KR20060063376A - Apparatus of home gateway for iptv service and method for readjustment of service priority using it - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a home gateway device for an internet protocol TV service and a method for re-prioritizing a service using the same.

2. The technical problem to be solved by the invention

The present invention provides the Internet in which a user requests quality of service (QoS) level adjustment to ensure quality of service (QoS) for an Internet Protocol TV (IPTV) multimedia stream in which the user requests quality of service (QoS) level adjustment in a home network. An object of the present invention is to provide a home gateway device capable of re-adjusting a priority level of an IPTV multimedia stream packet and a method of re-prioritizing a service using the same.

3. Summary of Solution to Invention

The present invention provides traffic prioritization means for assigning a service priority according to the type of traffic input from an external network and delivering the service priority to a home network according to the assigned priority; And managing Internet Protocol TV (IPTV) service priority for readjustment of Quality of Service (QoS) for Internet Protocol TV (IPTV) traffic of the traffic processing means, and receiving a channel subscription / channel subscription message delivered from a home network manager. Means for changing an Internet Protocol TV (IPTV) channel for delivery to a higher router.

4. Important uses of the invention

The invention is used in communication systems and the like.

Home Gateway, Quality of Service (QoS), Reprioritization of Service, Internet Protocol TV (IPTV)

Description

Apparatus of Home Gateway for IPTV Service and Method for Readjustment of Service Priority using it}             

1 is a configuration diagram of an embodiment of a home gateway device for an Internet Protocol TV (IPTV) service according to the present invention;

2 is a diagram illustrating an embodiment of a service prioritization method for an Internet Protocol TV (IPTV) stream according to the present invention.

* Explanation of symbols for the main parts of the drawings

110: traffic processing block 111: packet filter and network address translation unit

112: multicast packet classification unit 113: priority tag regeneration unit

114: Switch with Priority Based Scheduling Queue

120: IPTV Channel Change Proxy Block

121: IPTV stream forwarding management unit 122: IPTV service priority management unit

130: external network interface 140: home network service quality management unit

150: home network interface

The present invention relates to a home gateway device for an Internet Protocol TV (IPTV) service and a method for re-prioritizing a service priority using the same. More particularly, the present invention relates to an Internet protocol TV (QoS) level request by a user in a home network. IPTV) home gateway devices that can re-adjust priority tags of Internet Protocol TV (IPTV) multicast stream packets requested by users and service priorities using them to ensure quality of service (QoS) for multicast streams It is about a method.

In the case of the Internet Protocol TV (IPTV) service, it is often a paid service, and such a paid service requires a method that can guarantee a higher quality of service (QoS) than other free services.

In general, an Ethernet-based network uses a priority-based quality of service (QoS) method, which provides a priority level for service traffic belonging to the same priority group. Do not make a difference. However, even the same kind of service traffic may need to be given higher priority depending on the nature of the service. For example, the premium channel of Internet Protocol TV (IPTV) pays for and receives services, so the multimedia stream traffic corresponding to the Internet Protocol TV premium channel has a higher priority than other general multimedia stream traffic. It should be possible to have a rank.

In the case of the above example, a conventional solution may be a method of increasing the service priority level from the Internet protocol TV (IPTV) stream generation device in advance. However, there is a problem that the Internet Protocol TV (IPTV) stream device may not support increasing the service priority level only for a specific service stream or may not use the service priority level.

Therefore, in a home network environment supporting quality of service (QoS) in accordance with a priority-based quality of service (QoS) guarantee scheme, a higher quality of service (QoS) for the Internet Protocol TV (IPTV) stream than that of other multimedia streams is achieved. In order to guarantee it, a method that a home gateway can re-prioritize and re-introduce into a home network regardless of the existing service priority level of the Internet protocol TV (IPTV) stream packets coming from an external Internet network is required.

The present invention has been proposed to solve the above problems, and the user can guarantee the quality of service (QoS) for the Internet Protocol TV (IPTV) multimedia stream that the user requests to adjust the quality of service (QoS) level in the home network. An object of the present invention is to provide a home gateway device capable of re-adjusting a priority level of an IPTV multimedia stream packet that has requested a quality of service (QoS) level adjustment and a method of adjusting service priority using the same.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The apparatus of the present invention for achieving the above object, in the home gateway device for the Internet protocol TV service, give a service priority according to the type of traffic input from the external network, and to the home network according to the assigned priority Traffic processing means for forwarding; And managing Internet Protocol TV (IPTV) service priority for readjustment of Quality of Service (QoS) for Internet Protocol TV (IPTV) traffic of the traffic processing means, and receiving a channel subscription / channel subscription message delivered from a home network manager. And means for changing an Internet Protocol TV (IPTV) channel for delivery to a higher router.

