CN117241323B - Arrival deceleration method based on PCF of Internet of things - Google Patents

Abstract

The invention provides an arrival deceleration method based on PCF of the Internet of things, and belongs to the technical field of arrival deceleration of the Internet of things. The method comprises the steps of dividing the speed into a plurality of intervals, dividing different speeds into different gears according to requirements in the intervals, configuring an arrival deceleration strategy on the PCF, wherein arrival deceleration strategy data comprise a public data set and a private data set, and the public data set can be directly referenced and the private data set can be configured during configuration. Through the requirements of special clients, data are configured independently, special APNs are configured, strategies are allocated independently, gears, rates and QOS are configured on the strategies, so that instructions are issued to PCF (policy function) for rate control on each Internet of things number independently, and the requirements of different users for different rates under different scenes are met.

Description

Arrival deceleration method based on PCF of Internet of things

Technical Field

The invention relates to the technical field of the quantity-of-arrival deceleration of the Internet of things, in particular to a quantity-of-arrival deceleration method based on PCF of the Internet of things.

Background

With the continuous development of information technology, the internet of things is rapidly developing and applied as an emerging technical field. The internet of things connects various devices, sensors and objects to the internet, so that information exchange and interoperation between the devices are realized. The communication engineering technology plays a vital role in the development and application of the Internet of things. The core network comprises a HSS (Home Subscriber Server ) storing user data, an MME (Mobility Management Entity ) responsible for mobility and session management, a PCRF (Policy and Charging Rules Function ) performing policy and charging functions, and a service capability opening network element SCEF (Service Creation Environment Function ).

The mobile network flow policy management and control system obtains policy information such as excessive network disconnection/recanalization, arrival deceleration/acceleration and the like of users by interfacing with PCRF or PCF (Policy and Charging Function, policy and charging unit), and achieves the policy control functions such as real-time excessive shutdown, automatic recanalization and the like of 4G and 5G users, thereby reducing the pressure of an IT system and a PCRF system.

At present, the business of the Internet of things mainly comprises an intra-provincial industry card, an Internet of things private network, an NB-IOT (Narrow Band Internet of Things, narrow-band Internet) network and a 5G private network, and the method is applicable to the Internet of things private network and the 5G private network.

The terminal types of the internet of things are more, and the terminal type of the internet of things can cover a plurality of industrial applications such as the internet of vehicles, finance, energy, industry, security and protection, wearing, and the like, and the importance degree of each enterprise is different under each service type, and the corresponding application scenes are different, and the requirements of unified scenes on the speed are also different, so that the speed control service needs to be flexibly diversified.

In the traditional Internet of things architecture, the Internet of things card service is single, the control of the speed is only initiated by the user independently, and when the user flow reaches a certain degree, the speed reduction is realized, and no professional speed requirement is provided for special people.

The limitations of the existing internet of things arrival deceleration strategy are as follows:

1. the gear of the speed reduction is too few, the present gear is extended on the basis of 4G, several gear bit rates are provided for customers to select at present, the demand of the gear is wider along with the development of the market and the application of the 5G industry, and the present gear is difficult to meet the demand.

2. The planning of gear is too random, and the planning of gear 1 to gear 150 has no standard specification, and a customer manager is difficult to distinguish the control speed from the naming of the gear when signing up, so that the hidden danger of signing the wrong gear is very easy to exist.

3. The number of strategies for reducing the speed of the existing network configuration is large, when a plurality of enterprises apply for the quantity-reaching speed reduction, the respective strategies are respectively planned, and the purposes of the strategies and the rate control data are repeated, so that the resource waste is caused.

4. The traffic reduction policy data of the existing network occupies more License (authorization certificate), and when the PCF configuration data is fused, the GX port (interface between PCEF equipment and PCRF equipment in the LTE/EPC network) and the N7 port data are required to be simultaneously configured, and each policy configuration requires hundreds of instructions on average, so that a large amount of resources are occupied, and hidden danger of resource permission shortage is easily caused.

