CN104168276B - The method of adjustment and device of a kind of filter - Google Patents

Abstract

The invention discloses a filter adjustment method and device, relates to the technical field of communication, and is used for solving the problem of low matching efficiency of business flow templates. The specific embodiment of the present invention includes: when the user equipment uses multiple communication services for a long period of time, after the service flow template manager obtains the current priority of the successfully matched filter, it judges whether the current priority is in the First-level and second-level priority windows, and when located in the second-level priority window, adjust the priority of the filter at the specific position of the second-level priority window. The technical solution provided by the invention is mainly applied in the process of business flow template matching.

Description

A filter adjustment method and device

technical field

The invention relates to the field of communication technology, in particular to a method and device for adjusting a filter.

Background technique

At present, users have put forward higher service quality requirements for multimedia services such as files and videos. In order to meet the quality of service requirements of users for these multimedia services, EPS (Evolved Packet System, Evolved Packet System) bearer and service flow template technologies are introduced into the LTE (Long Term Evolution, Long Term Evolution) system. Among them, the EPS bearer is a logical circuit between UE (User Equipment, user equipment) and PDN_GW (Packet Data Network Gateway, packet data gateway), and the service flow template is used to distinguish packet data with different service qualities between the user equipment and the network. A service flow template contains multiple filters, and each filter corresponds to an EPS bearer.

Business flow templates need to perform business flow template matching when distinguishing packet data with different service qualities. Service flow template matching refers to matching data with different service qualities After successful matching, the data is sent to the corresponding EPS bearer, and then radio resources are allocated for the data, and the data is sent to the user equipment. The matching operation of the service flow template is performed in descending order of the priority of the filter in the service flow template, so the priority of the filter directly affects the matching efficiency of the service flow template.

In the existing business flow template matching process, when the filter in the business flow template is successfully matched, the priority of the filter is adjusted to the highest, and the priority of the filter that was originally higher than the priority of the filter is all Down one level.

In the matching process of specific service flow templates, due to the characteristics of the communication service data itself or the frequency of users' access requests to these data, the communication service data has different requirements on the corresponding filter priority. In the process of users performing communication services, there will be a variety of communication services, and the frequency of use of each communication service by users is different, so there must be one or several communication services commonly used by users, as well as the frequency of use of some users. Very low communication traffic, and each communication traffic may contain one or several types of communication data. The inventors have found that when a user performs communication services and performs business flow template matching for communication service data, if the above-mentioned existing filter priority adjustment method is used, the communication service data must be frequently modified due to frequent switching. The priority of the filter results in low efficiency of business flow template matching. Therefore, there is an urgent need for a filter adjustment method to improve the matching efficiency of business flow templates.

Contents of the invention

Embodiments of the present invention provide a method and device for adjusting filters, which can reduce the frequency of switching filters during the matching process of service flow templates, thereby improving the matching efficiency of service flow templates.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

A method for adjusting a filter, comprising:

When the filter matches successfully, obtain the current priority of the filter;

When the current priority is not in the first-level priority window, and the current priority is in the second-level priority window and is not the highest priority in the second-level priority window, set the current priority of the filter to replacing priority with a filter one level above said current priority;

When the current priority is not located in the first-level priority window and not in the second-level priority window, setting the current priority of the filter as the lowest priority in the second-level priority window, and Lower the priority of the filter that was originally at the lowest priority in the second-level priority window by one level, and filter the filters outside the first-level priority window and the second-level priority window that are higher than the current priority The priority of the device is lowered by one level;

Wherein, the first-level priority window and the second-level priority window are natural number sequences representing filter priorities, and the priority of the filter in the first-level priority window is higher than that of the filter in the second-level priority window priority of the controller, and the lowest priority in the first-level priority window is one level higher than the highest priority in the second-level priority window.