Meanwhile, the method according to the present invention confirms that the Internet Protocol TV (IPTV) stream forwarding management unit has received a channel subscription request message from the Internet Protocol TV (IPTV) client, and gives priority to the Internet Protocol TV (IPTV) service priority management unit. Providing priority information informing the ranking information; A resource checking step of confirming, by the IPTV service priority management unit, whether there is a resource sufficient to service an Internet Protocol TV (IPTV) stream requested by a home network quality of service (QoS) management unit; A quality of service (QoS) allocation step of allocating a quality of service (QoS) in which the home network quality of service (QoS) management unit satisfies the requested priority in the resource checking step; The IPTV service priority management unit instructs the priority tag regenerating unit to regenerate the priority tag for packets having a multicast address corresponding to the requested Internet protocol TV (IPTV) channel as a destination address. Priority tag regeneration indicating step; A packet forwarding step of allowing the Internet Protocol TV (IPTV) service priority manager to allow the Internet Protocol TV (IPTV) stream forwarding manager to forward corresponding packets; The IPTV stream forwarding management unit registers the multicast address of the requested channel to the multicast packet classifier so that forwarding is performed when the corresponding packet arrives, and the channel join request message is retransmitted to the upper router. A subscription request message delivery step; An Internet Protocol TV (IPTV) stream packet transmission step of sending the requested Internet Protocol TV (IPTV) stream packet to a home gateway by the upper router receiving the channel subscription request message transmitted in the channel subscription request message delivery step; An IP protocol packet checking / transmitting step of confirming that the multicast packet classification unit has received the registered IPTV packet, and delivering the registered IP protocol packet to the priority tag regenerating unit; And a priority resetting / transmitting step of transmitting, by the priority tag regeneration unit, the priority tag of the packet registered to regenerate the priority to the requested priority, and then delivering the priority tag to the Internet Protocol TV (IPTV) client of the home gateway. It is characterized by.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a home gateway device for an Internet Protocol TV (IPTV) service according to an embodiment of the present invention, and shows a home gateway device capable of re-adjusting service priority for an Internet Protocol TV (IPTV) service stream packet. .

As shown in FIG. 1, the home gateway apparatus for an Internet Protocol TV (IPTV) service according to the present invention gives a service priority according to the type of traffic coming from the external network interface 130, and gives priority to the assigned priority. Therefore, the Internet Protocol TV (IPTV) service priority for traffic quality control (110) to the home network interface 150, the quality of service (QoS) readjustment for the Internet Protocol TV (IPTV) traffic of the traffic processing block 110 An Internet Protocol TV (IPTV) channel change proxy block 120 that manages the ranking and delivers the channel subscription and channel subscription message delivered from the home network quality of service (QoS) management unit 140 to the upper router.

The traffic processing block 110 is responsible for assigning an appropriate service priority according to the type of traffic coming from the external network interface 130 and delivering it to the home network interface 150 according to the priority.

In addition, the traffic processing block 110 is a multicast packet classifier 112 for classifying Internet protocol TV (IPTV) traffic coming from the external network interface 130, for the service traffic input to the traffic processing block 110 Packet packet and network address translator 111, the multicast packet classifier 112, and the packet transmitted from the filter and network address translator 111 that perform the filtering process or the address translation process according to the filter rule. Priority tag regeneration unit 113 for re-adjusting the priority information tag to a specified priority level, and each packet through scheduling and queuing according to the priority recorded in the packet transmitted from the priority tag regeneration unit 113. Switch 114 having a priority-based scheduling queue that transmits each packet to home network interface 110 according to their priority. It includes.

Internet protocol TV (IPTV) traffic coming from the external network interface 130 is classified separately in the multicast packet classifier 112 and delivered to the priority tag regenerator 113.

The priority tag regenerator 113 readjusts the priority information tag of the packet to the designated priority level for packets having the designated multicast address as the destination address.

The other service traffic is delivered to the packet filter and the network address translator 111, and then filtered or addressed according to the filter rule and then transmitted to the priority tag regenerator 113.

The priority tag regenerator 114 gives a low priority to these generic packets.

All traffic with priority tag inserted by priority tag regenerator 113 is forwarded to switch 114 with priority-based scheduling queue, and switch 114 with priority-based scheduling queue is written to the packet. Each packet is transmitted to the home network interface 110 according to the priority of each packet through scheduling and queuing according to the priorities.

On the other hand, the Internet Protocol TV (IPTV) channel conversion proxy block 120 serves to deliver the channel subscription and channel cancellation message sent by the home network quality of service (QoS) management unit 140 of the home network to the upper router, He is also responsible for managing Internet Protocol TV (IPTV) service priorities to rebalance the quality of service (QoS) for Internet Protocol TV (IPTV) traffic.