Disclosure of Invention

In order to solve the technical problems existing in the prior art, the invention provides a method for reducing speed of the arrival based on PCF of the Internet of things, which actively provides independent service for special clients, and network elements for realizing control rate are realized on PCF as the traditional speed reduction control, but the realization modes are different, the special APN (access Point Name) is configured by independent configuration data according to the requirements of the special clients, policies are independently allocated, gears, rates and QOS (Quality of Service) are configured on policies, different levels of gears are issued to different levels of IOT cards of the same company by a client manager front desk, and each IOT number is independently issued to command to PCF for rate control, thereby solving the requirements of different users for adopting different rates according to different scenes, and the method comprises the following steps:

s1, dividing the speed into a plurality of intervals;

s2, dividing gears in a plurality of intervals, and dividing different speeds into different gears according to requirements;

s3, configuring reaching-quantity speed-down strategy data on the PCF, wherein the reaching-quantity speed-down strategy data comprises a public data set and a private data set; the common data set includes data of a repetitive function; the special data set comprises data needing to be configured independently;

s4, issuing a speed control gear in the reaching quantity speed-down strategy to the PCF;

s5, the PCF judges the number and the speed control gear, and if the number and the speed control gear do not accord with a preset strategy, the speed control is not carried out on the number;

s6, the PCF determines a gear of rate control according to the state value of the subscription strategy;

s7, the PCF issues uplink and downlink strategy control to the AMF;

s8, the AMF performs policy control on the internet of things card.

Further, the partition in S1 is specifically divided into 5 intervals according to the demand rate, which is specifically as follows:

a first interval: 0Kbps, forbidding the user to surf the internet;

the second interval: 0Kbps to 1Mbps;

third interval: 1Mbps to 10Mbps;

fourth interval: 10Mbps to 100Mbps;

fifth interval: 100Mbps to 1Gbps.

Further, the method for dividing the gear in the S2 is as follows:

a first interval: gear positions are not divided;

the second interval: the gear is divided into 10 gears, the gear is 1 to 10, and one gear is added every 100 kbps;

third interval: the gear is divided into 10 gears, the gear is 11-20, and one gear is added every 1Mbps;

fourth interval: 20 gears are divided, and each 5Mbps is divided into one gear;

fifth interval: 10 gears, one gear every 100Mbps.

Further, the method further comprises the steps of dividing the QCI into three gears, namely QCI9, QCI8 and QCI6; the QCI9 is accelerated at a default rate, and the QCI8 is dedicated for providing accelerated crowd-specific fluent acceleration; QCI6 is a very fast acceleration for emergency acceleration of accidents.

Further, the gear is named as a 6-bit number, the first bit is 1 or 2, the value 1 is the gear with the speed controlled below 1Mbps, and the value 2 is the gear with the speed controlled between 1Mbps and 1 Gbps; the second bit is the QCI requirement; the third bit is whether the month is reset or not, if the value is 1, the month is reset automatically, otherwise, the month is not reset automatically; the last three bits are shorthand for the rate value.

Further, the QCI gear and the rate requirement gear can be freely combined.

Further, the method for configuring the public data set in S3 is as follows:

s311, configuring a strategy condition group, wherein the strategy condition group is a combination of a plurality of conditions, and comprises names of the condition group, and relationships and description settings among all conditions in the condition group;

s312, configuring policy conditions, wherein the policy conditions are assigned object attributes, when a user accesses a network, PCRF/PCF can match user basic information, subscription information, session information, system information and account information with policy configuration conditions on the PCRF/PCF according to services subscribed by the user, and when the matching is successful, the next step is performed; if the matching is unsuccessful, the rate control is not carried out on the number;

s313, configuring a strategy action group, wherein the strategy action group comprises bandwidth control, charging control, message notification and redirection;

s314, configuring policy rules, wherein the policy rules are parameter sets of service policy control and charging policy control, and comprise a condition group, an action group, a service flow, a rate and message notification.

