TWI430620B - The access network provides a multi-service hierarchical traffic split method - Google Patents

Description

Hierarchical traffic offloading method for accessing multiple networks

The present invention relates to a hierarchical traffic offloading method for accessing a network to provide multiple services, in particular, a layered responsibility for cooperating with a service feature of different application services, a traffic offload function of different network devices, and an IP routing function. The access network can correctly transmit multiple services and meet various factors such as environmental restrictions, service requirements, IP address planning, equipment resource constraints, and network construction costs.

In general, the traffic offloading plan for accessing network devices is generally only performed at a level of network equipment. For example, selecting the network device at the computer terminal to perform traffic offloading, so that the security of the device setting is The convenience is better. The change of user service only needs to change the setting of the network equipment at the equipment terminal. The application and change process of the user service is relatively simple, and the service time required for the service is also less, but due to the uplink. The traffic bottleneck occurs in the user loop port of the network device accessed by the user. Therefore, the disadvantage that the upstream traffic cannot distinguish the priority level may be caused, resulting in the loss of important traffic or control signals. In addition, the terminal for different services of the customer The IP address planning and VLAN ID consumption of the device is difficult to meet the needs of the telecom operators and achieve the purpose of reducing the network construction cost.

If the access network CPE device of the user terminal is selected to perform the traffic offloading function, the priority classification of the multi-service uplink service and the uplink traffic rate limit of the specific condition or service can be conveniently performed, but the relative user access network The number of virtual circuits between the CPE device and the equipment terminal to be connected to the network equipment will increase. The insertion of the 802.1Q VLAN tag requires the cooperation of the two devices, but according to the functional characteristics of the network device. It is highly probable that the consumption of VLAN resources in the upper layer of the network will be increased, thereby increasing the network construction cost. Moreover, in order to smoothly divert multiple services, the client needs to set a large number of traffic offload conditions for the CPE device to be accessed by the network, and the performance of the CPE device for the user to access the network is a great test.

Since accessing the network VLAN ID resources on the upper layer of the network is an important consideration, because some Layer 2 or Layer 3 switches can only provide limited VLAN virtual circuit capacity, the consumption of VLAN ID will affect the aggregation network. Planning of road services and the cost of network construction. Therefore, how to design an optimal multi-service provisioning mode to meet the environment and service requirements and meet the resource limitation of the upper-layer aggregation network equipment will be a big test for network planning and design.

It can be seen that there are still many shortcomings in the above-mentioned methods of use, which is not a good design, but needs to be improved.

In view of the shortcomings derived from the above-mentioned conventional methods, the inventor of the present invention has improved and innovated, and after painstaking research, he finally succeeded in researching and developing the level of traffic diversion method that provides multiple services for this access network.

The purpose of the present invention is to provide a hierarchical traffic offloading method for accessing a network to provide multiple services, which utilizes multiple levels of access network devices to share the shunting of uplink traffic to meet the environment and services. The comprehensive requirements of the demand, the IP address planning policy of the user service terminal equipment, the resource limitation of the network equipment and the network construction cost, and the multiple services can operate normally.

The hierarchical traffic offloading method for the multiple access services provided by the access network for achieving the above object is to utilize the traffic characteristics of different services, the traffic offload function of different network devices, and the IP routing function to hierarchically cooperate to achieve cooperation. Access to multiple services of the network can function normally, and meet the needs of the environment and services, the IP address planning of the user service terminal equipment, the resource limitation of the network equipment, and the network construction cost.

Referring to FIG. 1 , the network connection architecture diagram of the hierarchical traffic offloading method for providing multiple services for the access network of the present invention includes: Layer 3 network device 1, aggregation network 2, and computer terminal access. Network device 3 (including Multiple Service Access Multiplexer (MSAM) or Digital Subscriber Line Access Multiplexer (DSLAM)), Digital Subscriber Line (DSL) 4 The client accesses the network CPE device 5 and the user service terminal device 6. Among them, the digital subscriber loop technology can include the high-speed digital subscriber line (VDSL) VDSL/VDSL2 xDSL access network technology, and the telecommunications network provider accesses the network devices 3 and 5, and digital users. Circuit 4 provides customers with high-speed Internet access, multimedia video services, and Internet telephony services.

Referring to FIG. 2, the schematic diagram and operation flowchart of the hierarchical traffic offloading method for providing multiple services for the access network of the present invention are used to receive the network CPE device as the first traffic distribution point at the user end. The equipment room terminates the network equipment as the second traffic distribution point, and the Layer 3 network equipment on the aggregation network acts as the third traffic distribution point. After the multi-service service enters the CPE device from the service terminal device of the client, the client accesses the network CPE device to classify and process according to the characteristics of the user service packet and the traffic offload condition, and then through the DSL user. The loop is transmitted to the equipment room and connected to the network equipment. The equipment in the equipment room is classified and processed according to the packet characteristics and traffic shunt conditions, and the VLAN ID is attached, and then transmitted to the Layer 3 network device through the aggregation network. Finally, the Layer 3 network device transmits the packet to the correct path according to the traffic offload condition or the IP routing information. The traffic offloading decision mechanism of each level of network equipment will be related to the service provider's service provisioning mode.

