KR102180055B1 - Method and apparatus for quality of service - Google Patents

Abstract

The present invention relates to a service quality management apparatus and method. The disclosed service quality management apparatus includes a service profile acquisition unit that acquires a service profile including a quality index request value for each service between a base station and a core network, and a network state corresponding to the quality index request value for each network section between the base station and the core network. It includes a network grasping unit that determines the quality index budget by grasping the data, and a service quality index determination unit that determines the quality index target value for each service according to the quality index budget and preset quality index range for each network section and transmits it to the base station or core network. do. The present invention has the effect of managing service quality for each network section at an appropriate level according to quality indicators required for various communication services.

Description

Service quality management device and method {METHOD AND APPARATUS FOR QUALITY OF SERVICE}

The present invention relates to a service quality management apparatus and method, and more particularly, to a service quality management apparatus and method for managing service quality at an appropriate level for various communication services.

As is well known, the current mobile communication technology is the LTE (Long Term Evolution) mobile communication system classified as a 4th generation mobile communication system, and IMT-2020 is a 5th generation mobile communication system using ultra-high band frequencies. This is under development.

These LTE mobile communication systems and next-generation mobile communication systems are characterized by providing various data services through a packet network. Accordingly, in recent years, subscribers of mobile communication services are loading web pages through their terminals, channel zapping, voice calling, video calling, games, and Various data services such as touch/response and smart metering are used.

Meanwhile, in order to provide the above-described data service, a base station that guarantees mobility of a mobile communication terminal through a wireless network has limited operational and available radio resources. Likewise, network nodes located in the core network also have limited resources for communication services.

Therefore, base stations and network nodes adopt a method of appropriately allocating and distributing and operating resources when a mobile communication terminal induces a data call for data service use.

The radio resource allocation method by the base station according to the prior art operates in the direction of increasing the capacity of the entire base station cell or even if the capacity decreases, radio resources are further allocated to mobile communication terminals in the cell boundary area to transmit data. It operates in a direction that guarantees.

However, according to the prior art, radio resources are allocated on the basis of ensuring that all mobile communication terminals in a cell have the same delay regardless of which data service is being used.

Accordingly, even if the radio resource requirements required for service quality, etc. for each service provided to the mobile communication terminal vary, the conventional radio resource allocation method has a problem in that it cannot be considered.

Republic of Korea Patent Publication No. 10-2013-0135572, Publication date December 11, 2013.

According to an embodiment of the present invention, there is provided a service quality management apparatus and method for managing service quality at an appropriate level for each network section according to quality indicators required for various communication services.

The problem to be solved of the present invention is not limited to those mentioned above, and another problem to be solved that is not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

A service quality management apparatus according to an aspect of the present invention includes a service profile obtaining unit that obtains a service profile including a quality indicator request value for each service between a base station and a core network, and the service profile acquisition unit for each network section between the base station and the core network. The base station determines the quality index target value for each service according to the quality index budget and a preset quality index range for each network section and a network identification unit that determines the network status corresponding to the quality index request value and sets a quality index budget. Alternatively, it may include a service quality indicator determining unit transmitted to the core network.

A service quality management method according to another aspect of the present invention includes obtaining a service profile including a quality index request value for each service between a base station and a core network, and requesting the quality index for each network section between the base station and the core network. Setting a quality indicator budget by identifying a network state corresponding to the value, and determining a quality indicator target value for each service according to the quality indicator budget and a preset quality indicator range for each network section to the base station or the core network. It may include the step of transmitting.

According to an embodiment of the present invention, service quality can be managed at an appropriate level for each network section according to quality indicators required for various communication services.

For example, by adaptively allocating and operating resources in accordance with a delay requirement required according to a service type provided to a mobile communication terminal, a data service in which delay is differentiated according to the service type can be provided.

Accordingly, there is an effect of providing an appropriate level or the best service quality by efficiently operating limited resources according to the type of data service.

1 is a block diagram of a mobile communication service system including a service quality management apparatus according to an embodiment of the present invention.
2 is a detailed block diagram of a quality of service management apparatus according to an embodiment of the present invention.
3 is a flowchart illustrating a service quality management method according to an embodiment of the present invention.
4 is a flowchart illustrating a service quality management method according to another embodiment of the present invention.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and are common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout this specification.

1 is a block diagram of a mobile communication service system including a service quality management apparatus according to an embodiment of the present invention.

The mobile communication service system according to the embodiment includes a mobile communication terminal 10, a base station 20, an edge cloud 30, a core network 40, an application server 50, and the like. The apparatus 100 for managing quality of service according to an embodiment of the present invention may be located in the edge cloud 30. Various mobile communication systems, such as LTE, LTE-A, and IMT-2020, may be located in the core network 40. For example, the SGW 41, the PGW 43, the MME 45, etc. may be located in the core network 40.