Further, the method for configuring the dedicated data set in S3 is as follows:

s321, configuring strategy basic information, wherein the strategy basic information comprises a strategy, a quota and a roaming area;

s322, configuring a strategy, wherein the strategy is a combination of a plurality of triggers and rules, and comprises a strategy name, a strategy type and strategy description information.

Further, the method for determining the number and the deceleration control policy by the PCF in S5 specifically includes:

s51, judging whether the number is registered, if so, performing the next step, and if not, not performing rate control on the number;

s52, judging whether the number has a signed deceleration strategy, if so, carrying out S6, and if not, not carrying out rate control on the number.

Further, between S6 and S7, further includes:

s61, judging whether the special data service of the strategy and the configuration of the strategy are correct; if yes, the next step is carried out, and if not, the rate control is not carried out on the number;

s62, searching corresponding rates on the public data according to the strategy of the private data, if yes, carrying out S7, and if not, not carrying out rate control on the numbers.

Compared with the prior art, the invention has the following beneficial effects:

1. the gear is divided according to the speed, so that the gear is more diversified in gear reduction, and the market demand is met;

2. the gear is standardized and named, so that the gear is more visual and easy to understand;

3. the data of the arrival deceleration strategy is divided into a public data set and a private data set, so that the public data set can be directly applied when the arrival deceleration strategy is configured, and the private data set is added, thereby reducing the repeatability of the data and reducing the utilization rate of a system License.

Drawings

FIG. 1 is a method flow diagram of one embodiment of the present invention;

FIG. 2 is a diagram of a comparison of a conventional arrival deceleration policy data configuration with an arrival deceleration policy data configuration according to one embodiment of the invention;

fig. 3 is a schematic diagram of network elements involved in main in one embodiment of the present invention; in the figure: SMSF-short message service network element; NRF-network warehousing function; HSS-home subscriber server; PCRF-policy and charging rules function unit; MME-mobility management entity; DNS-domain name system; SPWG-requirement work group; NSSF-network slice selection functionality; AMF-access and mobility management functions; NR-network warehousing; UDR-unified data warehouse function; UDM/AUSF-unified data management function/authentication service function; PCRF/PCR-policy and charging rule function unit/policy and charging unit; SMF-session management function; PGW-C is PDN gateway control plane; PGW-U is PDN gateway user plane; UPF-universal generating function; CHF-communication processing facilities; N2/N3/N7/N9 and the like are interfaces; S5-C is an S5 interface control surface; S5-U is S5 interface user plane.

Fig. 4 is a line drawing of the present network License usage rate for one embodiment of the present invention.

FIG. 5 (A) is a graph of measured signaling for PCF rate control over the N7 port without speed limit;

fig. 5 (B) is a signaling diagram of the PCF through N7 port rate control measured at a limited speed of 1 Mbps.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4, and fig. 5 (a) and 5 (B) in the embodiments of the present invention.

Fig. 1 is a flowchart of one embodiment of a method for speed reduction of a target volume based on PCF of internet of things according to the present invention. As shown in fig. 1, the method of this embodiment includes:

s1, dividing the speed into a plurality of intervals;

s2, dividing gears in a plurality of intervals, and dividing different speeds into different gears according to requirements;

s3, configuring reaching-quantity speed-down strategy data on the PCF, wherein the reaching-quantity speed-down strategy data comprises a public data set and a private data set; the common data set includes data of a repetitive function; the special data set comprises data needing to be configured independently;

s4, issuing a speed control gear in the reaching quantity speed-down strategy to the PCF;

s5, the PCF judges the number and the speed control gear, if not, the PCF does not judge the speed;

s6, the PCF determines a gear of rate control according to the state value of the subscription strategy;

s7, issuing uplink and downlink strategy control to AMF;

s8, the AMF performs policy control on the internet of things card.

The speed is divided into a plurality of intervals, and different speeds in the divided intervals are divided into different gears, so that the speed limiting speed can be directly referenced through the gears when the speed limiting speed is used, and the speed control requirement of 4G/5G is met.

