KR100745677B1 - Method and apparatus for providing differential service in home network - Google Patents

Abstract

The present invention provides a method of a home network that connects various network access terminals based on a home server and provides various services, wherein the home server extracts a multipacket field of a packet input from the access terminals; Determining the priority of the access terminals and the services using the extracted multipacket field, and setting a service of a desired quality according to the characteristics of the access terminals. It can be reflected in the home quality priority policy by reflecting the function specification of the access terminal, and can also support quality assurance for multimedia services requiring high performance and high quality, and the user can control various service policies of the home network using the home server. By using the various services of the home network It is capable of providing effective.

Home network, home server control unit, home server switch unit, home P2P device, virtual LAN recognition device, type service recognition device, high / low priority device.

Description

METHOD AND APPARATUS FOR PROVIDING DIFFERENTIAL SERVICE IN HOME NETWORK}

1 is a block diagram illustrating a configuration of a home network including a service providing device, an indoor terminal, and application services according to an embodiment of the present invention;

2 is a block diagram showing the structure of a multi-packet field used in determining a quality guarantee rank in a home network according to an embodiment of the present invention;

3 is a block diagram illustrating a correlation between a multipacket field and a service requiring quality guarantee according to an embodiment of the present invention;

4 is a flowchart illustrating a procedure for determining quality assurance through multipacket field analysis in a home network according to an embodiment of the present invention.

The present invention relates to a method and a system for providing a service in a home network connecting various network access terminals, and more particularly, to a method and an apparatus for providing a differentiated service in which quality is guaranteed according to characteristics of a terminal and a user's request.

In the existing home network using a single personal computer (PC) in the home, the development of external network access performance such as modem, ADSL, VDSL, FTTC, and FTTH has been actively promoted. However, as the home network is developed into an environment in which various home terminals are interworked with an IP network and each terminal can be controlled under a network environment, research on the configuration and services of the home network as well as external network access is being conducted.

On the other hand, home networks have been developed to provide services using voice and video data such as VoIP, VOD, and IPTV as in-house services in the future. Accordingly, many methods for smoothly supporting the services have been studied.

In general, there is no big problem to operate as the existing Internet and data network in the home network network quality of service (QoS) is inadequate in the conventional built and operated home network. However, when a more differentiated service such as services using voice and video data such as VoIP, VOD, and IPTV is accommodated, the quality of voice and video inevitably occurs depending on the home network environment.

However, in the existing home network environment, a simple home gateway device that functions as an xDSL modem is mainly used, and since home servers remain in the role of a kind of composite terminal in the form of an IP set-top box, various home terminals There is a problem that does not meet the needs of the application service. Also, as a solution to this problem, methods for accommodating a virtual local area network (VLAN) and differentiated services (DiffServ), which are studied in the existing Internet network, have been proposed. A virtual LAN is a technology in which a series of end stations spanning multiple physically separated LAN segments can communicate as if they belong to one common LAN regardless of their physical location. Such a virtual LAN reduces bandwidth waste and increases the efficiency of the entire network by limiting the area where broadcast and multicast traffic of the existing LAN is transmitted. In addition, the virtual LAN enhances network security by creating a virtual boundary to transmit data only to desired groups.

However, most of the proposed quality of service (QoS) solutions simply apply the above-described concepts of VLAN or DiffServ based network to the home network. However, devices such as home servers that function as existing set-top boxes or home gateways that perform only simple network distribution functions do not meet the characteristics of various network access terminals in the home network or the needs and conveniences of home users. .

Therefore, various types of home access terminals are difficult to uniformly accommodate the virtual LAN (VLAN) or differential service (DiffServ), and, unlike the service provider-oriented internet network, in the home network, the home user arbitrarily prioritizes traffic in the home network. There is a problem that should be able to set the ranking and the quality of service.

Accordingly, an object of the present invention is to provide a differentiated service in a home network using multiple packet fields to accommodate differentiated traffic processing requests for various terminal devices and services in the home by a home user in a home server-based home network environment. To provide a method and apparatus for.