A filter adjustment device, comprising:

An acquisition unit, configured to acquire the current priority of the filter when the filter is successfully matched;

A priority adjustment unit, configured to be used when the current priority acquired by the acquisition unit is not in the first-level priority window, and the current priority is in the second-level priority window and is not the highest priority in the second-level priority window , replacing the current priority of the filter with a filter that is one level higher than the current priority;

The priority adjustment unit is further configured to set the current priority of the filter to Set as the lowest priority in the secondary priority window, and lower the priority of the filter that was originally at the lowest priority in the secondary priority window by one level, and set the priority of the primary priority window and all Priorities of filters outside the secondary priority window and higher than the current priority are all lowered by one level;

Wherein, the first-level priority window and the second-level priority window are natural number sequences representing filter priorities, and the priority of the filter in the first-level priority window is higher than that of the filter in the second-level priority window , and the lowest priority in the first-level priority window is one level higher than the highest priority in the second-level priority window

In the filter adjustment method and device provided by the embodiments of the present invention, when the user equipment uses multiple communication services for a long period of time, after the service flow template manager obtains the current priority of the successfully matched filter, By judging whether the current priority is located in the first-level priority window and the second-level priority window, and when it is located in the second-level priority window, the priority of the filter is adjusted at the specific position of the second-level priority window, so that the filter can be judged The current priority is adjusted so that when the user equipment frequently switches communication services, the service flow template manager does not need to set the priority of the filter to the top after each successful match, so that the priority of the filter does not need to be switched frequently. Further, the switching frequency of the filter is reduced, and the matching efficiency of the service flow template is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a flow chart of a method for filter adjustment provided by an embodiment of the present invention;

Fig. 2 is a flow chart of a filter adjustment method provided by another embodiment of the present invention;

FIG. 3 is a flow chart of another method for filter adjustment provided by another embodiment of the present invention;

Fig. 4 is a schematic composition diagram of a filter adjustment device provided by an embodiment of the present invention;

Fig. 5 is a schematic composition diagram of another filter adjustment device provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention provides a filter adjustment method, which is used to improve the matching efficiency of the service flow template when the user equipment uses multiple communication services for a long time, as shown in Figure 1, the method include:

101. When the filter is successfully matched, the service flow template manager acquires the current priority of the filter.

Wherein, the priority of the successfully matched filter is the same as the priority of the filter before matching.

It is worth noting that the successful filter matching means that the matching information of the filter is consistent with the field to be matched of the data packet. The matching information of the filter and the fields to be matched in the data packet will be described in 301 and 302 below.

102. When the current priority is not in the first-level priority window, and the current priority is in the second-level priority window and is not the highest priority in the second-level priority window, the business flow template manager compares the current priority of the filter with the Priority overrides for filters one level above this current priority.

Among them, the first-level priority window and the second-level priority window are natural number sequences representing the filter priority, and the priority of the filter in the first-level priority window is higher than that of the filter in the second-level priority window, and the first-level The lowest priority in the priority window is one level higher than the highest priority in the secondary priority window.

For example, the priority of the filter can be set as a sequence from 1 to n, 1 is the highest priority, n is a natural number, and 1 to 9 are the first-level priority windows, 10 to x are the second-level priority windows, and where x is less than or equal to n. Of course, sorting can also be performed inside the first-level priority window and the second-level priority window. For example, the first-level priority window is 1 to n1, and this n1 is equivalent to 9 in the above example, and the second-level priority window can be 1 to n2. And in combination with the above example, 1 is equivalent to the above 10, and n2 is equivalent to the above x.

103. When the current priority is not in the first-level priority window and not in the second-level priority window, the business flow template manager sets the current priority of the filter as the lowest priority in the second-level priority window, and sets the second priority The priority of the filter that was originally at the lowest priority in the priority priority window is lowered by one level, and the priority of the filter outside the first level priority window and the second level priority window that is higher than the current priority is lowered by one level.

It is worth noting that in the existing technical solutions provided, when the filter is successfully matched, the priority of the filter will be set to the top, so that if the user uses multiple communication services for a long period of time, he must frequently Switch the priority of the filter, and in the technical solution provided by the present invention, two priority division ranges, the first-level priority window and the second-level priority window, are defined. After the filter is successfully matched, the current priority of the filter The priority level of the filter is compared with the priority levels in these two priority windows, and the priority level of the filter will only be adjusted under the conditions described above, and when the user uses several communication services for a long time, when these communication services After the priority of the service data is adjusted once, when the same communication service data is received later, the priority of the filter will not need to be adjusted again to a large extent, thus greatly reducing the switching frequency of the filter .