Please refer to FIG. 3, which is an implementation example of a hierarchical traffic offloading method for providing multiple services for the access network of the present invention. In this example, it is assumed that multiple services include service A, service B, and service C, and user services of three services. Terminal devices have their own IP assignment methods depending on the planning and needs of the service. Considering the limitations of the network resources of the aggregation network devices, and the detection of user service obstacles, each user is assigned an individual VLAN ID to the service A, and the service B and the service C share an individual VLAN ID. In order to comprehensively consider various factors such as environmental restrictions, service requirements, IP address planning, equipment resource limitations, and network construction costs, the concept of a hierarchical traffic offloading method for multiple services provided by the present invention is used. Plan the Layer 3 network equipment, the network terminal to pick up the network equipment, and the client to access the network CPE equipment. The three layers are responsible for the cooperation, so that the End-to-End network can correctly transmit multiple services.

The access network provided by the present invention provides a multi-service hierarchical traffic offloading method, and has the following advantages when compared with other conventional technologies:

1. When the invention provides multiple services, the utility model can effectively save the consumption of the VLAN virtual circuit of the upper layer network device of the access network, and reduce the construction cost of the network.

2. The present invention has a distributed traffic offloading execution point to avoid the risk of insufficient device performance or insufficient stability due to excessive load on a single device.

3. The present invention provides an end-to-end service quality delivery mechanism and smoothly provides quality differentiated service provisioning requirements.

4. The present invention has the characteristics of comprehensively considering various conditions such as policies, environment, cost, demand and equipment characteristics of service providers and fixed network operators.

The detailed description of the present invention is intended to be illustrative of a preferred embodiment of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

To sum up, this case is not only innovative in terms of technical thinking, but also has many of the above-mentioned functions that are not in the traditional methods of the past. It has fully complied with the statutory invention patent requirements of novelty and progressiveness, and applied for it according to law. Approved this invention patent application, in order to invent invention, to the sense of virtue.

1. . . Layer 3 network device

2. . . Collection network

3. . . The terminal is connected to the network equipment

4. . . DSL subscriber loop

5. . . The client accesses the network CPE device.

6. . . User service terminal equipment

Please refer to the detailed description of the parameters of the present invention and the accompanying drawings, and the technical contents of the present invention and the effects thereof can be further understood; the related drawings are:

FIG. 1 is a network connection architecture diagram of a hierarchical traffic offloading method for accessing a network to provide multiple services according to the present invention;

FIG. 2 is a schematic structural diagram and an operational flowchart of a hierarchical traffic offloading method for providing multiple services in the access network;

FIG. 3 is an implementation example of a hierarchical traffic offloading method for providing multiple services to the access network.

1. . . Layer 3 network device

2. . . Collection network

3. . . The terminal is connected to the network equipment

4. . . DSL subscriber loop

5. . . The client accesses the network CPE device.

6. . . User service terminal equipment

Claims (5)

A hierarchical traffic offloading method for accessing a network to provide multiple services includes: a. accessing the network multi-service traffic diversion point planning and configuration, accessing the network CPE device as the first message at the user end The traffic distribution point is that the equipment room is connected to the network device as the second traffic distribution point, and the Layer 3 network device on the aggregation network is used as the third traffic distribution point; b. accessing the network multiple service message After the multi-service service enters the user terminal to access the network CPE device from the service terminal device of the client, the user accesses the network CPE device according to the characteristics of the user service packet and the traffic shunt condition. Processing, transmitting to the equipment room through the DSL subscriber loop to access the network equipment, the equipment terminal to pick up the network equipment according to the packet characteristics and traffic shunt conditions for classification and processing, and affix the VLAN ID, and then transmitted to the Layer through the aggregation network 3 network equipment, and finally Layer 3 network equipment transmits packets to the correct way according to traffic offload conditions or IP routing information. For example, the access network provided in the first application of the patent scope provides a multi-service hierarchical traffic offloading method, wherein the design method of the traffic shunt can simultaneously satisfy the conditions and restrictions: an IP address of a user service terminal device Assignment policy; a collection of equipment resources restrictions for network equipment; a service delivery method and an equal access policy; a device function of a user service terminal device; a device function of a network device to access network devices and traffic distribution characteristics; And a user-side access to the network CPE device device function and traffic offloading characteristics. For example, the access network provided in the first application of the patent scope provides a multi-service hierarchical traffic offloading method, and the applicable DSL access technologies include VDSL and VDSL2 xDSL technologies. For example, the access network provided in the first application of the patent scope provides a multi-service hierarchical traffic offloading method, and the user terminal accesses the function and role positioning of the network CPE device, and can also be distinguished as the user termination of the low-order function. Take network CPE equipment with home gateway devices that meet multiple service requirements and traffic offload capabilities. For example, the access network provided in the first application of the patent scope provides a multi-service hierarchical traffic offloading method, and the user terminal accesses the network CPE device function to be an access network integrating the Home Gateway function. The CPE device is a CPE device that simply provides access to the network function (the Home Gateway is a standalone device at this time).