Meanwhile, only one policy needs to be configured on the PCRF/PCF, and on the configuration of the policy, public and special data configuration mode configuration data is adopted, wherein a public configuration part comprises data of a repetitive function, such as fixed data of 4G/5G conditions, 4G/5G condition groups, 4G/5G action groups, 4G/5G rules, 4G/5G rule groups and the like; the special configuration part comprises data needing to be configured independently, such as data needing to be changed, such as 4G/5G business, 4G/5G strategy rule and the like. Policy data is divided into a fixed public configuration section and a modified private configuration section. The data updating in the later stage only needs to add the gear data of a new special configuration part on the basis of a public configuration part, and the public configuration part is directly referenced to the public parameters needed by the policy gear, so that the occupation of policy permission is greatly reduced, the public configuration part is used as a library, the data of the library is basically fixed, the public configuration part only needs to be configured once, the subsequent data updating is added or modified on the change data, and the hidden danger of the change triggering of the data is reduced.

The invention manages the data set without great variation basically, greatly reduces risks caused by manual operation and cutting and updating, and directly refers to the parameters such as policy rules, business and the like of the follow-up policy to the rule names in the set.

As shown in table 1 and fig. 4, the present invention splits the down policy data into public and private from 6 months, and after the newly added up-to-date down policy references the public part data, it can be seen that the current network license utilization rate is significantly slowed down.

Table 1.5G action group quantity statistics table

Month of month	1 month	2 months of	3 months of	4 months of	5 months of	6 months of	7 months of	8 months of
									5G action group (strip)	6230	7003	7847	8297	9018	9795	9946	10045

In a preferred embodiment, the method of the partition in S1 is partitioning according to a demand rate, specifically:

a first interval: 0Kbps; the user is forbidden to surf the internet;

the second interval: a rate of 1Mbps or less;

third interval: 1Mbps to 10Mbps;

fourth interval: 10Mbps to 100Mbps;

fifth interval: 100Mbps to 1Gbps.

By using the interval dividing method, the current common demand rate can be divided into 5 intervals according to different rate intervals, the rate contained in each interval is different, and different intervals can be selected according to the demand when in use.

In a preferred embodiment, the speed intervals divided according to the method can be divided into gears in different intervals according to the requirements of industry and the common speed control.

The specific gear dividing method in S2 is as follows:

a first interval: the gear positions are not divided up,

the second interval: the gear is divided into 10 gears, the gear is 1 to 10, one gear is added every 100kbps,

third interval: 10 gears, 11-20 gears, one gear is added every 1Mbps,

fourth interval: 20 gears, 21-40 gears, one gear is added every 5Mbps,

fifth interval: the gear is divided into 10 gears, and one gear is added to each 100Mbps of the gears 41-50.

That is, the range of the rate in each section is divided into ten parts, one gear is added every time one part is added, kbps needs to be subdivided because of more gears which need to be classified under 1M, one gear is added every 100Kbps, and the rate above 1M can be classified according to Mbps.

In a preferred embodiment, in consideration of the fact that the QCI is specific to the user, in the special case of congestion and the like, priority access is performed to the specific user preferentially, the QCI can be divided into three gears of QCI9, QCI8 and QCI6, the QCI9 is accelerated at a default rate, the QCI8 is the fluent acceleration for the crowd providing the acceleration service, and the QCI6 is the extremely fast acceleration provided by the special case emergency and the special user.

The QCI is subjected to gear division, so that when special conditions such as congestion occur, users signing the requirements of the useful network can access the network preferentially.