The mobile communication terminal 10 may be implemented as various wireless communication devices capable of communication such as a smart phone, a tablet computer, and a personal digital assistant (PDA).

The core network 40 is a network for providing various data services based on a packet network or the like. SGW (Serving Gateway) 41, PGW (Packet Data Network Gateway) 43, MME (Mobility Management Entity) 45 of the core network 40 cooperate with the application server 50 to load web pages and channel Data services such as zapping, voice calling, video calling, games, touch/response, and smart metering can be provided.

2 is a detailed block diagram of a quality of service management apparatus according to an embodiment of the present invention.

As shown, the service quality management apparatus 100 according to the embodiment includes a service profile acquisition unit 110, a network identification unit 120, a service quality index determination unit 130, and the like. The service profile acquisition unit 110 includes a service profile exchange unit 111, a service profile storage unit 113, and the like. The network identification unit 120 includes a quality indicator identification unit 121, a quality indicator budget setting unit 123, and the like.

The service profile acquisition unit 110 acquires a service profile including a quality index request value, such as service-specific delay information, service-specific data transmission rate information, and service-specific occupancy time information, between the base station and the core network.

To this end, the service profile exchange unit 111 of the service profile acquisition unit 110 includes the mobile communication terminal 10, the base station 20, the network nodes of the core network 40, SGW 41, PGW 43, A message including a service profile is exchanged with at least one of the MME 45 or the application server 50.

The service profile storage unit 113 of the service profile acquisition unit 110 manages the service profile received from the service profile exchange unit 110 through storage, update, or deletion.

The network identification unit 120 determines a network state corresponding to the quality indicator request value included in the service profile for each network section between the base station and the core network, and sets a quality indicator budget.

To this end, the quality indicator identification unit 121 of the network identification unit 120 may measure a delay measurement value, a data transmission rate, or an occupancy time for each network section between the base station and the core network.

The quality indicator budget setting unit 123 of the network identification unit 120 calculates the network delay budget determined by the delay measurement value measured for each network section between the base station and the core network and the requested delay information for each service in the service profile. Set an indicator budget. Alternatively, the quality indicator budget setting unit 123 uses the data transmission rate or occupancy time measured for each network section between the base station and the core network, or based on the data transmission rate information or occupancy time information included in the service profile. Set to

For example, the quality indicator grasping unit 121 measures network delay and processing delay for each upper/lower section and for each up/down link. Network delay can be measured through traffic sniffing, and processing delay can be read from the service profile or measured through traffic sniffing. In addition, the delay budget calculator 123 calculates the network delay budget based on the delay measurement value measured for each network section, the requested delay information for each service, and a preset margin.

The service quality indicator determination unit 130 determines a quality indicator target value for each service according to a quality indicator budget and a preset quality indicator range for each network section, and transmits it to a base station or a core network.

For example, the service quality indicator determination unit 130 transmits a delay measurement value for each network section and a delay target value for each service determined according to a network delay budget and service range to the base station or the core network. The service quality indicator determiner 130 may determine and transmit a delay target value for each service for each upper/lower section and for each up/down link.

3 is a flowchart illustrating a service quality management method according to an embodiment of the present invention.

As shown, in the service quality management method according to the embodiment, a service profile including a quality indicator request value such as service-specific delay information, service-specific data transmission rate information, and service-specific occupancy time information is provided between a base station and a core network. It includes the step of obtaining (S210).

And, it further includes a step (S220) of determining a network state corresponding to the quality index request value included in the service profile for each network section between the base station and the core network.

Subsequently, the step (S230) of setting a quality indicator budget based on a network state determined for each network section between the base station and the core network and a corresponding quality indicator request value (S230) is further included.

Next, the step of determining a quality indicator target value for each service according to a quality indicator budget and a preset quality indicator range for each network section and transmitting the determined quality indicator target value to the base station or the core network (S240).

4 is a flowchart for explaining a method of quality of service management according to another embodiment of the present invention, and shows a case in which a delay is used among service quality indicators.

As shown, the quality of service management method includes a step (S310) of acquiring a service profile including delay information for each service request between the base station and the core network. For example, a service profile may be obtained by exchanging a message including a service profile with a mobile communication terminal, a base station, a network node of a core network, or an application server.

And, it further includes a step (S320) of measuring the delay for each network section between the base station and the core network. For example, network delay and processing delay may be measured for each upper/lower section and for each up/down link. Network delay can be measured through traffic sniffing, processing delay can be read from a service profile, or processing delay can be measured through traffic sniffing.