The apparatus for achieving the above objects of the present invention, in a home network that connects various network access terminals, and provides various services of the home network, extracts a multipacket field of packets input from the access terminals, and A home server switch unit that performs network distribution according to a rank, and sets a service of a desired quality according to the characteristics of the access terminals, and prioritizes the access terminals and the services according to the extracted multipacket field information. A home server controller which determines a priority and prioritizes a control packet to be used as its highest priority through a tag field of the extracted multipacket field; and a packet home server switch unit to the home server controller Request a service between premises terminals, source field (SA) of the extracted multiple packet field It is characterized in that it comprises a home information sharing (P2P) device that is assigned a high priority through the / destination field (DA), and used when performing the personal service of the user.
In addition, a method for achieving the objects of the present invention, in a home network that connects a variety of network connection terminals based on a home server, and provides a variety of services, the home server, according to the characteristics of the access terminal desired by the user A process of setting a quality service, extracting a multipacket field of packets inputted from the access terminals, and controlling a packet by first packet forwarding through a tag field of the extracted multipacket field. ₀ ) determining the priority as the highest priority of the system, and determining the P2P service as the next higher priority through the source address (SA) / destination address (DA) field of the multiple packet field. And providing a corresponding service to the user according to the determined priority.

delete

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The present invention supports a network distribution function of various qualities according to the characteristics of a terminal and a user's request in an in-home home network environment connecting various network access terminals. To this end, the home network performs the function of accessing the external network and the distribution of the home network, and requests the service of desired quality by using the quality of service (QoS) control function of the home network. In the home server based home network environment, the present invention provides a tag field, a source address (hereinafter abbreviated as SA, abbreviated as SA), and a destination address in order to accommodate various quality of service requests by various home access terminals and users. Differentiated services are provided using various multipacket fields, such as a destination address (hereinafter, abbreviated as DA) field, an IEEE 802.1 P / Q field, and an IP service type (IP ToS) field.

Next, an apparatus and method for providing differentiated services by guaranteeing service quality in a home network environment according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, the overall structure of the home network including a device for providing differentiated services will be described.

1 is a block diagram illustrating a configuration of a home network including a service providing device, an indoor terminal, and application services according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the home network includes a home server controller 110 and a home server switch 120.

Referring to FIG. 1, a home network will be described with reference to FIG. 1. A home network includes various network access terminals based on a home server 100 including a home server controller 101 and a home server switch unit 102. And a service device.

The home server 100 is connected to the Internet network and interoperates with service devices requesting various service terminals and various services through the home server switch 102. That is, the various access terminals and service devices include a home-to-peer sharing device (P2P) device 120, a virtual local area network (VLAN) recognition device (130), and a service. A type aware device 140, a high priority device 150, a low priority device 160, or the like.

The home server controller (QM: QoS Manager) 101 sets a service of a quality desired by a user according to the characteristics of a home access terminal, determines a quality guarantee priority for the home access terminal and a service, and sets up a home as an application program. Defined by the user. This predefined quality assurance priority is used as priority information in packet forwarding with reference to the home server switch 102.

The home server switch unit 102 is responsible for network distribution and extracts multiple packet fields, i.e., IEEE802.3ac Tag field, SA / DA, and 802.1P / Q or IP Service Type (ToS) fields of an input packet. To the home server controller 101.

 On the other hand, there are access terminals with various functions and uses in the home network, and the home user requests various types of services. For this purpose, the indoor P2P device 120 requests a service between indoor terminals and has a high priority since it is mainly used when performing a user's personal service. The division of home P2P service is made by defining MAC addresses of two peer terminals as SA / DA.

The virtual LAN recognition device 130 may be used as a priority of the terminal itself as the terminal can support the 802.1P / Q virtual LAN (VLAN) service, but the user subdivides the individual quality assurance for the service in the terminal. It is configured to request. That is, the virtual LAN recognition apparatus 130 supports smooth service by allocating high priority in the case of an application program requiring high quality services such as VoIP, VoD, and IPTV even in the same terminal.

Similar to the virtual LAN recognition device 130, the service type recognition device 140 uses a function of using a service header (IP type) field of an IP header such as IP differentiated services (DiffServ) rather than an 802.1P / Q function. It can be used when the mobile terminal supports granular quality assurance by application service. Differentiated services (DiffServ or DS: differentiated services) specify network traffic by class so that it has priority over other types of general traffic for relatively special types of traffic such as voice, etc. Protocol to control. The differential service (DiffServ) is the most advanced way of managing traffic in the form of a class of service, namely a class of service (CoS). DiffServ, unlike earlier approaches such as tag usage in 802.1p and Type of Service (ToS), instead of simply tagging for priority to determine how to deliver a given network packet, Use more complex policies or rules.