The Internet Protocol TV (IPTV) channel conversion proxy block 120 forwards the Internet Protocol TV (IPTV) channel conversion request to the upper router, and the multicast packet classifier 112 of the traffic processing block 110 is connected to the Internet Protocol TV (IP) channel conversion request. Internet Protocol TV (IPTV) stream forwarding management unit 121 for managing the IPTV streams to be recognized and delivered to the priority tag regenerator 113, and Internet protocol for managing the priority of the Internet Protocol TV (IPTV) stream. IP (TVTV) service priority management unit 122 is included.

The Internet Protocol TV (IPTV) stream forwarding management unit 121 has a function of transmitting an Internet Protocol TV (IPTV) channel conversion request to a higher router, and the multicast packet classification unit 112 of the traffic processing block 110 has an Internet protocol TV ( IPTV) stream is responsible for managing the recognition so that it can be delivered to the priority tag regenerator 113.

The Internet Protocol TV (IPTV) service priority management unit 122 manages the priority of the Internet Protocol TV (IPTV) stream.

The Internet Protocol TV (IPTV) service priority manager 122 requests the home network quality of service (QoS) manager 140 to allocate resources (eg, network bandwidth, etc.) for the Internet Protocol TV (IPTV) stream. In addition, the priority tag regenerating unit 113 of the traffic processing block 110 is responsible for setting the priority re-adjustment.

The home network quality of service (QoS) manager 140 is responsible for allocating and managing necessary resources such as network bandwidth for traffic that each device wants to generate for various devices connected to the home network. Here, the home network quality of service (QoS) management unit 140 may be on the home gateway or may be located on another server in the home network.

2 is a diagram illustrating an embodiment of a service prioritization method for an Internet Protocol TV (IPTV) stream according to the present invention.

As shown in FIG. 2, in the method of reprioritizing the service priority for the Internet Protocol TV (IPTV) stream according to the present invention, the Internet Protocol TV (IPTV) stream forwarding management unit 121 may be configured as an Internet Protocol TV (IPTV) client (IPTV). When receiving the channel subscription request message from the 210 (231), the Internet Protocol TV (IPTV) service priority management unit 122 notifies the priority information (232).

Next, the Internet Protocol TV (IPTV) service priority management unit 122 asks the home network quality of service (QoS) management unit 140 whether there is enough resources to service the requested Internet Protocol TV (IPTV) stream. (233).

If there are enough resources to guarantee the requested priority, the home network quality of service (QoS) manager 140 allocates 234 the quality of service (QoS) that satisfies the requested priority.

Subsequently, the Internet Protocol TV (IPTV) service priority management unit 122 receives packets having a multicast address corresponding to the Internet Protocol TV (IPTV) channel requested to subscribe to the priority tag regenerating unit 113 as a destination address. Instruct 235 to regenerate the priority tag.

In addition, the Internet Protocol TV (IPTV) service priority manager 122 permits the Internet Protocol TV (IPTV) stream forwarding manager 121 to forward corresponding packets (236).

The Internet Protocol TV (IPTV) stream forwarding management unit 121 registers the multicast address of the requested channel to the multicast packet classification unit 112 so that forwarding is performed when the corresponding packet arrives (237). The message is retransmitted to the higher router 220 (238).

Upon receiving the channel subscription request message, the upper router 220 sends the requested Internet Protocol TV (IPTV) stream packet to the home gateway, where the Internet Protocol TV (IPTV) stream packets are not assigned a priority tag or a user. May have a lower priority tag than the requested priority.

When the multicast packet classifier 112 receives the registered Internet Protocol TV (IPTV) packets, the multicast packet classifier 112 transmits the received packet to the priority tag regenerator 113 (239).

The priority tag regenerating unit 113 resets the priority tag of the packets registered to regenerate the priority to the requested priority, and then transmits the 240 to the Internet Protocol TV (IPTV) client 210 of the home gateway. Then, the Internet Protocol TV (IPTV) client 210 first processes the registered Internet Protocol TV (IPTV) packets according to the priority-based queuing scheme so that the requested quality of service (QoS) is guaranteed.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily carried out by those skilled in the art to which the present invention pertains, it will not be described in detail any further.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention provides an Internet Protocol TV (TV) requested by a user so as to guarantee Quality of Service (QoS) for an Internet Protocol TV (IPTV) multicast stream in which a user requests quality of service (QoS) level adjustment in a home network. By rebalancing the priority tag of IPTV) multicast stream packets, Internet Protocol TV (IPTV) streams belong to the same class of service as other multimedia streams, but they can be given higher priority over Internet Protocol TV (IPTV) streams. Therefore, in case of paid Internet Protocol TV (IPTV) stream, higher quality of service (QoS) can be guaranteed by giving higher priority than general multimedia stream generated from home network.