Further, the gear is named as a 6-bit number, the first bit is 1 or 2, the value 1 represents the gear with the speed controlled below 1M, and the value 2 represents the gear with the speed controlled between 1Mbps and 1 Gbps; the second bit is the QCI requirement, e.g., 9, 8 or 6; the third bit is whether the month is reset or not, the month is reset automatically when the value is 1, and the month is not reset automatically when the value is 2; the last three bits are shorthand for the speed value, specifically as follows:

1. if the speed limit is below 1M, i.e. the first digit of the gear name is 1, then the last three digits are named according to the speed, e.g. table 2,

TABLE 2 Gear naming schematic Table with speed limit below 1M

2. If the speed limit is between 1Mbps and 1Gbps, namely the second position of the gear name is 2, the naming rule of the last three positions of the gear is shown in table 3.

TABLE 3 Gear naming schematic Table for speed limit between 1Mbps and 1Gbps

Gear value	Uplink rate	Downlink rate	Gear value	Uplink rate	Downlink rate
						2XX001	1Mbps	1Mbps	2XX050	50Mbps	50Mbps
2XX002	2Mbps	2Mbps	2XX100	100Mbps	100Mbps
						2XX005	5Mbps	5Mbps	2XX200	200Mbps	200Mbps
2XX008	8Mbps	8Mbps	2XX500	500Mbps	500Mbps
						2XX010	10Mbps	10Mbps	2XX600	600Mbps	600Mbps
2XX020	20Mbps	20Mbps	2XX800	800Mbps	800Mbps

Specifically, when the gear speed limit is 1Gbps, the gear value is 2XX000.

In a preferred embodiment, for use convenience, the QCI gear and the rate requirement gear can be freely combined, for example, the user wants to turn on the internet of things card, but for special reasons, wants to control the rate at 5M common QOS, only the user needs to sign up for the rate control policy, the interval selects the second interval, the gear selects 15, that is, the up/down speed 5mbps, qci=9, that is, the default rate accelerates, the user can directly issue to the PCF through the N7 port according to the values of the gear and the QCI, and the PCF directly performs the rate limiting process on the user's card according to the gear bit rate predetermined by the policy, without going through the SMF (Session Management Function ).

In a preferred embodiment, the method for configuring the public data in S3 is:

s311, configuring a strategy condition group, wherein the strategy condition group is a combination of a plurality of conditions and comprises the names of the condition groups, the relation and description among all the conditions in the condition groups and other parameters;

s312, configuring policy conditions, wherein the policy conditions are assigned object attributes, when a user accesses a network, PCRF/PCF can match contents such as user basic information, subscription information, session information, system information, account information and the like with policy configuration conditions on the PCRF/PCF according to services subscribed by the user, and after the matching is successful, the next step is carried out; if the matching is unsuccessful, the rate control is not carried out on the number;

s313, configuring a strategy action group, wherein the strategy action group comprises the combination of actions such as bandwidth control, charging control, message notification, redirection and the like;

s314, configuring policy rules, wherein the policy rules are parameter sets of service policy control and charging policy control, and include a condition group (a combination of conditions such as an object, a quota, an account, a roaming area, a service area, etc.), an action group (a combination of actions such as bandwidth control, charging control, message notification and redirection), a service flow, a rate, message notification, etc., and when a user meets a certain trigger condition, all triggered rules issue corresponding operations.

The data of the 4G/5G condition, the 4G/5G condition group, the 4G/5G action group, the 4G/5G rule and the 4G/5G rule group are used as fixed parameters for management, and the data can be commonly referred by different strategies, so that the repeated configuration of the data of the current network is greatly reduced.

In a preferred embodiment, the method for configuring the dedicated data in S3 is as follows:

s321, configuring strategy basic information: the policy basic information comprises a policy, a quota and a roaming area;

s322, configuration strategy: the policy is a combination of a plurality of triggers and rules, and comprises parameters such as the name of the policy, the type of the policy, descriptive information of the policy and the like.

The 4G/5G service, the 4G/5G strategy and the 4G/5G strategy rules are used as change data, the subsequent capacity expansion can be added according to the characteristics of the strategy, and the rules with fixed parameters are directly referenced after the subsequent capacity expansion is added. The resources of the existing network are greatly saved, and the strategy data is tidier and more objective.

