Household gateway and method for ensuring household network service terminal QoS

Abstract

The present invention relates to digital communication technology, especially referring to a home gateway and ensuring home network service terminal QoS method. Said home gateway HGW includes service type recognizer used for identifying message service type; network address convert NAT used for according to service type converting message source address to relevant public network IP address; at least two connecting passages connected to network side equipment, said connecting passage capable of obtaining at least one public network IP address. The present invention can effectively prevent unauthorized PC accessing network user access network using service terminal uplink channel, to make PC user capable of freely selecting pay charges mode, at the same time saving IP resource, each terminal capable of realizing intercommunication, effectively ensuring speech-sounds, video data service obtaining good QoS ensuring.

Description

[technical field] [0001] The invention relates to digital communication technology, in particular to a home gateway and a method for guaranteeing the QoS of a home network service terminal. [Background technique] [0002] With the current development of communication technology, the digital family has begun to penetrate into real life. There are more and more network devices in the family, and there are more and more types of network-based services, such as personal computer (PC) Internet data services, digital telephone (IP Phone) ) provides VoIP service, BTV / VoD service provided by digital set-top box (IP STB), and video phone service provided by Video Phone. The home gateway (HGW) is at the core of the home network, and all services are carried on the IP network, and are sent to the SP (Service Provider, service provider) network through the same uplink channel through the HGW. These upstream channels are based on IP and may be one of various transmission technologies su...

AI Technical Summary

Problems solved by technology

[0004] 1. Under normal circumstances, the transmission bandwidth inside the home can reach 10M or even 100M, but at the uplink interface, the bandwidth often converges to only 2M or 4M, which is much smaller than the bandwidth inside the home

This leads to a problem: how to guarantee the QoS of various service terminals in the home? At the DSLAM, a large number of service flows converge and there is a bandwidth bottleneck. How to ensure the QoS here? If all data is encapsulated by the Ethernet-based point-to-point protocol PPPoE, because the DSLAM has not terminated PPPoE, it cannot recognize the data type in the PPPoE encapsulation, and naturally cannot perform QoS scheduling

[0005] 2. There are various terminals such as PC, IP Phone, and IPSTB in the home, and the terminals must realize direct intercommunication

[0006] 3. The number of terminals in the family is huge, and the address space that IPv4 can provide is limited, especially in my country, where IP address resources are seriously lacking

The disadvantages of this method are: ① The service requiring QoS guarantee and the uplink channel of the data online service needing QoS guarantee are combined together. On-demand program counting) must require the user to have opened the data access service and choose an unlimited payment method, which severely limits the target user group for service development

②All uplink data packets must be encapsulated in PPPoE packets. After aggregation at the DSLAM, since the DSLAM does not terminate PPPoE, it cannot identify the packet type in the PPPoE encapsulation, and naturally cannot provide effective QoS guarantee.

The disadvantages are: ① The devices in the home obtain IP addresses from different channels, and they are in different network segments. Some are even in public network addresses, and some are in private network addresses. Various devices cannot directly communicate with each other. If they want to communicate with each other, they must go to the SP It is very complicated to realize the intercommunication on the router

②Every device in the home is directly connected to the Internet and exposed to the public, making it difficult to guarantee security

③Each service terminal needs to be assigned a separate public network IP address, which seriously wastes IP resources

④When there are multiple data terminals (such as PCs) in the home, the device needs to provide NAT function. Although this NAT can be provided by the PC that implements PPPoE dial-up, it is inconvenient after all.

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