The embodiment of the present invention provides a filter adjustment method. When the user equipment uses multiple communication services for a long period of time, the service flow template manager obtains the current priority of the successfully matched filter and determines the Whether the current priority is located in the first-level and second-level priority windows, and when it is in the second-level priority window, adjust the priority of the filter at the specific position of the second-level priority window, so that the current priority of the filter can be judged Adjust the priority of the filter so that when the user equipment frequently switches communication services, the service flow template manager does not need to set the priority of the filter to the top after each successful match, so that it does not need to switch the priority of the filter frequently, thereby reducing the The switching frequency of the filter is improved, and the matching efficiency of the service flow template is improved.

Another embodiment of the present invention provides a filter adjustment method, as shown in Figure 2, the method includes:

In combination with the above-mentioned method flow shown in FIG. 1 , in this implementation, the adjustment of the current priority of the successfully matched filter in the actual matching process is more completely described. After the above 101 is executed, It also includes performing the following step 201 or 202 .

201. When the current priority is within the first-level priority window, the service flow template manager keeps the priority of the filter as the current priority.

202. When the current priority is located in the second-level priority window and is the highest priority in the second-level priority window, the service flow template manager keeps the priority of the filter as the current priority.

It is worth noting that the 201, 202 and the above-mentioned 102, 103 are four parallel execution processes, which are used to complete the adjustment of the current priority of the filter.

In combination with the above description of steps 201 and 202, in the actual adjustment process of the filter, since there are one or several communication services that are frequently used by users, or services that users have been using for a period of time, it is necessary to enable The priority of the filter matching the communication service data corresponding to these communication services should be in a high priority state. In this embodiment, when the priority of the filter belongs to the highest level of the first-level priority window or the second-level priority window , it means that the communication service data corresponding to the filter is the service data that the user uses extremely frequently within a period of time, so the priority of these filters remains in a high priority state during the period of time, wherein the period of time can be Is the survival cycle of the communication business.

In addition, it is worth noting that, since one or several communication services have been used by users for a period of time, but after the use time exceeds this period, users may no longer use or no longer frequently use the above-mentioned services. Correspondingly, the priority of the filter corresponding to the communication service data of these communication services does not need to be in a high priority state all the time. For this practical application situation, the size of the first-level priority window is set to be adjustable in the embodiment of the present invention.

A further way to adjust the size of the first-level priority window may be as follows: within a preset time period, one or several values in the first-level priority window are the same as the values obtained during the preset time period. The priority of the successfully matched filter does not correspond, or the corresponding ratio between the one or several values and the priority of the successfully matched filter is lower than the preset value, then in the first-level priority window, the one or Several numerical values are deleted, and rearranged according to the order of the remaining numerical values in the first-level priority window from small to large, and after the numerical values are adjusted, the priority of the filter that matches successfully corresponding to the numerical values is modified, so that The priority of the modified filter corresponds to the rearranged value, or, after the one or several values are deleted in the first-level priority window, the remaining values and the filter that successfully match are prioritized According to the corresponding success rate of the corresponding success rate, rearrange the remaining values according to the order of the corresponding success rate from high to low, and modify the priority of the filter that successfully matches, so that the modified priority of the filter that successfully matches is the reordered value.

Although the method for adjusting the size of the first-level priority window is introduced above, in the actual application process, due to the user's habit of using communication services, the size of the first-level priority window can be determined through statistics, and the size is the largest in a long period of time. Stable, so the timeliness of the first-level priority window adjustment is not strong, that is to say, the size of the first-level priority window can be considered fixed, so it is not necessary to frequently modify the priority of the filter with a high matching success rate.

Another embodiment of the present invention provides a method for adjusting a filter. Combining the above-mentioned method flow as shown in FIG. 1 and FIG. , the process includes:

301. The service flow template manager acquires the field to be matched from the received data packet.

Wherein, the field to be matched is the characteristic information of the data packet, and the difference of the data packet is reflected by the characteristic information of each data packet. For example, the characteristic information of an IPv4 data packet includes: TOS (Type of Service, service type), protocol number (Protocol), SPI (Security Payload Index, security load index), source address (Source Address), destination address (Destination Address) ). The characteristic information of the IPv6 data packet includes: message transmission class (TrafficClass), flow label (Flow Label), next header address (Next Header), SPI (Security PayloadIndex, security load index), source address (Source Address), Destination Address. It can be seen from this that the characteristic information included in the two data packets is different. This embodiment only lists the characteristic information of two kinds of data packets, and does not describe the characteristic information included in other types of data packets here.

302. The service flow template manager matches the received data packet with the filter according to the field to be matched and the matching information of the filter.