Subsequently, the step of calculating a network delay budget determined by the delay measurement value and the requested delay information for each service (S330) is further included.

Next, the step of determining a delay target value for each service according to a delay measurement value for each network section, a network delay budget, and a service range, and transmitting it to the base station or the core network (S340). For example, the delay target value for each service may be determined and transmitted for each upper/lower section and for each up/down link.

Hereinafter, a method for managing quality of service by the apparatus for managing quality of service according to an embodiment of the present invention will be described in more detail with reference to FIGS. 1 to 3.

First, the service profile acquisition unit 110 acquires a service profile including a service-specific quality index request value between the base station 20 and the core network 40 (S210).

To this end, the service profile exchange unit 111 of the service profile acquisition unit 110 includes the mobile communication terminal 10, the base station 20, the network nodes of the core network 40, SGW 41, PGW 43, It exchanges messages including a service profile with the MME 45 and the application server 50.

For example, the service profile exchange unit 111 acquires a service profile by transmitting and receiving a service profile delivery message through a predefined API (Application Programming Interface), or through a preliminary field of a message transmitted and received for a communication service. You can send and receive.

Then, the service profile storage unit 113 manages the service profile received from the service profile exchange unit 110 through storage, update, or deletion.

For example, the service profile stored by the service profile storage unit 113 may include all or part of a profile index, routing information, request delay information, data rate, occupation time, etc. have. The routing information may include a URL, a destination IP, a port, and the like, and the request delay information may be carried along with the processing delay information in the QoS field.

Next, the network identification unit 120 determines a network state between the base station 20 and the core network 40 corresponding to the quality index request value of the service profile for each network section (S220).

For example, when the requested delay information is included in the service profile stored by the service profile storage unit 113, the quality indicator identification unit 121 measures the network delay and processing delay for each upper/lower section and for each up/down link. can do. Alternatively, when the data transmission rate or occupancy time is included in the service profile, the quality indicator determination unit 121 may measure the data transmission rate or occupancy time for each upper/lower section and for each up/down link.

In addition, the quality indicator budget setting unit 123 of the network identification unit 120 is based on the network state identified in step S220 and the corresponding quality index request value for each network section between the base station 20 and the core network 40 A quality indicator budget is set (S230).

For example, the quality indicator budget setting unit 123 includes a delay measurement value measured by the quality indicator grasping unit 121 for each network section, request delay information for each service read from the service profile of the service profile storage unit 113, and a preset margin. The network delay budget can be calculated based on. Alternatively, the quality indicator budget setting unit 123 may calculate a data rate budget based on a data rate measured for each network section, a data rate for each service read from a service profile, and a preset margin. Alternatively, the quality indicator budget setting unit 123 may calculate the occupancy time budget based on the occupancy time measured for each network section, the occupancy time per service read from the service profile, and a preset margin.

Next, the service quality indicator determination unit 130 determines a quality indicator target value for each service according to the quality indicator budget set in step S230 and a preset quality indicator range for each network section, and then the base station 20 or the core network 40 Transmit (S240).

For example, the service quality indicator determining unit 130 determines a delay target value for each service according to a delay measurement value for each network section, a network delay budget, and a service range, and determines the determined delay for each service by upper/lower sections and for each up/down link. The target value is transmitted to the base station 20 or the core network 40. Alternatively, the service quality indicator determination unit 130 determines a data transmission rate target value for each service according to a data transmission rate measurement value for each network section, a data rate budget, and a service range, and for each upper/lower section and for each up/down link. , The determined target data rate for each service is transmitted to the base station 20 or the core network 40. Alternatively, the service quality indicator determination unit 130 determines the occupancy time target value for each service according to the occupancy time measurement value for each network section, the occupancy time budget, and the service range, for each upper/lower section and for each up/down link, and the determined service The target occupancy time of the star may be transmitted to the base station 20 or the core network 40.

On the other hand, the base station 20 receives the service quality target value for each service from the service quality management apparatus 100, and operates radio resources in accordance with the received service quality target value for each service. For example, delay components such as transmission mode by radio interface protocol layer, number of retransmissions by radio interface protocol layer, scheduling priority, number of hybrid automatic repeat requests, or threshold of complex automatic retransmission block error rate. Can be adjusted. Alternatively, radio resources may be scheduled or retransmission processing may be performed to satisfy the target data transmission rate or the target occupancy time.

In addition, the core network 40 also receives a service quality target value for each service from the service quality management apparatus 100, and operates a network node or server resource in accordance with the received service quality target value for each service. For example, you can adjust the delay by changing the routing path.