Further, the method for determining the number and the deceleration control strategy by the PCF in S5 is as follows:

s51, judging whether the number is registered, if so, performing the next step, and if not, not performing rate control on the number;

s52, judging whether the number has a signed deceleration strategy, if so, carrying out S5, and if not, not carrying out rate control on the number.

Further, S6 further includes:

s61, judging whether the special data service of the strategy and the configuration of the strategy are correct, if so, carrying out the next step, and if not, not carrying out rate control on the number;

s62, searching corresponding rates on the public data according to the strategy of the private data, if yes, carrying out S7, and if not, not carrying out rate control on the numbers.

The following are tests of the invention:

test one:

and configuring an arrival deceleration strategy on the PCF in advance, completing configuration of gears and the data network, and testing the strategy signed by the Internet of things card. When no policy is signed, the rate of test number delivery is controlled to 100Mbps. The reason is that under the condition that the 4G/5G network exists, the PCRF/PCF does not limit the number, but the number is set according to the PGW (PDN GateWay) request rate, as shown in fig. 5 (A), the rate of the test number is issued to the PCRF/PCF through GX/N7 according to the PGW, the maximum uploading rate and the maximum downloading rate of the PGW application CCA (credit control request) are 100000000bps according to the signaling requirement of the PGW, and after the PCRF/PCF receives the signaling of the CCA (credit control request), the PCRF issues a CCR (credit control response) to answer the PGW and issues the maximum uploading rate and the maximum downloading rate of 100000000bps, and the test terminal verifies that the website can be logged in normally without being influenced.

And II, testing:

when we modify the test number to 190100 on SPR (Subscription Profile Repository, subscription data repository), install the design of the present invention, control the rate on PCRF/PCF to 1Mbps, re-track the number grab packet after restarting the handset, as shown in fig. 5 (B), it can be seen that the test number is on RAR signaling, PCRF/PCF requests the PGW that the maximum upload rate and the maximum download rate of the requested number limit is 1024000bps, the request is successful, PGW replies CCR (credit control response) signaling through GX port, and the reply is SUCCESS rate limiting SUCCESS.

And (3) testing:

the user keeps online, and the service using state of the user is modified to be the speed limit gear of 0Kbps through tent triggering. When the PCF judges that the service use state of the user is changed, the policy plan is triggered again, and the uplink and downlink rates of the user are modified to 0Kbps by issuing session policy control-message updating. The download rate is also verified to be 0Kbps, i.e., the user cannot log into the website normally.

And (4) testing:

in order to check whether the rate control of the 5G service is successful or not, the signaling packet grabbing analysis of the N7 port is tested, the setting gear of the test card of the Internet of things is 190001, namely the issued rate is 1Kbps, the uplink rate and the downlink rate can be controlled at 1Kbps according to the packet grabbing condition of the N7 port,

according to the results of the first test, the second test, the third test and the fourth test, the invention can well limit the speed under the control rate after the reaching amount speed reducing strategy is configured on the PCF.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (8)

1. The method for reducing the speed of the arrival based on the PCF of the Internet of things is characterized by comprising the following steps of:

s1, dividing the speed into a plurality of intervals;

s2, dividing gears in a plurality of intervals, and dividing different speeds into different gears according to requirements;

s3, configuring reaching-quantity speed-down strategy data on the PCF, wherein the reaching-quantity speed-down strategy data comprises a public data set and a private data set; the common data set includes data of a repetitive function; the special data set comprises data needing to be configured independently;

the method for configuring the public data set comprises the following steps:

s311, configuring a strategy condition group, wherein the strategy condition group is a combination of a plurality of conditions, and comprises names of the condition group, and relationships and description settings among all conditions in the condition group;

s312, configuring policy conditions, wherein the policy conditions are assigned object attributes, when a user accesses a network, PCRF/PCF can match user basic information, subscription information, session information, system information and account information with policy configuration conditions on the PCRF/PCF according to services subscribed by the user, and when the matching is successful, the next step is performed; if the matching is unsuccessful, the rate control is not carried out on the number;