Wherein, the matching information of the filter is the specific value of the matching field of the filter, and also the characteristic value of the filter, which is the essence of a filter different from other filters. Combined with the description of the fields to be matched in the data packet in 301 above, a data packet has multiple fields to be matched, and each field needs to be consistent if the filter matches the data packet successfully, so the matching information of each filter also contains multiple values .

303. When the field to be matched is the same as the matching information of the filter, determine that the filter is matched successfully.

It is worth noting that there is still a situation in which the filter matching fails in the specific implementation process of this embodiment. When the data packet fails to match the filter, according to the field to be matched, the data packet is matched with the rest of the filters containing the matching information according to These remaining filters are matched against the data packet in descending order of priority until the data packet is successfully matched with one of the remaining filters.

In addition, it is worth noting that during the implementation of the solution, there may be a situation where the data packet does not match the other filters that contain matching information. In this case, because there may be some Filter, that is, a blank filter, when none of the non-blank filters can successfully match the data packet, add the field to be matched for the received and failed data packet to the blank filter, that is, the data The to-be-matched field of the packet is used as the matching information of the blank filter, so that the data packet is matched with the filter and the filter matches successfully.

Of course, during the matching process, if the number of data packets is more than the number of filters, at this time, the data packets cannot be matched with the filters, and the data packets are discarded.

In the implementation provided in this embodiment, by executing the process shown in Figure 3 above, the matching of the data packet and the filter is realized, so that when the filter is successfully matched, the current priority of the successfully matched filter is obtained .

Combining with the above method flow as shown in FIG. 1 to FIG. 3 , the uplink execution flow is described. In this scenario, the service flow template manager can be set in the UE. Correspondingly, the downlink execution flow is similar to the above-mentioned uplink execution flow, and will not be described repeatedly in this embodiment, but in the downlink execution flow, the service flow template manager may be set in the PDN-GW.

Another embodiment of the present invention provides a device for adjusting a filter. As shown in FIG. 4 , the device includes: an acquisition unit 41 and a priority adjustment unit 42 .

The obtaining unit 41 is configured to obtain the current priority of the filter when the filter is successfully matched.

The priority adjustment unit 42 is used for when the current priority obtained by the acquisition unit 41 is not in the first-level priority window, and the current priority is in the second-level priority window and is not the highest priority in the second-level priority window, the filter's The current priority is swapped with the priority of filters that are one level above the current priority.

The priority adjustment unit 42 is also used to set the current priority of the filter as the lowest in the secondary priority window when the current priority obtained by the acquisition unit 41 is not in the first-level priority window and not in the second-level priority window priority, and lower the priority of the filter that was originally at the lowest priority in the second priority window by one level, and lower the priority of the filter outside the first priority window and the second priority window that is higher than the current priority All downgraded.

Among them, the first-level priority window and the second-level priority window are natural number sequences representing the priority of the filter, and the priority of the filter in the first-level priority window is higher than that of the filter in the second-level priority window, and the first-level The lowest priority in the priority window is one level higher than the highest priority in the secondary priority window.

In an optional configuration of the device, as shown in FIG. 5 , the device further includes: a matching unit 43 and a determining unit 44 .

The obtaining unit 41 is configured to obtain the field to be matched from the received data packet.

Wherein, the field to be matched is characteristic information of the received data packet.

The matching unit 43 is configured to match the data packet with the filter according to the field to be matched acquired by the acquiring unit 41 .

Determining unit 44, used for matching by matching unit 43, when the field to be matched is the same as the matching information of the filter, determine that the filter is matched successfully, and inform the obtaining unit 41 of the successful filter matching result, so that the obtaining unit 41 Obtain the current priority of the filter.

Of course, in the specific implementation process of the device function, the matching unit 43 is also used for matching the data packet with the rest of the filters containing matching information according to the field to be matched when the data packet fails to match the filter, and according to these remaining filters Filters are matched in descending order of priority until the packet matches one of the remaining filters. In the matching process, if the number of data packets is more than the number of filters, at this time, the data packets cannot be matched with the filters, and the data packets are discarded.

It is worth noting that the devices shown in FIGS. 4 and 5 are used to implement the method flow corresponding to the above-mentioned FIGS. 1 to 3 .