Hereinafter, with reference to FIGS. 1, 2, and 4, a method of managing the quality of service by using the delay as a quality index by the service quality management apparatus according to an embodiment of the present invention will be described in more detail.

First, the service profile exchange unit 111 of the service profile acquisition unit 110 acquires a service profile including the request delay information for each service between the base station 20 and the core network 40, and the service profile storage unit 113 ) Manages the service profile transmitted from the service profile exchange unit 110 through storage, update, or deletion (S310).

For example, the service profile stored by the service profile storage unit 113 may include a profile index, routing information, and request delay information, and the request delay information may be loaded together with processing delay information in the QoS field.

Next, the quality indicator identification unit 121 of the network identification unit 120 measures the delay between the base station 20 and the core network 40 for each upper/lower network section and for each up/down link (S320), The quality indicator budget setting unit 123 calculates a network delay budget determined by the delay measurement value and the requested delay information for each service (S330).

For example, the quality indicator grasping unit 121 sniffs traffic for the upper downlink section (section a), the lower downlink section (section b), the lower uplink section (section c), and the upper uplink section (section d). Network delay can be measured through In addition, the quality indicator grasping unit 121 may measure the processing delay through traffic sniffing for the server section (e section) and the terminal section (f section). Here, the processing delay of the server section (section e) and the terminal section (section f) may be read from the QoS field of the service profile stored in the service profile storage unit 113.

In addition, the quality indicator budget setting unit 123 includes a delay measurement value measured by the quality indicator identification unit 121 for each network section, a request delay information for each service read from the service profile of the service profile storage unit 113, and a preset margin. Calculate the network delay budget based on.

For example, if the delay measurement value of section a is 10ms, the delay measurement value of section b is 20ms, the delay measurement value of section e and section f is 20ms, the required delay for each service is 50ms, and the margin is 10ms, the network delay of the uplink. The budget can be calculated as -10ms. In addition, if the delay measurement value for section c is 30ms, the measurement value for section d is 10ms, the measurement value for section e and f is 20ms, the required delay for each service is 50ms, and the margin is 10ms, the network delay of the downlink. The budget can be calculated as -20ms.

Next, the service quality indicator determination unit 130 determines a delay target value for each service according to a delay measurement value for each network section, a network delay budget, and a service range, and determines a delay target value for each upper/lower section and for each up/down link. The delay target value is transmitted to the base station 20 or the core network 40 (S340).

For example, if the service range of section a is 10ms to Nms, the delay target value for each service is determined as 10ms, if the service range of section b is 1ms to 20ms, the delay target value for each service is determined as 10ms, and If the service range is fixed, the delay target value for each service can be determined as 20 ms. In addition, if the service range of section c is 10ms~Mms, the delay target value for each service is determined as 15ms, and if the service range of section d is 5ms~20ms, the delay target value for each service is determined as 5ms. If the service range is fixed, the delay target value for each service can be determined as 20 ms.

As described so far, according to an embodiment of the present invention, it is possible to manage service quality for each network section at an appropriate level according to quality indicators required for various communication services.

For example, by adaptively allocating and operating resources in accordance with a delay requirement required according to a service type provided to a mobile communication terminal, a data service in which delay is differentiated according to the service type can be provided.

Accordingly, limited resources can be efficiently operated according to the type of data service to provide an appropriate level or the best QoS.

Combinations of each block in the block diagram attached to the present specification and each step in the flowchart may be performed by computer program instructions. Since these computer program instructions can be mounted on a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, the instructions executed by the processor of the computer or other programmable data processing equipment are shown in each block or flow chart of the block diagram. Each step creates a means to perform the functions described. These computer program instructions can also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular way, so that the computer-usable or computer-readable memory It is also possible to produce an article of manufacture in which the instructions stored in the block diagram contain instruction means for performing the functions described in each block or flow chart. Computer program instructions can also be mounted on a computer or other programmable data processing equipment, so that a series of operating steps are performed on a computer or other programmable data processing equipment to create a computer-executable process to create a computer or other programmable data processing equipment. It is also possible for the instructions to perform the processing equipment to provide steps for performing the functions described in each block of the block diagram and each step of the flowchart.

In addition, each block or each step may represent a module, segment, or part of code comprising one or more executable instructions for executing the specified logical function(s). In addition, it should be noted that in some alternative embodiments, functions mentioned in blocks or steps may occur out of order. For example, two blocks or steps shown in succession may in fact be performed substantially simultaneously, or the blocks or steps may sometimes be performed in the reverse order depending on the corresponding function.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

According to an embodiment of the present invention, resources can be adaptively allocated and operated in accordance with the quality of service required according to the type of service provided to the mobile communication terminal.