Claims (9)

In the home gateway device for the Internet protocol TV service, Traffic processing means for assigning a service priority according to the type of traffic input from the external network and delivering the service priority to the home network according to the assigned priority; And Manage the Internet Protocol TV (IPTV) service priority for readjustment of the quality of service (QoS) for the Internet Protocol TV (IPTV) traffic of the traffic processing means, and the channel subscription / channel subscription message delivered from the home network manager is higher Means for changing Internet Protocol TV (IPTV) channels for forwarding to routers Home gateway device comprising a. The method of claim 1, The traffic processing means, Multicast packet classification means for classifying Internet protocol TV (IPTV) traffic from the external network; Packet filtering / network address translation means for performing filtering processing / address translation processing on service traffic input to the traffic processing means according to a filter rule; Priority tag regenerating means for re-adjusting the priority information tag of the packet to a designated priority level for the packet transmitted from the multicast packet classification means and the packet filtering / network address translation means; And Switching means for transmitting each packet to the home network according to the priority of each packet through scheduling / queuing according to the priority recorded in the packet delivered by the priority tag regeneration means Home gateway device comprising a. The method of claim 1, The Internet Protocol TV (IPTV) channel changing means, Internet protocol TV (IPTV) channel conversion request to the upper router, and the multicast packet classification means for managing the Internet protocol TV (IPTV) stream to manage the Internet protocol TV (IPTV regeneration means for transmitting to the regeneration means) ( IPTV) stream forwarding management means; And Internet Protocol TV (IPTV) service priority management means for managing the priority of the Internet Protocol TV (IPTV) stream Home gateway device comprising a. The method according to any one of claims 1 to 3, The priority tag regeneration means, And reprioritizing the priority information tag of the packet to the designated priority level for the packet having the designated multicast address as the destination address, and giving a low priority to the normal packet. The method of claim 4, wherein The Internet Protocol TV (IPTV) service priority management means, Requesting the home network manager to allocate a resource for an Internet Protocol TV (IPTV) stream, and setting the priority tag regeneration means to reprioritize the priority. The method of claim 4, wherein The home network administrator, A home gateway device, comprising: allocating and managing necessary resources for traffic that each device wants to generate for devices connected to a home network. In the service prioritization method using a home gateway for Internet Protocol TV (IPTV) service, Confirming that the IPTV stream forwarding manager has received the channel subscription request message from the IPTV client, and providing priority information to the IPTV service priority manager; A resource checking step of confirming, by the IPTV service priority management unit, whether there is a resource sufficient to service the IPTV stream requested by the home network quality of service (QoS) management unit; A QoS allocating step of confirming that there is a resource in the resource checking step and allocating a quality of service (QoS) that satisfies the requested priority by the home network QoS management unit; A priority tag regeneration instruction for instructing the IPTV service priority manager to regenerate a priority tag for packets having a multicast address corresponding to an IPTV channel requested to be subscribed to as a destination address; A packet forwarding step of allowing the IPTV service priority manager to allow the IPTV stream forwarding manager to forward corresponding packets; The IPTV stream forwarding management unit registers the multicast address of the requested channel to the multicast packet classifier so that forwarding is performed when the corresponding packet arrives, and the channel join request message forwarding step of retransmitting the channel join request message to the upper router is performed. ; An IPTV stream packet transmission step of sending the requested IPTV stream packet to a home gateway by the upper router receiving the channel subscription request message transmitted in the channel subscription request message delivery step; An IPTV packet checking / transmitting step of confirming that the multicast packet classification unit has received the registered IPTV packet and delivering it to the priority tag regenerating unit; And A priority resetting / transmission step of the priority tag regeneration unit resetting the priority tag of the packet registered to regenerate the priority to the requested priority and then delivering the priority tag to the IPTV client of the home gateway. Reprioritization method of a service using a home gateway for the Internet Protocol TV service. The method of claim 7, wherein The IPTV stream packet transmission step, A method of reprioritizing service using a home gateway for an Internet Protocol TV service, characterized in that an IPTV stream packet does not have a priority tag set or contains a priority tag lower than a priority requested by a user. The method according to claim 7 or 8, The priority reset / transmit step, Re-prioritization of service priority using the home gateway for the Internet Protocol TV service, wherein the home gateway ensures the requested quality of service (QoS) by first processing the registered IPTV packet according to the priority-based queuing method. Way.

Images