On the other hand, the high / low priority device 150/160 specifies the priority for the entire terminal using only the MAC (MAC) address in the access terminal that does not support the additional function. Accordingly, the high / low priority device 150/160 may make a priority request for a device requiring only low traffic or devices requiring high traffic.

The structure of a multipacket field extracted from a home server in a home network environment configured as described above will be described with reference to the accompanying drawings.

2 is a block diagram illustrating a structure of a multipacket field used in determining a quality guarantee rank in a home network according to an embodiment of the present invention.

Referring to FIG. 2, the home server 100 extracts a MAC address from an initial Ethernet header in a structure 200 of a packet used in a home network, and IEEE 802.ac Tag 210 between the MAC address and the IP header. Extract information on the 802.1P / Q field from the header information.

In addition, the control packets performed by the home server controller 101 are assigned the highest priority using the 802.ac Tag header field 220. In addition, the service type (ToS) field 230 used for the DiffServ function is located inside the IP header.

3 is a block diagram illustrating a correlation between a multipacket field and a service requiring quality guarantee according to an embodiment of the present invention.

Referring to FIG. 2, first, the control packets 300 used in the control path between the home server controller 101 and the indoor terminal use the tag (QM_Tag) field 220 and have the highest priority internally. Is assigned.

Second, the home P2P service packets 310 are referred to by priority by SA / DA MAC address, and the second high priority is assigned to increase utilization of the home users' personal data and services.

Third, if the LAN or DiffServ function is not supported or if a high or low quality guarantee is required due to the characteristics of the terminal itself, priority is obtained using only the MAC address of the access terminal 320. Allocate

 Finally, if quality assurance is possible in detail for each service in each terminal (330), priority is requested by using a virtual LAN (VLAN) or differential service (DiffServ) function, which is assigned priority for the terminal itself (320). It can be defined in duplicate. That is, it is possible to basically specify the priority for the terminal, and is configured to support a plurality of priorities in one terminal by additionally assigning a detailed priority for the service.

A method of providing differentiated services by determining priorities for quality guarantee in the home network environment using a multipacket field having such a structure will be described in detail with reference to the accompanying drawings.

4 is a flowchart illustrating a quality assurance ranking determination procedure through multipacket field analysis in a home network according to an embodiment of the present invention.

Referring to FIG. 4, in step 401, the home server 100 extracts a multipacket field from an input packet.

Then, the home server 100 compares the extracted multipacket fields and performs a process of allocating finally required priorities in packet forwarding. Accordingly, in step 402, the home server 100 checks whether the 802.3 ac Tag field value is used in the home server control unit (QM) 101. If it is used in the home server control unit (QM) 101, the home server 100 first checks in step 403. In the first packet forwarding (forward_P ₀ ), the system assigns the highest priority to the system and proceeds to step 404.

On the other hand, if it is not used by the home server controller (QM) 101, in step 404, the home server 100 checks whether the home server P2P service is determined through the SA / DA field. As a result of the check, in step 405, the decision on the home P2P service is allocated as the priority of the second packet forwarding (forward_P ₁ ). On the other hand, if not, in step 406, the home server 100 checks whether there is a priority request for the DA value, and if there is a request, checks whether there is a setup request for each additional service in step 407. That is, it is checked whether the priority is determined by an additional subdivided field in a terminal supporting a virtual LAN (VLAN) or a differential service (DiffServ). If there is a request for additional service setting, the home server 100 checks whether there is 802.1P in step 408, and if there is a third or fourth packet forwarding (forward_P ₂ / P ₃ ) in step 409, Assign. In this case, the priority is determined by an additional subdivided field in a terminal that supports a virtual LAN (VLAN) or a differential service (DiffServ). On the other hand, if there is no 802.1P, in step 410, the home server 100 assigns priority to the fifth or sixth packet forwarding case (forward_P ₄ / P ₅ ).

