to the received second query request.
Example 3:
as shown in fig. 2, the present embodiment provides a slice mapping system, which includes a first receiving module 31, a first obtaining module 32, a second receiving module 33, a second obtaining module 34, a mapping module 35, and a transmitting module 36.
The first receiving module 31 is configured to receive a first slice identifier of a roaming slice subscribed by a roaming user sent by a home public land mobile network to which the roaming user belongs.
The first obtaining module 32 is connected to the first receiving module 31, and is configured to obtain a service type and a tariff policy corresponding to the first slice identifier according to the first slice identifier.
A second receiving module 33, configured to receive a second slice identifier of all allowed roaming access slices sent by the visited public land mobile network where the roaming user is currently located.
The second obtaining module 34 is connected to the second receiving module 33, and is configured to obtain the service type and the tariff policy corresponding to the second slice identifier according to the second slice identifier.
The mapping module 35 is connected to the first obtaining module 32 and the second obtaining module 34, and is configured to compare service types and tariff policies corresponding to the first slice identifier and the second slice identifier, obtain two slice identifiers with the same service type and highest tariff policy matching degree from the first slice identifier and the second slice identifier, and construct the two slice identifiers as mapped slices.
A transmitting module 36, connected to the mapping module 35, for transmitting the mapping slice to the visited public land mobile network to select a network slice for the roaming user.
Optionally, the slice mapping system further comprises a first storage module and a second storage module. The first storage module is used for receiving and storing a first field rule sent by the home public land mobile network, wherein the first field rule comprises a mapping relation between a field of a home public land mobile network slice and a field meaning, and the first storage module is connected with the first acquisition module. And the second storage module is used for receiving and storing a second field rule sent by the visiting public land mobile network, wherein the second field rule comprises a mapping relation between a field of a slice of the visiting public land mobile network and a field meaning, the field meaning comprises a service type, and the second storage module is connected with the second acquisition module.
Example 4:
the embodiment provides a network slice selecting device which is applied to a visiting public land mobile network and comprises a receiving unit, a sending unit and a selecting unit.
And the receiving unit is used for receiving the registration request sent by the roaming user.
And the sending unit is connected with the receiving unit and is used for sending a request for acquiring the roaming access slice signed by the roaming user to the home public land mobile network according to the registration request so as to enable the home public land mobile network to send the first slice identifier to the slice mapping system.
And the sending unit is also used for sending the second slice identification of all the allowed roaming access slices to the slice mapping system.
And the selection unit is used for receiving the mapping slice sent by the slice mapping system and selecting a slice corresponding to the second slice identifier in the mapping slice as a slice accessed by the roaming user.
Example 5:
as shown in fig. 3, the present embodiment provides a network device, including a memory 51 and a processor 52, where the memory 51 stores a computer program, and the processor 52 is configured to run the computer program to implement the method for selecting a network slice described in embodiment 1.
The memory 51 is connected to the processor 52, the memory 51 may be a flash memory, a read-only memory, or other memories, and the processor 52 may be a central processing unit or a single chip microcomputer.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (8)
1. A method for selecting a network slice, applied to a slice mapping system, comprising:
receiving a first slice identifier of a roaming slice signed by a roaming user, which is sent by a home public land mobile network to which the roaming user belongs;
acquiring a corresponding service type and a tariff strategy according to the first slice identifier;
receiving a second slice identifier of all allowed roaming access slices sent by a visiting public land mobile network where a roaming user is currently located;
acquiring the corresponding service type and tariff strategy according to the second slice identifier;
comparing the service types and the tariff strategies corresponding to the first slice identifier and the second slice identifier, respectively acquiring two slice identifiers with the same service type and highest tariff strategy matching degree from the first slice identifier and the second slice identifier, and constructing the two slice identifiers as mapping slices;
the mapping slice is sent to the visited public land mobile network, to select a network slice for the roaming user,
the obtaining the corresponding service type and tariff strategy according to the first slice identifier includes:
acquiring a service type of a first slice identifier according to a preset first field rule;
sending a first query request to a policy control function body of a home public land mobile network to obtain a tariff policy corresponding to a first slice identifier, wherein the first query request comprises the first slice identifier, the tariff policy comprises a telephone charge quota and a flow quota,
the obtaining the corresponding service type and tariff strategy according to the second slice identifier includes:
acquiring a service type of a second slice identifier according to a preset second field rule;
sending a second query request to a policy control function of the visited public land mobile network to obtain a tariff policy corresponding to a second slice identifier, the second query request including the second slice identifier,
the home public land mobile network and the visited public land mobile network respectively belong to different operators which are different places from each other.