The present invention can be used in a mobile communication technology field that operates various mobile communication systems including LTE, LTE-A, and IMT-2020.

10: mobile communication terminal 20: base station
30: edge cloud 40: core network
50: application server 100: service quality management device
110: service profile acquisition unit 111: service profile exchange unit
113: service profile storage unit 120: network identification unit
121: quality indicator grasp unit 123: quality indicator budget setting unit
130: Service quality indicator decision unit

Claims (16)

A service profile acquisition unit that acquires a service profile including a quality index request value for each service between the base station and the core network,
A network grasp unit configured to set a quality index budget by determining a network state corresponding to the quality index request value for each network section between the base station and the core network;
A service quality management apparatus comprising a service quality indicator determining unit for determining a service-specific quality indicator target value according to the quality indicator budget and a preset quality indicator range for each network section and transmitting the determined value to the base station or the core network. The method of claim 1,
The service profile includes request delay information for each service,
The network identification unit sets the quality indicator budget by calculating a delay measurement value measured for each network section between the base station and the core network and a network delay budget determined by the requested delay information for each service,
The service quality indicator determining unit determines a delay target value for each service as the quality indicator target value for each service according to the delay measurement value for each network section, the network delay budget, and a preset service range. Device. The method of claim 2,
The service profile obtaining unit exchanges a message including the service profile with at least one of a mobile communication terminal, the base station, a network node of the core network, or an application server. The method of claim 2,
The network grasping unit measures a network delay and a processing delay for each upper/lower section and each up/down link. The method of claim 4,
The network detection unit, the service quality management apparatus, characterized in that to measure the network delay through traffic sniffing. The method of claim 4,
The network detection unit reads the processing delay from the service profile or measures the processing delay through traffic sniffing. The method of claim 2,
And the service quality indicator determining unit determines and transmits the delay target value for each service for each upper/lower section and for each up/down link. The method of claim 1,
The service profile includes data transmission rate information or occupancy time information for each service,
The network identification unit sets the quality index budget using the data transmission rate or occupation time measured for each network section between the base station and the core network, or based on the data transmission rate information or occupancy time information included in the service profile. and,
And the service quality indicator determining unit determines the quality indicator target value for each service according to the quality indicator budget and a preset service range for each network section. ◈ Claim 9 was abandoned upon payment of the set registration fee. Acquiring a service profile including a quality index request value for each service between the base station and the core network,
Setting a quality index budget by determining a network state corresponding to the quality index request value for each network section between the base station and the core network; and
And determining a quality index target value for each service according to the quality index budget and a preset quality index range for each network section and transmitting the determined quality index target value to the base station or the core network. ◈ Claim 10 was abandoned upon payment of the set registration fee. The method of claim 9,
The service profile includes request delay information for each service,
The setting may include setting the quality indicator budget by calculating a network delay budget determined by a delay measurement value measured for each network section between the base station and the core network and the requested delay information for each service,
The transmitting comprises determining a delay target value for each service as the quality index target value for each service according to the delay measurement value for each network section, the network delay budget, and a preset service range. . ◈ Claim 11 was abandoned upon payment of the set registration fee. The method of claim 10,
The obtaining step comprises exchanging a message including the service profile with at least one of a mobile communication terminal, the base station, a network node of the core network, or an application server. ◈ Claim 12 was abandoned upon payment of the set registration fee. The method of claim 10,
The setting step comprises measuring network delay and processing delay for each upper/lower section and for each up/down link. ◈ Claim 13 was abandoned upon payment of the set registration fee. The method of claim 12,
The setting step comprises measuring the network delay through traffic sniffing. ◈ Claim 14 has been abandoned upon payment of the set registration fee. The method of claim 12,
The setting may include reading the processing delay from the service profile or measuring the processing delay through traffic sniffing. ◈ Claim 15 was abandoned upon payment of the set registration fee. The method of claim 10,
The transmitting step comprises determining and transmitting the delay target value for each service for each upper/lower section and for each up/down link. ◈ Claim 16 was abandoned upon payment of the set registration fee. The method of claim 9,
The service profile includes data transmission rate information or occupancy time information for each service,
The setting may include using the data transmission rate or occupancy time measured for each network section between the base station and the core network, or based on the data transmission rate information or occupancy time information included in the service profile, as the quality index budget. Set up,
The transmitting step comprises determining a target value of the quality indicator for each service according to the quality indicator budget and a preset service range for each network section.

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