s313, configuring a strategy action group, wherein the strategy action group comprises bandwidth control, charging control, message notification and redirection;

s314, configuring policy rules, wherein the policy rules are parameter sets of service policy control and charging policy control, and comprise a condition group, an action group, a service flow, a rate and message notification;

the method for configuring the special data set comprises the following steps:

s321, configuring strategy basic information, wherein the strategy basic information comprises a strategy, a quota and a roaming area;

s322, configuring a strategy, wherein the strategy is a combination of a plurality of triggers and rules, and comprises a strategy name, a strategy type and strategy description information;

s4, issuing a speed control gear in the reaching quantity speed-down strategy to the PCF;

s5, the PCF judges the number and the speed control gear, and if the number and the speed control gear do not accord with a preset strategy, the speed control is not carried out on the number;

s6, the PCF determines a gear of rate control according to the state value of the subscription strategy;

s7, the PCF issues uplink and downlink strategy control to the AMF;

s8, the AMF performs policy control on the internet of things card.

2. The method for reducing the speed of the arrival based on the PCF of the Internet of things according to claim 1, wherein in S1, the interval dividing method is to divide the speed into 5 intervals according to the requirement of the user, and the method is specifically as follows:

a first interval: 0Kbps, forbidding the user to surf the internet;

the second interval: 0Kbps to 1Mbps;

third interval: 1Mbps to 10Mbps;

fourth interval: 10Mbps to 100Mbps; fifth interval: 100Mbps to 1Gbps.

3. The method for reducing the speed of the arrival based on the PCF of the Internet of things according to claim 2, wherein the method for dividing the gear in S2 is as follows:

a first interval: gear positions are not divided;

the second interval: the gear is divided into 10 gears, the gear is 1 to 10, and one gear is added every 100 kbps;

third interval: the gear is divided into 10 gears, the gear is 11-20, and one gear is added every 1Mbps;

fourth interval: 20 gears are divided, and each 5Mbps is divided into one gear;

fifth interval: 10 gears, one gear every 100Mbps.

4. The method for reducing the speed of the arrival based on the PCF of the Internet of things according to claim 3, further comprising dividing the QCI into three gears, namely QCI9, QCI8 and QCI6; the QCI9 is accelerated at a default rate, and the QCI8 is dedicated for providing accelerated crowd-specific fluent acceleration; QCI6 is a very fast acceleration for emergency acceleration of accidents.

5. The method for reducing the arrival amount based on the PCF of the Internet of things according to claim 4, wherein the gear is named as a 6-bit number, the first bit is 1 or 2, the 1 value is a gear with the rate controlled below 1Mbps, and the 2 value is a gear with the rate controlled between 1Mbps and 1 Gbps; the second bit is the QCI requirement; the third bit is whether the month is reset or not, if the value is 1, the month is reset automatically, otherwise, the month is not reset automatically; the last three bits are shorthand for the rate value.

6. The method for decelerating the arrival amount based on the PCF of the internet of things as recited in claim 5, wherein the QCI gear and the rate demand gear are freely combined.

7. The method for reducing the speed of the arrival based on the PCF of the Internet of things according to claim 1, wherein the method for judging the number and the speed reducing control strategy by the PCF in S5 is specifically as follows:

s51, judging whether the number is registered, if so, performing the next step, and if not, not performing rate control on the number;

s52, judging whether the number has a signed deceleration strategy, if so, carrying out S6, and if not, not carrying out rate control on the number.

8. The method for reducing speed of arrival based on PCF of internet of things of claim 1, wherein between S6 and S7 further comprises:

s61, judging whether the special data service of the strategy and the configuration of the strategy are correct; if yes, the next step is carried out, and if not, the rate control is not carried out on the number;

s62, searching corresponding rates on public data according to a strategy of private data, if the corresponding rates can be found, performing S7, and if the corresponding rates cannot be found, not performing rate control on the numbers.