2. The method of selecting a network slice as claimed in claim 1, wherein,
before the receiving the first slice identifier of the roaming slice signed by the roaming user sent by the home public land mobile network to which the roaming user belongs, the method further comprises:
receiving and storing a first field rule sent by a home public land mobile network, wherein the first field rule comprises a mapping relation between a field of a home public land mobile network slice and a field meaning;
and receiving and storing a second field rule sent by the visiting public land mobile network, wherein the second field rule comprises a mapping relation between a field of the visiting public land mobile network slice and a field meaning, and the field meaning comprises a service type.
3. A method for selecting a network slice for use in a visited public land mobile network, comprising:
receiving a registration request sent by a roaming user;
sending a request for acquiring roaming slices signed by roaming users to the home public land mobile network according to the registration request so that the home public land mobile network sends a first slice identifier to a slice mapping system, wherein the slice mapping system is used for acquiring a service type and a tariff strategy corresponding to the home public land mobile network according to the first slice identifier;
transmitting all second slice identifiers allowing roaming access to the slice mapping system, so that the slice mapping system obtains service types and tariff strategies corresponding to the visiting public land mobile network according to the second slice identifiers, compares the service types and the tariff strategies corresponding to the first slice identifiers and the second slice identifiers, respectively obtains two slice identifiers with the same service types and highest tariff strategy matching degree from the first slice identifiers and the second slice identifiers, and constructs the two slice identifiers into mapped slices;
receiving the mapping slice sent by the slice mapping system, selecting the slice corresponding to the second slice identifier in the mapping slice as the slice accessed by the roaming user,
the obtaining the service type and the tariff strategy corresponding to the home public land mobile network according to the first slice identifier includes:
acquiring a service type of a first slice identifier according to a preset first field rule;
sending a first query request to a policy control function body of a home public land mobile network to obtain a tariff policy corresponding to a first slice identifier, wherein the first query request comprises the first slice identifier, the tariff policy comprises a telephone charge quota and a flow quota,
the step of obtaining the service type and the tariff strategy corresponding to the visiting public land mobile network according to the second slice identifier comprises the following steps:
acquiring a service type of a second slice identifier according to a preset second field rule;
sending a second query request to a policy control function of the visited public land mobile network to obtain a tariff policy corresponding to a second slice identifier, the second query request including the second slice identifier,
the home public land mobile network and the visited public land mobile network respectively belong to different operators which are different places from each other.
4. A method of selecting a network slice as claimed in claim 3, further comprising:
feeding back a tariff strategy corresponding to the second slice identifier to the slice mapping system according to the received second query request,
before receiving the registration request sent by the roaming user, the method further comprises:
and sending a second field rule to the slice mapping system, wherein the second field rule comprises a mapping relation between a field of the visited public land mobile network slice and a field meaning, and the field meaning comprises a service type.