If there is no setup request for each additional service in step 407, that is, if there is no setup request for each additional service (802.1P / DiffServ) using a virtual LAN (VLAN) or a service type (ToS), the home server 100 in step 411. If it is determined whether the 802.1P exists, the process proceeds to step 409, and if not, in step 412, the priority of the seventh packet forwarding (forward_P ₆ ) is allocated. That is, the priority of the low priority device 160 is determined.

On the other hand, if it is not the DA priority request in step 406, in step 413, the home server 100 checks whether there is a setup request for each additional service, and proceeds to step 408 if there is a setup request for each additional service. On the other hand, if there is no setup request for each additional service, the process checks whether there is 802.1P in step 414, and proceeds to step 409. Otherwise, in step 415, priority is assigned in the eighth packet forwarding (forward_P ₇ ). That is, the home server 100 determines the priority assigned to packets with fields that are not defined in all cases.

On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, various modifications are of course possible without departing from the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention can be reflected in the home quality priority policy by reflecting the functional specification of the home access terminal, and can also support quality assurance for multimedia services requiring high performance and high quality. By providing a function of controlling various service policies of the home network, it is possible to provide various services of the home network to the user.

Claims (11)

In a home network that connects various network access terminals and provides various services of the home network, A home server switch unit which extracts multiple packet fields of packets inputted from the access terminals and performs network distribution according to priorities; Set a service of a desired quality according to the characteristics of the access terminals, determine the priority of the access terminals and the service according to the information of the extracted multi-packet field, and the tag of the extracted multi-packet field ( A home server controller for determining the priority of the control packet to be used by the user through a Tag) field; Request the service between the terminals in the home server through the packet home server switch unit, and is assigned a high priority through the source field (SA) / destination field (DA) of the extracted multiple packet field, Differentiated service providing device in a home network, characterized in that it comprises a home-to-house information sharing (P2P) device used when performing a personal service. delete The method of claim 1, The virtual LAN service may be used as a priority of the terminal itself, and further comprising a virtual LAN recognition device for subdividing and requesting individual quality assurance for the service of the terminal to the home server controller through the packet home server switch unit. Differentiated service providing device in a home network. The method of claim 1, And a service type recognition device used when a terminal using a service type field of an IP header such as an IP differential service in the multipacket field supports granular quality assurance for each application service. Differentiated service providing device in the network. The method of claim 1, Provided differentiated services in a home network, characterized in that the access terminal that does not support the additional function further comprises a high or low priority device for assigning a priority to the entire access terminal using only the MAC (MAC) address Device. In a home network that connects various network access terminals based on a home server and provides various services, the home server includes: Setting a service of a desired quality according to the characteristics of the access terminals; Extracting multiple packet fields of packets inputted from the access terminals; Determining a priority of the control packet with the highest priority of the system at the first packet forwarding (P ₀ ) through a tag field of the extracted multipacket field; Determining, at a next higher priority, an on-premises P2P service through the source address (SA) / destination address (DA) field of the multiple packet field; And providing a corresponding service to the user according to the determined priority. The method of claim 6, Check whether there is a priority request from the user according to the destination address (DA) field of the multiple packet field, and if there is a priority request according to the destination address (DA) field, the seventh packet forwarding (P ₆ ) takes precedence. Differentiated service providing method in a home network, characterized in that it further comprises the step of determining by ranking. The method of claim 7, wherein If there is a priority request according to the 802.1P field of the multipacket field according to the additional service-specific setting request, and if there is a priority request according to the 802.1P field, the third or fourth packet forwarding (P ₂ / P ₃₎ Differentiated service providing method in the home network, characterized in that it further comprises the step of determining the priority. The method of claim 8, If there is no priority request according to the 802.1P field, the method for providing differentiated services in a home network, further comprising the step of determining the priority at the fifth or sixth packet forwarding (P ₄ / P ₅ ) . The method of claim 7, wherein If there is no priority request according to the destination address (DA) field, checking whether there is a priority request according to the 802.1P field of the multipacket field according to a request for setting additional services; If there is a priority request according to the 802.1P field, the method for providing differentiated services in a home network, further comprising the step of determining the priority at the third or fourth packet forwarding (P ₂ / P ₃ ) . The method of claim 10, If there is no priority request according to the eighth field, 802.1P (P ₇₎ when a differentiated service providing method in a home network according to claim 1, further comprising the step of determining a priority.

Images