In the filter adjustment device provided by the embodiment of the present invention, when the user equipment uses multiple communication services for a long period of time, after the acquisition unit acquires the current priority of the successfully matched filter, the priority adjustment unit determines the priority Whether the current priority is in the first-level and second-level priority windows, and when it is in the second-level priority window, adjust the priority of the filter at the specific position of the second-level priority window, so that the current priority of the filter can be judged Make adjustments so that when the user equipment frequently switches communication services, the service flow template manager does not need to set the priority of the filter to the top after each successful match, so that the priority of the filter does not need to be switched frequently, thereby reducing the The switching frequency of the filter improves the matching efficiency of the service flow template.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general-purpose hardware, and of course also by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1. An adjustment method of a filter, characterized in that, comprising: When the filter is successfully matched, the current priority of the filter is obtained, and the current priority is the same as the priority before the filter is matched; When the current priority is not in the first-level priority window, and the current priority is in the second-level priority window and is not the highest priority in the second-level priority window, set the current priority of the filter to replace with the priority of a filter one level above said current priority; When the current priority is not located in the first-level priority window and not in the second-level priority window, setting the current priority of the filter as the lowest priority in the second-level priority window, and Lower the priority of the filter that was originally at the lowest priority in the second-level priority window by one level, and filter the filters outside the first-level priority window and the second-level priority window that are higher than the current priority The priority of the device is lowered by one level; Wherein, the first-level priority window and the second-level priority window are natural number sequences representing filter priorities, and the priority of the filter in the first-level priority window is higher than that of the filter in the second-level priority window , and the lowest priority in the first-level priority window is one level higher than the highest priority in the second-level priority window. 2. The method according to claim 1, characterized in that the method further comprises: When the current priority is in the first priority window, keep the priority of the filter as the current priority; When the current priority is located in the secondary priority window and is the highest priority of the secondary priority window, keep the priority of the filter as the current priority. 3. The method according to claim 2, further comprising: before said obtaining the current priority of said filter: Obtain a field to be matched from the received data packet, where the field to be matched is characteristic information of the data packet; matching the data packet with the filter according to the matching information of the field to be matched and the filter; When the field to be matched is the same as the matching information of the filter, it is determined that the filter is successfully matched. 4. method according to claim 3, is characterized in that, described method also comprises: When the data packet fails to match the filter, according to the field to be matched, the data packet is matched with the rest of the filters containing the matching information, according to the priorities of the rest of the filters from high to low. Match until the packet successfully matches one of the remaining filters. 5. An adjustment device for a filter, comprising: An acquisition unit, configured to acquire the current priority of the filter when the filter is matched successfully, the current priority is the same as the priority before the filter is matched; A priority adjustment unit, configured to be used when the current priority acquired by the acquisition unit is not in the first-level priority window, and the current priority is in the second-level priority window and is not the highest priority in the second-level priority window , replacing the current priority of the filter with the priority of a filter one level higher than the current priority; The priority adjustment unit is further configured to set the current priority of the filter to Set as the lowest priority in the secondary priority window, and lower the priority of the filter that was originally at the lowest priority in the secondary priority window by one level, and set the priority of the primary priority window and all Priorities of filters outside the secondary priority window and higher than the current priority are all lowered by one level; Wherein, the first-level priority window and the second-level priority window are natural number sequences representing filter priorities, and the priority of the filter in the first-level priority window is higher than that of the filter in the second-level priority window , and the lowest priority in the first-level priority window is one level higher than the highest priority in the second-level priority window. 6. The device according to claim 5, characterized in that, The priority adjustment unit is further configured to keep the priority of the filter as the current priority when the current priority acquired by the acquisition unit is within the first-level priority window; The priority adjustment unit is further configured to keep the priority of the filter as The current priority. 7. The device according to claim 6, characterized in that the device further comprises:, The obtaining unit is configured to obtain a field to be matched from the received data packet, and the field to be matched is characteristic information of the data packet; a matching unit, configured to match the data packet with the filter according to the field to be matched acquired by the acquisition unit; A determining unit, configured to use the matching unit to determine that the filter is matched successfully when the field to be matched is the same as the matching information of the filter. 8. The device of claim 7, wherein: The matching unit is further configured to, when the data packet fails to match the filter, according to the field to be matched, match the data packet with other filters containing matching information, according to the remaining filter Priorities are matched in descending order until the data packet is successfully matched with one of the remaining filters.