5. A slice mapping system is characterized by comprising a first receiving module, a first acquisition module, a second receiving module, a second acquisition module, a mapping module and a sending module,
a first receiving module, configured to receive a first slice identifier of a roaming slice subscribed by a roaming user sent by a home public land mobile network to which the roaming user belongs,
the first acquisition module is connected with the first receiving module and is used for acquiring the corresponding service type and tariff strategy according to the first slice identifier,
a second receiving module for receiving the second slice identification of all the allowed roaming access slices of the roaming user sent by the visiting public land mobile network where the roaming user is currently located,
the second acquisition module is connected with the second receiving module and is used for acquiring the corresponding service type and tariff strategy according to the second slice identifier,
the mapping module is respectively connected with the first acquisition module and the second acquisition module and is used for comparing the service types and the tariff strategies corresponding to the first slice identifier and the second slice identifier, respectively acquiring two slice identifiers with the same service type and highest tariff strategy matching degree from the first slice identifier and the second slice identifier, constructing the two slice identifiers as mapping slices,
a transmitting module connected with the mapping module for transmitting the mapping slice to the visiting public land mobile network to select a network slice for the roaming user,
wherein the first acquisition module is specifically configured to acquire a service type of a first segment identifier according to a preset first field rule, send a first query request to a policy control function body of the home public land mobile network to acquire a tariff policy corresponding to the first segment identifier, where the first query request includes the first segment identifier, the tariff policy includes a telephone charge unit and a traffic unit,
the second acquisition module is specifically configured to acquire a service type of a second slice identifier according to a preset second field rule, send a second query request to a policy control function body of the visited public land mobile network to acquire a tariff policy corresponding to the second slice identifier, where the second query request includes the second slice identifier,
the home public land mobile network and the visited public land mobile network respectively belong to different operators which are different places from each other.
6. The slice mapping system of claim 5, further comprising a first memory module and a second memory module,
a first storage module for receiving and storing a first field rule sent by the home public land mobile network, wherein the first field rule comprises a mapping relationship of fields and field meanings of the home public land mobile network slice,
and the second storage module is used for receiving and storing a second field rule sent by the visiting public land mobile network, wherein the second field rule comprises a mapping relation between a field of the visiting public land mobile network slice and a field meaning, and the field meaning comprises a service type.
7. A network slice selecting device is applied to a visiting public land mobile network and is characterized by comprising a receiving unit, a sending unit and a selecting unit,
a receiving unit for receiving a registration request sent by a roaming user,
a sending unit, connected with the receiving unit, for sending a request for obtaining roaming slices signed by roaming users to the home public land mobile network according to the registration request, so that the home public land mobile network sends a first slice identifier to a slice mapping system, the slice mapping system is used for obtaining service types and tariff strategies corresponding to the home public land mobile network according to the first slice identifier,
the sending unit is further used for sending all second slice identifiers of the allowed roaming access slices to the slice mapping system, so that the slice mapping system obtains the service type and the tariff strategy corresponding to the visiting public land mobile network according to the second slice identifiers, compares the service type and the tariff strategy corresponding to the first slice identifier and the second slice identifier, respectively obtains two slice identifiers with the same service type and highest tariff strategy matching degree from the first slice identifier and the second slice identifier, constructs the two slice identifiers as mapped slices,
a selecting unit for receiving the mapping slice sent by the slice mapping system, selecting the slice corresponding to the second slice identifier in the mapping slice as the slice accessed by the roaming user,
the obtaining the service type and the tariff strategy corresponding to the home public land mobile network according to the first slice identifier includes:
acquiring a service type of a first slice identifier according to a preset first field rule;
sending a first query request to a policy control function body of a home public land mobile network to obtain a tariff policy corresponding to a first slice identifier, wherein the first query request comprises the first slice identifier, the tariff policy comprises a telephone charge quota and a flow quota,
the step of obtaining the service type and the tariff strategy corresponding to the visiting public land mobile network according to the second slice identifier comprises the following steps:
acquiring a service type of a second slice identifier according to a preset second field rule;
sending a second query request to a policy control function of the visited public land mobile network to obtain a tariff policy corresponding to a second slice identifier, the second query request including the second slice identifier,
the home public land mobile network and the visited public land mobile network respectively belong to different operators which are different places from each other.
8. A network device comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the method of any of claims 1-2.
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